linux-kernel - Re: [Patch V1 3/7] x86/microcode/core: Move microcode

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Date:   Mon, 5 Dec 2022 17:25:17 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Ashok Raj <ashok.raj@...el.com>
Cc:     X86-kernel <x86@...nel.org>,
        LKML Mailing List <linux-kernel@...r.kernel.org>,
        Dave Hansen <dave.hansen@...el.com>,
        Tony Luck <tony.luck@...el.com>, alison.schofield@...el.com,
        reinette.chatre@...el.com
Subject: Re: [Patch V1 3/7] x86/microcode/core: Move microcode_check() to
 cpu/microcode/core.c

On Tue, Nov 29, 2022 at 01:08:28PM -0800, Ashok Raj wrote:
> microcode_check() is only called from microcode/core.c. Move it and make
> it static to prepare for upcoming fix of false negative when checking CPU
> features after a microcode update.

So this function is there in cpu/common.c because it uses CPU facilities
like cpuinfo_x86 and get_cpu_cap() so the logical place was there.
So that I don't have to export a bunch of things but rather have the
microcode loader call into it only.

Your next patch is using more of those CPU-specific facilities so
"bleeding" them into the microcode loader looks like the wrong way
around.

get_cpu_cap() deals with all those c->x86_capability arrays and other
functions which do that, should be there too.

-- 
Regards/Gruss,
    Boris.

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