diff options
Diffstat (limited to 'sys/i386')
-rw-r--r-- | sys/i386/i386/pmap.c | 25 |
1 files changed, 17 insertions, 8 deletions
diff --git a/sys/i386/i386/pmap.c b/sys/i386/i386/pmap.c index d717876..a4a2169 100644 --- a/sys/i386/i386/pmap.c +++ b/sys/i386/i386/pmap.c @@ -4959,7 +4959,7 @@ pmap_advise(pmap_t pmap, vm_offset_t sva, vm_offset_t eva, int advice) { pd_entry_t oldpde, *pde; pt_entry_t *pte; - vm_offset_t pdnxt; + vm_offset_t va, pdnxt; vm_page_t m; boolean_t anychanged, pv_lists_locked; @@ -5020,11 +5020,11 @@ resume: } if (pdnxt > eva) pdnxt = eva; + va = pdnxt; for (pte = pmap_pte_quick(pmap, sva); sva != pdnxt; pte++, sva += PAGE_SIZE) { - if ((*pte & (PG_MANAGED | PG_V)) != (PG_MANAGED | - PG_V)) - continue; + if ((*pte & (PG_MANAGED | PG_V)) != (PG_MANAGED | PG_V)) + goto maybe_invlrng; else if ((*pte & (PG_M | PG_RW)) == (PG_M | PG_RW)) { if (advice == MADV_DONTNEED) { /* @@ -5039,12 +5039,21 @@ resume: } else if ((*pte & PG_A) != 0) atomic_clear_int((u_int *)pte, PG_A); else - continue; - if ((*pte & PG_G) != 0) - pmap_invalidate_page(pmap, sva); - else + goto maybe_invlrng; + if ((*pte & PG_G) != 0) { + if (va == pdnxt) + va = sva; + } else anychanged = TRUE; + continue; +maybe_invlrng: + if (va != pdnxt) { + pmap_invalidate_range(pmap, va, sva); + va = pdnxt; + } } + if (va != pdnxt) + pmap_invalidate_range(pmap, va, sva); } if (anychanged) pmap_invalidate_all(pmap); |