tree 33cf36a36d1d1a835f3f29a71cbadf0f7feaa4e0
parent e380170b3b3a08b2f69f9abd0cbc381d18f15b52
author Juergen Gross <jgross@suse.com> 1561142823 +0200
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1564125265 +0200

xen/events: fix binding user event channels to cpus

commit bce5963bcb4f9934faa52be323994511d59fd13c upstream.

When binding an interdomain event channel to a vcpu via
IOCTL_EVTCHN_BIND_INTERDOMAIN not only the event channel needs to be
bound, but the affinity of the associated IRQi must be changed, too.
Otherwise the IRQ and the event channel won't be moved to another vcpu
in case the original vcpu they were bound to is going offline.

Cc: <stable@vger.kernel.org> # 4.13
Fixes: c48f64ab472389df ("xen-evtchn: Bind dyn evtchn:qemu-dm interrupt to next online VCPU")
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>