diff --git a/.gitignore b/.gitignore
index 0743489f8ec..b6b4a1a559a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,6 +16,7 @@ NashornProfile.txt
 **/JTreport/**
 **/JTwork/**
 /src/utils/LogCompilation/target/
+/src/utils/LogCompilation/logc.jar
 /.project/
 /.settings/
 /compile_commands.json
diff --git a/make/PreInit.gmk b/make/PreInit.gmk
index 3df44308dd9..8152587781c 100644
--- a/make/PreInit.gmk
+++ b/make/PreInit.gmk
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2012, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2012, 2026, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -66,7 +66,8 @@ CALLED_SPEC_TARGETS := $(filter-out $(ALL_GLOBAL_TARGETS), $(CALLED_TARGETS))
 ifeq ($(CALLED_SPEC_TARGETS), )
   SKIP_SPEC := true
 endif
-ifeq ($(findstring p, $(MAKEFLAGS))$(findstring q, $(MAKEFLAGS)), pq)
+MFLAGS_SINGLE := $(filter-out --%, $(MFLAGS))
+ifeq ($(findstring p, $(MFLAGS_SINGLE))$(findstring q, $(MFLAGS_SINGLE)), pq)
   SKIP_SPEC := true
 endif
 
diff --git a/make/autoconf/lib-bundled.m4 b/make/autoconf/lib-bundled.m4
index bc358928af0..7aa5fdf2589 100644
--- a/make/autoconf/lib-bundled.m4
+++ b/make/autoconf/lib-bundled.m4
@@ -267,7 +267,7 @@ AC_DEFUN_ONCE([LIB_SETUP_ZLIB],
   LIBZ_LIBS=""
   if test "x$USE_EXTERNAL_LIBZ" = "xfalse"; then
     LIBZ_CFLAGS="$LIBZ_CFLAGS -I$TOPDIR/src/java.base/share/native/libzip/zlib"
-    if test "x$OPENJDK_TARGET_OS" = xmacosx; then
+    if test "x$OPENJDK_TARGET_OS" = xmacosx -o "x$OPENJDK_TARGET_OS" = xaix -o "x$OPENJDK_TARGET_OS" = xlinux; then
         LIBZ_CFLAGS="$LIBZ_CFLAGS -DHAVE_UNISTD_H=1 -DHAVE_STDARG_H=1"
     fi
   else
diff --git a/src/hotspot/cpu/aarch64/aarch64.ad b/src/hotspot/cpu/aarch64/aarch64.ad
index a9ca91d9309..9734c6845ea 100644
--- a/src/hotspot/cpu/aarch64/aarch64.ad
+++ b/src/hotspot/cpu/aarch64/aarch64.ad
@@ -3403,11 +3403,13 @@ encode %{
       } else if (rtype == relocInfo::metadata_type) {
         __ mov_metadata(dst_reg, (Metadata*)con);
       } else {
-        assert(rtype == relocInfo::none, "unexpected reloc type");
+        assert(rtype == relocInfo::none || rtype == relocInfo::external_word_type, "unexpected reloc type");
+        // load fake address constants using a normal move
         if (! __ is_valid_AArch64_address(con) ||
             con < (address)(uintptr_t)os::vm_page_size()) {
           __ mov(dst_reg, con);
         } else {
+          // no reloc so just use adrp and add
           uint64_t offset;
           __ adrp(dst_reg, con, offset);
           __ add(dst_reg, dst_reg, offset);
@@ -4535,6 +4537,18 @@ operand immP_1()
   interface(CONST_INTER);
 %}
 
+// AOT Runtime Constants Address
+operand immAOTRuntimeConstantsAddress()
+%{
+  // Check if the address is in the range of AOT Runtime Constants
+  predicate(AOTRuntimeConstants::contains((address)(n->get_ptr())));
+  match(ConP);
+
+  op_cost(0);
+  format %{ %}
+  interface(CONST_INTER);
+%}
+
 // Float and Double operands
 // Double Immediate
 operand immD()
@@ -6898,6 +6912,20 @@ instruct loadConP1(iRegPNoSp dst, immP_1 con)
   ins_pipe(ialu_imm);
 %}
 
+instruct loadAOTRCAddress(iRegPNoSp dst, immAOTRuntimeConstantsAddress con)
+%{
+  match(Set dst con);
+
+  ins_cost(INSN_COST);
+  format %{ "adr  $dst, $con\t# AOT Runtime Constants Address" %}
+
+  ins_encode %{
+    __ load_aotrc_address($dst$$Register, (address)$con$$constant);
+  %}
+
+  ins_pipe(ialu_imm);
+%}
+
 // Load Narrow Pointer Constant
 
 instruct loadConN(iRegNNoSp dst, immN con)
diff --git a/src/hotspot/cpu/aarch64/c1_LIRAssembler_aarch64.cpp b/src/hotspot/cpu/aarch64/c1_LIRAssembler_aarch64.cpp
index c0621cbd5c2..30048a2079d 100644
--- a/src/hotspot/cpu/aarch64/c1_LIRAssembler_aarch64.cpp
+++ b/src/hotspot/cpu/aarch64/c1_LIRAssembler_aarch64.cpp
@@ -33,6 +33,7 @@
 #include "c1/c1_ValueStack.hpp"
 #include "ci/ciArrayKlass.hpp"
 #include "ci/ciInstance.hpp"
+#include "code/aotCodeCache.hpp"
 #include "code/compiledIC.hpp"
 #include "gc/shared/collectedHeap.hpp"
 #include "gc/shared/gc_globals.hpp"
@@ -532,6 +533,15 @@ void LIR_Assembler::const2reg(LIR_Opr src, LIR_Opr dest, LIR_PatchCode patch_cod
 
     case T_LONG: {
       assert(patch_code == lir_patch_none, "no patching handled here");
+#if INCLUDE_CDS
+      if (AOTCodeCache::is_on_for_dump()) {
+        address b = c->as_pointer();
+        if (AOTRuntimeConstants::contains(b)) {
+          __ load_aotrc_address(dest->as_register_lo(), b);
+          break;
+        }
+      }
+#endif
       __ mov(dest->as_register_lo(), (intptr_t)c->as_jlong());
       break;
     }
diff --git a/src/hotspot/cpu/aarch64/gc/g1/g1BarrierSetAssembler_aarch64.cpp b/src/hotspot/cpu/aarch64/gc/g1/g1BarrierSetAssembler_aarch64.cpp
index d7884c27a2c..68291720208 100644
--- a/src/hotspot/cpu/aarch64/gc/g1/g1BarrierSetAssembler_aarch64.cpp
+++ b/src/hotspot/cpu/aarch64/gc/g1/g1BarrierSetAssembler_aarch64.cpp
@@ -23,6 +23,7 @@
  */
 
 #include "asm/macroAssembler.inline.hpp"
+#include "code/aotCodeCache.hpp"
 #include "gc/g1/g1BarrierSet.hpp"
 #include "gc/g1/g1BarrierSetAssembler.hpp"
 #include "gc/g1/g1BarrierSetRuntime.hpp"
@@ -243,9 +244,25 @@ static void generate_post_barrier(MacroAssembler* masm,
   assert_different_registers(store_addr, new_val, thread, tmp1, tmp2, noreg, rscratch1);
 
   // Does store cross heap regions?
-  __ eor(tmp1, store_addr, new_val);                     // tmp1 := store address ^ new value
-  __ lsr(tmp1, tmp1, G1HeapRegion::LogOfHRGrainBytes);   // tmp1 := ((store address ^ new value) >> LogOfHRGrainBytes)
-  __ cbz(tmp1, done);
+ #if INCLUDE_CDS
+  // AOT code needs to load the barrier grain shift from the aot
+  // runtime constants area in the code cache otherwise we can compile
+  // it as an immediate operand
+  if (AOTCodeCache::is_on_for_dump()) {
+    address grain_shift_address = (address)AOTRuntimeConstants::grain_shift_address();
+    __ eor(tmp1, store_addr, new_val);
+    __ lea(tmp2, ExternalAddress(grain_shift_address));
+    __ ldrb(tmp2, tmp2);
+    __ lsrv(tmp1, tmp1, tmp2);
+    __ cbz(tmp1, done);
+  } else
+#endif
+  {
+    __ eor(tmp1, store_addr, new_val);                     // tmp1 := store address ^ new value
+    __ lsr(tmp1, tmp1, G1HeapRegion::LogOfHRGrainBytes);   // tmp1 := ((store address ^ new value) >> LogOfHRGrainBytes)
+    __ cbz(tmp1, done);
+  }
+
   // Crosses regions, storing null?
   if (new_val_may_be_null) {
     __ cbz(new_val, done);
diff --git a/src/hotspot/cpu/aarch64/macroAssembler_aarch64.cpp b/src/hotspot/cpu/aarch64/macroAssembler_aarch64.cpp
index 35e90d296c9..3e3e95be07e 100644
--- a/src/hotspot/cpu/aarch64/macroAssembler_aarch64.cpp
+++ b/src/hotspot/cpu/aarch64/macroAssembler_aarch64.cpp
@@ -5754,6 +5754,14 @@ void MacroAssembler::adrp(Register reg1, const Address &dest, uint64_t &byte_off
 }
 
 void MacroAssembler::load_byte_map_base(Register reg) {
+#if INCLUDE_CDS
+  if (AOTCodeCache::is_on_for_dump()) {
+    address byte_map_base_adr = AOTRuntimeConstants::card_table_base_address();
+    lea(reg, ExternalAddress(byte_map_base_adr));
+    ldr(reg, Address(reg));
+    return;
+  }
+#endif
   CardTableBarrierSet* ctbs = CardTableBarrierSet::barrier_set();
 
   // Strictly speaking the card table base isn't an address at all, and it might
@@ -5761,6 +5769,20 @@ void MacroAssembler::load_byte_map_base(Register reg) {
   mov(reg, (uint64_t)ctbs->card_table_base_const());
 }
 
+void MacroAssembler::load_aotrc_address(Register reg, address a) {
+#if INCLUDE_CDS
+  assert(AOTRuntimeConstants::contains(a), "address out of range for data area");
+  if (AOTCodeCache::is_on_for_dump()) {
+    // all aotrc field addresses should be registered in the AOTCodeCache address table
+    lea(reg, ExternalAddress(a));
+  } else {
+    mov(reg, (uint64_t)a);
+  }
+#else
+  ShouldNotReachHere();
+#endif
+}
+
 void MacroAssembler::build_frame(int framesize) {
   assert(framesize >= 2 * wordSize, "framesize must include space for FP/LR");
   assert(framesize % (2*wordSize) == 0, "must preserve 2*wordSize alignment");
diff --git a/src/hotspot/cpu/aarch64/macroAssembler_aarch64.hpp b/src/hotspot/cpu/aarch64/macroAssembler_aarch64.hpp
index 7b5af532ca1..fa32f3055b9 100644
--- a/src/hotspot/cpu/aarch64/macroAssembler_aarch64.hpp
+++ b/src/hotspot/cpu/aarch64/macroAssembler_aarch64.hpp
@@ -1476,6 +1476,9 @@ public:
   // Load the base of the cardtable byte map into reg.
   void load_byte_map_base(Register reg);
 
+  // Load a constant address in the AOT Runtime Constants area
+  void load_aotrc_address(Register reg, address a);
+
   // Prolog generator routines to support switch between x86 code and
   // generated ARM code
 
diff --git a/src/hotspot/cpu/x86/c1_LIRAssembler_x86.cpp b/src/hotspot/cpu/x86/c1_LIRAssembler_x86.cpp
index 37ee9451405..d9be0fdcc8d 100644
--- a/src/hotspot/cpu/x86/c1_LIRAssembler_x86.cpp
+++ b/src/hotspot/cpu/x86/c1_LIRAssembler_x86.cpp
@@ -32,6 +32,7 @@
 #include "c1/c1_ValueStack.hpp"
 #include "ci/ciArrayKlass.hpp"
 #include "ci/ciInstance.hpp"
+#include "code/aotCodeCache.hpp"
 #include "compiler/oopMap.hpp"
 #include "gc/shared/collectedHeap.hpp"
 #include "gc/shared/gc_globals.hpp"
@@ -535,6 +536,15 @@ void LIR_Assembler::const2reg(LIR_Opr src, LIR_Opr dest, LIR_PatchCode patch_cod
 
     case T_LONG: {
       assert(patch_code == lir_patch_none, "no patching handled here");
+#if INCLUDE_CDS
+      if (AOTCodeCache::is_on_for_dump()) {
+        address b = c->as_pointer();
+        if (AOTRuntimeConstants::contains(b)) {
+          __ load_aotrc_address(dest->as_register_lo(), b);
+          break;
+        }
+      }
+#endif
       __ movptr(dest->as_register_lo(), (intptr_t)c->as_jlong());
       break;
     }
diff --git a/src/hotspot/cpu/x86/gc/g1/g1BarrierSetAssembler_x86.cpp b/src/hotspot/cpu/x86/gc/g1/g1BarrierSetAssembler_x86.cpp
index 34de9403ccf..b20d7b5cd07 100644
--- a/src/hotspot/cpu/x86/gc/g1/g1BarrierSetAssembler_x86.cpp
+++ b/src/hotspot/cpu/x86/gc/g1/g1BarrierSetAssembler_x86.cpp
@@ -23,6 +23,7 @@
  */
 
 #include "asm/macroAssembler.inline.hpp"
+#include "code/aotCodeCache.hpp"
 #include "gc/g1/g1BarrierSet.hpp"
 #include "gc/g1/g1BarrierSetAssembler.hpp"
 #include "gc/g1/g1BarrierSetRuntime.hpp"
@@ -268,6 +269,16 @@ void G1BarrierSetAssembler::g1_write_barrier_pre(MacroAssembler* masm,
   __ bind(done);
 }
 
+#if INCLUDE_CDS
+// return a register that differs from reg1, reg2, reg3 and reg4
+
+static Register pick_different_reg(Register reg1, Register reg2 = noreg, Register reg3= noreg, Register reg4 = noreg) {
+  RegSet available = (RegSet::of(rscratch1, rscratch2, rax, rbx) + rdx -
+                      RegSet::of(reg1, reg2, reg3, reg4));
+  return *(available.begin());
+}
+#endif // INCLUDE_CDS
+
 static void generate_post_barrier(MacroAssembler* masm,
                                   const Register store_addr,
                                   const Register new_val,
@@ -280,10 +291,32 @@ static void generate_post_barrier(MacroAssembler* masm,
 
   Label L_done;
   // Does store cross heap regions?
-  __ movptr(tmp1, store_addr);                                    // tmp1 := store address
-  __ xorptr(tmp1, new_val);                                       // tmp1 := store address ^ new value
-  __ shrptr(tmp1, G1HeapRegion::LogOfHRGrainBytes);               // ((store address ^ new value) >> LogOfHRGrainBytes) == 0?
-  __ jccb(Assembler::equal, L_done);
+#if INCLUDE_CDS
+  // AOT code needs to load the barrier grain shift from the aot
+  // runtime constants area in the code cache otherwise we can compile
+  // it as an immediate operand
+
+  if (AOTCodeCache::is_on_for_dump()) {
+    address grain_shift_addr = AOTRuntimeConstants::grain_shift_address();
+    Register save = pick_different_reg(rcx, tmp1, new_val, store_addr);
+    __ push(save);
+    __ movptr(save, store_addr);
+    __ xorptr(save, new_val);
+    __ push(rcx);
+    __ lea(rcx, ExternalAddress(grain_shift_addr));
+    __ movl(rcx, Address(rcx, 0));
+    __ shrptr(save);
+    __ pop(rcx);
+    __ pop(save);
+    __ jcc(Assembler::equal, L_done);
+  } else
+#endif // INCLUDE_CDS
+  {
+    __ movptr(tmp1, store_addr);                                    // tmp1 := store address
+    __ xorptr(tmp1, new_val);                                       // tmp1 := store address ^ new value
+    __ shrptr(tmp1, G1HeapRegion::LogOfHRGrainBytes);               // ((store address ^ new value) >> LogOfHRGrainBytes) == 0?
+    __ jccb(Assembler::equal, L_done);
+  }
 
   // Crosses regions, storing null?
   if (new_val_may_be_null) {
diff --git a/src/hotspot/cpu/x86/gc/shared/cardTableBarrierSetAssembler_x86.cpp b/src/hotspot/cpu/x86/gc/shared/cardTableBarrierSetAssembler_x86.cpp
index 65e6b4e01fc..0ea769dd488 100644
--- a/src/hotspot/cpu/x86/gc/shared/cardTableBarrierSetAssembler_x86.cpp
+++ b/src/hotspot/cpu/x86/gc/shared/cardTableBarrierSetAssembler_x86.cpp
@@ -23,6 +23,7 @@
  */
 
 #include "asm/macroAssembler.inline.hpp"
+#include "code/aotCodeCache.hpp"
 #include "gc/shared/barrierSet.hpp"
 #include "gc/shared/cardTable.hpp"
 #include "gc/shared/cardTableBarrierSet.hpp"
@@ -111,7 +112,15 @@ void CardTableBarrierSetAssembler::gen_write_ref_array_post_barrier(MacroAssembl
   __ shrptr(end, CardTable::card_shift());
   __ subptr(end, addr); // end --> cards count
 
-  __ mov64(tmp, (intptr_t)ctbs->card_table_base_const());
+#if INCLUDE_CDS
+  if (AOTCodeCache::is_on_for_dump()) {
+    __ lea(tmp, ExternalAddress(AOTRuntimeConstants::card_table_base_address()));
+    __ movq(tmp, Address(tmp, 0));
+  } else
+#endif
+  {
+    __ mov64(tmp, (intptr_t)ctbs->card_table_base_const());
+  }
   __ addptr(addr, tmp);
 __ BIND(L_loop);
   __ movb(Address(addr, count, Address::times_1), 0);
@@ -121,7 +130,7 @@ __ BIND(L_loop);
 __ BIND(L_done);
 }
 
-void CardTableBarrierSetAssembler::store_check(MacroAssembler* masm, Register obj, Address dst) {
+void CardTableBarrierSetAssembler::store_check(MacroAssembler* masm, Register obj, Address dst, Register rscratch) {
   // Does a store check for the oop in register obj. The content of
   // register obj is destroyed afterwards.
   CardTableBarrierSet* ctbs = CardTableBarrierSet::barrier_set();
@@ -136,6 +145,13 @@ void CardTableBarrierSetAssembler::store_check(MacroAssembler* masm, Register ob
   // never need to be relocated. On 64bit however the value may be too
   // large for a 32bit displacement.
   intptr_t byte_map_base = (intptr_t)ctbs->card_table_base_const();
+#if INCLUDE_CDS
+  if (AOTCodeCache::is_on_for_dump()) {
+    __ lea(rscratch, ExternalAddress(AOTRuntimeConstants::card_table_base_address()));
+    __ movq(rscratch, Address(rscratch, 0));
+    card_addr = Address(rscratch, obj, Address::times_1, 0);
+  } else
+#endif
   if (__ is_simm32(byte_map_base)) {
     card_addr = Address(noreg, obj, Address::times_1, byte_map_base);
   } else {
@@ -174,10 +190,10 @@ void CardTableBarrierSetAssembler::oop_store_at(MacroAssembler* masm, DecoratorS
   if (needs_post_barrier) {
     // flatten object address if needed
     if (!precise || (dst.index() == noreg && dst.disp() == 0)) {
-      store_check(masm, dst.base(), dst);
+      store_check(masm, dst.base(), dst, tmp2);
     } else {
       __ lea(tmp1, dst);
-      store_check(masm, tmp1, dst);
+      store_check(masm, tmp1, dst, tmp2);
     }
   }
 }
diff --git a/src/hotspot/cpu/x86/gc/shared/cardTableBarrierSetAssembler_x86.hpp b/src/hotspot/cpu/x86/gc/shared/cardTableBarrierSetAssembler_x86.hpp
index 0a36571c757..201c11062f2 100644
--- a/src/hotspot/cpu/x86/gc/shared/cardTableBarrierSetAssembler_x86.hpp
+++ b/src/hotspot/cpu/x86/gc/shared/cardTableBarrierSetAssembler_x86.hpp
@@ -33,7 +33,7 @@ protected:
   virtual void gen_write_ref_array_pre_barrier(MacroAssembler* masm, DecoratorSet decorators,
                                                Register addr, Register count) {}
 
-  void store_check(MacroAssembler* masm, Register obj, Address dst);
+  void store_check(MacroAssembler* masm, Register obj, Address dst, Register rscratch);
 
   virtual void gen_write_ref_array_post_barrier(MacroAssembler* masm, DecoratorSet decorators, Register addr, Register count, Register tmp);
 
diff --git a/src/hotspot/cpu/x86/macroAssembler_x86.cpp b/src/hotspot/cpu/x86/macroAssembler_x86.cpp
index 83169df3456..b54f6adc263 100644
--- a/src/hotspot/cpu/x86/macroAssembler_x86.cpp
+++ b/src/hotspot/cpu/x86/macroAssembler_x86.cpp
@@ -10034,6 +10034,20 @@ void MacroAssembler::restore_legacy_gprs() {
   addq(rsp, 16 * wordSize);
 }
 
+void MacroAssembler::load_aotrc_address(Register reg, address a) {
+#if INCLUDE_CDS
+  assert(AOTRuntimeConstants::contains(a), "address out of range for data area");
+  if (AOTCodeCache::is_on_for_dump()) {
+    // all aotrc field addresses should be registered in the AOTCodeCache address table
+    lea(reg, ExternalAddress(a));
+  } else {
+    mov64(reg, (uint64_t)a);
+  }
+#else
+  ShouldNotReachHere();
+#endif
+}
+
 void MacroAssembler::setcc(Assembler::Condition comparison, Register dst) {
   if (VM_Version::supports_apx_f()) {
     esetzucc(comparison, dst);
diff --git a/src/hotspot/cpu/x86/macroAssembler_x86.hpp b/src/hotspot/cpu/x86/macroAssembler_x86.hpp
index eb23199ca63..5c049f710e2 100644
--- a/src/hotspot/cpu/x86/macroAssembler_x86.hpp
+++ b/src/hotspot/cpu/x86/macroAssembler_x86.hpp
@@ -2070,6 +2070,7 @@ public:
 
   void save_legacy_gprs();
   void restore_legacy_gprs();
+  void load_aotrc_address(Register reg, address a);
   void setcc(Assembler::Condition comparison, Register dst);
 };
 
diff --git a/src/hotspot/cpu/x86/x86.ad b/src/hotspot/cpu/x86/x86.ad
index aed54fe93d4..0ffa4c2031c 100644
--- a/src/hotspot/cpu/x86/x86.ad
+++ b/src/hotspot/cpu/x86/x86.ad
@@ -5187,6 +5187,18 @@ operand immL_65535()
   interface(CONST_INTER);
 %}
 
+// AOT Runtime Constants Address
+operand immAOTRuntimeConstantsAddress()
+%{
+  // Check if the address is in the range of AOT Runtime Constants
+  predicate(AOTRuntimeConstants::contains((address)(n->get_ptr())));
+  match(ConP);
+
+  op_cost(0);
+  format %{ %}
+  interface(CONST_INTER);
+%}
+
 operand kReg()
 %{
   constraint(ALLOC_IN_RC(vectmask_reg));
@@ -7332,6 +7344,19 @@ instruct loadD(regD dst, memory mem)
   ins_pipe(pipe_slow); // XXX
 %}
 
+instruct loadAOTRCAddress(rRegP dst, immAOTRuntimeConstantsAddress con)
+%{
+  match(Set dst con);
+
+  format %{ "leaq  $dst, $con\t# AOT Runtime Constants Address" %}
+
+  ins_encode %{
+    __ load_aotrc_address($dst$$Register, (address)$con$$constant);
+  %}
+
+  ins_pipe(ialu_reg_fat);
+%}
+
 // max = java.lang.Math.max(float a, float b)
 instruct maxF_reg_avx10_2(regF dst, regF a, regF b) %{
   predicate(VM_Version::supports_avx10_2());
diff --git a/src/hotspot/os_cpu/windows_aarch64/vm_version_windows_aarch64.cpp b/src/hotspot/os_cpu/windows_aarch64/vm_version_windows_aarch64.cpp
index a20feadcba4..93beb549366 100644
--- a/src/hotspot/os_cpu/windows_aarch64/vm_version_windows_aarch64.cpp
+++ b/src/hotspot/os_cpu/windows_aarch64/vm_version_windows_aarch64.cpp
@@ -27,22 +27,30 @@
 #include "runtime/vm_version.hpp"
 
 int VM_Version::get_current_sve_vector_length() {
-  assert(_features & CPU_SVE, "should not call this");
+  assert(VM_Version::supports_sve(), "should not call this");
   ShouldNotReachHere();
   return 0;
 }
 
 int VM_Version::set_and_get_current_sve_vector_length(int length) {
-  assert(_features & CPU_SVE, "should not call this");
+  assert(VM_Version::supports_sve(), "should not call this");
   ShouldNotReachHere();
   return 0;
 }
 
 void VM_Version::get_os_cpu_info() {
 
-  if (IsProcessorFeaturePresent(PF_ARM_V8_CRC32_INSTRUCTIONS_AVAILABLE))   _features |= CPU_CRC32;
-  if (IsProcessorFeaturePresent(PF_ARM_V8_CRYPTO_INSTRUCTIONS_AVAILABLE))  _features |= CPU_AES | CPU_SHA1 | CPU_SHA2;
-  if (IsProcessorFeaturePresent(PF_ARM_VFP_32_REGISTERS_AVAILABLE))        _features |= CPU_ASIMD;
+  if (IsProcessorFeaturePresent(PF_ARM_V8_CRC32_INSTRUCTIONS_AVAILABLE)) {
+    set_feature(CPU_CRC32);
+  }
+  if (IsProcessorFeaturePresent(PF_ARM_V8_CRYPTO_INSTRUCTIONS_AVAILABLE)) {
+    set_feature(CPU_AES);
+    set_feature(CPU_SHA1);
+    set_feature(CPU_SHA2);
+  }
+  if (IsProcessorFeaturePresent(PF_ARM_VFP_32_REGISTERS_AVAILABLE)) {
+    set_feature(CPU_ASIMD);
+  }
   // No check for CPU_PMULL, CPU_SVE, CPU_SVE2
 
   __int64 dczid_el0 = _ReadStatusReg(0x5807 /* ARM64_DCZID_EL0 */);
diff --git a/src/hotspot/share/adlc/main.cpp b/src/hotspot/share/adlc/main.cpp
index 4e8a96617e8..8e6ea5bbec9 100644
--- a/src/hotspot/share/adlc/main.cpp
+++ b/src/hotspot/share/adlc/main.cpp
@@ -213,6 +213,7 @@ int main(int argc, char *argv[])
   AD.addInclude(AD._CPP_file, "adfiles", get_basename(AD._VM_file._name));
   AD.addInclude(AD._CPP_file, "adfiles", get_basename(AD._HPP_file._name));
   AD.addInclude(AD._CPP_file, "memory/allocation.inline.hpp");
+  AD.addInclude(AD._CPP_file, "code/aotCodeCache.hpp");
   AD.addInclude(AD._CPP_file, "code/codeCache.hpp");
   AD.addInclude(AD._CPP_file, "code/compiledIC.hpp");
   AD.addInclude(AD._CPP_file, "code/nativeInst.hpp");
@@ -257,6 +258,7 @@ int main(int argc, char *argv[])
   AD.addInclude(AD._CPP_PEEPHOLE_file, "adfiles", get_basename(AD._HPP_file._name));
   AD.addInclude(AD._CPP_PIPELINE_file, "adfiles", get_basename(AD._HPP_file._name));
   AD.addInclude(AD._DFA_file, "adfiles", get_basename(AD._HPP_file._name));
+  AD.addInclude(AD._DFA_file, "code/aotCodeCache.hpp");
   AD.addInclude(AD._DFA_file, "oops/compressedOops.hpp");
   AD.addInclude(AD._DFA_file, "opto/cfgnode.hpp");  // Use PROB_MAX in predicate.
   AD.addInclude(AD._DFA_file, "opto/intrinsicnode.hpp");
diff --git a/src/hotspot/share/classfile/vmIntrinsics.hpp b/src/hotspot/share/classfile/vmIntrinsics.hpp
index 29cb5d737d8..67817682ced 100644
--- a/src/hotspot/share/classfile/vmIntrinsics.hpp
+++ b/src/hotspot/share/classfile/vmIntrinsics.hpp
@@ -1029,7 +1029,7 @@ class methodHandle;
   do_intrinsic(_VectorUnaryLibOp, jdk_internal_vm_vector_VectorSupport, vector_unary_lib_op_name, vector_unary_lib_op_sig, F_S)                \
    do_signature(vector_unary_lib_op_sig,"(J"                                                                                                   \
                                          "Ljava/lang/Class;"                                                                                   \
-                                         "Ljava/lang/Class;"                                                                                   \
+                                         "I"                                                                                                   \
                                          "I"                                                                                                   \
                                          "Ljava/lang/String;"                                                                                  \
                                          "Ljdk/internal/vm/vector/VectorSupport$Vector;"                                                       \
@@ -1040,7 +1040,7 @@ class methodHandle;
   do_intrinsic(_VectorBinaryLibOp, jdk_internal_vm_vector_VectorSupport, vector_binary_lib_op_name, vector_binary_lib_op_sig, F_S)             \
    do_signature(vector_binary_lib_op_sig,"(J"                                                                                                  \
                                           "Ljava/lang/Class;"                                                                                  \
-                                          "Ljava/lang/Class;"                                                                                  \
+                                          "I"                                                                                                  \
                                           "I"                                                                                                  \
                                           "Ljava/lang/String;"                                                                                 \
                                           "Ljdk/internal/vm/vector/VectorSupport$VectorPayload;"                                               \
diff --git a/src/hotspot/share/code/aotCodeCache.cpp b/src/hotspot/share/code/aotCodeCache.cpp
index 32a53691f3f..e5f68afc51d 100644
--- a/src/hotspot/share/code/aotCodeCache.cpp
+++ b/src/hotspot/share/code/aotCodeCache.cpp
@@ -29,9 +29,11 @@
 #include "cds/cds_globals.hpp"
 #include "cds/cdsConfig.hpp"
 #include "cds/heapShared.hpp"
+#include "ci/ciUtilities.hpp"
 #include "classfile/javaAssertions.hpp"
 #include "code/aotCodeCache.hpp"
 #include "code/codeCache.hpp"
+#include "gc/shared/cardTableBarrierSet.hpp"
 #include "gc/shared/gcConfig.hpp"
 #include "logging/logStream.hpp"
 #include "memory/memoryReserver.hpp"
@@ -53,6 +55,7 @@
 #endif
 #if INCLUDE_G1GC
 #include "gc/g1/g1BarrierSetRuntime.hpp"
+#include "gc/g1/g1HeapRegion.hpp"
 #endif
 #if INCLUDE_SHENANDOAHGC
 #include "gc/shenandoah/shenandoahRuntime.hpp"
@@ -258,6 +261,9 @@ void AOTCodeCache::init2() {
     return;
   }
 
+  // initialize aot runtime constants as appropriate to this runtime
+  AOTRuntimeConstants::initialize_from_runtime();
+
   // initialize the table of external routines so we can save
   // generated code blobs that reference them
   AOTCodeAddressTable* table = opened_cache->_table;
@@ -1447,6 +1453,12 @@ void AOTCodeAddressTable::init_extrs() {
 #endif
 #endif // ZERO
 
+  // addresses of fields in AOT runtime constants area
+  address* p = AOTRuntimeConstants::field_addresses_list();
+  while (*p != nullptr) {
+    SET_ADDRESS(_extrs, *p++);
+  }
+
   _extrs_complete = true;
   log_debug(aot, codecache, init)("External addresses recorded");
 }
@@ -1729,6 +1741,11 @@ int AOTCodeAddressTable::id_for_address(address addr, RelocIterator reloc, CodeB
   if (addr == (address)-1) { // Static call stub has jump to itself
     return id;
   }
+  // Check card_table_base address first since it can point to any address
+  BarrierSet* bs = BarrierSet::barrier_set();
+  bool is_const_card_table_base = !UseG1GC && !UseShenandoahGC && bs->is_a(BarrierSet::CardTableBarrierSet);
+  guarantee(!is_const_card_table_base || addr != ci_card_table_address_const(), "sanity");
+
   // Seach for C string
   id = id_for_C_string(addr);
   if (id >= 0) {
@@ -1798,6 +1815,44 @@ int AOTCodeAddressTable::id_for_address(address addr, RelocIterator reloc, CodeB
   return id;
 }
 
+AOTRuntimeConstants AOTRuntimeConstants::_aot_runtime_constants;
+
+void AOTRuntimeConstants::initialize_from_runtime() {
+  BarrierSet* bs = BarrierSet::barrier_set();
+  address card_table_base = nullptr;
+  uint grain_shift = 0;
+#if INCLUDE_G1GC
+  if (bs->is_a(BarrierSet::G1BarrierSet)) {
+    grain_shift = G1HeapRegion::LogOfHRGrainBytes;
+  } else
+#endif
+#if INCLUDE_SHENANDOAHGC
+  if (bs->is_a(BarrierSet::ShenandoahBarrierSet)) {
+    grain_shift = 0;
+  } else
+#endif
+  if (bs->is_a(BarrierSet::CardTableBarrierSet)) {
+    CardTable::CardValue* base = ci_card_table_address_const();
+    assert(base != nullptr, "unexpected byte_map_base");
+    card_table_base = base;
+    CardTableBarrierSet* ctbs = barrier_set_cast<CardTableBarrierSet>(bs);
+    grain_shift = ctbs->grain_shift();
+  }
+  _aot_runtime_constants._card_table_base = card_table_base;
+  _aot_runtime_constants._grain_shift = grain_shift;
+}
+
+address AOTRuntimeConstants::_field_addresses_list[] = {
+  ((address)&_aot_runtime_constants._card_table_base),
+  ((address)&_aot_runtime_constants._grain_shift),
+  nullptr
+};
+
+address AOTRuntimeConstants::card_table_base_address() {
+  assert(UseSerialGC || UseParallelGC, "Only these GCs have constant card table base");
+  return (address)&_aot_runtime_constants._card_table_base;
+}
+
 // This is called after initialize() but before init2()
 // and _cache is not set yet.
 void AOTCodeCache::print_on(outputStream* st) {
diff --git a/src/hotspot/share/code/aotCodeCache.hpp b/src/hotspot/share/code/aotCodeCache.hpp
index 45b4a15510d..85f8b47920f 100644
--- a/src/hotspot/share/code/aotCodeCache.hpp
+++ b/src/hotspot/share/code/aotCodeCache.hpp
@@ -25,6 +25,7 @@
 #ifndef SHARE_CODE_AOTCODECACHE_HPP
 #define SHARE_CODE_AOTCODECACHE_HPP
 
+#include "gc/shared/gc_globals.hpp"
 #include "runtime/stubInfo.hpp"
 
 /*
@@ -422,4 +423,36 @@ public:
 #endif // PRODUCT
 };
 
+// code cache internal runtime constants area used by AOT code
+class AOTRuntimeConstants {
+ friend class AOTCodeCache;
+ private:
+  address _card_table_base;
+  uint    _grain_shift;
+  static address _field_addresses_list[];
+  static AOTRuntimeConstants _aot_runtime_constants;
+  // private constructor for unique singleton
+  AOTRuntimeConstants() { }
+  // private for use by friend class AOTCodeCache
+  static void initialize_from_runtime();
+ public:
+#if INCLUDE_CDS
+  static bool contains(address adr) {
+    address base = (address)&_aot_runtime_constants;
+    address hi = base + sizeof(AOTRuntimeConstants);
+    return (base <= adr && adr < hi);
+  }
+  static address card_table_base_address();
+  static address grain_shift_address() { return (address)&_aot_runtime_constants._grain_shift; }
+  static address* field_addresses_list() {
+    return _field_addresses_list;
+  }
+#else
+  static bool contains(address adr)        { return false; }
+  static address card_table_base_address() { return nullptr; }
+  static address grain_shift_address()     { return nullptr; }
+  static address* field_addresses_list()   { return nullptr; }
+#endif
+};
+
 #endif // SHARE_CODE_AOTCODECACHE_HPP
diff --git a/src/hotspot/share/gc/g1/g1BarrierSet.hpp b/src/hotspot/share/gc/g1/g1BarrierSet.hpp
index 406096acf10..c5c7058471c 100644
--- a/src/hotspot/share/gc/g1/g1BarrierSet.hpp
+++ b/src/hotspot/share/gc/g1/g1BarrierSet.hpp
@@ -25,6 +25,7 @@
 #ifndef SHARE_GC_G1_G1BARRIERSET_HPP
 #define SHARE_GC_G1_G1BARRIERSET_HPP
 
+#include "gc/g1/g1HeapRegion.hpp"
 #include "gc/g1/g1SATBMarkQueueSet.hpp"
 #include "gc/shared/bufferNode.hpp"
 #include "gc/shared/cardTable.hpp"
@@ -116,6 +117,8 @@ class G1BarrierSet: public CardTableBarrierSet {
 
   virtual void print_on(outputStream* st) const;
 
+  virtual uint grain_shift() { return G1HeapRegion::LogOfHRGrainBytes; }
+
   // Callbacks for runtime accesses.
   template <DecoratorSet decorators, typename BarrierSetT = G1BarrierSet>
   class AccessBarrier: public CardTableBarrierSet::AccessBarrier<decorators, BarrierSetT> {
diff --git a/src/hotspot/share/gc/shared/c1/cardTableBarrierSetC1.cpp b/src/hotspot/share/gc/shared/c1/cardTableBarrierSetC1.cpp
index 914358760aa..86b74aa5736 100644
--- a/src/hotspot/share/gc/shared/c1/cardTableBarrierSetC1.cpp
+++ b/src/hotspot/share/gc/shared/c1/cardTableBarrierSetC1.cpp
@@ -22,6 +22,7 @@
  *
  */
 
+#include "code/aotCodeCache.hpp"
 #include "gc/shared/c1/cardTableBarrierSetC1.hpp"
 #include "gc/shared/cardTable.hpp"
 #include "gc/shared/cardTableBarrierSet.hpp"
@@ -123,6 +124,7 @@ void CardTableBarrierSetC1::post_barrier(LIRAccess& access, LIR_Opr addr, LIR_Op
   assert(addr->is_register(), "must be a register at this point");
 
 #ifdef CARDTABLEBARRIERSET_POST_BARRIER_HELPER
+  assert(!AOTCodeCache::is_on(), "this path is not implemented");
   gen->CardTableBarrierSet_post_barrier_helper(addr, card_table_base);
 #else
   LIR_Opr tmp = gen->new_pointer_register();
@@ -135,6 +137,17 @@ void CardTableBarrierSetC1::post_barrier(LIRAccess& access, LIR_Opr addr, LIR_Op
   }
 
   LIR_Address* card_addr;
+#if INCLUDE_CDS
+  if (AOTCodeCache::is_on_for_dump()) {
+    // load the card table address from the AOT Runtime Constants area
+    LIR_Opr byte_map_base_adr = LIR_OprFact::intptrConst(AOTRuntimeConstants::card_table_base_address());
+    LIR_Opr byte_map_base_reg = gen->new_pointer_register();
+    __ move(byte_map_base_adr, byte_map_base_reg);
+    LIR_Address* byte_map_base_indirect = new LIR_Address(byte_map_base_reg, 0, T_LONG);
+    __ move(byte_map_base_indirect, byte_map_base_reg);
+    card_addr = new LIR_Address(tmp, byte_map_base_reg, T_BYTE);
+  } else
+#endif
   if (gen->can_inline_as_constant(card_table_base)) {
     card_addr = new LIR_Address(tmp, card_table_base->as_jint(), T_BYTE);
   } else {
diff --git a/src/hotspot/share/gc/shared/c2/cardTableBarrierSetC2.cpp b/src/hotspot/share/gc/shared/c2/cardTableBarrierSetC2.cpp
index 42af77ebdf4..f7445ff254f 100644
--- a/src/hotspot/share/gc/shared/c2/cardTableBarrierSetC2.cpp
+++ b/src/hotspot/share/gc/shared/c2/cardTableBarrierSetC2.cpp
@@ -23,6 +23,7 @@
  */
 
 #include "ci/ciUtilities.hpp"
+#include "code/aotCodeCache.hpp"
 #include "gc/shared/c2/cardTableBarrierSetC2.hpp"
 #include "gc/shared/cardTable.hpp"
 #include "gc/shared/cardTableBarrierSet.hpp"
@@ -114,13 +115,20 @@ Node* CardTableBarrierSetC2::atomic_xchg_at_resolved(C2AtomicParseAccess& access
   return result;
 }
 
-Node* CardTableBarrierSetC2::byte_map_base_node(GraphKit* kit) const {
+Node* CardTableBarrierSetC2::byte_map_base_node(IdealKit* kit) const {
   // Get base of card map
+#if INCLUDE_CDS
+  if (AOTCodeCache::is_on_for_dump()) {
+    // load the card table address from the AOT Runtime Constants area
+    Node* byte_map_base_adr = kit->makecon(TypeRawPtr::make(AOTRuntimeConstants::card_table_base_address()));
+    return kit->load_aot_const(byte_map_base_adr, TypeRawPtr::NOTNULL);
+  }
+#endif
   CardTable::CardValue* card_table_base = ci_card_table_address_const();
    if (card_table_base != nullptr) {
      return kit->makecon(TypeRawPtr::make((address)card_table_base));
    } else {
-     return kit->null();
+     return kit->makecon(Type::get_zero_type(T_ADDRESS));
    }
 }
 
@@ -168,7 +176,7 @@ void CardTableBarrierSetC2::post_barrier(GraphKit* kit,
   Node* card_offset = __ URShiftX(cast, __ ConI(CardTable::card_shift()));
 
   // Combine card table base and card offset
-  Node* card_adr = __ AddP(__ top(), byte_map_base_node(kit), card_offset);
+  Node* card_adr = __ AddP(__ top(), byte_map_base_node(&ideal), card_offset);
 
   // Get the alias_index for raw card-mark memory
   int adr_type = Compile::AliasIdxRaw;
diff --git a/src/hotspot/share/gc/shared/c2/cardTableBarrierSetC2.hpp b/src/hotspot/share/gc/shared/c2/cardTableBarrierSetC2.hpp
index 84876808f0d..8f5bae8c6dd 100644
--- a/src/hotspot/share/gc/shared/c2/cardTableBarrierSetC2.hpp
+++ b/src/hotspot/share/gc/shared/c2/cardTableBarrierSetC2.hpp
@@ -43,7 +43,7 @@ protected:
                                                 Node* new_val, const Type* value_type) const;
   virtual Node* atomic_xchg_at_resolved(C2AtomicParseAccess& access, Node* new_val, const Type* value_type) const;
 
-  Node* byte_map_base_node(GraphKit* kit) const;
+  Node* byte_map_base_node(IdealKit* kit) const;
 
 public:
   virtual void eliminate_gc_barrier(PhaseMacroExpand* macro, Node* node) const;
diff --git a/src/hotspot/share/gc/shared/cardTableBarrierSet.hpp b/src/hotspot/share/gc/shared/cardTableBarrierSet.hpp
index 3a9b46d9df8..5d355318b21 100644
--- a/src/hotspot/share/gc/shared/cardTableBarrierSet.hpp
+++ b/src/hotspot/share/gc/shared/cardTableBarrierSet.hpp
@@ -103,6 +103,10 @@ public:
 
   virtual void print_on(outputStream* st) const;
 
+  // The AOT code cache manager needs to know the region grain size
+  // shift for some barrier sets.
+  virtual uint grain_shift() { return 0; }
+
   template <DecoratorSet decorators, typename BarrierSetT = CardTableBarrierSet>
   class AccessBarrier: public BarrierSet::AccessBarrier<decorators, BarrierSetT> {
     typedef BarrierSet::AccessBarrier<decorators, BarrierSetT> Raw;
diff --git a/src/hotspot/share/gc/shared/space.cpp b/src/hotspot/share/gc/shared/space.cpp
index 84ba21527fd..093fa4432e2 100644
--- a/src/hotspot/share/gc/shared/space.cpp
+++ b/src/hotspot/share/gc/shared/space.cpp
@@ -51,7 +51,7 @@ void ContiguousSpace::initialize(MemRegion mr,
   set_bottom(bottom);
   set_end(end);
   if (clear_space) {
-    clear(SpaceDecorator::DontMangle);
+    set_top(bottom);
   }
   if (ZapUnusedHeapArea) {
     mangle_unused_area();
diff --git a/src/hotspot/share/gc/shenandoah/shenandoahBarrierSetNMethod.cpp b/src/hotspot/share/gc/shenandoah/shenandoahBarrierSetNMethod.cpp
index c6e6108fda8..2be5722f7f9 100644
--- a/src/hotspot/share/gc/shenandoah/shenandoahBarrierSetNMethod.cpp
+++ b/src/hotspot/share/gc/shenandoah/shenandoahBarrierSetNMethod.cpp
@@ -41,9 +41,9 @@ bool ShenandoahBarrierSetNMethod::nmethod_entry_barrier(nmethod* nm) {
     return true;
   }
 
-  ShenandoahReentrantLock* lock = ShenandoahNMethod::lock_for_nmethod(nm);
+  ShenandoahNMethodLock* lock = ShenandoahNMethod::lock_for_nmethod(nm);
   assert(lock != nullptr, "Must be");
-  ShenandoahReentrantLocker locker(lock);
+  ShenandoahNMethodLocker locker(lock);
 
   if (!is_armed(nm)) {
     // Some other thread managed to complete while we were
diff --git a/src/hotspot/share/gc/shenandoah/shenandoahCodeRoots.cpp b/src/hotspot/share/gc/shenandoah/shenandoahCodeRoots.cpp
index 07d339eb32e..64e135e9a4e 100644
--- a/src/hotspot/share/gc/shenandoah/shenandoahCodeRoots.cpp
+++ b/src/hotspot/share/gc/shenandoah/shenandoahCodeRoots.cpp
@@ -136,13 +136,13 @@ public:
     assert(!nm_data->is_unregistered(), "Should not see unregistered entry");
 
     if (nm->is_unloading()) {
-      ShenandoahReentrantLocker locker(nm_data->lock());
+      ShenandoahNMethodLocker locker(nm_data->lock());
       nm->unlink();
       return;
     }
 
     {
-      ShenandoahReentrantLocker locker(nm_data->lock());
+      ShenandoahNMethodLocker locker(nm_data->lock());
 
       // Heal oops
       if (_bs->is_armed(nm)) {
@@ -154,7 +154,7 @@ public:
     }
 
     // Clear compiled ICs and exception caches
-    ShenandoahReentrantLocker locker(nm_data->ic_lock());
+    ShenandoahNMethodLocker locker(nm_data->ic_lock());
     nm->unload_nmethod_caches(_unloading_occurred);
   }
 };
diff --git a/src/hotspot/share/gc/shenandoah/shenandoahConcurrentGC.cpp b/src/hotspot/share/gc/shenandoah/shenandoahConcurrentGC.cpp
index 364279deafe..5206a0558e8 100644
--- a/src/hotspot/share/gc/shenandoah/shenandoahConcurrentGC.cpp
+++ b/src/hotspot/share/gc/shenandoah/shenandoahConcurrentGC.cpp
@@ -1023,7 +1023,7 @@ public:
 
   void do_nmethod(nmethod* n) {
     ShenandoahNMethod* data = ShenandoahNMethod::gc_data(n);
-    ShenandoahReentrantLocker locker(data->lock());
+    ShenandoahNMethodLocker locker(data->lock());
     // Setup EvacOOM scope below reentrant lock to avoid deadlock with
     // nmethod_entry_barrier
     ShenandoahEvacOOMScope oom;
diff --git a/src/hotspot/share/gc/shenandoah/shenandoahFreeSet.hpp b/src/hotspot/share/gc/shenandoah/shenandoahFreeSet.hpp
index 91c6024d522..d55a06d5713 100644
--- a/src/hotspot/share/gc/shenandoah/shenandoahFreeSet.hpp
+++ b/src/hotspot/share/gc/shenandoah/shenandoahFreeSet.hpp
@@ -32,8 +32,8 @@
 #include "gc/shenandoah/shenandoahSimpleBitMap.hpp"
 #include "logging/logStream.hpp"
 
-typedef ShenandoahLock    ShenandoahRebuildLock;
-typedef ShenandoahLocker  ShenandoahRebuildLocker;
+typedef ShenandoahLock                           ShenandoahRebuildLock;
+typedef ShenandoahLocker<ShenandoahRebuildLock>  ShenandoahRebuildLocker;
 
 // Each ShenandoahHeapRegion is associated with a ShenandoahFreeSetPartitionId.
 enum class ShenandoahFreeSetPartitionId : uint8_t {
diff --git a/src/hotspot/share/gc/shenandoah/shenandoahGenerationalHeap.cpp b/src/hotspot/share/gc/shenandoah/shenandoahGenerationalHeap.cpp
index 98d30a3481f..2c2e5533c01 100644
--- a/src/hotspot/share/gc/shenandoah/shenandoahGenerationalHeap.cpp
+++ b/src/hotspot/share/gc/shenandoah/shenandoahGenerationalHeap.cpp
@@ -605,7 +605,8 @@ void ShenandoahGenerationalHeap::compute_old_generation_balance(size_t mutator_x
   ShenandoahOldGeneration* old_gen = old_generation();
   size_t old_capacity = old_gen->max_capacity();
   size_t old_usage = old_gen->used(); // includes humongous waste
-  size_t old_available = ((old_capacity >= old_usage)? old_capacity - old_usage: 0) + old_trashed_regions * region_size_bytes;
+  size_t old_currently_available =
+    ((old_capacity >= old_usage)? old_capacity - old_usage: 0) + old_trashed_regions * region_size_bytes;
 
   ShenandoahYoungGeneration* young_gen = young_generation();
   size_t young_capacity = young_gen->max_capacity();
@@ -621,7 +622,8 @@ void ShenandoahGenerationalHeap::compute_old_generation_balance(size_t mutator_x
   size_t young_reserve = (young_generation()->max_capacity() * ShenandoahEvacReserve) / 100;
 
   // If ShenandoahOldEvacPercent equals 100, max_old_reserve is limited only by mutator_xfer_limit and young_reserve
-  const size_t bound_on_old_reserve = ((old_available + mutator_xfer_limit + young_reserve) * ShenandoahOldEvacPercent) / 100;
+  const size_t bound_on_old_reserve =
+    ((old_currently_available + mutator_xfer_limit + young_reserve) * ShenandoahOldEvacPercent) / 100;
   size_t proposed_max_old = ((ShenandoahOldEvacPercent == 100)?
                              bound_on_old_reserve:
                              MIN2((young_reserve * ShenandoahOldEvacPercent) / (100 - ShenandoahOldEvacPercent),
@@ -631,68 +633,105 @@ void ShenandoahGenerationalHeap::compute_old_generation_balance(size_t mutator_x
   }
 
   // Decide how much old space we should reserve for a mixed collection
-  size_t reserve_for_mixed = 0;
+  size_t proposed_reserve_for_mixed = 0;
   const size_t old_fragmented_available =
-    old_available - (old_generation()->free_unaffiliated_regions() + old_trashed_regions) * region_size_bytes;
+    old_currently_available - (old_generation()->free_unaffiliated_regions() + old_trashed_regions) * region_size_bytes;
 
   if (old_fragmented_available > proposed_max_old) {
-    // After we've promoted regions in place, there may be an abundance of old-fragmented available memory,
-    // even more than the desired percentage for old reserve.  We cannot transfer these fragmented regions back
-    // to young.  Instead we make the best of the situation by using this fragmented memory for both promotions
-    // and evacuations.
+    // In this case, the old_fragmented_available is greater than the desired amount of evacuation to old.
+    // We'll use all of this memory to hold results of old evacuation, and we'll give back to the young generation
+    // any old regions that are not fragmented.
+    //
+    // This scenario may happen after we have promoted many regions in place, and each of these regions had non-zero
+    // unused memory, so there is now an abundance of old-fragmented available memory, even more than the desired
+    // percentage for old reserve.  We cannot transfer these fragmented regions back to young.  Instead we make the
+    // best of the situation by using this fragmented memory for both promotions and evacuations.
+
     proposed_max_old = old_fragmented_available;
   }
-  size_t reserve_for_promo = old_fragmented_available;
+  // Otherwise: old_fragmented_available <= proposed_max_old. Do not shrink proposed_max_old from the original computation.
+
+  // Though we initially set proposed_reserve_for_promo to equal the entirety of old fragmented available, we have the
+  // opportunity below to shift some of this memory into the proposed_reserve_for_mixed.
+  size_t proposed_reserve_for_promo = old_fragmented_available;
   const size_t max_old_reserve = proposed_max_old;
+
   const size_t mixed_candidate_live_memory = old_generation()->unprocessed_collection_candidates_live_memory();
   const bool doing_mixed = (mixed_candidate_live_memory > 0);
   if (doing_mixed) {
-    // We want this much memory to be unfragmented in order to reliably evacuate old.  This is conservative because we
-    // may not evacuate the entirety of unprocessed candidates in a single mixed evacuation.
+    // In the ideal, all of the memory reserved for mixed evacuation would be unfragmented, but we don't enforce
+    // this.  Note that the initial value of  max_evac_need is conservative because we may not evacuate all of the
+    // remaining mixed evacuation candidates in a single cycle.
     const size_t max_evac_need = (size_t) (mixed_candidate_live_memory * ShenandoahOldEvacWaste);
-    assert(old_available >= old_generation()->free_unaffiliated_regions() * region_size_bytes,
+    assert(old_currently_available >= old_generation()->free_unaffiliated_regions() * region_size_bytes,
            "Unaffiliated available must be less than total available");
 
     // We prefer to evacuate all of mixed into unfragmented memory, and will expand old in order to do so, unless
     // we already have too much fragmented available memory in old.
-    reserve_for_mixed = max_evac_need;
-    if (reserve_for_mixed + reserve_for_promo > max_old_reserve) {
-      // In this case, we'll allow old-evac to target some of the fragmented old memory.
-      size_t excess_reserves = (reserve_for_mixed + reserve_for_promo) - max_old_reserve;
-      if (reserve_for_promo > excess_reserves) {
-        reserve_for_promo -= excess_reserves;
+    proposed_reserve_for_mixed = max_evac_need;
+    if (proposed_reserve_for_mixed + proposed_reserve_for_promo > max_old_reserve) {
+      // We're trying to reserve more memory than is available.  So we need to shrink our reserves.
+      size_t excess_reserves = (proposed_reserve_for_mixed + proposed_reserve_for_promo) - max_old_reserve;
+      // We need to shrink reserves by excess_reserves.  We prefer to shrink by reducing promotion, giving priority to mixed
+      // evacuation.  If the promotion reserve is larger than the amount we need to shrink by, do all the shrinkage there.
+      if (proposed_reserve_for_promo > excess_reserves) {
+        proposed_reserve_for_promo -= excess_reserves;
       } else {
-        excess_reserves -= reserve_for_promo;
-        reserve_for_promo = 0;
-        reserve_for_mixed -= excess_reserves;
+        // Otherwise, we'll shrink promotion reserve to zero and we'll shrink the mixed-evac reserve by the remaining excess.
+        excess_reserves -= proposed_reserve_for_promo;
+        proposed_reserve_for_promo = 0;
+        proposed_reserve_for_mixed -= excess_reserves;
       }
     }
   }
+  assert(proposed_reserve_for_mixed + proposed_reserve_for_promo <= max_old_reserve,
+         "Reserve for mixed (%zu) plus reserve for promotions (%zu) must be less than maximum old reserve (%zu)",
+         proposed_reserve_for_mixed, proposed_reserve_for_promo, max_old_reserve);
 
   // Decide how much additional space we should reserve for promotions from young.  We give priority to mixed evacations
   // over promotions.
   const size_t promo_load = old_generation()->get_promotion_potential();
   const bool doing_promotions = promo_load > 0;
-  if (doing_promotions) {
-    // We've already set aside all of the fragmented available memory within old-gen to represent old objects
-    // to be promoted from young generation.  promo_load represents the memory that we anticipate to be promoted
-    // from regions that have reached tenure age.  In the ideal, we will always use fragmented old-gen memory
-    // to hold individually promoted objects and will use unfragmented old-gen memory to represent the old-gen
-    // evacuation workloa.
 
-    // We're promoting and have an estimate of memory to be promoted from aged regions
-    assert(max_old_reserve >= (reserve_for_mixed + reserve_for_promo), "Sanity");
-    const size_t available_for_additional_promotions = max_old_reserve - (reserve_for_mixed + reserve_for_promo);
-    size_t promo_need = (size_t)(promo_load * ShenandoahPromoEvacWaste);
-    if (promo_need > reserve_for_promo) {
-      reserve_for_promo += MIN2(promo_need - reserve_for_promo, available_for_additional_promotions);
+  // promo_load represents the combined total of live memory within regions that have reached tenure age.  The true
+  // promotion potential is larger than this, because individual objects within regions that have not yet reached tenure
+  // age may be promotable. On the other hand, some of the objects that we intend to promote in the next GC cycle may
+  // die before they are next marked.  In the future, the promo_load will include the total size of tenurable objects
+  // residing in regions that have not yet reached tenure age.
+
+  if (doing_promotions) {
+    // We are always doing promotions, even when old_generation->get_promotion_potential() returns 0.  As currently implemented,
+    // get_promotion_potential() only knows the total live memory contained within young-generation regions whose age is
+    // tenurable. It does not know whether that memory will still be live at the end of the next mark cycle, and it doesn't
+    // know how much memory is contained within objects whose individual ages are tenurable, which reside in regions with
+    // non-tenurable age.  We use this, as adjusted by ShenandoahPromoEvacWaste, as an approximation of the total amount of
+    // memory to be promoted.  In the near future, we expect to implement a change that will allow get_promotion_potential()
+    // to account also for the total memory contained within individual objects that are tenure-ready even when they do
+    // not reside in aged regions.  This will represent a conservative over approximation of promotable memory because
+    // some of these objects may die before the next GC cycle executes.
+
+    // Be careful not to ask for too much promotion reserves. We have observed jtreg test failures under which a greedy
+    // promotion reserve causes a humongous allocation which is awaiting a full GC to fail (specifically
+    // gc/TestAllocHumongousFragment.java). This happens if too much of the memory reclaimed by the full GC
+    // is immediately reserved so that it cannot be allocated by the waiting mutator. It's not clear that this
+    // particular test is representative of the needs of typical GenShen users.  It is really a test of high frequency
+    // Full GCs under heap fragmentation stress.
+
+    size_t promo_need = (size_t) (promo_load * ShenandoahPromoEvacWaste);
+    if (promo_need > proposed_reserve_for_promo) {
+      const size_t available_for_additional_promotions =
+        max_old_reserve - (proposed_reserve_for_mixed + proposed_reserve_for_promo);
+      if (proposed_reserve_for_promo + available_for_additional_promotions >= promo_need) {
+        proposed_reserve_for_promo = promo_need;
+      } else {
+        proposed_reserve_for_promo += available_for_additional_promotions;
+      }
     }
-    // We've already reserved all the memory required for the promo_load, and possibly more.  The excess
-    // can be consumed by objects promoted from regions that have not yet reached tenure age.
   }
+  // else, leave proposed_reserve_for_promo as is.  By default, it is initialized to represent old_fragmented_available.
 
