linux-kernel - Re: [PATCH] x86: Construct 32 bit boot time page tables in native format.

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Message-ID: <47965555.60308@zytor.com>
Date:	Tue, 22 Jan 2008 12:43:01 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Ian Campbell <ijc@...lion.org.uk>,
	Mika Penttilä <mika.penttila@...umbus.fi>,
	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>
Subject: Re: [PATCH] x86: Construct 32 bit boot time page tables in native
 format.

Ingo Molnar wrote:
> * H. Peter Anvin <hpa@...or.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
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