linux-kernel - Re: [tip:x86/urgent] x86/cpufeature: Add AVX512_4VNNIW and AVX512

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Date:   Sun, 16 Oct 2016 18:35:57 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     hpa@...or.com
Cc:     Ingo Molnar <mingo@...nel.org>, peterz@...radead.org,
        tglx@...utronix.de, dave.hansen@...el.com,
        torvalds@...ux-foundation.org, piotr.luc@...el.com,
        luto@...nel.org, brgerst@...il.com, linux-kernel@...r.kernel.org,
        dvlasenk@...hat.com, jpoimboe@...hat.com,
        linux-tip-commits@...r.kernel.org
Subject: Re: [tip:x86/urgent] x86/cpufeature: Add AVX512_4VNNIW and
 AVX512_4FMAPS features

On Sun, Oct 16, 2016 at 09:02:51AM -0700, hpa@...or.com wrote:
> No, please.  That would be worse than the disease.

Why not?

I did that recently with a bunch of leaves and there were no issues:

2ccd71f1b278 ("x86/cpufeature: Move some of the scattered feature bits to x86_capability")

There it obviously made sense for 0x00000006 and 0x8000000a to have a
separate ->x86_capability leaf.

-- 
Regards/Gruss,
    Boris.

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