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 8055067..c13cc48 100644 (file)
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -447,7 +447,8 @@ void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq,
                                    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 (file)
--- a/virt/kvm/ioapic.c
+++ b/virt/kvm/ioapic.c
@@ -152,7 +152,7 @@ static void ioapic_write_indirect(struct kvm_ioapic *ioapic, u32 val)
                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 (file)
--- a/virt/kvm/irq_comm.c
+++ b/virt/kvm/irq_comm.c
@@ -279,15 +279,19 @@ void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq,
        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();
 }