del_evtchn(u, evtchn);
}
+static DEFINE_PER_CPU(int, bind_last_selected_cpu);
+
+static void evtchn_bind_interdom_next_vcpu(int evtchn)
+{
+ unsigned int selected_cpu, irq;
+ struct irq_desc *desc;
+ unsigned long flags;
+
+ irq = irq_from_evtchn(evtchn);
+ desc = irq_to_desc(irq);
+
+ if (!desc)
+ return;
+
+ raw_spin_lock_irqsave(&desc->lock, flags);
+ selected_cpu = this_cpu_read(bind_last_selected_cpu);
+ selected_cpu = cpumask_next_and(selected_cpu,
+ desc->irq_common_data.affinity, cpu_online_mask);
+
+ if (unlikely(selected_cpu >= nr_cpu_ids))
+ selected_cpu = cpumask_first_and(desc->irq_common_data.affinity,
+ cpu_online_mask);
+
+ this_cpu_write(bind_last_selected_cpu, selected_cpu);
+
+ /* unmask expects irqs to be disabled */
+ xen_rebind_evtchn_to_cpu(evtchn, selected_cpu);
+ raw_spin_unlock_irqrestore(&desc->lock, flags);
+}
+
static long evtchn_ioctl(struct file *file,
unsigned int cmd, unsigned long arg)
{
break;
rc = evtchn_bind_to_user(u, bind_interdomain.local_port);
- if (rc == 0)
+ if (rc == 0) {
rc = bind_interdomain.local_port;
+ evtchn_bind_interdom_next_vcpu(rc);
+ }
break;
}