diff options
| author | David Vrabel <david.vrabel@citrix.com> | 2014-02-05 14:13:10 (GMT) |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2014-02-11 15:12:34 (GMT) |
| commit | 97253eeeb792d61ed22d397cfa236bd0311e4caf (patch) | |
| tree | 02bf0848fd9f09366adcda001c024042baded341 /drivers/xen | |
| parent | afca50132cfa7bfc5646676d8c67dc18454f38f8 (diff) | |
| download | linux-97253eeeb792d61ed22d397cfa236bd0311e4caf.tar.xz | |
xen/events: bind all new interdomain events to VCPU0
Commit fc087e10734a4d3e40693fc099461ec1270b3fff (xen/events: remove
unnecessary init_evtchn_cpu_bindings()) causes a regression.
The kernel-side VCPU binding was not being correctly set for newly
allocated or bound interdomain events. In ARM guests where 2-level
events were used, this would result in no interdomain events being
handled because the kernel-side VCPU masks would all be clear.
x86 guests would work because the irq affinity was set during irq
setup and this would set the correct kernel-side VCPU binding.
Fix this by properly initializing the kernel-side VCPU binding in
bind_evtchn_to_irq().
Reported-and-tested-by: Julien Grall <julien.grall@linaro.org>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'drivers/xen')
| -rw-r--r-- | drivers/xen/events/events_base.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c index 4672e00..f4a9e33 100644 --- a/drivers/xen/events/events_base.c +++ b/drivers/xen/events/events_base.c @@ -862,6 +862,8 @@ int bind_evtchn_to_irq(unsigned int evtchn) irq = ret; goto out; } + /* New interdomain events are bound to VCPU 0. */ + bind_evtchn_to_cpu(evtchn, 0); } else { struct irq_info *info = info_for_irq(irq); WARN_ON(info == NULL || info->type != IRQT_EVTCHN); |