linux-kernel - Re: [PATCH 0/6] efi/x86: Avoid legacy decompressor during EFI boot

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Message-ID: <20230503182433.GFZFKm4QAiqXRBYM0s@fat_crate.local>
Date:   Wed, 3 May 2023 20:24:33 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Ard Biesheuvel <ardb@...nel.org>
Cc:     Tom Lendacky <thomas.lendacky@....com>, linux-efi@...r.kernel.org,
        linux-kernel@...r.kernel.org, Evgeniy Baskov <baskov@...ras.ru>,
        Andy Lutomirski <luto@...nel.org>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Alexey Khoroshilov <khoroshilov@...ras.ru>,
        Peter Jones <pjones@...hat.com>,
        Gerd Hoffmann <kraxel@...hat.com>,
        Dave Young <dyoung@...hat.com>,
        Mario Limonciello <mario.limonciello@....com>,
        Kees Cook <keescook@...omium.org>,
        "Kirill A . Shutemov" <kirill.shutemov@...ux.intel.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH 0/6] efi/x86: Avoid legacy decompressor during EFI boot

On Wed, May 03, 2023 at 08:17:28PM +0200, Ard Biesheuvel wrote:
> (There is some 32-bit SEV code in the decompressor as well that
> obviously never gets called when booting in long mode, but I hadn't
> quite grasped how much other SEV code there actually is)

If you mean the thing in startup_32 which does get_sev_encryption_bit()
etc, that is going away.

-- 
Regards/Gruss,
    Boris.

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