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virtio: move common irqfd handling out of virtio-pci

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All transports can use the same event handler for the irqfd, though the
exact mechanics of the assignment will be specific.  Note that there
are three states: handled by the kernel, handled in userspace, disabled.

This also lets virtio use event_notifier_set_handler.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Paolo Bonzini 2012-07-05 17:16:30 +02:00 • committed by Avi Kivity
parent b1f416aa8d
commit 15b2bd1847
6 changed files with 58 additions and 27 deletions
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10
kvm-all.c
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@ -1163,11 +1163,21 @@ int kvm_irqchip_add_irqfd(KVMState *s, int fd, int virq)
return kvm_irqchip_assign_irqfd(s, fd, virq, true);
}
int kvm_irqchip_add_irq_notifier(KVMState *s, EventNotifier *n, int virq)
{
return kvm_irqchip_add_irqfd(s, event_notifier_get_fd(n), virq);
}
int kvm_irqchip_remove_irqfd(KVMState *s, int fd, int virq)
{
return kvm_irqchip_assign_irqfd(s, fd, virq, false);
}
int kvm_irqchip_remove_irq_notifier(KVMState *s, EventNotifier *n, int virq)
{
return kvm_irqchip_remove_irqfd(s, event_notifier_get_fd(n), virq);
}
static int kvm_irqchip_create(KVMState *s)
{
QemuOptsList *list = qemu_find_opts("machine");