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

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Date:	Tue, 22 Jan 2008 13:00:36 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Ian Campbell <ijc@...lion.org.uk>
CC:	Ingo Molnar <mingo@...e.hu>,
	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.

Ian Campbell wrote:
> On Tue, 2008-01-22 at 21:36 +0100, 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 :)
> 
> I'm not sure I can promise that sort of coverage ;-) Will test on what
> hardware I've got available...
> 

I tend to use simulators (e.g. Qemu) quite a bit.  They let you tune 
this kind of stuff.

	-hpa
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