From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Vrabel Subject: [PATCHv1] xen/events: bind all new interdomain events to VCPU0 Date: Wed, 5 Feb 2014 14:13:10 +0000 Message-ID: <1391609590-4449-1-git-send-email-david.vrabel@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: xen-devel@lists.xen.org Cc: Boris Ostrovsky , Julien Grall , David Vrabel List-Id: xen-devel@lists.xenproject.org From: David Vrabel 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 Signed-off-by: David Vrabel --- 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); -- 1.7.2.5