Date: Fri, 6 Mar 2009 17:40:58 +0000 (UTC) From: Alan Cox <alc@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r189454 - head/sys/amd64/amd64 Message-ID: <200903061740.n26HewOc025204@svn.freebsd.org>
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Author: alc Date: Fri Mar 6 17:40:58 2009 New Revision: 189454 URL: http://svn.freebsd.org/changeset/base/189454 Log: If the PDE is known, then use the direct mapping instead of the recursive mapping to access the PTE. Modified: head/sys/amd64/amd64/pmap.c Modified: head/sys/amd64/amd64/pmap.c ============================================================================== --- head/sys/amd64/amd64/pmap.c Fri Mar 6 17:13:12 2009 (r189453) +++ head/sys/amd64/amd64/pmap.c Fri Mar 6 17:40:58 2009 (r189454) @@ -3801,7 +3801,9 @@ pmap_remove_pages(pmap_t pmap) if ((tpte & PG_PS) != 0) pte = pde; else { - pte = vtopte(pv->pv_va); + pte = (pt_entry_t *)PHYS_TO_DMAP(tpte & + PG_FRAME); + pte = &pte[pmap_pte_index(pv->pv_va)]; tpte = *pte & ~PG_PTE_PAT; } @@ -4494,7 +4496,7 @@ pmap_change_attr_locked(vm_offset_t va, if (!pmap_demote_pde(kernel_pmap, pde, tmpva)) return (ENOMEM); } - pte = vtopte(tmpva); + pte = pmap_pde_to_pte(pde, tmpva); if (*pte == 0) return (EINVAL); tmpva += PAGE_SIZE; @@ -4570,7 +4572,7 @@ pmap_change_attr_locked(vm_offset_t va, } else { if (cache_bits_pte < 0) cache_bits_pte = pmap_cache_bits(mode, 0); - pte = vtopte(tmpva); + pte = pmap_pde_to_pte(pde, tmpva); if ((*pte & PG_PTE_CACHE) != cache_bits_pte) { pmap_pte_attr(pte, cache_bits_pte); if (!changed)
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