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Date: Tue, 27 Nov 2007 15:15:00 -0800 (PST)
From: Christoph Lameter <clameter@sgi.com>
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To: Andrew Morton <akpm@linux-foundation.org>
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Subject: Re: [PATCH 1/1] mm: Prevent dereferencing non-allocated per_cpu
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On Tue, 27 Nov 2007, Andrew Morton wrote:

> hm.  Has anyone any evidence that we're actually touching
> not-possible-cpu's memory here?

I saw it in acpi when the __cpu_offset() pointers become zero. I have 
never seen it in vmstat.c. We do not need the vmstat.c fix.