diff --git a/[refs] b/[refs]
index 6f3219561a48..ac223a693011 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 26a3e99160cfb06a0a33e25b9fb0d516e2cc680d
+refs/heads/master: 93ce99e849433ede4ce8b410b749dc0cad1100b2
diff --git a/trunk/arch/x86/kernel/tsc_sync.c b/trunk/arch/x86/kernel/tsc_sync.c
index 9ffb01c31c40..1c0dfbca87c1 100644
--- a/trunk/arch/x86/kernel/tsc_sync.c
+++ b/trunk/arch/x86/kernel/tsc_sync.c
@@ -46,7 +46,9 @@ static __cpuinit void check_tsc_warp(void)
 	cycles_t start, now, prev, end;
 	int i;
 
+	rdtsc_barrier();
 	start = get_cycles();
+	rdtsc_barrier();
 	/*
 	 * The measurement runs for 20 msecs:
 	 */
@@ -61,7 +63,9 @@ static __cpuinit void check_tsc_warp(void)
 		 */
 		__raw_spin_lock(&sync_lock);
 		prev = last_tsc;
+		rdtsc_barrier();
 		now = get_cycles();
+		rdtsc_barrier();
 		last_tsc = now;
 		__raw_spin_unlock(&sync_lock);