From 78471f5a3ba65ae39dece1b956e551beaaa3164a Mon Sep 17 00:00:00 2001 From: Juergen Gross Date: Mon, 12 Apr 2021 08:28:45 +0200 Subject: [PATCH] xen/events: fix setting irq affinity The backport of upstream patch 25da4618af240fbec61 ("xen/events: don't unmask an event channel when an eoi is pending") introduced a regression for stable kernels 5.10 and older: setting IRQ affinity for IRQs related to interdomain events would no longer work, as moving the IRQ to its new cpu was not included in the irq_ack callback for those events. Fix that by adding the needed call. Note that kernels 5.11 and later don't need the explicit moving of the IRQ to the target cpu in the irq_ack callback, due to a rework of the affinity setting in kernel 5.11. Signed-off-by: Juergen Gross Signed-off-by: Greg Kroah-Hartman --- drivers/xen/events/events_base.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c index bc92faf26b167..ea307f40cab19 100644 --- a/drivers/xen/events/events_base.c +++ b/drivers/xen/events/events_base.c @@ -1780,7 +1780,7 @@ static void lateeoi_ack_dynirq(struct irq_data *data) if (VALID_EVTCHN(evtchn)) { do_mask(info, EVT_MASK_REASON_EOI_PENDING); - event_handler_exit(info); + ack_dynirq(data); } } @@ -1791,7 +1791,7 @@ static void lateeoi_mask_ack_dynirq(struct irq_data *data) if (VALID_EVTCHN(evtchn)) { do_mask(info, EVT_MASK_REASON_EXPLICIT); - event_handler_exit(info); + ack_dynirq(data); } }