x86/vdso: Use lfence instead of rep and nop

Signed-off-by: Alexandre Frade <kernel@xanmod.org>
xanmod · Jan 8, 2024 · 3da8a0b · 3da8a0b
1 parent 79291a5
commit 3da8a0b
Showing 1 changed file with 1 addition and 1 deletion.
diff --git 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)