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>
diff --git a/arch/x86/kvm/i8259.c b/arch/x86/kvm/i8259.c
index 179dcb0..9316037 100644
--- a/arch/x86/kvm/i8259.c
+++ b/arch/x86/kvm/i8259.c
@@ -49,7 +49,8 @@
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 @@
}
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 82579ee..9f59318 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;