linux-kernel - Re: [virtio-dev] [PATCH] virtio: update the comments for transport features

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Date:   Fri, 1 Jun 2018 12:45:52 +0200
From:   Cornelia Huck <cohuck@...hat.com>
To:     Tiwei Bie <tiwei.bie@...el.com>
Cc:     mst@...hat.com, jasowang@...hat.com, stefanha@...hat.com,
        virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org, virtio-dev@...ts.oasis-open.org
Subject: Re: [virtio-dev] [PATCH] virtio: update the comments for transport
 features

On Fri,  1 Jun 2018 18:22:17 +0800
Tiwei Bie <tiwei.bie@...el.com> wrote:

> Suggested-by: Michael S. Tsirkin <mst@...hat.com>
> Signed-off-by: Tiwei Bie <tiwei.bie@...el.com>
> ---
> This patch is generated on top of below patch:
> https://lists.oasis-open.org/archives/virtio-dev/201805/msg00212.html
> 
>  include/uapi/linux/virtio_config.h | 9 ++++++---
>  1 file changed, 6 insertions(+), 3 deletions(-)
> 
> diff --git a/include/uapi/linux/virtio_config.h b/include/uapi/linux/virtio_config.h
> index b7c1f4e7d59e..479affd903e9 100644
> --- a/include/uapi/linux/virtio_config.h
> +++ b/include/uapi/linux/virtio_config.h
> @@ -45,9 +45,12 @@
>  /* We've given up on this device. */
>  #define VIRTIO_CONFIG_S_FAILED		0x80
>  
> -/* Some virtio feature bits (currently bits 28 through 32) are reserved for the
> - * transport being used (eg. virtio_ring), the rest are per-device feature
> - * bits. */
> +/*
> + * Some virtio feature bits (currently bits VIRTIO_TRANSPORT_F_START
> + * through VIRTIO_TRANSPORT_F_END) are reserved for the transport being

It will always be bits up to VIRTIO_TRANSPORT_F_END, no? So you can drop
the "currently"?

Or reword as "Virtio feature bits VIRTIO_TRANSPORT_F_START through
VIRTIO_TRANSPORT_F_END are reserved..."?

> + * used (e.g. virtio_ring, virtio_pci etc.), the rest are per-device
> + * feature bits.
> + */
>  #define VIRTIO_TRANSPORT_F_START	28
>  #define VIRTIO_TRANSPORT_F_END		38
>