qemu: init all queues to NO_VECTOR value
initialize vectors for all vqs to VIRTIO_NO_VECTOR rather than 0 which is a valid vector. This fixes migration which happened before driver was loaded. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reported-by: Amit Shah <amit.shah@redhat.com> Tested-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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				| @ -694,6 +694,7 @@ VirtIODevice *virtio_common_init(const char *name, uint16_t device_id, | ||||
|                                  size_t config_size, size_t struct_size) | ||||
| { | ||||
|     VirtIODevice *vdev; | ||||
|     int i; | ||||
| 
 | ||||
|     vdev = qemu_mallocz(struct_size); | ||||
| 
 | ||||
| @ -703,6 +704,8 @@ VirtIODevice *virtio_common_init(const char *name, uint16_t device_id, | ||||
|     vdev->queue_sel = 0; | ||||
|     vdev->config_vector = VIRTIO_NO_VECTOR; | ||||
|     vdev->vq = qemu_mallocz(sizeof(VirtQueue) * VIRTIO_PCI_QUEUE_MAX); | ||||
|     for(i = 0; i < VIRTIO_PCI_QUEUE_MAX; i++) | ||||
|         vdev->vq[i].vector = VIRTIO_NO_VECTOR; | ||||
| 
 | ||||
|     vdev->name = name; | ||||
|     vdev->config_len = config_size; | ||||
|  | ||||
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