linux-kernel - Re: [RFC] [PATCH] more support for memory-less-node.

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Date:	Tue, 13 Feb 2007 09:29:49 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	LKML <linux-kernel@...r.kernel.org>, Andrew Morton <akpm@...l.org>,
	Christoph Lameter <clameter@....com>, bob.picco@...com
Subject: Re: [RFC] [PATCH] more support for memory-less-node.


> In my understanding, a "node" is a block of cpu, memory, devices.
> and there could be cpu-only-node, memory-only-node, device-only-node...

The trouble with this is that you'll need to harden large parts
of code against these.  Especially a NULL pgdat is something quite
dangerous. You could make it a dummy empty pgdat, but just assigning it
nearby seems easier.

-Andi
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