Serialize RDTSC so its executed inside kvmclock_read section. Fixes https://bugzilla.redhat.com/show_bug.cgi?id=922285 Signed-off-by: Marcelo Tosatti <mtosatti@xxxxxxxxxx> diff --git a/x86/kvmclock.c b/x86/kvmclock.c index 0624da3..5b831c5 100644 --- a/x86/kvmclock.c +++ b/x86/kvmclock.c @@ -177,10 +177,10 @@ cycle_t pvclock_clocksource_read(struct pvclock_vcpu_time_info *src) do { version = pvclock_get_time_values(&shadow, src); - barrier(); + mb(); offset = pvclock_get_nsec_offset(&shadow); ret = shadow.system_timestamp + offset; - barrier(); + mb(); } while (version != src->version); if ((valid_flags & PVCLOCK_RAW_CYCLE_BIT) || -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
