Re: [PATCH v4] virtio-net: Ignore num_buffers when unused

On Mon, May 26, 2025 at 1:15 PM Akihiko Odaki <[email protected]> wrote:
>
> If VIRTIO_NET_F_MRG_RXBUF has not been negotiated, vhost_net of Linux
> prior to 6.14 and QEMU prior to 10.0.0 leave num_buffers uninitialized
> while the specification tells to set it to one.
>
> Let drivers ignore this field to make them compatible with old
> vhost_net/QEMU, similar to the hdr_len field, which is also marked as
> unreliable due to implementation bugs.
>
> Signed-off-by: Akihiko Odaki <[email protected]>
> Reviewed-by: Parav Pandit <[email protected]>
> ---

Reviewed-by: Jason Wang <[email protected]>

Thanks