Commit 5e0018b3 authored by Davidlohr Bueso's avatar Davidlohr Bueso Committed by Paolo Bonzini

kvm: Serialize wq active checks in kvm_vcpu_wake_up()

This is a generic call and can be suceptible to races
in reading the wq task_list while another task is adding
itself to the list. Add a full barrier by using the
swq_has_sleeper() helper.
Signed-off-by: default avatarDavidlohr Bueso <[email protected]>
Signed-off-by: default avatarPaolo Bonzini <[email protected]>
parent a0cff57b
......@@ -2187,7 +2187,7 @@ bool kvm_vcpu_wake_up(struct kvm_vcpu *vcpu)
struct swait_queue_head *wqp;
wqp = kvm_arch_vcpu_wq(vcpu);
if (swait_active(wqp)) {
if (swq_has_sleeper(wqp)) {
return true;
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment