linux-kernel - Re: [PATCH 0/2] UIO support for dfl devices

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Message-ID: <3dcc1b4e-d0fd-0586-ea87-eada0c557bed@redhat.com>
Date:   Fri, 16 Oct 2020 09:40:03 -0700
From:   Tom Rix <trix@...hat.com>
To:     Xu Yilun <yilun.xu@...el.com>, mdf@...nel.org,
        linux-fpga@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     gregkh@...uxfoundation.org, lgoncalv@...hat.com, hao.wu@...el.com
Subject: Re: [PATCH 0/2] UIO support for dfl devices


On 10/15/20 11:02 PM, Xu Yilun wrote:
> This patchset supports some dfl device drivers written in userspace.
>
> The usage is like:
>
>  # echo dfl_dev.1 > /sys/bus/dfl/drivers/<kernel driver>/unbind
>  # echo dfl-uio-pdev > /sys/bus/dfl/devices/dfl_dev.1/driver_override
>  # echo dfl_dev.1 > /sys/bus/dfl/drivers_probe
>
>
> Xu Yilun (2):
>   fpga: dfl: add driver_override support
>   fpga: dfl: add the userspace I/O device support for DFL devices
>
>  Documentation/ABI/testing/sysfs-bus-dfl | 28 +++++++++--
>  drivers/fpga/Kconfig                    | 10 ++++
>  drivers/fpga/Makefile                   |  1 +
>  drivers/fpga/dfl-uio-pdev.c             | 83 +++++++++++++++++++++++++++++++++
>  drivers/fpga/dfl.c                      | 54 ++++++++++++++++++++-
>  include/linux/dfl.h                     |  2 +
>  6 files changed, 173 insertions(+), 5 deletions(-)
>  create mode 100644 drivers/fpga/dfl-uio-pdev.c

This is a neat new feature.

Should something be added to Documentation/fpga/dfl.rst ?

Overall, patchset looks good.

Tom