linux-kernel - Re: [PATCH 1/2] x86/microcode/AMD: Load late on both threads too

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Message-ID: <CALMp9eRT4xCrK3Up_1bQuBZNd_2ZKLFqgamvP4BtA+HuC1driQ@mail.gmail.com>
Date:   Wed, 16 Aug 2023 14:36:57 -0700
From:   Jim Mattson <jmattson@...gle.com>
To:     Borislav Petkov <bp@...en8.de>
Cc:     dave.hansen@...el.com, linux-kernel@...r.kernel.org,
        stable@...nel.org, x86@...nel.org
Subject: Re: [PATCH 1/2] x86/microcode/AMD: Load late on both threads too

On Wed, Aug 16, 2023 at 2:30 PM Borislav Petkov <bp@...en8.de> wrote:
>
> On Wed, Aug 16, 2023 at 02:23:52PM -0700, Jim Mattson wrote:
> > Specifically, "Security Version Numbers (SVNs) of the currently
> > executing platform firmware and microcode."
>
> Yes, I know the microcode revision is part of the attestation.
>
> What exactly are you asking?
>
> If you don't state your question, how do you expect me to answer?

Doesn't this render that attestation misleading, since the microcode
patch may not have been loaded on all logical processors?

--
> Regards/Gruss,
>     Boris.
>
> https://people.kernel.org/tglx/notes-about-netiquette