Upgrade to 4.4.50-rt62

[kvmfornfv.git] / kernel / arch / x86 / include / asm / pvclock.h

diff --git a/kernel/arch/x86/include/asm/pvclock.h b/kernel/arch/x86/include/asm/pvclock.h
index 7a6bed5..baad72e 100644 (file)
--- a/kernel/arch/x86/include/asm/pvclock.h
+++ b/kernel/arch/x86/include/asm/pvclock.h
@@ -76,6 +76,8 @@ unsigned __pvclock_read_cycles(const struct pvclock_vcpu_time_info *src,
        u8 ret_flags;
 
        version = src->version;
+       /* Make the latest version visible */
+       smp_rmb();
 
        offset = pvclock_get_nsec_offset(src);
        ret = src->system_time + offset;