1 files changed, 4 insertions, 0 deletions

diff --git a/virt/kvm/async_pf.c b/virt/kvm/async_pf.c
index 44660aee335f..77d42be6970e 100644
--- a/virt/kvm/async_pf.c
+++ b/virt/kvm/async_pf.c
@@ -94,6 +94,10 @@ static void async_pf_execute(struct work_struct *work)
 
         trace_kvm_async_pf_completed(addr, gva);
 
+        /*
+         * This memory barrier pairs with prepare_to_wait's set_current_state()
+         */
+        smp_mb();
         if (waitqueue_active(&vcpu->wq))
                 wake_up_interruptible(&vcpu->wq);