[PATCH v9 06/13] vdpa/ifc: add block device SW live-migration

[Xia, Chenbo]

> -----Original Message-----
> From: Pei, Andy <andy.pei at intel.com>
> Sent: Monday, May 23, 2022 5:35 PM
> To: dev at dpdk.org
> Cc: Xia, Chenbo <chenbo.xia at intel.com>; maxime.coquelin at redhat.com; Cao,
> Gang <gang.cao at intel.com>; Liu, Changpeng <changpeng.liu at intel.com>; Xu,
> Rosen <rosen.xu at intel.com>; Xiao, QimaiX <qimaix.xiao at intel.com>
> Subject: [PATCH v9 06/13] vdpa/ifc: add block device SW live-migration
> 
> Add SW live-migration support to block device.
> For block device, it is critical that no packet
> should be dropped. So when virtio blk device is
> paused, make sure hardware last_avail_idx and
> last_used_idx are the same. This indicates all
> requests have received acks, and no inflight IO.
> 
> Signed-off-by: Andy Pei <andy.pei at intel.com>
> ---
>  drivers/vdpa/ifc/base/ifcvf.h |  1 +
>  drivers/vdpa/ifc/ifcvf_vdpa.c | 42
> ++++++++++++++++++++++++++++++++++++++----
>  2 files changed, 39 insertions(+), 4 deletions(-)

Reviewed-by: Chenbo Xia <chenbo.xia at intel.com>