linux-kernel - Re: [PATCH] x86/microcode: Do not select FW

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Message-ID: <20200610134650.GH14118@zn.tnic>
Date:   Wed, 10 Jun 2020 15:46:50 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Luis Chamberlain <mcgrof@...nel.org>
Cc:     Herbert Xu <herbert@...dor.apana.org.au>,
        Thomas Gleixner <tglx@...utronix.de>,
        "H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...hat.com>,
        x86-ml <x86@...nel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Greg KH <gregkh@...uxfoundation.org>
Subject: Re: [PATCH] x86/microcode: Do not select FW_LOADER

On Wed, Jun 10, 2020 at 01:12:09PM +0000, Luis Chamberlain wrote:
> On Wed, Jun 10, 2020 at 10:16:09AM +0200, Borislav Petkov wrote:
> > 
> > Also, I'm working on removing that homegrown get_builtin_firmware() and
> > use the one in the fw loader:
> > 
> > https://lkml.kernel.org/r/20200408094526.GC24663@zn.tnic
> 
> I would like to still encourage this, even with this patch in place,
> as I think it makes this a proper call, and reflects better how the
> firmware loader is used exactly.
> 
> FWIW, firmware loader will be changed soon to not be modular, and just
> built-in or disabled.

I don't mind doing the work but Herbert has a point - there's no need to
require a bunch of code for a trivial function.

What I could do in addition is move that trivial function into a
fw-specific header and have it defined unconditionally so that the
microcode loader can use it without needing the fw loader.

The testcases stuff then goes ontop.

Yes, no?

-- 
Regards/Gruss,
    Boris.

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