linux-kernel - Re: [PATCH v4 05/17] module: Switch load_info::len to size

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Message-ID: <8fd4914d-5cff-4030-822c-98c8e76d0e60@t-8ch.de>
Date: Fri, 6 Feb 2026 09:38:07 +0100
From: Thomas Weißschuh <linux@...ssschuh.net>
To: Nicolas Schier <nsc@...nel.org>, Nathan Chancellor <nathan@...nel.org>, 
	Arnd Bergmann <arnd@...db.de>, Luis Chamberlain <mcgrof@...nel.org>, 
	Petr Pavlu <petr.pavlu@...e.com>, Sami Tolvanen <samitolvanen@...gle.com>, 
	Daniel Gomez <da.gomez@...sung.com>, Paul Moore <paul@...l-moore.com>, 
	James Morris <jmorris@...ei.org>, "Serge E. Hallyn" <serge@...lyn.com>, 
	Jonathan Corbet <corbet@....net>, Madhavan Srinivasan <maddy@...ux.ibm.com>, 
	Michael Ellerman <mpe@...erman.id.au>, Nicholas Piggin <npiggin@...il.com>, 
	Naveen N Rao <naveen@...nel.org>, Mimi Zohar <zohar@...ux.ibm.com>, 
	Roberto Sassu <roberto.sassu@...wei.com>, Dmitry Kasatkin <dmitry.kasatkin@...il.com>, 
	Eric Snowberg <eric.snowberg@...cle.com>, Daniel Gomez <da.gomez@...nel.org>, 
	Aaron Tomlin <atomlin@...mlin.com>, "Christophe Leroy (CS GROUP)" <chleroy@...nel.org>, 
	Nicolas Bouchinet <nicolas.bouchinet@....cyber.gouv.fr>, Xiu Jianfeng <xiujianfeng@...wei.com>, 
	Fabian Grünbichler <f.gruenbichler@...xmox.com>, Arnout Engelen <arnout@...t.net>, 
	Mattia Rizzolo <mattia@...reri.org>, kpcyrd <kpcyrd@...hlinux.org>, 
	Christian Heusel <christian@...sel.eu>, Câju Mihai-Drosi <mcaju95@...il.com>, 
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>, linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-arch@...r.kernel.org, linux-modules@...r.kernel.org, 
	linux-security-module@...r.kernel.org, linux-doc@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org, 
	linux-integrity@...r.kernel.org
Subject: Re: [PATCH v4 05/17] module: Switch load_info::len to size_t

On 2026-02-06 09:30:08+0100, Nicolas Schier wrote:
> On Tue, Jan 13, 2026 at 01:28:49PM +0100, Thomas Weißschuh wrote:
> > Switching the types will make some later changes cleaner.
> > size_t is also the semantically correct type for this field.
> > 
> > As both 'size_t' and 'unsigned int' are always the same size, this
> > should be risk-free.
> 
> include/uapi/asm-generic/posix_types.h states:
> | * Most 32 bit architectures use "unsigned int" size_t,
> | * and all 64 bit architectures use "unsigned long" size_t.
> 
> Is that statement wrong?  Or did I mix up the context?

That statement is correct. But as both 'unsigned int' and 'unsigned
long' are 32-bit wide on 32-bit Linux platforms they are compatible.


Thomas