9b123ca12a
1. Make the caller responsible for performing pmap_install(). This reduces the number of times that pmap_install() is performed by pmap_enter_object() from twice per page to twice overall. 2. Don't block if pmap_find_pte() is unable to allocate a PTE. If it did block, then it might wind up mapping a cache page. Specifically, if pmap_enter_quick_locked() slept when called from pmap_enter_object(), the page daemon could change an active or inactive page into a cache page just before it was to be mapped. 3. Bail out of pmap_enter_quick_locked() if pv entries aren't plentiful. In other words, don't force the allocation of a pv entry if they aren't readily available. Reviewed by: marcel@ |
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| isa | ||
| pci | ||