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Allocate the page table directory page as "no object" pages.
This commit is contained in:
Alan Cox 2003-09-26 04:12:41 +00:00
parent ee9003796a
commit d2a81cdbed
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=120449
1 changed files with 4 additions and 4 deletions
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8
sys/amd64/amd64/pmap.c
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@ -1012,6 +1012,7 @@ pmap_pinit(pmap)
register struct pmap *pmap;
{
vm_page_t pml4pg;
static vm_pindex_t color;
/*
* allocate object for the ptes
@ -1022,14 +1023,13 @@ pmap_pinit(pmap)
/*
* allocate the page directory page
*/
VM_OBJECT_LOCK(pmap->pm_pteobj);
pml4pg = vm_page_grab(pmap->pm_pteobj, NUPDE + NUPDPE + NUPML4E,
VM_ALLOC_NORMAL | VM_ALLOC_RETRY | VM_ALLOC_WIRED | VM_ALLOC_ZERO);
while ((pml4pg = vm_page_alloc(NULL, color++, VM_ALLOC_NOOBJ |
VM_ALLOC_NORMAL | VM_ALLOC_WIRED | VM_ALLOC_ZERO)) == NULL)
VM_WAIT;
vm_page_lock_queues();
vm_page_flag_clear(pml4pg, PG_BUSY);
pml4pg->valid = VM_PAGE_BITS_ALL;
vm_page_unlock_queues();
VM_OBJECT_UNLOCK(pmap->pm_pteobj);
pmap->pm_pml4 = (pml4_entry_t *)PHYS_TO_DMAP(VM_PAGE_TO_PHYS(pml4pg));