Hi Wei, On 10/11/18 4:08 PM, w...@redhat.com wrote:
From: Wei Xu <w...@redhat.com>(cherry picked from commit 305a2c4640c15c5717245067ab937fd10f478ee6) Signed-off-by: Wei Xu <w...@redhat.com> (cherry picked from commit 46476dae6f44c6fef8802a4a0ac7d0d79fe399e3) Signed-off-by: Wei Xu <w...@redhat.com> --- hw/virtio/vhost.c | 3 +++ hw/virtio/virtio.c | 4 ++++ include/hw/virtio/virtio.h | 1 + 3 files changed, 8 insertions(+) diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 9df2da3..de06d55 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -974,6 +974,9 @@ static int vhost_virtqueue_start(struct vhost_dev *dev, }state.num = virtio_queue_get_last_avail_idx(vdev, idx);+ if (virtio_vdev_has_feature(vdev, VIRTIO_F_RING_PACKED)) { + state.num |= ((int)virtio_queue_packed_get_wc(vdev, idx)) << 31;
For next version, please note that we agreed to move the wrap counter value at bit 15. DPDK vhost lib implemented it that way.
