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KVM: make irq ack notifications aware of routing table

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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>
This commit is contained in:
Marcelo Tosatti 2009-01-27 15:12:38 -02:00 • committed by Avi Kivity
parent 934d534f8a
commit 44882eed2e
5 changed files with 21 additions and 11 deletions
Download patch file Download diff file Expand all files Collapse all files

13
virt/kvm/irq_comm.c
View file

@ -59,10 +59,19 @@ void kvm_set_irq(struct kvm *kvm, int irq_source_id, int irq, int level)
e->set(e, kvm, !!(*irq_state));
}
void kvm_notify_acked_irq(struct kvm *kvm, unsigned gsi)
void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin)
{
struct kvm_kernel_irq_routing_entry *e;
struct kvm_irq_ack_notifier *kian;
struct hlist_node *n;
unsigned gsi = pin;
list_for_each_entry(e, &kvm->irq_routing, link)
if (e->irqchip.irqchip == irqchip &&
e->irqchip.pin == pin) {
gsi = e->gsi;
break;
}
hlist_for_each_entry(kian, n, &kvm->arch.irq_ack_notifier_list, link)
if (kian->gsi == gsi)
@ -237,8 +246,6 @@ out:
#define ROUTING_ENTRY1(irq) IOAPIC_ROUTING_ENTRY(irq)
#ifdef CONFIG_X86
#define SELECT_PIC(irq) \
((irq) < 8 ? KVM_IRQCHIP_PIC_MASTER : KVM_IRQCHIP_PIC_SLAVE)
# define PIC_ROUTING_ENTRY(irq) \
{ .gsi = irq, .type = KVM_IRQ_ROUTING_IRQCHIP, \
.u.irqchip.irqchip = SELECT_PIC(irq), .u.irqchip.pin = (irq) % 8 }