linux-kernel - Re: [PATCH v3 3/5] mdev: Expose mdev alias in sysfs tree

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Date:   Tue, 17 Sep 2019 12:08:52 +0200
From:   Cornelia Huck <cohuck@...hat.com>
To:     Parav Pandit <parav@...lanox.com>
Cc:     alex.williamson@...hat.com, jiri@...lanox.com,
        kwankhede@...dia.com, davem@...emloft.net, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH v3 3/5] mdev: Expose mdev alias in sysfs tree

On Sun,  1 Sep 2019 23:24:34 -0500
Parav Pandit <parav@...lanox.com> wrote:

> Expose the optional alias for an mdev device as a sysfs attribute.
> This way, userspace tools such as udev may make use of the alias, for
> example to create a netdevice name for the mdev.
> 
> Updated documentation for optional read only sysfs attribute.
> 
> Signed-off-by: Parav Pandit <parav@...lanox.com>
> 
> ---
> Changelog:
> v2->v3:
>  - Merged sysfs documentation patch with sysfs addition
>  - Added more description for alias return value
> v0->v1:
>  - Addressed comments from Cornelia Huck
>  - Updated commit description
> ---
>  Documentation/driver-api/vfio-mediated-device.rst |  9 +++++++++
>  drivers/vfio/mdev/mdev_sysfs.c                    | 13 +++++++++++++
>  2 files changed, 22 insertions(+)
> 

(...)

> @@ -281,6 +282,14 @@ Example::
>  
>  	# echo 1 > /sys/bus/mdev/devices/$mdev_UUID/remove
>  
> +* alias (read only, optional)
> +Whenever a parent requested to generate an alias, each mdev device of such

s/such/that/

> +parent is assigned unique alias by the mdev core.

s/unique alias/a unique alias/

> +This file shows the alias of the mdev device.
> +
> +Reading file either returns valid alias when assigned or returns error code

s/file/this file/
s/valid alias/a valid alias/
s/error code/the error code/

> +-EOPNOTSUPP when unsupported.
> +
>  Mediated device Hot plug
>  ------------------------

With the nits above fixed,
Reviewed-by: Cornelia Huck <cohuck@...hat.com>