Re: [PATCH] percpu data: only iterate over possible CPUs

Andrew Morton <[email protected]> wrote:
>
> Users of __GENERIC_PER_CPU definitely need cpu_possible_map to be initialised
>  by the time setup_per_cpu_areas() is called,

err, they'll need it once Eric's
dont-waste-percpu-memory-on-not-possible-CPUs patch is merged..

> so I think it makes sense to
>  say "thou shalt initialise cpu_possible_map in setup_arch()".
> 
>  I guess Xen isn't doing that.  Can it be made to?

Lame fix:  cpu_possible_map = (1<<NR_CPUS)-1 in setup_arch().
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Follow-Ups:
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References:
- Re: [PATCH] percpu data: only iterate over possible CPUs
  - From: Rik van Riel <[email protected]>
- Re: [PATCH] percpu data: only iterate over possible CPUs
  - From: Andrew Morton <[email protected]>

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