linux-hardening - Re: [PATCH v7 0/8] soc/tegra: fuse: Add ACPI support

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Message-Id: <d84156ff-897c-440a-bafa-75933203a3f1@app.fastmail.com>
Date: Thu, 14 Dec 2023 18:43:47 +0000
From: "Arnd Bergmann" <arnd@...db.de>
To: "Thierry Reding" <thierry.reding@...il.com>, Kartik <kkartik@...dia.com>
Cc: "Jon Hunter" <jonathanh@...dia.com>, "Kees Cook" <keescook@...omium.org>,
 "Andy Shevchenko" <andy@...nel.org>,
 "Andrew Morton" <akpm@...ux-foundation.org>,
 "Ulf Hansson" <ulf.hansson@...aro.org>,
 "Linus Walleij" <linus.walleij@...aro.org>, pshete@...dia.com,
 petlozup@...dia.com, "Yangtao Li" <frank.li@...o.com>,
 "Rob Herring" <robh@...nel.org>, stefank@...dia.com, pdeschrijver@...dia.com,
 "Christophe JAILLET" <christophe.jaillet@...adoo.fr>,
 linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-hardening@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH v7 0/8] soc/tegra: fuse: Add ACPI support

On Thu, Dec 14, 2023, at 17:08, Thierry Reding wrote:
> On Tue, Oct 17, 2023 at 10:53:14AM +0530, Kartik wrote:
>> This series of patches add ACPI support for Tegra194 and Tegra234 in
>> Tegra fuse and apbmisc drivers. It also adds support for Tegra241
>> which uses ACPI boot.
>
> Applied, thanks.

I'm still a bit puzzled by this series, can you provide some more background?

Why does an ACPI based system require access to SoC drivers? Shouldn't
this all be abstracted by the BIOS in some form so the device drivers
can work standalone rather than calling into this driver?

      Arnd