From 3a72145929314f28200576f42b6db773e4a57e84 Mon Sep 17 00:00:00 2001
From: StiX <stix.dima@gmail.com>
Date: Mon, 2 Feb 2026 11:51:32 +0100
Subject: [PATCH] Replaced WFE instruction with ISB in mi_atomic_yield on ARM64
 for non Windows as it significantly improves performance

---
 include/mimalloc/atomic.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/mimalloc/atomic.h b/include/mimalloc/atomic.h
index e8bac316b..9bd5f7636 100644
--- a/include/mimalloc/atomic.h
+++ b/include/mimalloc/atomic.h
@@ -382,7 +382,7 @@ static inline void mi_atomic_yield(void) {
 }
 #elif defined(__aarch64__)
 static inline void mi_atomic_yield(void) {
-  __asm__ volatile("wfe");
+  __asm__ volatile("isb");
 }
 #elif defined(__arm__)
 #if __ARM_ARCH >= 7