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Diffstat (limited to '')
| -rw-r--r-- | drivers/xen/events/events_2l.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/xen/events/events_2l.c b/drivers/xen/events/events_2l.c index 64df919a2111..e1af5e093ff4 100644 --- a/drivers/xen/events/events_2l.c +++ b/drivers/xen/events/events_2l.c @@ -91,6 +91,8 @@ static void evtchn_2l_unmask(evtchn_port_t port) BUG_ON(!irqs_disabled()); + smp_wmb(); /* All writes before unmask must be visible. */ + if (unlikely((cpu != cpu_from_evtchn(port)))) do_hypercall = 1; else { |