linux-kernel - Re: [PATCH v2 0/2] ARM: decompressor: support AUTO

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: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAD++jLkgtgi1obmiuon=1XhOmT5cwtsMmBE37-wkzE_W55ZV2Q@mail.gmail.com>
Date: Wed, 4 Feb 2026 01:36:29 +0100
From: Linus Walleij <linusw@...nel.org>
To: Marc Zyngier <maz@...nel.org>
Cc: "Christian Marangi (Ansuel)" <ansuelsmth@...il.com>, "Russell King (Oracle)" <linux@...linux.org.uk>, 
	Geert Uytterhoeven <geert@...ux-m68k.org>, Linus Walleij <linus.walleij@...aro.org>, 
	Arnd Bergmann <arnd@...db.de>, Andrew Morton <akpm@...ux-foundation.org>, 
	Geert Uytterhoeven <geert+renesas@...der.be>, 
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>, Thomas Gleixner <tglx@...utronix.de>, 
	Jonathan Corbet <corbet@....net>, "Mike Rapoport (IBM)" <rppt@...nel.org>, 
	Eric DeVolder <eric.devolder@...cle.com>, Nathan Chancellor <nathan@...nel.org>, 
	Kees Cook <keescook@...omium.org>, linux-arm-kernel@...ts.infradead.org, 
	linux-kernel@...r.kernel.org, Bjorn Andersson <andersson@...nel.org>, 
	Konrad Dybcio <konrad.dybcio@...ainline.org>, John Crispin <john@...ozen.org>
Subject: Re: [PATCH v2 0/2] ARM: decompressor: support AUTO_ZRELADDR and
 appended DTB

On Mon, Feb 2, 2026 at 12:11 PM Marc Zyngier <maz@...nel.org> wrote:

> If you can boot the kernel, you can also boot a secondary bootloader
> that will do the right thing by exposing a DT. Fixing the boot flow
> should be the priority, rather than adding more band-aids to the
> kernel.

I have used this approach with some Broadcom machines equipped
with the CFE thing they are using. I have that boot U-Boot and
U-boot boots the kernel. Works fine.

However, I think it is a thick requirement to put on hobbyist
contributors to go and write entite boot loaders from scratch,
I think it's a fine requirement to put on Qualcomm or Renesas
paid maintainers.

Another reason would be that appended DTB is in the same
league as the GPIO sysfs despite we GPIO maintainers hate it:
a feature users highly desire because it's easy and convenient
and practical and quick and thus refuse to let us drop. Every time
we try to deprecate it more we get a good beating.

Yours,
Linus Walleij