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

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Message-ID: <4c75e5b0-48fe-4778-8ec5-d8d43009ddd4@infradead.org>
Date: Mon, 1 Sep 2025 09:54:25 -0700
From: Randy Dunlap <rdunlap@...radead.org>
To: Kees Cook <kees@...nel.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 9/1/25 9:45 AM, Kees Cook wrote:
> 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?
> 

I don't know. I haven't looked as hard at it as you have.
I just didn't realize that there had been significant failures
that required kconfig code changes.

I'm just trying to understand. Carry on.

-- 
~Randy