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SubjectRe: pte-highmem vs UKVA (was: object-based rmap and pte-highmem)
> This just just for PTEs ... for which at the moment we have two choices:
> 1. Stick them in lowmem (fills up the global space too much).
> 2. Stick them in highmem - too much overhead doing k(un)map_atomic
> as measured by both myself and Andrew.

Actually Andrew's measurements seem to be a bit different from mine ...
several different things all interacting. I'll try to get some more
measurements from a straight SMP box, and see if they correlate more
closely with what he's seeing.


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