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From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Fri, 3 Feb 2017 08:35:22 -0800
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Subject: Re: [REGRESSION][v4.9.y][v4.10.y] x86/efi: Only map RAM into EFI page
 tables if in mixed-mode
To: Joseph Salisbury <joseph.salisbury@canonical.com>
Cc: Laura Abbott <labbott@redhat.com>,
        Matt Fleming <matt@codeblueprint.co.uk>,
        Waiman Long <waiman.long@hpe.com>,
        Ard Biesheuvel <ard.biesheuvel@linaro.org>,
        Borislav Petkov <bp@alien8.de>, "Theodore Ts'o" <tytso@mit.edu>,
        Arnd Bergmann <arnd@arndb.de>, Greg KH <gregkh@linuxfoundation.org>,
        Scott J Norton <scott.norton@hpe.com>,
        Douglas Hatch <doug.hatch@hpe.com>,
        "stable@vger.kernel.org" <stable@vger.kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>,
        "H. Peter Anvin" <hpa@zytor.com>,
        "the arch/x86 maintainers" <x86@kernel.org>,
        "linux-efi@vger.kernel.org" <linux-efi@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>
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On Fri, Feb 3, 2017 at 6:16 AM, Joseph Salisbury
<joseph.salisbury@canonical.com> wrote:
> On 02/02/2017 03:36 PM, Laura Abbott wrote:
>>
>> You might try https://marc.info/?l=linux-kernel&m=148553171703761
>> which fixed https://bugzilla.redhat.com/show_bug.cgi?id=1384238
>
> This patch resolves the bug for multiple users.  Thanks again for the
> pointer, Laura and Ard!

.. and that patch should be in mainline now (and is marked for
stable), having gotten merged with the EFI fixes pull yesterday.

               Linus