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