Andi Kleen wrote:
quoted text
> Linus Torvalds <torvalds@linux-foundation.org> writes:
>> Btw - the way to avoid this whole problem might be to make CPU migration 
>> use a *different* CPU map than "online".
> 
> In general I think we need more such masks. Some time ago I had
> a patch to introduce cpu_ever_online_mask, which prevented some
> problems with accessing uninitialized per cpu data.

Not to divert the conversation too much but I would like to see these
maps allocated based on the real number of cpus and not NR_CPUS.

Thanks,
Mike
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