From d9febbdfe27b3cca03316a07d9e455be0f414b20 Mon Sep 17 00:00:00 2001
From: Evgeny Astigeevich <eastig@amazon.com>
Date: Fri, 13 Aug 2021 19:27:22 +0000
Subject: [PATCH] 8258604: Use 'isb' instruction in SpinPause on linux-aarch64

Fix: SpinPause() should return 1 if it executes code.
---
 src/hotspot/os_cpu/linux_aarch64/os_linux_aarch64.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/hotspot/os_cpu/linux_aarch64/os_linux_aarch64.cpp b/src/hotspot/os_cpu/linux_aarch64/os_linux_aarch64.cpp
index bee52b54c56..123b41ee506 100644
--- a/src/hotspot/os_cpu/linux_aarch64/os_linux_aarch64.cpp
+++ b/src/hotspot/os_cpu/linux_aarch64/os_linux_aarch64.cpp
@@ -385,7 +385,7 @@ extern "C" {
     // ISB creates a small delay without consuming ALU resources.
     // This allows it to act as x86 PAUSE.
     __asm volatile("isb");
-    return 0;
+    return 1;
   }
 
   void _Copy_conjoint_jshorts_atomic(const jshort* from, jshort* to, size_t count) {