Re: discontiguous memory platforms

From: Andrea Arcangeli (
Date: Fri May 03 2002 - 01:34:19 EST

On Thu, May 02, 2002 at 10:14:02PM +0200, Daniel Phillips wrote:
> mechanism. We've been over the NUMA-Q and mips32 cases in detail, so I won't

I didn't hear the mips32 argument, but for NUMA-Q nonlinear is
definitely the last thing you want, there is no discontinuity in the ram
in each node. nonlinaer can make sense _only_ when there are ram holes
in the middle of the per-numa-node-mem_map. NUMA-Q has the need of
spreading the zone_normal over the different nodes and nonlinaer is
definitely not needed and it won't help in achieving that object, NUMA-Q
infact needs discontigmem topology description to allow the numa
optimizations so it cannot use nonlinear anyways to handle the holes
between the numa-nodes.

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