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Date: Mon, 02 Jun 2008 20:24:38 +0100
From: Jeremy Fitzhardinge <jeremy@goop.org>
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To: Yinghai Lu <yhlu.kernel@gmail.com>
CC: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: More e820 unification?
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Yinghai Lu wrote:
> [PATCH] x86: cleanup max_pfn_mapped usage - 32bit
> may need you update xen pv to specify max_pfn_mapped early stage...

Ah, yes, I saw your mail.  What exactly does that value mean?  What 
should I set it to?

    J