linux-kernel - Re: [PATCH 0/3] x86: Reduce memory and intra-node effects with large count NR

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Message-ID: <Pine.LNX.4.64.0801181054180.30775@schroedinger.engr.sgi.com>
Date:	Fri, 18 Jan 2008 10:54:59 -0800 (PST)
From:	Christoph Lameter <clameter@....com>
To:	Mike Travis <travis@....com>
cc:	Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Andi Kleen <ak@...e.de>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/3] x86: Reduce memory and intra-node effects with large
 count NR_CPUs fixup

On Fri, 18 Jan 2008, Mike Travis wrote:

 > I hadn't considered doing 32-bit NUMA changes as I didn't know if the
> NR_CPUS count would really be increased for the 32-bit architecture.
> I have been trying though not to break it. ;-)

32bit NUMA is tricky because ZONE_NORMAL memory is only available on node 
0. There have been thorny difficult to debug issues in the past...


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