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Date: Tue, 23 Oct 2007 16:55:13 -0700
From: "H. Peter Anvin" <hpa@zytor.com>
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To: Andi Kleen <ak@suse.de>
CC: Jeremy Fitzhardinge <jeremy@goop.org>,
       "Huang, Ying" <ying.huang@intel.com>,
       "Eric W. Biederman" <ebiederm@xmission.com>, akpm@linux-foundation.org,
       Linus Torvalds <torvalds@linux-foundation.org>,
       linux-kernel@vger.kernel.org
Subject: Re: [PATCH -v7 1/3] x86 boot: setup data
References: <1193126771.23935.79.camel@caritas-dev.intel.com> <471E70E0.2090802@goop.org> <200710240118.21160.ak@suse.de>
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Andi Kleen wrote:
> 
> With the early reserve code in 
> ftp://firstfloor.org/pub/ak/x86_64/quilt/patches/early-reserve
> and
> ftp://firstfloor.org/pub/ak/x86_64/quilt/patches/early-alloc
> this could be likely done cleaner.
> 

Indeed it could.  For i386, the equivalent code would have another 
significant benefit: reserving memory and then mapping and accessing it 
later would (at least eventually) allow accesses > 4 GB on PAE kernels 
(or with a PSE36 hack, on non-PAE kernels.)

	-hpa