Re: [PATCH v7 08/46] virtio: memory access APIs

[Cornelia Huck]

On Sun, 30 Nov 2014 17:09:50 +0200
"Michael S. Tsirkin" <mst@xxxxxxxxxx> wrote:

> virtio 1.0 makes all memory structures LE, so
> we need APIs to conditionally do a byteswap on BE
> architectures.
> 
> To make it easier to check code statically,
> add virtio specific types for multi-byte integers
> in memory.
> 
> Add low level wrappers that do a byteswap conditionally, these will be
> useful e.g. for vhost.  Add high level wrappers that
> query device endian-ness and act accordingly.
> 
> Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
> ---
>  include/linux/virtio_byteorder.h  | 59 +++++++++++++++++++++++++++++++++++++++
>  include/linux/virtio_config.h     | 32 +++++++++++++++++++++
>  include/uapi/linux/virtio_ring.h  | 45 ++++++++++++++---------------
>  include/uapi/linux/virtio_types.h | 46 ++++++++++++++++++++++++++++++
>  include/uapi/linux/Kbuild         |  1 +
>  5 files changed, 161 insertions(+), 22 deletions(-)
>  create mode 100644 include/linux/virtio_byteorder.h
>  create mode 100644 include/uapi/linux/virtio_types.h

Reviewed-by: Cornelia Huck <cornelia.huck@xxxxxxxxxx>

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