linux-kernel - Re: [PATCH] firmware: export x86_64 platform flash bios region via sysfs

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Date:   Thu, 11 Nov 2021 21:07:42 +0000
From:   Richard Hughes <hughsient@...il.com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     Ard Biesheuvel <ardb@...nel.org>,
        Hans-Gert Dahmen <hans-gert.dahmen@...u.ne>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Mauro Lima <mauro.lima@...ypsium.com>,
        Greg KH <gregkh@...uxfoundation.org>,
        "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Philipp Deppenwiese <philipp.deppenwiese@...u.ne>,
        "platform-driver-x86@...r.kernel.org" 
        <platform-driver-x86@...r.kernel.org>
Subject: Re: [PATCH] firmware: export x86_64 platform flash bios region via sysfs

On Thu, 11 Nov 2021 at 15:50, Andy Shevchenko <andy.shevchenko@...il.com> wrote:
> I was thinking about SHA256 hashes or so (as they tell about
> binaries). In any case the interface for this seems to be in the
> kernel.

I'm quite sure you don't want to put those EFI format decoders in the
kernel; there is all kinds of weird compression schemes, volumes are
recursive, and vendors like to hide weird things in the undocumented
(or reserved) areas.

Richard.