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Date:   Tue, 21 Nov 2023 21:39:47 +0000
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Subject: Re: [PATCH v6 10/13] x86/bugs: Rename RETHUNK to MITIGATION_RETHUNK
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To:     Breno Leitao <leitao@debian.org>, jpoimboe@kernel.org,
        mingo@redhat.com, tglx@linutronix.de, bp@alien8.de,
        Dave Hansen <dave.hansen@linux.intel.com>, x86@kernel.org,
        "H. Peter Anvin" <hpa@zytor.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Pawan Gupta <pawan.kumar.gupta@linux.intel.com>,
        Jason Baron <jbaron@akamai.com>,
        Steven Rostedt <rostedt@goodmis.org>,
        Ard Biesheuvel <ardb@kernel.org>,
        Masahiro Yamada <masahiroy@kernel.org>,
        Nathan Chancellor <nathan@kernel.org>,
        Nick Desaulniers <ndesaulniers@google.com>,
        Nicolas Schier <nicolas@fjasle.eu>
Cc:     leit@meta.com, linux-kernel@vger.kernel.org,
        Ingo Molnar <mingo@kernel.org>,
        Lukas Bulwahn <lukas.bulwahn@gmail.com>,
        Sven Joachim <svenjoac@gmx.de>, Ian Kent <raven@themaw.net>,
        Yu-cheng Yu <yu-cheng.yu@intel.com>,
        Kees Cook <keescook@chromium.org>,
        Rick Edgecombe <rick.p.edgecombe@intel.com>,
        Kim Phillips <kim.phillips@amd.com>,
        Juergen Gross <jgross@suse.com>,
        "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
        Randy Dunlap <rdunlap@infradead.org>,
        Jinghao Jia <jinghao@linux.ibm.com>,
        Vincent Whitchurch <vincent.whitchurch@axis.com>,
        Arnaldo Carvalho de Melo <acme@redhat.com>
References: <20231121160740.1249350-1-leitao@debian.org>
 <20231121160740.1249350-11-leitao@debian.org>
From:   Andrew Cooper <andrew.cooper3@citrix.com>
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In-Reply-To: <20231121160740.1249350-11-leitao@debian.org>
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On 21/11/2023 4:07 pm, Breno Leitao wrote:
> CPU mitigations config entries are inconsistent, and names are hard to
> related. There are concrete benefits for both users and developers of
> having all the mitigation config options living in the same config
> namespace.
>
> The mitigation options should have consistency and start with
> MITIGATION.
>
> Rename the Kconfig entry from RETHUNK to MITIGATION_RETHUNK.
>
> Suggested-by: Josh Poimboeuf <jpoimboe@kernel.org>
> Signed-off-by: Breno Leitao <leitao@debian.org>

(I'm CC'd on only this single patch so I can't see what's going on, but)

Really?  Rethunk[sic] isn't a mitigation.  It's just a compiler
transformation for return instructions upon which various mitigations
depend.

~Andrew