   // This is the total old we want to reserve (initialized to the ideal reserve)
-  size_t old_reserve = reserve_for_mixed + reserve_for_promo;
+  size_t proposed_old_reserve = proposed_reserve_for_mixed + proposed_reserve_for_promo;
 
   // We now check if the old generation is running a surplus or a deficit.
   size_t old_region_deficit = 0;
@@ -702,68 +741,70 @@ void ShenandoahGenerationalHeap::compute_old_generation_balance(size_t mutator_x
   // align the mutator_xfer_limit on region size
   mutator_xfer_limit = mutator_region_xfer_limit * region_size_bytes;
 
-  if (old_available >= old_reserve) {
+  if (old_currently_available >= proposed_old_reserve) {
     // We are running a surplus, so the old region surplus can go to young
-    const size_t old_surplus = old_available - old_reserve;
+    const size_t old_surplus = old_currently_available - proposed_old_reserve;
     old_region_surplus = old_surplus / region_size_bytes;
     const size_t unaffiliated_old_regions = old_generation()->free_unaffiliated_regions() + old_trashed_regions;
     old_region_surplus = MIN2(old_region_surplus, unaffiliated_old_regions);
     old_generation()->set_region_balance(checked_cast<ssize_t>(old_region_surplus));
-  } else if (old_available + mutator_xfer_limit >= old_reserve) {
-    // Mutator's xfer limit is sufficient to satisfy our need: transfer all memory from there
-    size_t old_deficit = old_reserve - old_available;
+    old_currently_available -= old_region_surplus * region_size_bytes;
+    young_available += old_region_surplus * region_size_bytes;
+  } else if (old_currently_available + mutator_xfer_limit >= proposed_old_reserve) {
+    // We know that old_currently_available < proposed_old_reserve because above test failed. Expand old_currently_available.
+    // Mutator's xfer limit is sufficient to satisfy our need: transfer all memory from there.
+    size_t old_deficit = proposed_old_reserve - old_currently_available;
     old_region_deficit = (old_deficit + region_size_bytes - 1) / region_size_bytes;
     old_generation()->set_region_balance(0 - checked_cast<ssize_t>(old_region_deficit));
+    old_currently_available += old_region_deficit * region_size_bytes;
+    young_available -= old_region_deficit * region_size_bytes;
   } else {
-   // We'll try to xfer from both mutator excess and from young collector reserve
-    size_t available_reserves = old_available + young_reserve + mutator_xfer_limit;
-    size_t old_entitlement = (available_reserves  * ShenandoahOldEvacPercent) / 100;
+    // We know that (old_currently_available < proposed_old_reserve) and
+    //   (old_currently_available + mutator_xfer_limit < proposed_old_reserve) because above tests failed.
+    // We need to shrink proposed_old_reserves.
 
-    // Round old_entitlement down to nearest multiple of regions to be transferred to old
-    size_t entitled_xfer = old_entitlement - old_available;
-    entitled_xfer = region_size_bytes * (entitled_xfer / region_size_bytes);
-    size_t unaffiliated_young_regions = young_generation()->free_unaffiliated_regions();
-    size_t unaffiliated_young_memory = unaffiliated_young_regions * region_size_bytes;
-    if (entitled_xfer > unaffiliated_young_memory) {
-      entitled_xfer = unaffiliated_young_memory;
-    }
-    old_entitlement = old_available + entitled_xfer;
-    if (old_entitlement < old_reserve) {
-      // There's not enough memory to satisfy our desire.  Scale back our old-gen intentions.
-      size_t budget_overrun = old_reserve - old_entitlement;;
-      if (reserve_for_promo > budget_overrun) {
-        reserve_for_promo -= budget_overrun;
-        old_reserve -= budget_overrun;
-      } else {
-        budget_overrun -= reserve_for_promo;
-        reserve_for_promo = 0;
-        reserve_for_mixed = (reserve_for_mixed > budget_overrun)? reserve_for_mixed - budget_overrun: 0;
-        old_reserve = reserve_for_promo + reserve_for_mixed;
-      }
-    }
+    // We could potentially shrink young_reserves in order to further expand proposed_old_reserves.  Let's not bother.  The
+    // important thing is that we keep a total amount of memory in reserve in preparation for the next GC cycle.  At
+    // the time we choose the next collection set, we'll have an opportunity to shift some of these young reserves
+    // into old reserves if that makes sense.
 
-    // Because of adjustments above, old_reserve may be smaller now than it was when we tested the branch
-    //   condition above: "(old_available + mutator_xfer_limit >= old_reserve)
-    // Therefore, we do NOT know that: mutator_xfer_limit < old_reserve - old_available
-
-    size_t old_deficit = old_reserve - old_available;
-    old_region_deficit = (old_deficit + region_size_bytes - 1) / region_size_bytes;
-
-    // Shrink young_reserve to account for loan to old reserve
-    const size_t reserve_xfer_regions = old_region_deficit - mutator_region_xfer_limit;
-    young_reserve -= reserve_xfer_regions * region_size_bytes;
+    // Start by taking all of mutator_xfer_limit into old_currently_available.
+    size_t old_region_deficit = mutator_region_xfer_limit;
     old_generation()->set_region_balance(0 - checked_cast<ssize_t>(old_region_deficit));
+    old_currently_available += old_region_deficit * region_size_bytes;
+    young_available -= old_region_deficit * region_size_bytes;
+
+    assert(old_currently_available < proposed_old_reserve,
+           "Old currently available (%zu) must be less than old reserve (%zu)", old_currently_available, proposed_old_reserve);
+
+    // There's not enough memory to satisfy our desire.  Scale back our old-gen intentions.  We prefer to satisfy
+    // the budget_overrun entirely from the promotion reserve, if that is large enough.  Otherwise, we'll satisfy
+    // the overrun from a combination of promotion and mixed-evacuation reserves.
+    size_t budget_overrun = proposed_old_reserve - old_currently_available;
+    if (proposed_reserve_for_promo > budget_overrun) {
+      proposed_reserve_for_promo -= budget_overrun;
+      // Dead code:
+      //  proposed_old_reserve -= budget_overrun;
+    } else {
+      budget_overrun -= proposed_reserve_for_promo;
+      proposed_reserve_for_promo = 0;
+      proposed_reserve_for_mixed = (proposed_reserve_for_mixed > budget_overrun)? proposed_reserve_for_mixed - budget_overrun: 0;
+      // Dead code:
+      //  Note: proposed_reserve_for_promo is 0 and proposed_reserve_for_mixed may equal 0.
+      //  proposed_old_reserve = proposed_reserve_for_mixed;
+    }
   }
 
-  assert(old_region_deficit == 0 || old_region_surplus == 0, "Only surplus or deficit, never both");
-  assert(young_reserve + reserve_for_mixed + reserve_for_promo <= old_available + young_available,
+  assert(old_region_deficit == 0 || old_region_surplus == 0,
+         "Only surplus (%zu) or deficit (%zu), never both", old_region_surplus, old_region_deficit);
+  assert(young_reserve + proposed_reserve_for_mixed + proposed_reserve_for_promo <= old_currently_available + young_available,
          "Cannot reserve more memory than is available: %zu + %zu + %zu <= %zu + %zu",
-         young_reserve, reserve_for_mixed, reserve_for_promo, old_available, young_available);
+         young_reserve, proposed_reserve_for_mixed, proposed_reserve_for_promo, old_currently_available, young_available);
 
   // deficit/surplus adjustments to generation sizes will precede rebuild
   young_generation()->set_evacuation_reserve(young_reserve);
-  old_generation()->set_evacuation_reserve(reserve_for_mixed);
-  old_generation()->set_promoted_reserve(reserve_for_promo);
+  old_generation()->set_evacuation_reserve(proposed_reserve_for_mixed);
+  old_generation()->set_promoted_reserve(proposed_reserve_for_promo);
 }
 
 void ShenandoahGenerationalHeap::coalesce_and_fill_old_regions(bool concurrent) {
diff --git a/src/hotspot/share/gc/shenandoah/shenandoahHeap.cpp b/src/hotspot/share/gc/shenandoah/shenandoahHeap.cpp
index 9dd837b90d2..d78bdae6a51 100644
--- a/src/hotspot/share/gc/shenandoah/shenandoahHeap.cpp
+++ b/src/hotspot/share/gc/shenandoah/shenandoahHeap.cpp
@@ -2834,3 +2834,13 @@ void ShenandoahHeap::log_heap_status(const char* msg) const {
     global_generation()->log_status(msg);
   }
 }
+
+ShenandoahHeapLocker::ShenandoahHeapLocker(ShenandoahHeapLock* lock, bool allow_block_for_safepoint) : _lock(lock) {
+#ifdef ASSERT
+  ShenandoahFreeSet* free_set = ShenandoahHeap::heap()->free_set();
+  // free_set is nullptr only at pre-initialized state
+  assert(free_set == nullptr || !free_set->rebuild_lock()->owned_by_self(), "Dead lock, can't acquire heap lock while holding free-set rebuild lock");
+  assert(_lock != nullptr, "Must not");
+#endif
+  _lock->lock(allow_block_for_safepoint);
+}
diff --git a/src/hotspot/share/gc/shenandoah/shenandoahHeap.hpp b/src/hotspot/share/gc/shenandoah/shenandoahHeap.hpp
index 4a4499667ff..85ad339469d 100644
--- a/src/hotspot/share/gc/shenandoah/shenandoahHeap.hpp
+++ b/src/hotspot/share/gc/shenandoah/shenandoahHeap.hpp
@@ -117,9 +117,23 @@ public:
   virtual bool is_thread_safe() { return false; }
 };
 
-typedef ShenandoahLock    ShenandoahHeapLock;
-typedef ShenandoahLocker  ShenandoahHeapLocker;
-typedef Stack<oop, mtGC>  ShenandoahScanObjectStack;
+typedef ShenandoahLock                       ShenandoahHeapLock;
+// ShenandoahHeapLocker implements locker to assure mutually exclusive access to the global heap data structures.
+// Asserts in the implementation detect potential deadlock usage with regards the rebuild lock that is present
+// in ShenandoahFreeSet.  Whenever both locks are acquired, this lock should be acquired before the
+// ShenandoahFreeSet rebuild lock.
+class ShenandoahHeapLocker : public StackObj {
+private:
+  ShenandoahHeapLock* _lock;
+public:
+  ShenandoahHeapLocker(ShenandoahHeapLock* lock, bool allow_block_for_safepoint = false);
+
+  ~ShenandoahHeapLocker() {
+    _lock->unlock();
+  }
+};
+
+typedef Stack<oop, mtGC>                     ShenandoahScanObjectStack;
 
 // Shenandoah GC is low-pause concurrent GC that uses a load reference barrier
 // for concurent evacuation and a snapshot-at-the-beginning write barrier for
diff --git a/src/hotspot/share/gc/shenandoah/shenandoahLock.cpp b/src/hotspot/share/gc/shenandoah/shenandoahLock.cpp
index 7eec0b9af64..7e317f53424 100644
--- a/src/hotspot/share/gc/shenandoah/shenandoahLock.cpp
+++ b/src/hotspot/share/gc/shenandoah/shenandoahLock.cpp
@@ -93,7 +93,7 @@ ShenandoahSimpleLock::ShenandoahSimpleLock() {
   assert(os::mutex_init_done(), "Too early!");
 }
 
-void ShenandoahSimpleLock::lock() {
+void ShenandoahSimpleLock::lock(bool allow_block_for_safepoint) {
   _lock.lock();
 }
 
@@ -101,28 +101,31 @@ void ShenandoahSimpleLock::unlock() {
   _lock.unlock();
 }
 
-ShenandoahReentrantLock::ShenandoahReentrantLock() :
-  ShenandoahSimpleLock(), _owner(nullptr), _count(0) {
-  assert(os::mutex_init_done(), "Too early!");
+template<typename Lock>
+ShenandoahReentrantLock<Lock>::ShenandoahReentrantLock() :
+  Lock(), _owner(nullptr), _count(0) {
 }
 
-ShenandoahReentrantLock::~ShenandoahReentrantLock() {
+template<typename Lock>
+ShenandoahReentrantLock<Lock>::~ShenandoahReentrantLock() {
   assert(_count == 0, "Unbalance");
 }
 
-void ShenandoahReentrantLock::lock() {
+template<typename Lock>
+void ShenandoahReentrantLock<Lock>::lock(bool allow_block_for_safepoint) {
   Thread* const thread = Thread::current();
   Thread* const owner = _owner.load_relaxed();
 
   if (owner != thread) {
-    ShenandoahSimpleLock::lock();
+    Lock::lock(allow_block_for_safepoint);
     _owner.store_relaxed(thread);
   }
 
   _count++;
 }
 
-void ShenandoahReentrantLock::unlock() {
+template<typename Lock>
+void ShenandoahReentrantLock<Lock>::unlock() {
   assert(owned_by_self(), "Invalid owner");
   assert(_count > 0, "Invalid count");
 
@@ -130,12 +133,17 @@ void ShenandoahReentrantLock::unlock() {
 
   if (_count == 0) {
     _owner.store_relaxed((Thread*)nullptr);
-    ShenandoahSimpleLock::unlock();
+    Lock::unlock();
   }
 }
 
-bool ShenandoahReentrantLock::owned_by_self() const {
+template<typename Lock>
+bool ShenandoahReentrantLock<Lock>::owned_by_self() const {
   Thread* const thread = Thread::current();
   Thread* const owner = _owner.load_relaxed();
   return owner == thread;
 }
+
+// Explicit template instantiation
+template class ShenandoahReentrantLock<ShenandoahSimpleLock>;
+template class ShenandoahReentrantLock<ShenandoahLock>;
diff --git a/src/hotspot/share/gc/shenandoah/shenandoahLock.hpp b/src/hotspot/share/gc/shenandoah/shenandoahLock.hpp
index 2e44810cd5d..7c91df191e5 100644
--- a/src/hotspot/share/gc/shenandoah/shenandoahLock.hpp
+++ b/src/hotspot/share/gc/shenandoah/shenandoahLock.hpp
@@ -31,7 +31,7 @@
 #include "runtime/javaThread.hpp"
 #include "runtime/safepoint.hpp"
 
-class ShenandoahLock  {
+class ShenandoahLock {
 private:
   enum LockState { unlocked = 0, locked = 1 };
 
@@ -48,7 +48,7 @@ private:
 public:
   ShenandoahLock() : _state(unlocked), _owner(nullptr) {};
 
-  void lock(bool allow_block_for_safepoint) {
+  void lock(bool allow_block_for_safepoint = false) {
     assert(_owner.load_relaxed() != Thread::current(), "reentrant locking attempt, would deadlock");
 
     if ((allow_block_for_safepoint && SafepointSynchronize::is_synchronizing()) ||
@@ -83,34 +83,19 @@ public:
   }
 };
 
-class ShenandoahLocker : public StackObj {
-private:
-  ShenandoahLock* const _lock;
-public:
-  ShenandoahLocker(ShenandoahLock* lock, bool allow_block_for_safepoint = false) : _lock(lock) {
-    if (_lock != nullptr) {
-      _lock->lock(allow_block_for_safepoint);
-    }
-  }
-
-  ~ShenandoahLocker() {
-    if (_lock != nullptr) {
-      _lock->unlock();
-    }
-  }
-};
-
+// Simple lock using PlatformMonitor
 class ShenandoahSimpleLock {
 private:
   PlatformMonitor   _lock; // native lock
 public:
   ShenandoahSimpleLock();
-
-  virtual void lock();
-  virtual void unlock();
+  void lock(bool allow_block_for_safepoint = false);
+  void unlock();
 };
 
-class ShenandoahReentrantLock : public ShenandoahSimpleLock {
+// templated reentrant lock
+template<typename Lock>
+class ShenandoahReentrantLock : public Lock {
 private:
   Atomic<Thread*>       _owner;
   uint64_t              _count;
@@ -119,30 +104,25 @@ public:
   ShenandoahReentrantLock();
   ~ShenandoahReentrantLock();
 
-  virtual void lock();
-  virtual void unlock();
+  void lock(bool allow_block_for_safepoint = false);
+  void unlock();
 
   // If the lock already owned by this thread
   bool owned_by_self() const ;
 };
 
-class ShenandoahReentrantLocker : public StackObj {
-private:
-  ShenandoahReentrantLock* const _lock;
-
+// template based ShenandoahLocker
+template<typename Lock>
+class ShenandoahLocker : public StackObj {
+  Lock* const _lock;
 public:
-  ShenandoahReentrantLocker(ShenandoahReentrantLock* lock) :
-    _lock(lock) {
-    if (_lock != nullptr) {
-      _lock->lock();
-    }
+  ShenandoahLocker(Lock* lock, bool allow_block_for_safepoint = false) : _lock(lock) {
+    assert(_lock != nullptr, "Must not");
+    _lock->lock(allow_block_for_safepoint);
   }
 
-  ~ShenandoahReentrantLocker() {
-    if (_lock != nullptr) {
-      assert(_lock->owned_by_self(), "Must be owner");
-      _lock->unlock();
-    }
+  ~ShenandoahLocker() {
+    _lock->unlock();
   }
 };
 
diff --git a/src/hotspot/share/gc/shenandoah/shenandoahNMethod.cpp b/src/hotspot/share/gc/shenandoah/shenandoahNMethod.cpp
index facaefd4b62..594ad614d90 100644
--- a/src/hotspot/share/gc/shenandoah/shenandoahNMethod.cpp
+++ b/src/hotspot/share/gc/shenandoah/shenandoahNMethod.cpp
@@ -241,7 +241,7 @@ void ShenandoahNMethodTable::register_nmethod(nmethod* nm) {
     assert(nm == data->nm(), "Must be same nmethod");
     // Prevent updating a nmethod while concurrent iteration is in progress.
     wait_until_concurrent_iteration_done();
-    ShenandoahReentrantLocker data_locker(data->lock());
+    ShenandoahNMethodLocker data_locker(data->lock());
     data->update();
   } else {
     // For a new nmethod, we can safely append it to the list, because
diff --git a/src/hotspot/share/gc/shenandoah/shenandoahNMethod.hpp b/src/hotspot/share/gc/shenandoah/shenandoahNMethod.hpp
index 77faf6c0dcb..2686b4f4985 100644
--- a/src/hotspot/share/gc/shenandoah/shenandoahNMethod.hpp
+++ b/src/hotspot/share/gc/shenandoah/shenandoahNMethod.hpp
@@ -33,6 +33,10 @@
 #include "runtime/atomic.hpp"
 #include "utilities/growableArray.hpp"
 
+// Use ShenandoahReentrantLock as ShenandoahNMethodLock
+typedef ShenandoahReentrantLock<ShenandoahSimpleLock> ShenandoahNMethodLock;
+typedef ShenandoahLocker<ShenandoahNMethodLock>       ShenandoahNMethodLocker;
+
 // ShenandoahNMethod tuple records the internal locations of oop slots within reclocation stream in
 // the nmethod. This allows us to quickly scan the oops without doing the nmethod-internal scans,
 // that sometimes involves parsing the machine code. Note it does not record the oops themselves,
@@ -44,16 +48,16 @@ private:
   int                     _oops_count;
   bool                    _has_non_immed_oops;
   bool                    _unregistered;
-  ShenandoahReentrantLock _lock;
-  ShenandoahReentrantLock _ic_lock;
+  ShenandoahNMethodLock   _lock;
+  ShenandoahNMethodLock   _ic_lock;
 
 public:
   ShenandoahNMethod(nmethod *nm, GrowableArray<oop*>& oops, bool has_non_immed_oops);
   ~ShenandoahNMethod();
 
   inline nmethod* nm() const;
-  inline ShenandoahReentrantLock* lock();
-  inline ShenandoahReentrantLock* ic_lock();
+  inline ShenandoahNMethodLock* lock();
+  inline ShenandoahNMethodLock* ic_lock();
   inline void oops_do(OopClosure* oops, bool fix_relocations = false);
   // Update oops when the nmethod is re-registered
   void update();
@@ -61,8 +65,8 @@ public:
   inline bool is_unregistered() const;
 
   static ShenandoahNMethod* for_nmethod(nmethod* nm);
-  static inline ShenandoahReentrantLock* lock_for_nmethod(nmethod* nm);
-  static inline ShenandoahReentrantLock* ic_lock_for_nmethod(nmethod* nm);
+  static inline ShenandoahNMethodLock* lock_for_nmethod(nmethod* nm);
+  static inline ShenandoahNMethodLock* ic_lock_for_nmethod(nmethod* nm);
 
   static void heal_nmethod(nmethod* nm);
   static inline void heal_nmethod_metadata(ShenandoahNMethod* nmethod_data);
diff --git a/src/hotspot/share/gc/shenandoah/shenandoahNMethod.inline.hpp b/src/hotspot/share/gc/shenandoah/shenandoahNMethod.inline.hpp
index 6758298675b..ef9e347b821 100644
--- a/src/hotspot/share/gc/shenandoah/shenandoahNMethod.inline.hpp
+++ b/src/hotspot/share/gc/shenandoah/shenandoahNMethod.inline.hpp
@@ -35,11 +35,11 @@ nmethod* ShenandoahNMethod::nm() const {
   return _nm;
 }
 
-ShenandoahReentrantLock* ShenandoahNMethod::lock() {
+ShenandoahNMethodLock* ShenandoahNMethod::lock() {
   return &_lock;
 }
 
-ShenandoahReentrantLock* ShenandoahNMethod::ic_lock() {
+ShenandoahNMethodLock* ShenandoahNMethod::ic_lock() {
   return &_ic_lock;
 }
 
@@ -85,11 +85,11 @@ void ShenandoahNMethod::attach_gc_data(nmethod* nm, ShenandoahNMethod* gc_data)
   nm->set_gc_data<ShenandoahNMethod>(gc_data);
 }
 
-ShenandoahReentrantLock* ShenandoahNMethod::lock_for_nmethod(nmethod* nm) {
+ShenandoahNMethodLock* ShenandoahNMethod::lock_for_nmethod(nmethod* nm) {
   return gc_data(nm)->lock();
 }
 
-ShenandoahReentrantLock* ShenandoahNMethod::ic_lock_for_nmethod(nmethod* nm) {
+ShenandoahNMethodLock* ShenandoahNMethod::ic_lock_for_nmethod(nmethod* nm) {
   return gc_data(nm)->ic_lock();
 }
 
diff --git a/src/hotspot/share/gc/shenandoah/shenandoahReferenceProcessor.cpp b/src/hotspot/share/gc/shenandoah/shenandoahReferenceProcessor.cpp
index 7187431c8f8..37e9729b7ff 100644
--- a/src/hotspot/share/gc/shenandoah/shenandoahReferenceProcessor.cpp
+++ b/src/hotspot/share/gc/shenandoah/shenandoahReferenceProcessor.cpp
@@ -504,7 +504,7 @@ void ShenandoahReferenceProcessor::process_references(ShenandoahRefProcThreadLoc
   if (!CompressedOops::is_null(*list)) {
     oop head = lrb(CompressedOops::decode_not_null(*list));
     shenandoah_assert_not_in_cset_except(&head, head, ShenandoahHeap::heap()->cancelled_gc() || !ShenandoahLoadRefBarrier);
-    oop prev = AtomicAccess::xchg(&_pending_list, head);
+    oop prev = _pending_list.exchange(head);
     set_oop_field(p, prev);
     if (prev == nullptr) {
       // First to prepend to list, record tail
@@ -519,14 +519,14 @@ void ShenandoahReferenceProcessor::process_references(ShenandoahRefProcThreadLoc
 void ShenandoahReferenceProcessor::work() {
   // Process discovered references
   uint max_workers = ShenandoahHeap::heap()->max_workers();
-  uint worker_id = AtomicAccess::add(&_iterate_discovered_list_id, 1U, memory_order_relaxed) - 1;
+  uint worker_id = _iterate_discovered_list_id.fetch_then_add(1U, memory_order_relaxed);
   while (worker_id < max_workers) {
     if (UseCompressedOops) {
       process_references<narrowOop>(_ref_proc_thread_locals[worker_id], worker_id);
     } else {
       process_references<oop>(_ref_proc_thread_locals[worker_id], worker_id);
     }
-    worker_id = AtomicAccess::add(&_iterate_discovered_list_id, 1U, memory_order_relaxed) - 1;
+    worker_id = _iterate_discovered_list_id.fetch_then_add(1U, memory_order_relaxed);
   }
 }
 
@@ -559,7 +559,7 @@ public:
 
 void ShenandoahReferenceProcessor::process_references(ShenandoahPhaseTimings::Phase phase, WorkerThreads* workers, bool concurrent) {
 
-  AtomicAccess::release_store_fence(&_iterate_discovered_list_id, 0U);
+  _iterate_discovered_list_id.release_store_fence(0U);
 
   // Process discovered lists
   ShenandoahReferenceProcessorTask task(phase, concurrent, this);
@@ -576,7 +576,7 @@ void ShenandoahReferenceProcessor::process_references(ShenandoahPhaseTimings::Ph
 
 void ShenandoahReferenceProcessor::enqueue_references_locked() {
   // Prepend internal pending list to external pending list
-  shenandoah_assert_not_in_cset_except(&_pending_list, _pending_list, ShenandoahHeap::heap()->cancelled_gc() || !ShenandoahLoadRefBarrier);
+  shenandoah_assert_not_in_cset_except(&_pending_list, _pending_list.load_relaxed(), ShenandoahHeap::heap()->cancelled_gc() || !ShenandoahLoadRefBarrier);
 
   // During reference processing, we maintain a local list of references that are identified by
   //   _pending_list and _pending_list_tail.  _pending_list_tail points to the next field of the last Reference object on
@@ -589,7 +589,7 @@ void ShenandoahReferenceProcessor::enqueue_references_locked() {
   //  2. Overwriting the next field of the last Reference on my local list to point at the previous head of the
   //     global Universe::_reference_pending_list
 
-  oop former_head_of_global_list = Universe::swap_reference_pending_list(_pending_list);
+  oop former_head_of_global_list = Universe::swap_reference_pending_list(_pending_list.load_relaxed());
   if (UseCompressedOops) {
     set_oop_field<narrowOop>(reinterpret_cast<narrowOop*>(_pending_list_tail), former_head_of_global_list);
   } else {
@@ -598,7 +598,7 @@ void ShenandoahReferenceProcessor::enqueue_references_locked() {
 }
 
 void ShenandoahReferenceProcessor::enqueue_references(bool concurrent) {
-  if (_pending_list == nullptr) {
+  if (_pending_list.load_relaxed() == nullptr) {
     // Nothing to enqueue
     return;
   }
@@ -616,7 +616,7 @@ void ShenandoahReferenceProcessor::enqueue_references(bool concurrent) {
   }
 
   // Reset internal pending list
-  _pending_list = nullptr;
+  _pending_list.store_relaxed(nullptr);
   _pending_list_tail = &_pending_list;
 }
 
@@ -640,9 +640,9 @@ void ShenandoahReferenceProcessor::abandon_partial_discovery() {
       clean_discovered_list<oop>(_ref_proc_thread_locals[index].discovered_list_addr<oop>());
     }
   }
-  if (_pending_list != nullptr) {
-    oop pending = _pending_list;
-    _pending_list = nullptr;
+  if (_pending_list.load_relaxed() != nullptr) {
+    oop pending = _pending_list.load_relaxed();
+    _pending_list.store_relaxed(nullptr);
     if (UseCompressedOops) {
       narrowOop* list = reference_discovered_addr<narrowOop>(pending);
       clean_discovered_list<narrowOop>(list);
diff --git a/src/hotspot/share/gc/shenandoah/shenandoahReferenceProcessor.hpp b/src/hotspot/share/gc/shenandoah/shenandoahReferenceProcessor.hpp
index 14adb924585..01c79029132 100644
--- a/src/hotspot/share/gc/shenandoah/shenandoahReferenceProcessor.hpp
+++ b/src/hotspot/share/gc/shenandoah/shenandoahReferenceProcessor.hpp
@@ -31,6 +31,7 @@
 #include "gc/shared/referenceProcessorStats.hpp"
 #include "gc/shenandoah/shenandoahPhaseTimings.hpp"
 #include "memory/allocation.hpp"
+#include "runtime/atomic.hpp"
 
 class ShenandoahMarkRefsSuperClosure;
 class WorkerThreads;
@@ -133,10 +134,10 @@ private:
 
   ShenandoahRefProcThreadLocal* _ref_proc_thread_locals;
 
-  oop _pending_list;
+  Atomic<oop> _pending_list;
   void* _pending_list_tail; // T*
 
-  volatile uint _iterate_discovered_list_id;
+  Atomic<uint> _iterate_discovered_list_id;
 
   ReferenceProcessorStats _stats;
 
diff --git a/src/hotspot/share/gc/shenandoah/shenandoahUnload.cpp b/src/hotspot/share/gc/shenandoah/shenandoahUnload.cpp
index b248fab7958..ac7fe1f9a3a 100644
--- a/src/hotspot/share/gc/shenandoah/shenandoahUnload.cpp
+++ b/src/hotspot/share/gc/shenandoah/shenandoahUnload.cpp
@@ -80,7 +80,7 @@ public:
   virtual bool has_dead_oop(nmethod* nm) const {
     assert(ShenandoahHeap::heap()->is_concurrent_weak_root_in_progress(), "Only for this phase");
     ShenandoahNMethod* data = ShenandoahNMethod::gc_data(nm);
-    ShenandoahReentrantLocker locker(data->lock());
+    ShenandoahNMethodLocker locker(data->lock());
     ShenandoahIsUnloadingOopClosure cl;
     data->oops_do(&cl);
     return  cl.is_unloading();
@@ -90,14 +90,14 @@ public:
 class ShenandoahCompiledICProtectionBehaviour : public CompiledICProtectionBehaviour {
 public:
   virtual bool lock(nmethod* nm) {
-    ShenandoahReentrantLock* const lock = ShenandoahNMethod::ic_lock_for_nmethod(nm);
+    ShenandoahNMethodLock* const lock = ShenandoahNMethod::ic_lock_for_nmethod(nm);
     assert(lock != nullptr, "Not yet registered?");
     lock->lock();
     return true;
   }
 
   virtual void unlock(nmethod* nm) {
-    ShenandoahReentrantLock* const lock = ShenandoahNMethod::ic_lock_for_nmethod(nm);
+    ShenandoahNMethodLock* const lock = ShenandoahNMethod::ic_lock_for_nmethod(nm);
     assert(lock != nullptr, "Not yet registered?");
     lock->unlock();
   }
@@ -107,7 +107,7 @@ public:
       return true;
     }
 
-    ShenandoahReentrantLock* const lock = ShenandoahNMethod::ic_lock_for_nmethod(nm);
+    ShenandoahNMethodLock* const lock = ShenandoahNMethod::ic_lock_for_nmethod(nm);
     assert(lock != nullptr, "Not yet registered?");
     return lock->owned_by_self();
   }
diff --git a/src/hotspot/share/interpreter/interpreterRuntime.cpp b/src/hotspot/share/interpreter/interpreterRuntime.cpp
index ca7174389cf..e3cf5d589c2 100644
--- a/src/hotspot/share/interpreter/interpreterRuntime.cpp
+++ b/src/hotspot/share/interpreter/interpreterRuntime.cpp
@@ -711,9 +711,7 @@ void InterpreterRuntime::resolve_get_put(Bytecodes::Code bytecode, int field_ind
   }
 
   ResolvedFieldEntry* entry = pool->resolved_field_entry_at(field_index);
-  entry->set_flags(info.access_flags().is_final(), info.access_flags().is_volatile());
-  entry->fill_in(info.field_holder(), info.offset(),
-                 checked_cast<u2>(info.index()), checked_cast<u1>(state),
+  entry->fill_in(info, checked_cast<u1>(state),
                  static_cast<u1>(get_code), static_cast<u1>(put_code));
 }
 
@@ -1189,10 +1187,9 @@ JRT_LEAF(void, InterpreterRuntime::at_unwind(JavaThread* current))
 JRT_END
 
 JRT_ENTRY(void, InterpreterRuntime::post_field_access(JavaThread* current, oopDesc* obj,
-                                                      ResolvedFieldEntry *entry))
+                                                      ResolvedFieldEntry* entry))
 
   // check the access_flags for the field in the klass
-
   InstanceKlass* ik = entry->field_holder();
   int index = entry->field_index();
   if (!ik->field_status(index).is_access_watched()) return;
@@ -1212,11 +1209,10 @@ JRT_ENTRY(void, InterpreterRuntime::post_field_access(JavaThread* current, oopDe
 JRT_END
 
 JRT_ENTRY(void, InterpreterRuntime::post_field_modification(JavaThread* current, oopDesc* obj,
-                                                            ResolvedFieldEntry *entry, jvalue *value))
-
-  InstanceKlass* ik = entry->field_holder();
+                                                            ResolvedFieldEntry* entry, jvalue* value))
 
   // check the access_flags for the field in the klass
+  InstanceKlass* ik = entry->field_holder();
   int index = entry->field_index();
   // bail out if field modifications are not watched
   if (!ik->field_status(index).is_modification_watched()) return;
diff --git a/src/hotspot/share/oops/cpCache.hpp b/src/hotspot/share/oops/cpCache.hpp
index e9e4f9a40e5..14202f226d1 100644
--- a/src/hotspot/share/oops/cpCache.hpp
+++ b/src/hotspot/share/oops/cpCache.hpp
@@ -196,7 +196,7 @@ class ConstantPoolCache: public MetaspaceObj {
 #endif
 
  public:
-  static int size() { return align_metadata_size(sizeof(ConstantPoolCache) / wordSize); }
+  static int size() { return align_metadata_size(sizeof_auto(ConstantPoolCache) / wordSize); }
 
  private:
   // Helpers
diff --git a/src/hotspot/share/oops/resolvedFieldEntry.cpp b/src/hotspot/share/oops/resolvedFieldEntry.cpp
index 83f1a6919a6..49e9115ca9a 100644
--- a/src/hotspot/share/oops/resolvedFieldEntry.cpp
+++ b/src/hotspot/share/oops/resolvedFieldEntry.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2023, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2023, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -24,7 +24,12 @@
 
 #include "cds/archiveBuilder.hpp"
 #include "cppstdlib/type_traits.hpp"
+#include "oops/instanceKlass.hpp"
+#include "oops/instanceOop.hpp"
 #include "oops/resolvedFieldEntry.hpp"
+#include "runtime/fieldDescriptor.inline.hpp"
+#include "utilities/checkedCast.hpp"
+#include "utilities/globalDefinitions.hpp"
 
 static_assert(std::is_trivially_copyable_v<ResolvedFieldEntry>);
 
@@ -34,6 +39,19 @@ class ResolvedFieldEntryWithExtra : public ResolvedFieldEntry {
 };
 static_assert(sizeof(ResolvedFieldEntryWithExtra) > sizeof(ResolvedFieldEntry));
 
+void ResolvedFieldEntry::fill_in(const fieldDescriptor& info, u1 tos_state, u1 get_code, u1 put_code) {
+  set_flags(info.access_flags().is_final(), info.access_flags().is_volatile());
+  _field_holder = info.field_holder();
+  _field_offset = info.offset();
+  _field_index = checked_cast<u2>(info.index());
+  _tos_state = tos_state;
+
+  // These must be set after the other fields
+  set_bytecode(&_get_code, get_code);
+  set_bytecode(&_put_code, put_code);
+  assert_is_valid();
+}
+
 void ResolvedFieldEntry::print_on(outputStream* st) const {
   st->print_cr("Field Entry:");
 
@@ -52,6 +70,20 @@ void ResolvedFieldEntry::print_on(outputStream* st) const {
   st->print_cr(" - Put Bytecode: %s", Bytecodes::name((Bytecodes::Code)put_code()));
 }
 
+#ifdef ASSERT
+void ResolvedFieldEntry::assert_is_valid() const {
+  assert(field_holder()->is_instance_klass(), "should be instanceKlass");
+  assert(field_offset() >= instanceOopDesc::base_offset_in_bytes(),
+         "field offset out of range %d >= %d", field_offset(), instanceOopDesc::base_offset_in_bytes());
+  assert(as_BasicType((TosState)tos_state()) != T_ILLEGAL, "tos_state is ILLEGAL");
+  assert(_flags < (1 << (max_flag_shift + 1)), "flags are too large %d", _flags);
+  assert((get_code() == 0 || get_code() == Bytecodes::_getstatic || get_code() == Bytecodes::_getfield),
+         "invalid get bytecode %d", get_code());
+  assert((put_code() == 0 || put_code() == Bytecodes::_putstatic || put_code() == Bytecodes::_putfield),
+          "invalid put bytecode %d", put_code());
+}
+#endif
+
 #if INCLUDE_CDS
 void ResolvedFieldEntry::remove_unshareable_info() {
   *this = ResolvedFieldEntry(_cpool_index);
diff --git a/src/hotspot/share/oops/resolvedFieldEntry.hpp b/src/hotspot/share/oops/resolvedFieldEntry.hpp
index 77ad4815730..bdd9999dd63 100644
--- a/src/hotspot/share/oops/resolvedFieldEntry.hpp
+++ b/src/hotspot/share/oops/resolvedFieldEntry.hpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2023, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2023, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -26,7 +26,6 @@
 #define SHARE_OOPS_RESOLVEDFIELDENTRY_HPP
 
 #include "interpreter/bytecodes.hpp"
-#include "oops/instanceKlass.hpp"
 #include "runtime/atomicAccess.hpp"
 #include "utilities/checkedCast.hpp"
 #include "utilities/sizes.hpp"
@@ -46,7 +45,8 @@
 // The explicit paddings are necessary for generating deterministic CDS archives. They prevent
 // the C++ compiler from potentially inserting random values in unused gaps.
 
-//class InstanceKlass;
+class InstanceKlass;
+
 class ResolvedFieldEntry {
   friend class VMStructs;
 
@@ -84,6 +84,7 @@ public:
   enum {
       is_volatile_shift     = 0,
       is_final_shift        = 1, // unused
+      max_flag_shift        = is_final_shift
   };
 
   // Getters
@@ -113,6 +114,7 @@ public:
   // Printing
   void print_on(outputStream* st) const;
 
+ private:
   void set_flags(bool is_final_flag, bool is_volatile_flag) {
     int new_flags = (is_final_flag << is_final_shift) | static_cast<int>(is_volatile_flag);
     _flags = checked_cast<u1>(new_flags);
@@ -129,17 +131,12 @@ public:
     AtomicAccess::release_store(code, new_code);
   }
 
-  // Populate the strucutre with resolution information
-  void fill_in(InstanceKlass* klass, int offset, u2 index, u1 tos_state, u1 b1, u1 b2) {
-    _field_holder = klass;
-    _field_offset = offset;
-    _field_index = index;
-    _tos_state = tos_state;
+   // Debug help
+  void assert_is_valid() const NOT_DEBUG_RETURN;
 
-    // These must be set after the other fields
-    set_bytecode(&_get_code, b1);
-    set_bytecode(&_put_code, b2);
-  }
+ public:
+  // Populate the strucutre with resolution information
+  void fill_in(const fieldDescriptor& info, u1 tos_state, u1 get_code, u1 put_code);
 
   // CDS
 #if INCLUDE_CDS
@@ -155,7 +152,6 @@ public:
   static ByteSize put_code_offset()     { return byte_offset_of(ResolvedFieldEntry, _put_code);     }
   static ByteSize type_offset()         { return byte_offset_of(ResolvedFieldEntry, _tos_state);    }
   static ByteSize flags_offset()        { return byte_offset_of(ResolvedFieldEntry, _flags);        }
-
 };
 
 #endif //SHARE_OOPS_RESOLVEDFIELDENTRY_HPP
diff --git a/src/hotspot/share/opto/idealKit.cpp b/src/hotspot/share/opto/idealKit.cpp
index dd7e9ae52b7..fbb61bfdf72 100644
--- a/src/hotspot/share/opto/idealKit.cpp
+++ b/src/hotspot/share/opto/idealKit.cpp
@@ -360,6 +360,17 @@ Node* IdealKit::load(Node* ctl,
   return transform(ld);
 }
 
+// Load AOT runtime constant
+Node* IdealKit::load_aot_const(Node* adr, const Type* t) {
+  BasicType bt = t->basic_type();
+  const TypePtr* adr_type = nullptr; // debug-mode-only argument
+  DEBUG_ONLY(adr_type = C->get_adr_type(Compile::AliasIdxRaw));
+  Node* ctl = (Node*)C->root(); // Raw memory access needs control
+  Node* ld = LoadNode::make(_gvn, ctl, C->immutable_memory(), adr, adr_type, t, bt, MemNode::unordered,
+                            LoadNode::DependsOnlyOnTest, false, false, false, false, 0);
+  return transform(ld);
+}
+
 Node* IdealKit::store(Node* ctl, Node* adr, Node *val, BasicType bt,
                       int adr_idx,
                       MemNode::MemOrd mo, bool require_atomic_access,
diff --git a/src/hotspot/share/opto/idealKit.hpp b/src/hotspot/share/opto/idealKit.hpp
index 280f61fd9a9..518c3b92136 100644
--- a/src/hotspot/share/opto/idealKit.hpp
+++ b/src/hotspot/share/opto/idealKit.hpp
@@ -224,6 +224,9 @@ class IdealKit: public StackObj {
              MemNode::MemOrd mo = MemNode::unordered,
              LoadNode::ControlDependency control_dependency = LoadNode::DependsOnlyOnTest);
 
+  // Load AOT runtime constant
+  Node* load_aot_const(Node* adr, const Type* t);
+
   // Return the new StoreXNode
   Node* store(Node* ctl,
               Node* adr,
diff --git a/src/hotspot/share/opto/type.cpp b/src/hotspot/share/opto/type.cpp
index c637737eef9..1a0872ee0e6 100644
--- a/src/hotspot/share/opto/type.cpp
+++ b/src/hotspot/share/opto/type.cpp
@@ -97,7 +97,7 @@ const Type::TypeInfo Type::_type_info[Type::lastype] = {
   { Bad,             T_ILLEGAL,    "vectorz:",      false, Op_VecZ,              relocInfo::none          },  // VectorZ
 #endif
   { Bad,             T_ADDRESS,    "anyptr:",       false, Op_RegP,              relocInfo::none          },  // AnyPtr
-  { Bad,             T_ADDRESS,    "rawptr:",       false, Op_RegP,              relocInfo::none          },  // RawPtr
+  { Bad,             T_ADDRESS,    "rawptr:",       false, Op_RegP,              relocInfo::external_word_type },  // RawPtr
   { Bad,             T_OBJECT,     "oop:",          true,  Op_RegP,              relocInfo::oop_type      },  // OopPtr
   { Bad,             T_OBJECT,     "inst:",         true,  Op_RegP,              relocInfo::oop_type      },  // InstPtr
   { Bad,             T_OBJECT,     "ary:",          true,  Op_RegP,              relocInfo::oop_type      },  // AryPtr
diff --git a/src/hotspot/share/prims/jvm.cpp b/src/hotspot/share/prims/jvm.cpp
index 2b3a2966c27..423e1a5a1f4 100644
--- a/src/hotspot/share/prims/jvm.cpp
+++ b/src/hotspot/share/prims/jvm.cpp
@@ -3641,7 +3641,9 @@ JVM_ENTRY(jobjectArray, JVM_GetVmArguments(JNIEnv *env))
 
   int index = 0;
   for (int j = 0; j < num_flags; j++, index++) {
-    Handle h = java_lang_String::create_from_platform_dependent_str(vm_flags[j], CHECK_NULL);
+    stringStream prefixed;
+    prefixed.print("-XX:%s", vm_flags[j]);
+    Handle h = java_lang_String::create_from_platform_dependent_str(prefixed.base(), CHECK_NULL);
     result_h->obj_at_put(index, h());
   }
   for (int i = 0; i < num_args; i++, index++) {
diff --git a/src/hotspot/share/prims/jvmtiEnvBase.cpp b/src/hotspot/share/prims/jvmtiEnvBase.cpp
index 4894a4dd21a..401bb4dfdb8 100644
--- a/src/hotspot/share/prims/jvmtiEnvBase.cpp
+++ b/src/hotspot/share/prims/jvmtiEnvBase.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -2491,7 +2491,7 @@ SetOrClearFramePopClosure::do_thread(Thread *target) {
     _result = JVMTI_ERROR_NO_MORE_FRAMES;
     return;
   }
-  assert(_state->get_thread_or_saved() == java_thread, "Must be");
+  assert(_state->get_thread() == java_thread, "Must be");
 
   RegisterMap reg_map(java_thread,
                       RegisterMap::UpdateMap::include,
diff --git a/src/hotspot/share/prims/jvmtiEnvThreadState.cpp b/src/hotspot/share/prims/jvmtiEnvThreadState.cpp
index 571c4ca5528..303923076b1 100644
--- a/src/hotspot/share/prims/jvmtiEnvThreadState.cpp
+++ b/src/hotspot/share/prims/jvmtiEnvThreadState.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -151,11 +151,6 @@ bool JvmtiEnvThreadState::is_virtual() {
   return _state->is_virtual();
 }
 
-// Use _thread_saved if cthread is detached from JavaThread (_thread == nullptr).
-JavaThread* JvmtiEnvThreadState::get_thread_or_saved() {
-  return _state->get_thread_or_saved();
-}
-
 JavaThread* JvmtiEnvThreadState::get_thread() {
   return _state->get_thread();
 }
@@ -344,7 +339,7 @@ void JvmtiEnvThreadState::reset_current_location(jvmtiEvent event_type, bool ena
   if (enabled) {
     // If enabling breakpoint, no need to reset.
     // Can't do anything if empty stack.
-    JavaThread* thread = get_thread_or_saved();
+    JavaThread* thread = get_thread();
 
     if (event_type == JVMTI_EVENT_SINGLE_STEP &&
         ((thread == nullptr && is_virtual()) || thread->has_last_Java_frame())) {
diff --git a/src/hotspot/share/prims/jvmtiEnvThreadState.hpp b/src/hotspot/share/prims/jvmtiEnvThreadState.hpp
index a2ab25a59dd..16b369e0857 100644
--- a/src/hotspot/share/prims/jvmtiEnvThreadState.hpp
+++ b/src/hotspot/share/prims/jvmtiEnvThreadState.hpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -170,8 +170,6 @@ public:
 
   inline JvmtiThreadState* jvmti_thread_state() { return _state; }
 
-  // use _thread_saved if cthread is detached from JavaThread
-  JavaThread *get_thread_or_saved();
   JavaThread *get_thread();
   inline JvmtiEnv *get_env() { return _env; }
 
diff --git a/src/hotspot/share/prims/jvmtiEventController.cpp b/src/hotspot/share/prims/jvmtiEventController.cpp
index 9df3bbb4b3e..cb44b833c48 100644
--- a/src/hotspot/share/prims/jvmtiEventController.cpp
+++ b/src/hotspot/share/prims/jvmtiEventController.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -217,6 +217,10 @@ class EnterInterpOnlyModeClosure : public HandshakeClosure {
 
     assert(state != nullptr, "sanity check");
     assert(state->get_thread() == jt, "handshake unsafe conditions");
+    assert(jt->jvmti_thread_state() == state, "sanity check");
+    assert(!jt->is_interp_only_mode(), "sanity check");
+    assert(!state->is_interp_only_mode(), "sanity check");
+
     if (!state->is_pending_interp_only_mode()) {
       _completed = true;
       return;  // The pending flag has been already cleared, so bail out.
@@ -361,7 +365,8 @@ void VM_ChangeSingleStep::doit() {
 
 void JvmtiEventControllerPrivate::enter_interp_only_mode(JvmtiThreadState *state) {
   EC_TRACE(("[%s] # Entering interpreter only mode",
-            JvmtiTrace::safe_get_thread_name(state->get_thread_or_saved())));
+            JvmtiTrace::safe_get_thread_name(state->get_thread())));
+
   JavaThread *target = state->get_thread();
   Thread *current = Thread::current();
 
@@ -371,8 +376,13 @@ void JvmtiEventControllerPrivate::enter_interp_only_mode(JvmtiThreadState *state
   }
   // This flag will be cleared in EnterInterpOnlyModeClosure handshake.
   state->set_pending_interp_only_mode(true);
-  if (target == nullptr) { // an unmounted virtual thread
-    return;  // EnterInterpOnlyModeClosure will be executed right after mount.
+
+  // There are two cases when entering interp_only_mode is postponed:
+  // 1. Unmounted virtual thread - EnterInterpOnlyModeClosure::do_thread will be executed at mount;
+  // 2. Carrier thread with mounted virtual thread - EnterInterpOnlyModeClosure::do_thread will be executed at unmount.
+  if (target == nullptr ||                                                         // an unmounted virtual thread
+      JvmtiEnvBase::is_thread_carrying_vthread(target, state->get_thread_oop())) { // a vthread carrying thread
+    return;  // EnterInterpOnlyModeClosure will be executed right after mount or unmount.
   }
   EnterInterpOnlyModeClosure hs(state);
   if (target->is_handshake_safe_for(current)) {
@@ -388,7 +398,8 @@ void JvmtiEventControllerPrivate::enter_interp_only_mode(JvmtiThreadState *state
 void
 JvmtiEventControllerPrivate::leave_interp_only_mode(JvmtiThreadState *state) {
   EC_TRACE(("[%s] # Leaving interpreter only mode",
-            JvmtiTrace::safe_get_thread_name(state->get_thread_or_saved())));
+            JvmtiTrace::safe_get_thread_name(state->get_thread())));
+
   if (state->is_pending_interp_only_mode()) {
     state->set_pending_interp_only_mode(false);  // Just clear the pending flag.
     assert(!state->is_interp_only_mode(), "sanity check");
@@ -409,7 +420,7 @@ JvmtiEventControllerPrivate::trace_changed(JvmtiThreadState *state, jlong now_en
       if (changed & bit) {
         // it changed, print it
          log_trace(jvmti)("[%s] # %s event %s",
-                      JvmtiTrace::safe_get_thread_name(state->get_thread_or_saved()),
+                      JvmtiTrace::safe_get_thread_name(state->get_thread()),
                       (now_enabled & bit)? "Enabling" : "Disabling", JvmtiTrace::event_name((jvmtiEvent)ei));
       }
     }
@@ -932,7 +943,7 @@ JvmtiEventControllerPrivate::set_user_enabled(JvmtiEnvBase *env, JavaThread *thr
 void
 JvmtiEventControllerPrivate::set_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) {
   EC_TRACE(("[%s] # set frame pop - frame=%d",
-            JvmtiTrace::safe_get_thread_name(ets->get_thread_or_saved()),
+            JvmtiTrace::safe_get_thread_name(ets->get_thread()),
             fpop.frame_number() ));
 
   ets->get_frame_pops()->set(fpop);
@@ -943,7 +954,7 @@ JvmtiEventControllerPrivate::set_frame_pop(JvmtiEnvThreadState *ets, JvmtiFrameP
 void
 JvmtiEventControllerPrivate::clear_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) {
   EC_TRACE(("[%s] # clear frame pop - frame=%d",
-            JvmtiTrace::safe_get_thread_name(ets->get_thread_or_saved()),
+            JvmtiTrace::safe_get_thread_name(ets->get_thread()),
             fpop.frame_number() ));
 
   ets->get_frame_pops()->clear(fpop);
@@ -953,7 +964,7 @@ JvmtiEventControllerPrivate::clear_frame_pop(JvmtiEnvThreadState *ets, JvmtiFram
 void
 JvmtiEventControllerPrivate::clear_all_frame_pops(JvmtiEnvThreadState *ets) {
   EC_TRACE(("[%s] # clear all frame pops",
-            JvmtiTrace::safe_get_thread_name(ets->get_thread_or_saved())
+            JvmtiTrace::safe_get_thread_name(ets->get_thread())
           ));
 
   ets->get_frame_pops()->clear_all();
@@ -965,7 +976,7 @@ JvmtiEventControllerPrivate::clear_to_frame_pop(JvmtiEnvThreadState *ets, JvmtiF
   int cleared_cnt = ets->get_frame_pops()->clear_to(fpop);
 
   EC_TRACE(("[%s] # clear to frame pop - frame=%d, count=%d",
-            JvmtiTrace::safe_get_thread_name(ets->get_thread_or_saved()),
+            JvmtiTrace::safe_get_thread_name(ets->get_thread()),
             fpop.frame_number(),
             cleared_cnt ));
 
diff --git a/src/hotspot/share/prims/jvmtiThreadState.cpp b/src/hotspot/share/prims/jvmtiThreadState.cpp
index d7accfd9a0a..32bf2c4e98e 100644
--- a/src/hotspot/share/prims/jvmtiThreadState.cpp
+++ b/src/hotspot/share/prims/jvmtiThreadState.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -57,7 +57,6 @@ JvmtiThreadState::JvmtiThreadState(JavaThread* thread, oop thread_oop)
   : _thread_event_enable() {
   assert(JvmtiThreadState_lock->is_locked(), "sanity check");
   _thread               = thread;
-  _thread_saved         = nullptr;
   _exception_state      = ES_CLEARED;
   _hide_single_stepping = false;
   _pending_interp_only_mode = false;
@@ -118,11 +117,11 @@ JvmtiThreadState::JvmtiThreadState(JavaThread* thread, oop thread_oop)
 
   if (thread != nullptr) {
     if (thread_oop == nullptr || thread->jvmti_vthread() == nullptr || thread->jvmti_vthread() == thread_oop) {
-      // The JavaThread for carrier or mounted virtual thread case.
+      // The JavaThread for an active carrier or a mounted virtual thread case.
       // Set this only if thread_oop is current thread->jvmti_vthread().
       thread->set_jvmti_thread_state(this);
+      assert(!thread->is_interp_only_mode(), "sanity check");
     }
-    thread->set_interp_only_mode(false);
   }
 }
 
@@ -135,7 +134,10 @@ JvmtiThreadState::~JvmtiThreadState()   {
   }
 
   // clear this as the state for the thread
+  assert(get_thread() != nullptr, "sanity check");
+  assert(get_thread()->jvmti_thread_state() == this, "sanity check");
   get_thread()->set_jvmti_thread_state(nullptr);
+  get_thread()->set_interp_only_mode(false);
 
   // zap our env thread states
   {
@@ -323,6 +325,9 @@ void JvmtiThreadState::enter_interp_only_mode() {
   assert(_thread != nullptr, "sanity check");
   assert(JvmtiThreadState_lock->is_locked(), "sanity check");
   assert(!is_interp_only_mode(), "entering interp only when in interp only mode");
+  assert(_thread->jvmti_vthread() == nullptr || _thread->jvmti_vthread() == get_thread_oop(), "sanity check");
+  assert(_thread->jvmti_thread_state() == this, "sanity check");
+  _saved_interp_only_mode = true;
   _thread->set_interp_only_mode(true);
   invalidate_cur_stack_depth();
 }
@@ -330,10 +335,9 @@ void JvmtiThreadState::enter_interp_only_mode() {
 void JvmtiThreadState::leave_interp_only_mode() {
   assert(JvmtiThreadState_lock->is_locked(), "sanity check");
   assert(is_interp_only_mode(), "leaving interp only when not in interp only mode");
-  if (_thread == nullptr) {
-    // Unmounted virtual thread updates the saved value.
-    _saved_interp_only_mode = false;
-  } else {
+  _saved_interp_only_mode = false;
+  if (_thread != nullptr && _thread->jvmti_thread_state() == this) {
+    assert(_thread->jvmti_vthread() == nullptr || _thread->jvmti_vthread() == get_thread_oop(), "sanity check");
     _thread->set_interp_only_mode(false);
   }
 }
@@ -341,7 +345,7 @@ void JvmtiThreadState::leave_interp_only_mode() {
 
 // Helper routine used in several places
 int JvmtiThreadState::count_frames() {
-  JavaThread* thread = get_thread_or_saved();
+  JavaThread* thread = get_thread();
   javaVFrame *jvf;
   ResourceMark rm;
   if (thread == nullptr) {
@@ -578,11 +582,8 @@ void JvmtiThreadState::update_thread_oop_during_vm_start() {
   }
 }
 
+// For virtual threads only.
 void JvmtiThreadState::set_thread(JavaThread* thread) {
-  _thread_saved = nullptr;  // Common case.
-  if (!_is_virtual && thread == nullptr) {
-    // Save JavaThread* if carrier thread is being detached.
-    _thread_saved = _thread;
-  }
+  assert(is_virtual(), "sanity check");
   _thread = thread;
 }
diff --git a/src/hotspot/share/prims/jvmtiThreadState.hpp b/src/hotspot/share/prims/jvmtiThreadState.hpp
index 866d8828c4c..fa77518a8b6 100644
--- a/src/hotspot/share/prims/jvmtiThreadState.hpp
+++ b/src/hotspot/share/prims/jvmtiThreadState.hpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -123,8 +123,11 @@ class JvmtiVTSuspender : AllStatic {
 class JvmtiThreadState : public CHeapObj<mtInternal> {
  private:
   friend class JvmtiEnv;
+  // The _thread field is a link to the JavaThread associated with JvmtiThreadState.
+  // A platform (including carrier) thread should always have a stable link to its JavaThread.
+  // The _thread field of a virtual thread should point to the JavaThread when
+  // virtual thread is mounted. It should be set to null when it is unmounted.
   JavaThread        *_thread;
-  JavaThread        *_thread_saved;
   OopHandle         _thread_oop_h;
   // Jvmti Events that cannot be posted in their current context.
   JvmtiDeferredEventQueue* _jvmti_event_queue;
@@ -219,7 +222,7 @@ class JvmtiThreadState : public CHeapObj<mtInternal> {
 
   // Used by the interpreter for fullspeed debugging support
   bool is_interp_only_mode()                {
-    return _thread == nullptr ? _saved_interp_only_mode : _thread->is_interp_only_mode();
+    return _saved_interp_only_mode;
   }
   void enter_interp_only_mode();
   void leave_interp_only_mode();
@@ -248,8 +251,10 @@ class JvmtiThreadState : public CHeapObj<mtInternal> {
 
   int count_frames();
 
