linux-kernel - Re: x86/boot/compressed/64: Lenovo Ideapad Miix300 bug report

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Message-ID: <YR5dtDvvcgekoIJu@suse.de>
Date:   Thu, 19 Aug 2021 15:33:40 +0200
From:   Joerg Roedel <jroedel@...e.de>
To:     Fabio Aiuto <fabioaiuto83@...il.com>
Cc:     Borislav Petkov <bp@...en8.de>, Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Hans de Goede <hdegoede@...hat.com>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: Re: x86/boot/compressed/64: Lenovo Ideapad Miix300 bug report

Hi Fabio,

thanks for your report!

On Thu, Aug 19, 2021 at 02:16:53PM +0200, Fabio Aiuto wrote:
> I rebuilt a plain v5.13 kernel (no reverts) with that config
> disabled and everything goes fine.

Can you please try the attached patch? I think the problem is that the
32-bit EFI boot path sets up its own IDT before ExitBootServices() is
called.

Regards,

	Joerg

View attachment "boot-idt.fix" of type "text/plain" (2209 bytes)