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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>
This commit is contained in:
Michael S. Tsirkin 2013-05-07 15:49:58 +03:00 committed by Anthony Liguori
parent d551d220c9
commit 62c96360ae
1 changed files with 5 additions and 0 deletions
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5
hw/virtio/virtio-pci.c
View File

@ -744,6 +744,7 @@ static int virtio_pci_set_guest_notifier(DeviceState *d, int n, bool assign,
bool with_irqfd)
{
VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d);
VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(proxy->vdev);
VirtQueue *vq = virtio_get_queue(proxy->vdev, n);
EventNotifier *notifier = virtio_queue_get_guest_notifier(vq);
@ -758,6 +759,10 @@ static int virtio_pci_set_guest_notifier(DeviceState *d, int n, bool assign,
event_notifier_cleanup(notifier);
}
if (!msix_enabled(&proxy->pci_dev) && vdc->guest_notifier_mask) {
vdc->guest_notifier_mask(proxy->vdev, n, !assign);
}
return 0;
}