linux-kernel - Re: [PATCH RFC v2 1/2] binfmt_elf: Wire up AT_HWCAP3 at AT

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Message-ID: <202410041721.0B633082@keescook>
Date: Fri, 4 Oct 2024 17:22:50 -0700
From: Kees Cook <kees@...nel.org>
To: Mark Brown <broonie@...nel.org>
Cc: Alexander Viro <viro@...iv.linux.org.uk>,
	Christian Brauner <brauner@...nel.org>, Jan Kara <jack@...e.cz>,
	Eric Biederman <ebiederm@...ssion.com>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>, Jonathan Corbet <corbet@....net>,
	linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	Yury Khrustalev <yury.khrustalev@....com>,
	Wilco Dijkstra <wilco.dijkstra@....com>,
	linux-arm-kernel@...ts.infradead.org, linux-doc@...r.kernel.org
Subject: Re: [PATCH RFC v2 1/2] binfmt_elf: Wire up AT_HWCAP3 at AT_HWCAP4

On Fri, Oct 04, 2024 at 09:26:29PM +0100, Mark Brown wrote:
> AT_HWCAP3 and AT_HWCAP4 were recently defined for use on PowerPC in commit
> 3281366a8e79 ("uapi/auxvec: Define AT_HWCAP3 and AT_HWCAP4 aux vector,
> entries"). Since we want to start using AT_HWCAP3 on arm64 add support for

(Side note: I wonder what auxvec 29 and 30 used to be?)

> exposing both these new hwcaps via binfmt_elf.

This seems fine to me, feel free to carry this via the arm64 tree.

Acked-by: Kees Cook <kees@...nel.org>

-- 
Kees Cook