On 2/1/2018 2:47 PM, Yuanhan Liu wrote:
> On Wed, Jan 31, 2018 at 05:48:28PM +0000, Stefan Hajnoczi wrote:
>> The vhost_scsi example application negotiates the
>> VIRTIO_RING_F_EVENT_IDX feature bit but does not honor it when accessing
>> vrings.
>>
>> In particular, commit e37ff954405addb8ea422426a2d162d00dcad196 ("vhost:
>> support virtqueue interrupt/notification suppression") broke vring call
>> because vq->last_used_idx is never updated by vhost_scsi. The
>> vq->last_used_idx field is not even available via the librte_vhost
>> public API, so VIRTIO_RING_F_EVENT_IDX is currently only usable by the
>> built-in virtio_net.c driver in librte_vhost.
>>
>> This patch drops VIRTIO_RING_F_EVENT_IDX from vhost_scsi so that vring
>> call works again.
>>
>> Cc: Changpeng Liu <changpeng....@intel.com>
>> Cc: Junjie Chen <junjie.j.c...@intel.com>
>> Signed-off-by: Stefan Hajnoczi <stefa...@redhat.com>
>
> Acked-by: Yuanhan Liu <y...@fridaylinux.org>
Applied to dpdk-next-net/master, thanks.
