Re: [PATCH] Fix hotplug cpu on x86_64

[Anton Blanchard]

Hi,

> I also have a followon patch to avoid the extreme memory wastage
> currently caused by hotplug CPUs (e.g. with NR_CPUS==128 you currently
> lose 4MB of memory just for preallocated per CPU data). But that is
> something for post 2.6.14.

Im interested in doing that on ppc64 too. Are you currently only
creating per cpu data areas for possible cpus? The generic code does
NR_CPUS worth, we should change that in 2.6.15.

Anton
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