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authorLan Tianyu <tianyu.lan@intel.com>2016-03-13 11:10:26 +0800
committerPaolo Bonzini <pbonzini@redhat.com>2016-03-22 16:38:30 +0100
commita30a0509165d9bc5a3107894338e6adf4be7b60f (patch)
treedc879d2b7ee3e3d533f068b76f158b65efa4204f /virt/kvm
parent36ca7e0a577aa61f648953886958e50398732d63 (diff)
downloadlinux-a30a0509165d9bc5a3107894338e6adf4be7b60f.tar.gz
KVM: Replace smp_mb() with smp_mb_after_atomic() in the kvm_make_all_cpus_request()
Signed-off-by: Lan Tianyu <tianyu.lan@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'virt/kvm')
-rw-r--r--virt/kvm/kvm_main.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index db021c383aa7..402590dfcf9b 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -170,8 +170,8 @@ bool kvm_make_all_cpus_request(struct kvm *kvm, unsigned int req)
kvm_make_request(req, vcpu);
cpu = vcpu->cpu;
- /* Set ->requests bit before we read ->mode */
- smp_mb();
+ /* Set ->requests bit before we read ->mode. */
+ smp_mb__after_atomic();
if (cpus != NULL && cpu != -1 && cpu != me &&
kvm_vcpu_exiting_guest_mode(vcpu) != OUTSIDE_GUEST_MODE)