diff options
| author | Denis Plotnikov <dplotnikov@virtuozzo.com> | 2019-12-24 11:14:46 +0300 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2020-01-06 12:04:51 -0500 |
| commit | 1049f4c62c4070618cc5defc9963c6a17ae7a5ae (patch) | |
| tree | 1dc60ed2cff8dcbc4a009a53f5ef0415fb33b26c /hw/virtio | |
| parent | cec0242ab49d179c811d58b8c9c13d4e22e0e9c8 (diff) | |
virtio-mmio: update queue size on guest write
Some guests read back queue size after writing it.
Always update the on size write otherwise they might be confused.
Cc: qemu-stable@nongnu.org
Signed-off-by: Denis Plotnikov <dplotnikov@virtuozzo.com>
Message-Id: <20191224081446.17003-1-dplotnikov@virtuozzo.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/virtio')
| -rw-r--r-- | hw/virtio/virtio-mmio.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/hw/virtio/virtio-mmio.c b/hw/virtio/virtio-mmio.c index ef40b7a9b2..872f2cd237 100644 --- a/hw/virtio/virtio-mmio.c +++ b/hw/virtio/virtio-mmio.c @@ -308,8 +308,9 @@ static void virtio_mmio_write(void *opaque, hwaddr offset, uint64_t value, break; case VIRTIO_MMIO_QUEUE_NUM: trace_virtio_mmio_queue_write(value, VIRTQUEUE_MAX_SIZE); + virtio_queue_set_num(vdev, vdev->queue_sel, value); + if (proxy->legacy) { - virtio_queue_set_num(vdev, vdev->queue_sel, value); virtio_queue_update_rings(vdev, vdev->queue_sel); } else { proxy->vqs[vdev->queue_sel].num = value; |