linux-kernel - Re: [PATCH] elf: Fix the arm64 MTE ELF segment name and value

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Date:   Thu, 28 Apr 2022 14:50:27 +0100
From:   Will Deacon <will@...nel.org>
To:     Catalin Marinas <catalin.marinas@....com>
Cc:     kernel-team@...roid.com, Will Deacon <will@...nel.org>,
        Jonathan Corbet <corbet@....net>,
        Kees Cook <keescook@...omium.org>,
        Luis Machado <luis.machado@....com>,
        linux-kernel@...r.kernel.org,
        Richard Earnshaw <Richard.Earnshaw@....com>,
        Eric Biederman <ebiederm@...ssion.com>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] elf: Fix the arm64 MTE ELF segment name and value

On Mon, 25 Apr 2022 16:18:33 +0100, Catalin Marinas wrote:
> Unfortunately, the name/value choice for the MTE ELF segment type
> (PT_ARM_MEMTAG_MTE) was pretty poor: LOPROC+1 is already in use by
> PT_AARCH64_UNWIND, as defined in the AArch64 ELF ABI
> (https://github.com/ARM-software/abi-aa/blob/main/aaelf64/aaelf64.rst).
> 
> Update the ELF segment type value to LOPROC+2 and also change the define
> to PT_AARCH64_MEMTAG_MTE to match the AArch64 ELF ABI namespace. The
> AArch64 ELF ABI document is updating accordingly (segment type not
> previously mentioned in the document).
> 
> [...]

Applied to arm64 (for-next/fixes), thanks!

[1/1] elf: Fix the arm64 MTE ELF segment name and value
      https://git.kernel.org/arm64/c/c35fe2a68f29

Cheers,
-- 
Will

https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev