KVM: Convert mask notifiers to use irqchip/pin instead of gsi
Devices register mask notifier using gsi, but irqchip knows about
irqchip/pin, so conversion from irqchip/pin to gsi should be done before
looking for mask notifier to call.
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 8055067b..c13cc48 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -447,7 +447,8 @@
struct kvm_irq_mask_notifier *kimn);
void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq,
struct kvm_irq_mask_notifier *kimn);
-void kvm_fire_mask_notifiers(struct kvm *kvm, int irq, bool mask);
+void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin,
+ bool mask);
#ifdef __KVM_HAVE_IOAPIC
void kvm_get_intr_delivery_bitmask(struct kvm_ioapic *ioapic,
diff --git a/virt/kvm/ioapic.c b/virt/kvm/ioapic.c
index 1149c60..0b9df83 100644
--- a/virt/kvm/ioapic.c
+++ b/virt/kvm/ioapic.c
@@ -152,7 +152,7 @@
update_handled_vectors(ioapic);
mask_after = e->fields.mask;
if (mask_before != mask_after)
- kvm_fire_mask_notifiers(ioapic->kvm, index, mask_after);
+ kvm_fire_mask_notifiers(ioapic->kvm, KVM_IRQCHIP_IOAPIC, index, mask_after);
if (e->fields.trig_mode == IOAPIC_LEVEL_TRIG
&& ioapic->irr & (1 << index))
ioapic_service(ioapic, index);
diff --git a/virt/kvm/irq_comm.c b/virt/kvm/irq_comm.c
index 06cf61e..369e380 100644
--- a/virt/kvm/irq_comm.c
+++ b/virt/kvm/irq_comm.c
@@ -279,15 +279,19 @@
synchronize_rcu();
}
-void kvm_fire_mask_notifiers(struct kvm *kvm, int irq, bool mask)
+void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin,
+ bool mask)
{
struct kvm_irq_mask_notifier *kimn;
struct hlist_node *n;
+ int gsi;
rcu_read_lock();
- hlist_for_each_entry_rcu(kimn, n, &kvm->mask_notifier_list, link)
- if (kimn->irq == irq)
- kimn->func(kimn, mask);
+ gsi = rcu_dereference(kvm->irq_routing)->chip[irqchip][pin];
+ if (gsi != -1)
+ hlist_for_each_entry_rcu(kimn, n, &kvm->mask_notifier_list, link)
+ if (kimn->irq == gsi)
+ kimn->func(kimn, mask);
rcu_read_unlock();
}