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linux-stable/drivers/xen/events
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Juergen Gross 3de218ff39 xen/events: reset active flag for lateeoi events later 
In order to avoid a race condition for user events when changing
cpu affinity reset the active flag only when EOI-ing the event.

This is working fine as all user events are lateeoi events. Note that
lateeoi_ack_mask_dynirq() is not modified as there is no explicit call
to xen_irq_lateeoi() expected later.

Cc: stable@vger.kernel.org
Reported-by: Julien Grall <julien@xen.org>
Fixes: b6622798bc ("xen/events: avoid handling the same event on two cpus at the same time")
Tested-by: Julien Grall <julien@xen.org>
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrvsky@oracle.com>
Link: https://lore.kernel.org/r/20210623130913.9405-1-jgross@suse.com
Signed-off-by: Juergen Gross <jgross@suse.com>
2021-06-24 12:52:36 +02:00
..
events_2l.c xen/events: don't unmask an event channel when an eoi is pending 2021-03-10 16:37:29 -06:00
events_base.c xen/events: reset active flag for lateeoi events later 2021-06-24 12:52:36 +02:00
events_fifo.c xen/events: don't unmask an event channel when an eoi is pending 2021-03-10 16:37:29 -06:00
events_internal.h xen/events: don't unmask an event channel when an eoi is pending 2021-03-10 16:37:29 -06:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00