-  inline JavaThread *get_thread()      { return _thread;              }
-  inline JavaThread *get_thread_or_saved(); // return _thread_saved if _thread is null
+  inline JavaThread *get_thread()      {
+    assert(is_virtual() || _thread != nullptr, "sanity check");
+    return _thread;
+  }
 
   // Needed for virtual threads as they can migrate to different JavaThread's.
   // Also used for carrier threads to clear/restore _thread.
diff --git a/src/hotspot/share/prims/jvmtiThreadState.inline.hpp b/src/hotspot/share/prims/jvmtiThreadState.inline.hpp
index 831a2369a7e..aa81463a696 100644
--- a/src/hotspot/share/prims/jvmtiThreadState.inline.hpp
+++ b/src/hotspot/share/prims/jvmtiThreadState.inline.hpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2006, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -130,22 +130,21 @@ inline JvmtiThreadState* JvmtiThreadState::state_for(JavaThread *thread, Handle
   return state;
 }
 
-inline JavaThread* JvmtiThreadState::get_thread_or_saved() {
-  // Use _thread_saved if cthread is detached from JavaThread (_thread == null).
-  return (_thread == nullptr && !is_virtual()) ? _thread_saved : _thread;
-}
-
 inline void JvmtiThreadState::set_should_post_on_exceptions(bool val) {
-  get_thread_or_saved()->set_should_post_on_exceptions_flag(val ? JNI_TRUE : JNI_FALSE);
+  get_thread()->set_should_post_on_exceptions_flag(val ? JNI_TRUE : JNI_FALSE);
 }
 
 inline void JvmtiThreadState::unbind_from(JvmtiThreadState* state, JavaThread* thread) {
   if (state == nullptr) {
+    assert(!thread->is_interp_only_mode(), "sanity check");
     return;
   }
-  // Save thread's interp_only_mode.
-  state->_saved_interp_only_mode = thread->is_interp_only_mode();
-  state->set_thread(nullptr);  // Make sure stale _thread value is never used.
+  assert(thread->jvmti_thread_state() == state, "sanity check");
+  assert(state->get_thread() == thread, "sanity check");
+  assert(thread->is_interp_only_mode() == state->_saved_interp_only_mode, "sanity check");
+  if (state->is_virtual()) {    // clean _thread link for virtual threads only
+    state->set_thread(nullptr); // make sure stale _thread value is never used
+  }
 }
 
 inline void JvmtiThreadState::bind_to(JvmtiThreadState* state, JavaThread* thread) {
@@ -158,7 +157,7 @@ inline void JvmtiThreadState::bind_to(JvmtiThreadState* state, JavaThread* threa
   // Bind JavaThread to JvmtiThreadState.
   thread->set_jvmti_thread_state(state);
 
-  if (state != nullptr) {
+  if (state != nullptr && state->is_virtual()) {
     // Bind to JavaThread.
     state->set_thread(thread);
   }
diff --git a/src/hotspot/share/utilities/globalDefinitions.hpp b/src/hotspot/share/utilities/globalDefinitions.hpp
index ea4f6f99ae6..9560d863a2c 100644
--- a/src/hotspot/share/utilities/globalDefinitions.hpp
+++ b/src/hotspot/share/utilities/globalDefinitions.hpp
@@ -168,6 +168,29 @@ class oopDesc;
 #define SIZE_FORMAT_X_0          "0x%08"      PRIxPTR
 #endif  // _LP64
 
+
+template<size_t N>
+constexpr auto sizeof_auto_impl() {
+  if constexpr (N <= std::numeric_limits<uint8_t>::max()) return uint8_t(N);
+  else if constexpr (N <= std::numeric_limits<uint16_t>::max()) return uint16_t(N);
+  else if constexpr (N <= std::numeric_limits<uint32_t>::max()) return uint32_t(N);
+  else return uint64_t(N);
+}
+
+// Yields the size (in bytes) of the operand, using the smallest
+// unsigned type that can represent the size value. The operand may be
+// an expression, which is an unevaluated operand, or it may be a
+// type. All of the restrictions for sizeof operands apply to the
+// operand. The result is a constant expression.
+//
+// Example of correct usage of sizeof/sizeof_auto:
+//   // this will wrap using sizeof_auto, use sizeof to ensure computation using size_t
+//   size_t size = std::numeric_limits<uint32_t>::max() * sizeof(uint16_t);
+//   // implicit narrowing conversion or compiler warning/error using stricter compiler flags when using sizeof
+//   int count = 42 / sizeof_auto(uint16_t);
+
+#define sizeof_auto(...) sizeof_auto_impl<sizeof(__VA_ARGS__)>()
+
 // Convert pointer to intptr_t, for use in printing pointers.
 inline intptr_t p2i(const volatile void* p) {
   return (intptr_t) p;
diff --git a/src/java.base/share/classes/java/lang/Character.java b/src/java.base/share/classes/java/lang/Character.java
index ffda729a45a..33284d86e2d 100644
--- a/src/java.base/share/classes/java/lang/Character.java
+++ b/src/java.base/share/classes/java/lang/Character.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2002, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2002, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -11233,7 +11233,7 @@ class Character implements java.io.Serializable, Comparable<Character>, Constabl
      * @param   codePoint the character (Unicode code point) to be tested.
      * @return  {@code true} if the character is an Emoji;
      *          {@code false} otherwise.
-     * @spec https://unicode.org/reports/tr51/ Unicode Emoji
+     * @spec https://www.unicode.org/reports/tr51/ Unicode Emoji
      * @since   21
      */
     public static boolean isEmoji(int codePoint) {
@@ -11252,7 +11252,7 @@ class Character implements java.io.Serializable, Comparable<Character>, Constabl
      * @param   codePoint the character (Unicode code point) to be tested.
      * @return  {@code true} if the character has the Emoji Presentation
      *          property; {@code false} otherwise.
-     * @spec https://unicode.org/reports/tr51/ Unicode Emoji
+     * @spec https://www.unicode.org/reports/tr51/ Unicode Emoji
      * @since   21
      */
     public static boolean isEmojiPresentation(int codePoint) {
@@ -11271,7 +11271,7 @@ class Character implements java.io.Serializable, Comparable<Character>, Constabl
      * @param   codePoint the character (Unicode code point) to be tested.
      * @return  {@code true} if the character is an Emoji Modifier;
      *          {@code false} otherwise.
-     * @spec https://unicode.org/reports/tr51/ Unicode Emoji
+     * @spec https://www.unicode.org/reports/tr51/ Unicode Emoji
      * @since   21
      */
     public static boolean isEmojiModifier(int codePoint) {
@@ -11290,7 +11290,7 @@ class Character implements java.io.Serializable, Comparable<Character>, Constabl
      * @param   codePoint the character (Unicode code point) to be tested.
      * @return  {@code true} if the character is an Emoji Modifier Base;
      *          {@code false} otherwise.
-     * @spec https://unicode.org/reports/tr51/ Unicode Emoji
+     * @spec https://www.unicode.org/reports/tr51/ Unicode Emoji
      * @since   21
      */
     public static boolean isEmojiModifierBase(int codePoint) {
@@ -11309,7 +11309,7 @@ class Character implements java.io.Serializable, Comparable<Character>, Constabl
      * @param   codePoint the character (Unicode code point) to be tested.
      * @return  {@code true} if the character is an Emoji Component;
      *          {@code false} otherwise.
-     * @spec https://unicode.org/reports/tr51/ Unicode Emoji
+     * @spec https://www.unicode.org/reports/tr51/ Unicode Emoji
      * @since   21
      */
     public static boolean isEmojiComponent(int codePoint) {
@@ -11328,7 +11328,7 @@ class Character implements java.io.Serializable, Comparable<Character>, Constabl
      * @param   codePoint the character (Unicode code point) to be tested.
      * @return  {@code true} if the character is an Extended Pictographic;
      *          {@code false} otherwise.
-     * @spec https://unicode.org/reports/tr51/ Unicode Emoji
+     * @spec https://www.unicode.org/reports/tr51/ Unicode Emoji
      * @since   21
      */
     public static boolean isExtendedPictographic(int codePoint) {
diff --git a/src/java.base/share/classes/java/lang/Shutdown.java b/src/java.base/share/classes/java/lang/Shutdown.java
index 87c4732a5ce..a9d4d6a28a9 100644
--- a/src/java.base/share/classes/java/lang/Shutdown.java
+++ b/src/java.base/share/classes/java/lang/Shutdown.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -55,11 +55,10 @@ class Shutdown {
     private static int currentRunningHook = -1;
 
     /* The preceding static fields are protected by this lock */
-    private static class Lock { };
-    private static Object lock = new Lock();
+    private static final Object lock = new Object();
 
     /* Lock object for the native halt method */
-    private static Object haltLock = new Lock();
+    private static final Object haltLock = new Object();
 
     /**
      * Add a new system shutdown hook.  Checks the shutdown state and
diff --git a/src/java.base/share/classes/java/lang/invoke/ClassSpecializer.java b/src/java.base/share/classes/java/lang/invoke/ClassSpecializer.java
index 4b6d74b1b2e..be3805cf5b1 100644
--- a/src/java.base/share/classes/java/lang/invoke/ClassSpecializer.java
+++ b/src/java.base/share/classes/java/lang/invoke/ClassSpecializer.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -746,15 +746,7 @@ abstract class ClassSpecializer<T,K,S extends ClassSpecializer<T,K,S>.SpeciesDat
                             new Consumer<>() {
                                 @Override
                                 public void accept(CodeBuilder cob) {
-                                    cob.aload(0); // this
-
                                     final List<Var> ctorArgs = AFTER_THIS.fromTypes(superCtorType.parameterList());
-                                    for (Var ca : ctorArgs) {
-                                        ca.emitLoadInstruction(cob);
-                                    }
-
-                                    // super(ca...)
-                                    cob.invokespecial(superClassDesc, INIT_NAME, methodDesc(superCtorType));
 
                                     // store down fields
                                     Var lastFV = AFTER_THIS.lastOf(ctorArgs);
@@ -766,6 +758,12 @@ abstract class ClassSpecializer<T,K,S extends ClassSpecializer<T,K,S>.SpeciesDat
                                         cob.putfield(classDesc, f.name, f.desc);
                                     }
 
+                                    // super(ca...)
+                                    cob.aload(0); // this
+                                    for (Var ca : ctorArgs) {
+                                        ca.emitLoadInstruction(cob);
+                                    }
+                                    cob.invokespecial(superClassDesc, INIT_NAME, methodDesc(superCtorType));
                                     cob.return_();
                                 }
                             });
diff --git a/src/java.base/share/classes/java/lang/invoke/InnerClassLambdaMetafactory.java b/src/java.base/share/classes/java/lang/invoke/InnerClassLambdaMetafactory.java
index 4dac59771e8..d5cfc6f11a2 100644
--- a/src/java.base/share/classes/java/lang/invoke/InnerClassLambdaMetafactory.java
+++ b/src/java.base/share/classes/java/lang/invoke/InnerClassLambdaMetafactory.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012, 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -391,15 +391,15 @@ import sun.invoke.util.Wrapper;
                 new Consumer<>() {
                     @Override
                     public void accept(CodeBuilder cob) {
-                        cob.aload(0)
-                           .invokespecial(CD_Object, INIT_NAME, MTD_void);
                         int parameterCount = factoryType.parameterCount();
                         for (int i = 0; i < parameterCount; i++) {
                             cob.aload(0)
                                .loadLocal(TypeKind.from(factoryType.parameterType(i)), cob.parameterSlot(i))
                                .putfield(pool.fieldRefEntry(lambdaClassEntry, pool.nameAndTypeEntry(argName(i), argDescs[i])));
                         }
-                        cob.return_();
+                        cob.aload(0)
+                           .invokespecial(CD_Object, INIT_NAME, MTD_void)
+                           .return_();
                     }
                 });
     }
diff --git a/src/java.base/share/classes/java/lang/invoke/MethodHandleProxies.java b/src/java.base/share/classes/java/lang/invoke/MethodHandleProxies.java
index 70592351827..16f5c7e59b8 100644
--- a/src/java.base/share/classes/java/lang/invoke/MethodHandleProxies.java
+++ b/src/java.base/share/classes/java/lang/invoke/MethodHandleProxies.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2008, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -362,10 +362,8 @@ public final class MethodHandleProxies {
 
             // <init>(Lookup, MethodHandle target, MethodHandle callerBoundTarget)
             clb.withMethodBody(INIT_NAME, MTD_void_Lookup_MethodHandle_MethodHandle, 0, cob -> {
-                cob.aload(0)
-                   .invokespecial(CD_Object, INIT_NAME, MTD_void)
-                   // call ensureOriginalLookup to verify the given Lookup has access
-                   .aload(1)
+                // call ensureOriginalLookup to verify the given Lookup has access
+                cob.aload(1)
                    .invokestatic(proxyDesc, ENSURE_ORIGINAL_LOOKUP, MTD_void_Lookup)
                    // this.target = target;
                    .aload(0)
@@ -383,7 +381,9 @@ public final class MethodHandleProxies {
                 }
 
                 // complete
-                cob.return_();
+                cob.aload(0)
+                   .invokespecial(CD_Object, INIT_NAME, MTD_void)
+                   .return_();
             });
 
             // private static void ensureOriginalLookup(Lookup) checks if the given Lookup
diff --git a/src/java.base/share/classes/java/lang/ref/ReferenceQueue.java b/src/java.base/share/classes/java/lang/ref/ReferenceQueue.java
index d3879d4a8fc..ee1892e8878 100644
--- a/src/java.base/share/classes/java/lang/ref/ReferenceQueue.java
+++ b/src/java.base/share/classes/java/lang/ref/ReferenceQueue.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -60,8 +60,7 @@ public class ReferenceQueue<@jdk.internal.RequiresIdentity T> {
     private volatile Reference<? extends T> head;
     private long queueLength = 0;
 
-    private static class Lock { };
-    private final Lock lock = new Lock();
+    private final Object lock = new Object();
 
     /**
      * Constructs a new reference-object queue.
diff --git a/src/java.base/share/classes/java/lang/runtime/ObjectMethods.java b/src/java.base/share/classes/java/lang/runtime/ObjectMethods.java
index 18aa6f29f1f..e4b2886404f 100644
--- a/src/java.base/share/classes/java/lang/runtime/ObjectMethods.java
+++ b/src/java.base/share/classes/java/lang/runtime/ObjectMethods.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -363,9 +363,9 @@ public final class ObjectMethods {
      * @return the method handle
      */
     private static MethodHandle makeToString(MethodHandles.Lookup lookup,
-                                            Class<?> receiverClass,
-                                            MethodHandle[] getters,
-                                            List<String> names) {
+                                             Class<?> receiverClass,
+                                             MethodHandle[] getters,
+                                             List<String> names) {
         assert getters.length == names.size();
         if (getters.length == 0) {
             // special case
@@ -516,8 +516,8 @@ public final class ObjectMethods {
         requireNonNull(type);
         requireNonNull(recordClass);
         requireNonNull(names);
-        requireNonNull(getters);
-        Arrays.stream(getters).forEach(Objects::requireNonNull);
+        List<MethodHandle> getterList = List.of(getters); // deep null check
+
         MethodType methodType;
         if (type instanceof MethodType mt)
             methodType = mt;
@@ -526,7 +526,14 @@ public final class ObjectMethods {
             if (!MethodHandle.class.equals(type))
                 throw new IllegalArgumentException(type.toString());
         }
-        List<MethodHandle> getterList = List.of(getters);
+
+        for (MethodHandle getter : getterList) {
+            var getterType = getter.type();
+            if (getterType.parameterCount() != 1 || getterType.returnType() == void.class || getterType.parameterType(0) != recordClass) {
+                throw new IllegalArgumentException("Illegal getter type %s for recordClass %s".formatted(getterType, recordClass.getTypeName()));
+            }
+        }
+
         MethodHandle handle = switch (methodName) {
             case "equals"   -> {
                 if (methodType != null && !methodType.equals(MethodType.methodType(boolean.class, recordClass, Object.class)))
@@ -541,7 +548,7 @@ public final class ObjectMethods {
             case "toString" -> {
                 if (methodType != null && !methodType.equals(MethodType.methodType(String.class, recordClass)))
                     throw new IllegalArgumentException("Bad method type: " + methodType);
-                List<String> nameList = "".equals(names) ? List.of() : List.of(names.split(";"));
+                List<String> nameList = names.isEmpty() ? List.of() : List.of(names.split(";"));
                 if (nameList.size() != getterList.size())
                     throw new IllegalArgumentException("Name list and accessor list do not match");
                 yield makeToString(lookup, recordClass, getters, nameList);
diff --git a/src/java.base/share/classes/java/util/zip/ZipFile.java b/src/java.base/share/classes/java/util/zip/ZipFile.java
index 43a3b37b7d0..140d76c8c91 100644
--- a/src/java.base/share/classes/java/util/zip/ZipFile.java
+++ b/src/java.base/share/classes/java/util/zip/ZipFile.java
@@ -1719,8 +1719,10 @@ public class ZipFile implements ZipConstants, Closeable {
                     this.cen = null;
                     return;         // only END header present
                 }
-                if (end.cenlen > end.endpos)
+                // Validate END header
+                if (end.cenlen > end.endpos) {
                     zerror("invalid END header (bad central directory size)");
+                }
                 long cenpos = end.endpos - end.cenlen;     // position of CEN table
                 // Get position of first local file (LOC) header, taking into
                 // account that there may be a stub prefixed to the ZIP file.
@@ -1728,18 +1730,22 @@ public class ZipFile implements ZipConstants, Closeable {
                 if (locpos < 0) {
                     zerror("invalid END header (bad central directory offset)");
                 }
-                // read in the CEN
                 if (end.cenlen > MAX_CEN_SIZE) {
                     zerror("invalid END header (central directory size too large)");
                 }
                 if (end.centot < 0 || end.centot > end.cenlen / CENHDR) {
                     zerror("invalid END header (total entries count too large)");
                 }
-                cen = this.cen = new byte[(int)end.cenlen];
-                if (readFullyAt(cen, 0, cen.length, cenpos) != end.cenlen) {
+                // Validation ensures these are <= Integer.MAX_VALUE
+                int cenlen = Math.toIntExact(end.cenlen);
+                int centot = Math.toIntExact(end.centot);
+
+                // read in the CEN
+                cen = this.cen = new byte[cenlen];
+                if (readFullyAt(cen, 0, cen.length, cenpos) != cenlen) {
                     zerror("read CEN tables failed");
                 }
-                this.total = Math.toIntExact(end.centot);
+                this.total = centot;
             } else {
                 cen = this.cen;
                 this.total = knownTotal;
diff --git a/src/java.base/share/classes/jdk/internal/util/ArraysSupport.java b/src/java.base/share/classes/jdk/internal/util/ArraysSupport.java
index de7a5e44b91..c220455e80b 100644
--- a/src/java.base/share/classes/jdk/internal/util/ArraysSupport.java
+++ b/src/java.base/share/classes/jdk/internal/util/ArraysSupport.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -599,8 +599,8 @@ public class ArraysSupport {
         if (length > 3) {
             if (a[aFromIndex] != b[bFromIndex])
                 return 0;
-            long aOffset = Unsafe.ARRAY_CHAR_BASE_OFFSET + (aFromIndex << LOG2_ARRAY_CHAR_INDEX_SCALE);
-            long bOffset = Unsafe.ARRAY_CHAR_BASE_OFFSET + (bFromIndex << LOG2_ARRAY_CHAR_INDEX_SCALE);
+            long aOffset = Unsafe.ARRAY_CHAR_BASE_OFFSET + ((long) aFromIndex << LOG2_ARRAY_CHAR_INDEX_SCALE);
+            long bOffset = Unsafe.ARRAY_CHAR_BASE_OFFSET + ((long) bFromIndex << LOG2_ARRAY_CHAR_INDEX_SCALE);
             i = vectorizedMismatch(
                     a, aOffset,
                     b, bOffset,
@@ -648,8 +648,8 @@ public class ArraysSupport {
         if (length > 3) {
             if (a[aFromIndex] != b[bFromIndex])
                 return 0;
-            long aOffset = Unsafe.ARRAY_SHORT_BASE_OFFSET + (aFromIndex << LOG2_ARRAY_SHORT_INDEX_SCALE);
-            long bOffset = Unsafe.ARRAY_SHORT_BASE_OFFSET + (bFromIndex << LOG2_ARRAY_SHORT_INDEX_SCALE);
+            long aOffset = Unsafe.ARRAY_SHORT_BASE_OFFSET + ((long) aFromIndex << LOG2_ARRAY_SHORT_INDEX_SCALE);
+            long bOffset = Unsafe.ARRAY_SHORT_BASE_OFFSET + ((long) bFromIndex << LOG2_ARRAY_SHORT_INDEX_SCALE);
             i = vectorizedMismatch(
                     a, aOffset,
                     b, bOffset,
@@ -697,8 +697,8 @@ public class ArraysSupport {
         if (length > 1) {
             if (a[aFromIndex] != b[bFromIndex])
                 return 0;
-            long aOffset = Unsafe.ARRAY_INT_BASE_OFFSET + (aFromIndex << LOG2_ARRAY_INT_INDEX_SCALE);
-            long bOffset = Unsafe.ARRAY_INT_BASE_OFFSET + (bFromIndex << LOG2_ARRAY_INT_INDEX_SCALE);
+            long aOffset = Unsafe.ARRAY_INT_BASE_OFFSET + ((long) aFromIndex << LOG2_ARRAY_INT_INDEX_SCALE);
+            long bOffset = Unsafe.ARRAY_INT_BASE_OFFSET + ((long) bFromIndex << LOG2_ARRAY_INT_INDEX_SCALE);
             i = vectorizedMismatch(
                     a, aOffset,
                     b, bOffset,
@@ -729,8 +729,8 @@ public class ArraysSupport {
         int i = 0;
         if (length > 1) {
             if (Float.floatToRawIntBits(a[aFromIndex]) == Float.floatToRawIntBits(b[bFromIndex])) {
-                long aOffset = Unsafe.ARRAY_FLOAT_BASE_OFFSET + (aFromIndex << LOG2_ARRAY_FLOAT_INDEX_SCALE);
-                long bOffset = Unsafe.ARRAY_FLOAT_BASE_OFFSET + (bFromIndex << LOG2_ARRAY_FLOAT_INDEX_SCALE);
+                long aOffset = Unsafe.ARRAY_FLOAT_BASE_OFFSET + ((long) aFromIndex << LOG2_ARRAY_FLOAT_INDEX_SCALE);
+                long bOffset = Unsafe.ARRAY_FLOAT_BASE_OFFSET + ((long) bFromIndex << LOG2_ARRAY_FLOAT_INDEX_SCALE);
                 i = vectorizedMismatch(
                         a, aOffset,
                         b, bOffset,
@@ -787,8 +787,8 @@ public class ArraysSupport {
         }
         if (a[aFromIndex] != b[bFromIndex])
             return 0;
-        long aOffset = Unsafe.ARRAY_LONG_BASE_OFFSET + (aFromIndex << LOG2_ARRAY_LONG_INDEX_SCALE);
-        long bOffset = Unsafe.ARRAY_LONG_BASE_OFFSET + (bFromIndex << LOG2_ARRAY_LONG_INDEX_SCALE);
+        long aOffset = Unsafe.ARRAY_LONG_BASE_OFFSET + ((long) aFromIndex << LOG2_ARRAY_LONG_INDEX_SCALE);
+        long bOffset = Unsafe.ARRAY_LONG_BASE_OFFSET + ((long) bFromIndex << LOG2_ARRAY_LONG_INDEX_SCALE);
         int i = vectorizedMismatch(
                 a, aOffset,
                 b, bOffset,
@@ -813,8 +813,8 @@ public class ArraysSupport {
         }
         int i = 0;
         if (Double.doubleToRawLongBits(a[aFromIndex]) == Double.doubleToRawLongBits(b[bFromIndex])) {
-            long aOffset = Unsafe.ARRAY_DOUBLE_BASE_OFFSET + (aFromIndex << LOG2_ARRAY_DOUBLE_INDEX_SCALE);
-            long bOffset = Unsafe.ARRAY_DOUBLE_BASE_OFFSET + (bFromIndex << LOG2_ARRAY_DOUBLE_INDEX_SCALE);
+            long aOffset = Unsafe.ARRAY_DOUBLE_BASE_OFFSET + ((long) aFromIndex << LOG2_ARRAY_DOUBLE_INDEX_SCALE);
+            long bOffset = Unsafe.ARRAY_DOUBLE_BASE_OFFSET + ((long) bFromIndex << LOG2_ARRAY_DOUBLE_INDEX_SCALE);
             i = vectorizedMismatch(
                     a, aOffset,
                     b, bOffset,
diff --git a/src/java.base/share/classes/jdk/internal/vm/vector/VectorSupport.java b/src/java.base/share/classes/jdk/internal/vm/vector/VectorSupport.java
index 03f95222a52..23a787971c0 100644
--- a/src/java.base/share/classes/jdk/internal/vm/vector/VectorSupport.java
+++ b/src/java.base/share/classes/jdk/internal/vm/vector/VectorSupport.java
@@ -336,7 +336,7 @@ public class VectorSupport {
     @IntrinsicCandidate
     public static
     <V extends Vector<E>, E>
-    V libraryUnaryOp(long addr, Class<? extends V> vClass, Class<E> eClass, int length, String debugName,
+    V libraryUnaryOp(long addr, Class<? extends V> vClass, int laneType, int length, String debugName,
                      V v,
                      UnaryOperation<V,?> defaultImpl) {
         assert isNonCapturingLambda(defaultImpl) : defaultImpl;
@@ -374,7 +374,7 @@ public class VectorSupport {
     @IntrinsicCandidate
     public static
     <V extends VectorPayload, E>
-    V libraryBinaryOp(long addr, Class<? extends V> vClass, Class<E> eClass, int length, String debugName,
+    V libraryBinaryOp(long addr, Class<? extends V> vClass, int laneType, int length, String debugName,
                       V v1, V v2,
                       BinaryOperation<V,?> defaultImpl) {
         assert isNonCapturingLambda(defaultImpl) : defaultImpl;
diff --git a/src/java.desktop/macosx/classes/sun/font/CStrike.java b/src/java.desktop/macosx/classes/sun/font/CStrike.java
index bffb76fb1ad..f7fa00070ff 100644
--- a/src/java.desktop/macosx/classes/sun/font/CStrike.java
+++ b/src/java.desktop/macosx/classes/sun/font/CStrike.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -174,7 +174,19 @@ public final class CStrike extends PhysicalStrike {
 
     @Override
     Point2D.Float getGlyphMetrics(final int glyphCode) {
-        return new Point2D.Float(getGlyphAdvance(glyphCode), 0.0f);
+        Point2D.Float metrics = new Point2D.Float();
+        long glyphPtr = getGlyphImagePtr(glyphCode);
+        if (glyphPtr != 0L) {
+            metrics.x = StrikeCache.getGlyphXAdvance(glyphPtr);
+            metrics.y = StrikeCache.getGlyphYAdvance(glyphPtr);
+            /* advance is currently in device space, need to convert back
+             * into user space.
+             * This must not include the translation component. */
+            if (invDevTx != null) {
+                invDevTx.deltaTransform(metrics, metrics);
+            }
+        }
+        return metrics;
     }
 
     @Override
diff --git a/src/java.desktop/macosx/native/libawt_lwawt/awt/CImage.m b/src/java.desktop/macosx/native/libawt_lwawt/awt/CImage.m
index 051588f95bf..fa534fff275 100644
--- a/src/java.desktop/macosx/native/libawt_lwawt/awt/CImage.m
+++ b/src/java.desktop/macosx/native/libawt_lwawt/awt/CImage.m
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -270,7 +270,7 @@ JNI_COCOA_ENTER(env);
         NSRect fromRect = NSMakeRect(0, 0, sw, sh);
         NSRect toRect = NSMakeRect(0, 0, dw, dh);
         CImage_CopyNSImageIntoArray(img, dst, fromRect, toRect);
-        (*env)->ReleasePrimitiveArrayCritical(env, buffer, dst, JNI_ABORT);
+        (*env)->ReleasePrimitiveArrayCritical(env, buffer, dst, 0);
     }
 
 JNI_COCOA_EXIT(env);
diff --git a/src/java.desktop/share/classes/java/awt/ModalEventFilter.java b/src/java.desktop/share/classes/java/awt/ModalEventFilter.java
index 7941be89743..93956c34fc5 100644
--- a/src/java.desktop/share/classes/java/awt/ModalEventFilter.java
+++ b/src/java.desktop/share/classes/java/awt/ModalEventFilter.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -26,8 +26,6 @@ package java.awt;
 
 import java.awt.event.*;
 
-import sun.awt.AppContext;
-
 abstract class ModalEventFilter implements EventFilter {
 
     protected Dialog modalDialog;
@@ -129,20 +127,14 @@ abstract class ModalEventFilter implements EventFilter {
 
     private static class ToolkitModalEventFilter extends ModalEventFilter {
 
-        private AppContext appContext;
-
         ToolkitModalEventFilter(Dialog modalDialog) {
             super(modalDialog);
-            appContext = modalDialog.appContext;
         }
 
         protected FilterAction acceptWindow(Window w) {
             if (w.isModalExcluded(Dialog.ModalExclusionType.TOOLKIT_EXCLUDE)) {
                 return FilterAction.ACCEPT;
             }
-            if (w.appContext != appContext) {
-                return FilterAction.REJECT;
-            }
             while (w != null) {
                 if (w == modalDialog) {
                     return FilterAction.ACCEPT_IMMEDIATELY;
@@ -155,27 +147,21 @@ abstract class ModalEventFilter implements EventFilter {
 
     private static class ApplicationModalEventFilter extends ModalEventFilter {
 
-        private AppContext appContext;
-
         ApplicationModalEventFilter(Dialog modalDialog) {
             super(modalDialog);
-            appContext = modalDialog.appContext;
         }
 
         protected FilterAction acceptWindow(Window w) {
             if (w.isModalExcluded(Dialog.ModalExclusionType.APPLICATION_EXCLUDE)) {
                 return FilterAction.ACCEPT;
             }
-            if (w.appContext == appContext) {
-                while (w != null) {
-                    if (w == modalDialog) {
-                        return FilterAction.ACCEPT_IMMEDIATELY;
-                    }
-                    w = w.getOwner();
+            while (w != null) {
+                if (w == modalDialog) {
+                    return FilterAction.ACCEPT_IMMEDIATELY;
                 }
-                return FilterAction.REJECT;
+                w = w.getOwner();
             }
-            return FilterAction.ACCEPT;
+            return FilterAction.REJECT;
         }
     }
 
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/Chromaticity.java b/src/java.desktop/share/classes/javax/print/attribute/standard/Chromaticity.java
index 0481060f73f..25dbb7ddaca 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/Chromaticity.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/Chromaticity.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -114,6 +114,7 @@ public final class Chromaticity extends EnumSyntax
     /**
      * Returns the string table for class {@code Chromaticity}.
      */
+    @Override
     protected String[] getStringTable() {
         return myStringTable;
     }
@@ -121,6 +122,7 @@ public final class Chromaticity extends EnumSyntax
     /**
      * Returns the enumeration value table for class {@code Chromaticity}.
      */
+    @Override
     protected EnumSyntax[] getEnumValueTable() {
         return myEnumValueTable;
     }
@@ -135,6 +137,7 @@ public final class Chromaticity extends EnumSyntax
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return Chromaticity.class;
     }
@@ -148,6 +151,7 @@ public final class Chromaticity extends EnumSyntax
      *
      * @return attribute category name
      */
+    @Override
     public final String getName() {
         return "chromaticity";
     }
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/ColorSupported.java b/src/java.desktop/share/classes/javax/print/attribute/standard/ColorSupported.java
index 6affb3e28dc..8ce2c5eef7c 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/ColorSupported.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/ColorSupported.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -104,6 +104,7 @@ public final class ColorSupported extends EnumSyntax
     /**
      * Returns the string table for class {@code ColorSupported}.
      */
+    @Override
     protected String[] getStringTable() {
         return myStringTable;
     }
@@ -111,6 +112,7 @@ public final class ColorSupported extends EnumSyntax
     /**
      * Returns the enumeration value table for class {@code ColorSupported}.
      */
+    @Override
     protected EnumSyntax[] getEnumValueTable() {
         return myEnumValueTable;
     }
@@ -125,6 +127,7 @@ public final class ColorSupported extends EnumSyntax
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return ColorSupported.class;
     }
@@ -138,6 +141,7 @@ public final class ColorSupported extends EnumSyntax
      *
      * @return attribute category name
      */
+    @Override
     public final String getName() {
         return "color-supported";
     }
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/Compression.java b/src/java.desktop/share/classes/javax/print/attribute/standard/Compression.java
index b1e7f1e89fc..9eeab5d9688 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/Compression.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/Compression.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -106,6 +106,7 @@ public class Compression extends EnumSyntax implements DocAttribute {
     /**
      * Returns the string table for class {@code Compression}.
      */
+    @Override
     protected String[] getStringTable() {
         return myStringTable.clone();
     }
@@ -113,6 +114,7 @@ public class Compression extends EnumSyntax implements DocAttribute {
     /**
      * Returns the enumeration value table for class {@code Compression}.
      */
+    @Override
     protected EnumSyntax[] getEnumValueTable() {
         return (EnumSyntax[])myEnumValueTable.clone();
     }
@@ -127,6 +129,7 @@ public class Compression extends EnumSyntax implements DocAttribute {
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return Compression.class;
     }
@@ -140,6 +143,7 @@ public class Compression extends EnumSyntax implements DocAttribute {
      *
      * @return attribute category name
      */
+    @Override
     public final String getName() {
         return "compression";
     }
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/Copies.java b/src/java.desktop/share/classes/javax/print/attribute/standard/Copies.java
index 33a98c035be..6292cc4c8c2 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/Copies.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/Copies.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -97,6 +97,7 @@ public final class Copies extends IntegerSyntax
      * @return {@code true} if {@code object} is equivalent to this copies
      *         attribute, {@code false} otherwise
      */
+    @Override
     public boolean equals(Object object) {
         return super.equals (object) && object instanceof Copies;
     }
@@ -110,6 +111,7 @@ public final class Copies extends IntegerSyntax
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return Copies.class;
     }
@@ -122,6 +124,7 @@ public final class Copies extends IntegerSyntax
      *
      * @return attribute category name
      */
+    @Override
     public final String getName() {
         return "copies";
     }
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/CopiesSupported.java b/src/java.desktop/share/classes/javax/print/attribute/standard/CopiesSupported.java
index e7b411d8e55..3c2cf4bb550 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/CopiesSupported.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/CopiesSupported.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -105,6 +105,7 @@ public final class CopiesSupported extends SetOfIntegerSyntax
      * @return {@code true} if {@code object} is equivalent to this copies
      *         supported attribute, {@code false} otherwise
      */
+    @Override
     public boolean equals(Object object) {
         return super.equals (object) && object instanceof CopiesSupported;
     }
@@ -119,6 +120,7 @@ public final class CopiesSupported extends SetOfIntegerSyntax
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return CopiesSupported.class;
     }
@@ -132,6 +134,7 @@ public final class CopiesSupported extends SetOfIntegerSyntax
      *
      * @return attribute category name
      */
+    @Override
     public final String getName() {
         return "copies-supported";
     }
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/DateTimeAtCompleted.java b/src/java.desktop/share/classes/javax/print/attribute/standard/DateTimeAtCompleted.java
index 4e0a3b27259..a7a31dacd8d 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/DateTimeAtCompleted.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/DateTimeAtCompleted.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -88,6 +88,7 @@ public final class DateTimeAtCompleted extends DateTimeSyntax
      * @return {@code true} if {@code object} is equivalent to this date-time at
      *         completed attribute, {@code false} otherwise
      */
+    @Override
     public boolean equals(Object object) {
         return(super.equals (object) &&
                object instanceof DateTimeAtCompleted);
@@ -105,6 +106,7 @@ public final class DateTimeAtCompleted extends DateTimeSyntax
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return DateTimeAtCompleted.class;
     }
@@ -118,6 +120,7 @@ public final class DateTimeAtCompleted extends DateTimeSyntax
      *
      * @return attribute category name
      */
+    @Override
     public final String getName() {
         return "date-time-at-completed";
     }
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/DateTimeAtCreation.java b/src/java.desktop/share/classes/javax/print/attribute/standard/DateTimeAtCreation.java
index fc09f0672c2..53b85b7cf5c 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/DateTimeAtCreation.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/DateTimeAtCreation.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -88,6 +88,7 @@ public final class DateTimeAtCreation   extends DateTimeSyntax
      * @return {@code true} if {@code object} is equivalent to this date-time at
      *         creation attribute, {@code false} otherwise
      */
+    @Override
     public boolean equals(Object object) {
         return(super.equals (object) &&
                object instanceof DateTimeAtCreation);
@@ -103,6 +104,7 @@ public final class DateTimeAtCreation   extends DateTimeSyntax
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return DateTimeAtCreation.class;
     }
@@ -116,6 +118,7 @@ public final class DateTimeAtCreation   extends DateTimeSyntax
      *
      * @return attribute category name
      */
+    @Override
     public final String getName() {
         return "date-time-at-creation";
     }
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/DateTimeAtProcessing.java b/src/java.desktop/share/classes/javax/print/attribute/standard/DateTimeAtProcessing.java
index 8b1f3efdc0f..310f3f756c7 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/DateTimeAtProcessing.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/DateTimeAtProcessing.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -89,6 +89,7 @@ public final class DateTimeAtProcessing extends DateTimeSyntax
      * @return {@code true} if {@code object} is equivalent to this date-time at
      *         processing attribute, {@code false} otherwise
      */
+    @Override
     public boolean equals(Object object) {
         return(super.equals (object) &&
                object instanceof DateTimeAtProcessing);
@@ -104,6 +105,7 @@ public final class DateTimeAtProcessing extends DateTimeSyntax
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return DateTimeAtProcessing.class;
     }
@@ -117,6 +119,7 @@ public final class DateTimeAtProcessing extends DateTimeSyntax
      *
      * @return attribute category name
      */
+    @Override
     public final String getName() {
         return "date-time-at-processing";
     }
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/Destination.java b/src/java.desktop/share/classes/javax/print/attribute/standard/Destination.java
index bc1d240c9c1..655a314b136 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/Destination.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/Destination.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -89,6 +89,7 @@ public final class Destination extends URISyntax
      * @return {@code true} if {@code object} is equivalent to this destination
      *         attribute, {@code false} otherwise
      */
+    @Override
     public boolean equals(Object object) {
         return (super.equals(object) &&
                 object instanceof Destination);
@@ -104,6 +105,7 @@ public final class Destination extends URISyntax
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return Destination.class;
     }
@@ -117,6 +119,7 @@ public final class Destination extends URISyntax
      *
      * @return attribute category name
      */
+    @Override
     public final String getName() {
         return "spool-data-destination";
     }
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/DialogOwner.java b/src/java.desktop/share/classes/javax/print/attribute/standard/DialogOwner.java
index 593e656cf6b..01a410d075b 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/DialogOwner.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/DialogOwner.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2018, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -50,6 +50,7 @@ public final class DialogOwner implements PrintRequestAttribute {
 
     private static class Accessor extends DialogOwnerAccessor {
 
+         @Override
          public long getOwnerID(DialogOwner owner) {
              return owner.getID();
          }
@@ -133,6 +134,7 @@ public final class DialogOwner implements PrintRequestAttribute {
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return DialogOwner.class;
     }
@@ -145,6 +147,7 @@ public final class DialogOwner implements PrintRequestAttribute {
      * {@code "dialog-owner"}.
      *
      */
+    @Override
     public final String getName() {
         return "dialog-owner";
 
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/DialogTypeSelection.java b/src/java.desktop/share/classes/javax/print/attribute/standard/DialogTypeSelection.java
index ae3195d0280..2cf003060b1 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/DialogTypeSelection.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/DialogTypeSelection.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -98,6 +98,7 @@ public final class DialogTypeSelection extends EnumSyntax
     /**
      * Returns the string table for class {@code DialogTypeSelection}.
      */
+    @Override
     protected String[] getStringTable() {
         return myStringTable;
     }
@@ -106,6 +107,7 @@ public final class DialogTypeSelection extends EnumSyntax
      * Returns the enumeration value table for class
      * {@code DialogTypeSelection}.
      */
+    @Override
     protected EnumSyntax[] getEnumValueTable() {
         return myEnumValueTable;
     }
@@ -120,6 +122,7 @@ public final class DialogTypeSelection extends EnumSyntax
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return DialogTypeSelection.class;
     }
@@ -133,6 +136,7 @@ public final class DialogTypeSelection extends EnumSyntax
      *
      * @return attribute category name
      */
+    @Override
     public final String getName() {
         return "dialog-type-selection";
     }
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/DocumentName.java b/src/java.desktop/share/classes/javax/print/attribute/standard/DocumentName.java
index eb2bd7a870d..bd1f574e4ba 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/DocumentName.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/DocumentName.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -86,6 +86,7 @@ public final class DocumentName extends TextSyntax implements DocAttribute {
      * @return {@code true} if {@code object} is equivalent to this document
      *         name attribute, {@code false} otherwise
      */
+    @Override
     public boolean equals(Object object) {
         return (super.equals (object) && object instanceof DocumentName);
     }
@@ -100,6 +101,7 @@ public final class DocumentName extends TextSyntax implements DocAttribute {
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return DocumentName.class;
     }
@@ -113,6 +115,7 @@ public final class DocumentName extends TextSyntax implements DocAttribute {
      *
      * @return attribute category name
      */
+    @Override
     public final String getName() {
         return "document-name";
     }
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/Fidelity.java b/src/java.desktop/share/classes/javax/print/attribute/standard/Fidelity.java
index b0e4b70c87c..8c8941c76c4 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/Fidelity.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/Fidelity.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -101,6 +101,7 @@ public final class Fidelity extends EnumSyntax
     /**
      * Returns the string table for class {@code Fidelity}.
      */
+    @Override
     protected String[] getStringTable() {
         return myStringTable;
     }
@@ -108,6 +109,7 @@ public final class Fidelity extends EnumSyntax
     /**
      * Returns the enumeration value table for class {@code Fidelity}.
      */
+    @Override
     protected EnumSyntax[] getEnumValueTable() {
         return myEnumValueTable;
     }
@@ -122,6 +124,7 @@ public final class Fidelity extends EnumSyntax
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return Fidelity.class;
     }
@@ -135,6 +138,7 @@ public final class Fidelity extends EnumSyntax
      *
      * @return attribute category name
      */
+    @Override
     public final String getName() {
         return "ipp-attribute-fidelity";
     }
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/Finishings.java b/src/java.desktop/share/classes/javax/print/attribute/standard/Finishings.java
index 46d520ecb48..7d9d042b3e7 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/Finishings.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/Finishings.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -344,6 +344,7 @@ public class Finishings extends EnumSyntax
     /**
      * Returns the string table for class {@code Finishings}.
      */
+    @Override
     protected String[] getStringTable() {
         return myStringTable.clone();
     }
@@ -351,6 +352,7 @@ public class Finishings extends EnumSyntax
     /**
      * Returns the enumeration value table for class {@code Finishings}.
      */
+    @Override
     protected EnumSyntax[] getEnumValueTable() {
         return (EnumSyntax[])myEnumValueTable.clone();
     }
@@ -358,6 +360,7 @@ public class Finishings extends EnumSyntax
     /**
      * Returns the lowest integer value used by class {@code Finishings}.
      */
+    @Override
     protected int getOffset() {
         return 3;
     }
@@ -372,6 +375,7 @@ public class Finishings extends EnumSyntax
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return Finishings.class;
     }
@@ -385,6 +389,7 @@ public class Finishings extends EnumSyntax
      *
      * @return attribute category name
      */
+    @Override
     public final String getName() {
         return "finishings";
     }
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/JobHoldUntil.java b/src/java.desktop/share/classes/javax/print/attribute/standard/JobHoldUntil.java
index d4e2c2625df..2b9ede6940f 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/JobHoldUntil.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/JobHoldUntil.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -123,6 +123,7 @@ public final class JobHoldUntil extends DateTimeSyntax
      * @return {@code true} if {@code object} is equivalent to this job hold
      *         until attribute, {@code false} otherwise
      */
+    @Override
     public boolean equals(Object object) {
         return (super.equals(object) && object instanceof JobHoldUntil);
     }
@@ -137,6 +138,7 @@ public final class JobHoldUntil extends DateTimeSyntax
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return JobHoldUntil.class;
     }
@@ -150,6 +152,7 @@ public final class JobHoldUntil extends DateTimeSyntax
      *
      * @return attribute category name
      */
+    @Override
     public final String getName() {
         return "job-hold-until";
     }
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/JobImpressions.java b/src/java.desktop/share/classes/javax/print/attribute/standard/JobImpressions.java
index ed9600838be..70d7c7e5e46 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/JobImpressions.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/JobImpressions.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -110,6 +110,7 @@ public final class JobImpressions extends IntegerSyntax
      * @return {@code true} if {@code object} is equivalent to this job
      *         impressions attribute, {@code false} otherwise
      */
+    @Override
     public boolean equals(Object object) {
         return super.equals (object) && object instanceof JobImpressions;
     }
@@ -124,6 +125,7 @@ public final class JobImpressions extends IntegerSyntax
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return JobImpressions.class;
     }
@@ -137,6 +139,7 @@ public final class JobImpressions extends IntegerSyntax
      *
      * @return attribute category name
      */
+    @Override
     public final String getName() {
         return "job-impressions";
     }
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/JobImpressionsCompleted.java b/src/java.desktop/share/classes/javax/print/attribute/standard/JobImpressionsCompleted.java
index 4974f9e13c9..e6fdeb93d05 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/JobImpressionsCompleted.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/JobImpressionsCompleted.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -94,6 +94,7 @@ public final class JobImpressionsCompleted extends IntegerSyntax
      * @return {@code true} if {@code object} is equivalent to this job
      *         impressions completed attribute, {@code false} otherwise
      */
+    @Override
     public boolean equals(Object object) {
         return(super.equals (object) &&
                object instanceof JobImpressionsCompleted);
@@ -109,6 +110,7 @@ public final class JobImpressionsCompleted extends IntegerSyntax
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return JobImpressionsCompleted.class;
     }
@@ -122,6 +124,7 @@ public final class JobImpressionsCompleted extends IntegerSyntax
      *
      * @return attribute category name
      */
+    @Override
     public final String getName() {
         return "job-impressions-completed";
     }
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/JobImpressionsSupported.java b/src/java.desktop/share/classes/javax/print/attribute/standard/JobImpressionsSupported.java
index 131b19f5ad2..82b3049b8bd 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/JobImpressionsSupported.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/JobImpressionsSupported.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -94,6 +94,7 @@ public final class JobImpressionsSupported extends SetOfIntegerSyntax
      * @return {@code true} if {@code object} is equivalent to this job
      *         impressions supported attribute, {@code false} otherwise
      */
+    @Override
     public boolean equals(Object object) {
         return (super.equals (object) &&
                 object instanceof JobImpressionsSupported);
@@ -109,6 +110,7 @@ public final class JobImpressionsSupported extends SetOfIntegerSyntax
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return JobImpressionsSupported.class;
     }
@@ -122,6 +124,7 @@ public final class JobImpressionsSupported extends SetOfIntegerSyntax
      *
      * @return attribute category name
      */
+    @Override
     public final String getName() {
         return "job-impressions-supported";
     }
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/JobKOctets.java b/src/java.desktop/share/classes/javax/print/attribute/standard/JobKOctets.java
index 454a30a3a28..acd04fab21d 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/JobKOctets.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/JobKOctets.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -159,6 +159,7 @@ public final class JobKOctets   extends IntegerSyntax
      * @return {@code true} if {@code object} is equivalent to this job K octets
      *         attribute, {@code false} otherwise
      */
+    @Override
     public boolean equals(Object object) {
         return super.equals(object) && object instanceof JobKOctets;
     }
@@ -173,6 +174,7 @@ public final class JobKOctets   extends IntegerSyntax
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return JobKOctets.class;
     }
@@ -186,6 +188,7 @@ public final class JobKOctets   extends IntegerSyntax
      *
      * @return attribute category name
      */
+    @Override
     public final String getName() {
         return "job-k-octets";
     }
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/JobKOctetsProcessed.java b/src/java.desktop/share/classes/javax/print/attribute/standard/JobKOctetsProcessed.java
index 9acc44f5777..efd9cac2441 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/JobKOctetsProcessed.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/JobKOctetsProcessed.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -104,6 +104,7 @@ public final class JobKOctetsProcessed extends IntegerSyntax
      * @return {@code true} if {@code object} is equivalent to this job K octets
      *         processed attribute, {@code false} otherwise
      */
+    @Override
     public boolean equals(Object object) {
         return(super.equals (object) &&
                object instanceof JobKOctetsProcessed);
@@ -119,6 +120,7 @@ public final class JobKOctetsProcessed extends IntegerSyntax
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return JobKOctetsProcessed.class;
     }
@@ -132,6 +134,7 @@ public final class JobKOctetsProcessed extends IntegerSyntax
      *
      * @return attribute category name
      */
+    @Override
     public final String getName() {
         return "job-k-octets-processed";
     }
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/JobKOctetsSupported.java b/src/java.desktop/share/classes/javax/print/attribute/standard/JobKOctetsSupported.java
index 032d172d6e2..221328caeb8 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/JobKOctetsSupported.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/JobKOctetsSupported.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -93,6 +93,7 @@ public final class JobKOctetsSupported extends SetOfIntegerSyntax
      * @return {@code true} if {@code object} is equivalent to this job K octets
      *         supported attribute, {@code false} otherwise
      */
+    @Override
     public boolean equals(Object object) {
         return (super.equals (object) &&
                 object instanceof JobKOctetsSupported);
@@ -108,6 +109,7 @@ public final class JobKOctetsSupported extends SetOfIntegerSyntax
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return JobKOctetsSupported.class;
     }
@@ -121,6 +123,7 @@ public final class JobKOctetsSupported extends SetOfIntegerSyntax
      *
      * @return attribute category name
      */
+    @Override
     public final String getName() {
         return "job-k-octets-supported";
     }
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/JobMediaSheets.java b/src/java.desktop/share/classes/javax/print/attribute/standard/JobMediaSheets.java
index a3720748f68..181bda79826 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/JobMediaSheets.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/JobMediaSheets.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -101,6 +101,7 @@ public class JobMediaSheets extends IntegerSyntax
      * @return {@code true} if {@code object} is equivalent to this job media
      *         sheets attribute, {@code false} otherwise
      */
+    @Override
     public boolean equals(Object object) {
         return super.equals(object) && object instanceof JobMediaSheets;
     }
@@ -115,6 +116,7 @@ public class JobMediaSheets extends IntegerSyntax
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return JobMediaSheets.class;
     }
@@ -128,6 +130,7 @@ public class JobMediaSheets extends IntegerSyntax
      *
      * @return attribute category name
      */
+    @Override
     public final String getName() {
         return "job-media-sheets";
     }
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/JobMediaSheetsCompleted.java b/src/java.desktop/share/classes/javax/print/attribute/standard/JobMediaSheetsCompleted.java
index e6f1eb9b4d8..fea87dc8ebd 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/JobMediaSheetsCompleted.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/JobMediaSheetsCompleted.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -94,6 +94,7 @@ public final class JobMediaSheetsCompleted extends IntegerSyntax
      * @return {@code true} if {@code object} is equivalent to this job media
      *         sheets completed attribute, {@code false} otherwise
      */
+    @Override
     public boolean equals(Object object) {
         return (super.equals (object) &&
                 object instanceof JobMediaSheetsCompleted);
@@ -109,6 +110,7 @@ public final class JobMediaSheetsCompleted extends IntegerSyntax
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return JobMediaSheetsCompleted.class;
     }
@@ -122,6 +124,7 @@ public final class JobMediaSheetsCompleted extends IntegerSyntax
      *
      * @return attribute category name
      */
+    @Override
     public final String getName() {
         return "job-media-sheets-completed";
     }
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/JobMediaSheetsSupported.java b/src/java.desktop/share/classes/javax/print/attribute/standard/JobMediaSheetsSupported.java
index a942f277175..8feeafef18a 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/JobMediaSheetsSupported.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/JobMediaSheetsSupported.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -94,6 +94,7 @@ public final class JobMediaSheetsSupported extends SetOfIntegerSyntax
      * @return {@code true} if {@code object} is equivalent to this job media
      *         sheets supported attribute, {@code false} otherwise
      */
+    @Override
     public boolean equals(Object object) {
         return (super.equals (object) &&
                 object instanceof JobMediaSheetsSupported);
@@ -109,6 +110,7 @@ public final class JobMediaSheetsSupported extends SetOfIntegerSyntax
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return JobMediaSheetsSupported.class;
     }
@@ -122,6 +124,7 @@ public final class JobMediaSheetsSupported extends SetOfIntegerSyntax
      *
      * @return attribute category name
      */
+    @Override
     public final String getName() {
         return "job-media-sheets-supported";
     }
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/JobMessageFromOperator.java b/src/java.desktop/share/classes/javax/print/attribute/standard/JobMessageFromOperator.java
index cd944103d23..796fe37774c 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/JobMessageFromOperator.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/JobMessageFromOperator.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -94,6 +94,7 @@ public final class JobMessageFromOperator extends TextSyntax
      * @return {@code true} if {@code object} is equivalent to this job message
      *         from operator attribute, {@code false} otherwise
      */
+    @Override
     public boolean equals(Object object) {
         return (super.equals (object) &&
                 object instanceof JobMessageFromOperator);
@@ -109,6 +110,7 @@ public final class JobMessageFromOperator extends TextSyntax
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return JobMessageFromOperator.class;
     }
@@ -122,6 +124,7 @@ public final class JobMessageFromOperator extends TextSyntax
      *
      * @return attribute category name
      */
+    @Override
     public final String getName() {
         return "job-message-from-operator";
     }
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/JobName.java b/src/java.desktop/share/classes/javax/print/attribute/standard/JobName.java
index cceabd8b8f0..4fa9eaee6fd 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/JobName.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/JobName.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -92,6 +92,7 @@ public final class JobName extends TextSyntax
      * @return {@code true} if {@code object} is equivalent to this job name
      *         attribute, {@code false} otherwise
      */
+    @Override
     public boolean equals(Object object) {
         return (super.equals(object) && object instanceof JobName);
     }
@@ -105,6 +106,7 @@ public final class JobName extends TextSyntax
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return JobName.class;
     }
@@ -117,6 +119,7 @@ public final class JobName extends TextSyntax
      *
      * @return attribute category name
      */
+    @Override
     public final String getName() {
         return "job-name";
     }
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/JobOriginatingUserName.java b/src/java.desktop/share/classes/javax/print/attribute/standard/JobOriginatingUserName.java
index d8dfd56a920..eda27d142f9 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/JobOriginatingUserName.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/JobOriginatingUserName.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -91,6 +91,7 @@ public final class JobOriginatingUserName extends TextSyntax
      * @return {@code true} if {@code object} is equivalent to this job
      *         originating user name attribute, {@code false} otherwise
      */
+    @Override
     public boolean equals(Object object) {
         return (super.equals (object) &&
                 object instanceof JobOriginatingUserName);
@@ -106,6 +107,7 @@ public final class JobOriginatingUserName extends TextSyntax
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return JobOriginatingUserName.class;
     }
@@ -119,6 +121,7 @@ public final class JobOriginatingUserName extends TextSyntax
      *
      * @return attribute category name
      */
+    @Override
     public final String getName() {
         return "job-originating-user-name";
     }
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/JobPriority.java b/src/java.desktop/share/classes/javax/print/attribute/standard/JobPriority.java
index 7c77a504673..5ca9990ec13 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/JobPriority.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/JobPriority.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -94,6 +94,7 @@ public final class JobPriority extends IntegerSyntax
      * @return {@code true} if {@code object} is equivalent to this job priority
      *         attribute, {@code false} otherwise
      */
+    @Override
     public boolean equals(Object object) {
         return (super.equals (object) && object instanceof JobPriority);
     }
@@ -108,6 +109,7 @@ public final class JobPriority extends IntegerSyntax
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return JobPriority.class;
     }
@@ -121,6 +123,7 @@ public final class JobPriority extends IntegerSyntax
      *
      * @return attribute category name
      */
+    @Override
     public final String getName() {
         return "job-priority";
     }
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/JobPrioritySupported.java b/src/java.desktop/share/classes/javax/print/attribute/standard/JobPrioritySupported.java
index 6df729a9813..422d823bff7 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/JobPrioritySupported.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/JobPrioritySupported.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -86,6 +86,7 @@ public final class JobPrioritySupported extends IntegerSyntax
      * @return {@code true} if {@code object} is equivalent to this job priority
      *         supported attribute, {@code false} otherwise
      */
+    @Override
     public boolean equals (Object object) {
 
         return (super.equals(object) &&
@@ -102,6 +103,7 @@ public final class JobPrioritySupported extends IntegerSyntax
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return JobPrioritySupported.class;
     }
@@ -115,6 +117,7 @@ public final class JobPrioritySupported extends IntegerSyntax
      *
      * @return attribute category name
      */
+    @Override
     public final String getName() {
         return "job-priority-supported";
     }
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/JobSheets.java b/src/java.desktop/share/classes/javax/print/attribute/standard/JobSheets.java
index 130b8eb27a3..59a31096d2a 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/JobSheets.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/JobSheets.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -101,6 +101,7 @@ public class JobSheets extends EnumSyntax
     /**
      * Returns the string table for class {@code JobSheets}.
      */
+    @Override
     protected String[] getStringTable() {
         return myStringTable.clone();
     }
@@ -108,6 +109,7 @@ public class JobSheets extends EnumSyntax
     /**
      * Returns the enumeration value table for class {@code JobSheets}.
      */
+    @Override
     protected EnumSyntax[] getEnumValueTable() {
         return (EnumSyntax[])myEnumValueTable.clone();
     }
@@ -122,6 +124,7 @@ public class JobSheets extends EnumSyntax
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return JobSheets.class;
     }
@@ -135,6 +138,7 @@ public class JobSheets extends EnumSyntax
      *
      * @return attribute category name
      */
+    @Override
     public final String getName() {
         return "job-sheets";
     }
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/JobState.java b/src/java.desktop/share/classes/javax/print/attribute/standard/JobState.java
index 13499a9b2a7..0b0ba9d3276 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/JobState.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/JobState.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -206,6 +206,7 @@ public class JobState extends EnumSyntax implements PrintJobAttribute {
     /**
      * Returns the string table for class {@code JobState}.
      */
+    @Override
     protected String[] getStringTable() {
         return myStringTable;
     }
@@ -213,6 +214,7 @@ public class JobState extends EnumSyntax implements PrintJobAttribute {
     /**
      * Returns the enumeration value table for class {@code JobState}.
      */
+    @Override
     protected EnumSyntax[] getEnumValueTable() {
         return myEnumValueTable;
     }
@@ -227,6 +229,7 @@ public class JobState extends EnumSyntax implements PrintJobAttribute {
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return JobState.class;
     }
@@ -240,6 +243,7 @@ public class JobState extends EnumSyntax implements PrintJobAttribute {
      *
      * @return attribute category name
      */
+    @Override
     public final String getName() {
         return "job-state";
     }
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/JobStateReason.java b/src/java.desktop/share/classes/javax/print/attribute/standard/JobStateReason.java
index 2f8526cb7b1..aba72ec9c1a 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/JobStateReason.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/JobStateReason.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2022, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -436,6 +436,7 @@ public class JobStateReason extends EnumSyntax implements Attribute {
     /**
      * Returns the string table for class {@code JobStateReason}.
      */
+    @Override
     protected String[] getStringTable() {
         return myStringTable.clone();
     }
@@ -443,6 +444,7 @@ public class JobStateReason extends EnumSyntax implements Attribute {
     /**
      * Returns the enumeration value table for class {@code JobStateReason}.
      */
+    @Override
     protected EnumSyntax[] getEnumValueTable() {
         return (EnumSyntax[])myEnumValueTable.clone();
     }
@@ -457,6 +459,7 @@ public class JobStateReason extends EnumSyntax implements Attribute {
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return JobStateReason.class;
     }
@@ -470,6 +473,7 @@ public class JobStateReason extends EnumSyntax implements Attribute {
      *
      * @return attribute category name
      */
+    @Override
     public final String getName() {
         return "job-state-reason";
     }
diff --git a/src/java.desktop/share/classes/javax/print/attribute/standard/JobStateReasons.java b/src/java.desktop/share/classes/javax/print/attribute/standard/JobStateReasons.java
index 22b438c02eb..4e3e66d0ea8 100644
--- a/src/java.desktop/share/classes/javax/print/attribute/standard/JobStateReasons.java
+++ b/src/java.desktop/share/classes/javax/print/attribute/standard/JobStateReasons.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -140,6 +140,7 @@ public final class JobStateReasons
      *         class {@link JobStateReason JobStateReason}
      * @since 1.5
      */
+    @Override
     public boolean add(JobStateReason o) {
         if (o == null) {
             throw new NullPointerException();
@@ -157,6 +158,7 @@ public final class JobStateReasons
      * @return printing attribute class (category), an instance of class
      *         {@link Class java.lang.Class}
      */
+    @Override
     public final Class<? extends Attribute> getCategory() {
         return JobStateReasons.class;
     }
@@ -170,6 +172,7 @@ public final class JobStateReasons
      *
      * @return attribute category name
      */
+    @Override
     public final String getName() {
         return "job-state-reasons";
     }
diff --git a/src/java.desktop/share/classes/javax/swing/DebugGraphics.java b/src/java.desktop/share/classes/javax/swing/DebugGraphics.java
index 83b44716c04..512b56ee28a 100644
--- a/src/java.desktop/share/classes/javax/swing/DebugGraphics.java
+++ b/src/java.desktop/share/classes/javax/swing/DebugGraphics.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -1492,14 +1492,12 @@ public class DebugGraphics extends Graphics {
     /** Returns DebugGraphicsInfo, or creates one if none exists.
       */
     static DebugGraphicsInfo info() {
-        DebugGraphicsInfo debugGraphicsInfo = (DebugGraphicsInfo)
-            SwingUtilities.appContextGet(debugGraphicsInfoKey);
-        if (debugGraphicsInfo == null) {
-            debugGraphicsInfo = new DebugGraphicsInfo();
-            SwingUtilities.appContextPut(debugGraphicsInfoKey,
-                                         debugGraphicsInfo);
+        synchronized (DebugGraphicsInfo.class) {
+            if (debugGraphicsInfo == null) {
+                debugGraphicsInfo = new DebugGraphicsInfo();
+            }
+            return debugGraphicsInfo;
         }
-        return debugGraphicsInfo;
     }
-    private static final Class<DebugGraphicsInfo> debugGraphicsInfoKey = DebugGraphicsInfo.class;
+    private static DebugGraphicsInfo debugGraphicsInfo;
 }
diff --git a/src/java.desktop/share/classes/javax/swing/JComponent.java b/src/java.desktop/share/classes/javax/swing/JComponent.java
index f515115bade..6351522ab49 100644
--- a/src/java.desktop/share/classes/javax/swing/JComponent.java
+++ b/src/java.desktop/share/classes/javax/swing/JComponent.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -4885,8 +4885,7 @@ public abstract class JComponent extends Container implements Serializable,
      * @see RepaintManager#addDirtyRegion
      */
     public void repaint(long tm, int x, int y, int width, int height) {
-        RepaintManager.currentManager(SunToolkit.targetToAppContext(this))
-                      .addDirtyRegion(this, x, y, width, height);
+        RepaintManager.currentManager(this).addDirtyRegion(this, x, y, width, height);
     }
 
 
diff --git a/src/java.desktop/share/classes/javax/swing/JDialog.java b/src/java.desktop/share/classes/javax/swing/JDialog.java
index 99d6385cd7c..a7d8791c72c 100644
--- a/src/java.desktop/share/classes/javax/swing/JDialog.java
+++ b/src/java.desktop/share/classes/javax/swing/JDialog.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -101,13 +101,6 @@ public class JDialog extends Dialog implements WindowConstants,
                                                RootPaneContainer,
                                TransferHandler.HasGetTransferHandler
 {
-    /**
-     * Key into the AppContext, used to check if should provide decorations
-     * by default.
-     */
-    private static final Object defaultLookAndFeelDecoratedKey =
-            new StringBuffer("JDialog.defaultLookAndFeelDecorated");
-
     private int defaultCloseOperation = HIDE_ON_CLOSE;
 
