From 5dbea5a6b2508214fb6c8072c872f2bd3b609ed4 Mon Sep 17 00:00:00 2001
From: lxw <lxw263044@alibaba-inc.com>
Date: Mon, 21 Oct 2024 16:14:31 +0800
Subject: [PATCH] [GC] Fix activation mechanism for IOPrioritySizePolicy
 Summary: do not enable IOPrioritySizePolicy automatically on windows Testing:
 jtreg Reviewers: yyang, yude.lyd Issue:
 https://github.com/dragonwell-project/dragonwell8/issues/685

---
 hotspot/src/share/vm/runtime/arguments.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/hotspot/src/share/vm/runtime/arguments.cpp b/hotspot/src/share/vm/runtime/arguments.cpp
index 3b24d17b06..5ad03aa84b 100644
--- a/hotspot/src/share/vm/runtime/arguments.cpp
+++ b/hotspot/src/share/vm/runtime/arguments.cpp
@@ -1664,9 +1664,12 @@ void Arguments::set_parallel_gc_flags() {
       FLAG_SET_DEFAULT(MaxHeapFreeRatio, 100);
       _max_heap_free_ratio = MaxHeapFreeRatio;
     }
+#if defined(LINUX) && (defined(AMD64) || (defined(AARCH64)))
+    // Auto-Enabled only on linux-x64 or arm64
     if (FLAG_IS_DEFAULT(UseIOPrioritySizePolicy)) {
       FLAG_SET_DEFAULT(UseIOPrioritySizePolicy, true);
     }
+#endif
   }
 
   if (UseIOPrioritySizePolicy && !UseAdaptiveSizePolicy) {