Avi Kivity wrote:
Jeremy Fitzhardinge wrote:
Yes. It seems however that only set_pte_at/pte_update/_defer are
used under significatly long lazy mmu sections (long as in number of
updates). Is it worthwhile to bother (and risk) batching kernel pte
updates ?
Well, that depends on how expensive each update is. For something
like kunmap atomic, I think combining the clear+tlb flush probably is
worthwhile.
I agree, kmap_atomic() is fairly common.
(Not that we're actually batching it at present; we need to work out
proper semantics for nesting batches...)
J
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