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Subject: Re: [RFC v4 5/5] virtio_ring: enable packed ring
To:     Tiwei Bie <tiwei.bie@intel.com>, mst@redhat.com,
        jasowang@redhat.com, virtualization@lists.linux-foundation.org,
        linux-kernel@vger.kernel.org, netdev@vger.kernel.org
Cc:     wexu@redhat.com, jfreimann@redhat.com
References: <20180516083737.26504-1-tiwei.bie@intel.com>
 <20180516083737.26504-6-tiwei.bie@intel.com>
From:   Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Message-ID: <27dfb4e8-6d63-bf7d-0f97-ac51559f8040@cogentembedded.com>
Date:   Wed, 16 May 2018 13:15:48 +0300
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On 5/16/2018 11:37 AM, Tiwei Bie wrote:

> Signed-off-by: Tiwei Bie <tiwei.bie@intel.com>
> ---
>   drivers/virtio/virtio_ring.c | 2 ++
>   1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
> index de3839f3621a..b158692263b0 100644
> --- a/drivers/virtio/virtio_ring.c
> +++ b/drivers/virtio/virtio_ring.c
> @@ -1940,6 +1940,8 @@ void vring_transport_features(struct virtio_device *vdev)
>   			break;
>   		case VIRTIO_F_IOMMU_PLATFORM:
>   			break;
> +		case VIRTIO_F_RING_PACKED:
> +			break;

    Why not just add this *case* under the previous *case*?

>    		default:
>   			/* We don't understand this bit. */
>   			__virtio_clear_bit(vdev, i);

MBR, Sergei