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Date: Tue, 22 Jan 2008 12:43:01 -0800
From: "H. Peter Anvin" <hpa@zytor.com>
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To: Ingo Molnar <mingo@elte.hu>
CC: Ian Campbell <ijc@hellion.org.uk>,
       =?ISO-8859-1?Q?Mika_Penttil=E4?= <mika.penttila@kolumbus.fi>,
       linux-kernel@vger.kernel.org, Thomas Gleixner <tglx@linutronix.de>,
       Ingo Molnar <mingo@redhat.com>,
       "Eric W. Biederman" <ebiederm@xmission.com>
Subject: Re: [PATCH] x86: Construct 32 bit boot time page tables in native
 format.
References: <1200758937-22386-2-git-send-email-ijc@hellion.org.uk> <47939363.8040603@kolumbus.fi> <1200950633.15491.21.camel@cthulhu.hellion.org.uk> <479510CE.7010706@zytor.com> <1200951996.15491.28.camel@cthulhu.hellion.org.uk> <479551FD.5040801@zytor.com> <1201023401.5643.52.camel@localhost.localdomain> <479634A9.1090908@zytor.com> <1201031325.15491.66.camel@cthulhu.hellion.org.uk> <47964B7B.9000905@zytor.com> <20080122203611.GA12892@elte.hu>
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Ingo Molnar wrote:
> * H. Peter Anvin <hpa@zytor.com> wrote:
> 
>>> Seems reasonable to me. I'll integrate your asm diff with the other 
>>> changes and give it a whirl.
>> This version boots into userspace on both PAE and !PAE.  You want to 
>> take it from here?
> 
> ok, i'll wait for Ian to submit the final (tested) version then. A few 
> possible complications are: PSE-less boxes, 32-bit PAGEALLOC bootups 
> with tons of RAM, NX-less boxes and NX-able boxes :)

PSE-less should be less of an issue than making sure we switch to using 
large pages where appropriate, and enable the PGE and NX bits where 
appropriate.

	-hpa