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Use direct map in pmap_map().

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This saves much KVA for vm_pages and you don't need to increase NKPT
for large physical memory anymore.

Suggested by: dfr
This commit is contained in:
Hidetoshi Shimokawa 2003-06-20 14:09:33 +00:00
parent 3c6001ec5d
commit e14720d614
1 changed files with 1 additions and 11 deletions
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12
sys/amd64/amd64/pmap.c
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@ -812,17 +812,7 @@ pmap_kremove(vm_offset_t va)
vm_offset_t
pmap_map(vm_offset_t *virt, vm_paddr_t start, vm_paddr_t end, int prot)
{
vm_offset_t va, sva;
va = sva = *virt;
while (start < end) {
pmap_kenter(va, start);
va += PAGE_SIZE;
start += PAGE_SIZE;
}
pmap_invalidate_range(kernel_pmap, sva, va);
*virt = va;
return (sva);
return PHYS_TO_DMAP(start);
}