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Replace (inlined) pmap_pte() calls with smaller, faster code where

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possible, such as the inner loop of pmap_copy().

Remove two comments that apply to i386 but not amd64.
This commit is contained in:
Alan Cox 2004-12-04 22:02:31 +00:00
parent afd05d741f
commit e07a123caf
1 changed files with 7 additions and 7 deletions
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14
sys/amd64/amd64/pmap.c
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@ -802,7 +802,7 @@ pmap_extract(pmap_t pmap, vm_offset_t va)
PMAP_UNLOCK(pmap);
return rtval;
}
pte = pmap_pte(pmap, va);
pte = pmap_pde_to_pte(pdep, va);
rtval = (*pte & PG_FRAME) | (va & PAGE_MASK);
}
}
@ -836,7 +836,7 @@ pmap_extract_and_hold(pmap_t pmap, vm_offset_t va, vm_prot_t prot)
vm_page_hold(m);
}
} else {
pte = *pmap_pte(pmap, va);
pte = *pmap_pde_to_pte(pdep, va);
if ((pte & PG_V) &&
((pte & PG_RW) || (prot & VM_PROT_WRITE) == 0)) {
m = PHYS_TO_VM_PAGE(pte & PG_FRAME);
@ -1612,8 +1612,7 @@ pmap_remove(pmap_t pmap, vm_offset_t sva, vm_offset_t eva)
ptpaddr = *pde;
/*
* Weed out invalid mappings. Note: we assume that the page
* directory table is always allocated, and in kernel virtual.
* Weed out invalid mappings.
*/
if (ptpaddr == 0)
continue;
@ -1765,8 +1764,7 @@ pmap_protect(pmap_t pmap, vm_offset_t sva, vm_offset_t eva, vm_prot_t prot)
ptpaddr = *pde;
/*
* Weed out invalid mappings. Note: we assume that the page
* directory table is always allocated, and in kernel virtual.
* Weed out invalid mappings.
*/
if (ptpaddr == 0)
continue;
@ -2339,7 +2337,9 @@ pmap_copy(pmap_t dst_pmap, pmap_t src_pmap, vm_offset_t dst_addr, vm_size_t len,
M_NOWAIT);
if (dstmpte == NULL)
break;
dst_pte = pmap_pte(dst_pmap, addr);
dst_pte = (pt_entry_t *)
PHYS_TO_DMAP(VM_PAGE_TO_PHYS(dstmpte));
dst_pte = &dst_pte[pmap_pte_index(addr)];
if (*dst_pte == 0) {
/*
* Clear the modified and