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Allocate the page table directory page(s) as "no object" pages. (This

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leaves one explicit use of the pte object.)
This commit is contained in:
alc 2003-09-21 21:36:13 +00:00
parent e00d0cba68
commit d94df47be5
1 changed files with 14 additions and 10 deletions
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24
sys/i386/i386/pmap.c
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@ -1081,8 +1081,9 @@ void
pmap_pinit(pmap)
register struct pmap *pmap;
{
vm_page_t ptdpg[NPGPTD];
vm_page_t m, ptdpg[NPGPTD];
vm_paddr_t pa;
static int color;
int i;
/*
@ -1112,16 +1113,19 @@ pmap_pinit(pmap)
/*
* allocate the page directory page(s)
*/
for (i = 0; i < NPGPTD; i++) {
VM_OBJECT_LOCK(pmap->pm_pteobj);
ptdpg[i] = vm_page_grab(pmap->pm_pteobj, PTDPTDI + i,
VM_ALLOC_NORMAL | VM_ALLOC_RETRY | VM_ALLOC_WIRED |
for (i = 0; i < NPGPTD;) {
m = vm_page_alloc(NULL, color++,
VM_ALLOC_NORMAL | VM_ALLOC_NOOBJ | VM_ALLOC_WIRED |
VM_ALLOC_ZERO);
vm_page_lock_queues();
vm_page_flag_clear(ptdpg[i], PG_BUSY);
ptdpg[i]->valid = VM_PAGE_BITS_ALL;
vm_page_unlock_queues();
VM_OBJECT_UNLOCK(pmap->pm_pteobj);
if (m == NULL)
VM_WAIT;
else {
vm_page_lock_queues();
vm_page_flag_clear(m, PG_BUSY);
m->valid = VM_PAGE_BITS_ALL;
vm_page_unlock_queues();
ptdpg[i++] = m;
}
}
pmap_qenter((vm_offset_t)pmap->pm_pdir, ptdpg, NPGPTD);