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authorMarcelo Tosatti <mtosatti@redhat.com>2009-01-27 15:12:38 -0200
committerAvi Kivity <avi@redhat.com>2009-03-24 11:03:08 +0200
commit44882eed2ebe7f75f8cdae5671ab1d6e0fa40dbc (patch)
treee026a4067370e2dac1a5a3a9d9995e2b6f82ba49 /arch/x86
parent934d534f8a5a39e20d5682b3a3a45ff351706b59 (diff)
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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>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/kvm/i8259.c5
-rw-r--r--arch/x86/kvm/irq.h2
2 files changed, 5 insertions, 2 deletions
diff --git a/arch/x86/kvm/i8259.c b/arch/x86/kvm/i8259.c
index 179dcb0103f..93160375c84 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 82579ee538d..9f593188129 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;