linux-kernel - Re: x86 patches was Re: -mm merge plans for 2.6.24

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Message-Id: <20071002004324.be030b63.akpm@linux-foundation.org>
Date:	Tue, 2 Oct 2007 00:43:24 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	Andi Kleen <andi@...stfloor.org>, linux-kernel@...r.kernel.org,
	mpm@...enic.com, "Huang, Ying" <ying.huang@...el.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Christoph Lameter <clameter@....com>, apw@...dowen.org,
	"Lee.Schermerhorn@...com" <Lee.Schermerhorn@...com>
Subject: Re: x86 patches was Re: -mm merge plans for 2.6.24

On Tue, 2 Oct 2007 16:36:24 +0900 KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com> wrote:

> On Tue, 2 Oct 2007 00:18:09 -0700
> Andrew Morton <akpm@...ux-foundation.org> wrote:
> > > 
> > > > How come?  Memoryless node can and do occur in real-world machines.  Kernel
> > > > should support that?
> > > 
> > > But a node is just defined by its memory? 
> > 
> > Don't think so.  A node is a lump of circuitry which can have zero or more
> > CPUs, IO and memory.
> > 
> > It may initially have been conceived as a memory-only concept in the Linux
> > kernel, but that doesn't fully map onto reality (does it?)
> > 
> > There was a real-world need for this, I think from the Fujitsu guys.  That
> > should be spelled out in the changelog but isn't.
> 
> Yes, Fujitsu and HP guys really need this memory-less-node support. 
> 

For what reason, please?
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