2 files changed, 9 insertions, 0 deletions

diff --git a/include/asm-x86/system_32.h b/include/asm-x86/system_32.h
index 1d6fb3afa533..db6283eb5e46 100644
--- a/include/asm-x86/system_32.h
+++ b/include/asm-x86/system_32.h
@@ -161,6 +161,10 @@ static inline void native_wbinvd(void)
         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>
diff --git a/include/asm-x86/system_64.h b/include/asm-x86/system_64.h
index fb4bcf99e665..ec4c29bcfcb0 100644
--- a/include/asm-x86/system_64.h
+++ b/include/asm-x86/system_64.h
@@ -137,6 +137,11 @@ static inline void write_cr8(unsigned long val)
 
 #endif  /* __KERNEL__ */
 
+static inline void clflush(volatile void *__p)
+{
+        asm volatile("clflush %0" : "+m" (*(char __force *)__p));
+}
+
 #define nop() __asm__ __volatile__ ("nop")
 
 #ifdef CONFIG_SMP