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[3/7] xen/events: fix lateeoi irq acknowledgment

Message ID 20210206104932.29064-4-jgross@suse.com
State New
Headers show
Series xen/events: bug fixes and some diagnostic aids | expand

Commit Message

Jürgen Groß Feb. 6, 2021, 10:49 a.m. UTC
When having accepted an irq as result from receiving an event the
related event should be cleared. The lateeoi model is missing that,
resulting in a continuous stream of events being signalled.

Fixes: 54c9de89895e0a ("xen/events: add a new late EOI evtchn framework")
Cc: stable@vger.kernel.org
Signed-off-by: Juergen Gross <jgross@suse.com>
---
 drivers/xen/events/events_base.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c
index 6a836d131e73..7b26ef817f8b 100644
--- a/drivers/xen/events/events_base.c
+++ b/drivers/xen/events/events_base.c
@@ -1826,6 +1826,7 @@  static void lateeoi_ack_dynirq(struct irq_data *data)
 	if (VALID_EVTCHN(evtchn)) {
 		info->eoi_pending = true;
 		mask_evtchn(evtchn);
+		clear_evtchn(evtchn);
 	}
 }
 
@@ -1838,6 +1839,7 @@  static void lateeoi_mask_ack_dynirq(struct irq_data *data)
 		info->masked = true;
 		info->eoi_pending = true;
 		mask_evtchn(evtchn);
+		clear_evtchn(evtchn);
 	}
 }