     /**
@@ -1119,6 +1112,8 @@ public class JDialog extends Dialog implements WindowConstants,
         }
     }
 
+    private static boolean defaultLAFDecorated;
+
     /**
      * Provides a hint as to whether or not newly created {@code JDialog}s
      * should have their Window decorations (such as borders, widgets to
@@ -1144,11 +1139,7 @@ public class JDialog extends Dialog implements WindowConstants,
      * @since 1.4
      */
     public static void setDefaultLookAndFeelDecorated(boolean defaultLookAndFeelDecorated) {
-        if (defaultLookAndFeelDecorated) {
-            SwingUtilities.appContextPut(defaultLookAndFeelDecoratedKey, Boolean.TRUE);
-        } else {
-            SwingUtilities.appContextPut(defaultLookAndFeelDecoratedKey, Boolean.FALSE);
-        }
+        defaultLAFDecorated = defaultLookAndFeelDecorated;
     }
 
     /**
@@ -1160,12 +1151,7 @@ public class JDialog extends Dialog implements WindowConstants,
      * @since 1.4
      */
     public static boolean isDefaultLookAndFeelDecorated() {
-        Boolean defaultLookAndFeelDecorated =
-            (Boolean) SwingUtilities.appContextGet(defaultLookAndFeelDecoratedKey);
-        if (defaultLookAndFeelDecorated == null) {
-            defaultLookAndFeelDecorated = Boolean.FALSE;
-        }
-        return defaultLookAndFeelDecorated.booleanValue();
+        return defaultLAFDecorated;
     }
 
     /**
diff --git a/src/java.desktop/share/classes/javax/swing/JEditorPane.java b/src/java.desktop/share/classes/javax/swing/JEditorPane.java
index 2f8f0f30722..3134b8bace2 100644
--- a/src/java.desktop/share/classes/javax/swing/JEditorPane.java
+++ b/src/java.desktop/share/classes/javax/swing/JEditorPane.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -1227,12 +1227,11 @@ public class JEditorPane extends JTextComponent {
      */
     @SuppressWarnings("deprecation")
     public static EditorKit createEditorKitForContentType(String type) {
-        Hashtable<String, EditorKit> kitRegistry = getKitRegistry();
         EditorKit k = kitRegistry.get(type);
         if (k == null) {
             // try to dynamically load the support
-            String classname = getKitTypeRegistry().get(type);
-            ClassLoader loader = getKitLoaderRegistry().get(type);
+            String classname = kitTypeRegistry.get(type);
+            ClassLoader loader = kitLoaderRegistry.get(type);
             try {
                 Class<?> c;
                 if (loader != null) {
@@ -1287,13 +1286,13 @@ public class JEditorPane extends JTextComponent {
      * @param loader the <code>ClassLoader</code> to use to load the name
      */
     public static void registerEditorKitForContentType(String type, String classname, ClassLoader loader) {
-        getKitTypeRegistry().put(type, classname);
+        kitTypeRegistry.put(type, classname);
         if (loader != null) {
-            getKitLoaderRegistry().put(type, loader);
+            kitLoaderRegistry.put(type, loader);
         } else {
-            getKitLoaderRegistry().remove(type);
+            kitLoaderRegistry.remove(type);
         }
-        getKitRegistry().remove(type);
+        kitRegistry.remove(type);
     }
 
     /**
@@ -1306,63 +1305,27 @@ public class JEditorPane extends JTextComponent {
      * @since 1.3
      */
     public static String getEditorKitClassNameForContentType(String type) {
-        return getKitTypeRegistry().get(type);
+        return kitTypeRegistry.get(type);
     }
 
-    private static Hashtable<String, String> getKitTypeRegistry() {
-        loadDefaultKitsIfNecessary();
-        @SuppressWarnings("unchecked")
-        Hashtable<String, String> tmp =
-            (Hashtable)SwingUtilities.appContextGet(kitTypeRegistryKey);
-        return tmp;
-    }
+    private static final Hashtable<String, String> kitTypeRegistry = new Hashtable<>();
+    private static final Hashtable<String, ClassLoader> kitLoaderRegistry = new Hashtable<>();
 
-    private static Hashtable<String, ClassLoader> getKitLoaderRegistry() {
-        loadDefaultKitsIfNecessary();
-        @SuppressWarnings("unchecked")
-        Hashtable<String,  ClassLoader> tmp =
-            (Hashtable)SwingUtilities.appContextGet(kitLoaderRegistryKey);
-        return tmp;
-    }
+    private static final Hashtable<String, EditorKit> kitRegistry = new Hashtable<>(3);
 
-    private static Hashtable<String, EditorKit> getKitRegistry() {
-        @SuppressWarnings("unchecked")
-        Hashtable<String, EditorKit> ht =
-            (Hashtable)SwingUtilities.appContextGet(kitRegistryKey);
-        if (ht == null) {
-            ht = new Hashtable<>(3);
-            SwingUtilities.appContextPut(kitRegistryKey, ht);
-        }
-        return ht;
-    }
-
-    /**
-     * This is invoked every time the registries are accessed. Loading
-     * is done this way instead of via a static as the static is only
-     * called once when running in an AppContext.
-     */
-    private static void loadDefaultKitsIfNecessary() {
-        if (SwingUtilities.appContextGet(kitTypeRegistryKey) == null) {
-            synchronized(defaultEditorKitMap) {
-                if (defaultEditorKitMap.size() == 0) {
-                    defaultEditorKitMap.put("text/plain",
-                                            "javax.swing.JEditorPane$PlainEditorKit");
-                    defaultEditorKitMap.put("text/html",
-                                            "javax.swing.text.html.HTMLEditorKit");
-                    defaultEditorKitMap.put("text/rtf",
-                                            "javax.swing.text.rtf.RTFEditorKit");
-                    defaultEditorKitMap.put("application/rtf",
-                                            "javax.swing.text.rtf.RTFEditorKit");
-                }
-            }
-            Hashtable<Object, Object> ht = new Hashtable<>();
-            SwingUtilities.appContextPut(kitTypeRegistryKey, ht);
-            ht = new Hashtable<>();
-            SwingUtilities.appContextPut(kitLoaderRegistryKey, ht);
-            for (String key : defaultEditorKitMap.keySet()) {
-                registerEditorKitForContentType(key,defaultEditorKitMap.get(key));
-            }
+    static final Map<String, String> defaultEditorKitMap = new HashMap<String, String>(0);
 
+    static {
+        defaultEditorKitMap.put("text/plain",
+                                "javax.swing.JEditorPane$PlainEditorKit");
+        defaultEditorKitMap.put("text/html",
+                                "javax.swing.text.html.HTMLEditorKit");
+        defaultEditorKitMap.put("text/rtf",
+                                "javax.swing.text.rtf.RTFEditorKit");
+        defaultEditorKitMap.put("application/rtf",
+                                "javax.swing.text.rtf.RTFEditorKit");
+        for (String key : defaultEditorKitMap.keySet()) {
+            registerEditorKitForContentType(key,defaultEditorKitMap.get(key));
         }
     }
 
@@ -1587,16 +1550,6 @@ public class JEditorPane extends JTextComponent {
      */
     private Hashtable<String, EditorKit> typeHandlers;
 
-    /*
-     * Private AppContext keys for this class's static variables.
-     */
-    private static final Object kitRegistryKey =
-        new StringBuffer("JEditorPane.kitRegistry");
-    private static final Object kitTypeRegistryKey =
-        new StringBuffer("JEditorPane.kitTypeRegistry");
-    private static final Object kitLoaderRegistryKey =
-        new StringBuffer("JEditorPane.kitLoaderRegistry");
-
     /**
      * @see #getUIClassID
      * @see #readObject
@@ -1633,8 +1586,6 @@ public class JEditorPane extends JTextComponent {
      */
     public static final String HONOR_DISPLAY_PROPERTIES = "JEditorPane.honorDisplayProperties";
 
-    static final Map<String, String> defaultEditorKitMap = new HashMap<String, String>(0);
-
     /**
      * Returns a string representation of this <code>JEditorPane</code>.
      * This method
diff --git a/src/java.desktop/share/classes/javax/swing/JFrame.java b/src/java.desktop/share/classes/javax/swing/JFrame.java
index 8bde7e18f03..bab215625b9 100644
--- a/src/java.desktop/share/classes/javax/swing/JFrame.java
+++ b/src/java.desktop/share/classes/javax/swing/JFrame.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -126,13 +126,6 @@ public class JFrame  extends Frame implements WindowConstants,
                                               RootPaneContainer,
                               TransferHandler.HasGetTransferHandler
 {
-    /**
-     * Key into the AppContext, used to check if should provide decorations
-     * by default.
-     */
-    private static final Object defaultLookAndFeelDecoratedKey =
-            new StringBuffer("JFrame.defaultLookAndFeelDecorated");
-
     private int defaultCloseOperation = HIDE_ON_CLOSE;
 
     /**
@@ -755,6 +748,8 @@ public class JFrame  extends Frame implements WindowConstants,
         }
     }
 
+    private static boolean defaultLAFDecorated;
+
     /**
      * Provides a hint as to whether or not newly created <code>JFrame</code>s
      * should have their Window decorations (such as borders, widgets to
@@ -780,11 +775,7 @@ public class JFrame  extends Frame implements WindowConstants,
      * @since 1.4
      */
     public static void setDefaultLookAndFeelDecorated(boolean defaultLookAndFeelDecorated) {
-        if (defaultLookAndFeelDecorated) {
-            SwingUtilities.appContextPut(defaultLookAndFeelDecoratedKey, Boolean.TRUE);
-        } else {
-            SwingUtilities.appContextPut(defaultLookAndFeelDecoratedKey, Boolean.FALSE);
-        }
+        defaultLAFDecorated = defaultLookAndFeelDecorated;
     }
 
 
@@ -797,12 +788,7 @@ public class JFrame  extends Frame implements WindowConstants,
      * @since 1.4
      */
     public static boolean isDefaultLookAndFeelDecorated() {
-        Boolean defaultLookAndFeelDecorated =
-            (Boolean) SwingUtilities.appContextGet(defaultLookAndFeelDecoratedKey);
-        if (defaultLookAndFeelDecorated == null) {
-            defaultLookAndFeelDecorated = Boolean.FALSE;
-        }
-        return defaultLookAndFeelDecorated.booleanValue();
+        return defaultLAFDecorated;
     }
 
     /**
diff --git a/src/java.desktop/share/classes/javax/swing/JPopupMenu.java b/src/java.desktop/share/classes/javax/swing/JPopupMenu.java
index 1b04e8c6169..2ecc7cf3b1e 100644
--- a/src/java.desktop/share/classes/javax/swing/JPopupMenu.java
+++ b/src/java.desktop/share/classes/javax/swing/JPopupMenu.java
@@ -112,12 +112,6 @@ public class JPopupMenu extends JComponent implements Accessible,MenuElement {
      */
     private static final String uiClassID = "PopupMenuUI";
 
-    /**
-     * Key used in AppContext to determine if light way popups are the default.
-     */
-    private static final Object defaultLWPopupEnabledKey =
-        new StringBuffer("JPopupMenu.defaultLWPopupEnabledKey");
-
     /** Bug#4425878-Property javax.swing.adjustPopupLocationToFit introduced */
     static boolean popupPositionFixDisabled =
          System.getProperty("javax.swing.adjustPopupLocationToFit","").equals("false");
@@ -153,6 +147,8 @@ public class JPopupMenu extends JComponent implements Accessible,MenuElement {
     private static final boolean VERBOSE = false; // show reuse hits/misses
     private static final boolean DEBUG =   false;  // show bad params, misc.
 
+    private static boolean defaultLWPopupEnabled = true;
+
     /**
      *  Sets the default value of the <code>lightWeightPopupEnabled</code>
      *  property.
@@ -163,8 +159,7 @@ public class JPopupMenu extends JComponent implements Accessible,MenuElement {
      *  @see #setLightWeightPopupEnabled
      */
     public static void setDefaultLightWeightPopupEnabled(boolean aFlag) {
-        SwingUtilities.appContextPut(defaultLWPopupEnabledKey,
-                                     Boolean.valueOf(aFlag));
+        defaultLWPopupEnabled = aFlag;
     }
 
     /**
@@ -177,14 +172,7 @@ public class JPopupMenu extends JComponent implements Accessible,MenuElement {
      *  @see #setDefaultLightWeightPopupEnabled
      */
     public static boolean getDefaultLightWeightPopupEnabled() {
-        Boolean b = (Boolean)
-            SwingUtilities.appContextGet(defaultLWPopupEnabledKey);
-        if (b == null) {
-            SwingUtilities.appContextPut(defaultLWPopupEnabledKey,
-                                         Boolean.TRUE);
-            return true;
-        }
-        return b.booleanValue();
+        return defaultLWPopupEnabled;
     }
 
     /**
diff --git a/src/java.desktop/share/classes/javax/swing/PopupFactory.java b/src/java.desktop/share/classes/javax/swing/PopupFactory.java
index 2b274c816b1..208177fc55e 100644
--- a/src/java.desktop/share/classes/javax/swing/PopupFactory.java
+++ b/src/java.desktop/share/classes/javax/swing/PopupFactory.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -80,13 +80,6 @@ public class PopupFactory {
             }
         });
     }
-    /**
-     * The shared instanceof <code>PopupFactory</code> is per
-     * <code>AppContext</code>. This is the key used in the
-     * <code>AppContext</code> to locate the <code>PopupFactory</code>.
-     */
-    private static final Object SharedInstanceKey =
-        new StringBuffer("PopupFactory.SharedInstanceKey");
 
     /**
      * Max number of items to store in any one particular cache.
@@ -118,6 +111,7 @@ public class PopupFactory {
      */
     public PopupFactory() {}
 
+    static PopupFactory sharedFactory;
     /**
      * Sets the <code>PopupFactory</code> that will be used to obtain
      * <code>Popup</code>s.
@@ -132,7 +126,9 @@ public class PopupFactory {
         if (factory == null) {
             throw new IllegalArgumentException("PopupFactory can not be null");
         }
-        SwingUtilities.appContextPut(SharedInstanceKey, factory);
+        synchronized (PopupFactory.class) {
+            sharedFactory = factory;
+        }
     }
 
     /**
@@ -142,14 +138,12 @@ public class PopupFactory {
      * @return Shared PopupFactory
      */
     public static PopupFactory getSharedInstance() {
-        PopupFactory factory = (PopupFactory)SwingUtilities.appContextGet(
-                         SharedInstanceKey);
-
-        if (factory == null) {
-            factory = new PopupFactory();
-            setSharedInstance(factory);
+        synchronized (PopupFactory.class) {
+            if (sharedFactory == null) {
+                sharedFactory = new PopupFactory();
+            }
+            return sharedFactory;
         }
-        return factory;
     }
 
 
@@ -351,8 +345,6 @@ public class PopupFactory {
      * Popup implementation that uses a Window as the popup.
      */
     private static class HeavyWeightPopup extends Popup {
-        private static final Object heavyWeightPopupCacheKey =
-                 new StringBuffer("PopupFactory.heavyWeightPopupCache");
 
         private volatile boolean isCacheEnabled = true;
 
@@ -434,21 +426,16 @@ public class PopupFactory {
             }
         }
 
+        private static Map<Window, List<HeavyWeightPopup>> cache;
         /**
          * Returns the cache to use for heavy weight popups. Maps from
          * <code>Window</code> to a <code>List</code> of
          * <code>HeavyWeightPopup</code>s.
          */
-        @SuppressWarnings("unchecked")
         private static Map<Window, List<HeavyWeightPopup>> getHeavyWeightPopupCache() {
             synchronized (HeavyWeightPopup.class) {
-                Map<Window, List<HeavyWeightPopup>> cache = (Map<Window, List<HeavyWeightPopup>>)SwingUtilities.appContextGet(
-                                  heavyWeightPopupCacheKey);
-
                 if (cache == null) {
                     cache = new HashMap<>(2);
-                    SwingUtilities.appContextPut(heavyWeightPopupCacheKey,
-                                                 cache);
                 }
                 return cache;
             }
@@ -728,18 +715,17 @@ public class PopupFactory {
             return popup;
         }
 
+        private static List<LightWeightPopup> cache;
         /**
          * Returns the cache to use for heavy weight popups.
          */
-        @SuppressWarnings("unchecked")
         private static List<LightWeightPopup> getLightWeightPopupCache() {
-            List<LightWeightPopup> cache = (List<LightWeightPopup>)SwingUtilities.appContextGet(
-                                   lightWeightPopupCacheKey);
-            if (cache == null) {
-                cache = new ArrayList<>();
-                SwingUtilities.appContextPut(lightWeightPopupCacheKey, cache);
+            synchronized (LightWeightPopup.class) {
+                if (cache == null) {
+                    cache = new ArrayList<>();
+                }
+                return cache;
             }
-            return cache;
         }
 
         /**
@@ -849,8 +835,6 @@ public class PopupFactory {
      * Popup implementation that uses a Panel as the popup.
      */
     private static class MediumWeightPopup extends ContainerPopup {
-        private static final Object mediumWeightPopupCacheKey =
-                             new StringBuffer("PopupFactory.mediumPopupCache");
 
         /** Child of the panel. The contents are added to this. */
         private JRootPane rootPane;
@@ -877,19 +861,18 @@ public class PopupFactory {
             return popup;
         }
 
+        private static List<MediumWeightPopup> cache;
         /**
          * Returns the cache to use for medium weight popups.
          */
         @SuppressWarnings("unchecked")
         private static List<MediumWeightPopup> getMediumWeightPopupCache() {
-            List<MediumWeightPopup> cache = (List<MediumWeightPopup>)SwingUtilities.appContextGet(
-                                    mediumWeightPopupCacheKey);
-
-            if (cache == null) {
-                cache = new ArrayList<>();
-                SwingUtilities.appContextPut(mediumWeightPopupCacheKey, cache);
+            synchronized (MediumWeightPopup.class) {
+                if (cache == null) {
+                    cache = new ArrayList<>();
+                }
+                return cache;
             }
-            return cache;
         }
 
         /**
diff --git a/src/java.desktop/share/classes/javax/swing/RepaintManager.java b/src/java.desktop/share/classes/javax/swing/RepaintManager.java
index dcc755cb4bc..db8b13afa22 100644
--- a/src/java.desktop/share/classes/javax/swing/RepaintManager.java
+++ b/src/java.desktop/share/classes/javax/swing/RepaintManager.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -119,8 +119,6 @@ public class RepaintManager
      */
     private PaintManager paintManager;
 
-    private static final Object repaintManagerKey = RepaintManager.class;
-
     // Whether or not a VolatileImage should be used for double-buffered painting
     static boolean volatileImageBufferEnabled = true;
     /**
@@ -236,8 +234,10 @@ public class RepaintManager
         }
     }
 
+    private static RepaintManager repaintManager;
+
     /**
-     * Return the RepaintManager for the calling thread given a Component.
+     * Return the RepaintManager given a Component.
      *
      * @param c a Component -- unused in the default implementation, but could
      *          be used by an overridden version to return a different RepaintManager
@@ -249,21 +249,15 @@ public class RepaintManager
         // component is ever used to determine the current
         // RepaintManager, DisplayChangedRunnable will need to be modified
         // accordingly.
-        return currentManager(AppContext.getAppContext());
-    }
 
-    /**
-     * Returns the RepaintManager for the specified AppContext.  If
-     * a RepaintManager has not been created for the specified
-     * AppContext this will return null.
-     */
-    static RepaintManager currentManager(AppContext appContext) {
-        RepaintManager rm = (RepaintManager)appContext.get(repaintManagerKey);
-        if (rm == null) {
-            rm = new RepaintManager(BUFFER_STRATEGY_TYPE);
-            appContext.put(repaintManagerKey, rm);
+        synchronized (RepaintManager.class) {
+            RepaintManager rm = repaintManager;
+            if (rm == null) {
+                rm = new RepaintManager(BUFFER_STRATEGY_TYPE);
+                repaintManager = rm;
+            }
+            return rm;
         }
-        return rm;
     }
 
     /**
@@ -282,16 +276,12 @@ public class RepaintManager
 
 
     /**
-     * Set the RepaintManager that should be used for the calling
-     * thread. <b>aRepaintManager</b> will become the current RepaintManager
-     * for the calling thread's thread group.
+     * Set the RepaintManager.
      * @param aRepaintManager  the RepaintManager object to use
      */
     public static void setCurrentManager(RepaintManager aRepaintManager) {
-        if (aRepaintManager != null) {
-            SwingUtilities.appContextPut(repaintManagerKey, aRepaintManager);
-        } else {
-            SwingUtilities.appContextRemove(repaintManagerKey);
+        synchronized (RepaintManager.class) {
+            repaintManager = aRepaintManager;
         }
     }
 
@@ -373,7 +363,7 @@ public class RepaintManager
 
         // Queue a Runnable to invoke paintDirtyRegions and
         // validateInvalidComponents.
-        scheduleProcessingRunnable(SunToolkit.targetToAppContext(invalidComponent));
+        scheduleProcessingRunnable();
     }
 
 
@@ -460,7 +450,7 @@ public class RepaintManager
 
         // Queue a Runnable to invoke paintDirtyRegions and
         // validateInvalidComponents.
-        scheduleProcessingRunnable(SunToolkit.targetToAppContext(c));
+        scheduleProcessingRunnable();
     }
 
     /**
@@ -530,8 +520,7 @@ public class RepaintManager
     // This is called from the toolkit thread when a native expose is
     // received.
     //
-    void nativeAddDirtyRegion(AppContext appContext, Container c,
-                              int x, int y, int w, int h) {
+    void nativeAddDirtyRegion(Container c, int x, int y, int w, int h) {
         if (w > 0 && h > 0) {
             synchronized(this) {
                 Rectangle dirty = hwDirtyComponents.get(c);
@@ -543,7 +532,7 @@ public class RepaintManager
                                               x, y, w, h, dirty));
                 }
             }
-            scheduleProcessingRunnable(appContext);
+            scheduleProcessingRunnable();
         }
     }
 
@@ -551,8 +540,7 @@ public class RepaintManager
     // This is called from the toolkit thread when awt needs to run a
     // Runnable before we paint.
     //
-    void nativeQueueSurfaceDataRunnable(AppContext appContext,
-                                        final Component c, final Runnable r)
+    void nativeQueueSurfaceDataRunnable(final Component c, final Runnable r)
     {
         synchronized(this) {
             if (runnableList == null) {
@@ -560,7 +548,7 @@ public class RepaintManager
             }
             runnableList.add(r);
         }
-        scheduleProcessingRunnable(appContext);
+        scheduleProcessingRunnable();
     }
 
     /**
@@ -1411,11 +1399,11 @@ public class RepaintManager
         return paintManager;
     }
 
-    private void scheduleProcessingRunnable(AppContext context) {
+    private void scheduleProcessingRunnable() {
         if (processingRunnable.markPending()) {
             Toolkit tk = Toolkit.getDefaultToolkit();
             if (tk instanceof SunToolkit) {
-                SunToolkit.getSystemEventQueueImplPP(context).
+                SunToolkit.getSystemEventQueueImplPP().
                   postEvent(new InvocationEvent(Toolkit.getDefaultToolkit(),
                                                 processingRunnable));
             } else {
@@ -1733,8 +1721,7 @@ public class RepaintManager
     /**
      * Listener installed to detect display changes. When display changes,
      * schedules a callback to notify all RepaintManagers of the display
-     * changes. Only one DisplayChangedHandler is ever installed. The
-     * singleton instance will schedule notification for all AppContexts.
+     * changes. Only one DisplayChangedHandler is ever installed.
      */
     private static final class DisplayChangedHandler implements
                                              DisplayChangedListener {
diff --git a/src/java.desktop/share/classes/javax/swing/SwingPaintEventDispatcher.java b/src/java.desktop/share/classes/javax/swing/SwingPaintEventDispatcher.java
index 4a7b0821a3d..8c904f7d00c 100644
--- a/src/java.desktop/share/classes/javax/swing/SwingPaintEventDispatcher.java
+++ b/src/java.desktop/share/classes/javax/swing/SwingPaintEventDispatcher.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2005, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -28,7 +28,6 @@ import java.awt.Component;
 import java.awt.Container;
 import java.awt.Rectangle;
 import java.awt.event.PaintEvent;
-import sun.awt.AppContext;
 import sun.awt.SunToolkit;
 import sun.awt.event.IgnorePaintEvent;
 
@@ -52,12 +51,10 @@ class SwingPaintEventDispatcher extends sun.awt.PaintEventDispatcher {
     public PaintEvent createPaintEvent(Component component, int x, int y,
                                          int w, int h) {
         if (component instanceof RootPaneContainer) {
-            AppContext appContext = SunToolkit.targetToAppContext(component);
-            RepaintManager rm = RepaintManager.currentManager(appContext);
+            RepaintManager rm = RepaintManager.currentManager(component);
             if (!SHOW_FROM_DOUBLE_BUFFER ||
                   !rm.show((Container)component, x, y, w, h)) {
-                rm.nativeAddDirtyRegion(appContext, (Container)component,
-                                        x, y, w, h);
+                rm.nativeAddDirtyRegion((Container)component, x, y, w, h);
             }
             // For backward compatibility generate an empty paint
             // event.  Not doing this broke parts of Netbeans.
@@ -65,10 +62,8 @@ class SwingPaintEventDispatcher extends sun.awt.PaintEventDispatcher {
                                         new Rectangle(x, y, w, h));
         }
         else if (component instanceof SwingHeavyWeight) {
-            AppContext appContext = SunToolkit.targetToAppContext(component);
-            RepaintManager rm = RepaintManager.currentManager(appContext);
-            rm.nativeAddDirtyRegion(appContext, (Container)component,
-                                    x, y, w, h);
+            RepaintManager rm = RepaintManager.currentManager(component);
+            rm.nativeAddDirtyRegion((Container)component, x, y, w, h);
             return new IgnorePaintEvent(component, PaintEvent.PAINT,
                                         new Rectangle(x, y, w, h));
         }
@@ -81,9 +76,7 @@ class SwingPaintEventDispatcher extends sun.awt.PaintEventDispatcher {
 
     public boolean queueSurfaceDataReplacing(Component c, Runnable r) {
         if (c instanceof RootPaneContainer) {
-            AppContext appContext = SunToolkit.targetToAppContext(c);
-            RepaintManager.currentManager(appContext).
-                    nativeQueueSurfaceDataRunnable(appContext, c, r);
+            RepaintManager.currentManager(c).nativeQueueSurfaceDataRunnable(c, r);
             return true;
         }
         return super.queueSurfaceDataReplacing(c, r);
diff --git a/src/java.desktop/share/classes/javax/swing/SwingUtilities.java b/src/java.desktop/share/classes/javax/swing/SwingUtilities.java
index bc6441212de..afe1c444c31 100644
--- a/src/java.desktop/share/classes/javax/swing/SwingUtilities.java
+++ b/src/java.desktop/share/classes/javax/swing/SwingUtilities.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -1899,11 +1899,6 @@ public class SwingUtilities implements SwingConstants
         return null;
     }
 
-
-    // Don't use String, as it's not guaranteed to be unique in a Hashtable.
-    private static final Object sharedOwnerFrameKey =
-       new StringBuffer("SwingUtilities.sharedOwnerFrame");
-
     @SuppressWarnings("serial") // JDK-implementation class
     static class SharedOwnerFrame extends Frame implements WindowListener {
         public void addNotify() {
@@ -1961,6 +1956,7 @@ public class SwingUtilities implements SwingConstants
         }
     }
 
+    private static Frame sharedOwnerFrame;
     /**
      * Returns a toolkit-private, shared, invisible Frame
      * to be the owner for JDialogs and JWindows created with
@@ -1970,14 +1966,12 @@ public class SwingUtilities implements SwingConstants
      * @see java.awt.GraphicsEnvironment#isHeadless
      */
     static Frame getSharedOwnerFrame() throws HeadlessException {
-        Frame sharedOwnerFrame =
-            (Frame)SwingUtilities.appContextGet(sharedOwnerFrameKey);
-        if (sharedOwnerFrame == null) {
-            sharedOwnerFrame = new SharedOwnerFrame();
-            SwingUtilities.appContextPut(sharedOwnerFrameKey,
-                                         sharedOwnerFrame);
+        synchronized (SharedOwnerFrame.class) {
+            if (sharedOwnerFrame == null) {
+                sharedOwnerFrame = new SharedOwnerFrame();
+            }
+            return sharedOwnerFrame;
         }
-        return sharedOwnerFrame;
     }
 
     /**
diff --git a/src/java.desktop/share/classes/javax/swing/ToolTipManager.java b/src/java.desktop/share/classes/javax/swing/ToolTipManager.java
index a9e2c6e69bb..4c3d0209823 100644
--- a/src/java.desktop/share/classes/javax/swing/ToolTipManager.java
+++ b/src/java.desktop/share/classes/javax/swing/ToolTipManager.java
@@ -61,7 +61,6 @@ public final class ToolTipManager extends MouseAdapter implements MouseMotionLis
     JComponent insideComponent;
     MouseEvent mouseEvent;
     boolean showImmediately;
-    private static final Object TOOL_TIP_MANAGER_KEY = new Object();
     transient Popup tipWindow;
     /** The Window tip is being displayed in. This will be non-null if
      * the Window tip is in differs from that of insideComponent's Window.
@@ -394,19 +393,19 @@ public final class ToolTipManager extends MouseAdapter implements MouseMotionLis
         }
     }
 
+    private static ToolTipManager manager;
     /**
      * Returns a shared <code>ToolTipManager</code> instance.
      *
      * @return a shared <code>ToolTipManager</code> object
      */
     public static ToolTipManager sharedInstance() {
-        Object value = SwingUtilities.appContextGet(TOOL_TIP_MANAGER_KEY);
-        if (value instanceof ToolTipManager) {
-            return (ToolTipManager) value;
+        synchronized(ToolTipManager.class) {
+            if (manager == null) {
+                manager = new ToolTipManager();
+            }
+            return manager;
         }
-        ToolTipManager manager = new ToolTipManager();
-        SwingUtilities.appContextPut(TOOL_TIP_MANAGER_KEY, manager);
-        return manager;
     }
 
     // add keylistener here to trigger tip for access
diff --git a/src/java.desktop/share/classes/javax/swing/plaf/metal/MetalTitlePane.java b/src/java.desktop/share/classes/javax/swing/plaf/metal/MetalTitlePane.java
index ae8b379a579..4ed6734df1f 100644
--- a/src/java.desktop/share/classes/javax/swing/plaf/metal/MetalTitlePane.java
+++ b/src/java.desktop/share/classes/javax/swing/plaf/metal/MetalTitlePane.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -437,6 +437,7 @@ class MetalTitlePane extends JComponent {
      */
     private JMenu createMenu() {
         JMenu menu = new JMenu("");
+        menu.setPreferredSize(new Dimension(IMAGE_WIDTH, IMAGE_HEIGHT));
         if (getWindowDecorationStyle() == JRootPane.FRAME) {
             addMenuItems(menu);
         }
diff --git a/src/java.desktop/share/classes/sun/awt/SunToolkit.java b/src/java.desktop/share/classes/sun/awt/SunToolkit.java
index 10fb62e2fdc..e97b654486f 100644
--- a/src/java.desktop/share/classes/sun/awt/SunToolkit.java
+++ b/src/java.desktop/share/classes/sun/awt/SunToolkit.java
@@ -1034,8 +1034,7 @@ public abstract class SunToolkit extends Toolkit
         return getSystemEventQueueImplPP();
     }
 
-    // Package private implementation
-    static EventQueue getSystemEventQueueImplPP() {
+    public static EventQueue getSystemEventQueueImplPP() {
         return getSystemEventQueueImplPP(AppContext.getAppContext());
     }
 
diff --git a/src/java.desktop/share/classes/sun/font/GlyphLayout.java b/src/java.desktop/share/classes/sun/font/GlyphLayout.java
index df42cce344e..5bff127f143 100644
--- a/src/java.desktop/share/classes/sun/font/GlyphLayout.java
+++ b/src/java.desktop/share/classes/sun/font/GlyphLayout.java
@@ -76,7 +76,7 @@ import java.awt.geom.AffineTransform;
 import java.awt.geom.NoninvertibleTransformException;
 import java.awt.geom.Point2D;
 import java.util.ArrayList;
-import java.util.concurrent.ConcurrentHashMap;
+import java.util.WeakHashMap;
 
 import static java.lang.Character.*;
 
@@ -125,18 +125,12 @@ public final class GlyphLayout {
     }
 
     private static final class SDCache {
-        public Font key_font;
-        public FontRenderContext key_frc;
-
         public AffineTransform dtx;
         public AffineTransform gtx;
         public Point2D.Float delta;
         public FontStrikeDesc sd;
 
         private SDCache(Font font, FontRenderContext frc) {
-            key_font = font;
-            key_frc = frc;
-
             // !!! add getVectorTransform and hasVectorTransform to frc?  then
             // we could just skip this work...
 
@@ -177,7 +171,7 @@ public final class GlyphLayout {
         private static final Point2D.Float ZERO_DELTA = new Point2D.Float();
 
         private static
-            SoftReference<ConcurrentHashMap<SDKey, SDCache>> cacheRef;
+            SoftReference<WeakHashMap<SDKey, SDCache>> cacheRef;
 
         private static final class SDKey {
             private final Font font;
@@ -232,7 +226,7 @@ public final class GlyphLayout {
             }
 
             SDKey key = new SDKey(font, frc); // garbage, yuck...
-            ConcurrentHashMap<SDKey, SDCache> cache = null;
+            WeakHashMap<SDKey, SDCache> cache = null;
             SDCache res = null;
             if (cacheRef != null) {
                 cache = cacheRef.get();
@@ -243,13 +237,17 @@ public final class GlyphLayout {
             if (res == null) {
                 res = new SDCache(font, frc);
                 if (cache == null) {
-                    cache = new ConcurrentHashMap<SDKey, SDCache>(10);
+                    cache = new WeakHashMap<SDKey, SDCache>(10);
                     cacheRef = new
-                       SoftReference<ConcurrentHashMap<SDKey, SDCache>>(cache);
-                } else if (cache.size() >= 512) {
-                    cache.clear();
+                       SoftReference<WeakHashMap<SDKey, SDCache>>(cache);
+                } else if (cache.size() >= 128) {
+                    synchronized (SDCache.class) {
+                        cache.clear();
+                    }
+                }
+                synchronized (SDCache.class) {
+                    cache.put(key, res);
                 }
-                cache.put(key, res);
             }
             return res;
         }
diff --git a/src/java.desktop/share/classes/sun/print/RasterPrinterJob.java b/src/java.desktop/share/classes/sun/print/RasterPrinterJob.java
index 754af87b94e..32728efde6c 100644
--- a/src/java.desktop/share/classes/sun/print/RasterPrinterJob.java
+++ b/src/java.desktop/share/classes/sun/print/RasterPrinterJob.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -1610,6 +1610,11 @@ public abstract class RasterPrinterJob extends PrinterJob {
                 cancelDoc();
             }
 
+        } catch (PrinterException pe) {
+            throw pe;
+        } catch (Throwable printError) {
+            throw (PrinterException)
+                    new PrinterException().initCause(printError.getCause());
         } finally {
             // reset previousPaper in case this job is invoked again.
             previousPaper = null;
diff --git a/src/java.desktop/windows/classes/sun/awt/windows/WComponentPeer.java b/src/java.desktop/windows/classes/sun/awt/windows/WComponentPeer.java
index 1b3fb9a85e9..00ad60c8bb3 100644
--- a/src/java.desktop/windows/classes/sun/awt/windows/WComponentPeer.java
+++ b/src/java.desktop/windows/classes/sun/awt/windows/WComponentPeer.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1996, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1996, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -902,7 +902,7 @@ public abstract class WComponentPeer extends WObjectPeer
      */
     void postEvent(AWTEvent event) {
         preprocessPostEvent(event);
-        WToolkit.postEvent(WToolkit.targetToAppContext(target), event);
+        WToolkit.postEvent(event);
     }
 
     void preprocessPostEvent(AWTEvent event) {}
diff --git a/src/java.desktop/windows/classes/sun/awt/windows/WEmbeddedFrame.java b/src/java.desktop/windows/classes/sun/awt/windows/WEmbeddedFrame.java
index 9a74a1c25f7..0bd44d8ca85 100644
--- a/src/java.desktop/windows/classes/sun/awt/windows/WEmbeddedFrame.java
+++ b/src/java.desktop/windows/classes/sun/awt/windows/WEmbeddedFrame.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1996, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1996, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -238,8 +238,7 @@ public final class WEmbeddedFrame extends EmbeddedFrame {
                     peer.emulateActivation(true);
                 }
             };
-            WToolkit.postEvent(WToolkit.targetToAppContext(this),
-                               new InvocationEvent(this, r));
+            WToolkit.postEvent(new InvocationEvent(this, r));
         }
     }
 
diff --git a/src/java.desktop/windows/classes/sun/awt/windows/WInputMethod.java b/src/java.desktop/windows/classes/sun/awt/windows/WInputMethod.java
index a9237e21ff6..50ad23fabcd 100644
--- a/src/java.desktop/windows/classes/sun/awt/windows/WInputMethod.java
+++ b/src/java.desktop/windows/classes/sun/awt/windows/WInputMethod.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -602,7 +602,7 @@ final class WInputMethod extends InputMethodAdapter
                                                       commitedTextLength,
                                                       TextHitInfo.leading(caretPos),
                                                       TextHitInfo.leading(visiblePos));
-        WToolkit.postEvent(WToolkit.targetToAppContext(source), event);
+        WToolkit.postEvent(event);
     }
 
     public void inquireCandidatePosition()
@@ -641,8 +641,7 @@ final class WInputMethod extends InputMethodAdapter
                 openCandidateWindow(awtFocussedComponentPeer, x, y);
             }
         };
-        WToolkit.postEvent(WToolkit.targetToAppContext(source),
-                           new InvocationEvent(source, r));
+        WToolkit.postEvent(new InvocationEvent(source, r));
     }
 
     // java.awt.Toolkit#getNativeContainer() is not available
diff --git a/src/java.desktop/windows/classes/sun/awt/windows/WMenuItemPeer.java b/src/java.desktop/windows/classes/sun/awt/windows/WMenuItemPeer.java
index 4abb9fa84ae..2594bd38a7d 100644
--- a/src/java.desktop/windows/classes/sun/awt/windows/WMenuItemPeer.java
+++ b/src/java.desktop/windows/classes/sun/awt/windows/WMenuItemPeer.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1996, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1996, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -123,7 +123,7 @@ class WMenuItemPeer extends WObjectPeer implements MenuItemPeer {
      * Post an event. Queue it for execution by the callback thread.
      */
     void postEvent(AWTEvent event) {
-        WToolkit.postEvent(WToolkit.targetToAppContext(target), event);
+        WToolkit.postEvent(event);
     }
 
     native void create(WMenuPeer parent);
diff --git a/src/java.desktop/windows/classes/sun/awt/windows/WToolkit.java b/src/java.desktop/windows/classes/sun/awt/windows/WToolkit.java
index 0fdc4c6005b..4ed3e6b7e68 100644
--- a/src/java.desktop/windows/classes/sun/awt/windows/WToolkit.java
+++ b/src/java.desktop/windows/classes/sun/awt/windows/WToolkit.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1996, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1996, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -123,7 +123,6 @@ import javax.swing.text.JTextComponent;
 
 import sun.awt.AWTAccessor;
 import sun.awt.AWTAutoShutdown;
-import sun.awt.AppContext;
 import sun.awt.DisplayChangedListener;
 import sun.awt.LightweightFrame;
 import sun.awt.SunToolkit;
@@ -777,20 +776,7 @@ public final class WToolkit extends SunToolkit implements Runnable {
                 ((DisplayChangedListener) lge).displayChanged();
             }
         };
-        if (AppContext.getAppContext() != null) {
-            // Common case, standalone application
-            EventQueue.invokeLater(runnable);
-        } else {
-            if (displayChangeExecutor == null) {
-                // No synchronization, called on the Toolkit thread only
-                displayChangeExecutor = Executors.newFixedThreadPool(1, r -> {
-                    Thread t = Executors.defaultThreadFactory().newThread(r);
-                    t.setDaemon(true);
-                    return t;
-                });
-            }
-            displayChangeExecutor.submit(runnable);
-        }
+        EventQueue.invokeLater(runnable);
     }
 
     /**
@@ -910,17 +896,7 @@ public final class WToolkit extends SunToolkit implements Runnable {
         }
 
         updateXPStyleEnabled(props.get(XPSTYLE_THEME_ACTIVE));
-
-        if (AppContext.getAppContext() == null) {
-            // We cannot post the update to any EventQueue. Listeners will
-            // be called on EDTs by DesktopPropertyChangeSupport
-            updateProperties(props);
-        } else {
-            // Cannot update on Toolkit thread.
-            // DesktopPropertyChangeSupport will call listeners on Toolkit
-            // thread if it has AppContext (standalone mode)
-            EventQueue.invokeLater(() -> updateProperties(props));
-        }
+        EventQueue.invokeLater(() -> updateProperties(props));
     }
 
     private synchronized void updateProperties(final Map<String, Object> props) {
diff --git a/src/java.desktop/windows/classes/sun/awt/windows/WTrayIconPeer.java b/src/java.desktop/windows/classes/sun/awt/windows/WTrayIconPeer.java
index 7cf92292a32..5c04803669d 100644
--- a/src/java.desktop/windows/classes/sun/awt/windows/WTrayIconPeer.java
+++ b/src/java.desktop/windows/classes/sun/awt/windows/WTrayIconPeer.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2005, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -181,7 +181,7 @@ final class WTrayIconPeer extends WObjectPeer implements TrayIconPeer {
     }
 
     void postEvent(AWTEvent event) {
-        WToolkit.postEvent(WToolkit.targetToAppContext(target), event);
+        WToolkit.postEvent(event);
     }
 
     native void create();
diff --git a/src/jdk.compiler/share/classes/com/sun/tools/javac/parser/JavacParser.java b/src/jdk.compiler/share/classes/com/sun/tools/javac/parser/JavacParser.java
index 16f26c836f8..df5da5cb954 100644
--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/parser/JavacParser.java
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/parser/JavacParser.java
@@ -4421,12 +4421,13 @@ public class JavacParser implements Parser {
                 JCMethodDecl methDef = (JCMethodDecl) def;
                 if (methDef.name == names.init && methDef.params.isEmpty() && (methDef.mods.flags & Flags.COMPACT_RECORD_CONSTRUCTOR) != 0) {
                     ListBuffer<JCVariableDecl> tmpParams = new ListBuffer<>();
+                    TreeCopier<Void> copier = new TreeCopier<>(F);
                     for (JCVariableDecl param : headerFields) {
                         tmpParams.add(F.at(param)
                                 // we will get flags plus annotations from the record component
                                 .VarDef(F.Modifiers(Flags.PARAMETER | Flags.GENERATED_MEMBER | Flags.MANDATED | param.mods.flags & Flags.VARARGS,
-                                        param.mods.annotations),
-                                param.name, param.vartype, null));
+                                        copier.copy(param.mods.annotations)),
+                                param.name, copier.copy(param.vartype), null));
                     }
                     methDef.params = tmpParams.toList();
                 }
@@ -5406,6 +5407,12 @@ public class JavacParser implements Parser {
 
         if (recordComponent) {
             mods = modifiersOpt();
+            /* it could be that the user added a javadoc with the @deprecated tag, when analyzing this
+             * javadoc, javac will set the DEPRECATED flag. This is correct in most cases but not for
+             * record components and thus should be removed in that case. Any javadoc applied to
+             * record components is ignored
+             */
+            mods.flags &= ~Flags.DEPRECATED;
         } else {
             mods = optFinal(Flags.PARAMETER | (lambdaParameter ? Flags.LAMBDA_PARAMETER : 0));
         }
diff --git a/src/jdk.incubator.vector/share/classes/jdk/incubator/vector/DoubleVector.java b/src/jdk.incubator.vector/share/classes/jdk/incubator/vector/DoubleVector.java
index 519122b4d28..5e7c97dc56d 100644
--- a/src/jdk.incubator.vector/share/classes/jdk/incubator/vector/DoubleVector.java
+++ b/src/jdk.incubator.vector/share/classes/jdk/incubator/vector/DoubleVector.java
@@ -724,7 +724,7 @@ public abstract class DoubleVector extends AbstractVector<Double> {
     @ForceInline
     final
     DoubleVector unaryMathOp(VectorOperators.Unary op) {
-        return VectorMathLibrary.unaryMathOp(op, opCode(op), species(), DoubleVector::unaryOperations,
+        return VectorMathLibrary.unaryMathOp(op, opCode(op), vspecies(), DoubleVector::unaryOperations,
                                              this);
     }
 
@@ -851,7 +851,7 @@ public abstract class DoubleVector extends AbstractVector<Double> {
     @ForceInline
     final
     DoubleVector binaryMathOp(VectorOperators.Binary op, DoubleVector that) {
-        return VectorMathLibrary.binaryMathOp(op, opCode(op), species(), DoubleVector::binaryOperations,
+        return VectorMathLibrary.binaryMathOp(op, opCode(op), vspecies(), DoubleVector::binaryOperations,
                                               this, that);
     }
 
diff --git a/src/jdk.incubator.vector/share/classes/jdk/incubator/vector/FloatVector.java b/src/jdk.incubator.vector/share/classes/jdk/incubator/vector/FloatVector.java
index 9950abf696d..5862a295fa3 100644
--- a/src/jdk.incubator.vector/share/classes/jdk/incubator/vector/FloatVector.java
+++ b/src/jdk.incubator.vector/share/classes/jdk/incubator/vector/FloatVector.java
@@ -724,7 +724,7 @@ public abstract class FloatVector extends AbstractVector<Float> {
     @ForceInline
     final
     FloatVector unaryMathOp(VectorOperators.Unary op) {
-        return VectorMathLibrary.unaryMathOp(op, opCode(op), species(), FloatVector::unaryOperations,
+        return VectorMathLibrary.unaryMathOp(op, opCode(op), vspecies(), FloatVector::unaryOperations,
                                              this);
     }
 
@@ -851,7 +851,7 @@ public abstract class FloatVector extends AbstractVector<Float> {
     @ForceInline
     final
     FloatVector binaryMathOp(VectorOperators.Binary op, FloatVector that) {
-        return VectorMathLibrary.binaryMathOp(op, opCode(op), species(), FloatVector::binaryOperations,
+        return VectorMathLibrary.binaryMathOp(op, opCode(op), vspecies(), FloatVector::binaryOperations,
                                               this, that);
     }
 
diff --git a/src/jdk.incubator.vector/share/classes/jdk/incubator/vector/VectorMathLibrary.java b/src/jdk.incubator.vector/share/classes/jdk/incubator/vector/VectorMathLibrary.java
index 4898cb70884..1c1cfcc78c7 100644
--- a/src/jdk.incubator.vector/share/classes/jdk/incubator/vector/VectorMathLibrary.java
+++ b/src/jdk.incubator.vector/share/classes/jdk/incubator/vector/VectorMathLibrary.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2025, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -283,7 +283,7 @@ import static jdk.internal.vm.vector.Utils.debug;
     @ForceInline
     /*package-private*/ static
     <E, V extends Vector<E>>
-    V unaryMathOp(Unary op, int opc, VectorSpecies<E> vspecies,
+    V unaryMathOp(Unary op, int opc, AbstractSpecies<E> vspecies,
                   IntFunction<VectorSupport.UnaryOperation<V,?>> implSupplier,
                   V v) {
         var entry = lookup(op, opc, vspecies, implSupplier);
@@ -293,7 +293,7 @@ import static jdk.internal.vm.vector.Utils.debug;
             @SuppressWarnings({"unchecked"})
             Class<V> vt = (Class<V>)vspecies.vectorType();
             return VectorSupport.libraryUnaryOp(
-                    entry.entry.address(), vt, vspecies.elementType(), vspecies.length(), entry.name,
+                    entry.entry.address(), vt, vspecies.laneTypeOrdinal(), vspecies.length(), entry.name,
                     v,
                     entry.impl);
         } else {
@@ -304,7 +304,7 @@ import static jdk.internal.vm.vector.Utils.debug;
     @ForceInline
     /*package-private*/ static
     <E, V extends Vector<E>>
-    V binaryMathOp(Binary op, int opc, VectorSpecies<E> vspecies,
+    V binaryMathOp(Binary op, int opc, AbstractSpecies<E> vspecies,
                    IntFunction<VectorSupport.BinaryOperation<V,?>> implSupplier,
                    V v1, V v2) {
         var entry = lookup(op, opc, vspecies, implSupplier);
@@ -314,7 +314,7 @@ import static jdk.internal.vm.vector.Utils.debug;
             @SuppressWarnings({"unchecked"})
             Class<V> vt = (Class<V>)vspecies.vectorType();
             return VectorSupport.libraryBinaryOp(
-                    entry.entry.address(), vt, vspecies.elementType(), vspecies.length(), entry.name,
+                    entry.entry.address(), vt, vspecies.laneTypeOrdinal(), vspecies.length(), entry.name,
                     v1, v2,
                     entry.impl);
         } else {
diff --git a/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/ExternalSpecsWriter.java b/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/ExternalSpecsWriter.java
index 0115de5558f..b8767dd9913 100644
--- a/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/ExternalSpecsWriter.java
+++ b/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/ExternalSpecsWriter.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019, 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -57,7 +57,11 @@ import jdk.javadoc.internal.doclets.toolkit.util.DocPaths;
 import jdk.javadoc.internal.doclets.toolkit.util.IndexItem;
 import jdk.javadoc.internal.html.Content;
 import jdk.javadoc.internal.html.ContentBuilder;
+import jdk.javadoc.internal.html.HtmlAttr;
+import jdk.javadoc.internal.html.HtmlId;
+import jdk.javadoc.internal.html.HtmlTag;
 import jdk.javadoc.internal.html.HtmlTree;
+import jdk.javadoc.internal.html.Script;
 import jdk.javadoc.internal.html.Text;
 
 import static java.util.stream.Collectors.groupingBy;
@@ -108,6 +112,24 @@ public class ExternalSpecsWriter extends HtmlDocletWriter {
                         HtmlTree.HEADING(Headings.PAGE_TITLE_HEADING,
                                 contents.getContent("doclet.External_Specifications"))))
                 .addMainContent(mainContent)
+                .addMainContent(new Script("""
+                        let select = document.getElementById('specs-by-domain');
+                        select.addEventListener("change", selectHost);
+                        addEventListener("pageshow", selectHost);
+                        function selectHost() {
+                            const selectedClass = select.value ? "external-specs-tab" + select.value : "external-specs";
+                            let tabPanel = document.getElementById("external-specs.tabpanel");
+                            let count = 0;
+                            tabPanel.querySelectorAll("div.external-specs").forEach(function(elem) {
+                                elem.style.display = elem.classList.contains(selectedClass) ? "" : "none";
+                                if (elem.style.display === "") {
+                                    let isEvenRow = count++ % 4 < 2;
+                                    toggleStyle(elem.classList, isEvenRow, evenRowColor, oddRowColor);
+                                }
+                            });
+                        }
+                        selectHost();
+                        """).asContent())
                 .setFooter(getFooter()));
         printHtmlDocument(null, "external specifications", body);
 
@@ -180,7 +202,7 @@ public class ExternalSpecsWriter extends HtmlDocletWriter {
         boolean noHost = false;
         for (var searchIndexItems : searchIndexMap.values()) {
             try {
-                URI uri = getSpecURI(searchIndexItems.get(0));
+                URI uri = getSpecURI(searchIndexItems.getFirst());
                 String host = uri.getHost();
                 if (host != null) {
                     hostNamesSet.add(host);
@@ -191,14 +213,19 @@ public class ExternalSpecsWriter extends HtmlDocletWriter {
                 // ignore
             }
         }
-        var hostNamesList = new ArrayList<>(hostNamesSet);
 
         var table = new Table<URI>(HtmlStyles.summaryTable)
                 .setCaption(contents.externalSpecifications)
                 .setHeader(new TableHeader(contents.specificationLabel, contents.referencedIn))
                 .setColumnStyles(HtmlStyles.colFirst, HtmlStyles.colLast)
-                .setId(HtmlIds.EXTERNAL_SPECS);
+                .setId(HtmlIds.EXTERNAL_SPECS)
+                .setDefaultTab(contents.externalSpecifications)
+                .setRenderTabs(false);
+
+        var hostNamesList = new ArrayList<>(hostNamesSet);
+        Content selector = Text.EMPTY;
         if ((hostNamesList.size() + (noHost ? 1 : 0)) > 1) {
+            selector = createHostSelect(hostNamesList, noHost);
             for (var host : hostNamesList) {
                 table.addTab(Text.of(host), u -> host.equals(u.getHost()));
             }
@@ -207,10 +234,9 @@ public class ExternalSpecsWriter extends HtmlDocletWriter {
                         u -> u.getHost() == null);
             }
         }
-        table.setDefaultTab(Text.of(resources.getText("doclet.External_Specifications.All_Specifications")));
 
         for (List<IndexItem> searchIndexItems : searchIndexMap.values()) {
-            IndexItem ii = searchIndexItems.get(0);
+            IndexItem ii = searchIndexItems.getFirst();
             Content specName = createSpecLink(ii);
             Content referencesList = HtmlTree.UL(HtmlStyles.refList, searchIndexItems,
                     item -> HtmlTree.LI(createLink(item)));
@@ -227,6 +253,7 @@ public class ExternalSpecsWriter extends HtmlDocletWriter {
                 table.addRow(specName, references);
             }
         }
+        content.add(selector);
         content.add(table);
     }
 
