linux-kernel - Re: [PATCH v4] x86/bugs: Add a separate config for each mitigation

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Message-ID: <20231016124654.GDZS0wvqJlsf+iVAeu@fat_crate.local>
Date:   Mon, 16 Oct 2023 14:46:54 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     Josh Poimboeuf <jpoimboe@...nel.org>,
        Breno Leitao <leitao@...ian.org>, tglx@...utronix.de,
        Ingo Molnar <mingo@...hat.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
        "H. Peter Anvin" <hpa@...or.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Pawan Gupta <pawan.kumar.gupta@...ux.intel.com>, leit@...a.com,
        "open list:X86 ARCHITECTURE (32-BIT AND 64-BIT)" 
        <linux-kernel@...r.kernel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH v4] x86/bugs: Add a separate config for each mitigation

On Mon, Oct 16, 2023 at 12:07:59PM +0200, Ingo Molnar wrote:
> Unless someone like Linus shuts down this effort with a NAK, this kind of 
> harmonization would be welcome IMHO:

Harmonization being done for whom?

Because I doubt users read Kconfig names. So you must be wanting it for
us, who do stare at that code.

Which brings me to my initial question from uptread:

"What does the same namespace give you? So you see in the code a bunch
of ifdeffery and some or all of them have CONFIG_MITIGATION_ prepended.
To me it doesn't matter whether they're mitigations or not - it is just
the next Kconfig symbol."

IOW, I don't see the particular reason for having those namespaced. But
since you and Josh care so much and I don't - not that much :-) - and
I definitely won't be doing the work, feel free.

Thx.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette