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Date:   Fri, 14 Jul 2023 10:13:10 +0100
From:   Matthew Garrett <mjg59@srcf.ucam.org>
To:     Ard Biesheuvel <ardb@kernel.org>
Cc:     Luca Boccassi <bluca@debian.org>, Peter Jones <pjones@redhat.com>,
        Emanuele Giuseppe Esposito <eesposit@redhat.com>,
        x86@kernel.org, Thomas Gleixner <tglx@linutronix.de>,
        lennart@poettering.net, Ingo Molnar <mingo@redhat.com>,
        Borislav Petkov <bp@alien8.de>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        "H. Peter Anvin" <hpa@zytor.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Masahiro Yamada <masahiroy@kernel.org>,
        Alexander Potapenko <glider@google.com>,
        Nick Desaulniers <ndesaulniers@google.com>,
        Vitaly Kuznetsov <vkuznets@redhat.com>,
        Daniel P =?iso-8859-1?Q?=2E_Berrang=E9?= <berrange@redhat.com>,
        linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org
Subject: Re: [RFC PATCH v2] x86/boot: add .sbat section to the bzImage
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On Fri, Jul 14, 2023 at 10:52:20AM +0200, Ard Biesheuvel wrote:

> Maybe the OEMs have gotten better at this over the years, but it is
> definitely not possible for the distros to rely on being able to get
> their own cert into KEK and sign their builds directly.

Getting certs into local machine databases should[1] be possible on all 
Windows certified machines, but in the status-quo there's no 
cross-vendor solution to doing this. Relying on the Shim-provided 
mechanisms is much safer from a consistency perspective.

[1] Every time someone has claimed it's impossible to me I've ended up 
demonstrating otherwise, but that's not a guarantee