make remove_stack_guard_pages return void

src/hotspot/os/aix/os_aix.cpp

@@ -1733,10 +1733,9 @@ bool os::pd_create_stack_guard_pages(char* addr, size_t size) {
   return true;
 }
 
-bool os::remove_stack_guard_pages(char* addr, size_t size) {
+void os::remove_stack_guard_pages(char* addr, size_t size) {
   // Do not call this; no need to commit stack pages on AIX.
   ShouldNotReachHere();
-  return true;
 }
 
 void os::pd_realign_memory(char *addr, size_t bytes, size_t alignment_hint) {

src/hotspot/os/bsd/os_bsd.cpp

@@ -1763,9 +1763,8 @@ bool os::pd_create_stack_guard_pages(char* addr, size_t size) {
 
 // If this is a growable mapping, remove the guard pages entirely by
 // munmap()ping them.  If not, just call uncommit_memory().
-bool os::remove_stack_guard_pages(char* addr, size_t size) {
+void os::remove_stack_guard_pages(char* addr, size_t size) {
   os::uncommit_memory(addr, size, false);
-  return true;
 }
 
 // 'requested_addr' is only treated as a hint, the return value may or

src/hotspot/os/linux/os_linux.cpp

@@ -3566,14 +3566,15 @@ bool os::pd_create_stack_guard_pages(char* addr, size_t size) {
 // It's safe to always unmap guard pages for primordial thread because we
 // always place it right after end of the mapped region.
 
-bool os::remove_stack_guard_pages(char* addr, size_t size) {
-  uintptr_t stack_extent, stack_base;
+void os::remove_stack_guard_pages(char* addr, size_t size) {
 
   if (os::is_primordial_thread()) {
-    return ::munmap(addr, size) == 0;
+    if (::munmap(addr, size) != 0) {
+      fatal("Failed to munmap " RANGEFMT, RANGEFMTARGS(addr, size));
+    }
+    return;
   }
   os::uncommit_memory(addr, size, false);
-  return true;
 }
 
 // 'requested_addr' is only treated as a hint, the return value may or

src/hotspot/os/windows/os_windows.cpp

@@ -3656,9 +3656,8 @@ bool os::pd_create_stack_guard_pages(char* addr, size_t size) {
   return os::commit_memory(addr, size, !ExecMem);
 }
 
-bool os::remove_stack_guard_pages(char* addr, size_t size) {
+void os::remove_stack_guard_pages(char* addr, size_t size) {
   os::uncommit_memory(addr, size, false);
-  return true;
 }
 
 static bool protect_pages_individually(char* addr, size_t bytes, unsigned int p, DWORD *old_status) {

src/hotspot/share/runtime/os.hpp

@@ -515,7 +515,7 @@ class os: AllStatic {
   static bool   unguard_memory(char* addr, size_t bytes);
   static bool   create_stack_guard_pages(char* addr, size_t bytes);
   static bool   pd_create_stack_guard_pages(char* addr, size_t bytes);
-  static bool   remove_stack_guard_pages(char* addr, size_t bytes);
+  static void   remove_stack_guard_pages(char* addr, size_t bytes);
   // Helper function to create a new file with template jvmheap.XXXXXX.
   // Returns a valid fd on success or else returns -1
   static int create_file_for_heap(const char* dir);

src/hotspot/share/runtime/stackOverflow.cpp

@@ -116,13 +116,8 @@ void StackOverflow::remove_stack_guard_pages() {
   size_t len = stack_guard_zone_size();
 
   if (os::must_commit_stack_guard_pages()) {
-    if (os::remove_stack_guard_pages((char *) low_addr, len)) {
+    os::remove_stack_guard_pages((char *) low_addr, len);
     _stack_guard_state = stack_guard_unused;
-    } else {
-      log_warning(os, thread)("Attempt to deallocate stack guard pages failed ("
-        PTR_FORMAT "-" PTR_FORMAT ").", p2i(low_addr), p2i(low_addr + len));
-      return;
-    }
   } else {
     if (_stack_guard_state == stack_guard_unused) return;
     if (os::unguard_memory((char *) low_addr, len)) {