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Date: Sat, 26 Sep 2009 20:20:43 +0200
From: Andi Kleen <andi@firstfloor.org>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Andi Kleen <andi@firstfloor.org>, Ingo Molnar <mingo@elte.hu>,
       torvalds@linux-foundation.org, fengguang.wu@intel.com,
       linux-kernel@vger.kernel.org, akpm@linux-foundation.org,
       Thomas Gleixner <tglx@linutronix.de>,
       Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: [origin tree build failure] Re: [PULL] Please pull hwpoison code for 2.6.32
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On Sat, Sep 26, 2009 at 11:15:23AM -0700, H. Peter Anvin wrote:
> We're definitely going to continue to have this problem until we decide we have hit the pain threshold either support external *zone* numbers or permit a 64-bit pageflags.

Yes I agree. I implemented a perfect hash scheme for the NUMA pfn->node
mapping a long time ago which is still there, that code could be probably
extended to support zones too. It would just make the hash slightly larger.

-Andi