[Qemu-devel] [PATCH for-1.5] virtio-pci: bugfix

[Michael S. Tsirkin]

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 <address@hidden>
Tested-by: Alexander Graf <address@hidden>

---
 hw/virtio/virtio-pci.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
index 8bba0f3..d0fcc6c 100644
--- a/hw/virtio/virtio-pci.c
+++ b/hw/virtio/virtio-pci.c
@@ -758,6 +758,10 @@ static int virtio_pci_set_guest_notifier(DeviceState *d, 
int n, bool assign,
         event_notifier_cleanup(notifier);
     }
 
+    if (!msix_enabled(&proxy->pci_dev) && proxy->vdev->guest_notifier_mask) {
+        proxy->vdev->guest_notifier_mask(proxy->vdev, n, !assign);
+    }
+
     return 0;
 }
 
-- 
MST