linux-kernel - Re: [PATCH 0/5] firmware: xilinx: Add xilinx specific sysfs interface

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Date:   Wed, 18 Dec 2019 14:45:55 +0000
From:   Sudeep Holla <sudeep.holla@....com>
To:     Jolly Shah <jolly.shah@...inx.com>
Cc:     ard.biesheuvel@...aro.org, mingo@...nel.org,
        gregkh@...uxfoundation.org, matt@...eblueprint.co.uk,
        hkallweit1@...il.com, keescook@...omium.org,
        dmitry.torokhov@...il.com, michal.simek@...inx.com,
        rajanv@...inx.com, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Sudeep Holla <sudeep.holla@....com>
Subject: Re: [PATCH 0/5] firmware: xilinx: Add xilinx specific sysfs interface

On Wed, Dec 04, 2019 at 03:29:14PM -0800, Jolly Shah wrote:
> This patch series adds xilinx specific sysfs interface for below
> purposes:
> - Register access
> - Set shutdown scope
> - Set boot health status bit

This series defeats the whole abstraction EEMI provides. By providing
direct register accesses, you are allowing user-space to do whatever it
wants. I had NACKed this idea before. Has anything changed ?

If you need it for testing firmware, better put them in debugfs which is
off on production builds.

--
Regards,
Sudeep