diff options
| author | Denis Plotnikov <dplotnikov@virtuozzo.com> | 2019-12-24 11:14:46 +0300 |
|---|---|---|
| committer | Michael Roth <mdroth@linux.vnet.ibm.com> | 2020-05-11 18:09:43 -0500 |
| commit | 0253531824d1a0ef39cba3da3bdb1bb161834fd4 (patch) | |
| tree | 01f68c44cd7d6620ed80519a9e92a2ebc8f75662 | |
| parent | 2f4affb7213ab0003bc2fa8f0d467399059106de (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>
(cherry picked from commit 1049f4c62c4070618cc5defc9963c6a17ae7a5ae)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
| -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 94d934c44b..1e40a74869 100644 --- a/hw/virtio/virtio-mmio.c +++ b/hw/virtio/virtio-mmio.c @@ -295,8 +295,9 @@ 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; |