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Date: Mon, 05 May 2008 20:58:37 +0200
From: Andi Kleen <andi@firstfloor.org>
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To: Johannes Weiner <hannes@saeurebad.de>
CC: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
       Ingo Molnar <mingo@elte.hu>, Yinghai Lu <yhlu.kernel@gmail.com>,
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Subject: Re: [rfc][patch 0/3] bootmem2: a memory block-oriented boot time
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> (because a PFN is not unique anymore)

That doesn't make sense. If a PFN is not uniquely mapping to a single
memory page anymore the VM and lots of other code in the kernel will
just not work. And each memory page can be only in a single node.

-Andi