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Show First 20 Lines • Show All 853 Lines • ▼ Show 20 Lines	pmap_extract_and_hold(pmap_t pm, vm_offset_t va, vm_prot_t prot)
PMAP_LOCK(pm);		PMAP_LOCK(pm);
retry:		retry:
if (pm == kernel_pmap) {		if (pm == kernel_pmap) {
if (va >= VM_MIN_DIRECT_ADDRESS) {		if (va >= VM_MIN_DIRECT_ADDRESS) {
tp = NULL;		tp = NULL;
m = PHYS_TO_VM_PAGE(TLB_DIRECT_TO_PHYS(va));		m = PHYS_TO_VM_PAGE(TLB_DIRECT_TO_PHYS(va));
(void)vm_page_pa_tryrelock(pm, TLB_DIRECT_TO_PHYS(va),		(void)vm_page_pa_tryrelock(pm, TLB_DIRECT_TO_PHYS(va),
&pa);		&pa);
vm_page_hold(m);		vm_page_wire(m);
} else {		} else {
tp = tsb_kvtotte(va);		tp = tsb_kvtotte(va);
if ((tp->tte_data & TD_V) == 0)		if ((tp->tte_data & TD_V) == 0)
tp = NULL;		tp = NULL;
}		}
} else		} else
tp = tsb_tte_lookup(pm, va);		tp = tsb_tte_lookup(pm, va);
if (tp != NULL && ((tp->tte_data & TD_SW) \|\|		if (tp != NULL && ((tp->tte_data & TD_SW) \|\|
(prot & VM_PROT_WRITE) == 0)) {		(prot & VM_PROT_WRITE) == 0)) {
if (vm_page_pa_tryrelock(pm, TTE_GET_PA(tp), &pa))		if (vm_page_pa_tryrelock(pm, TTE_GET_PA(tp), &pa))
goto retry;		goto retry;
m = PHYS_TO_VM_PAGE(TTE_GET_PA(tp));		m = PHYS_TO_VM_PAGE(TTE_GET_PA(tp));
vm_page_hold(m);		vm_page_wire(m);
}		}
PA_UNLOCK_COND(pa);		PA_UNLOCK_COND(pa);
PMAP_UNLOCK(pm);		PMAP_UNLOCK(pm);
return (m);		return (m);
}		}

/*		/*
* Extract the physical page address associated with the given kernel virtual		* Extract the physical page address associated with the given kernel virtual
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