linux-hardening - Re: KFENCE: included in x86 defconfig?

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Date: Wed, 7 Feb 2024 19:16:19 +0100
From: Borislav Petkov <bp@...en8.de>
To: Marco Elver <elver@...gle.com>
Cc: Matthieu Baerts <matttbe@...nel.org>,
	Alexander Potapenko <glider@...gle.com>,
	Dmitry Vyukov <dvyukov@...gle.com>, kasan-dev@...glegroups.com,
	Netdev <netdev@...r.kernel.org>, Jakub Kicinski <kuba@...nel.org>,
	linux-hardening@...r.kernel.org, Kees Cook <keescook@...omium.org>,
	the arch/x86 maintainers <x86@...nel.org>
Subject: Re: KFENCE: included in x86 defconfig?

On Wed, Feb 07, 2024 at 07:05:31PM +0100, Marco Elver wrote:
> I think this would belong into some "hardening" config - while KFENCE
> is not a mitigation (due to sampling) it has the performance
> characteristics of unintrusive hardening techniques, so I think it
> would be a good fit. I think that'd be
> "kernel/configs/hardening.config".

Instead of doing a special config for all the parties out there, why
don't parties simply automate their testing efforts by merging config
snippets into the default configs using

scripts/kconfig/merge_config.sh

before they run their specialized tests?

Thx.

-- 
Regards/Gruss,
    Boris.

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