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kvm: add KVM_IRQFD_FLAG_RESAMPLE support

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Added an EventNotifier* parameter to
kvm-all.c:kvm_irqchip_add_irqfd_notifier(), in order to give KVM
another eventfd to be used as "resamplefd". See the documentation
in the linux kernel sources in Documentation/virtual/kvm/api.txt
(section 4.75) for more details.
When the added parameter is passed NULL, the behaviour of the
function is unchanged with respect to the previous versions.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Vincenzo Maffione <v.maffione@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Vincenzo Maffione 2013-07-22 11:51:33 +02:00 • committed by Paolo Bonzini
parent 0d89436786
commit ca916d3729
4 changed files with 18 additions and 8 deletions
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2
hw/virtio/virtio-pci.c
View file

@ -508,7 +508,7 @@ static int kvm_virtio_pci_irqfd_use(VirtIOPCIProxy *proxy,
VirtQueue *vq = virtio_get_queue(proxy->vdev, queue_no);
EventNotifier *n = virtio_queue_get_guest_notifier(vq);
int ret;
ret = kvm_irqchip_add_irqfd_notifier(kvm_state, n, irqfd->virq);
ret = kvm_irqchip_add_irqfd_notifier(kvm_state, n, NULL, irqfd->virq);
return ret;
}