Re: [PATCHSET x86/core/percpu] implement dynamic percpu allocator

[Tejun Heo]

Tejun Heo wrote:
> I can remove the TLB problem from non-NUMA case but for NUMA I still
> don't have a good idea.  Maybe we need to accept the overhead for
> NUMA?  I don't know.

Hmmmm... one thing we can do on NUMA is to remap and free the remapped
address and make __pa() and __va() handle that area specially.  It's a
bit convoluted but the added overhead should be minimal.  It'll only
be simple range check in __pa()/__va() and it's not like they are
super hot paths anyway.  I'll give it a shot.

Thanks.

-- 
tejun
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