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-rw-r--r--virt/kvm/async_pf.c4
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);