X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=arch%2Farch-x86_64.h;h=979c3206185f87334488d60179ff9918e13642cf;hp=4f75addc1be14fd35d46e9631a57b50978bb6023;hb=db6defc77508f5bf217f0a6768d13426eee21119;hpb=c6effc3eb105f74777198ef6ac0f8ea2ba512a9b

diff --git a/arch/arch-x86_64.h b/arch/arch-x86_64.h
index 4f75addc..979c3206 100644
--- a/arch/arch-x86_64.h
+++ b/arch/arch-x86_64.h
@@ -29,7 +29,8 @@
 
 #define FIO_HAVE_SYSLET
 
-#define nop	__asm__ __volatile__("rep;nop": : :"memory")
+#define nop		__asm__ __volatile__("rep;nop": : :"memory")
+#define read_barrier()	asm volatile("lfence":::"memory")
 
 static inline unsigned long fio_ffz(unsigned long bitmask)
 {