linux-kernel - Re: [PATCH v2 0/5] elf: Define note name macros

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Message-ID: <Z3v1clew2t+XH5F5@e133380.arm.com>
Date: Mon, 6 Jan 2025 15:23:30 +0000
From: Dave Martin <Dave.Martin@....com>
To: Akihiko Odaki <akihiko.odaki@...nix.com>
Cc: Eric Biederman <ebiederm@...ssion.com>, Kees Cook <kees@...nel.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Mark Brown <broonie@...nel.org>, Baoquan He <bhe@...hat.com>,
	Vivek Goyal <vgoyal@...hat.com>, Dave Young <dyoung@...hat.com>,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org, linux-s390@...r.kernel.org,
	kexec@...ts.infradead.org, devel@...nix.com
Subject: Re: [PATCH v2 0/5] elf: Define note name macros

Hi,

On Sat, Jan 04, 2025 at 11:38:33PM +0900, Akihiko Odaki wrote:
> elf.h had a comment saying:
> > Notes used in ET_CORE. Architectures export some of the arch register
> > sets using the corresponding note types via the PTRACE_GETREGSET and
> > PTRACE_SETREGSET requests.
> > The note name for these types is "LINUX", except NT_PRFPREG that is
> > named "CORE".
> 
> However, NT_PRSTATUS is also named "CORE". It is also unclear what
> "these types" refers to.
> 
> To fix these problems, define a name for each note type. The added
> definitions are macros so the kernel and userspace can directly refer to
> them.
> 
> Signed-off-by: Akihiko Odaki <akihiko.odaki@...nix.com>

Should this be Cc'd at least to the GNU binutils or gdb folks?
Also the glibc and elfutils projects, both of which maintain a version
of elf.h.  They may have their own view on the best way to approach
this issue.

If cross-posting to other project mailing lists, it might make sense to
add a bit more background explaining the motivation for the change.

[...]

Cheers
---Dave