KVM: make irq ack notifications aware of routing table

IRQ ack notifications assume an identity mapping between pin->gsi,
which might not be the case with, for example, HPET.

Translate before acking.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Acked-by: Gleb Natapov <gleb@redhat.com>

2 files changed, 5 insertions, 2 deletions

diff --git a/arch/x86/kvm/i8259.c b/arch/x86/kvm/i8259.c
index 179dcb0103fd..93160375c841 100644
--- a/arch/x86/kvm/i8259.c
+++ b/arch/x86/kvm/i8259.c
@@ -49,7 +49,8 @@ static void pic_unlock(struct kvm_pic *s)
         spin_unlock(&s->lock);
 
         while (acks) {
-                kvm_notify_acked_irq(kvm, __ffs(acks));
+                kvm_notify_acked_irq(kvm, SELECT_PIC(__ffs(acks)),
+                                     __ffs(acks));
                 acks &= acks - 1;
         }
 
@@ -232,7 +233,7 @@ int kvm_pic_read_irq(struct kvm *kvm)
         }
         pic_update_irq(s);
         pic_unlock(s);
-        kvm_notify_acked_irq(kvm, irq);
+        kvm_notify_acked_irq(kvm, SELECT_PIC(irq), irq);
 
         return intno;
 }
diff --git a/arch/x86/kvm/irq.h b/arch/x86/kvm/irq.h
index 82579ee538d0..9f593188129e 100644
--- a/arch/x86/kvm/irq.h
+++ b/arch/x86/kvm/irq.h
@@ -32,6 +32,8 @@
 #include "lapic.h"
 
 #define PIC_NUM_PINS 16
+#define SELECT_PIC(irq) \
+        ((irq) < 8 ? KVM_IRQCHIP_PIC_MASTER : KVM_IRQCHIP_PIC_SLAVE)
 
 struct kvm;
 struct kvm_vcpu;