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virtio-pci: support queue enable

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PCI devices support device specific vq enable.

Based on this function, the driver can re-enable the virtqueue after the
virtqueue is reset.

Signed-off-by: Kangjie Xu <kangjie.xu@linux.alibaba.com>
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20221017092558.111082-7-xuanzhuo@linux.alibaba.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Kangjie Xu 2022-10-17 17:25:49 +08:00 committed by Michael S. Tsirkin
parent 805d782d28
commit d1060e3dc5
1 changed files with 1 additions and 0 deletions
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1
hw/virtio/virtio-pci.c
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@ -1342,6 +1342,7 @@ static void virtio_pci_common_write(void *opaque, hwaddr addr,
proxy->vqs[vdev->queue_sel].used[0]);
proxy->vqs[vdev->queue_sel].enabled = 1;
proxy->vqs[vdev->queue_sel].reset = 0;
virtio_queue_enable(vdev, vdev->queue_sel);
} else {
virtio_error(vdev, "wrong value for queue_enable %"PRIx64, val);
}