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Date: Thu, 24 Oct 2002 07:51:46 -0700
From: "Martin J. Bligh" <mbligh@aracnet.com>
Reply-To: "Martin J. Bligh" <mbligh@aracnet.com>
To: Dave McCracken <dmccr@us.ibm.com>, Bill Davidsen <davidsen@tmr.com>
cc: Rik van Riel <riel@conectiva.com.br>,
       "Eric W. Biederman" <ebiederm@xmission.com>,
       Andrew Morton <akpm@digeo.com>,
       Linux Kernel <linux-kernel@vger.kernel.org>,
       Linux Memory Management <linux-mm@kvack.org>
Subject: Re: [PATCH 2.5.43-mm2] New shared page table patch
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>>> Another thought, how does this play with NUMA systems? I don't have the
>>> problem, but presumably there are implications.
>> 
>> At some point we'll probably only want one shared set per node.
>> Gets tricky when you migrate processes across nodes though - will
>> need more thought
> 
> Page tables can only be shared when they're pointing to the same 
> data pages anyway, so I think it's just part of the larger problem 
> of node-local memory.

Yes, same problem as text replication. You're right, it's probably not 
worth solving otherwise - too small a percentage of the real problem.

M.

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