From 89ee1a5517ea1e3915f4362ada3d2086b63c107e Mon Sep 17 00:00:00 2001
From: Liming Liu <lliu@openjdk.org>
Date: Thu, 9 Jan 2025 23:38:20 +0000
Subject: [PATCH] 8343978: Update the default value of CodeEntryAlignment for
 Ampere-1A and 1B

Reviewed-by: dlong, kvn
---
 src/hotspot/cpu/aarch64/vm_version_aarch64.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/hotspot/cpu/aarch64/vm_version_aarch64.cpp b/src/hotspot/cpu/aarch64/vm_version_aarch64.cpp
index 87c7862e250..418e5145f71 100644
--- a/src/hotspot/cpu/aarch64/vm_version_aarch64.cpp
+++ b/src/hotspot/cpu/aarch64/vm_version_aarch64.cpp
@@ -158,6 +158,10 @@ void VM_Version::initialize() {
     if (FLAG_IS_DEFAULT(OnSpinWaitInstCount)) {
       FLAG_SET_DEFAULT(OnSpinWaitInstCount, 2);
     }
+    if (FLAG_IS_DEFAULT(CodeEntryAlignment) &&
+        (_model == CPU_MODEL_AMPERE_1A || _model == CPU_MODEL_AMPERE_1B)) {
+      FLAG_SET_DEFAULT(CodeEntryAlignment, 32);
+    }
   }
 
   // ThunderX