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From: Ard Biesheuvel <ardb@kernel.org>
Date: Sun, 24 Mar 2024 22:53:47 +0200
Message-ID: <CAMj1kXGyKdoLZ9t9_X4diiy9GsqxJ_NkHsm_t+cAJBxhHW7mAA@mail.gmail.com>
Subject: Re: x86_64 32-bit EFI mixed mode boot broken
To: Clayton Craft <clayton@craftyguy.net>
Cc: Hans de Goede <hdegoede@redhat.com>, x86@kernel.org, linux-kernel@vger.kernel.org, 
	linux-efi@vger.kernel.org, Thomas Gleixner <tglx@linutronix.de>, 
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>, 
	Dave Hansen <dave.hansen@linux.intel.com>, regressions@lists.linux.dev
Content-Type: text/plain; charset="UTF-8"

On Sun, 24 Mar 2024 at 22:46, Clayton Craft <clayton@craftyguy.net> wrote:
>
> March 24, 2024 at 10:43 AM, "Ard Biesheuvel" <ardb@kernel.org> wrote:
>
>
> > Thanks.
> >
> > I pushed another branch
> >
> > https://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git/log/?h=efi-clayton-3
> >
> > which has a proper fix for the issue that you found.
> >
> > As it turns out, the compat mixed mode (with handover protocol) was
> >
> > broken from the beginning, and the change you identified just happened
> >
> > to trigger it on your hardware.
>
>
> Tested and fixes booting on my Bay Trail tablet and NUC. Thanks for fixing this!
>
> Tested-by: Clayton Craft <clayton@craftyguy.net>
>

Thanks!