linux-kernel - Re: [v2 03/13] x86/microcode/intel: Fix a hang if early loading microcode fails

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Message-ID: <Y2w5DQLVBMCkMmTF@zn.tnic>
Date:   Thu, 10 Nov 2022 00:34:37 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Ashok Raj <ashok.raj@...el.com>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        LKML Mailing List <linux-kernel@...r.kernel.org>,
        X86-kernel <x86@...nel.org>, Tony Luck <tony.luck@...el.com>,
        Dave Hansen <dave.hansen@...el.com>,
        Arjan van de Ven <arjan.van.de.ven@...el.com>,
        Andy Lutomirski <luto@...nel.org>,
        Jacon Jun Pan <jacob.jun.pan@...el.com>,
        Tom Lendacky <thomas.lendacky@....com>,
        Kai Huang <kai.huang@...el.com>,
        Andrew Cooper <andrew.cooper3@...rix.com>
Subject: Re: [v2 03/13] x86/microcode/intel: Fix a hang if early loading
 microcode fails

On Wed, Nov 09, 2022 at 08:07:32AM -0800, Ashok Raj wrote:
> - Take a microcode file from the distribution for a different fms that didn't
>   belong to the one you are testing.
> - You will have to fake the external header data and change it to the one
>   you want microcode match to work 
> - recompute all checksums and use that file instead of the original file.

This sounds like this cannot happen with officially released microcode -
only with something "hacked". If so, I'm not interested in such "fixes".

-- 
Regards/Gruss,
    Boris.

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