@@ -235,6 +262,29 @@ public class ExternalSpecsWriter extends HtmlDocletWriter {
                 .collect(groupingBy(IndexItem::getLabel, () -> new TreeMap<>(getTitleComparator()), toList()));
     }
 
+    private Content createHostSelect(List<String> hosts, boolean hasLocal) {
+        var index = 1;
+        var id = HtmlId.of("specs-by-domain");
+        var specsByHost = resources.getText("doclet.External_Specifications.by-host");
+        var select = HtmlTree.of(HtmlTag.SELECT)
+                .setId(id)
+                .add(HtmlTree.of(HtmlTag.OPTION)
+                        .put(HtmlAttr.VALUE, "")
+                        .add(Text.of(resources.getText("doclet.External_Specifications.all-hosts"))));
+
+        for (var host : hosts) {
+            select.add(HtmlTree.of(HtmlTag.OPTION)
+                    .put(HtmlAttr.VALUE, Integer.toString(index++))
+                    .add(Text.of(host)));
+        }
+        if (hasLocal) {
+            select.add(HtmlTree.of(HtmlTag.OPTION)
+                    .put(HtmlAttr.VALUE, Integer.toString(index))
+                    .add(Text.of("Local")));
+        }
+        return new ContentBuilder(HtmlTree.LABEL(id.name(), Text.of(specsByHost)), Text.of(" "), select);
+    }
+
     Comparator<String> getTitleComparator() {
         Collator collator = Collator.getInstance();
         return (s1, s2) -> {
diff --git a/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/resources/standard.properties b/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/resources/standard.properties
index 4366295477b..1aba5c9862b 100644
--- a/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/resources/standard.properties
+++ b/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/resources/standard.properties
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2010, 2025, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2010, 2026, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -180,7 +180,8 @@ doclet.Inheritance_Tree=Inheritance Tree
 doclet.DefinedIn=Defined In
 doclet.ReferencedIn=Referenced In
 doclet.External_Specifications=External Specifications
-doclet.External_Specifications.All_Specifications=All Specifications
+doclet.External_Specifications.by-host=Show specifications by host name:
+doclet.External_Specifications.all-hosts=All host names
 doclet.External_Specifications.no-host=Local
 doclet.Specification=Specification
 doclet.Summary_Page=Summary Page
diff --git a/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/resources/stylesheet.css b/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/resources/stylesheet.css
index 6198df5c2f3..5bd14f7cf33 100644
--- a/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/resources/stylesheet.css
+++ b/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/resources/stylesheet.css
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2010, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2010, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * Licensed under the Universal Permissive License v 1.0 as shown at https://oss.oracle.com/licenses/upl/
@@ -1228,7 +1228,7 @@ input::placeholder {
 input:focus::placeholder {
     color: transparent;
 }
-select#search-modules {
+select {
     margin: 0 10px 10px 2px;
     font-size: var(--nav-font-size);
     padding: 3px 5px;
diff --git a/src/jdk.jpackage/macosx/classes/jdk/jpackage/internal/MacFromOptions.java b/src/jdk.jpackage/macosx/classes/jdk/jpackage/internal/MacFromOptions.java
index 0598e6bc2a9..4cd4f386ad8 100644
--- a/src/jdk.jpackage/macosx/classes/jdk/jpackage/internal/MacFromOptions.java
+++ b/src/jdk.jpackage/macosx/classes/jdk/jpackage/internal/MacFromOptions.java
@@ -29,6 +29,8 @@ import static jdk.jpackage.internal.FromOptions.createPackageBuilder;
 import static jdk.jpackage.internal.MacPackagingPipeline.APPLICATION_LAYOUT;
 import static jdk.jpackage.internal.MacRuntimeValidator.validateRuntimeHasJliLib;
 import static jdk.jpackage.internal.MacRuntimeValidator.validateRuntimeHasNoBinDir;
+import static jdk.jpackage.internal.OptionUtils.isBundlingOperation;
+import static jdk.jpackage.internal.cli.StandardBundlingOperation.CREATE_MAC_PKG;
 import static jdk.jpackage.internal.cli.StandardBundlingOperation.SIGN_MAC_APP_IMAGE;
 import static jdk.jpackage.internal.cli.StandardOption.APPCLASS;
 import static jdk.jpackage.internal.cli.StandardOption.ICON;
@@ -120,23 +122,39 @@ final class MacFromOptions {
 
         final Optional<SigningIdentityBuilder> pkgSigningIdentityBuilder;
 
-        if (sign && (MAC_INSTALLER_SIGN_IDENTITY.containsIn(options) || MAC_SIGNING_KEY_NAME.containsIn(options))) {
+        if (!sign) {
+            pkgSigningIdentityBuilder = Optional.empty();
+        } else if (hasAppImageSignIdentity(options) && !hasPkgInstallerSignIdentity(options)) {
+            // They explicitly request to sign the app image,
+            // but don't specify signing identity for signing the PKG package.
+            // They want signed app image inside of unsigned PKG.
+            pkgSigningIdentityBuilder = Optional.empty();
+        } else {
             final var signingIdentityBuilder = createSigningIdentityBuilder(options);
-            MAC_INSTALLER_SIGN_IDENTITY.ifPresentIn(options, signingIdentityBuilder::signingIdentity);
-            MAC_SIGNING_KEY_NAME.findIn(options).ifPresent(userName -> {
-                final StandardCertificateSelector domain;
-                if (appStore) {
-                    domain = StandardCertificateSelector.APP_STORE_PKG_INSTALLER;
-                } else {
-                    domain = StandardCertificateSelector.PKG_INSTALLER;
-                }
 
-                signingIdentityBuilder.certificateSelector(StandardCertificateSelector.create(userName, domain));
-            });
+            MAC_INSTALLER_SIGN_IDENTITY.findIn(options).ifPresentOrElse(
+                    signingIdentityBuilder::signingIdentity,
+                    () -> {
+                        MAC_SIGNING_KEY_NAME.findIn(options).or(() -> {
+                            if (MAC_APP_IMAGE_SIGN_IDENTITY.findIn(options).isPresent()) {
+                                return Optional.empty();
+                            } else {
+                                return Optional.of("");
+                            }
+                        }).ifPresent(userName -> {
+                            final StandardCertificateSelector domain;
+                            if (appStore) {
+                                domain = StandardCertificateSelector.APP_STORE_PKG_INSTALLER;
+                            } else {
+                                domain = StandardCertificateSelector.PKG_INSTALLER;
+                            }
+
+                            signingIdentityBuilder.certificateSelector(StandardCertificateSelector.create(userName, domain));
+                        });
+                    }
+            );
 
             pkgSigningIdentityBuilder = Optional.of(signingIdentityBuilder);
-        } else {
-            pkgSigningIdentityBuilder = Optional.empty();
         }
 
         ApplicationWithDetails app = null;
@@ -230,33 +248,47 @@ final class MacFromOptions {
         MAC_BUNDLE_IDENTIFIER.ifPresentIn(options, appBuilder::bundleIdentifier);
         MAC_APP_CATEGORY.ifPresentIn(options, appBuilder::category);
 
-        final boolean sign;
+        final boolean sign = MAC_SIGN.getFrom(options);
         final boolean appStore;
 
-        if (PREDEFINED_APP_IMAGE.containsIn(options) && OptionUtils.bundlingOperation(options) != SIGN_MAC_APP_IMAGE) {
+        if (PREDEFINED_APP_IMAGE.containsIn(options)) {
             final var appImageFileOptions = superAppBuilder.externalApplication().orElseThrow().extra();
-            sign = MAC_SIGN.getFrom(appImageFileOptions);
             appStore = MAC_APP_STORE.getFrom(appImageFileOptions);
         } else {
-            sign = MAC_SIGN.getFrom(options);
             appStore = MAC_APP_STORE.getFrom(options);
         }
 
         appBuilder.appStore(appStore);
 
-        if (sign && (MAC_APP_IMAGE_SIGN_IDENTITY.containsIn(options) || MAC_SIGNING_KEY_NAME.containsIn(options))) {
-            final var signingIdentityBuilder = createSigningIdentityBuilder(options);
-            MAC_APP_IMAGE_SIGN_IDENTITY.ifPresentIn(options, signingIdentityBuilder::signingIdentity);
-            MAC_SIGNING_KEY_NAME.findIn(options).ifPresent(userName -> {
-                final StandardCertificateSelector domain;
-                if (appStore) {
-                    domain = StandardCertificateSelector.APP_STORE_APP_IMAGE;
-                } else {
-                    domain = StandardCertificateSelector.APP_IMAGE;
-                }
+        final var signOnlyPkgInstaller = sign && (
+                isBundlingOperation(options, CREATE_MAC_PKG)
+                && !hasAppImageSignIdentity(options)
+                && hasPkgInstallerSignIdentity(options));
 
-                signingIdentityBuilder.certificateSelector(StandardCertificateSelector.create(userName, domain));
-            });
+        if (sign && !signOnlyPkgInstaller) {
+            final var signingIdentityBuilder = createSigningIdentityBuilder(options);
+
+            MAC_APP_IMAGE_SIGN_IDENTITY.findIn(options).ifPresentOrElse(
+                    signingIdentityBuilder::signingIdentity,
+                    () -> {
+                        MAC_SIGNING_KEY_NAME.findIn(options).or(() -> {
+                            if (MAC_INSTALLER_SIGN_IDENTITY.containsIn(options)) {
+                                return Optional.empty();
+                            } else {
+                                return Optional.of("");
+                            }
+                        }).ifPresent(userName -> {
+                            final StandardCertificateSelector domain;
+                            if (appStore) {
+                                domain = StandardCertificateSelector.APP_STORE_APP_IMAGE;
+                            } else {
+                                domain = StandardCertificateSelector.APP_IMAGE;
+                            }
+
+                            signingIdentityBuilder.certificateSelector(StandardCertificateSelector.create(userName, domain));
+                        });
+                    }
+            );
 
             final var signingBuilder = new AppImageSigningConfigBuilder(signingIdentityBuilder);
             if (appStore) {
@@ -331,4 +363,12 @@ final class MacFromOptions {
 
         return builder.create(fa);
     }
+
+    private static boolean hasAppImageSignIdentity(Options options) {
+        return options.contains(MAC_SIGNING_KEY_NAME) || options.contains(MAC_APP_IMAGE_SIGN_IDENTITY);
+    }
+
+    private static boolean hasPkgInstallerSignIdentity(Options options) {
+        return options.contains(MAC_SIGNING_KEY_NAME) || options.contains(MAC_INSTALLER_SIGN_IDENTITY);
+    }
 }
diff --git a/src/jdk.jpackage/share/classes/jdk/jpackage/internal/OptionUtils.java b/src/jdk.jpackage/share/classes/jdk/jpackage/internal/OptionUtils.java
index 97e1274f078..b39e67a9eb7 100644
--- a/src/jdk.jpackage/share/classes/jdk/jpackage/internal/OptionUtils.java
+++ b/src/jdk.jpackage/share/classes/jdk/jpackage/internal/OptionUtils.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2025, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -32,6 +32,7 @@ import static jdk.jpackage.internal.cli.StandardOption.PREDEFINED_APP_IMAGE;
 import static jdk.jpackage.internal.cli.StandardOption.PREDEFINED_RUNTIME_IMAGE;
 
 import java.nio.file.Path;
+import java.util.Objects;
 import jdk.jpackage.internal.cli.Options;
 import jdk.jpackage.internal.cli.StandardBundlingOperation;
 
@@ -51,4 +52,8 @@ final class OptionUtils {
     static StandardBundlingOperation bundlingOperation(Options options) {
         return StandardBundlingOperation.valueOf(BUNDLING_OPERATION_DESCRIPTOR.getFrom(options)).orElseThrow();
     }
+
+    static boolean isBundlingOperation(Options options, StandardBundlingOperation op) {
+        return bundlingOperation(options).equals(Objects.requireNonNull(op));
+    }
 }
diff --git a/src/jdk.jpackage/share/classes/jdk/jpackage/internal/cli/StandardOption.java b/src/jdk.jpackage/share/classes/jdk/jpackage/internal/cli/StandardOption.java
index 4450a6168e2..eca82da99aa 100644
--- a/src/jdk.jpackage/share/classes/jdk/jpackage/internal/cli/StandardOption.java
+++ b/src/jdk.jpackage/share/classes/jdk/jpackage/internal/cli/StandardOption.java
@@ -109,7 +109,7 @@ public final class StandardOption {
 
     public static final OptionValue<Boolean> VERBOSE = auxilaryOption("verbose").create();
 
-    public static final OptionValue<BundleType> TYPE = option("type", BundleType.class).addAliases("t")
+    static final OptionValue<BundleType> TYPE = option("type", BundleType.class).addAliases("t")
             .scope(StandardBundlingOperation.values()).inScope(NOT_BUILDING_APP_IMAGE)
             .converterExceptionFactory(ERROR_WITH_VALUE).converterExceptionFormatString("ERR_InvalidInstallerType")
             .converter(str -> {
diff --git a/src/jdk.zipfs/share/classes/jdk/nio/zipfs/ZipFileSystem.java b/src/jdk.zipfs/share/classes/jdk/nio/zipfs/ZipFileSystem.java
index b3db11eb1fe..3223ff9dccd 100644
--- a/src/jdk.zipfs/share/classes/jdk/nio/zipfs/ZipFileSystem.java
+++ b/src/jdk.zipfs/share/classes/jdk/nio/zipfs/ZipFileSystem.java
@@ -105,6 +105,9 @@ class ZipFileSystem extends FileSystem {
     private static final String COMPRESSION_METHOD_DEFLATED = "DEFLATED";
     // Value specified for compressionMethod property to not compress Zip entries
     private static final String COMPRESSION_METHOD_STORED = "STORED";
+    // CEN size is limited to the maximum array size in the JDK
+    // See ArraysSupport.SOFT_MAX_ARRAY_LENGTH;
+    private static final int MAX_CEN_SIZE = Integer.MAX_VALUE - 8;
 
     private final ZipFileSystemProvider provider;
     private final Path zfpath;
@@ -1353,7 +1356,7 @@ class ZipFileSystem extends FileSystem {
                     // to use the end64 values
                     end.cenlen = cenlen64;
                     end.cenoff = cenoff64;
-                    end.centot = (int)centot64; // assume total < 2g
+                    end.centot = centot64;
                     end.endpos = end64pos;
                     return end;
                 }
@@ -1575,23 +1578,34 @@ class ZipFileSystem extends FileSystem {
             buildNodeTree();
             return null;         // only END header present
         }
-        if (end.cenlen > end.endpos)
-            throw new ZipException("invalid END header (bad central directory size)");
+        // Validate END header
+        if (end.cenlen > end.endpos) {
+            zerror("invalid END header (bad central directory size)");
+        }
         long cenpos = end.endpos - end.cenlen;     // position of CEN table
-
         // Get position of first local file (LOC) header, taking into
-        // account that there may be a stub prefixed to the zip file.
+        // account that there may be a stub prefixed to the ZIP file.
         locpos = cenpos - end.cenoff;
-        if (locpos < 0)
-            throw new ZipException("invalid END header (bad central directory offset)");
+        if (locpos < 0) {
+            zerror("invalid END header (bad central directory offset)");
+        }
+        if (end.cenlen > MAX_CEN_SIZE) {
+            zerror("invalid END header (central directory size too large)");
+        }
+        if (end.centot < 0 || end.centot > end.cenlen / CENHDR) {
+            zerror("invalid END header (total entries count too large)");
+        }
+        // Validation ensures these are <= Integer.MAX_VALUE
+        int cenlen = Math.toIntExact(end.cenlen);
+        int centot = Math.toIntExact(end.centot);
 
         // read in the CEN
-        byte[] cen = new byte[(int)(end.cenlen)];
-        if (readNBytesAt(cen, 0, cen.length, cenpos) != end.cenlen) {
-            throw new ZipException("read CEN tables failed");
+        byte[] cen = new byte[cenlen];
+        if (readNBytesAt(cen, 0, cen.length, cenpos) != cenlen) {
+            zerror("read CEN tables failed");
         }
         // Iterate through the entries in the central directory
-        inodes = LinkedHashMap.newLinkedHashMap(end.centot + 1);
+        inodes = LinkedHashMap.newLinkedHashMap(centot + 1);
         int pos = 0;
         int limit = cen.length;
         while (pos < limit) {
@@ -2666,7 +2680,7 @@ class ZipFileSystem extends FileSystem {
         // int  disknum;
         // int  sdisknum;
         // int  endsub;
-        int  centot;        // 4 bytes
+        long centot;        // 4 bytes
         long cenlen;        // 4 bytes
         long cenoff;        // 4 bytes
         // int  comlen;     // comment length
@@ -2689,7 +2703,7 @@ class ZipFileSystem extends FileSystem {
                 xoff = ZIP64_MINVAL;
                 hasZip64 = true;
             }
-            int count = centot;
+            int count = Math.toIntExact(centot);
             if (count >= ZIP64_MINVAL32) {
                 count = ZIP64_MINVAL32;
                 hasZip64 = true;
diff --git a/test/hotspot/gtest/utilities/test_globalDefinitions.cpp b/test/hotspot/gtest/utilities/test_globalDefinitions.cpp
index f24d74ea529..6636efbba8e 100644
--- a/test/hotspot/gtest/utilities/test_globalDefinitions.cpp
+++ b/test/hotspot/gtest/utilities/test_globalDefinitions.cpp
@@ -321,3 +321,38 @@ TEST(globalDefinitions, jlong_from) {
   val = jlong_from(0xABCD, 0xEFEF);
   EXPECT_EQ(val, CONST64(0x0000ABCD0000EFEF));
 }
+
+struct NoCopy {
+  int x;
+  NONCOPYABLE(NoCopy);
+};
+
+TEST(globalDefinitions, sizeof_auto) {
+  char x = 5;
+  char& y = x;
+  char* z = &x;
+  EXPECT_EQ(sizeof_auto(x), sizeof(x));
+  EXPECT_EQ(sizeof_auto(y), sizeof(y));
+  EXPECT_EQ(sizeof_auto(z), sizeof(z));
+
+  NoCopy nc{0};
+  sizeof_auto(nc);
+
+  static_assert(sizeof_auto(char[1LL])  == 1);
+  static_assert(sizeof_auto(char[std::numeric_limits<uint8_t>::max()  + 1LL]) == std::numeric_limits<uint8_t>::max()  + 1LL);
+  static_assert(sizeof_auto(char[std::numeric_limits<uint16_t>::max() + 1LL]) == std::numeric_limits<uint16_t>::max() + 1LL);
+#if defined(_LP64) && !defined(_WINDOWS)
+  // char array sometimes limited to 2 gig length on 32 bit platforms (signed), disabled for Windows because of compiler error C2148.
+  static_assert(sizeof_auto(char[std::numeric_limits<uint32_t>::max() + 1LL]) == std::numeric_limits<uint32_t>::max() + 1LL);
+#endif
+
+  static_assert(sizeof(sizeof_auto(char[std::numeric_limits<uint8_t>::max()]))        == sizeof(uint8_t));
+  static_assert(sizeof(sizeof_auto(char[std::numeric_limits<uint8_t>::max() + 1LL]))  == sizeof(uint16_t));
+  static_assert(sizeof(sizeof_auto(char[std::numeric_limits<uint16_t>::max()]))       == sizeof(uint16_t));
+  static_assert(sizeof(sizeof_auto(char[std::numeric_limits<uint16_t>::max() + 1LL])) == sizeof(uint32_t));
+#if defined(_LP64) && !defined(_WINDOWS)
+  // char array sometimes limited to 2 gig length on 32 bit platforms (signed), disabled for Windows because of compiler error C2148.
+  static_assert(sizeof(sizeof_auto(char[std::numeric_limits<uint32_t>::max()]))       == sizeof(uint32_t));
+  static_assert(sizeof(sizeof_auto(char[std::numeric_limits<uint32_t>::max() + 1LL])) == sizeof(uint64_t));
+#endif
+}
diff --git a/test/hotspot/jtreg/compiler/lib/compile_framework/CompileFramework.java b/test/hotspot/jtreg/compiler/lib/compile_framework/CompileFramework.java
index d9a98582aec..3612f5ab3d3 100644
--- a/test/hotspot/jtreg/compiler/lib/compile_framework/CompileFramework.java
+++ b/test/hotspot/jtreg/compiler/lib/compile_framework/CompileFramework.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2024, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2024, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -28,6 +28,8 @@ import java.lang.reflect.Method;
 import java.nio.file.Path;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Optional;
+import jtreg.SkippedException;
 
 /**
  * This is the entry-point for the Compile Framework. Its purpose it to allow
@@ -132,10 +134,31 @@ public class CompileFramework {
         } catch (IllegalAccessException e) {
             throw new CompileFrameworkException("Illegal access:", e);
         } catch (InvocationTargetException e) {
+            // Rethrow jtreg.SkippedException so the tests are properly skipped.
+            // If we wrapped the SkippedException instead, it would get buried
+            // in the exception causes and cause a failed test instead.
+            findJtregSkippedExceptionInCauses(e).ifPresent(ex -> { throw ex; });
             throw new CompileFrameworkException("Invocation target:", e);
         }
     }
 
+    private static Optional<RuntimeException> findJtregSkippedExceptionInCauses(Throwable ex) {
+        while (ex != null) {
+            // jtreg.SkippedException can be from a different classloader, comparing by name
+            if (ex.getClass().getName().equals(SkippedException.class.getName())) {
+                return Optional.of((RuntimeException) ex);
+            }
+
+            if (ex.getCause() == ex) {
+                break;
+            }
+
+            ex = ex.getCause();
+        }
+
+        return Optional.empty();
+    }
+
     private Method findMethod(String className, String methodName) {
         Class<?> c = getClass(className);
         Method[] methods = c.getDeclaredMethods();
diff --git a/test/hotspot/jtreg/compiler/lib/ir_framework/IRNode.java b/test/hotspot/jtreg/compiler/lib/ir_framework/IRNode.java
index c31ce198644..3508c06ad0a 100644
--- a/test/hotspot/jtreg/compiler/lib/ir_framework/IRNode.java
+++ b/test/hotspot/jtreg/compiler/lib/ir_framework/IRNode.java
@@ -1488,6 +1488,12 @@ public class IRNode {
         beforeMatchingNameRegex(VECTOR_MASK_FIRST_TRUE, "VectorMaskFirstTrue");
     }
 
+    // Can only be used if libjsvml or libsleef is available
+    public static final String CALL_LEAF_VECTOR = PREFIX + "CALL_LEAF_VECTOR" + POSTFIX;
+    static {
+        beforeMatchingNameRegex(CALL_LEAF_VECTOR, "CallLeafVector");
+    }
+
     // Can only be used if avx512_vnni is available.
     public static final String MUL_ADD_VS2VI_VNNI = PREFIX + "MUL_ADD_VS2VI_VNNI" + POSTFIX;
     static {
diff --git a/test/hotspot/jtreg/compiler/loopopts/superword/TestCompatibleUseDefTypeSize.java b/test/hotspot/jtreg/compiler/loopopts/superword/TestCompatibleUseDefTypeSize.java
index 7399a1ec411..873533aaba8 100644
--- a/test/hotspot/jtreg/compiler/loopopts/superword/TestCompatibleUseDefTypeSize.java
+++ b/test/hotspot/jtreg/compiler/loopopts/superword/TestCompatibleUseDefTypeSize.java
@@ -514,7 +514,7 @@ public class TestCompatibleUseDefTypeSize {
     // Narrowing
 
     @Test
-    @IR(applyIfCPUFeatureOr = { "avx", "true", "asimd", "true" },
+    @IR(applyIfCPUFeatureOr = { "avx", "true", "asimd", "true", "rvv", "true" },
         applyIfOr = {"AlignVector", "false", "UseCompactObjectHeaders", "false"},
         counts = { IRNode.VECTOR_CAST_I2S, IRNode.VECTOR_SIZE + "min(max_int, max_short)", ">0" })
     public Object[] testIntToShort(int[] ints, short[] res) {
@@ -527,7 +527,7 @@ public class TestCompatibleUseDefTypeSize {
 
 
     @Test
-    @IR(applyIfCPUFeatureOr = { "avx", "true", "asimd", "true" },
+    @IR(applyIfCPUFeatureOr = { "avx", "true", "asimd", "true", "rvv", "true" },
         applyIfOr = {"AlignVector", "false", "UseCompactObjectHeaders", "false"},
         counts = { IRNode.VECTOR_CAST_I2S, IRNode.VECTOR_SIZE + "min(max_int, max_char)", ">0" })
     public Object[] testIntToChar(int[] ints, char[] res) {
@@ -539,7 +539,7 @@ public class TestCompatibleUseDefTypeSize {
     }
 
     @Test
-    @IR(applyIfCPUFeatureOr = { "avx", "true", "asimd", "true" },
+    @IR(applyIfCPUFeatureOr = { "avx", "true", "asimd", "true", "rvv", "true" },
         applyIfOr = {"AlignVector", "false", "UseCompactObjectHeaders", "false"},
         counts = { IRNode.VECTOR_CAST_I2B, IRNode.VECTOR_SIZE + "min(max_int, max_byte)", ">0" })
     public Object[] testIntToByte(int[] ints, byte[] res) {
@@ -551,7 +551,7 @@ public class TestCompatibleUseDefTypeSize {
     }
 
     @Test
-    @IR(applyIfCPUFeatureOr = { "avx", "true", "asimd", "true" },
+    @IR(applyIfCPUFeatureOr = { "avx", "true", "asimd", "true", "rvv", "true" },
         applyIfOr = {"AlignVector", "false", "UseCompactObjectHeaders", "false"},
         counts = { IRNode.VECTOR_CAST_S2B, IRNode.VECTOR_SIZE + "min(max_short, max_byte)", ">0" })
     public Object[] testShortToByte(short[] shorts, byte[] res) {
@@ -575,7 +575,7 @@ public class TestCompatibleUseDefTypeSize {
     }
 
     @Test
-    @IR(applyIfCPUFeatureOr = { "avx", "true", "asimd", "true" },
+    @IR(applyIfCPUFeatureOr = { "avx", "true", "asimd", "true", "rvv", "true" },
         applyIfOr = {"AlignVector", "false", "UseCompactObjectHeaders", "false"},
         counts = { IRNode.VECTOR_CAST_L2S, IRNode.VECTOR_SIZE + "min(max_long, max_short)", ">0" })
     public Object[] testLongToShort(long[] longs, short[] res) {
@@ -587,7 +587,7 @@ public class TestCompatibleUseDefTypeSize {
     }
 
     @Test
-    @IR(applyIfCPUFeatureOr = { "avx", "true", "asimd", "true" },
+    @IR(applyIfCPUFeatureOr = { "avx", "true", "asimd", "true", "rvv", "true" },
         applyIfOr = {"AlignVector", "false", "UseCompactObjectHeaders", "false"},
         counts = { IRNode.VECTOR_CAST_L2S, IRNode.VECTOR_SIZE + "min(max_long, max_char)", ">0" })
     public Object[] testLongToChar(long[] longs, char[] res) {
@@ -599,7 +599,7 @@ public class TestCompatibleUseDefTypeSize {
     }
 
     @Test
-    @IR(applyIfCPUFeatureOr = { "avx", "true", "asimd", "true" },
+    @IR(applyIfCPUFeatureOr = { "avx", "true", "asimd", "true", "rvv", "true" },
         applyIfOr = {"AlignVector", "false", "UseCompactObjectHeaders", "false"},
         counts = { IRNode.VECTOR_CAST_L2I, IRNode.VECTOR_SIZE + "min(max_long, max_int)", ">0" })
     public Object[] testLongToInt(long[] longs, int[] res) {
@@ -611,7 +611,7 @@ public class TestCompatibleUseDefTypeSize {
     }
 
     @Test
-    @IR(applyIfCPUFeatureOr = { "avx", "true", "asimd", "true" },
+    @IR(applyIfCPUFeatureOr = { "avx", "true", "asimd", "true", "rvv", "true" },
         applyIfOr = {"AlignVector", "false", "UseCompactObjectHeaders", "false"},
         counts = { IRNode.STORE_VECTOR, ">0" })
     public Object[] testShortToChar(short[] shorts, char[] res) {
@@ -625,7 +625,7 @@ public class TestCompatibleUseDefTypeSize {
     // Widening
 
     @Test
-    @IR(applyIfCPUFeatureOr = { "avx", "true", "asimd", "true" },
+    @IR(applyIfCPUFeatureOr = { "avx", "true", "asimd", "true", "rvv", "true" },
         applyIfOr = {"AlignVector", "false", "UseCompactObjectHeaders", "false"},
         counts = { IRNode.VECTOR_CAST_S2I, IRNode.VECTOR_SIZE + "min(max_short, max_int)", ">0" })
     public Object[] testShortToInt(short[] shorts, int[] res) {
@@ -637,7 +637,7 @@ public class TestCompatibleUseDefTypeSize {
     }
 
     @Test
-    @IR(applyIfCPUFeatureOr = { "avx", "true", "asimd", "true" },
+    @IR(applyIfCPUFeatureOr = { "avx", "true", "asimd", "true", "rvv", "true" },
         applyIfOr = {"AlignVector", "false", "UseCompactObjectHeaders", "false"},
         counts = { IRNode.VECTOR_CAST_B2I, IRNode.VECTOR_SIZE + "min(max_byte, max_int)", ">0" })
     public Object[] testByteToInt(byte[] bytes, int[] res) {
@@ -649,7 +649,7 @@ public class TestCompatibleUseDefTypeSize {
     }
 
     @Test
-    @IR(applyIfCPUFeatureOr = { "avx", "true", "asimd", "true" },
+    @IR(applyIfCPUFeatureOr = { "avx", "true", "asimd", "true", "rvv", "true" },
         applyIfOr = {"AlignVector", "false", "UseCompactObjectHeaders", "false"},
         counts = { IRNode.VECTOR_CAST_B2S, IRNode.VECTOR_SIZE + "min(max_byte, max_short)", ">0" })
     public Object[] testByteToShort(byte[] bytes, short[] res) {
@@ -661,7 +661,7 @@ public class TestCompatibleUseDefTypeSize {
     }
 
     @Test
-    @IR(applyIfCPUFeatureOr = { "avx", "true", "asimd", "true" },
+    @IR(applyIfCPUFeatureOr = { "avx", "true", "asimd", "true", "rvv", "true" },
         applyIfOr = {"AlignVector", "false", "UseCompactObjectHeaders", "false"},
         counts = { IRNode.VECTOR_CAST_B2S, IRNode.VECTOR_SIZE + "min(max_byte, max_char)", ">0" })
     public Object[] testByteToChar(byte[] bytes, char[] res) {
@@ -685,7 +685,7 @@ public class TestCompatibleUseDefTypeSize {
     }
 
     @Test
-    @IR(applyIfCPUFeatureOr = { "avx", "true", "asimd", "true" },
+    @IR(applyIfCPUFeatureOr = { "avx", "true", "asimd", "true", "rvv", "true" },
         applyIfOr = {"AlignVector", "false", "UseCompactObjectHeaders", "false"},
         counts = { IRNode.VECTOR_CAST_S2L, IRNode.VECTOR_SIZE + "min(max_short, max_long)", ">0" })
     public Object[] testShortToLong(short[] shorts, long[] res) {
@@ -697,7 +697,7 @@ public class TestCompatibleUseDefTypeSize {
     }
 
     @Test
-    @IR(applyIfCPUFeatureOr = { "avx", "true", "asimd", "true" },
+    @IR(applyIfCPUFeatureOr = { "avx", "true", "asimd", "true", "rvv", "true" },
         applyIfOr = {"AlignVector", "false", "UseCompactObjectHeaders", "false"},
         counts = { IRNode.VECTOR_CAST_I2L, IRNode.VECTOR_SIZE + "min(max_int, max_long)", ">0" })
     public Object[] testIntToLong(int[] ints, long[] res) {
diff --git a/test/hotspot/jtreg/compiler/loopopts/superword/TestReductions.java b/test/hotspot/jtreg/compiler/loopopts/superword/TestReductions.java
index e0f44bcdb3b..9d674950499 100644
--- a/test/hotspot/jtreg/compiler/loopopts/superword/TestReductions.java
+++ b/test/hotspot/jtreg/compiler/loopopts/superword/TestReductions.java
@@ -458,7 +458,7 @@ public class TestReductions {
     @IR(counts = {IRNode.LOAD_VECTOR_B, IRNode.VECTOR_SIZE + "min(max_int, max_byte)", "> 0",
                   IRNode.AND_REDUCTION_V, "> 0",
                   IRNode.AND_VI,          "> 0"},
-        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true"},
+        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true", "rvv", "true"},
         applyIf = {"AutoVectorizationOverrideProfitability", "> 0"})
     @IR(failOn = IRNode.LOAD_VECTOR_B,
         applyIf = {"AutoVectorizationOverrideProfitability", "= 0"})
@@ -475,7 +475,7 @@ public class TestReductions {
     @IR(counts = {IRNode.LOAD_VECTOR_B, IRNode.VECTOR_SIZE + "min(max_int, max_byte)", "> 0",
                   IRNode.OR_REDUCTION_V, "> 0",
                   IRNode.OR_VI,          "> 0"},
-        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true"},
+        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true", "rvv", "true"},
         applyIf = {"AutoVectorizationOverrideProfitability", "> 0"})
     @IR(failOn = IRNode.LOAD_VECTOR_B,
         applyIf = {"AutoVectorizationOverrideProfitability", "= 0"})
@@ -492,7 +492,7 @@ public class TestReductions {
     @IR(counts = {IRNode.LOAD_VECTOR_B, IRNode.VECTOR_SIZE + "min(max_int, max_byte)", "> 0",
                   IRNode.XOR_REDUCTION_V, "> 0",
                   IRNode.XOR_VI,          "> 0"},
-        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true"},
+        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true", "rvv", "true"},
         applyIf = {"AutoVectorizationOverrideProfitability", "> 0"})
     @IR(failOn = IRNode.LOAD_VECTOR_B,
         applyIf = {"AutoVectorizationOverrideProfitability", "= 0"})
@@ -531,7 +531,7 @@ public class TestReductions {
     @IR(counts = {IRNode.LOAD_VECTOR_B, IRNode.VECTOR_SIZE + "min(max_int, max_byte)", "> 0",
                   IRNode.MIN_REDUCTION_V, "> 0",
                   IRNode.MIN_VI,          "> 0"},
-        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true"},
+        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true", "rvv", "true"},
         applyIf = {"AutoVectorizationOverrideProfitability", "> 0"})
     @IR(failOn = IRNode.LOAD_VECTOR_B,
         applyIf = {"AutoVectorizationOverrideProfitability", "= 0"})
@@ -548,7 +548,7 @@ public class TestReductions {
     @IR(counts = {IRNode.LOAD_VECTOR_B, IRNode.VECTOR_SIZE + "min(max_int, max_byte)", "> 0",
                   IRNode.MAX_REDUCTION_V, "> 0",
                   IRNode.MAX_VI,          "> 0"},
-        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true"},
+        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true", "rvv", "true"},
         applyIf = {"AutoVectorizationOverrideProfitability", "> 0"})
     @IR(failOn = IRNode.LOAD_VECTOR_B,
         applyIf = {"AutoVectorizationOverrideProfitability", "= 0"})
@@ -566,7 +566,7 @@ public class TestReductions {
     @IR(counts = {IRNode.LOAD_VECTOR_B, IRNode.VECTOR_SIZE + "min(max_int, max_byte)", "> 0",
                   IRNode.AND_REDUCTION_V, "> 0",
                   IRNode.AND_VI,          "> 0"},
-        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true"},
+        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true", "rvv", "true"},
         applyIf = {"AutoVectorizationOverrideProfitability", "> 0"})
     @IR(failOn = IRNode.LOAD_VECTOR_B,
         applyIf = {"AutoVectorizationOverrideProfitability", "= 0"})
@@ -583,7 +583,7 @@ public class TestReductions {
     @IR(counts = {IRNode.LOAD_VECTOR_B, IRNode.VECTOR_SIZE + "min(max_int, max_byte)", "> 0",
                   IRNode.OR_REDUCTION_V, "> 0",
                   IRNode.OR_VI,          "> 0"},
-        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true"},
+        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true", "rvv", "true"},
         applyIf = {"AutoVectorizationOverrideProfitability", "> 0"})
     @IR(failOn = IRNode.LOAD_VECTOR_B,
         applyIf = {"AutoVectorizationOverrideProfitability", "= 0"})
@@ -600,7 +600,7 @@ public class TestReductions {
     @IR(counts = {IRNode.LOAD_VECTOR_B, IRNode.VECTOR_SIZE + "min(max_int, max_byte)", "> 0",
                   IRNode.XOR_REDUCTION_V, "> 0",
                   IRNode.XOR_VI,          "> 0"},
-        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true"},
+        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true", "rvv", "true"},
         applyIf = {"AutoVectorizationOverrideProfitability", "> 0"})
     @IR(failOn = IRNode.LOAD_VECTOR_B,
         applyIf = {"AutoVectorizationOverrideProfitability", "= 0"})
@@ -639,7 +639,7 @@ public class TestReductions {
     @IR(counts = {IRNode.LOAD_VECTOR_B, IRNode.VECTOR_SIZE + "min(max_int, max_byte)", "> 0",
                   IRNode.MIN_REDUCTION_V, "> 0",
                   IRNode.MIN_VI,          "> 0"},
-        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true"},
+        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true", "rvv", "true"},
         applyIf = {"AutoVectorizationOverrideProfitability", "> 0"})
     @IR(failOn = IRNode.LOAD_VECTOR_B,
         applyIf = {"AutoVectorizationOverrideProfitability", "= 0"})
@@ -656,7 +656,7 @@ public class TestReductions {
     @IR(counts = {IRNode.LOAD_VECTOR_B, IRNode.VECTOR_SIZE + "min(max_int, max_byte)", "> 0",
                   IRNode.MAX_REDUCTION_V, "> 0",
                   IRNode.MAX_VI,          "> 0"},
-        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true"},
+        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true", "rvv", "true"},
         applyIf = {"AutoVectorizationOverrideProfitability", "> 0"})
     @IR(failOn = IRNode.LOAD_VECTOR_B,
         applyIf = {"AutoVectorizationOverrideProfitability", "= 0"})
@@ -674,7 +674,7 @@ public class TestReductions {
     @IR(counts = {IRNode.LOAD_VECTOR_B, IRNode.VECTOR_SIZE + "min(max_int, max_byte)", "> 0",
                   IRNode.AND_REDUCTION_V, "> 0",
                   IRNode.AND_VI,          "> 0"},
-        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true"},
+        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true", "rvv", "true"},
         applyIf = {"AutoVectorizationOverrideProfitability", "> 0"})
     @IR(failOn = IRNode.LOAD_VECTOR_B,
         applyIf = {"AutoVectorizationOverrideProfitability", "= 0"})
@@ -691,7 +691,7 @@ public class TestReductions {
     @IR(counts = {IRNode.LOAD_VECTOR_B, IRNode.VECTOR_SIZE + "min(max_int, max_byte)", "> 0",
                   IRNode.OR_REDUCTION_V, "> 0",
                   IRNode.OR_VI,          "> 0"},
-        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true"},
+        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true", "rvv", "true"},
         applyIf = {"AutoVectorizationOverrideProfitability", "> 0"})
     @IR(failOn = IRNode.LOAD_VECTOR_B,
         applyIf = {"AutoVectorizationOverrideProfitability", "= 0"})
@@ -708,7 +708,7 @@ public class TestReductions {
     @IR(counts = {IRNode.LOAD_VECTOR_B, IRNode.VECTOR_SIZE + "min(max_int, max_byte)", "> 0",
                   IRNode.XOR_REDUCTION_V, "> 0",
                   IRNode.XOR_VI,          "> 0"},
-        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true"},
+        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true", "rvv", "true"},
         applyIf = {"AutoVectorizationOverrideProfitability", "> 0"})
     @IR(failOn = IRNode.LOAD_VECTOR_B,
         applyIf = {"AutoVectorizationOverrideProfitability", "= 0"})
@@ -747,7 +747,7 @@ public class TestReductions {
     @IR(counts = {IRNode.LOAD_VECTOR_B, IRNode.VECTOR_SIZE + "min(max_int, max_byte)", "> 0",
                   IRNode.MIN_REDUCTION_V, "> 0",
                   IRNode.MIN_VI,          "> 0"},
-        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true"},
+        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true", "rvv", "true"},
         applyIf = {"AutoVectorizationOverrideProfitability", "> 0"})
     @IR(failOn = IRNode.LOAD_VECTOR_B,
         applyIf = {"AutoVectorizationOverrideProfitability", "= 0"})
@@ -764,7 +764,7 @@ public class TestReductions {
     @IR(counts = {IRNode.LOAD_VECTOR_B, IRNode.VECTOR_SIZE + "min(max_int, max_byte)", "> 0",
                   IRNode.MAX_REDUCTION_V, "> 0",
                   IRNode.MAX_VI,          "> 0"},
-        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true"},
+        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true", "rvv", "true"},
         applyIf = {"AutoVectorizationOverrideProfitability", "> 0"})
     @IR(failOn = IRNode.LOAD_VECTOR_B,
         applyIf = {"AutoVectorizationOverrideProfitability", "= 0"})
@@ -1016,7 +1016,7 @@ public class TestReductions {
     @IR(counts = {IRNode.LOAD_VECTOR_S, IRNode.VECTOR_SIZE + "min(max_int, max_short)", "> 0",
                   IRNode.AND_REDUCTION_V, "> 0",
                   IRNode.AND_VI,          "> 0"},
-        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true"},
+        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true", "rvv", "true"},
         applyIf = {"AutoVectorizationOverrideProfitability", "> 0"})
     @IR(failOn = IRNode.LOAD_VECTOR_S,
         applyIf = {"AutoVectorizationOverrideProfitability", "= 0"})
@@ -1033,7 +1033,7 @@ public class TestReductions {
     @IR(counts = {IRNode.LOAD_VECTOR_S, IRNode.VECTOR_SIZE + "min(max_int, max_short)", "> 0",
                   IRNode.OR_REDUCTION_V, "> 0",
                   IRNode.OR_VI,          "> 0"},
-        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true"},
+        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true", "rvv", "true"},
         applyIf = {"AutoVectorizationOverrideProfitability", "> 0"})
     @IR(failOn = IRNode.LOAD_VECTOR_S,
         applyIf = {"AutoVectorizationOverrideProfitability", "= 0"})
@@ -1050,7 +1050,7 @@ public class TestReductions {
     @IR(counts = {IRNode.LOAD_VECTOR_S, IRNode.VECTOR_SIZE + "min(max_int, max_short)", "> 0",
                   IRNode.XOR_REDUCTION_V, "> 0",
                   IRNode.XOR_VI,          "> 0"},
-        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true"},
+        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true", "rvv", "true"},
         applyIf = {"AutoVectorizationOverrideProfitability", "> 0"})
     @IR(failOn = IRNode.LOAD_VECTOR_S,
         applyIf = {"AutoVectorizationOverrideProfitability", "= 0"})
@@ -1089,7 +1089,7 @@ public class TestReductions {
     @IR(counts = {IRNode.LOAD_VECTOR_S, IRNode.VECTOR_SIZE + "min(max_int, max_short)", "> 0",
                   IRNode.MIN_REDUCTION_V, "> 0",
                   IRNode.MIN_VI,          "> 0"},
-        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true"},
+        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true", "rvv", "true"},
         applyIf = {"AutoVectorizationOverrideProfitability", "> 0"})
     @IR(failOn = IRNode.LOAD_VECTOR_S,
         applyIf = {"AutoVectorizationOverrideProfitability", "= 0"})
@@ -1106,7 +1106,7 @@ public class TestReductions {
     @IR(counts = {IRNode.LOAD_VECTOR_S, IRNode.VECTOR_SIZE + "min(max_int, max_short)", "> 0",
                   IRNode.MAX_REDUCTION_V, "> 0",
                   IRNode.MAX_VI,          "> 0"},
-        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true"},
+        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true", "rvv", "true"},
         applyIf = {"AutoVectorizationOverrideProfitability", "> 0"})
     @IR(failOn = IRNode.LOAD_VECTOR_S,
         applyIf = {"AutoVectorizationOverrideProfitability", "= 0"})
@@ -1124,7 +1124,7 @@ public class TestReductions {
     @IR(counts = {IRNode.LOAD_VECTOR_S, IRNode.VECTOR_SIZE + "min(max_int, max_short)", "> 0",
                   IRNode.AND_REDUCTION_V, "> 0",
                   IRNode.AND_VI,          "> 0"},
-        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true"},
+        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true", "rvv", "true"},
         applyIf = {"AutoVectorizationOverrideProfitability", "> 0"})
     @IR(failOn = IRNode.LOAD_VECTOR_S,
         applyIf = {"AutoVectorizationOverrideProfitability", "= 0"})
@@ -1141,7 +1141,7 @@ public class TestReductions {
     @IR(counts = {IRNode.LOAD_VECTOR_S, IRNode.VECTOR_SIZE + "min(max_int, max_short)", "> 0",
                   IRNode.OR_REDUCTION_V, "> 0",
                   IRNode.OR_VI,          "> 0"},
-        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true"},
+        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true", "rvv", "true"},
         applyIf = {"AutoVectorizationOverrideProfitability", "> 0"})
     @IR(failOn = IRNode.LOAD_VECTOR_S,
         applyIf = {"AutoVectorizationOverrideProfitability", "= 0"})
@@ -1158,7 +1158,7 @@ public class TestReductions {
     @IR(counts = {IRNode.LOAD_VECTOR_S, IRNode.VECTOR_SIZE + "min(max_int, max_short)", "> 0",
                   IRNode.XOR_REDUCTION_V, "> 0",
                   IRNode.XOR_VI,          "> 0"},
-        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true"},
+        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true", "rvv", "true"},
         applyIf = {"AutoVectorizationOverrideProfitability", "> 0"})
     @IR(failOn = IRNode.LOAD_VECTOR_S,
         applyIf = {"AutoVectorizationOverrideProfitability", "= 0"})
@@ -1197,7 +1197,7 @@ public class TestReductions {
     @IR(counts = {IRNode.LOAD_VECTOR_S, IRNode.VECTOR_SIZE + "min(max_int, max_short)", "> 0",
                   IRNode.MIN_REDUCTION_V, "> 0",
                   IRNode.MIN_VI,          "> 0"},
-        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true"},
+        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true", "rvv", "true"},
         applyIf = {"AutoVectorizationOverrideProfitability", "> 0"})
     @IR(failOn = IRNode.LOAD_VECTOR_S,
         applyIf = {"AutoVectorizationOverrideProfitability", "= 0"})
@@ -1214,7 +1214,7 @@ public class TestReductions {
     @IR(counts = {IRNode.LOAD_VECTOR_S, IRNode.VECTOR_SIZE + "min(max_int, max_short)", "> 0",
                   IRNode.MAX_REDUCTION_V, "> 0",
                   IRNode.MAX_VI,          "> 0"},
-        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true"},
+        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true", "rvv", "true"},
         applyIf = {"AutoVectorizationOverrideProfitability", "> 0"})
     @IR(failOn = IRNode.LOAD_VECTOR_S,
         applyIf = {"AutoVectorizationOverrideProfitability", "= 0"})
@@ -1232,7 +1232,7 @@ public class TestReductions {
     @IR(counts = {IRNode.LOAD_VECTOR_S, IRNode.VECTOR_SIZE + "min(max_int, max_short)", "> 0",
                   IRNode.AND_REDUCTION_V, "> 0",
                   IRNode.AND_VI,          "> 0"},
-        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true"},
+        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true", "rvv", "true"},
         applyIf = {"AutoVectorizationOverrideProfitability", "> 0"})
     @IR(failOn = IRNode.LOAD_VECTOR_S,
         applyIf = {"AutoVectorizationOverrideProfitability", "= 0"})
@@ -1249,7 +1249,7 @@ public class TestReductions {
     @IR(counts = {IRNode.LOAD_VECTOR_S, IRNode.VECTOR_SIZE + "min(max_int, max_short)", "> 0",
                   IRNode.OR_REDUCTION_V, "> 0",
                   IRNode.OR_VI,          "> 0"},
-        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true"},
+        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true", "rvv", "true"},
         applyIf = {"AutoVectorizationOverrideProfitability", "> 0"})
     @IR(failOn = IRNode.LOAD_VECTOR_S,
         applyIf = {"AutoVectorizationOverrideProfitability", "= 0"})
@@ -1266,7 +1266,7 @@ public class TestReductions {
     @IR(counts = {IRNode.LOAD_VECTOR_S, IRNode.VECTOR_SIZE + "min(max_int, max_short)", "> 0",
                   IRNode.XOR_REDUCTION_V, "> 0",
                   IRNode.XOR_VI,          "> 0"},
-        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true"},
+        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true", "rvv", "true"},
         applyIf = {"AutoVectorizationOverrideProfitability", "> 0"})
     @IR(failOn = IRNode.LOAD_VECTOR_S,
         applyIf = {"AutoVectorizationOverrideProfitability", "= 0"})
@@ -1305,7 +1305,7 @@ public class TestReductions {
     @IR(counts = {IRNode.LOAD_VECTOR_S, IRNode.VECTOR_SIZE + "min(max_int, max_short)", "> 0",
                   IRNode.MIN_REDUCTION_V, "> 0",
                   IRNode.MIN_VI,          "> 0"},
-        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true"},
+        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true", "rvv", "true"},
         applyIf = {"AutoVectorizationOverrideProfitability", "> 0"})
     @IR(failOn = IRNode.LOAD_VECTOR_S,
         applyIf = {"AutoVectorizationOverrideProfitability", "= 0"})
@@ -1322,7 +1322,7 @@ public class TestReductions {
     @IR(counts = {IRNode.LOAD_VECTOR_S, IRNode.VECTOR_SIZE + "min(max_int, max_short)", "> 0",
                   IRNode.MAX_REDUCTION_V, "> 0",
                   IRNode.MAX_VI,          "> 0"},
-        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true"},
+        applyIfCPUFeatureOr = {"avx", "true", "asimd", "true", "rvv", "true"},
         applyIf = {"AutoVectorizationOverrideProfitability", "> 0"})
     @IR(failOn = IRNode.LOAD_VECTOR_S,
         applyIf = {"AutoVectorizationOverrideProfitability", "= 0"})
diff --git a/test/hotspot/jtreg/compiler/vectorapi/TestVectorLibraryUnaryOpAndBinaryOp.java b/test/hotspot/jtreg/compiler/vectorapi/TestVectorLibraryUnaryOpAndBinaryOp.java
new file mode 100644
index 00000000000..f7837e1abfa
--- /dev/null
+++ b/test/hotspot/jtreg/compiler/vectorapi/TestVectorLibraryUnaryOpAndBinaryOp.java
@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 2026, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2026, NTT DATA
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package compiler.vectorapi;
+
+import compiler.lib.ir_framework.*;
+import jdk.incubator.vector.*;
+
+/**
+ * @test
+ * @bug 8378312
+ * @library /test/lib /
+ * @summary VectorAPI: libraryUnaryOp and libraryBinaryOp should be intrinsified.
+ * @modules jdk.incubator.vector
+ *
+ * @run driver compiler.vectorapi.TestVectorLibraryUnaryOpAndBinaryOp
+ */
+
+public class TestVectorLibraryUnaryOpAndBinaryOp {
+
+    @Test
+    @IR(counts = { IRNode.CALL_LEAF_VECTOR, "= 1" }, applyIfCPUFeatureOr = { "asimd", "true", "avx", "true" })
+    public static void testUnary() {
+        var vec = FloatVector.broadcast(FloatVector.SPECIES_128, 3.14f);
+        vec.lanewise(VectorOperators.COS);
+    }
+
+    @Test
+    @IR(counts = { IRNode.CALL_LEAF_VECTOR, "= 1" }, applyIfCPUFeatureOr = { "asimd", "true", "avx", "true" })
+    public static void testBinary() {
+        var vec = FloatVector.broadcast(FloatVector.SPECIES_128, 2.0f);
+        vec.lanewise(VectorOperators.HYPOT, 1.0f);
+    }
+
+    public static void main(String[] args) {
+        TestFramework testFramework = new TestFramework();
+        testFramework.addFlags("--add-modules=jdk.incubator.vector")
+                     .start();
+    }
+
+}
diff --git a/test/hotspot/jtreg/compiler/vectorization/TestSubwordTruncation.java b/test/hotspot/jtreg/compiler/vectorization/TestSubwordTruncation.java
index 29331cc1845..2f6296e41d2 100644
--- a/test/hotspot/jtreg/compiler/vectorization/TestSubwordTruncation.java
+++ b/test/hotspot/jtreg/compiler/vectorization/TestSubwordTruncation.java
@@ -74,7 +74,7 @@ public class TestSubwordTruncation {
 
     @Test
     @IR(counts = { IRNode.LOAD_VECTOR_S, IRNode.VECTOR_SIZE + "min(max_int, max_short)", "> 0" },
-        applyIfCPUFeatureOr = { "avx2", "true", "asimd", "true" })
+        applyIfCPUFeatureOr = { "avx2", "true", "asimd", "true", "zvbb", "true" })
     @Arguments(setup = "setupShortArray")
     public Object[] testShortLeadingZeros(short[] in) {
         short[] res = new short[SIZE];
@@ -100,7 +100,7 @@ public class TestSubwordTruncation {
 
     @Test
     @IR(counts = { IRNode.LOAD_VECTOR_S, IRNode.VECTOR_SIZE + "min(max_int, max_short)", "> 0" },
-        applyIfCPUFeatureOr = { "avx2", "true", "asimd", "true" })
+        applyIfCPUFeatureOr = { "avx2", "true", "asimd", "true", "zvbb", "true" })
     @Arguments(setup = "setupShortArray")
     public Object[] testShortTrailingZeros(short[] in) {
         short[] res = new short[SIZE];
@@ -126,7 +126,7 @@ public class TestSubwordTruncation {
 
     @Test
     @IR(counts = { IRNode.LOAD_VECTOR_S, IRNode.VECTOR_SIZE + "min(max_int, max_short)", "> 0" },
-        applyIfCPUFeatureOr = { "avx2", "true", "asimd", "true" })
+        applyIfCPUFeatureOr = { "avx2", "true", "asimd", "true", "zvbb", "true" })
     @Arguments(setup = "setupShortArray")
     public Object[] testShortReverse(short[] in) {
         short[] res = new short[SIZE];
@@ -152,7 +152,7 @@ public class TestSubwordTruncation {
 
     @Test
     @IR(counts = { IRNode.LOAD_VECTOR_S, IRNode.VECTOR_SIZE + "min(max_int, max_short)", "> 0" },
-        applyIfCPUFeatureOr = { "avx2", "true", "asimd", "true" })
+        applyIfCPUFeatureOr = { "avx2", "true", "asimd", "true", "zvbb", "true" })
     @Arguments(setup = "setupShortArray")
     public Object[] testShortBitCount(short[] in) {
         short[] res = new short[SIZE];
@@ -282,7 +282,7 @@ public class TestSubwordTruncation {
 
     @Test
     @IR(counts = { IRNode.LOAD_VECTOR_B, IRNode.VECTOR_SIZE + "min(max_int, max_byte)", "> 0" },
-        applyIfCPUFeatureOr = { "avx2", "true", "asimd", "true" })
+        applyIfCPUFeatureOr = { "avx2", "true", "asimd", "true", "zvbb", "true" })
     @Arguments(setup = "setupByteArray")
     public Object[] testByteLeadingZeros(byte[] in) {
         byte[] res = new byte[SIZE];
@@ -308,7 +308,7 @@ public class TestSubwordTruncation {
 
     @Test
     @IR(counts = { IRNode.LOAD_VECTOR_B, IRNode.VECTOR_SIZE + "min(max_int, max_byte)", "> 0" },
-        applyIfCPUFeatureOr = { "avx2", "true", "asimd", "true" })
+        applyIfCPUFeatureOr = { "avx2", "true", "asimd", "true", "zvbb", "true" })
     @Arguments(setup = "setupByteArray")
     public Object[] testByteTrailingZeros(byte[] in) {
         byte[] res = new byte[SIZE];
@@ -334,7 +334,7 @@ public class TestSubwordTruncation {
 
     @Test
     @IR(counts = { IRNode.LOAD_VECTOR_B, IRNode.VECTOR_SIZE + "min(max_int, max_byte)", "> 0" },
-        applyIfCPUFeatureOr = { "avx2", "true", "asimd", "true" })
+        applyIfCPUFeatureOr = { "avx2", "true", "asimd", "true", "zvbb", "true" })
     @Arguments(setup = "setupByteArray")
     public Object[] testByteReverse(byte[] in) {
         byte[] res = new byte[SIZE];
@@ -411,7 +411,7 @@ public class TestSubwordTruncation {
 
     @Test
     @IR(counts = { IRNode.LOAD_VECTOR_B, IRNode.VECTOR_SIZE + "min(max_int, max_byte)", "> 0" },
-        applyIfCPUFeatureOr = { "avx2", "true", "asimd", "true" })
+        applyIfCPUFeatureOr = { "avx2", "true", "asimd", "true", "zvbb", "true" })
     @Arguments(setup = "setupByteArray")
     public Object[] testByteBitCount(byte[] in) {
         byte[] res = new byte[SIZE];
diff --git a/test/hotspot/jtreg/gc/shenandoah/compiler/TestLinkToNativeRBP.java b/test/hotspot/jtreg/gc/shenandoah/compiler/TestLinkToNativeRBP.java
index 96440ba15ae..2877e8a4a85 100644
--- a/test/hotspot/jtreg/gc/shenandoah/compiler/TestLinkToNativeRBP.java
+++ b/test/hotspot/jtreg/gc/shenandoah/compiler/TestLinkToNativeRBP.java
@@ -30,7 +30,7 @@
  * @requires ((os.arch == "amd64" | os.arch == "x86_64") & sun.arch.data.model == "64") | os.arch == "aarch64" | os.arch == "ppc64" | os.arch == "ppc64le"
  * @requires vm.gc.Shenandoah
  *
- * @run main/othervm --enable-native-access=ALL-UNNAMED -XX:+UnlockDiagnosticVMOptions
+ * @run main/native/othervm --enable-native-access=ALL-UNNAMED -XX:+UnlockDiagnosticVMOptions
  *                   -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive TestLinkToNativeRBP
  *
  */
diff --git a/test/hotspot/jtreg/runtime/cds/appcds/TestZGCWithCDS.java b/test/hotspot/jtreg/runtime/cds/appcds/TestZGCWithCDS.java
index 7c0b5896a98..eb42bb9f93d 100644
--- a/test/hotspot/jtreg/runtime/cds/appcds/TestZGCWithCDS.java
+++ b/test/hotspot/jtreg/runtime/cds/appcds/TestZGCWithCDS.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2020, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -22,7 +22,7 @@
  */
 
