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

[Andrew Morton]

Heiko Carstens <heiko.carstens@xxxxxxxxxx> wrote:
>
> > > > > aargh.
> > >  > Actually, x86 appears to be the only arch which suffers this braindamage. 
> > >  > The rest use CPU_MASK_NONE (or just forget to initialise it and hope that
> > >  > CPU_MASK_NONE equals all-zeroes).
> > > 
> > >  s390 will join, as soon as the cpu_possible_map fix is merged...
> > 
> > What cpu_possible_map fix?
> 
> This one:
> 
> http://lkml.org/lkml/2006/2/8/162
> 

Oh, OK.  Ow, I don't think you want to do that.  It means that all those
for_each_cpu() loops will now be iterating over all NR_CPUS cpus, whether
or not they're even possible.

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