lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite for Android: free password hash cracker in your pocket
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Fri, 15 Dec 2023 17:43:39 +0100
From: Thierry Reding <thierry.reding@...il.com>
To: Kartik <kkartik@...dia.com>, Arnd Bergmann <arnd@...db.de>
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 06:43:47PM +0000, Arnd Bergmann wrote:
> 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?

This driver exposes a couple of things such as SoC family and SKU
information that is not otherwise available. It also exposes FUSE
data which can be used to calibrate certain devices. Most of the
region that contains the fuses is in the keep-out, so perhaps they
aren't needed on Tegra241.

I suppose things like SoC family and such could be exposed differently.
Not sure if ACPI has other ways to expose that.

Let's see if Kartik can shed some light on this.

Thierry

Download attachment "signature.asc" of type "application/pgp-signature" (834 bytes)

Powered by blists - more mailing lists