> > IA64 has a 64KB page allocated for each cpu for the percpu data. Right
> > now we are using 28K-32K for the arch/ia64/configs/* variations.
>
> Could that be enlarged without too much trouble?

If we stick to mapping it with a single TLB entry, then the next
size up is 256K ... which is a pretty big jump.  But the code that
does the mapping is just about to be changed from a single locked
TLB entry to a map-on-tlb-miss version (thanks to Ken Chen). Some
small-ish additions to that code would allow an expansion to 128K
by mapping each half with a 64K TLB entry on demand.

-Tony
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