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Date: Wed, 19 Jun 2013 17:05:23 +0100
From: Matthew Garrett <mjg59@srcf.ucam.org>
To: Borislav Petkov <bp@alien8.de>
Cc: Ingo Molnar <mingo@kernel.org>, Linux EFI <linux-efi@vger.kernel.org>,
        Matt Fleming <matt@console-pimps.org>, X86 ML <x86@kernel.org>,
        LKML <linux-kernel@vger.kernel.org>, Borislav Petkov <bp@suse.de>
Subject: Re: [PATCH -v2 0/4] EFI 1:1 mapping
Message-ID: <20130619160523.GA27832@srcf.ucam.org>
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 <20130619130225.GA28311@pd.tnic>
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On Wed, Jun 19, 2013 at 03:02:25PM +0200, Borislav Petkov wrote:
> On Wed, Jun 19, 2013 at 02:52:43PM +0200, Ingo Molnar wrote:
> > I hope making it a weird boot option is not the end plan, there's
> > little point in _not_ enabling 1:1 mappings by default eventually:
> > the 1:1 mapping is supposed to emulate a "Windows compatible" EFI
> > environment better and is expected to work around certain EFI runtime
> > crashes.
> 
> And yet there are the Macs which reportedly cannot stomach this.

I suspect they'll be fine with having a 1:1 map, as long as we pass the 
high mappings via SetVirtualAddressMap().

-- 
Matthew Garrett | mjg59@srcf.ucam.org