linux-kernel - Re: [PATCH v3 1/3] firmware: Add boot information to sysfs

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Message-ID: <CAK8P3a0G_xNQ6b2e71VXPVi+-j5L--SU37gFErwGYuh1QPrr1A@mail.gmail.com>
Date:   Fri, 22 Apr 2022 11:05:46 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Joel Stanley <joel@....id.au>, Arnd Bergmann <arnd@...db.de>,
        Andrew Jeffery <andrew@...id.au>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        linux-aspeed <linux-aspeed@...ts.ozlabs.org>
Subject: Re: [PATCH v3 1/3] firmware: Add boot information to sysfs

On Fri, Apr 22, 2022 at 8:46 AM Greg Kroah-Hartman
<gregkh@...uxfoundation.org> wrote:
> On Fri, Feb 04, 2022 at 05:52:32PM +1030, Joel Stanley wrote:
> > +What:                /sys/firmware/bootinfo/*
> > +Date:                Jan 2022
>
> It isn't January anymore :)

The patch was sent on Feb 4, I would expect that to be close enough. Does this
need to be the month of the kernel release it is merged into instead?

> > +Description:
> > +             A system can expose information about how it was started in
> > +             this directory.
>
> I do not understand what you mean by "how it was started".
>
> > +             This information is agnostic as to the firmware implementation.
>
> How?  This should be very firmware specific.

The original patch was specific to a particular SoC vendor. Since the
information provided here is fairly generic in the end, I asked for
the interface
to be generalized to the point that it can be reused across multiple
vendors and architectures.

      Arnd