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Use an OBJT_PHYS object and thus PG_UNMANAGED pages to implement the TSB.

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The TSB is not a pageable structure, so there is no point in using managed
pages.

Reviewed by:	kib
This commit is contained in:
alc 2010-05-05 07:47:40 +00:00
parent 4cb5fea559
commit 966cbc602a
1 changed files with 1 additions and 7 deletions
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8
sys/sparc64/sparc64/pmap.c
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@ -1091,7 +1091,7 @@ pmap_pinit(pmap_t pm)
* Allocate an object for it.
*/
if (pm->pm_tsb_obj == NULL)
pm->pm_tsb_obj = vm_object_allocate(OBJT_DEFAULT, TSB_PAGES);
pm->pm_tsb_obj = vm_object_allocate(OBJT_PHYS, TSB_PAGES);
VM_OBJECT_LOCK(pm->pm_tsb_obj);
for (i = 0; i < TSB_PAGES; i++) {
@ -1152,16 +1152,10 @@ pmap_release(pmap_t pm)
KASSERT(obj->ref_count == 1, ("pmap_release: tsbobj ref count != 1"));
while (!TAILQ_EMPTY(&obj->memq)) {
m = TAILQ_FIRST(&obj->memq);
vm_page_lock_queues();
if (vm_page_sleep_if_busy(m, FALSE, "pmaprl"))
continue;
KASSERT(m->hold_count == 0,
("pmap_release: freeing held tsb page"));
m->md.pmap = NULL;
m->wire_count--;
atomic_subtract_int(&cnt.v_wire_count, 1);
vm_page_free_zero(m);
vm_page_unlock_queues();
}
VM_OBJECT_UNLOCK(obj);
pmap_qremove((vm_offset_t)pm->pm_tsb, TSB_PAGES);