[PATCH v2 0/3] vhost_vdpa: better PACKED support

Michael S. Tsirkin
2023-04-25T06:08:50Z

On Mon, Apr 24, 2023 at 03:50:28PM -0700, Shannon Nelson
wrote:
> While testing our vDPA driver with QEMU we found that vhost_vdpa was
> missing some support for PACKED VQs.  Adding these helped us get further
> in our testing.  The first patch makes sure that the vhost_vdpa vqs are
> given the feature flags, as done in other vhost variants.  The second
> and third patches use the feature flags to properly format and pass
> set/get_vq requests.

This missed the merge window most likely, unless there's
a reason to send a second pull towards the end of it. We'll see.

> v1:
>  - included wrap counter in packing answers for VHOST_GET_VRING_BASE
>  - added comments to vhost_virtqueue fields last_avail_idx and
last_used_idx
>
> v0:
>
https://lists.linuxfoundation.org/pipermail/virtualization/2023-April/066253.html
>  - initial version
>
> Shannon Nelson (3):
>   vhost_vdpa: tell vqs about the negotiated
>   vhost: support PACKED when setting-getting vring_base
>   vhost_vdpa: support PACKED when setting-getting vring_base
>
>  drivers/vhost/vdpa.c  | 34 ++++++++++++++++++++++++++++++----
>  drivers/vhost/vhost.c | 18 +++++++++++++-----
>  drivers/vhost/vhost.h |  8 ++++++--
>  3 files changed, 49 insertions(+), 11 deletions(-)
>
> --
> 2.17.1