linux-kernel - Re: [PATCH v2] kconfig: Add transitional symbol attribute for migration support

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Message-ID: <202509010944.CAAFB2ED22@keescook>
Date: Mon, 1 Sep 2025 09:45:44 -0700
From: Kees Cook <kees@...nel.org>
To: Randy Dunlap <rdunlap@...radead.org>
Cc: Nathan Chancellor <nathan@...nel.org>,
	Nicolas Schier <nicolas.schier@...ux.dev>,
	Jonathan Corbet <corbet@....net>,
	Masahiro Yamada <masahiroy@...nel.org>,
	Arnd Bergmann <arnd@...db.de>,
	Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
	linux-kbuild@...r.kernel.org, linux-doc@...r.kernel.org,
	Miguel Ojeda <ojeda@...nel.org>,
	Stephen Brennan <stephen.s.brennan@...cle.com>,
	Marco Bonelli <marco@...eim.net>, Petr Vorel <pvorel@...e.cz>,
	linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH v2] kconfig: Add transitional symbol attribute for
 migration support

On Mon, Sep 01, 2025 at 09:39:46AM -0700, Randy Dunlap wrote:
> Are you (implicitly?) saying that all previous attempts at transitional
> kconfig symbols have failed?  If so, I just wasn't aware of that.

I haven't found any way to do a "proper" CONFIG transition. I looked
through past transitions and they all left stuff visible. Is there a way
to actually do this with existing kconfig?

-- 
Kees Cook