From mboxrd@z Thu Jan  1 00:00:00 1970
From: Borislav Petkov <bp-Gina5bIWoIWzQB+pC5nmwQ@public.gmane.org>
Subject: Re: [PATCH 4/4] x86, efi: Map runtime services 1:1
Date: Thu, 6 Jun 2013 15:29:08 +0200
Message-ID: <20130606132908.GE20972@pd.tnic>
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Cc: Linux EFI <linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, Matthew Garrett <mjg59-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>, Jiri Kosina <jkosina-AlSwsSmVLrQ@public.gmane.org>, X86-ML <x86-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, LKML <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, Borislav Petkov <bp-l3A5Bk7waGM@public.gmane.org>
List-Id: linux-efi@vger.kernel.org

On Thu, Jun 06, 2013 at 02:14:39PM +0100, Matt Fleming wrote:
> This patch makes my TunnelMountain machine spin in handle_pte_fault()
> when triggering one of the "firmware makes references to physical
> addresses" code paths.
>
> I'll try and dig into this tomorrow to figure out what's going on.

Hmmm, looks like we have forgotten to map an EFI region and we do a #PF
when executing the EFI code.

If so, I'm thinking we don't want to touch the #PF code and teach it
about EFI so maybe we should make sure we've mapped *everything* EFI
runtime would need before we switch PGDs...

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
--