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Date: Thu, 24 Jan 2008 14:58:17 -0800
From: Jeremy Fitzhardinge <jeremy@goop.org>
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To: "H. Peter Anvin" <hpa@zytor.com>
CC: Ian Campbell <ijc@hellion.org.uk>, Ingo Molnar <mingo@elte.hu>,
       =?UTF-8?B?TWlrYSBQZW50dGlsw6Q=?= <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.
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H. Peter Anvin wrote:
> Yeah, and it's ugly for the kernel proper, so that bit is a 
> no-brainer.  It's just a matter of hammering out the details.
>
> It doesn't sound from the above that you have any opinion either way 
> about reusing the initial page tables or creating a new set, as long 
> as they're in the same format. 

Right.

Xen provides a initial set of pagetables in the appropriate format, so 
what head.S generates is moot.  For simplicity I graft the Xen-provided 
pagetables into swapper_pg_dir in xen_start_kernel, so it is the 
functional equivalent to the head.S pagetable construction.

We also don't (yet) support PSE, so that's a non-issue for us too.

    J