linux-kernel - Re: [PATCH -v2] EFI: Runtime services virtual mapping

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Date:	Wed, 02 Oct 2013 08:43:52 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Borislav Petkov <bp@...en8.de>
CC:	Dave Young <dyoung@...hat.com>, X86 ML <x86@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Borislav Petkov <bp@...e.de>,
	Matt Fleming <matt@...sole-pimps.org>,
	Matthew Garrett <mjg59@...f.ucam.org>,
	James Bottomley <James.Bottomley@...senPartnership.com>,
	Vivek Goyal <vgoyal@...hat.com>, linux-efi@...r.kernel.org
Subject: Re: [PATCH -v2] EFI: Runtime services virtual mapping

On 10/02/2013 03:04 AM, Borislav Petkov wrote:
> When we start allocating from -4G, i.e. 0xffffffff00000000, I think we
> want to do it bottom-up so that 0xffffffff00000000 is the *last*, i.e.
> lowest address. Because we link the kernel text at 0xffffffff81000000 by
> default, which would mean, if -4G was the first address, we'll have only
> 2G:

Right.

	-hpa


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