 /*
- * @test
+ * @test id=COH
  * @bug 8232069
  * @requires vm.cds
  * @requires vm.bits == 64
@@ -31,7 +31,32 @@
  * @requires vm.gc == null
  * @library /test/lib /test/hotspot/jtreg/runtime/cds/appcds
  * @compile test-classes/Hello.java
- * @run driver TestZGCWithCDS
+ * @comment Only run if COH is unset or enabled.
+ * @requires vm.opt.UseCompactObjectHeaders != "false"
+ * @comment Driver sets compressed oops/class pointers, jtreg overrides will cause problems.
+            Only run the test if the flags are not set via the command line.
+ * @requires vm.opt.UseCompressedOops == null
+ * @requires vm.opt.UseCompressedClassPointers == null
+ * @run driver TestZGCWithCDS true
+ */
+
+/*
+ * @test id=NO-COH
+ * @bug 8232069
+ * @requires vm.cds
+ * @requires vm.bits == 64
+ * @requires vm.gc.Z
+ * @requires vm.gc.Serial
+ * @requires vm.gc == null
+ * @library /test/lib /test/hotspot/jtreg/runtime/cds/appcds
+ * @compile test-classes/Hello.java
+ * @comment Only run if COH is unset or disabled.
+ * @requires vm.opt.UseCompactObjectHeaders != "true"
+ * @comment Driver sets compressed oops/class pointers, jtreg overrides will cause problems.
+            Only run the test if the flags are not set via the command line.
+ * @requires vm.opt.UseCompressedOops == null
+ * @requires vm.opt.UseCompressedClassPointers == null
+ * @run driver TestZGCWithCDS false
  */
 
 import jdk.test.lib.Platform;
@@ -42,7 +67,8 @@ public class TestZGCWithCDS {
     public final static String UNABLE_TO_USE_ARCHIVE = "Unable to use shared archive.";
     public final static String ERR_MSG = "The saved state of UseCompressedOops and UseCompressedClassPointers is different from runtime, CDS will be disabled.";
     public static void main(String... args) throws Exception {
-         String compactHeaders = "-XX:+UseCompactObjectHeaders";
+         boolean compactHeadersOn = Boolean.valueOf(args[0]);
+         String compactHeaders = "-XX:" + (compactHeadersOn ? "+" : "-") + "UseCompactObjectHeaders";
          String helloJar = JarBuilder.build("hello", "Hello");
          System.out.println("0. Dump with ZGC");
          OutputAnalyzer out = TestCommon
diff --git a/test/jdk/com/sun/jdi/EATests.java b/test/jdk/com/sun/jdi/EATests.java
index cb51e91021b..3a936f288cc 100644
--- a/test/jdk/com/sun/jdi/EATests.java
+++ b/test/jdk/com/sun/jdi/EATests.java
@@ -84,6 +84,15 @@
  * @comment Regression test for using the wrong thread when logging during re-locking from deoptimization.
  *
  * @comment DiagnoseSyncOnValueBasedClasses=2 will cause logging when locking on \@ValueBased objects.
+ * @run driver EATests
+ *                 -XX:+UnlockDiagnosticVMOptions
+ *                 -Xms256m -Xmx256m
+ *                 -Xbootclasspath/a:.
+ *                 -XX:CompileCommand=dontinline,*::dontinline_*
+ *                 -XX:+WhiteBoxAPI
+ *                 -Xbatch
+ *                 -XX:+DoEscapeAnalysis -XX:+EliminateAllocations -XX:+EliminateLocks -XX:+EliminateNestedLocks
+ *                 -XX:DiagnoseSyncOnValueBasedClasses=2
  *
  * @comment Re-lock may inflate monitors when re-locking, which cause monitorinflation trace logging.
  * @run driver EATests
diff --git a/test/jdk/java/awt/Dialog/CloseDialog/CloseDialogTest.java b/test/jdk/java/awt/Dialog/CloseDialog/CloseDialogTest.java
deleted file mode 100644
index 1201e5c835c..00000000000
--- a/test/jdk/java/awt/Dialog/CloseDialog/CloseDialogTest.java
+++ /dev/null
@@ -1,119 +0,0 @@
-/*
- * Copyright (c) 2014, 2025, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-import java.awt.Dialog;
-import java.awt.Frame;
-import java.io.*;
-import javax.swing.*;
-import sun.awt.SunToolkit;
-import java.util.concurrent.atomic.AtomicReference;
-
-/**
- * @test
- * @key headful
- * @bug 8043705
- * @summary Can't exit color chooser dialog when running in non-default AppContext
- * @modules java.desktop/sun.awt
- * @run main CloseDialogTest
- */
-
-public class CloseDialogTest {
-
-    private static volatile Frame frame;
-    private static volatile Dialog dialog;
-    private static volatile InputStream testErrorStream;
-    private static final PrintStream systemErrStream = System.err;
-    private static final AtomicReference<Exception> caughtException
-            = new AtomicReference<>();
-
-    public static void main(String[] args) throws Exception {
-
-        // redirect System err
-        PipedOutputStream errorOutputStream = new PipedOutputStream();
-        testErrorStream = new PipedInputStream(errorOutputStream);
-        System.setErr(new PrintStream(errorOutputStream));
-
-        ThreadGroup swingTG = new ThreadGroup(getRootThreadGroup(), "SwingTG");
-        try {
-            new Thread(swingTG, () -> {
-                SunToolkit.createNewAppContext();
-                SwingUtilities.invokeLater(() -> {
-                    frame = new Frame();
-                    frame.setSize(300, 300);
-                    frame.setVisible(true);
-
-                    dialog = new Dialog(frame);
-                    dialog.setSize(200, 200);
-                    dialog.setModal(true);
-                    dialog.setVisible(true);
-                });
-            }).start();
-
-            Thread.sleep(400);
-
-            Thread disposeThread = new Thread(swingTG, () ->
-                    SwingUtilities.invokeLater(() -> {
-                try {
-                    while (dialog == null || !dialog.isVisible()) {
-                        Thread.sleep(100);
-                    }
-                    dialog.setVisible(false);
-                    dialog.dispose();
-                    frame.dispose();
-                } catch (Exception e) {
-                    caughtException.set(e);
-                }
-            }));
-            disposeThread.start();
-            disposeThread.join();
-            Thread.sleep(500);
-
-            // read System err
-            final char[] buffer = new char[2048];
-            System.err.print("END");
-            System.setErr(systemErrStream);
-            try (Reader in = new InputStreamReader(testErrorStream, "UTF-8")) {
-                int size = in.read(buffer, 0, buffer.length);
-                String errorString = new String(buffer, 0, size);
-                if (!errorString.startsWith("END")) {
-                    System.err.println(errorString.
-                            substring(0, errorString.length() - 4));
-                    throw new RuntimeException("Error output is not empty!");
-                }
-            }
-        } finally {
-            if (caughtException.get() != null) {
-                throw new RuntimeException("Failed. Caught exception!",
-                        caughtException.get());
-            }
-        }
-    }
-
-    private static ThreadGroup getRootThreadGroup() {
-        ThreadGroup threadGroup = Thread.currentThread().getThreadGroup();
-        while (threadGroup.getParent() != null) {
-            threadGroup = threadGroup.getParent();
-        }
-        return threadGroup;
-    }
-}
diff --git a/test/jdk/java/awt/Toolkit/DisplayChangesException/DisplayChangesException.java b/test/jdk/java/awt/Toolkit/DisplayChangesException/DisplayChangesException.java
deleted file mode 100644
index 0f13265ac58..00000000000
--- a/test/jdk/java/awt/Toolkit/DisplayChangesException/DisplayChangesException.java
+++ /dev/null
@@ -1,133 +0,0 @@
-/*
- * Copyright (c) 2018, 2020, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-import java.awt.EventQueue;
-import java.awt.GraphicsEnvironment;
-import java.awt.Toolkit;
-import java.lang.reflect.Method;
-import java.util.concurrent.CountDownLatch;
-
-import javax.swing.JButton;
-import javax.swing.JFrame;
-
-import sun.awt.DisplayChangedListener;
-import sun.awt.SunToolkit;
-
-/**
- * @test
- * @key headful
- * @bug 8207070
- * @modules java.desktop/sun.java2d
- *          java.desktop/sun.awt
- *          java.desktop/sun.awt.windows:open
- */
-public final class DisplayChangesException {
-
-    private static boolean fail;
-    private static CountDownLatch go = new CountDownLatch(1);
-
-    static final class TestThread extends Thread {
-
-        private JFrame frame;
-
-        private TestThread(ThreadGroup tg, String threadName) {
-            super(tg, threadName);
-        }
-
-        public void run() {
-            try {
-                test();
-            } catch (final Exception e) {
-                throw new RuntimeException(e);
-            }
-        }
-
-        private void test() throws Exception {
-            SunToolkit.createNewAppContext();
-            EventQueue.invokeAndWait(() -> {
-                frame = new JFrame();
-                final JButton b = new JButton();
-                b.addPropertyChangeListener(evt -> {
-                    if (!SunToolkit.isDispatchThreadForAppContext(b)) {
-                        System.err.println("Wrong thread:" + currentThread());
-                        fail = true;
-                    }
-                });
-                frame.add(b);
-                frame.setSize(100, 100);
-                frame.setLocationRelativeTo(null);
-                frame.pack();
-            });
-            go.await();
-            EventQueue.invokeAndWait(() -> {
-                frame.dispose();
-            });
-        }
-    }
-
-    public static void main(final String[] args) throws Exception {
-        ThreadGroup tg0 = new ThreadGroup("ThreadGroup0");
-        ThreadGroup tg1 = new ThreadGroup("ThreadGroup1");
-
-        TestThread t0 = new TestThread(tg0, "TestThread 0");
-        TestThread t1 = new TestThread(tg1, "TestThread 1");
-
-        t0.start();
-        t1.start();
-        Thread.sleep(1500); // Cannot use Robot.waitForIdle
-        testToolkit();
-        Thread.sleep(1500);
-        testGE();
-        Thread.sleep(1500);
-        go.countDown();
-
-        if (fail) {
-            throw new RuntimeException();
-        }
-    }
-
-    private static void testGE() {
-        Object ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
-        if (!(ge instanceof DisplayChangedListener)) {
-            return;
-        }
-        ((DisplayChangedListener) ge).displayChanged();
-    }
-
-    private static void testToolkit() {
-        final Class toolkit;
-        try {
-            toolkit = Class.forName("sun.awt.windows.WToolkit");
-        } catch (final ClassNotFoundException ignored) {
-            return;
-        }
-        try {
-            final Method displayChanged = toolkit.getMethod("displayChanged");
-            displayChanged.invoke(Toolkit.getDefaultToolkit());
-        } catch (final Exception e) {
-            e.printStackTrace();
-            fail = true;
-        }
-    }
-}
-
diff --git a/test/jdk/java/awt/font/GlyphVector/GlyphMetricsRotatedFontTest.java b/test/jdk/java/awt/font/GlyphVector/GlyphMetricsRotatedFontTest.java
new file mode 100644
index 00000000000..eb00fd4f34d
--- /dev/null
+++ b/test/jdk/java/awt/font/GlyphVector/GlyphMetricsRotatedFontTest.java
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2026, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8148334 8377937
+ * @summary Checks behavior of GlyphVector.getGlyphMetrics(int) with rotated fonts.
+ */
+
+import java.awt.Font;
+import java.awt.GraphicsEnvironment;
+import java.awt.font.FontRenderContext;
+import java.awt.font.GlyphMetrics;
+import java.awt.font.GlyphVector;
+import java.awt.geom.AffineTransform;
+
+public class GlyphMetricsRotatedFontTest {
+
+    public static void main(String[] args) {
+
+        String text = "The quick brown \r\n fox JUMPS over \t the lazy dog.";
+        FontRenderContext frc = new FontRenderContext(null, true, true);
+
+        GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
+        String[] names = ge.getAvailableFontFamilyNames();
+
+        for (String name : names) {
+
+            Font normal = new Font(name, Font.PLAIN, 60);
+            if (normal.canDisplayUpTo("AZaz09") != -1) {
+                continue;
+            }
+
+            double theta = 0.5; // about 30 degrees
+            AffineTransform tx = AffineTransform.getRotateInstance(theta);
+            Font rotated = normal.deriveFont(tx);
+
+            GlyphVector gv1 = normal.createGlyphVector(frc, text);
+            GlyphVector gv2 = rotated.createGlyphVector(frc, text);
+
+            for (int i = 0; i < gv1.getNumGlyphs(); i++) {
+                GlyphMetrics gm1 = gv1.getGlyphMetrics(i);
+                GlyphMetrics gm2 = gv2.getGlyphMetrics(i);
+                assertEqual(0, gm1.getAdvanceY(), 0, name + " normal y", i);
+                double expectedX = Math.cos(theta) * gm1.getAdvanceX();
+                double expectedY = Math.sin(theta) * gm1.getAdvanceX();
+                assertEqual(expectedX, gm2.getAdvanceX(), 1, name + " rotated x", i);
+                assertEqual(expectedY, gm2.getAdvanceY(), 1, name + " rotated y", i);
+            }
+        }
+    }
+
+    private static void assertEqual(double d1, double d2, double variance,
+                                    String scenario, int index) {
+        if (Math.abs(d1 - d2) > variance) {
+            String msg = String.format("%s for index %d: %f != %f", scenario, index, d1, d2);
+            throw new RuntimeException(msg);
+        }
+    }
+}
diff --git a/test/jdk/java/awt/print/PrinterJob/ExceptionFromPrintableIsIgnoredTest.java b/test/jdk/java/awt/print/PrinterJob/ExceptionFromPrintableIsIgnoredTest.java
index a62ae536e1b..4c2ff370cb8 100644
--- a/test/jdk/java/awt/print/PrinterJob/ExceptionFromPrintableIsIgnoredTest.java
+++ b/test/jdk/java/awt/print/PrinterJob/ExceptionFromPrintableIsIgnoredTest.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2021, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -21,15 +21,16 @@
  * questions.
  */
 
-/* @test
-   @bug 8262731
-   @key headful printer
-   @summary Verify that "PrinterJob.print" throws the expected exception,
-            if "Printable.print" throws an exception.
-   @run main ExceptionFromPrintableIsIgnoredTest MAIN PE
-   @run main ExceptionFromPrintableIsIgnoredTest MAIN RE
-   @run main ExceptionFromPrintableIsIgnoredTest EDT PE
-   @run main ExceptionFromPrintableIsIgnoredTest EDT RE
+/*
+ * @test
+ * @bug 8262731 8268675
+ * @key printer
+ * @summary Verify that "PrinterJob.print" throws the expected exception,
+ *          if "Printable.print" throws an exception.
+ * @run main ExceptionFromPrintableIsIgnoredTest MAIN PE
+ * @run main ExceptionFromPrintableIsIgnoredTest MAIN RE
+ * @run main ExceptionFromPrintableIsIgnoredTest EDT PE
+ * @run main ExceptionFromPrintableIsIgnoredTest EDT RE
  */
 
 import java.awt.Graphics;
@@ -64,14 +65,6 @@ public class ExceptionFromPrintableIsIgnoredTest {
                 "Test started. threadType='%s', exceptionType='%s'",
                 threadType, exceptionType));
 
-        String osName = System.getProperty("os.name");
-        boolean isOSX = osName.toLowerCase().startsWith("mac");
-        if ((exceptionType == TestExceptionType.RE) && !isOSX) {
-            System.out.println(
-                "Currently this test scenario can be verified only on macOS.");
-            return;
-        }
-
         printError = null;
 
         if (threadType == TestThreadType.MAIN) {
diff --git a/test/jdk/java/lang/management/RuntimeMXBean/InputArgument.java b/test/jdk/java/lang/management/RuntimeMXBean/InputArgument.java
index 66c3d3f41f5..0e7609b86ed 100644
--- a/test/jdk/java/lang/management/RuntimeMXBean/InputArgument.java
+++ b/test/jdk/java/lang/management/RuntimeMXBean/InputArgument.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2022, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -62,41 +62,60 @@
  * @run main/othervm -Dprops=something InputArgument -Dprops=something
  */
 
+/*
+ * @test
+ * @bug     8378110
+ * @summary RuntimeMXBean.getInputArguments() handling of flags from settings file.
+ *
+ * @run driver InputArgument generateFlagsFile
+ * @run main/othervm -XX:+UseFastJNIAccessors -XX:Flags=InputArgument.flags InputArgument
+ * -XX:+UseFastJNIAccessors -XX:-UseG1GC -XX:+UseParallelGC -XX:MaxHeapSize=100M
+ */
+
 import java.lang.management.*;
+import java.nio.file.Files;
+import java.nio.file.Paths;
 import java.util.List;
 import java.util.ListIterator;
 
 public class InputArgument {
     private static RuntimeMXBean rm = ManagementFactory.getRuntimeMXBean();
-    private static String vmOption = null;
 
     public static void main(String args[]) throws Exception {
-        // set the expected input argument
-        if (args.length > 0) {
-            vmOption = args[0];
-        }
-
-        List<String> options = rm.getInputArguments();
-        if (vmOption == null) {
+        if (args.length == 1 && "generateFlagsFile".equals(args[0])) {
+            generateFlagsFile();
             return;
         }
 
-        boolean testFailed = true;
+        String[] vmOptions = args;
+        List<String> options = rm.getInputArguments();
         System.out.println("Number of arguments = " + options.size());
         int i = 0;
         for (String arg : options) {
             System.out.println("Input arg " + i + " = " + arg);
             i++;
-            if (arg.equals(vmOption)) {
-                testFailed = false;
-                break;
-            }
         }
-        if (testFailed) {
-            throw new RuntimeException("TEST FAILED: " +
-                "VM option " + vmOption + " not found");
+
+        for (String expected : vmOptions) {
+            boolean found = false;
+            for (String arg : options) {
+                if (arg.equals(expected)) {
+                    found = true;
+                    break;
+                }
+            }
+            if (!found) {
+                throw new RuntimeException("TEST FAILED: " +
+                    "VM option " + expected + " not found");
+            }
         }
 
         System.out.println("Test passed.");
     }
+
+    private static void generateFlagsFile() throws Exception {
+        // 3 types of flag; both boolean cases and 1 numeric
+        Files.writeString(Paths.get("", "InputArgument.flags"),
+            String.format("-UseG1GC%n+UseParallelGC%nMaxHeapSize=100M%n"));
+    }
 }
diff --git a/test/jdk/java/lang/runtime/ObjectMethodsTest.java b/test/jdk/java/lang/runtime/ObjectMethodsTest.java
index 951d3b68383..d7ca5912273 100644
--- a/test/jdk/java/lang/runtime/ObjectMethodsTest.java
+++ b/test/jdk/java/lang/runtime/ObjectMethodsTest.java
@@ -36,11 +36,11 @@ import java.lang.invoke.MethodType;
 import java.lang.runtime.ObjectMethods;
 import static java.lang.invoke.MethodType.methodType;
 
-import static org.junit.jupiter.api.Assertions.assertEquals;
-import static org.junit.jupiter.api.Assertions.assertThrows;
-import static org.junit.jupiter.api.Assertions.assertFalse;
-import static org.junit.jupiter.api.Assertions.assertTrue;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.MethodSource;
+
+import static org.junit.jupiter.api.Assertions.*;
 
 public class ObjectMethodsTest {
 
@@ -144,8 +144,8 @@ public class ObjectMethodsTest {
         assertEquals("Empty[]", (String)handle.invokeExact(new Empty()));
     }
 
-    Class<NullPointerException> NPE = NullPointerException.class;
-    Class<IllegalArgumentException> IAE = IllegalArgumentException.class;
+    private static final Class<NullPointerException> NPE = NullPointerException.class;
+    private static final Class<IllegalArgumentException> IAE = IllegalArgumentException.class;
 
     @Test
     public void exceptions()  {
@@ -157,25 +157,60 @@ public class ObjectMethodsTest {
         assertThrows(IAE, () -> ObjectMethods.bootstrap(LOOKUP, "toString", C.EQUALS_DESC,    C.class, "x;y", C.ACCESSORS));
         assertThrows(IAE, () -> ObjectMethods.bootstrap(LOOKUP, "hashCode", C.TO_STRING_DESC, C.class, "x;y", C.ACCESSORS));
         assertThrows(IAE, () -> ObjectMethods.bootstrap(LOOKUP, "equals",   C.HASHCODE_DESC,  C.class, "x;y", C.ACCESSORS));
+    }
 
-        record NamePlusType(String mn, MethodType mt) {}
-        List<NamePlusType> namePlusTypeList = List.of(
+    record NamePlusType(String name, MethodType type) {}
+
+    static List<NamePlusType> namePlusTypeList() {
+        return List.of(
                 new NamePlusType("toString", C.TO_STRING_DESC),
                 new NamePlusType("equals", C.EQUALS_DESC),
                 new NamePlusType("hashCode", C.HASHCODE_DESC)
         );
-
-        for (NamePlusType npt : namePlusTypeList) {
-            assertThrows(NPE, () -> ObjectMethods.bootstrap(LOOKUP, npt.mn(), npt.mt(), C.class, "x;y", null));
-            assertThrows(NPE, () -> ObjectMethods.bootstrap(LOOKUP, npt.mn(), npt.mt(), C.class, "x;y", new MethodHandle[]{null}));
-            assertThrows(NPE, () -> ObjectMethods.bootstrap(LOOKUP, npt.mn(), npt.mt(), C.class, null,  C.ACCESSORS));
-            assertThrows(NPE, () -> ObjectMethods.bootstrap(LOOKUP, npt.mn(), npt.mt(), null,    "x;y", C.ACCESSORS));
-            assertThrows(NPE, () -> ObjectMethods.bootstrap(LOOKUP, npt.mn(), null,     C.class, "x;y", C.ACCESSORS));
-            assertThrows(NPE, () -> ObjectMethods.bootstrap(LOOKUP, null,     npt.mt(), C.class, "x;y", C.ACCESSORS));
-            assertThrows(NPE, () -> ObjectMethods.bootstrap(null, npt.mn(),     npt.mt(), C.class, "x;y", C.ACCESSORS));
-        }
     }
 
+    @MethodSource("namePlusTypeList")
+    @ParameterizedTest
+    void commonExceptions(NamePlusType npt) {
+        String name = npt.name();
+        MethodType type = npt.type();
+
+        // Null checks
+        assertThrows(NPE, () -> ObjectMethods.bootstrap(LOOKUP, name, type, C.class, "x;y", null));
+        assertThrows(NPE, () -> ObjectMethods.bootstrap(LOOKUP, name, type, C.class, "x;y", new MethodHandle[]{null}));
+        assertThrows(NPE, () -> ObjectMethods.bootstrap(LOOKUP, name, type, C.class, null,  C.ACCESSORS));
+        assertThrows(NPE, () -> ObjectMethods.bootstrap(LOOKUP, name, type, null,    "x;y", C.ACCESSORS));
+        assertThrows(NPE, () -> ObjectMethods.bootstrap(LOOKUP, name, null, C.class, "x;y", C.ACCESSORS));
+        assertThrows(NPE, () -> ObjectMethods.bootstrap(LOOKUP, null, type, C.class, "x;y", C.ACCESSORS));
+        assertThrows(NPE, () -> ObjectMethods.bootstrap(null,   name, type, C.class, "x;y", C.ACCESSORS));
+
+        // Bad indy call receiver type - change C to this test class
+        assertThrows(IAE, () -> ObjectMethods.bootstrap(LOOKUP, name, type.changeParameterType(0, this.getClass()), C.class, "x;y", C.ACCESSORS));
+
+        // Bad getter types
+        var wrongReceiverGetter = assertDoesNotThrow(() -> MethodHandles.lookup().findGetter(this.getClass(), "y", int.class));
+        assertThrows(IAE, () -> ObjectMethods.bootstrap(LOOKUP, name, type, C.class, "x;y",
+                new MethodHandle[]{
+                        C.ACCESSORS[0],
+                        wrongReceiverGetter,
+                }));
+        var extraArgGetter = MethodHandles.dropArguments(C.ACCESSORS[1], 1, int.class);
+        assertThrows(IAE, () -> ObjectMethods.bootstrap(LOOKUP, name, type, C.class, "x;y",
+                new MethodHandle[]{
+                        C.ACCESSORS[0],
+                        extraArgGetter,
+                }));
+        var voidReturnGetter = MethodHandles.empty(MethodType.methodType(void.class, C.class));
+        assertThrows(IAE, () -> ObjectMethods.bootstrap(LOOKUP, name, type, C.class, "x;y",
+                new MethodHandle[]{
+                        C.ACCESSORS[0],
+                        voidReturnGetter,
+                }));
+    }
+
+    // same field name and type as C::y, for wrongReceiverGetter
+    private int y;
+
     // Based on the ObjectMethods internal implementation
     private static int hashCombiner(int x, int y) {
         return x*31 + y;
diff --git a/test/jdk/java/net/URLClassLoader/HttpTest.java b/test/jdk/java/net/URLClassLoader/HttpTest.java
index 620eb34dbaa..09ee6dcfa85 100644
--- a/test/jdk/java/net/URLClassLoader/HttpTest.java
+++ b/test/jdk/java/net/URLClassLoader/HttpTest.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2002, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2002, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -24,233 +24,298 @@
 /**
  * @test
  * @bug 4636331
+ * @modules jdk.httpserver
  * @library /test/lib
- * @summary Check that URLClassLoader doesn't create excessive http
- *          connections
+ * @summary Check that URLClassLoader with HTTP paths lookups produce the expected http requests
+ * @run junit HttpTest
  */
 import java.net.*;
 import java.io.*;
+import java.nio.charset.StandardCharsets;
 import java.util.*;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.function.Consumer;
 
+import com.sun.net.httpserver.HttpHandler;
+import com.sun.net.httpserver.HttpServer;
 import jdk.test.lib.net.URIBuilder;
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
 public class HttpTest {
 
-    /*
-     * Simple http server to service http requests. Auto shutdown
-     * if "idle" (no requests) for 10 seconds. Forks worker thread
-     * to service persistent connections. Work threads shutdown if
-     * "idle" for 5 seconds.
-     */
-    static class HttpServer implements Runnable {
+    // HTTP server used to track requests
+    static HttpServer server;
 
-        private static HttpServer svr = null;
-        private static Counters cnts = null;
-        private static ServerSocket ss;
+    // RequestLog for capturing requests
+    static class RequestLog {
+        List<Request> log = new ArrayList<>();
 
-        private static Object counterLock = new Object();
-        private static int getCount = 0;
-        private static int headCount = 0;
-
-        class Worker extends Thread {
-            Socket s;
-            Worker(Socket s) {
-                this.s = s;
-            }
-
-            public void run() {
-                InputStream in = null;
-                try {
-                    in = s.getInputStream();
-                    for (;;) {
-
-                        // read entire request from client
-                        byte b[] = new byte[1024];
-                        int n, total=0;
-
-                        // max 5 seconds to wait for new request
-                        s.setSoTimeout(5000);
-                        try {
-                            do {
-                                n = in.read(b, total, b.length-total);
-                                // max 0.5 seconds between each segment
-                                // of request.
-                                s.setSoTimeout(500);
-                                if (n > 0) total += n;
-                            } while (n > 0);
-                        } catch (SocketTimeoutException e) { }
-
-                        if (total == 0) {
-                            s.close();
-                            return;
-                        }
-
-                        boolean getRequest = false;
-                        if (b[0] == 'G' && b[1] == 'E' && b[2] == 'T')
-                            getRequest = true;
-
-                        synchronized (counterLock) {
-                            if (getRequest)
-                                getCount++;
-                            else
-                                headCount++;
-                        }
-
-                        // response to client
-                        PrintStream out = new PrintStream(
-                                new BufferedOutputStream(
-                                        s.getOutputStream() ));
-                        out.print("HTTP/1.1 200 OK\r\n");
-
-                        out.print("Content-Length: 75000\r\n");
-                        out.print("\r\n");
-                        if (getRequest) {
-                            for (int i=0; i<75*1000; i++) {
-                                out.write( (byte)'.' );
-                            }
-                        }
-                        out.flush();
-
-                    } // for
-
-                } catch (Exception e) {
-                    unexpected(e);
-                } finally {
-                    if (in != null) { try {in.close(); } catch(IOException e) {unexpected(e);} }
-                }
-            }
+        // Add a request to the log
+        public synchronized void capture(String method, URI uri) {
+            log.add(new Request(method, uri));
         }
 
-        HttpServer() throws Exception {
-            ss = new ServerSocket();
-            ss.bind(new InetSocketAddress(InetAddress.getLoopbackAddress(), 0));
+        // Clear requests
+        public synchronized void clear() {
+            log.clear();
         }
 
-        public void run() {
-            try {
-                // shutdown if no request in 10 seconds.
-                ss.setSoTimeout(10000);
-                for (;;) {
-                    Socket s = ss.accept();
-                    (new Worker(s)).start();
-                }
-            } catch (Exception e) {
-            }
+        public synchronized List<Request> requests() {
+            return List.copyOf(log);
         }
-
-        void unexpected(Exception e) {
-            System.out.println(e);
-            e.printStackTrace();
-        }
-
-        public static HttpServer create() throws Exception {
-            if (svr != null)
-                return svr;
-            cnts = new Counters();
-            svr = new HttpServer();
-            (new Thread(svr)).start();
-            return svr;
-        }
-
-        public static void shutdown() throws Exception {
-            if (svr != null) {
-                ss.close();
-                svr = null;
-            }
-        }
-
-        public int port() {
-            return ss.getLocalPort();
-        }
-
-        public static class Counters {
-            public void reset() {
-                synchronized (counterLock) {
-                    getCount = 0;
-                    headCount = 0;
-                }
-            }
-
-            public int getCount() {
-                synchronized (counterLock) {
-                    return getCount;
-                }
-            }
-
-            public int headCount() {
-                synchronized (counterLock) {
-                    return headCount;
-                }
-            }
-
-            public String toString() {
-                synchronized (counterLock) {
-                    return "GET count: " + getCount + "; " +
-                       "HEAD count: " + headCount;
-                }
-            }
-        }
-
-        public Counters counters() {
-            return cnts;
-        }
-
     }
 
-    public static void main(String args[]) throws Exception {
-        boolean failed = false;
+    // Represents a single request
+    record Request(String method, URI path) {}
 
-        // create http server
-        HttpServer svr = HttpServer.create();
+    // Request log for this test
+    static RequestLog log = new RequestLog();
 
-        // create class loader
-        URL urls[] = {
-                URIBuilder.newBuilder().scheme("http").loopback().port(svr.port())
-                        .path("/dir1/").toURL(),
-                URIBuilder.newBuilder().scheme("http").loopback().port(svr.port())
-                        .path("/dir2/").toURL(),
+    // Handlers specific to tests
+    static Map<URI, HttpHandler> handlers = new ConcurrentHashMap<>();
+
+    // URLClassLoader with HTTP URL class path
+    private static URLClassLoader loader;
+
+    @BeforeAll
+    static void setup() throws Exception {
+        server = HttpServer.create();
+        server.bind(new InetSocketAddress(
+                InetAddress.getLoopbackAddress(), 0), 0);
+        server.createContext("/", e -> {
+            // Capture request in the log
+            log.capture(e.getRequestMethod(), e.getRequestURI());
+            // Check for custom handler
+            HttpHandler custom = handlers.get(e.getRequestURI());
+            if (custom != null) {
+                custom.handle(e);
+            } else {
+                // Successful responses echo the request path in the body
+                byte[] response = e.getRequestURI().getPath()
+                        .getBytes(StandardCharsets.UTF_8);
+                e.sendResponseHeaders(200, response.length);
+                try (var out = e.getResponseBody()) {
+                    out.write(response);
+                }
+            }
+            e.close();
+        });
+        server.start();
+        int port = server.getAddress().getPort();
+
+        // Create class loader with two HTTP URLs
+        URL[] searchPath = new URL[] {
+                getHttpUri("/dir1/", port),
+                getHttpUri("/dir2/", port)
         };
-        URLClassLoader cl = new URLClassLoader(urls);
+        loader = new URLClassLoader(searchPath);
+    }
 
-        // Test 1 - check that getResource does single HEAD request
-        svr.counters().reset();
-        URL url = cl.getResource("foo.gif");
-        System.out.println(svr.counters());
+    // Create an HTTP URL for the given path and port using the loopback address
+    private static URL getHttpUri(String path, int port) throws Exception {
+        return URIBuilder.newBuilder()
+                .scheme("http")
+                .loopback()
+                .port(port)
+                .path(path).toURL();
+    }
 
-        if (svr.counters().getCount() > 0 ||
-            svr.counters().headCount() > 1) {
-            failed = true;
+    // Add redirect handler for a given path
+    private static void redirect(String path, String target) {
+        handlers.put(URI.create(path), e -> {
+            e.getResponseHeaders().set("Location", target);
+            e.sendResponseHeaders(301, 0);
+        });
+    }
+
+    // Return 404 not found for a given path
+    private static void notFound(String path) {
+        handlers.put(URI.create(path),  e ->
+                e.sendResponseHeaders(404, 0));
+    }
+
+    @AfterAll
+    static void shutdown() {
+        server.stop(2000);
+    }
+
+    @BeforeEach
+    void reset() {
+        synchronized (log) {
+            log.clear();
+        }
+        handlers.clear();
+    }
+
+    // Check that getResource does single HEAD request
+    @Test
+    void getResourceSingleHead() {
+        URL url = loader.getResource("foo.gif");
+        // Expect one HEAD
+        assertRequests(e -> e
+                .request("HEAD", "/dir1/foo.gif")
+        );
+    }
+
+    // Check that getResource follows redirects
+    @Test
+    void getResourceShouldFollowRedirect() {
+        redirect("/dir1/foo.gif", "/dir1/target.gif");
+        URL url = loader.getResource("foo.gif");
+        // Expect extra HEAD for redirect target
+        assertRequests(e -> e
+                .request("HEAD", "/dir1/foo.gif")
+                .request("HEAD", "/dir1/target.gif")
+        );
+
+        /*
+         * Note: Long-standing behavior is that URLClassLoader:getResource
+         * returns a URL for the requested resource, not the location redirected to
+         */
+        assertEquals("/dir1/foo.gif", url.getPath());
+
+    }
+
+    // Check that getResource treats a redirect to a not-found resource as a not-found resource
+    @Test
+    void getResourceRedirectTargetNotFound() {
+        redirect("/dir1/foo.gif", "/dir1/target.gif");
+        notFound("/dir1/target.gif");
+        URL url = loader.getResource("foo.gif");
+        // Expect extra HEAD for redirect target and next URL in search path
+        assertRequests(e -> e
+                .request("HEAD", "/dir1/foo.gif")
+                .request("HEAD", "/dir1/target.gif")
+                .request("HEAD", "/dir2/foo.gif")
+
+        );
+        // Should find URL for /dir2
+        assertEquals("/dir2/foo.gif", url.getPath());
+    }
+
+    // Check that getResourceAsStream does one HEAD and one GET request
+    @Test
+    void getResourceAsStreamSingleGet() throws IOException {
+        // Expect content from the first path
+        try (var in = loader.getResourceAsStream("foo2.gif")) {
+            assertEquals("/dir1/foo2.gif",
+                    new String(in.readAllBytes(), StandardCharsets.UTF_8));
+        }
+        // Expect one HEAD, one GET
+        assertRequests( e -> e
+                .request("HEAD", "/dir1/foo2.gif")
+                .request("GET",  "/dir1/foo2.gif")
+        );
+    }
+
+    // Check that getResourceAsStream follows redirects
+    @Test
+    void getResourceAsStreamFollowRedirect() throws IOException {
+        redirect("/dir1/foo.gif", "/dir1/target.gif");
+        // Expect content from the redirected location
+        try (var in = loader.getResourceAsStream("foo.gif")) {
+            assertEquals("/dir1/target.gif",
+                    new String(in.readAllBytes(), StandardCharsets.UTF_8));
         }
 
-        // Test 2 - check that getResourceAsStream does at most
-        //          one GET request
-        svr.counters().reset();
-        InputStream in = cl.getResourceAsStream("foo2.gif");
-        in.close();
-        System.out.println(svr.counters());
-        if (svr.counters().getCount() > 1) {
-            failed = true;
+        /*
+         * Note: Long standing behavior of URLClassLoader::getResourceAsStream
+         * is to use HEAD during the findResource resource discovery and to not
+         * "remember" the HEAD redirect location when performing the GET. This
+         * explains why we observe two redirects here, one for HEAD, one for GET.
+         */
+        assertRequests( e -> e
+                .request("HEAD", "/dir1/foo.gif")
+                .request("HEAD", "/dir1/target.gif")
+                .request("GET",  "/dir1/foo.gif")
+                .request("GET",  "/dir1/target.gif")
+        );
+    }
+
+    // getResourceAsStream on a 404 should try next path
+    @Test
+    void getResourceTryNextPath() throws IOException {
+        // Make the first path return 404
+        notFound("/dir1/foo.gif");
+        // Expect content from the second path
+        try (var in = loader.getResourceAsStream("foo.gif")) {
+            assertEquals("/dir2/foo.gif",
+                    new String(in.readAllBytes(), StandardCharsets.UTF_8));
         }
+        // Expect two HEADs, one GET
+        assertRequests(e -> e
+                .request("HEAD", "/dir1/foo.gif")
+                .request("HEAD", "/dir2/foo.gif")
+                .request("GET",  "/dir2/foo.gif")
+        );
+    }
 
-        // Test 3 - check that getResources only does HEAD requests
-        svr.counters().reset();
-        Enumeration e = cl.getResources("foos.gif");
-        try {
-            for (;;) {
-                e.nextElement();
-            }
-        } catch (NoSuchElementException exc) { }
-        System.out.println(svr.counters());
-        if (svr.counters().getCount() > 1) {
-            failed = true;
-        }
+    // Check that getResources only does HEAD requests
+    @Test
+    void getResourcesOnlyHead() throws IOException {
+        Collections.list(loader.getResources("foos.gif"));
+        // Expect one HEAD for each path
+        assertRequests(e ->  e
+                .request("HEAD", "/dir1/foos.gif")
+                .request("HEAD", "/dir2/foos.gif")
+        );
+    }
 
-        // shutdown http server
-        svr.shutdown();
+    // Check that getResources skips 404 URL
+    @Test
+    void getResourcesShouldSkipFailedHead() throws IOException {
+        // Make first path fail with 404
+        notFound("/dir1/foos.gif");
+        List<URL> resources = Collections.list(loader.getResources("foos.gif"));
+        // Expect one HEAD for each path
+        assertRequests(e ->  e
+                .request("HEAD", "/dir1/foos.gif")
+                .request("HEAD", "/dir2/foos.gif")
+        );
 
-        if (failed) {
-            throw new Exception("Excessive http connections established - Test failed");
+        // Expect a single URL to be returned
+        assertEquals(1, resources.size());
+    }
+
+    // Utils for asserting requests
+    static class Expect {
+        List<Request> requests = new ArrayList<>();
+
+        Expect request(String method, String path) {
+            requests.add(new Request(method, URI.create(path)));
+            return this;
         }
     }
 
+    static void assertRequests(Consumer<Expect> e) {
+        // Collect expected requests
+        Expect exp = new Expect();
+        e.accept(exp);
+        List<Request> expected = exp.requests;
+
+        // Actual requests
+        List<Request> requests = log.requests();
+
+        // Verify expected number of requests
+        assertEquals(expected.size(), requests.size(), "Unexpected request count");
+
+        // Verify expected requests in order
+        for (int i = 0; i < expected.size(); i++) {
+            Request ex = expected.get(i);
+            Request req = requests.get(i);
+            // Verify method
+            assertEquals(ex.method, req.method,
+                    String.format("Request %s has unexpected method %s", i, ex.method)
+            );
+            // Verify path
+            assertEquals(ex.path, req.path,
+                    String.format("Request %s has unexpected request URI %s", i, ex.path)
+            );
+        }
+    }
 }
diff --git a/test/jdk/java/nio/channels/Selector/ConnectionRefusedMessage.java b/test/jdk/java/nio/channels/SocketChannel/ConnectionRefusedMessage.java
similarity index 92%
rename from test/jdk/java/nio/channels/Selector/ConnectionRefusedMessage.java
rename to test/jdk/java/nio/channels/SocketChannel/ConnectionRefusedMessage.java
index 04490f63efe..d71bc6569cb 100644
--- a/test/jdk/java/nio/channels/Selector/ConnectionRefusedMessage.java
+++ b/test/jdk/java/nio/channels/SocketChannel/ConnectionRefusedMessage.java
@@ -42,7 +42,8 @@ import static org.junit.jupiter.api.Assumptions.assumeTrue;
  * @summary Verify that when a SocketChannel is registered with a Selector
  *          with an interest in CONNECT operation, then SocketChannel.finishConnect()
  *          throws the correct exception message, if the connect() fails
- * @run junit ${test.main.class}
+ * @run junit/othervm -Djdk.includeInExceptions=hostInfoExclSocket ${test.main.class}
+ * @run junit/othervm -Djdk.includeInExceptions=hostInfo -Dcheck.relaxed=true ${test.main.class}
  */
 class ConnectionRefusedMessage {
 
@@ -108,10 +109,14 @@ class ConnectionRefusedMessage {
     }
 
     private static void assertExceptionMessage(final ConnectException ce) {
-        if (!"Connection refused".equals(ce.getMessage())) {
-            // propagate the original exception
-            fail("unexpected exception message: " + ce.getMessage(), ce);
+        if ("Connection refused".equals(ce.getMessage())) {
+            return;
         }
+        if (Boolean.getBoolean("check.relaxed") && ce.getMessage() != null && ce.getMessage().startsWith("Connection refused")) {
+            return;
+        }
+        // propagate the original exception
+        fail("unexpected exception message: " + ce.getMessage(), ce);
     }
 
     // Try to find a suitable port to provoke a "Connection Refused" error.
diff --git a/test/jdk/java/util/zip/ZipFile/EndOfCenValidation.java b/test/jdk/java/util/zip/ZipFile/EndOfCenValidation.java
index 7adcfb9c128..7ca71c9890a 100644
--- a/test/jdk/java/util/zip/ZipFile/EndOfCenValidation.java
+++ b/test/jdk/java/util/zip/ZipFile/EndOfCenValidation.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2023, 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2023, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -25,33 +25,26 @@
  * @bug 8272746
  * @modules java.base/jdk.internal.util
  * @summary Verify that ZipFile rejects files with CEN sizes exceeding the implementation limit
+ * @library /test/lib
+ * @build jdk.test.lib.util.ZipUtils
  * @run junit/othervm EndOfCenValidation
  */
 
 import jdk.internal.util.ArraysSupport;
-import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.ValueSource;
 
-import java.io.*;
-import java.nio.ByteBuffer;
-import java.nio.ByteOrder;
-import java.nio.channels.FileChannel;
-import java.nio.charset.StandardCharsets;
+import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
-import java.nio.file.StandardOpenOption;
-import java.util.Arrays;
-import java.util.EnumSet;
-import java.util.HexFormat;
-import java.util.zip.ZipEntry;
 import java.util.zip.ZipException;
 import java.util.zip.ZipFile;
-import java.util.zip.ZipOutputStream;
 
-import static org.junit.jupiter.api.Assertions.*;
+import static jdk.test.lib.util.ZipUtils.*;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
 
 /**
  * This test augments {@link TestTooManyEntries}. It creates sparse ZIPs where
@@ -65,36 +58,13 @@ import static org.junit.jupiter.api.Assertions.*;
 public class EndOfCenValidation {
 
     // Zip files produced by this test
-    public static final Path CEN_TOO_LARGE_ZIP = Path.of("cen-size-too-large.zip");
-    public static final Path INVALID_CEN_SIZE = Path.of("invalid-zen-size.zip");
-    public static final Path BAD_CEN_OFFSET_ZIP = Path.of("bad-cen-offset.zip");
-    // Some ZipFile constants for manipulating the 'End of central directory record' (END header)
-    private static final int ENDHDR = ZipFile.ENDHDR; // End of central directory record size
-    private static final int ENDSIZ = ZipFile.ENDSIZ; // Offset of CEN size field within ENDHDR
-    private static final int ENDOFF = ZipFile.ENDOFF; // Offset of CEN offset field within ENDHDR
+    static final Path CEN_TOO_LARGE_ZIP = Path.of("cen-size-too-large.zip");
+    static final Path INVALID_CEN_SIZE = Path.of("invalid-zen-size.zip");
+    static final Path BAD_CEN_OFFSET_ZIP = Path.of("bad-cen-offset.zip");
+    static final Path BAD_ENTRY_COUNT_ZIP = Path.of("bad-entry-count.zip");
+
     // Maximum allowed CEN size allowed by ZipFile
-    private static final int MAX_CEN_SIZE = ArraysSupport.SOFT_MAX_ARRAY_LENGTH;
-
-    // Expected message when CEN size does not match file size
-    private static final String INVALID_CEN_BAD_SIZE = "invalid END header (bad central directory size)";
-    // Expected message when CEN offset is too large
-    private static final String INVALID_CEN_BAD_OFFSET = "invalid END header (bad central directory offset)";
-    // Expected message when CEN size is too large
-    private static final String INVALID_CEN_SIZE_TOO_LARGE = "invalid END header (central directory size too large)";
-    // Expected message when total entry count is too large
-    private static final String INVALID_BAD_ENTRY_COUNT = "invalid END header (total entries count too large)";
-
-    // A valid ZIP file, used as a template
-    private byte[] zipBytes;
-
-    /**
-     * Create a valid ZIP file, used as a template
-     * @throws IOException if an error occurs
-     */
-    @BeforeEach
-    public void setup() throws IOException {
-        zipBytes = templateZip();
-    }
+    static final int MAX_CEN_SIZE = ArraysSupport.SOFT_MAX_ARRAY_LENGTH;
 
     /**
      * Delete big files after test, in case the file system did not support sparse files.
@@ -105,6 +75,7 @@ public class EndOfCenValidation {
         Files.deleteIfExists(CEN_TOO_LARGE_ZIP);
         Files.deleteIfExists(INVALID_CEN_SIZE);
         Files.deleteIfExists(BAD_CEN_OFFSET_ZIP);
+        Files.deleteIfExists(BAD_ENTRY_COUNT_ZIP);
     }
 
     /**
@@ -115,14 +86,8 @@ public class EndOfCenValidation {
     @Test
     public void shouldRejectTooLargeCenSize() throws IOException {
         int size = MAX_CEN_SIZE + 1;
-
         Path zip = zipWithModifiedEndRecord(size, true, 0, CEN_TOO_LARGE_ZIP);
-
-        ZipException ex = assertThrows(ZipException.class, () -> {
-            new ZipFile(zip.toFile());
-        });
-
-        assertEquals(INVALID_CEN_SIZE_TOO_LARGE, ex.getMessage());
+        verifyRejection(zip, INVALID_CEN_SIZE_TOO_LARGE);
     }
 
     /**
@@ -133,16 +98,9 @@ public class EndOfCenValidation {
      */
     @Test
     public void shouldRejectInvalidCenSize() throws IOException {
-
         int size = MAX_CEN_SIZE;
-
         Path zip = zipWithModifiedEndRecord(size, false, 0, INVALID_CEN_SIZE);
-
-        ZipException ex = assertThrows(ZipException.class, () -> {
-            new ZipFile(zip.toFile());
-        });
-
-        assertEquals(INVALID_CEN_BAD_SIZE, ex.getMessage());
+        verifyRejection(zip, INVALID_CEN_BAD_SIZE);
     }
 
     /**
@@ -153,16 +111,9 @@ public class EndOfCenValidation {
      */
     @Test
     public void shouldRejectInvalidCenOffset() throws IOException {
-
         int size = MAX_CEN_SIZE;
-
         Path zip = zipWithModifiedEndRecord(size, true, 100, BAD_CEN_OFFSET_ZIP);
-
-        ZipException ex = assertThrows(ZipException.class, () -> {
-            new ZipFile(zip.toFile());
-        });
-
-        assertEquals(INVALID_CEN_BAD_OFFSET, ex.getMessage());
+        verifyRejection(zip, INVALID_CEN_BAD_OFFSET);
     }
 
     /**
@@ -181,192 +132,20 @@ public class EndOfCenValidation {
             Long.MAX_VALUE        // Unreasonably large
     })
     public void shouldRejectBadTotalEntries(long totalEntries) throws IOException {
-        /**
-         * A small ZIP using the ZIP64 format.
-         *
-         * ZIP created using: "echo -n hello | zip zip64.zip -"
-         * Hex encoded using: "cat zip64.zip | xxd -ps"
-         *
-         * The file has the following structure:
-         *
-         * 0000 LOCAL HEADER #1       04034B50
-         * 0004 Extract Zip Spec      2D '4.5'
-         * 0005 Extract OS            00 'MS-DOS'
-         * 0006 General Purpose Flag  0000
-         * 0008 Compression Method    0000 'Stored'
-         * 000A Last Mod Time         5947AB78 'Mon Oct  7 21:27:48 2024'
-         * 000E CRC                   363A3020
-         * 0012 Compressed Length     FFFFFFFF
-         * 0016 Uncompressed Length   FFFFFFFF
-         * 001A Filename Length       0001
-         * 001C Extra Length          0014
-         * 001E Filename              '-'
-         * 001F Extra ID #0001        0001 'ZIP64'
-         * 0021   Length              0010
-         * 0023   Uncompressed Size   0000000000000006
-         * 002B   Compressed Size     0000000000000006
-         * 0033 PAYLOAD               hello.
-         *
-         * 0039 CENTRAL HEADER #1     02014B50
-         * 003D Created Zip Spec      1E '3.0'
-         * 003E Created OS            03 'Unix'
-         * 003F Extract Zip Spec      2D '4.5'
-         * 0040 Extract OS            00 'MS-DOS'
-         * 0041 General Purpose Flag  0000
-         * 0043 Compression Method    0000 'Stored'
-         * 0045 Last Mod Time         5947AB78 'Mon Oct  7 21:27:48 2024'
-         * 0049 CRC                   363A3020
-         * 004D Compressed Length     00000006
-         * 0051 Uncompressed Length   FFFFFFFF
-         * 0055 Filename Length       0001
-         * 0057 Extra Length          000C
-         * 0059 Comment Length        0000
-         * 005B Disk Start            0000
-         * 005D Int File Attributes   0001
-         *      [Bit 0]               1 Text Data
-         * 005F Ext File Attributes   11B00000
-         * 0063 Local Header Offset   00000000
-         * 0067 Filename              '-'
-         * 0068 Extra ID #0001        0001 'ZIP64'
-         * 006A   Length              0008
-         * 006C   Uncompressed Size   0000000000000006
-         *
-         * 0074 ZIP64 END CENTRAL DIR 06064B50
-         *      RECORD
-         * 0078 Size of record        000000000000002C
-         * 0080 Created Zip Spec      1E '3.0'
-         * 0081 Created OS            03 'Unix'
-         * 0082 Extract Zip Spec      2D '4.5'
-         * 0083 Extract OS            00 'MS-DOS'
-         * 0084 Number of this disk   00000000
-         * 0088 Central Dir Disk no   00000000
-         * 008C Entries in this disk  0000000000000001
-         * 0094 Total Entries         0000000000000001
-         * 009C Size of Central Dir   000000000000003B
-         * 00A4 Offset to Central dir 0000000000000039
-         *
-         * 00AC ZIP64 END CENTRAL DIR 07064B50
-         *      LOCATOR
-         * 00B0 Central Dir Disk no   00000000
-         * 00B4 Offset to Central dir 0000000000000074
-         * 00BC Total no of Disks     00000001
-         *
-         * 00C0 END CENTRAL HEADER    06054B50
-         * 00C4 Number of this disk   0000
-         * 00C6 Central Dir Disk no   0000
-         * 00C8 Entries in this disk  0001
-         * 00CA Total Entries         0001
-         * 00CC Size of Central Dir   0000003B
-         * 00D0 Offset to Central Dir FFFFFFFF
-         * 00D4 Comment Length        0000
-         */
+        Path zip = zip64WithModifiedTotalEntries(BAD_ENTRY_COUNT_ZIP, totalEntries);
+        verifyRejection(zip, INVALID_BAD_ENTRY_COUNT);
+    }
 
