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KVM: Add irq ack notifier list

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This can be used by kvm subsystems that are interested in when
interrupts are acked, for example time drift compensation.

Signed-off-by: Avi Kivity <avi@qumranet.com>
This commit is contained in:
Avi Kivity
2008-07-26 17:00:59 -03:00
parent 49dd2c4928
commit 564f15378f
3 changed files with 34 additions and 0 deletions
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22
arch/x86/kvm/irq.c
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@@ -111,3 +111,25 @@ void kvm_set_irq(struct kvm *kvm, int irq, int level)
kvm_ioapic_set_irq(kvm->arch.vioapic, irq, level);
kvm_pic_set_irq(pic_irqchip(kvm), irq, level);
}
void kvm_notify_acked_irq(struct kvm *kvm, unsigned gsi)
{
struct kvm_irq_ack_notifier *kian;
struct hlist_node *n;
hlist_for_each_entry(kian, n, &kvm->arch.irq_ack_notifier_list, link)
if (kian->gsi == gsi)
kian->irq_acked(kian);
}
void kvm_register_irq_ack_notifier(struct kvm *kvm,
struct kvm_irq_ack_notifier *kian)
{
hlist_add_head(&kian->link, &kvm->arch.irq_ack_notifier_list);
}
void kvm_unregister_irq_ack_notifier(struct kvm *kvm,
struct kvm_irq_ack_notifier *kian)
{
hlist_del(&kian->link);
}