linux-kernel - Re: [PATCH] virtio_blk: mark all zone fields LE

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Date:   Fri, 23 Dec 2022 14:28:10 +0800
From:   Jason Wang <jasowang@...hat.com>
To:     "Michael S. Tsirkin" <mst@...hat.com>
Cc:     linux-kernel@...r.kernel.org, Paolo Bonzini <pbonzini@...hat.com>,
        Stefan Hajnoczi <stefanha@...hat.com>,
        virtualization@...ts.linux-foundation.org
Subject: Re: [PATCH] virtio_blk: mark all zone fields LE

On Fri, Dec 23, 2022 at 3:32 AM Michael S. Tsirkin <mst@...hat.com> wrote:
>
> zone is a virtio 1.x feature so all fields are LE,
> they are handled as such, but have mistakenly been labeled
> __virtioXX in the header.  This results in a bunch of sparse warnings.
>
> Use the __leXX tags to make sparse happy.
>
> Signed-off-by: Michael S. Tsirkin <mst@...hat.com>

Acked-by: Jason Wang <jasowang@...hat.com>

Thanks

> ---
>  include/uapi/linux/virtio_blk.h | 18 +++++++++---------
>  1 file changed, 9 insertions(+), 9 deletions(-)
>
> diff --git a/include/uapi/linux/virtio_blk.h b/include/uapi/linux/virtio_blk.h
> index f4d5ee7c6f30..ec3c3779406f 100644
> --- a/include/uapi/linux/virtio_blk.h
> +++ b/include/uapi/linux/virtio_blk.h
> @@ -141,11 +141,11 @@ struct virtio_blk_config {
>
>         /* Zoned block device characteristics (if VIRTIO_BLK_F_ZONED) */
>         struct virtio_blk_zoned_characteristics {
> -               __virtio32 zone_sectors;
> -               __virtio32 max_open_zones;
> -               __virtio32 max_active_zones;
> -               __virtio32 max_append_sectors;
> -               __virtio32 write_granularity;
> +               __le32 zone_sectors;
> +               __le32 max_open_zones;
> +               __le32 max_active_zones;
> +               __le32 max_append_sectors;
> +               __le32 write_granularity;
>                 __u8 model;
>                 __u8 unused2[3];
>         } zoned;
> @@ -245,11 +245,11 @@ struct virtio_blk_outhdr {
>   */
>  struct virtio_blk_zone_descriptor {
>         /* Zone capacity */
> -       __virtio64 z_cap;
> +       __le64 z_cap;
>         /* The starting sector of the zone */
> -       __virtio64 z_start;
> +       __le64 z_start;
>         /* Zone write pointer position in sectors */
> -       __virtio64 z_wp;
> +       __le64 z_wp;
>         /* Zone type */
>         __u8 z_type;
>         /* Zone state */
> @@ -258,7 +258,7 @@ struct virtio_blk_zone_descriptor {
>  };
>
>  struct virtio_blk_zone_report {
> -       __virtio64 nr_zones;
> +       __le64 nr_zones;
>         __u8 reserved[56];
>         struct virtio_blk_zone_descriptor zones[];
>  };
> --
> MST
>