Adding cache shape info to powerpc

[Benjamin Herrenschmidt]

On Thu, 2016-12-01 at 16:04 -0600, Steven Munroe wrote:
> The AT_*_CACHESHAPE where encoding more information then strictly
> required for _SC_*CACHE_SIZE.
> 
> So the alternative is to define 4 new/different AT_*_CACHESIZE
> entries
> where each is just the respective cache size in KB.
> 
> This should handle current and projected values in 32-bits for the
> foreseeable future. 

You don't see any need present or future for the associativity
information at all ?

Cheers,
Ben.