Re: [PATCH] Avoid mask based num_possible_cpus and num_online_cpus-v3

[KOSAKI Motohiro]

> If I am not missing anything obvious, applying this patch can effectively
> convert the above code into an infinite loop, among other damages!
>
> I still feel it would be safer to edit set_cpu_possible() such that
> nr_possible_cpus is updated whenever cpu_possible_mask is altered.

Yup, I agree with you. The important thing is, even if we use set_cpu_possible(),
x86 performance doesn't drop. So, I don't understand why we need to take
current strategy.
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