Re: x86_64: Make sparsemem/vmemmap the default memory model

From: Andrew Morton
Date: Thu Nov 15 2007 - 17:13:23 EST


On Mon, 12 Nov 2007 19:42:31 -0800 (PST)
Christoph Lameter <clameter@xxxxxxx> wrote:

> x86_64: Make sparsemem/vmemmap the default memory model
>
> Use sparsemem as the only memory model for UP, SMP and NUMA.
> Measurements indicate that DISCONTIGMEM has a higher overhead
> than sparsemem. And FLATMEMs benefits are minimal. So I think its
> best to simply standardize on sparsemem.

Unfortunately some loon has gone and merged the i386 and x86_64 Kconfig
files. I was fixing that up but I worry what effects these Kconfig changes
might have on, for example, i386 NUMA setups.

So I'll duck this version, sorry.
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