0119-use-lfence-instead-of-rep-and-nop.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Arjan van de Ven <arjan@linux.intel.com>
Date: Sat, 8 Dec 2018 18:21:32 +0000
Subject: [PATCH] use lfence instead of rep and nop

---
 arch/x86/include/asm/vdso/processor.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/vdso/processor.h b/arch/x86/include/asm/vdso/processor.h
index 57b1a7034c64..e2c45674f989 100644
--- a/arch/x86/include/asm/vdso/processor.h
+++ b/arch/x86/include/asm/vdso/processor.h
@@ -10,7 +10,7 @@
 /* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */
 static __always_inline void rep_nop(void)
 {
-	asm volatile("rep; nop" ::: "memory");
+	asm volatile("lfence" ::: "memory");
 }
 
 static __always_inline void cpu_relax(void)
-- 
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