]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
xen/events: reset active flag for lateeoi events later
authorJuergen Gross <jgross@suse.com>
Wed, 23 Jun 2021 13:09:13 +0000 (15:09 +0200)
committerJuergen Gross <jgross@suse.com>
Thu, 24 Jun 2021 10:52:36 +0000 (12:52 +0200)
commit3de218ff39b9e3f0d453fe3154f12a174de44b25
tree992878585c4a8ec453556fa77989796fe510849d
parent107866a8eb0b664675a260f1ba0655010fac1e08
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: b6622798bc50b62 ("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>
drivers/xen/events/events_base.c