On 06/28/2018 11:52 PM, Marvin Liu wrote:
If devices always use descriptors in the same order in which they have been made available. These devices can offer the VIRTIO_F_IN_ORDER feature. If negotiated, this knowledge allows devices to notify the use of a batch of buffers to virtio driver by only writing used ring index. Vhost user device has supported this feature by default. If vhost dequeue zero is enabled, should disable VIRTIO_F_IN_ORDER as vhost can’t assure that descriptors returned from NIC are in order. Signed-off-by: Marvin Liu <yong....@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coque...@redhat.com> Thanks, Maxime
