Re: [PATCH v3] mm: make expand_downwards symmetrical toexpand_upwards

From: Matthew Wilcox
Date: Wed Apr 20 2011 - 07:20:32 EST


On Wed, Apr 20, 2011 at 10:34:23AM +0300, Pekka Enberg wrote:
> That part makes me think the best option is to make parisc do
> CONFIG_NUMA as well regardless of the historical intent was.

But it's not just parisc. It's six other architectures as well, some
of which aren't even SMP. Does !SMP && NUMA make any kind of sense?

I think really, this is just a giant horrible misunderstanding on the part
of the MM people. There's no reason why an ARM chip with 16MB of memory
at 0 and 16MB of memory at 1GB should be saddled with all the NUMA gunk.

--
Matthew Wilcox Intel Open Source Technology Centre
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours. We can't possibly take such
a retrograde step."
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