-        byte[] zipBytes = HexFormat.of().parseHex("""
-                504b03042d000000000078ab475920303a36ffffffffffffffff01001400
-                2d010010000600000000000000060000000000000068656c6c6f0a504b01
-                021e032d000000000078ab475920303a3606000000ffffffff01000c0000
-                00000001000000b011000000002d010008000600000000000000504b0606
-                2c000000000000001e032d00000000000000000001000000000000000100
-                0000000000003b000000000000003900000000000000504b060700000000
-                740000000000000001000000504b050600000000010001003b000000ffff
-                ffff0000
-                """.replaceAll("\n",""));
-
-        // Buffer to manipulate the above ZIP
-        ByteBuffer buf = ByteBuffer.wrap(zipBytes).order(ByteOrder.LITTLE_ENDIAN);
-        // Offset of the 'total entries' in the 'ZIP64 END CENTRAL DIR' record
-        // Update ZIP64 entry count to a value which cannot possibly fit in the small CEN
-        buf.putLong(0x94, totalEntries);
-        // The corresponding END field needs the ZIP64 magic value
-        buf.putShort(0xCA, (short) 0xFFFF);
-        // Write the ZIP to disk
-        Path zipFile = Path.of("bad-entry-count.zip");
-        Files.write(zipFile, zipBytes);
-
-        // Verify that the END header is rejected
+    /**
+     * Verify that ZipFile rejects the ZIP file with a ZipException
+     * with the given message
+     * @param zip ZIP file to open
+     * @param msg exception message to expect
+     */
+    private static void verifyRejection(Path zip, String msg) {
         ZipException ex = assertThrows(ZipException.class, () -> {
-            try (var zf = new ZipFile(zipFile.toFile())) {
-            }
+            new ZipFile(zip.toFile());
         });
-
-        assertEquals(INVALID_BAD_ENTRY_COUNT, ex.getMessage());
-    }
-
-    /**
-     * Create an ZIP file with a single entry, then modify the CEN size
-     * in the 'End of central directory record' (END header)  to the given size.
-     *
-     * The CEN is optionally "inflated" with trailing zero bytes such that
-     * its actual size matches the one stated in the END header.
-     *
-     * The CEN offset is optiontially adjusted by the given amount
-     *
-     * The resulting ZIP is technically not valid, but it does allow us
-     * to test that large or invalid CEN sizes are rejected
-     * @param cenSize the CEN size to put in the END record
-     * @param inflateCen if true, zero-pad the CEN to the desired size
-     * @param cenOffAdjust Adjust the CEN offset field of the END record with this amount
-     * @throws IOException if an error occurs
-     */
-    private Path zipWithModifiedEndRecord(int cenSize,
-                                          boolean inflateCen,
-                                          int cenOffAdjust,
-                                          Path zip) throws IOException {
-
-        // A byte buffer for reading the END
-        ByteBuffer buffer = ByteBuffer.wrap(zipBytes.clone()).order(ByteOrder.LITTLE_ENDIAN);
-
-        // Offset of the END header
-        int endOffset = buffer.limit() - ENDHDR;
-
-        // Modify the CEN size
-        int sizeOffset = endOffset + ENDSIZ;
-        int currentCenSize = buffer.getInt(sizeOffset);
-        buffer.putInt(sizeOffset, cenSize);
-
-        // Optionally modify the CEN offset
-        if (cenOffAdjust != 0) {
-            int offOffset = endOffset + ENDOFF;
-            int currentCenOff = buffer.getInt(offOffset);
-            buffer.putInt(offOffset, currentCenOff + cenOffAdjust);
-        }
-
-        // When creating a sparse file, the file must not already exit
-        Files.deleteIfExists(zip);
-
-        // Open a FileChannel for writing a sparse file
-        EnumSet<StandardOpenOption> options = EnumSet.of(StandardOpenOption.CREATE_NEW,
-                StandardOpenOption.WRITE,
-                StandardOpenOption.SPARSE);
-
-        try (FileChannel channel = FileChannel.open(zip, options)) {
-
-            // Write everything up to END
-            channel.write(buffer.slice(0, buffer.limit() - ENDHDR));
-
-            if (inflateCen) {
-                // Inject "empty bytes" to make the actual CEN size match the END
-                int injectBytes = cenSize - currentCenSize;
-                channel.position(channel.position() + injectBytes);
-            }
-            // Write the modified END
-            channel.write(buffer.slice(buffer.limit() - ENDHDR, ENDHDR));
-        }
-        return zip;
-    }
-
-    /**
-     * Produce a byte array of a ZIP with a single entry
-     *
-     * @throws IOException if an error occurs
-     */
-    private byte[] templateZip() throws IOException {
-        ByteArrayOutputStream bout = new ByteArrayOutputStream();
-        try (ZipOutputStream zo = new ZipOutputStream(bout)) {
-            ZipEntry entry = new ZipEntry("duke.txt");
-            zo.putNextEntry(entry);
-            zo.write("duke".getBytes(StandardCharsets.UTF_8));
-        }
-        return bout.toByteArray();
+        assertEquals(msg, ex.getMessage());
     }
 }
diff --git a/test/jdk/javax/swing/JFileChooser/FileSystemView/SystemIconPixelDataTest.java b/test/jdk/javax/swing/JFileChooser/FileSystemView/SystemIconPixelDataTest.java
new file mode 100644
index 00000000000..c71c7a3e6a9
--- /dev/null
+++ b/test/jdk/javax/swing/JFileChooser/FileSystemView/SystemIconPixelDataTest.java
@@ -0,0 +1,93 @@
+/*
+ * Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import java.awt.EventQueue;
+import java.awt.Graphics2D;
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.util.concurrent.atomic.AtomicBoolean;
+
+import javax.swing.Icon;
+import javax.swing.UIManager;
+import javax.swing.UIManager.LookAndFeelInfo;
+import javax.swing.UnsupportedLookAndFeelException;
+import javax.swing.filechooser.FileSystemView;
+
+/**
+ * @test
+ * @bug 8376253
+ * @summary FileSystemView may not report system icons when -Xcheck:jni enabled
+ * @key headful
+ * @run main SystemIconPixelDataTest
+ * @run main/othervm -Xcheck:jni SystemIconPixelDataTest
+ */
+public final class SystemIconPixelDataTest {
+
+    public static void main(String[] args) throws Exception {
+        for (LookAndFeelInfo laf : UIManager.getInstalledLookAndFeels()) {
+            AtomicBoolean ok = new AtomicBoolean();
+            EventQueue.invokeAndWait(() -> ok.set(setLookAndFeel(laf)));
+            if (ok.get()) {
+                EventQueue.invokeAndWait(SystemIconPixelDataTest::test);
+            }
+        }
+    }
+
+    private static boolean setLookAndFeel(LookAndFeelInfo laf) {
+        try {
+            UIManager.setLookAndFeel(laf.getClassName());
+            System.out.println("LookAndFeel: " + laf.getClassName());
+            return true;
+        } catch (UnsupportedLookAndFeelException ignored) {
+            return false;
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    private static void test() {
+        FileSystemView fsv = FileSystemView.getFileSystemView();
+        File home = fsv.getHomeDirectory();
+        Icon icon = fsv.getSystemIcon(home);
+        if (icon == null) {
+            return;
+        }
+        int w = icon.getIconWidth();
+        int h = icon.getIconHeight();
+        if (w <= 0 || h <= 0) {
+            throw new RuntimeException("Invalid icon size: " + w + "x" + h);
+        }
+        var img = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB);
+        Graphics2D g = img.createGraphics();
+        icon.paintIcon(null, g, 0, 0);
+        g.dispose();
+        for (int y = 0; y < h; y++) {
+            for (int x = 0; x < w; x++) {
+                if (img.getRGB(x, y) != 0) {
+                    return;
+                }
+            }
+        }
+        throw new RuntimeException("All pixels are zero");
+    }
+}
diff --git a/test/jdk/javax/swing/ToolTipManager/Test6657026.java b/test/jdk/javax/swing/ToolTipManager/Test6657026.java
deleted file mode 100644
index 0678d57f768..00000000000
--- a/test/jdk/javax/swing/ToolTipManager/Test6657026.java
+++ /dev/null
@@ -1,75 +0,0 @@
-/*
- * Copyright (c) 2009, 2015, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-/*
- * @test
- * @bug 6657026
- * @summary Tests shared ToolTipManager in different application contexts
- * @author Sergey Malenkov
- * @modules java.desktop/sun.awt
- */
-
-import sun.awt.SunToolkit;
-import javax.swing.ToolTipManager;
-
-public class Test6657026 implements Runnable {
-
-    private static final int DISMISS = 4000;
-    private static final int INITIAL = 750;
-    private static final int RESHOW = 500;
-
-    public static void main(String[] args) throws InterruptedException {
-        ToolTipManager manager = ToolTipManager.sharedInstance();
-        if (DISMISS != manager.getDismissDelay()) {
-            throw new Error("unexpected dismiss delay");
-        }
-        if (INITIAL != manager.getInitialDelay()) {
-            throw new Error("unexpected initial delay");
-        }
-        if (RESHOW != manager.getReshowDelay()) {
-            throw new Error("unexpected reshow delay");
-        }
-        manager.setDismissDelay(DISMISS + 1);
-        manager.setInitialDelay(INITIAL + 1);
-        manager.setReshowDelay(RESHOW + 1);
-
-        ThreadGroup group = new ThreadGroup("$$$");
-        Thread thread = new Thread(group, new Test6657026());
-        thread.start();
-        thread.join();
-    }
-
-    public void run() {
-        SunToolkit.createNewAppContext();
-        ToolTipManager manager = ToolTipManager.sharedInstance();
-        if (DISMISS != manager.getDismissDelay()) {
-            throw new Error("shared dismiss delay");
-        }
-        if (INITIAL != manager.getInitialDelay()) {
-            throw new Error("shared initial delay");
-        }
-        if (RESHOW != manager.getReshowDelay()) {
-            throw new Error("shared reshow delay");
-        }
-    }
-}
diff --git a/test/jdk/javax/swing/plaf/metal/MetalTitlePaneBug.java b/test/jdk/javax/swing/plaf/metal/MetalTitlePaneBug.java
new file mode 100644
index 00000000000..dde6249752d
--- /dev/null
+++ b/test/jdk/javax/swing/plaf/metal/MetalTitlePaneBug.java
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2026, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8078744
+ * @summary Verifies right half of system menu icon on title bar
+ *          activates when clicked
+ * @library /java/awt/regtesthelpers
+ * @build PassFailJFrame
+ * @run main/manual MetalTitlePaneBug
+ */
+
+import javax.swing.JFrame;
+import javax.swing.UIManager;
+
+public class MetalTitlePaneBug {
+
+    static final String INSTRUCTIONS = """
+        A Frame is shown with a titlepane.
+        Click on the left edge of the system menu icon on the title pane.
+        It should show "Restore", "Minimize", "Maximize", "Close" menu.
+        Click on the right edge of the system menu icon.
+        It should also show "Restore", "Minimize", "Maximize", "Close" menu.
+        If it shows, press Pass else press Fail.
+    """;
+
+    public static void main(String[] args) throws Exception {
+        UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel");
+        PassFailJFrame.builder()
+                .instructions(INSTRUCTIONS)
+                .columns(40)
+                .testUI(MetalTitlePaneBug::createUI)
+                .build()
+                .awaitAndCheck();
+    }
+
+    static JFrame createUI() {
+        JFrame.setDefaultLookAndFeelDecorated(true);
+        JFrame frame = new JFrame();
+        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        frame.setSize(200, 100);
+        return frame;
+    }
+}
diff --git a/test/jdk/jdk/nio/zipfs/EndOfCenValidation.java b/test/jdk/jdk/nio/zipfs/EndOfCenValidation.java
new file mode 100644
index 00000000000..ed0bdbb52ea
--- /dev/null
+++ b/test/jdk/jdk/nio/zipfs/EndOfCenValidation.java
@@ -0,0 +1,150 @@
+/*
+ * Copyright (c) 2023, 2026, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/* @test
+ * @modules java.base/jdk.internal.util
+ * @summary Verify that ZipFileSystem rejects files with CEN sizes exceeding the implementation limit
+ * @library /test/lib
+ * @build jdk.test.lib.util.ZipUtils
+ * @run junit/othervm EndOfCenValidation
+ */
+
+import jdk.internal.util.ArraysSupport;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.ValueSource;
+
+import java.io.IOException;
+import java.nio.file.FileSystems;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.zip.ZipException;
+
+import static jdk.test.lib.util.ZipUtils.*;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+/**
+ * This test augments {@link TestTooManyEntries}. It creates sparse ZIPs where
+ * the CEN size is inflated to the desired value. This helps this test run
+ * fast with much less resources.
+ *
+ * While the CEN in these files are zero-filled and the produced ZIPs are technically
+ * invalid, the CEN is never actually read by ZipFileSystem since it does
+ * 'End of central directory record' (END header) validation before reading the CEN.
+ */
+public class EndOfCenValidation {
+
+    // Zip files produced by this test
+    static final Path CEN_TOO_LARGE_ZIP = Path.of("cen-size-too-large.zip");
+    static final Path INVALID_CEN_SIZE = Path.of("invalid-zen-size.zip");
+    static final Path BAD_CEN_OFFSET_ZIP = Path.of("bad-cen-offset.zip");
+    static final Path BAD_ENTRY_COUNT_ZIP = Path.of("bad-entry-count.zip");
+
+    // Maximum allowed CEN size allowed by ZipFileSystem
+    static final int MAX_CEN_SIZE = ArraysSupport.SOFT_MAX_ARRAY_LENGTH;
+
+    /**
+     * Delete big files after test, in case the file system did not support sparse files.
+     * @throws IOException if an error occurs
+     */
+    @AfterEach
+    public void cleanup() throws IOException {
+        Files.deleteIfExists(CEN_TOO_LARGE_ZIP);
+        Files.deleteIfExists(INVALID_CEN_SIZE);
+        Files.deleteIfExists(BAD_CEN_OFFSET_ZIP);
+        Files.deleteIfExists(BAD_ENTRY_COUNT_ZIP);
+    }
+
+    /**
+     * Validates that an 'End of central directory record' (END header) with a CEN
+     * length exceeding {@link #MAX_CEN_SIZE} limit is rejected
+     * @throws IOException if an error occurs
+     */
+    @Test
+    public void shouldRejectTooLargeCenSize() throws IOException {
+        int size = MAX_CEN_SIZE + 1;
+        Path zip = zipWithModifiedEndRecord(size, true, 0, CEN_TOO_LARGE_ZIP);
+        verifyRejection(zip, INVALID_CEN_SIZE_TOO_LARGE);
+    }
+
+    /**
+     * Validate that an 'End of central directory record' (END header)
+     * where the value of the CEN size field exceeds the position of
+     * the END header is rejected.
+     * @throws IOException if an error occurs
+     */
+    @Test
+    public void shouldRejectInvalidCenSize() throws IOException {
+        int size = MAX_CEN_SIZE;
+        Path zip = zipWithModifiedEndRecord(size, false, 0, INVALID_CEN_SIZE);
+        verifyRejection(zip, INVALID_CEN_BAD_SIZE);
+    }
+
+    /**
+     * Validate that an 'End of central directory record' (the END header)
+     * where the value of the CEN offset field is larger than the position
+     * of the END header minus the CEN size is rejected
+     * @throws IOException if an error occurs
+     */
+    @Test
+    public void shouldRejectInvalidCenOffset() throws IOException {
+        int size = MAX_CEN_SIZE;
+        Path zip = zipWithModifiedEndRecord(size, true, 100, BAD_CEN_OFFSET_ZIP);
+        verifyRejection(zip, INVALID_CEN_BAD_OFFSET);
+    }
+
+    /**
+     * Validate that a 'Zip64 End of Central Directory' record (the END header)
+     * where the value of the 'total entries' field is larger than what fits
+     * in the CEN size is rejected.
+     *
+     * @throws IOException if an error occurs
+     */
+    @ParameterizedTest
+    @ValueSource(longs = {
+            -1,                   // Negative
+            Long.MIN_VALUE,       // Very negative
+            0x3B / 3L - 1,        // Cannot fit in test ZIP's CEN
+            MAX_CEN_SIZE / 3 + 1, // Too large to allocate int[] entries array
+            Long.MAX_VALUE        // Unreasonably large
+    })
+    public void shouldRejectBadTotalEntries(long totalEntries) throws IOException {
+        Path zip = zip64WithModifiedTotalEntries(BAD_ENTRY_COUNT_ZIP, totalEntries);
+        verifyRejection(zip, INVALID_BAD_ENTRY_COUNT);
+    }
+
+    /**
+     * Verify that ZipFileSystem.newFileSystem rejects the ZIP file with a ZipException
+     * with the given message
+     * @param zip ZIP file to open
+     * @param msg exception message to expect
+     */
+    private static void verifyRejection(Path zip, String msg) {
+        ZipException ex = assertThrows(ZipException.class, () -> {
+            FileSystems.newFileSystem(zip);
+        });
+        assertEquals(msg, ex.getMessage());
+    }
+}
diff --git a/test/jdk/sun/security/ssl/SSLSocketImpl/SSLSocketReset.java b/test/jdk/sun/security/ssl/SSLSocketImpl/SSLSocketReset.java
index 6b0f365edc7..64779facd26 100644
--- a/test/jdk/sun/security/ssl/SSLSocketImpl/SSLSocketReset.java
+++ b/test/jdk/sun/security/ssl/SSLSocketImpl/SSLSocketReset.java
@@ -21,16 +21,14 @@
  * questions.
  */
 
-//
-// Please run in othervm mode.  SunJSSE does not support dynamic system
-// properties, no way to re-use system properties in samevm/agentvm mode.
-//
-
 /*
  * @test
  * @bug 8268965
  * @summary Socket reset issue for TLS socket close
- * @run main/othervm -Djdk.net.usePlainSocketImpl=true SSLSocketReset
+ * @comment The test uses SSLContext.getDefault(), so we use othervm to prevent
+ *          usage of unexpected default SSLContext that might be set by some
+ *          other test
+ * @run main/othervm SSLSocketReset
  */
 
 import javax.net.ssl.*;
diff --git a/test/jdk/tools/jpackage/TEST.properties b/test/jdk/tools/jpackage/TEST.properties
index 19eda305364..5cc4aa7a1b9 100644
--- a/test/jdk/tools/jpackage/TEST.properties
+++ b/test/jdk/tools/jpackage/TEST.properties
@@ -13,7 +13,7 @@ maxOutputSize = 2000000
 # Run jpackage tests on windows platform sequentially.
 # Having "share" directory in the list affects tests on other platforms.
 # The better option would be:
-#   if (platfrom == windowws) {
+#   if (platfrom == windows) {
 #     exclusiveAccess.dirs=share windows
 #   }
 # but conditionals are not supported by jtreg configuration files.
@@ -29,4 +29,6 @@ modules = \
     jdk.jpackage/jdk.jpackage.internal.util.function \
     jdk.jpackage/jdk.jpackage.internal.resources:+open \
     java.base/jdk.internal.util \
+    java.base/sun.security.util \
+    java.base/sun.security.x509 \
     jdk.jlink/jdk.tools.jlink.internal
diff --git a/test/jdk/tools/jpackage/helpers-test/jdk/jpackage/test/MacHelperTest.java b/test/jdk/tools/jpackage/helpers-test/jdk/jpackage/test/MacHelperTest.java
index 5d14f021eaf..b8f7bfd456e 100644
--- a/test/jdk/tools/jpackage/helpers-test/jdk/jpackage/test/MacHelperTest.java
+++ b/test/jdk/tools/jpackage/helpers-test/jdk/jpackage/test/MacHelperTest.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2025, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -31,14 +31,20 @@ import java.io.UncheckedIOException;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
+import java.util.Objects;
+import java.util.Optional;
+import java.util.function.Function;
+import java.util.stream.Stream;
 import jdk.jpackage.internal.util.PListReader;
 import jdk.jpackage.internal.util.XmlUtils;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.MethodSource;
 import org.w3c.dom.Node;
 import org.xml.sax.InputSource;
 import org.xml.sax.SAXException;
 
-public class MacHelperTest {
+public class MacHelperTest extends JUnitAdapter {
 
     @Test
     public void test_flatMapPList() {
@@ -105,6 +111,18 @@ public class MacHelperTest {
         ), props);
     }
 
+    @ParameterizedTest
+    @MethodSource
+    public void test_appImageSigned(SignedTestSpec spec) {
+        spec.test(MacHelper::appImageSigned);
+    }
+
+    @ParameterizedTest
+    @MethodSource
+    public void test_nativePackageSigned(SignedTestSpec spec) {
+        spec.test(MacHelper::nativePackageSigned);
+    }
+
     private static String createPListXml(String ...xml) {
         final List<String> content = new ArrayList<>();
         content.add("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
@@ -125,4 +143,126 @@ public class MacHelperTest {
             throw new RuntimeException(ex);
         }
     }
+
+    private static Stream<SignedTestSpec> test_appImageSigned() {
+
+        List<SignedTestSpec.Builder> data = new ArrayList<>();
+
+        for (var signingIdentityOption : List.of(
+                List.<String>of(),
+                List.of("--mac-signing-key-user-name", "foo"),
+                List.of("--mac-app-image-sign-identity", "foo"),
+                List.of("--mac-installer-sign-identity", "foo"),
+                List.of("--mac-installer-sign-identity", "foo", "--mac-app-image-sign-identity", "bar")
+        )) {
+            for (var type : List.of(PackageType.IMAGE, PackageType.MAC_DMG, PackageType.MAC_PKG)) {
+                for (var withMacSign : List.of(true, false)) {
+                    if (signingIdentityOption.contains("--mac-installer-sign-identity") && type != PackageType.MAC_PKG) {
+                        continue;
+                    }
+
+                    var builder = SignedTestSpec.build().type(type).cmdline(signingIdentityOption);
+                    if (withMacSign) {
+                        builder.cmdline("--mac-sign");
+                        if (Stream.of(
+                                "--mac-signing-key-user-name",
+                                "--mac-app-image-sign-identity"
+                        ).anyMatch(signingIdentityOption::contains) || signingIdentityOption.isEmpty()) {
+                            builder.signed();
+                        }
+                    }
+
+                    data.add(builder);
+                }
+            }
+        }
+
+        return data.stream().map(SignedTestSpec.Builder::create);
+    }
+
+    private static Stream<SignedTestSpec> test_nativePackageSigned() {
+
+        List<SignedTestSpec.Builder> data = new ArrayList<>();
+
+        for (var signingIdentityOption : List.of(
+                List.<String>of(),
+                List.of("--mac-signing-key-user-name", "foo"),
+                List.of("--mac-app-image-sign-identity", "foo"),
+                List.of("--mac-installer-sign-identity", "foo"),
+                List.of("--mac-installer-sign-identity", "foo", "--mac-app-image-sign-identity", "bar")
+        )) {
+            for (var type : List.of(PackageType.MAC_DMG, PackageType.MAC_PKG)) {
+                for (var withMacSign : List.of(true, false)) {
+                    if (signingIdentityOption.contains("--mac-installer-sign-identity") && type != PackageType.MAC_PKG) {
+                        continue;
+                    }
+
+                    var builder = SignedTestSpec.build().type(type).cmdline(signingIdentityOption);
+                    if (withMacSign) {
+                        builder.cmdline("--mac-sign");
+                        if (type == PackageType.MAC_PKG && (Stream.of(
+                                "--mac-signing-key-user-name",
+                                "--mac-installer-sign-identity"
+                        ).anyMatch(signingIdentityOption::contains) || signingIdentityOption.isEmpty())) {
+                            builder.signed();
+                        }
+                    }
+
+                    data.add(builder);
+                }
+            }
+        }
+
+        return data.stream().map(SignedTestSpec.Builder::create);
+    }
+
+    private record SignedTestSpec(boolean expectedSigned, PackageType type, List<String> cmdline) {
+
+        SignedTestSpec {
+            Objects.requireNonNull(type);
+            cmdline.forEach(Objects::requireNonNull);
+        }
+
+        void test(Function<JPackageCommand, Boolean> func) {
+            var actualSigned = func.apply((new JPackageCommand().addArguments(cmdline).setPackageType(type)));
+            assertEquals(expectedSigned, actualSigned);
+        }
+
+        static Builder build() {
+            return new Builder();
+        }
+
+        static final class Builder {
+
+            SignedTestSpec create() {
+                return new SignedTestSpec(
+                        expectedSigned,
+                        Optional.ofNullable(type).orElse(PackageType.IMAGE),
+                        cmdline);
+            }
+
+            Builder signed() {
+                expectedSigned = true;
+                return this;
+            }
+
+            Builder type(PackageType v) {
+                type = v;
+                return this;
+            }
+
+            Builder cmdline(String... args) {
+                return cmdline(List.of(args));
+            }
+
+            Builder cmdline(List<String> v) {
+                cmdline.addAll(v);
+                return this;
+            }
+
+            private boolean expectedSigned;
+            private PackageType type;
+            private List<String> cmdline = new ArrayList<>();
+        }
+    }
 }
diff --git a/test/jdk/tools/jpackage/helpers/jdk/jpackage/test/JPackageCommand.java b/test/jdk/tools/jpackage/helpers/jdk/jpackage/test/JPackageCommand.java
index da6af4bed33..251d95a1089 100644
--- a/test/jdk/tools/jpackage/helpers/jdk/jpackage/test/JPackageCommand.java
+++ b/test/jdk/tools/jpackage/helpers/jdk/jpackage/test/JPackageCommand.java
@@ -1292,7 +1292,7 @@ public class JPackageCommand extends CommandArguments<JPackageCommand> {
             }
         }),
         MAC_BUNDLE_UNSIGNED_SIGNATURE(cmd -> {
-            if (TKit.isOSX() && !MacHelper.appImageSigned(cmd)) {
+            if (TKit.isOSX()) {
                 MacHelper.verifyUnsignedBundleSignature(cmd);
             }
         }),
@@ -1316,7 +1316,14 @@ public class JPackageCommand extends CommandArguments<JPackageCommand> {
         }),
         PREDEFINED_APP_IMAGE_COPY(cmd -> {
             Optional.ofNullable(cmd.getArgumentValue("--app-image")).filter(_ -> {
-                return !TKit.isOSX() || !MacHelper.signPredefinedAppImage(cmd);
+                if (!TKit.isOSX() || !cmd.hasArgument("--mac-sign")) {
+                    return true;
+                } else {
+                    var signAppImage = MacHelper.signPredefinedAppImage(cmd)
+                            || MacHelper.hasAppImageSignIdentity(cmd)
+                            || MacHelper.isSignWithoutSignIdentity(cmd);
+                    return !signAppImage;
+                }
             }).filter(_ -> {
                 // Don't examine the contents of the output app image if this is Linux package installing in the "/usr" subtree.
                 return Optional.<Boolean>ofNullable(cmd.onLinuxPackageInstallDir(null, _ -> false)).orElse(true);
diff --git a/test/jdk/tools/jpackage/helpers/jdk/jpackage/test/MacHelper.java b/test/jdk/tools/jpackage/helpers/jdk/jpackage/test/MacHelper.java
index 1191cd02221..1372058d440 100644
--- a/test/jdk/tools/jpackage/helpers/jdk/jpackage/test/MacHelper.java
+++ b/test/jdk/tools/jpackage/helpers/jdk/jpackage/test/MacHelper.java
@@ -76,6 +76,7 @@ import jdk.jpackage.internal.util.RetryExecutor;
 import jdk.jpackage.internal.util.XmlUtils;
 import jdk.jpackage.internal.util.function.ThrowingConsumer;
 import jdk.jpackage.internal.util.function.ThrowingSupplier;
+import jdk.jpackage.test.MacSign.CertificateHash;
 import jdk.jpackage.test.MacSign.CertificateRequest;
 import jdk.jpackage.test.MacSign.CertificateType;
 import jdk.jpackage.test.MacSign.ResolvedKeychain;
@@ -259,10 +260,7 @@ public final class MacHelper {
      *         predefined app image in place and {@code false} otherwise.
      */
     public static boolean signPredefinedAppImage(JPackageCommand cmd) {
-        Objects.requireNonNull(cmd);
-        if (!TKit.isOSX()) {
-            throw new UnsupportedOperationException();
-        }
+        cmd.verifyIsOfType(PackageType.MAC_DMG, PackageType.MAC_PKG, PackageType.IMAGE);
         return cmd.hasArgument("--mac-sign") && cmd.hasArgument("--app-image") && cmd.isImagePackageType();
     }
 
@@ -279,10 +277,7 @@ public final class MacHelper {
      *         otherwise.
      */
     public static boolean appImageSigned(JPackageCommand cmd) {
-        Objects.requireNonNull(cmd);
-        if (!TKit.isOSX()) {
-            throw new UnsupportedOperationException();
-        }
+        cmd.verifyIsOfType(PackageType.MAC_DMG, PackageType.MAC_PKG, PackageType.IMAGE);
 
         var runtimeImageBundle = Optional.ofNullable(cmd.getArgumentValue("--runtime-image")).map(Path::of).flatMap(MacBundle::fromPath);
         var appImage = Optional.ofNullable(cmd.getArgumentValue("--app-image")).map(Path::of);
@@ -291,23 +286,102 @@ public final class MacHelper {
             // If the predefined runtime is a signed bundle, bundled image should be signed too.
             return true;
         } else if (appImage.map(MacHelper::isBundleSigned).orElse(false)) {
-            // The external app image is signed, so the app image is signed too.
+            // The predefined app image is signed, so the app image is signed too.
             return true;
         }
 
-        if (!cmd.isImagePackageType() && appImage.isPresent()) {
-            // Building a ".pkg" or a ".dmg" bundle from the predefined app image.
-            // The predefined app image is unsigned, so the app image bundled
-            // in the output native package will be unsigned too
-            // (even if the ".pkg" file may be signed itself, and we never sign ".dmg" files).
-            return false;
-        }
-
         if (!cmd.hasArgument("--mac-sign")) {
             return false;
+        } else {
+            return isSignWithoutSignIdentity(cmd) || hasAppImageSignIdentity(cmd);
         }
+    }
 
-        return (cmd.hasArgument("--mac-signing-key-user-name") || cmd.hasArgument("--mac-app-image-sign-identity"));
+    /**
+     * Returns {@code true} if the given jpackage command line is configured such
+     * that the native package it will produce will be signed.
+     *
+     * @param cmd the jpackage command to examine
+     * @return {@code true} if the given jpackage command line is configured such
+     *         the native package it will produce will be signed and {@code false}
+     *         otherwise.
+     */
+    public static boolean nativePackageSigned(JPackageCommand cmd) {
+        cmd.verifyIsOfType(PackageType.MAC);
+
+        switch (cmd.packageType()) {
+            case MAC_DMG -> {
+                return false;
+            }
+            case MAC_PKG -> {
+                if (!cmd.hasArgument("--mac-sign")) {
+                    return false;
+                } else {
+                    return isSignWithoutSignIdentity(cmd) || hasPkgInstallerSignIdentity(cmd);
+                }
+            }
+            default -> {
+                throw new IllegalStateException();
+            }
+        }
+    }
+
+    /**
+     * Returns {@code true} if the given jpackage command line has app image signing
+     * identity option. The command line must have "--mac-sign" option.
+     *
+     * @param cmd the jpackage command to examine
+     * @return {@code true} if the given jpackage command line has app image signing
+     *         identity option and {@code false} otherwise.
+     */
+    public static boolean hasAppImageSignIdentity(JPackageCommand cmd) {
+        cmd.verifyIsOfType(PackageType.MAC_DMG, PackageType.MAC_PKG, PackageType.IMAGE);
+        if (!cmd.hasArgument("--mac-sign")) {
+            throw new IllegalArgumentException();
+        }
+        return Stream.of(
+                "--mac-signing-key-user-name",
+                "--mac-app-image-sign-identity"
+        ).anyMatch(cmd::hasArgument);
+    }
+
+    /**
+     * Returns {@code true} if the given jpackage command line has PKG installer signing
+     * identity option. The command line must have "--mac-sign" option.
+     *
+     * @param cmd the jpackage command to examine
+     * @return {@code true} if the given jpackage command line has PKG installer signing
+     *         identity option and {@code false} otherwise.
+     */
+    public static boolean hasPkgInstallerSignIdentity(JPackageCommand cmd) {
+        cmd.verifyIsOfType(PackageType.MAC_PKG);
+        if (!cmd.hasArgument("--mac-sign")) {
+            throw new IllegalArgumentException();
+        }
+        return Stream.of(
+                "--mac-signing-key-user-name",
+                "--mac-installer-sign-identity"
+        ).anyMatch(cmd::hasArgument);
+    }
+
+    /**
+     * Returns {@code true} if the given jpackage command line doesn't have signing
+     * identity options. The command line must have "--mac-sign" option.
+     *
+     * @param cmd the jpackage command to examine
+     * @return {@code true} if the given jpackage command line doesn't have signing
+     *         identity options and {@code false} otherwise.
+     */
+    public static boolean isSignWithoutSignIdentity(JPackageCommand cmd) {
+        cmd.verifyIsOfType(PackageType.MAC_DMG, PackageType.MAC_PKG, PackageType.IMAGE);
+        if (!cmd.hasArgument("--mac-sign")) {
+            throw new IllegalArgumentException();
+        }
+        return Stream.of(
+                "--mac-signing-key-user-name",
+                "--mac-app-image-sign-identity",
+                "--mac-installer-sign-identity"
+        ).noneMatch(cmd::hasArgument);
     }
 
     public static void writeFaPListFragment(JPackageCommand cmd, XMLStreamWriter xml) {
@@ -702,6 +776,14 @@ public final class MacHelper {
                     MacSign.CertificateType.CODE_SIGN, Name.KEY_IDENTITY_APP_IMAGE,
                     MacSign.CertificateType.INSTALLER, Name.KEY_IDENTITY_INSTALLER)),
 
+            /**
+             * "--mac-installer-sign-identity" or "--mac-app-image-sign-identity" option
+             * with the SHA1 of a signing certificate
+             */
+            SIGN_KEY_IDENTITY_SHA1(Map.of(
+                    MacSign.CertificateType.CODE_SIGN, Name.KEY_IDENTITY_APP_IMAGE,
+                    MacSign.CertificateType.INSTALLER, Name.KEY_IDENTITY_INSTALLER)),
+
             /**
              * "--mac-app-image-sign-identity" regardless of the type of signing identity
              * (for signing app image or .pkg installer).
@@ -714,6 +796,12 @@ public final class MacHelper {
              */
             SIGN_KEY_IDENTITY_INSTALLER(Name.KEY_IDENTITY_INSTALLER),
 
+            /**
+             * No explicit option specifying signing identity. jpackage will pick one from
+             * the specified keychain.
+             */
+            SIGN_KEY_IMPLICIT,
+
             ;
 
             Type(Map<MacSign.CertificateType, Name> optionNameMap) {
@@ -736,11 +824,24 @@ public final class MacHelper {
                 return optionNameMapper.apply(Objects.requireNonNull(certType));
             }
 
+            public boolean passThrough() {
+                return Stream.of(MacSign.CertificateType.values())
+                        .map(this::mapOptionName)
+                        .flatMap(Optional::stream)
+                        .map(Name::passThrough)
+                        .distinct()
+                        .reduce((_, _) -> {
+                            throw new IllegalStateException();
+                        }).orElse(false);
+            }
+
             public static Type[] defaultValues() {
                 return new Type[] {
                         SIGN_KEY_USER_SHORT_NAME,
                         SIGN_KEY_USER_FULL_NAME,
-                        SIGN_KEY_IDENTITY
+                        SIGN_KEY_IDENTITY,
+                        SIGN_KEY_IDENTITY_SHA1,
+                        SIGN_KEY_IMPLICIT
                 };
             }
 
@@ -751,7 +852,7 @@ public final class MacHelper {
         public String toString() {
             var sb = new StringBuilder();
             sb.append('{');
-            applyTo((optionName, _) -> {
+            type.mapOptionName(certRequest.type()).ifPresent(optionName -> {
                 sb.append(optionName);
                 switch (type) {
                     case SIGN_KEY_USER_FULL_NAME -> {
@@ -762,6 +863,9 @@ public final class MacHelper {
                             sb.append("=").append(ENQUOTER.applyTo(optionValue));
                         });
                     }
+                    case SIGN_KEY_IDENTITY_SHA1 -> {
+                        sb.append("/sha1");
+                    }
                     default -> {
                         // NOP
                     }
@@ -787,12 +891,16 @@ public final class MacHelper {
         }
 
         public List<String> asCmdlineArgs() {
-            String[] args = new String[2];
-            applyTo((optionName, optionValue) -> {
-                args[0] = optionName;
-                args[1] = optionValue;
-            });
-            return List.of(args);
+            if (type == Type.SIGN_KEY_IMPLICIT) {
+                return List.of();
+            } else {
+                String[] args = new String[2];
+                applyTo((optionName, optionValue) -> {
+                    args[0] = optionName;
+                    args[1] = optionValue;
+                });
+                return List.of(args);
+            }
         }
 
         public Optional<Boolean> passThrough() {
@@ -817,6 +925,9 @@ public final class MacHelper {
                     case SIGN_KEY_USER_SHORT_NAME -> {
                         return certRequest.shortName();
                     }
+                    case SIGN_KEY_IDENTITY_SHA1 -> {
+                        return CertificateHash.of(certRequest.cert()).toString();
+                    }
                     default -> {
                         throw new IllegalStateException();
                     }
@@ -960,18 +1071,21 @@ public final class MacHelper {
     }
 
     static void verifyUnsignedBundleSignature(JPackageCommand cmd) {
-        if (!cmd.isImagePackageType()) {
+
+        if (!cmd.isImagePackageType() && !nativePackageSigned(cmd)) {
             MacSignVerify.assertUnsigned(cmd.outputBundle());
         }
 
-        final Path bundleRoot;
-        if (cmd.isImagePackageType()) {
-            bundleRoot = cmd.outputBundle();
-        } else {
-            bundleRoot = cmd.pathToUnpackedPackageFile(cmd.appInstallationDirectory());
-        }
+        if (!appImageSigned(cmd)) {
+            final Path bundleRoot;
+            if (cmd.isImagePackageType()) {
+                bundleRoot = cmd.outputBundle();
+            } else {
+                bundleRoot = cmd.pathToUnpackedPackageFile(cmd.appInstallationDirectory());
+            }
 
-        MacSignVerify.assertAdhocSigned(bundleRoot);
+            MacSignVerify.assertAdhocSigned(bundleRoot);
+        }
     }
 
     static PackageHandlers createDmgPackageHandlers() {
diff --git a/test/jdk/tools/jpackage/helpers/jdk/jpackage/test/MacSign.java b/test/jdk/tools/jpackage/helpers/jdk/jpackage/test/MacSign.java
index 4dbb2bc1e18..20f7ac41eef 100644
--- a/test/jdk/tools/jpackage/helpers/jdk/jpackage/test/MacSign.java
+++ b/test/jdk/tools/jpackage/helpers/jdk/jpackage/test/MacSign.java
@@ -63,9 +63,11 @@ import java.util.concurrent.TimeUnit;
 import java.util.function.Consumer;
 import java.util.function.Function;
 import java.util.function.Predicate;
+import java.util.function.Supplier;
 import java.util.stream.Stream;
 import javax.naming.ldap.LdapName;
 import javax.naming.ldap.Rdn;
+import jdk.jpackage.internal.util.MemoizingSupplier;
 import jdk.jpackage.internal.util.function.ExceptionBox;
 import jdk.jpackage.internal.util.function.ThrowingConsumer;
 import jdk.jpackage.internal.util.function.ThrowingSupplier;
@@ -280,8 +282,15 @@ public final class MacSign {
             return sb.toString();
         }
 
+        public static Builder build() {
+            return new Builder();
+        }
+
         public static final class Builder {
 
+            private Builder() {
+            }
+
             public Builder name(String v) {
                 keychainBuilder.name(v);
                 return this;
@@ -306,8 +315,8 @@ public final class MacSign {
                 return new KeychainWithCertsSpec(keychain, List.copyOf(certs));
             }
 
-            private Keychain.Builder keychainBuilder = new Keychain.Builder();
-            private List<CertificateRequest> certs = new ArrayList<>();
+            private final Keychain.Builder keychainBuilder = Keychain.build();
+            private final List<CertificateRequest> certs = new ArrayList<>();
         }
     }
 
@@ -326,8 +335,15 @@ public final class MacSign {
             }
         }
 
+        public static Builder build() {
+            return new Builder();
+        }
+
         public static final class Builder {
 
+            private Builder() {
+            }
+
             public Builder name(String v) {
                 name = v;
                 return this;
@@ -599,12 +615,7 @@ public final class MacSign {
 
         @Override
         public String toString() {
-            final var sb = new StringBuilder();
-            sb.append(frame("BEGIN " + label));
-            sb.append(ENCODER.encodeToString(data));
-            sb.append("\n");
-            sb.append(frame("END " + label));
-            return sb.toString();
+            return PemDataFormatter.format(label, data);
         }
 
         static PemData of(X509Certificate cert) {
@@ -619,6 +630,21 @@ public final class MacSign {
                 throw new UncheckedIOException(ex);
             }
         }
+    }
+
+    private final class PemDataFormatter {
+
+        static String format(String label, byte[] data) {
+            Objects.requireNonNull(label);
+            Objects.requireNonNull(data);
+
+            final var sb = new StringBuilder();
+            sb.append(frame("BEGIN " + label));
+            sb.append(ENCODER.encodeToString(data));
+            sb.append("\n");
+            sb.append(frame("END " + label));
+            return sb.toString();
+        }
 
         private static String frame(String str) {
             return String.format("-----%s-----\n", Objects.requireNonNull(str));
@@ -627,6 +653,11 @@ public final class MacSign {
         private static final Base64.Encoder ENCODER = Base64.getMimeEncoder(64, "\n".getBytes());
     }
 
+    public static String formatX509Certificate(X509Certificate cert) {
+        Objects.requireNonNull(cert);
+        return PemDataFormatter.format("CERTIFICATE", toSupplier(cert::getEncoded).get());
+    }
+
     public enum DigestAlgorithm {
         SHA1(20, () -> MessageDigest.getInstance("SHA-1")),
         SHA256(32, () -> MessageDigest.getInstance("SHA-256"));
@@ -773,8 +804,15 @@ public final class MacSign {
             return COMPARATOR.compare(this, o);
         }
 
+        public static Builder build() {
+            return new Builder();
+        }
+
         public static final class Builder {
 
+            private Builder() {
+            }
+
             public Builder userName(String v) {
                 userName = v;
                 return this;
@@ -1068,6 +1106,15 @@ public final class MacSign {
         return !missingKeychain && !missingCertificates && !invalidCertificates;
     }
 
+    /**
+     * Creates an empty keychain with unique name in the work directory of the current test.
+     */
+    public static Keychain createEmptyKeychain() {
+        return Keychain.build()
+                .name(TKit.createUniquePath(TKit.workDir().resolve("empty.keychain")).toAbsolutePath().toString())
+                .create().create();
+    }
+
     public static Keychain.UsageBuilder withKeychains(KeychainWithCertsSpec... keychains) {
         return withKeychains(Stream.of(keychains).map(KeychainWithCertsSpec::keychain).toArray(Keychain[]::new));
     }
@@ -1100,9 +1147,14 @@ public final class MacSign {
 
     public static void withKeychain(Consumer<ResolvedKeychain> consumer, Consumer<Keychain.UsageBuilder> mutator, ResolvedKeychain keychain) {
         Objects.requireNonNull(consumer);
-        withKeychains(() -> {
+        Objects.requireNonNull(mutator);
+        if (keychain.isMock()) {
             consumer.accept(keychain);
-        }, mutator, keychain.spec().keychain());
+        } else {
+            withKeychains(() -> {
+                consumer.accept(keychain);
+            }, mutator, keychain.spec().keychain());
+        }
     }
 
     public static void withKeychain(Consumer<ResolvedKeychain> consumer, ResolvedKeychain keychain) {
@@ -1111,7 +1163,15 @@ public final class MacSign {
 
     public static final class ResolvedKeychain {
         public ResolvedKeychain(KeychainWithCertsSpec spec) {
+            isMock = false;
             this.spec = Objects.requireNonNull(spec);
+            certMapSupplier = MemoizingSupplier.runOnce(() -> {
+                return MacSign.mapCertificateRequests(spec);
+            });
+        }
+
+        public static ResolvedKeychain createMock(String name, Map<CertificateRequest, X509Certificate> certs) {
+            return new ResolvedKeychain(name, certs);
         }
 
         public KeychainWithCertsSpec spec() {
@@ -1122,15 +1182,30 @@ public final class MacSign {
             return spec.keychain().name();
         }
 
-        public Map<CertificateRequest, X509Certificate> mapCertificateRequests() {
-            if (certMap == null) {
-                synchronized (this) {
-                    if (certMap == null) {
-                        certMap = MacSign.mapCertificateRequests(spec);
-                    }
-                }
+        public boolean isMock() {
+            return isMock;
+        }
+
+        public ResolvedKeychain toMock(Map<CertificateRequest, X509Certificate> signEnv) {
+            if (isMock) {
+                throw new UnsupportedOperationException("Already a mock");
             }
-            return certMap;
+
+            var comm = Comm.compare(Set.copyOf(spec.certificateRequests()), signEnv.keySet());
+            if (!comm.unique1().isEmpty()) {
+                throw new IllegalArgumentException(String.format(
+                        "Signing environment missing %s certificate request mappings in [%s] keychain",
+                        comm.unique1(), name()));
+            }
+
+            var certs = new HashMap<>(signEnv);
+            certs.keySet().retainAll(comm.common());
+
+            return createMock(name(), certs);
+        }
+
+        public Map<CertificateRequest, X509Certificate> mapCertificateRequests() {
+            return certMapSupplier.get();
         }
 
         public Function<CertificateRequest, X509Certificate> asCertificateResolver() {
@@ -1145,8 +1220,23 @@ public final class MacSign {
             };
         }
 
+        private ResolvedKeychain(String name, Map<CertificateRequest, X509Certificate> certs) {
+
+            var keychainBuilder = KeychainWithCertsSpec.build().name(Objects.requireNonNull(name));
+            certs.keySet().forEach(keychainBuilder::addCert);
+
+            var certsCopy = Map.copyOf(Objects.requireNonNull(certs));
+
+            isMock = true;
+            spec = keychainBuilder.create();
+            certMapSupplier = MemoizingSupplier.runOnce(() -> {
+                return certsCopy;
+            });
+        }
+
+        private final boolean isMock;
         private final KeychainWithCertsSpec spec;
-        private volatile Map<CertificateRequest, X509Certificate> certMap;
+        private final Supplier<Map<CertificateRequest, X509Certificate>> certMapSupplier;
     }
 
     private static Map<CertificateRequest, X509Certificate> mapCertificateRequests(KeychainWithCertsSpec spec) {
diff --git a/test/jdk/tools/jpackage/helpers/jdk/jpackage/test/mock/CommandAction.java b/test/jdk/tools/jpackage/helpers/jdk/jpackage/test/mock/CommandAction.java
index d9ab38e006a..c4899a5376f 100644
--- a/test/jdk/tools/jpackage/helpers/jdk/jpackage/test/mock/CommandAction.java
+++ b/test/jdk/tools/jpackage/helpers/jdk/jpackage/test/mock/CommandAction.java
@@ -60,6 +60,36 @@ public interface CommandAction {
         public MockIllegalStateException unexpectedArguments() {
             return new MockIllegalStateException(String.format("Unexpected arguments: %s", args));
         }
+
+        public Context shift(int count) {
+            if (count < 0) {
+                throw new IllegalArgumentException();
+            } else if (count == 0) {
+                return this;
+            } else {
+                return new Context(out, err, args.subList(Integer.min(count, args.size()), args.size()));
+            }
+        }
+
+        public Context shift() {
+            return shift(1);
+        }
+
+        public void printlnOut(Object obj) {
+            out.println(obj);
+        }
+
+        public void printlnOut(String str) {
+            out.println(str);
+        }
+
+        public void printlnErr(Object obj) {
+            err.println(obj);
+        }
+
+        public void printlnErr(String str) {
+            err.println(str);
+        }
     }
 
     /**
diff --git a/test/jdk/tools/jpackage/helpers/jdk/jpackage/test/mock/MockIllegalStateException.java b/test/jdk/tools/jpackage/helpers/jdk/jpackage/test/mock/MockIllegalStateException.java
index 1817587364a..4656e1d4f7b 100644
--- a/test/jdk/tools/jpackage/helpers/jdk/jpackage/test/mock/MockIllegalStateException.java
+++ b/test/jdk/tools/jpackage/helpers/jdk/jpackage/test/mock/MockIllegalStateException.java
@@ -22,13 +22,15 @@
  */
 package jdk.jpackage.test.mock;
 
+import java.util.Objects;
+
 /**
  * Indicates command mock internal error.
  */
 public final class MockIllegalStateException extends IllegalStateException {
 
     public MockIllegalStateException(String msg) {
-        super(msg);
+        super(Objects.requireNonNull(msg));
     }
 
     private static final long serialVersionUID = 1L;
diff --git a/test/jdk/tools/jpackage/helpers/jdk/jpackage/test/stdmock/MacSecurityMock.java b/test/jdk/tools/jpackage/helpers/jdk/jpackage/test/stdmock/MacSecurityMock.java
new file mode 100644
index 00000000000..fe9a67f1889
--- /dev/null
+++ b/test/jdk/tools/jpackage/helpers/jdk/jpackage/test/stdmock/MacSecurityMock.java
@@ -0,0 +1,176 @@
+/*
+ * Copyright (c) 2026, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package jdk.jpackage.test.stdmock;
+
+import java.nio.file.Path;
+import java.security.cert.X509Certificate;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Optional;
+import java.util.function.Predicate;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+import jdk.jpackage.test.MacSign;
+import jdk.jpackage.test.MacSign.CertificateRequest;
+import jdk.jpackage.test.MacSign.ResolvedKeychain;
+import jdk.jpackage.test.mock.CommandAction;
+import jdk.jpackage.test.mock.MockIllegalStateException;
+
+/**
+ * Mocks /usr/bin/security command.
+ */
+final class MacSecurityMock implements CommandAction {
+
+    MacSecurityMock(MacSignMockUtils.SignEnv signEnv) {
+        Objects.requireNonNull(signEnv);
+
+        var keychains = signEnv.keychains();
+
+        var stdUserKeychains = Stream.of(StandardKeychain.values()).map(StandardKeychain::keychainName).filter(name -> {
+            // Add standard keychain unless it is defined in the signing environment.
+            return keychains.stream().noneMatch(keychain -> {
+                return keychain.name().equals(name);
+            });
+        }).map(name -> {
+            // Assume the standard keychain is empty.
+            return ResolvedKeychain.createMock(name, Map.of());
+        });
+
+        allKnownKeychains = Stream.of(
+                stdUserKeychains,
+                keychains.stream()
+        ).flatMap(x -> x).collect(Collectors.toUnmodifiableMap(ResolvedKeychain::name, x -> x));
+
+        currentKeychains.addAll(Stream.of(StandardKeychain.values())
+                .map(StandardKeychain::keychainName)
+                .map(allKnownKeychains::get)
+                .map(Objects::requireNonNull).toList());
+    }
+
+    @Override
+    public Optional<Integer> run(Context context) {
+        switch (context.args().getFirst()) {
+            case "list-keychains" -> {
+                listKeychains(context.shift());
+                return Optional.of(0);
+            }
+            case "find-certificate" -> {
+                findCertificate(context.shift());
+                return Optional.of(0);
+            }
+            default -> {
+                throw context.unexpectedArguments();
+            }
+        }
+    }
+
+    private void listKeychains(Context context) {
+        if (context.args().getFirst().equals("-s")) {
+            currentKeychains.clear();
+            currentKeychains.addAll(context.shift().args().stream().map(name -> {
+                return Optional.ofNullable(allKnownKeychains.get(name)).orElseThrow(() -> {
+                    throw new MockIllegalStateException(String.format("Unknown keychain name: %s", name));
+                });
+            }).toList());
+        } else if (context.args().isEmpty()) {
+            currentKeychains.stream().map(keychain -> {
+                return String.format("  \"%s\"", keychain.name());
+            }).forEach(context::printlnOut);
+        } else {
+            throw context.unexpectedArguments();
+        }
+    }
+
+    private void findCertificate(Context context) {
+
+        var args = new ArrayList<>(context.args());
+        for (var mandatoryArg : List.of("-p", "-a")) {
+            if (!args.remove(mandatoryArg)) {
+                throw context.unexpectedArguments();
+            }
+        }
+
+        var certNameFilter = context.findOptionValue("-c").map(certNameSubstr -> {
+
+            // Remove option name and its value.
+            var idx = args.indexOf("-c");
+            args.remove(idx);
+            args.remove(idx);
+
+            Predicate<Map.Entry<CertificateRequest, X509Certificate>> pred = e -> {
+                return e.getKey().name().contains(certNameSubstr);
+            };
+            return pred;
+        });
+
+        Stream<ResolvedKeychain> keychains;
+        if (args.isEmpty()) {
+            keychains = currentKeychains.stream();
+        } else {
+            // Remaining arguments must be keychain names.
+            keychains = args.stream().map(keychainName -> {
+                return Optional.ofNullable(allKnownKeychains.get(keychainName)).orElseThrow(() -> {
+                    throw new MockIllegalStateException(String.format("Unknown keychain name: %s", keychainName));
+                });
+            });
+        }
+
+        var certStream = keychains.flatMap(keychain -> {
+            return keychain.mapCertificateRequests().entrySet().stream();
+        });
+
+        if (certNameFilter.isPresent()) {
+            certStream = certStream.filter(certNameFilter.get());
+        }
+
+        certStream.map(Map.Entry::getValue).map(MacSign::formatX509Certificate).forEach(formattedCert -> {
+            context.out().print(formattedCert);
+        });
+    }
+
+    // Keep the order of the items as the corresponding keychains appear
+    // in the output of the "/usr/bin/security list-keychains" command.
+    private enum StandardKeychain {
+        USER_KEYCHAIN {
+            @Override
+            String keychainName() {
+                return Path.of(System.getProperty("user.home")).resolve("Library/Keychains/login.keychain-db").toString();
+            }
+        },
+        SYSTEM_KEYCHAIN {
+            @Override
+            String keychainName() {
+                return "/Library/Keychains/System.keychain";
+            }
+        },
+        ;
+
+        abstract String keychainName();
+    }
+
+    private final List<ResolvedKeychain> currentKeychains = new ArrayList<ResolvedKeychain>();
+    private final Map<String, ResolvedKeychain> allKnownKeychains;
+}
diff --git a/test/jdk/tools/jpackage/helpers/jdk/jpackage/test/stdmock/MacSignMockUtils.java b/test/jdk/tools/jpackage/helpers/jdk/jpackage/test/stdmock/MacSignMockUtils.java
new file mode 100644
index 00000000000..164261a6000
--- /dev/null
+++ b/test/jdk/tools/jpackage/helpers/jdk/jpackage/test/stdmock/MacSignMockUtils.java
@@ -0,0 +1,284 @@
+/*
+ * Copyright (c) 2026, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package jdk.jpackage.test.stdmock;
+
+import static jdk.jpackage.internal.util.function.ExceptionBox.toUnchecked;
+import static jdk.jpackage.internal.util.function.ThrowingFunction.toFunction;
+import static jdk.jpackage.internal.util.function.ThrowingRunnable.toRunnable;
+import static jdk.jpackage.internal.util.function.ThrowingSupplier.toSupplier;
+
+import java.io.IOException;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Method;
+import java.math.BigInteger;
+import java.security.KeyPair;
+import java.security.KeyPairGenerator;
+import java.security.NoSuchAlgorithmException;
+import java.security.PrivateKey;
+import java.security.PublicKey;
+import java.security.cert.CertificateException;
+import java.security.cert.X509Certificate;
+import java.time.Duration;
+import java.time.Instant;
+import java.time.LocalDate;
+import java.time.ZoneId;
+import java.util.Collection;
+import java.util.Date;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import java.util.function.Function;
+import java.util.stream.Collectors;
+import jdk.jpackage.internal.util.function.ExceptionBox;
+import jdk.jpackage.test.MacSign.CertificateRequest;
+import jdk.jpackage.test.MacSign.KeychainWithCertsSpec;
+import jdk.jpackage.test.MacSign.ResolvedKeychain;
+import jdk.jpackage.test.mock.CommandActionSpec;
+import jdk.jpackage.test.mock.CommandActionSpecs;
+import jdk.jpackage.test.mock.CommandMockSpec;
+
+
+/**
+ * Utilities to create macOS signing tool mocks.
+ */
+public final class MacSignMockUtils {
+
+    private MacSignMockUtils() {
+    }
+
+    public static Map<CertificateRequest, X509Certificate> resolveCertificateRequests(
+            Collection<CertificateRequest> certificateRequests) {
+        Objects.requireNonNull(certificateRequests);
+
+        var caKeys = createKeyPair();
+
+        Function<CertificateRequest, X509Certificate> resolver = toFunction(certRequest -> {
+            var builder = new CertificateBuilder()
+                    .setSubjectName("CN=" + certRequest.name())
+                    .setPublicKey(caKeys.getPublic())
+                    .setSerialNumber(BigInteger.ONE)
+                    .addSubjectKeyIdExt(caKeys.getPublic())
+                    .addAuthorityKeyIdExt(caKeys.getPublic());
+
+            Instant from;
+            Instant to;
+            if (certRequest.expired()) {
+                from = LocalDate.now().minusDays(10).atStartOfDay(ZoneId.systemDefault()).toInstant();
+                to = from.plus(Duration.ofDays(1));
+            } else {
+                from = LocalDate.now().atStartOfDay(ZoneId.systemDefault()).toInstant();
+                to = from.plus(Duration.ofDays(certRequest.days()));
+            }
+            builder.setValidity(Date.from(from), Date.from(to));
+
+            return builder.build(null, caKeys.getPrivate());
+        });
+
+        return certificateRequests.stream()
+            .distinct()
+            .collect(Collectors.toUnmodifiableMap(x -> x, resolver));
+    }
+
+    public static Map<CertificateRequest, X509Certificate> resolveCertificateRequests(
+            CertificateRequest... certificateRequests) {
+        return resolveCertificateRequests(List.of(certificateRequests));
+    }
+
+    public static final class SignEnv {
+
+        public SignEnv(List<KeychainWithCertsSpec> spec) {
+            Objects.requireNonNull(spec);
+
+            spec.stream().map(keychain -> {
+                return keychain.keychain().name();
+            }).collect(Collectors.toMap(x -> x, x -> x, (a, b) -> {
+                throw new IllegalArgumentException(String.format("Multiple keychains with the same name: %s", a));
+            }));
+
+            this.spec = List.copyOf(spec);
+            this.env = resolveCertificateRequests(
+                    spec.stream().map(KeychainWithCertsSpec::certificateRequests).flatMap(Collection::stream).toList());
+        }
+
+        public SignEnv(KeychainWithCertsSpec... spec) {
+            this(List.of(spec));
+        }
+
+        public List<ResolvedKeychain> keychains() {
+            return spec.stream().map(ResolvedKeychain::new).map(keychain -> {
+                return keychain.toMock(env);
+            }).toList();
+        }
+
+        public Map<CertificateRequest, X509Certificate> env() {
+            return env;
+        }
+
+        private final Map<CertificateRequest, X509Certificate> env;
+        private final List<KeychainWithCertsSpec> spec;
+    }
+
+    public static CommandMockSpec securityMock(SignEnv signEnv) {
+        var action = CommandActionSpec.create("/usr/bin/security", new MacSecurityMock(signEnv));
+        return new CommandMockSpec(action.description(), CommandActionSpecs.build().action(action).create());
+    }
+
+    private static KeyPair createKeyPair() {
+        try {
+            var kpg = KeyPairGenerator.getInstance("RSA");
+            return kpg.generateKeyPair();
+        } catch (NoSuchAlgorithmException ex) {
+            throw ExceptionBox.toUnchecked(ex);
+        }
+    }
+
+    //
+    // Reflection proxy for jdk.test.lib.security.CertificateBuilder class.
+    //
+    // Can't use it directly because it is impossible to cherry-pick this class from the JDK test lib in JUnit tests due to limitations of jtreg.
+    //
+    // Shared jpackage JUnit tests don't require "jdk.jpackage.test.stdmock", but they depend on "jdk.jpackage.test" package.
+    // Source code for these two packages resides in the same directory tree, so jtreg will pull in classes from both packages for the jpackage JUnit tests.
+    // Static dependency on jdk.test.lib.security.CertificateBuilder class will force pulling in the entire JDK test lib, because of jtreg limitations.
+    //
+    // Use dynamic dependency as a workaround. Tests that require jdk.test.lib.security.CertificateBuilder class, should have
+    //
+    // /*
+    //  * ...
+    //  * @library /test/lib
+    //  * @build jdk.test.lib.security.CertificateBuilder
+    //  */
+    //
+    // in their declarations. They also should have
+    //
+    //  --add-exports java.base/sun.security.x509=ALL-UNNAMED
+    //  --add-exports java.base/sun.security.util=ALL-UNNAMED
+    //
+    // on javac and java command lines.
+    //
+    private static final class CertificateBuilder {
+
+        CertificateBuilder() {
+            instance = toSupplier(ctor::newInstance).get();
+        }
+
+        CertificateBuilder setSubjectName(String v) {
+            toRunnable(() -> {
+                setSubjectName.invoke(instance, v);
+            }).run();
+            return this;
+        }
+
+        CertificateBuilder setPublicKey(PublicKey v) {
+            toRunnable(() -> {
+                setPublicKey.invoke(instance, v);
+            }).run();
+            return this;
+        }
+
+        CertificateBuilder setSerialNumber(BigInteger v) {
+            toRunnable(() -> {
+                setSerialNumber.invoke(instance, v);
+            }).run();
+            return this;
+        }
+
+        CertificateBuilder addSubjectKeyIdExt(PublicKey v) {
+            toRunnable(() -> {
+                addSubjectKeyIdExt.invoke(instance, v);
+            }).run();
+            return this;
+        }
+
+        CertificateBuilder addAuthorityKeyIdExt(PublicKey v) {
+            toRunnable(() -> {
+                addAuthorityKeyIdExt.invoke(instance, v);
+            }).run();
+            return this;
+        }
+
+        CertificateBuilder setValidity(Date from, Date to) {
+            toRunnable(() -> {
+                setValidity.invoke(instance, from, to);
+            }).run();
+            return this;
+        }
+
+        X509Certificate build(X509Certificate issuerCert, PrivateKey issuerKey) throws IOException, CertificateException {
+            try {
+                return (X509Certificate)toSupplier(() -> {
+                    return build.invoke(instance, issuerCert, issuerKey);
+                }).get();
+            } catch (ExceptionBox box) {
+                switch (ExceptionBox.unbox(box)) {
+                    case IOException ex -> {
+                        throw ex;
+                    }
+                    case CertificateException ex -> {
+                        throw ex;
+                    }
+                    default -> {
+                        throw box;
+                    }
+                }
+            }
+        }
+
+        private final Object instance;
+
+        private static final Constructor<?> ctor;
+        private static final Method setSubjectName;
+        private static final Method setPublicKey;
+        private static final Method setSerialNumber;
+        private static final Method addSubjectKeyIdExt;
+        private static final Method addAuthorityKeyIdExt;
+        private static final Method setValidity;
+        private static final Method build;
+
+        static {
+            try {
+                var certificateBuilderClass = Class.forName("jdk.test.lib.security.CertificateBuilder");
+
+                ctor = certificateBuilderClass.getConstructor();
+
+                setSubjectName = certificateBuilderClass.getMethod("setSubjectName", String.class);
+
+                setPublicKey = certificateBuilderClass.getMethod("setPublicKey", PublicKey.class);
+
+                setSerialNumber = certificateBuilderClass.getMethod("setSerialNumber", BigInteger.class);
+
+                addSubjectKeyIdExt = certificateBuilderClass.getMethod("addSubjectKeyIdExt", PublicKey.class);
+
+                addAuthorityKeyIdExt = certificateBuilderClass.getMethod("addAuthorityKeyIdExt", PublicKey.class);
+
+                setValidity = certificateBuilderClass.getMethod("setValidity", Date.class, Date.class);
+
+                build = certificateBuilderClass.getMethod("build", X509Certificate.class, PrivateKey.class);
+
+            } catch (ClassNotFoundException | NoSuchMethodException | SecurityException ex) {
+                throw toUnchecked(ex);
+            }
+        }
+    }
+}
diff --git a/test/jdk/tools/jpackage/junit/share/jdk.jpackage/jdk/jpackage/internal/cli/OptionsValidationFailTest.excludes b/test/jdk/tools/jpackage/junit/share/jdk.jpackage/jdk/jpackage/internal/cli/OptionsValidationFailTest.excludes
index 40f73e624b6..0b98c051238 100644
--- a/test/jdk/tools/jpackage/junit/share/jdk.jpackage/jdk/jpackage/internal/cli/OptionsValidationFailTest.excludes
+++ b/test/jdk/tools/jpackage/junit/share/jdk.jpackage/jdk/jpackage/internal/cli/OptionsValidationFailTest.excludes
@@ -39,6 +39,16 @@ ErrorTest.test(WIN_MSI; app-desc=Hello; args-add=[--app-version, 1234]; errors=[
 ErrorTest.test(WIN_MSI; app-desc=Hello; args-add=[--app-version, 256.1]; errors=[message.error-header+[error.msi-product-version-major-out-of-range, 256.1], message.advice-header+[error.version-string-wrong-format.advice]])
 ErrorTest.test(WIN_MSI; app-desc=Hello; args-add=[--launcher-as-service]; errors=[message.error-header+[error.missing-service-installer], message.advice-header+[error.missing-service-installer.advice]])
 ErrorTest.test(args-add=[@foo]; errors=[message.error-header+[ERR_CannotParseOptions, foo]])
+ErrorTest.testMacSignWithoutIdentity(IMAGE; app-desc=Hello; args-add=[--mac-sign, --mac-signing-keychain, @@EMPTY_KEYCHAIN@@]; errors=[message.error-header+[error.cert.not.found, CODE_SIGN, EMPTY_KEYCHAIN]])
+ErrorTest.testMacSignWithoutIdentity(IMAGE; args-add=[--app-image, @@APP_IMAGE_WITH_SHORT_NAME@@, --mac-sign, --mac-signing-keychain, @@EMPTY_KEYCHAIN@@]; errors=[message.error-header+[error.cert.not.found, CODE_SIGN, EMPTY_KEYCHAIN]])
+ErrorTest.testMacSignWithoutIdentity(MAC_DMG; app-desc=Hello; args-add=[--mac-sign, --mac-signing-keychain, @@EMPTY_KEYCHAIN@@]; errors=[message.error-header+[error.cert.not.found, CODE_SIGN, EMPTY_KEYCHAIN]])
+ErrorTest.testMacSignWithoutIdentity(MAC_DMG; args-add=[--app-image, @@APP_IMAGE_WITH_SHORT_NAME@@, --mac-sign, --mac-signing-keychain, @@EMPTY_KEYCHAIN@@]; errors=[message.error-header+[error.cert.not.found, CODE_SIGN, EMPTY_KEYCHAIN]])
+ErrorTest.testMacSignWithoutIdentity(MAC_PKG; app-desc=Hello; args-add=[--mac-sign, --mac-signing-keychain, @@EMPTY_KEYCHAIN@@]; errors=[message.error-header+[error.cert.not.found, CODE_SIGN, EMPTY_KEYCHAIN], message.error-header+[error.cert.not.found, INSTALLER, EMPTY_KEYCHAIN]])
+ErrorTest.testMacSignWithoutIdentity(MAC_PKG; app-desc=Hello; args-add=[--mac-sign, --mac-signing-keychain, @@KEYCHAIN_WITH_APP_IMAGE_CERT@@]; args-del=[--name]; errors=[message.error-header+[error.cert.not.found, INSTALLER, KEYCHAIN_WITH_APP_IMAGE_CERT]])
+ErrorTest.testMacSignWithoutIdentity(MAC_PKG; app-desc=Hello; args-add=[--mac-sign, --mac-signing-keychain, @@KEYCHAIN_WITH_PKG_CERT@@]; args-del=[--name]; errors=[message.error-header+[error.cert.not.found, CODE_SIGN, KEYCHAIN_WITH_PKG_CERT]])
+ErrorTest.testMacSignWithoutIdentity(MAC_PKG; args-add=[--app-image, @@APP_IMAGE_WITH_SHORT_NAME@@, --mac-sign, --mac-signing-keychain, @@EMPTY_KEYCHAIN@@]; errors=[message.error-header+[error.cert.not.found, CODE_SIGN, EMPTY_KEYCHAIN], message.error-header+[error.cert.not.found, INSTALLER, EMPTY_KEYCHAIN]])
+ErrorTest.testMacSignWithoutIdentity(MAC_PKG; args-add=[--mac-sign, --mac-signing-keychain, @@KEYCHAIN_WITH_APP_IMAGE_CERT@@, --app-image, @@APP_IMAGE_WITH_SHORT_NAME@@]; errors=[message.error-header+[error.cert.not.found, INSTALLER, KEYCHAIN_WITH_APP_IMAGE_CERT]])
+ErrorTest.testMacSignWithoutIdentity(MAC_PKG; args-add=[--mac-sign, --mac-signing-keychain, @@KEYCHAIN_WITH_PKG_CERT@@, --app-image, @@APP_IMAGE_WITH_SHORT_NAME@@]; errors=[message.error-header+[error.cert.not.found, CODE_SIGN, KEYCHAIN_WITH_PKG_CERT]])
 ErrorTest.testMacSigningIdentityValidation(IMAGE, --mac-app-image-sign-identity, true)
 ErrorTest.testMacSigningIdentityValidation(IMAGE, --mac-signing-key-user-name, false)
 ErrorTest.testMacSigningIdentityValidation(MAC_DMG, --mac-app-image-sign-identity, true)
diff --git a/test/jdk/tools/jpackage/junit/share/jdk.jpackage/jdk/jpackage/internal/util/CommandOutputControlTest.java b/test/jdk/tools/jpackage/junit/share/jdk.jpackage/jdk/jpackage/internal/util/CommandOutputControlTest.java
index d71cf7c4d41..b179f32447f 100644
--- a/test/jdk/tools/jpackage/junit/share/jdk.jpackage/jdk/jpackage/internal/util/CommandOutputControlTest.java
+++ b/test/jdk/tools/jpackage/junit/share/jdk.jpackage/jdk/jpackage/internal/util/CommandOutputControlTest.java
@@ -458,7 +458,7 @@ public class CommandOutputControlTest {
         processDestroyer.get().join();
     }
 
