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-rw-r--r--arch/x86/kernel/smpboot.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 85dc05a3aa0..f5252c4eec8 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -1417,7 +1417,9 @@ static inline void mwait_play_dead(void)
* The WBINVD is insufficient due to the spurious-wakeup
* case where we return around the loop.
*/
+ mb();
clflush(mwait_ptr);
+ mb();
__monitor(mwait_ptr, 0, 0);
mb();
__mwait(eax, 0);