x86: Create clflush() inline, remove hardcoded wbinvd
Create an inline function for clflush(), with the proper arguments,
and use it instead of hard-coding the instruction.
This also removes one instance of hard-coded wbinvd, based on a patch
by Bauder de Oliveira Costa.
[ tglx: arch/x86 adaptation ]
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Glauber de Oliveira Costa <gcosta@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/include/asm-x86/system_32.h b/include/asm-x86/system_32.h
index 1d6fb3a..db6283e 100644
--- a/include/asm-x86/system_32.h
+++ b/include/asm-x86/system_32.h
@@ -161,6 +161,10 @@
asm volatile("wbinvd": : :"memory");
}
+static inline void clflush(volatile void *__p)
+{
+ asm volatile("clflush %0" : "+m" (*(char __force *)__p));
+}
#ifdef CONFIG_PARAVIRT
#include <asm/paravirt.h>