KVM: Interrupt mask notifiers for ioapic

[linux-2.6-omap-h63xx.git] / virt / kvm / irq_comm.c

diff --git a/virt/kvm/irq_comm.c b/virt/kvm/irq_comm.c
index aa5d1e5c497ef12e3fe9aa12b79865a2081e4b43..5162a411e4d2f4193916f9e022a018b1f0ce8a42 100644 (file)
--- a/virt/kvm/irq_comm.c
+++ b/virt/kvm/irq_comm.c
@@ -99,3 +99,27 @@ void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id)
                clear_bit(irq_source_id, &kvm->arch.irq_states[i]);
        clear_bit(irq_source_id, &kvm->arch.irq_sources_bitmap);
 }
+
+void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq,
+                                   struct kvm_irq_mask_notifier *kimn)
+{
+       kimn->irq = irq;
+       hlist_add_head(&kimn->link, &kvm->mask_notifier_list);
+}
+
+void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq,
+                                     struct kvm_irq_mask_notifier *kimn)
+{
+       hlist_del(&kimn->link);
+}
+
+void kvm_fire_mask_notifiers(struct kvm *kvm, int irq, bool mask)
+{
+       struct kvm_irq_mask_notifier *kimn;
+       struct hlist_node *n;
+
+       hlist_for_each_entry(kimn, n, &kvm->mask_notifier_list, link)
+               if (kimn->irq == irq)
+                       kimn->func(kimn, mask);
+}
+