Merge tag 'iommu-fixes-v4.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git...

[cascardo/linux.git] / drivers / xen / events / events_base.c

diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c
index 488017a..cb7138c 100644 (file)
--- a/drivers/xen/events/events_base.c
+++ b/drivers/xen/events/events_base.c
@@ -484,9 +484,19 @@ static void eoi_pirq(struct irq_data *data)
        struct physdev_eoi eoi = { .irq = pirq_from_irq(data->irq) };
        int rc = 0;
 
-       irq_move_irq(data);
+       if (!VALID_EVTCHN(evtchn))
+               return;
 
-       if (VALID_EVTCHN(evtchn))
+       if (unlikely(irqd_is_setaffinity_pending(data))) {
+               int masked = test_and_set_mask(evtchn);
+
+               clear_evtchn(evtchn);
+
+               irq_move_masked_irq(data);
+
+               if (!masked)
+                       unmask_evtchn(evtchn);
+       } else
                clear_evtchn(evtchn);
 
        if (pirq_needs_eoi(data->irq)) {
@@ -1357,9 +1367,19 @@ static void ack_dynirq(struct irq_data *data)
 {
        int evtchn = evtchn_from_irq(data->irq);
 
-       irq_move_irq(data);
+       if (!VALID_EVTCHN(evtchn))
+               return;
 
-       if (VALID_EVTCHN(evtchn))
+       if (unlikely(irqd_is_setaffinity_pending(data))) {
+               int masked = test_and_set_mask(evtchn);
+
+               clear_evtchn(evtchn);
+
+               irq_move_masked_irq(data);
+
+               if (!masked)
+                       unmask_evtchn(evtchn);
+       } else
                clear_evtchn(evtchn);
 }