-    @DisabledOnOs(value = OS.MAC, disabledReason = "Closing a stream doesn't consistently cause a trouble as it should")
+    @DisabledOnOs(value = {OS.MAC, OS.LINUX}, disabledReason = "Closing a stream doesn't consistently cause a trouble as expected")
     @ParameterizedTest
     @EnumSource(OutputStreams.class)
     public void test_close_streams(OutputStreams action) throws InterruptedException, IOException {
diff --git a/test/jdk/tools/jpackage/macosx/SigningAppImageTest.java b/test/jdk/tools/jpackage/macosx/SigningAppImageTest.java
index 0f299cb5a24..3a257a425b6 100644
--- a/test/jdk/tools/jpackage/macosx/SigningAppImageTest.java
+++ b/test/jdk/tools/jpackage/macosx/SigningAppImageTest.java
@@ -82,10 +82,17 @@ public class SigningAppImageTest {
                 SigningBase.StandardCertificateRequest.CODESIGN_UNICODE
         )) {
             for (var signIdentityType : SignKeyOption.Type.defaultValues()) {
-                data.add(new SignKeyOptionWithKeychain(
-                        signIdentityType,
-                        certRequest,
-                        SigningBase.StandardKeychain.MAIN.keychain()));
+                SigningBase.StandardKeychain keychain;
+                if (signIdentityType == SignKeyOption.Type.SIGN_KEY_IMPLICIT) {
+                    keychain = SigningBase.StandardKeychain.SINGLE;
+                    if (!keychain.contains(certRequest)) {
+                        continue;
+                    }
+                } else {
+                    keychain = SigningBase.StandardKeychain.MAIN;
+                }
+
+                data.add(new SignKeyOptionWithKeychain(signIdentityType, certRequest, keychain.keychain()));
             }
         }
 
diff --git a/test/jdk/tools/jpackage/macosx/SigningAppImageTwoStepsTest.java b/test/jdk/tools/jpackage/macosx/SigningAppImageTwoStepsTest.java
index 2c7ae205e69..a6d94b59bd9 100644
--- a/test/jdk/tools/jpackage/macosx/SigningAppImageTwoStepsTest.java
+++ b/test/jdk/tools/jpackage/macosx/SigningAppImageTwoStepsTest.java
@@ -93,6 +93,11 @@ public class SigningAppImageTwoStepsTest {
                 return new TestSpec(Optional.ofNullable(signAppImage), sign);
             }
 
+            Builder keychain(SigningBase.StandardKeychain v) {
+                keychain = Objects.requireNonNull(v);
+                return this;
+            }
+
             Builder certRequest(SigningBase.StandardCertificateRequest v) {
                 certRequest = Objects.requireNonNull(v);
                 return this;
@@ -117,9 +122,10 @@ public class SigningAppImageTwoStepsTest {
                 return new SignKeyOptionWithKeychain(
                         signIdentityType,
                         certRequest,
-                        SigningBase.StandardKeychain.MAIN.keychain());
+                        keychain.keychain());
             }
 
+            private SigningBase.StandardKeychain keychain = SigningBase.StandardKeychain.MAIN;
             private SigningBase.StandardCertificateRequest certRequest = SigningBase.StandardCertificateRequest.CODESIGN;
             private SignKeyOption.Type signIdentityType = SignKeyOption.Type.SIGN_KEY_IDENTITY;
 
@@ -144,18 +150,26 @@ public class SigningAppImageTwoStepsTest {
                 }, signOption.keychain());
             }, appImageCmd::execute);
 
-            var cmd = new JPackageCommand()
-                    .setPackageType(PackageType.IMAGE)
-                    .addArguments("--app-image", appImageCmd.outputBundle())
-                    .mutate(sign::addTo);
+            MacSign.withKeychain(keychain -> {
+                var cmd = new JPackageCommand()
+                        .setPackageType(PackageType.IMAGE)
+                        .addArguments("--app-image", appImageCmd.outputBundle())
+                        .mutate(sign::addTo);
 
-            cmd.executeAndAssertHelloAppImageCreated();
-            MacSignVerify.verifyAppImageSigned(cmd, sign.certRequest());
+                cmd.executeAndAssertHelloAppImageCreated();
+                MacSignVerify.verifyAppImageSigned(cmd, sign.certRequest());
+            }, sign.keychain());
         }
     }
 
     public static Collection<Object[]> test() {
 
+        var signIdentityTypes = List.of(
+                SignKeyOption.Type.SIGN_KEY_USER_SHORT_NAME,
+                SignKeyOption.Type.SIGN_KEY_IDENTITY_APP_IMAGE,
+                SignKeyOption.Type.SIGN_KEY_IMPLICIT
+        );
+
         List<TestSpec> data = new ArrayList<>();
 
         for (var appImageSign : withAndWithout(SignKeyOption.Type.SIGN_KEY_IDENTITY)) {
@@ -167,9 +181,12 @@ public class SigningAppImageTwoStepsTest {
                         .certRequest(SigningBase.StandardCertificateRequest.CODESIGN_ACME_TECH_LTD)
                         .signAppImage();
             });
-            for (var signIdentityType : SignKeyOption.Type.defaultValues()) {
+            for (var signIdentityType : signIdentityTypes) {
                 builder.signIdentityType(signIdentityType)
                         .certRequest(SigningBase.StandardCertificateRequest.CODESIGN);
+                if (signIdentityType == SignKeyOption.Type.SIGN_KEY_IMPLICIT) {
+                    builder.keychain(SigningBase.StandardKeychain.SINGLE);
+                }
                 data.add(builder.sign().create());
             }
         }
diff --git a/test/jdk/tools/jpackage/macosx/SigningBase.java b/test/jdk/tools/jpackage/macosx/SigningBase.java
index 5f4367e6096..e7e2d7e44cf 100644
--- a/test/jdk/tools/jpackage/macosx/SigningBase.java
+++ b/test/jdk/tools/jpackage/macosx/SigningBase.java
@@ -38,7 +38,7 @@ import jdk.jpackage.test.TKit;
  * @test
  * @summary Setup the environment for jpackage macos signing tests.
  *          Creates required keychains and signing identities.
- *          Does NOT run any jpackag tests.
+ *          Does NOT run any jpackage tests.
  * @library /test/jdk/tools/jpackage/helpers
  * @build jdk.jpackage.test.*
  * @compile -Xlint:all -Werror SigningBase.java
@@ -51,7 +51,7 @@ import jdk.jpackage.test.TKit;
  * @test
  * @summary Tear down the environment for jpackage macos signing tests.
  *          Deletes required keychains and signing identities.
- *          Does NOT run any jpackag tests.
+ *          Does NOT run any jpackage tests.
  * @library /test/jdk/tools/jpackage/helpers
  * @build jdk.jpackage.test.*
  * @compile -Xlint:all -Werror SigningBase.java
@@ -83,7 +83,7 @@ public class SigningBase {
         }
 
         private static CertificateRequest.Builder cert() {
-            return new CertificateRequest.Builder();
+            return CertificateRequest.build();
         }
 
         private final CertificateRequest spec;
@@ -118,6 +118,12 @@ public class SigningBase {
                 StandardCertificateRequest.PKG,
                 StandardCertificateRequest.CODESIGN_COPY,
                 StandardCertificateRequest.PKG_COPY),
+        /**
+         * A keychain with a single certificate for each role.
+         */
+        SINGLE("jpackagerTest-single.keychain",
+                StandardCertificateRequest.CODESIGN,
+                StandardCertificateRequest.PKG),
         ;
 
         StandardKeychain(String keychainName, StandardCertificateRequest... certs) {
@@ -145,7 +151,7 @@ public class SigningBase {
         }
 
         private static KeychainWithCertsSpec.Builder keychain(String name) {
-            return new KeychainWithCertsSpec.Builder().name(name);
+            return KeychainWithCertsSpec.build().name(name);
         }
 
         private static List<KeychainWithCertsSpec> signingEnv() {
@@ -164,13 +170,13 @@ public class SigningBase {
     }
 
     public static void verifySignTestEnvReady() {
-        if (!Inner.SIGN_ENV_READY) {
+        if (!SignEnvReady.VALUE) {
             TKit.throwSkippedException(new IllegalStateException("Misconfigured signing test environment"));
         }
     }
 
-    private final class Inner {
-        private static final boolean SIGN_ENV_READY = MacSign.isDeployed(StandardKeychain.signingEnv());
+    private final class SignEnvReady {
+        static final boolean VALUE = MacSign.isDeployed(StandardKeychain.signingEnv());
     }
 
     private static final String NAME_ASCII = "jpackage.openjdk.java.net";
diff --git a/test/jdk/tools/jpackage/macosx/SigningPackageTest.java b/test/jdk/tools/jpackage/macosx/SigningPackageTest.java
index 8a93ce5f749..d1c17fb61cd 100644
--- a/test/jdk/tools/jpackage/macosx/SigningPackageTest.java
+++ b/test/jdk/tools/jpackage/macosx/SigningPackageTest.java
@@ -94,7 +94,7 @@ public class SigningPackageTest {
     }
 
     public static Collection<Object[]> test() {
-        return TestSpec.testCases(true).stream().map(v -> {
+        return TestSpec.testCases().stream().map(v -> {
             return new Object[] {v};
         }).toList();
     }
@@ -126,7 +126,10 @@ public class SigningPackageTest {
                 }
 
                 if (appImageSignOption.isEmpty()) {
-                    if (packageSignOption.get().type() != SignKeyOption.Type.SIGN_KEY_IDENTITY) {
+                    if (!List.of(
+                            SignKeyOption.Type.SIGN_KEY_IDENTITY,
+                            SignKeyOption.Type.SIGN_KEY_IDENTITY_SHA1
+                    ).contains(packageSignOption.get().type())) {
                         // They request to sign the .pkg installer without
                         // the "--mac-installer-sign-identity" option,
                         // but didn't specify a signing option for the packaged app image.
@@ -204,15 +207,61 @@ public class SigningPackageTest {
         }
 
         MacSign.ResolvedKeychain keychain() {
-            return SigningBase.StandardKeychain.MAIN.keychain();
+            return chooseKeychain(Stream.of(
+                    appImageSignOption.stream(),
+                    packageSignOption.stream()
+            ).flatMap(x -> x).map(SignKeyOption::type).findFirst().orElseThrow()).keychain();
         }
 
-        static List<TestSpec> testCases(boolean withUnicode) {
+        /**
+         * Types of test cases to skip.
+         */
+        enum SkipTestCases {
+            /**
+             * Skip test cases with signing identities/key names with symbols outside of the
+             * ASCII codepage.
+             */
+            SKIP_UNICODE,
+            /**
+             * Skip test cases in which the value of the "--mac-signing-key-user-name"
+             * option is the full signing identity name.
+             */
+            SKIP_SIGN_KEY_USER_FULL_NAME,
+            /**
+             * Skip test cases in which the value of the "--mac-installer-sign-identity" or
+             * "--mac-app-image-sign-identity" option is the SHA1 digest of the signing
+             * certificate.
+             */
+            SKIP_SIGN_KEY_IDENTITY_SHA1,
+            ;
+        }
+
+        static List<TestSpec> minimalTestCases() {
+            return testCases(SkipTestCases.values());
+        }
+
+        static List<TestSpec> testCases(SkipTestCases... skipTestCases) {
+
+            final var skipTestCasesAsSet = Set.of(skipTestCases);
+
+            final var signIdentityTypes = Stream.of(SignKeyOption.Type.defaultValues()).filter(v -> {
+                switch (v) {
+                    case SIGN_KEY_USER_FULL_NAME -> {
+                        return !skipTestCasesAsSet.contains(SkipTestCases.SKIP_SIGN_KEY_USER_FULL_NAME);
+                    }
+                    case SIGN_KEY_IDENTITY_SHA1 -> {
+                        return !skipTestCasesAsSet.contains(SkipTestCases.SKIP_SIGN_KEY_IDENTITY_SHA1);
+                    }
+                    default -> {
+                        return true;
+                    }
+                }
+            }).toList();
 
             List<TestSpec> data = new ArrayList<>();
 
             List<List<SigningBase.StandardCertificateRequest>> certRequestGroups;
-            if (withUnicode) {
+            if (!skipTestCasesAsSet.contains(SkipTestCases.SKIP_UNICODE)) {
                 certRequestGroups = List.of(
                         List.of(SigningBase.StandardCertificateRequest.CODESIGN, SigningBase.StandardCertificateRequest.PKG),
                         List.of(SigningBase.StandardCertificateRequest.CODESIGN_UNICODE, SigningBase.StandardCertificateRequest.PKG_UNICODE)
@@ -224,19 +273,33 @@ public class SigningPackageTest {
             }
 
             for (var certRequests : certRequestGroups) {
-                for (var signIdentityType : SignKeyOption.Type.defaultValues()) {
-                    var keychain = SigningBase.StandardKeychain.MAIN.keychain();
+                for (var signIdentityType : signIdentityTypes) {
+                    if (signIdentityType == SignKeyOption.Type.SIGN_KEY_IMPLICIT
+                            && !SigningBase.StandardKeychain.SINGLE.contains(certRequests.getFirst())) {
+                        // Skip invalid test case: the keychain for testing signing without
+                        // an explicitly specified signing key option doesn't have this signing key.
+                        break;
+                    }
+
+                    if (signIdentityType.passThrough() && !certRequests.contains(SigningBase.StandardCertificateRequest.CODESIGN)) {
+                        // Using a pass-through signing option.
+                        // Doesn't make sense to waste time on testing it with multiple certificates.
+                        // Skip the test cases using non "default" certificate.
+                        break;
+                    }
+
+                    var keychain = chooseKeychain(signIdentityType).keychain();
                     var appImageSignKeyOption = new SignKeyOption(signIdentityType, certRequests.getFirst(), keychain);
                     var pkgSignKeyOption = new SignKeyOption(signIdentityType, certRequests.getLast(), keychain);
 
                     switch (signIdentityType) {
-                        case SIGN_KEY_IDENTITY -> {
+                        case SIGN_KEY_IDENTITY, SIGN_KEY_IDENTITY_SHA1 -> {
                             // Use "--mac-installer-sign-identity" and "--mac-app-image-sign-identity" signing options.
                             // They allows to sign the packaged app image and the installer (.pkg) separately.
                             data.add(new TestSpec(Optional.of(appImageSignKeyOption), Optional.empty(), PackageType.MAC));
                             data.add(new TestSpec(Optional.empty(), Optional.of(pkgSignKeyOption), PackageType.MAC_PKG));
                         }
-                        case SIGN_KEY_USER_SHORT_NAME -> {
+                        case SIGN_KEY_USER_SHORT_NAME, SIGN_KEY_IMPLICIT -> {
                             // Use "--mac-signing-key-user-name" signing option with short user name or implicit signing option.
                             // It signs both the packaged app image and the installer (.pkg).
                             // Thus, if the installer is not signed, it can be used only with .dmg packaging.
@@ -263,5 +326,13 @@ public class SigningPackageTest {
 
             return data;
         }
+
+        private static SigningBase.StandardKeychain chooseKeychain(SignKeyOption.Type signIdentityType) {
+            if (signIdentityType == SignKeyOption.Type.SIGN_KEY_IMPLICIT) {
+                return SigningBase.StandardKeychain.SINGLE;
+            } else {
+                return SigningBase.StandardKeychain.MAIN;
+            }
+        }
     }
 }
diff --git a/test/jdk/tools/jpackage/macosx/SigningPackageTwoStepTest.java b/test/jdk/tools/jpackage/macosx/SigningPackageTwoStepTest.java
index 23195c9a856..d0de9c8c704 100644
--- a/test/jdk/tools/jpackage/macosx/SigningPackageTwoStepTest.java
+++ b/test/jdk/tools/jpackage/macosx/SigningPackageTwoStepTest.java
@@ -108,7 +108,7 @@ public class SigningPackageTwoStepTest {
                 appImageSignOption = Optional.empty();
             }
 
-            for (var signPackage : SigningPackageTest.TestSpec.testCases(false)) {
+            for (var signPackage : SigningPackageTest.TestSpec.minimalTestCases()) {
                 data.add(new TwoStepsTestSpec(appImageSignOption, signPackage));
             }
         }
diff --git a/test/jdk/tools/jpackage/macosx/SigningRuntimeImagePackageTest.java b/test/jdk/tools/jpackage/macosx/SigningRuntimeImagePackageTest.java
index 604399ebd7a..54021aa2a0b 100644
--- a/test/jdk/tools/jpackage/macosx/SigningRuntimeImagePackageTest.java
+++ b/test/jdk/tools/jpackage/macosx/SigningRuntimeImagePackageTest.java
@@ -125,7 +125,7 @@ public class SigningRuntimeImagePackageTest {
                 runtimeSignOption = Optional.empty();
             }
 
-            for (var signPackage : SigningPackageTest.TestSpec.testCases(false)) {
+            for (var signPackage : SigningPackageTest.TestSpec.minimalTestCases()) {
                 data.add(new RuntimeTestSpec(runtimeSignOption, runtimeType, signPackage));
             }
         }
diff --git a/test/jdk/tools/jpackage/share/ErrorTest.java b/test/jdk/tools/jpackage/share/ErrorTest.java
index 86390a85068..2133823381c 100644
--- a/test/jdk/tools/jpackage/share/ErrorTest.java
+++ b/test/jdk/tools/jpackage/share/ErrorTest.java
@@ -26,7 +26,7 @@ import static java.util.stream.Collectors.toMap;
 import static jdk.internal.util.OperatingSystem.LINUX;
 import static jdk.internal.util.OperatingSystem.MACOS;
 import static jdk.internal.util.OperatingSystem.WINDOWS;
-import static jdk.jpackage.internal.util.function.ThrowingFunction.toFunction;
+import static jdk.jpackage.internal.util.function.ThrowingSupplier.toSupplier;
 import static jdk.jpackage.test.JPackageCommand.makeAdvice;
 import static jdk.jpackage.test.JPackageCommand.makeError;
 
@@ -45,6 +45,7 @@ import java.util.function.UnaryOperator;
 import java.util.regex.Pattern;
 import java.util.stream.IntStream;
 import java.util.stream.Stream;
+import jdk.internal.util.OperatingSystem;
 import jdk.jpackage.internal.util.TokenReplace;
 import jdk.jpackage.test.Annotations.Parameter;
 import jdk.jpackage.test.Annotations.ParameterSupplier;
@@ -53,14 +54,27 @@ import jdk.jpackage.test.CannedArgument;
 import jdk.jpackage.test.CannedFormattedString;
 import jdk.jpackage.test.JPackageCommand;
 import jdk.jpackage.test.JPackageOutputValidator;
+import jdk.jpackage.test.MacSign;
+import jdk.jpackage.test.MacSign.CertificateRequest;
+import jdk.jpackage.test.MacSign.CertificateType;
+import jdk.jpackage.test.MacSign.KeychainWithCertsSpec;
+import jdk.jpackage.test.MacSign.ResolvedKeychain;
+import jdk.jpackage.test.MacSign.StandardCertificateNamePrefix;
 import jdk.jpackage.test.PackageType;
 import jdk.jpackage.test.TKit;
+import jdk.jpackage.test.mock.Script;
+import jdk.jpackage.test.mock.VerbatimCommandMock;
+import jdk.jpackage.test.stdmock.JPackageMockUtils;
+import jdk.jpackage.test.stdmock.MacSignMockUtils;
 
 /*
  * @test
  * @summary Test jpackage output for erroneous input
  * @library /test/jdk/tools/jpackage/helpers
+ * @library /test/lib
  * @build jdk.jpackage.test.*
+ * @build jdk.jpackage.test.stdmock.*
+ * @build jdk.test.lib.security.CertificateBuilder
  * @compile -Xlint:all -Werror ErrorTest.java
  * @run main/othervm/timeout=720 -Xmx512m jdk.jpackage.test.Main
  *  --jpt-run=ErrorTest
@@ -71,7 +85,10 @@ import jdk.jpackage.test.TKit;
  * @test
  * @summary Test jpackage output for erroneous input
  * @library /test/jdk/tools/jpackage/helpers
+ * @library /test/lib
  * @build jdk.jpackage.test.*
+ * @build jdk.jpackage.test.stdmock.*
+ * @build jdk.test.lib.security.CertificateBuilder
  * @compile -Xlint:all -Werror ErrorTest.java
  * @run main/othervm/timeout=720 -Xmx512m jdk.jpackage.test.Main
  *  --jpt-run=ErrorTest
@@ -81,10 +98,10 @@ import jdk.jpackage.test.TKit;
 public final class ErrorTest {
 
     enum Token {
-        JAVA_HOME(cmd -> {
+        JAVA_HOME(() -> {
             return System.getProperty("java.home");
         }),
-        APP_IMAGE(cmd -> {
+        APP_IMAGE(() -> {
             final var appImageRoot = TKit.createTempDirectory("appimage");
 
             final var appImageCmd = JPackageCommand.helloAppImage()
@@ -92,28 +109,44 @@ public final class ErrorTest {
 
             appImageCmd.execute();
 
-            return appImageCmd.outputBundle().toString();
+            return appImageCmd.outputBundle();
         }),
-        INVALID_MAC_RUNTIME_BUNDLE(toFunction(cmd -> {
+        APP_IMAGE_WITH_SHORT_NAME(() -> {
+            final var appImageRoot = TKit.createTempDirectory("appimage");
+
+            final var appImageCmd = JPackageCommand.helloAppImage()
+                    .setFakeRuntime().setArgumentValue("--dest", appImageRoot);
+
+            // Let jpackage pick the name from the main class (Hello). It qualifies as the "short" name.
+            appImageCmd.removeArgumentWithValue("--name");
+
+            appImageCmd.execute();
+
+            return appImageCmd.outputBundle();
+        }),
+        INVALID_MAC_RUNTIME_BUNDLE(toSupplier(() -> {
             // Has "Contents/MacOS/libjli.dylib", but missing "Contents/Home/lib/libjli.dylib".
             final Path root = TKit.createTempDirectory("mac-invalid-runtime-bundle");
             Files.createDirectories(root.resolve("Contents/Home"));
             Files.createFile(root.resolve("Contents/Info.plist"));
             Files.createDirectories(root.resolve("Contents/MacOS"));
             Files.createFile(root.resolve("Contents/MacOS/libjli.dylib"));
-            return root.toString();
+            return root;
         })),
-        INVALID_MAC_RUNTIME_IMAGE(toFunction(cmd -> {
+        INVALID_MAC_RUNTIME_IMAGE(toSupplier(() -> {
             // Has some files in the "lib" subdirectory, but doesn't have the "lib/libjli.dylib" file.
             final Path root = TKit.createTempDirectory("mac-invalid-runtime-image");
             Files.createDirectories(root.resolve("lib"));
             Files.createFile(root.resolve("lib/foo"));
-            return root.toString();
+            return root;
         })),
-        EMPTY_DIR(toFunction(cmd -> {
+        EMPTY_DIR(() -> {
             return TKit.createTempDirectory("empty-dir");
-        })),
+        }),
         ADD_LAUNCHER_PROPERTY_FILE,
+        EMPTY_KEYCHAIN,
+        KEYCHAIN_WITH_APP_IMAGE_CERT,
+        KEYCHAIN_WITH_PKG_CERT,
         ;
 
         private Token() {
@@ -124,6 +157,12 @@ public final class ErrorTest {
             this.valueSupplier = Optional.of(valueSupplier);
         }
 
+        private Token(Supplier<Object> valueSupplier) {
+            this(_ -> {
+                return valueSupplier.get();
+            });
+        }
+
         String token() {
             return makeToken(name());
         }
@@ -558,7 +597,7 @@ public final class ErrorTest {
     }
 
     public static Collection<Object[]> invalidAppVersion() {
-        return fromTestSpecBuilders(Stream.of(
+        return toTestArgs(Stream.of(
                 // Invalid app version. Just cover all different error messages.
                 // Extensive testing of invalid version strings is done in DottedVersionTest unit test.
                 testSpec().addArgs("--app-version", "").error("error.version-string-empty"),
@@ -601,7 +640,7 @@ public final class ErrorTest {
             argsStream = Stream.concat(argsStream, Stream.of(List.of("--win-console")));
         }
 
-        return fromTestSpecBuilders(argsStream.map(args -> {
+        return toTestArgs(argsStream.map(args -> {
             var builder = testSpec().noAppDesc().nativeType()
                     .addArgs("--runtime-image", Token.JAVA_HOME.token())
                     .addArgs(args);
@@ -629,7 +668,7 @@ public final class ErrorTest {
     }
 
     public static Collection<Object[]> testAdditionLaunchers() {
-        return fromTestSpecBuilders(Stream.of(
+        return toTestArgs(Stream.of(
             testSpec().addArgs("--add-launcher", Token.ADD_LAUNCHER_PROPERTY_FILE.token())
                     .error("error.parameter-add-launcher-malformed", Token.ADD_LAUNCHER_PROPERTY_FILE, "--add-launcher"),
             testSpec().removeArgs("--name").addArgs("--name", "foo", "--add-launcher", "foo=" + Token.ADD_LAUNCHER_PROPERTY_FILE.token())
@@ -637,6 +676,184 @@ public final class ErrorTest {
         ));
     }
 
+    @Test(ifOS = MACOS)
+    @ParameterSupplier
+    @ParameterSupplier("testMacPkgSignWithoutIdentity")
+    public static void testMacSignWithoutIdentity(TestSpec spec) {
+        // The test called JPackage Command.useToolProviderBy Default(),
+        // which alters global variables in the test library,
+        // so run the test case with a new global state to isolate the alteration of the globals.
+        TKit.withNewState(() -> {
+            testMacSignWithoutIdentityWithNewTKitState(spec);
+        });
+    }
+
+   private static void testMacSignWithoutIdentityWithNewTKitState(TestSpec spec) {
+        final Token keychainToken = spec.expectedMessages().stream().flatMap(cannedStr -> {
+            return Stream.of(cannedStr.args()).filter(Token.class::isInstance).map(Token.class::cast).filter(token -> {
+                switch (token) {
+                    case EMPTY_KEYCHAIN, KEYCHAIN_WITH_APP_IMAGE_CERT, KEYCHAIN_WITH_PKG_CERT -> {
+                        return true;
+                    }
+                    default -> {
+                        return false;
+                    }
+                }
+            });
+        }).distinct().reduce((a, b) -> {
+            throw new IllegalStateException(String.format(
+                    "Error messages %s reference multiple keychains: %s and %s", spec.expectedMessages(), a, b));
+        }).orElseThrow();
+
+        final ResolvedKeychain keychain;
+
+        switch (keychainToken) {
+            case EMPTY_KEYCHAIN -> {
+                keychain = new ResolvedKeychain(new KeychainWithCertsSpec(MacSign.createEmptyKeychain(), List.of()));
+            }
+            case KEYCHAIN_WITH_APP_IMAGE_CERT, KEYCHAIN_WITH_PKG_CERT -> {
+                CertificateType existingCertType;
+                switch (keychainToken) {
+                    case KEYCHAIN_WITH_APP_IMAGE_CERT -> {
+                        existingCertType = CertificateType.CODE_SIGN;
+                    }
+                    case KEYCHAIN_WITH_PKG_CERT -> {
+                        existingCertType = CertificateType.INSTALLER;
+                    }
+                    default -> {
+                        throw new AssertionError();
+                    }
+                }
+
+                keychain = Stream.of(SignEnvMock.SingleCertificateKeychain.values()).filter(k -> {
+                    return k.certificateType() == existingCertType;
+                }).findFirst().orElseThrow().keychain();
+
+                var script = Script.build()
+                        // Disable the mutation making mocks "run once".
+                        .commandMockBuilderMutator(null)
+                        // Replace "/usr/bin/security" with the mock bound to the keychain mock.
+                        .map(MacSignMockUtils.securityMock(SignEnvMock.VALUE))
+                        // Don't mock other external commands.
+                        .use(VerbatimCommandMock.INSTANCE)
+                        .createLoop();
+
+                // Create jpackage tool provider using the /usr/bin/security mock.
+                var jpackage = JPackageMockUtils.createJPackageToolProvider(OperatingSystem.MACOS, script);
+
+                // Override the default jpackage tool provider with the one using the /usr/bin/security mock.
+                JPackageCommand.useToolProviderByDefault(jpackage);
+            }
+            default -> {
+                throw new AssertionError();
+            }
+        }
+
+        MacSign.withKeychain(_ -> {
+            spec.mapExpectedMessages(cannedStr -> {
+                return cannedStr.mapArgs(arg -> {
+                    switch (arg) {
+                        case StandardCertificateNamePrefix certPrefix -> {
+                            return certPrefix.value();
+                        }
+                        case Token _ -> {
+                            return keychain.name();
+                        }
+                        default -> {
+                            return arg;
+                        }
+                    }
+                });
+            }).test(Map.of(keychainToken, _ -> keychain.name()));
+        }, keychain);
+    }
+
+    public static Collection<Object[]> testMacSignWithoutIdentity() {
+        final List<TestSpec> testCases = new ArrayList<>();
+
+        final var signArgs = List.of("--mac-sign", "--mac-signing-keychain", Token.EMPTY_KEYCHAIN.token());
+        final var appImageArgs = List.of("--app-image", Token.APP_IMAGE_WITH_SHORT_NAME.token());
+
+        for (var withAppImage : List.of(true, false)) {
+            var builder = testSpec();
+            if (withAppImage) {
+                builder.noAppDesc().addArgs(appImageArgs);
+            }
+            builder.addArgs(signArgs);
+
+            for (var type: List.of(PackageType.IMAGE, PackageType.MAC_PKG, PackageType.MAC_DMG)) {
+                builder.setMessages().error("error.cert.not.found",
+                        MacSign.StandardCertificateNamePrefix.CODE_SIGN, Token.EMPTY_KEYCHAIN);
+                switch (type) {
+                    case MAC_PKG -> {
+                        // jpackage must report two errors:
+                        //  1. It can't find signing identity to sign the app image
+                        //  2. It can't find signing identity to sign the PKG installer
+                        builder.error("error.cert.not.found",
+                                MacSign.StandardCertificateNamePrefix.INSTALLER, Token.EMPTY_KEYCHAIN);
+                    }
+                    default -> {
+                        // NOP
+                    }
+                }
+                var testSpec = builder.type(type).create();
+                testCases.add(testSpec);
+            }
+        }
+
+        return toTestArgs(testCases);
+    }
+
+    public static Collection<Object[]> testMacPkgSignWithoutIdentity() {
+        final List<TestSpec.Builder> testCases = new ArrayList<>();
+
+        final var appImageArgs = List.of("--app-image", Token.APP_IMAGE_WITH_SHORT_NAME.token());
+
+        for (var withAppImage : List.of(true, false)) {
+            for (var existingCertType : CertificateType.values()) {
+                Token keychain;
+                StandardCertificateNamePrefix missingCertificateNamePrefix;
+                switch (existingCertType) {
+                    case INSTALLER -> {
+                        keychain = Token.KEYCHAIN_WITH_PKG_CERT;
+                        missingCertificateNamePrefix = StandardCertificateNamePrefix.CODE_SIGN;
+                    }
+                    case CODE_SIGN -> {
+                        keychain = Token.KEYCHAIN_WITH_APP_IMAGE_CERT;
+                        missingCertificateNamePrefix = StandardCertificateNamePrefix.INSTALLER;
+                    }
+                    default -> {
+                        throw new AssertionError();
+                    }
+                }
+
+                var builder = testSpec()
+                        .type(PackageType.MAC_PKG)
+                        .addArgs("--mac-sign", "--mac-signing-keychain", keychain.token())
+                        .error("error.cert.not.found", missingCertificateNamePrefix, keychain);
+
+                if (withAppImage) {
+                    builder.noAppDesc().addArgs(appImageArgs);
+                } else {
+                    /*
+                     * Use shorter name to avoid
+                     *
+                     * [03:08:55.623] --mac-package-name is set to 'MacSignWithoutIdentityErrorTest', which is longer than 16 characters. For a better Mac experience consider shortening it.
+                     *
+                     * in the output.
+                     * The same idea is behind using the "APP_IMAGE_WITH_SHORT_NAME" token
+                     * instead of the "APP_IMAGE" for the predefined app image.
+                     */
+                    builder.removeArgs("--name");
+                }
+
+                testCases.add(builder);
+            }
+        }
+
+        return toTestArgs(testCases);
+    }
+
     @Test
     @ParameterSupplier("invalidNames")
     public static void testInvalidAppName(InvalidName name) {
@@ -1007,8 +1224,14 @@ public final class ErrorTest {
         );
     }
 
-    private static <T> Collection<Object[]> toTestArgs(Stream<T> stream) {
-        return stream.filter(v -> {
+    private static Collection<Object[]> toTestArgs(Stream<?> stream) {
+        return stream.map(v -> {
+            if (v instanceof TestSpec.Builder builder) {
+                return builder.create();
+            } else {
+                return v;
+            }
+        }).filter(v -> {
             if (v instanceof TestSpec ts) {
                 return ts.isSupported();
             } else {
@@ -1019,8 +1242,8 @@ public final class ErrorTest {
         }).toList();
     }
 
-    private static Collection<Object[]> fromTestSpecBuilders(Stream<TestSpec.Builder> stream) {
-        return toTestArgs(stream.map(TestSpec.Builder::create));
+    private static Collection<Object[]> toTestArgs(Collection<?> col) {
+        return toTestArgs(col.stream());
     }
 
     private static String adjustTextStreamVerifierArg(String str) {
@@ -1028,4 +1251,40 @@ public final class ErrorTest {
     }
 
     private static final Pattern LINE_SEP_REGEXP = Pattern.compile("\\R");
+
+    private final class SignEnvMock {
+
+        enum SingleCertificateKeychain {
+            FOO(CertificateType.CODE_SIGN),
+            BAR(CertificateType.INSTALLER),
+            ;
+
+            SingleCertificateKeychain(CertificateType certificateType) {
+                this.keychain = KeychainWithCertsSpec.build()
+                        .name(name().toLowerCase() + ".keychain")
+                        .addCert(CertificateRequest.build()
+                                .userName(name().toLowerCase())
+                                .type(Objects.requireNonNull(certificateType)))
+                        .create();
+            }
+
+            static List<KeychainWithCertsSpec> signingEnv() {
+                return Stream.of(values()).map(v -> {
+                    return v.keychain;
+                }).toList();
+            }
+
+            CertificateType certificateType() {
+                return keychain.certificateRequests().getFirst().type();
+            }
+
+            ResolvedKeychain keychain() {
+                return new ResolvedKeychain(keychain).toMock(VALUE.env());
+            }
+
+            private final KeychainWithCertsSpec keychain;
+        }
+
+        static final MacSignMockUtils.SignEnv VALUE = new MacSignMockUtils.SignEnv(SingleCertificateKeychain.signingEnv());
+    }
 }
diff --git a/test/langtools/jdk/javadoc/doclet/testSpecTag/TestSpecTag.java b/test/langtools/jdk/javadoc/doclet/testSpecTag/TestSpecTag.java
index e914f8022fd..1c3e8306d7b 100644
--- a/test/langtools/jdk/javadoc/doclet/testSpecTag/TestSpecTag.java
+++ b/test/langtools/jdk/javadoc/doclet/testSpecTag/TestSpecTag.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2021, 2026, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -23,7 +23,7 @@
 
 /*
  * @test
- * @bug 6251738 8226279 8297802 8305407
+ * @bug 6251738 8226279 8297802 8305407 8309748
  * @summary JDK-8226279 javadoc should support a new at-spec tag
  * @library /tools/lib ../../lib
  * @modules jdk.javadoc/jdk.javadoc.internal.tool
@@ -343,16 +343,15 @@ public class TestSpecTag extends JavadocTester {
 
         checkOutput("external-specs.html", true,
                 """
-                    <div class="table-tabs" role="tablist" aria-orientation="horizontal">\
-                    <button id="external-specs-tab0" role="tab" aria-selected="true" aria-controls="external-specs.tabpanel" \
-                    tabindex="0" onkeydown="switchTab(event)" onclick="show('external-specs', 'external-specs', 2)" \
-                    class="active-table-tab">All Specifications</button>\
-                    <button id="external-specs-tab1" role="tab" aria-selected="false" aria-controls="external-specs.tabpanel" \
-                    tabindex="-1" onkeydown="switchTab(event)" onclick="show('external-specs', 'external-specs-tab1', 2)" \
-                    class="table-tab">example.com</button>\
-                    <button id="external-specs-tab2" role="tab" aria-selected="false" aria-controls="external-specs.tabpanel" \
-                    tabindex="-1" onkeydown="switchTab(event)" onclick="show('external-specs', 'external-specs-tab2', 2)" \
-                    class="table-tab">example.net</button></div>
+                    <label for="specs-by-domain">Show specifications by host name:</label> <select id="specs-by-domain">
+                    <option value>All host names</option>
+                    <option value="1">example.com</option>
+                    <option value="2">example.net</option>
+                    </select>
+                    <div id="external-specs">
+                    <div class="table-tabs">
+                    <div class="caption"><span>External Specifications</span></div>
+                    </div>
                     <div id="external-specs.tabpanel" role="tabpanel" aria-labelledby="external-specs-tab0">
                     <div class="summary-table two-column-summary">
                     <div class="table-header col-first">Specification</div>
@@ -369,7 +368,25 @@ public class TestSpecTag extends JavadocTester {
                     <ul class="ref-list">
                     <li><code><a href="p/C.html#example-2">class p.C</a></code></li>
                     </ul>
-                    </div>""");
+                    </div>""",
+                """
+                    <script type="text/javascript">let select = document.getElementById('specs-by-domain');
+                    select.addEventListener("change", selectHost);
+                    addEventListener("pageshow", selectHost);
+                    function selectHost() {
+                        const selectedClass = select.value ? "external-specs-tab" + select.value : "external-specs";
+                        let tabPanel = document.getElementById("external-specs.tabpanel");
+                        let count = 0;
+                        tabPanel.querySelectorAll("div.external-specs").forEach(function(elem) {
+                            elem.style.display = elem.classList.contains(selectedClass) ? "" : "none";
+                            if (elem.style.display === "") {
+                                let isEvenRow = count++ % 4 < 2;
+                                toggleStyle(elem.classList, isEvenRow, evenRowColor, oddRowColor);
+                            }
+                        });
+                    }
+                    selectHost();
+                    </script>""");
     }
 
     @Test
diff --git a/test/langtools/tools/javac/annotations/typeAnnotations/TypeAnnotationsPositionsOnRecords.java b/test/langtools/tools/javac/annotations/typeAnnotations/TypeAnnotationsPositionsOnRecords.java
index dfa266ef035..b8ee32fcacd 100644
--- a/test/langtools/tools/javac/annotations/typeAnnotations/TypeAnnotationsPositionsOnRecords.java
+++ b/test/langtools/tools/javac/annotations/typeAnnotations/TypeAnnotationsPositionsOnRecords.java
@@ -78,6 +78,17 @@ public class TypeAnnotationsPositionsOnRecords {
             record Record6(String t1, @Nullable String t2) {
                 public Record6 {}
             }
+
+            class Test2 {
+                @Target(ElementType.TYPE_USE)
+                @Retention(RetentionPolicy.RUNTIME)
+                public @interface Anno {}
+
+                class Foo {}
+                record Record7(Test2.@Anno Foo foo) {
+                    public Record7 {} // compact constructor
+                }
+            }
             """;
 
     public static void main(String... args) throws Exception {
@@ -100,6 +111,8 @@ public class TypeAnnotationsPositionsOnRecords {
                 "Record5.class").toUri()), 1);
         checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
                 "Record6.class").toUri()), 1);
+        checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
+                "Test2$Record7.class").toUri()), 0);
     }
 
     void compileTestClass() throws Exception {
@@ -110,6 +123,7 @@ public class TypeAnnotationsPositionsOnRecords {
 
     void checkClassFile(final File cfile, int... taPositions) throws Exception {
         ClassModel classFile = ClassFile.of().parse(cfile.toPath());
+        System.err.println("-----------loading " + cfile.getPath());
         int accessorPos = 0;
         int checkedAccessors = 0;
         for (MethodModel method : classFile.methods()) {
diff --git a/test/langtools/tools/javac/records/RecordCompilationTests.java b/test/langtools/tools/javac/records/RecordCompilationTests.java
index a8384ba4692..48b5cdd8588 100644
--- a/test/langtools/tools/javac/records/RecordCompilationTests.java
+++ b/test/langtools/tools/javac/records/RecordCompilationTests.java
@@ -2169,4 +2169,56 @@ class RecordCompilationTests extends CompilationTestCase {
                 """
         );
     }
+
+    @Test
+    void testDeprecatedJavadoc() {
+        String[] previousOptions = getCompileOptions();
+        try {
+            setCompileOptions(new String[] {"-Xlint:deprecation"});
+            assertOKWithWarning("compiler.warn.has.been.deprecated",
+                """
+                record R(
+                    /**
+                     * @deprecated
+                     */
+                    @Deprecated
+                    int i
+                ) {}
+                class Client {
+                    R r;
+                    int j = r.i();
+                }
+                """
+            );
+            assertOKWithWarning("compiler.warn.has.been.deprecated",
+                """
+                record R(
+                    @Deprecated
+                    int i
+                ) {}
+                class Client {
+                    R r;
+                    int j = r.i();
+                }
+                """
+            );
+            // javadoc tag only has no effect
+            assertOK(
+                    """
+                    record R(
+                        /**
+                         * @deprecated
+                         */
+                        int i
+                    ) {}
+                    class Client {
+                        R r;
+                        int j = r.i();
+                    }
+                    """
+            );
+        } finally {
+            setCompileOptions(previousOptions);
+        }
+    }
 }
diff --git a/test/lib/jdk/test/lib/util/ZipUtils.java b/test/lib/jdk/test/lib/util/ZipUtils.java
new file mode 100644
index 00000000000..a1568e51cc1
--- /dev/null
+++ b/test/lib/jdk/test/lib/util/ZipUtils.java
@@ -0,0 +1,247 @@
+/*
+ * Copyright (c) 2023, 2026, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package jdk.test.lib.util;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.channels.FileChannel;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.StandardOpenOption;
+import java.util.EnumSet;
+import java.util.HexFormat;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipFile;
+import java.util.zip.ZipOutputStream;
+
+/**
+ * This class consists exclusively of static utility methods that are useful
+ * for creating and manipulating ZIP files.
+ */
+public final class ZipUtils {
+    // Some ZipFile constants for manipulating the 'End of central directory record' (END header)
+    private static final int ENDHDR = ZipFile.ENDHDR; // End of central directory record size
+    private static final int ENDSIZ = ZipFile.ENDSIZ; // Offset of CEN size field within ENDHDR
+    private static final int ENDOFF = ZipFile.ENDOFF; // Offset of CEN offset field within ENDHDR
+    // Expected message when CEN size does not match file size
+    public static final String INVALID_CEN_BAD_SIZE = "invalid END header (bad central directory size)";
+    // Expected message when CEN offset is too large
+    public static final String INVALID_CEN_BAD_OFFSET = "invalid END header (bad central directory offset)";
+    // Expected message when CEN size is too large
+    public static final String INVALID_CEN_SIZE_TOO_LARGE = "invalid END header (central directory size too large)";
+    // Expected message when total entry count is too large
+    public static final String INVALID_BAD_ENTRY_COUNT = "invalid END header (total entries count too large)";
+
+    private ZipUtils() { }
+
+    /**
+     * Create an ZIP file with a single entry, then modify the CEN size
+     * in the 'End of central directory record' (END header)  to the given size.
+     *
+     * The CEN is optionally "inflated" with trailing zero bytes such that
+     * its actual size matches the one stated in the END header.
+     *
+     * The CEN offset is optiontially adjusted by the given amount
+     *
+     * The resulting ZIP is technically not valid, but it does allow us
+     * to test that large or invalid CEN sizes are rejected
+     * @param cenSize the CEN size to put in the END record
+     * @param inflateCen if true, zero-pad the CEN to the desired size
+     * @param cenOffAdjust Adjust the CEN offset field of the END record with this amount
+     * @throws IOException if an error occurs
+     */
+    public static Path zipWithModifiedEndRecord(int cenSize,
+                                          boolean inflateCen,
+                                          int cenOffAdjust,
+                                          Path zip) throws IOException {
+        // A byte buffer for reading the END
+        ByteBuffer buffer = ByteBuffer.wrap(templateZip()).order(ByteOrder.LITTLE_ENDIAN);
+
+        // Offset of the END header
+        int endOffset = buffer.limit() - ENDHDR;
+
+        // Modify the CEN size
+        int sizeOffset = endOffset + ENDSIZ;
+        int currentCenSize = buffer.getInt(sizeOffset);
+        buffer.putInt(sizeOffset, cenSize);
+
+        // Optionally modify the CEN offset
+        if (cenOffAdjust != 0) {
+            int offOffset = endOffset + ENDOFF;
+            int currentCenOff = buffer.getInt(offOffset);
+            buffer.putInt(offOffset, currentCenOff + cenOffAdjust);
+        }
+        // When creating a sparse file, the file must not already exit
+        Files.deleteIfExists(zip);
+
+        // Open a FileChannel for writing a sparse file
+        EnumSet<StandardOpenOption> options = EnumSet.of(StandardOpenOption.CREATE_NEW,
+                StandardOpenOption.WRITE,
+                StandardOpenOption.SPARSE);
+
+        try (FileChannel channel = FileChannel.open(zip, options)) {
+            // Write everything up to END
+            channel.write(buffer.slice(0, buffer.limit() - ENDHDR));
+            if (inflateCen) {
+                // Inject "empty bytes" to make the actual CEN size match the END
+                int injectBytes = cenSize - currentCenSize;
+                channel.position(channel.position() + injectBytes);
+            }
+            // Write the modified END
+            channel.write(buffer.slice(buffer.limit() - ENDHDR, ENDHDR));
+        }
+        return zip;
+    }
+
+    /**
+     * Create a small Zip64 ZIP file, then modify the Zip64 END header
+     * with a possibly very large total entry count
+     *
+     * @param zip file to write to
+     * @param totalEntries the number of entries wanted in the Zip64 END header
+     * @return the modified ZIP file
+     * @throws IOException if an unexpeced IO error occurs
+     */
+    public static Path zip64WithModifiedTotalEntries(Path zip, long totalEntries) throws IOException {
+        /**
+         * A small ZIP using the ZIP64 format.
+         *
+         * ZIP created using: "echo -n hello | zip zip64.zip -"
+         * Hex encoded using: "cat zip64.zip | xxd -ps"
+         *
+         * The file has the following structure:
+         *
+         * 0000 LOCAL HEADER #1       04034B50
+         * 0004 Extract Zip Spec      2D '4.5'
+         * 0005 Extract OS            00 'MS-DOS'
+         * 0006 General Purpose Flag  0000
+         * 0008 Compression Method    0000 'Stored'
+         * 000A Last Mod Time         5947AB78 'Mon Oct  7 21:27:48 2024'
+         * 000E CRC                   363A3020
+         * 0012 Compressed Length     FFFFFFFF
+         * 0016 Uncompressed Length   FFFFFFFF
+         * 001A Filename Length       0001
+         * 001C Extra Length          0014
+         * 001E Filename              '-'
+         * 001F Extra ID #0001        0001 'ZIP64'
+         * 0021   Length              0010
+         * 0023   Uncompressed Size   0000000000000006
+         * 002B   Compressed Size     0000000000000006
+         * 0033 PAYLOAD               hello.
+         *
+         * 0039 CENTRAL HEADER #1     02014B50
+         * 003D Created Zip Spec      1E '3.0'
+         * 003E Created OS            03 'Unix'
+         * 003F Extract Zip Spec      2D '4.5'
+         * 0040 Extract OS            00 'MS-DOS'
+         * 0041 General Purpose Flag  0000
+         * 0043 Compression Method    0000 'Stored'
+         * 0045 Last Mod Time         5947AB78 'Mon Oct  7 21:27:48 2024'
+         * 0049 CRC                   363A3020
+         * 004D Compressed Length     00000006
+         * 0051 Uncompressed Length   FFFFFFFF
+         * 0055 Filename Length       0001
+         * 0057 Extra Length          000C
+         * 0059 Comment Length        0000
+         * 005B Disk Start            0000
+         * 005D Int File Attributes   0001
+         *      [Bit 0]               1 Text Data
+         * 005F Ext File Attributes   11B00000
+         * 0063 Local Header Offset   00000000
+         * 0067 Filename              '-'
+         * 0068 Extra ID #0001        0001 'ZIP64'
+         * 006A   Length              0008
+         * 006C   Uncompressed Size   0000000000000006
+         *
+         * 0074 ZIP64 END CENTRAL DIR 06064B50
+         *      RECORD
+         * 0078 Size of record        000000000000002C
+         * 0080 Created Zip Spec      1E '3.0'
+         * 0081 Created OS            03 'Unix'
+         * 0082 Extract Zip Spec      2D '4.5'
+         * 0083 Extract OS            00 'MS-DOS'
+         * 0084 Number of this disk   00000000
+         * 0088 Central Dir Disk no   00000000
+         * 008C Entries in this disk  0000000000000001
+         * 0094 Total Entries         0000000000000001
+         * 009C Size of Central Dir   000000000000003B
+         * 00A4 Offset to Central dir 0000000000000039
+         *
+         * 00AC ZIP64 END CENTRAL DIR 07064B50
+         *      LOCATOR
+         * 00B0 Central Dir Disk no   00000000
+         * 00B4 Offset to Central dir 0000000000000074
+         * 00BC Total no of Disks     00000001
+         *
+         * 00C0 END CENTRAL HEADER    06054B50
+         * 00C4 Number of this disk   0000
+         * 00C6 Central Dir Disk no   0000
+         * 00C8 Entries in this disk  0001
+         * 00CA Total Entries         0001
+         * 00CC Size of Central Dir   0000003B
+         * 00D0 Offset to Central Dir FFFFFFFF
+         * 00D4 Comment Length        0000
+         */
+
+        byte[] zipBytes = HexFormat.of().parseHex("""
+                504b03042d000000000078ab475920303a36ffffffffffffffff01001400
+                2d010010000600000000000000060000000000000068656c6c6f0a504b01
+                021e032d000000000078ab475920303a3606000000ffffffff01000c0000
+                00000001000000b011000000002d010008000600000000000000504b0606
+                2c000000000000001e032d00000000000000000001000000000000000100
+                0000000000003b000000000000003900000000000000504b060700000000
+                740000000000000001000000504b050600000000010001003b000000ffff
+                ffff0000
+                """.replaceAll("\n",""));
+
+        // Buffer to manipulate the above ZIP
+        ByteBuffer buf = ByteBuffer.wrap(zipBytes).order(ByteOrder.LITTLE_ENDIAN);
+        // Offset of the 'total entries' in the 'ZIP64 END CENTRAL DIR' record
+        // Update ZIP64 entry count to a value which cannot possibly fit in the small CEN
+        buf.putLong(0x94, totalEntries);
+        // The corresponding END field needs the ZIP64 magic value
+        buf.putShort(0xCA, (short) 0xFFFF);
+        // Write the ZIP to disk
+        Files.write(zip, zipBytes);
+        return zip;
+    }
+
+    /**
+     * Produce a byte array of a ZIP with a single entry
+     *
+     * @throws IOException if an error occurs
+     */
+    private static byte[] templateZip() throws IOException {
+        ByteArrayOutputStream bout = new ByteArrayOutputStream();
+        try (ZipOutputStream zo = new ZipOutputStream(bout)) {
+            ZipEntry entry = new ZipEntry("duke.txt");
+            zo.putNextEntry(entry);
+            zo.write("duke".getBytes(StandardCharsets.UTF_8));
+        }
+        return bout.toByteArray();
+    }
+}
diff --git a/test/micro/org/openjdk/bench/jdk/incubator/vector/Float16OperationsBenchmark.java b/test/micro/org/openjdk/bench/jdk/incubator/vector/Float16OperationsBenchmark.java
index ebbfbb01cc6..cbfe9958924 100644
--- a/test/micro/org/openjdk/bench/jdk/incubator/vector/Float16OperationsBenchmark.java
+++ b/test/micro/org/openjdk/bench/jdk/incubator/vector/Float16OperationsBenchmark.java
@@ -20,7 +20,7 @@
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
-package org.openjdk.bench.java.lang;
+package org.openjdk.bench.jdk.incubator.vector;
 
 import java.util.stream.IntStream;
 import java.util.concurrent.TimeUnit;