virtio-pci: fix level interrupts
mask notifiers are never called without msix, so devices with backend masking like vhost don't work. Call mask notifiers explicitly at startup/cleanup to make it work. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Tested-by: Alexander Graf <agraf@suse.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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@ -744,6 +744,7 @@ static int virtio_pci_set_guest_notifier(DeviceState *d, int n, bool assign,
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bool with_irqfd)
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{
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VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
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VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(proxy->vdev);
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VirtQueue *vq = virtio_get_queue(proxy->vdev, n);
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EventNotifier *notifier = virtio_queue_get_guest_notifier(vq);
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@ -758,6 +759,10 @@ static int virtio_pci_set_guest_notifier(DeviceState *d, int n, bool assign,
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event_notifier_cleanup(notifier);
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}
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if (!msix_enabled(&proxy->pci_dev) && vdc->guest_notifier_mask) {
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vdc->guest_notifier_mask(proxy->vdev, n, !assign);
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}
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return 0;
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}
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