qubes-linux-kernel/patches.xen/irq-bind-debug-log.patch

diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c
index 524c221..acb29f4 100644
--- a/drivers/xen/events/events_base.c
+++ b/drivers/xen/events/events_base.c
@@ -519,7 +519,7 @@ static unsigned int __startup_pirq(unsigned int irq)
 					BIND_PIRQ__WILL_SHARE : 0;
 	rc = HYPERVISOR_event_channel_op(EVTCHNOP_bind_pirq, &bind_pirq);
 	if (rc != 0) {
-		pr_warn("Failed to obtain physical IRQ %d\n", irq);
+		pr_warn("Failed to obtain physical IRQ %d (error %d)\n", irq, rc);
 		return 0;
 	}
 	evtchn = bind_pirq.port;