linux-kernel - Re: [Patch3/4]: fake numa for x86

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Date:	Mon, 27 Nov 2006 09:59:08 -0800
From:	Rohit Seth <rohitseth@...gle.com>
To:	Andi Kleen <ak@...e.de>
Cc:	Mel Gorman <mel@....ul.ie>, Andrew Morton <akpm@...l.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	David Rientjes <rientjes@...washington.edu>,
	Paul Menage <menage@...gle.com>
Subject: Re: [Patch3/4]: fake numa for x86_64 patches

On Thu, 2006-11-23 at 10:04 +0100, Andi Kleen wrote:
> On Wed, Nov 22, 2006 at 05:34:47PM -0800, Rohit Seth wrote:
> > Fix the existing numa=fake so that ioholes are appropriately configured.
> > Currently machines that have sizeable IO holes don't work with
> > numa=fake>4.  This patch tries to equally partition the total available
> > memory in equal size chunk.  The minimum size of the fake node is set to
> > 32MB.
> 
> This patch seems to do far more than advertised in the change log? 
> 
> You're conflicting badly with Amul's numa hash function rewrite for example.
> 

Both of these patches are mucking with hash function and
populate_memnodemap.  I like Amul's approach of doing dynamic allocation
of numa hash map so that it can support >64GB of memory space.  I will
resend the patches on top of his patch (incorporating your other
feedback).

-rohit




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