linux-kernel - Re: [PATCH 0/2] NR_CPUS: increase maximum NR

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Message-ID: <20080326061925.GC18301@elte.hu>
Date:	Wed, 26 Mar 2008 07:19:25 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Mike Travis <travis@....com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/2] NR_CPUS: increase maximum NR_CPUS to 4096


* Mike Travis <travis@....com> 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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