Re: [PATCH 0/2] NR_CPUS: increase maximum NR_CPUS to 4096

From: Ingo Molnar
Date: Wed Mar 26 2008 - 02:19:49 EST



* Mike Travis <travis@xxxxxxx> wrote:

> Increases the limit of NR_CPUS to 4096 and introduces a boolean called
> "MAXSMP" which when set (e.g. "allyesconfig") will set NR_CPUS = 4096
> and NODES_SHIFT = 9 (512).
>
> I've been running this config (4k NR_CPUS, 512 Max Nodes) on an AMD
> box with 2 dual-cores and 4gb memory. I've also successfully booted
> it in a simulated 2cpus/1Gb environment.

cool!

this depends on the cpumask changes to work correctly (i.e. to boot at
all), right?

Ingo
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