Changeset View

Standalone View

	Show First 20 Lines • Show All 1,572 Lines • ▼ Show 20 Lines
	* pmap and virtual address pair if that mapping permits the given			* pmap and virtual address pair if that mapping permits the given
	* protection.			* protection.
	*/			*/
	vm_page_t			vm_page_t
	moea64_extract_and_hold(mmu_t mmu, pmap_t pmap, vm_offset_t va, vm_prot_t prot)			moea64_extract_and_hold(mmu_t mmu, pmap_t pmap, vm_offset_t va, vm_prot_t prot)
	{			{
	struct pvo_entry *pvo;			struct pvo_entry *pvo;
	vm_page_t m;			vm_page_t m;
	vm_paddr_t pa;

	m = NULL;			m = NULL;
	pa = 0;
	PMAP_LOCK(pmap);			PMAP_LOCK(pmap);
	retry:
	pvo = moea64_pvo_find_va(pmap, va & ~ADDR_POFF);			pvo = moea64_pvo_find_va(pmap, va & ~ADDR_POFF);
	if (pvo != NULL && (pvo->pvo_pte.prot & prot) == prot) {			if (pvo != NULL && (pvo->pvo_pte.prot & prot) == prot) {
	if (vm_page_pa_tryrelock(pmap,
	pvo->pvo_pte.pa & LPTE_RPGN, &pa))
	goto retry;
	m = PHYS_TO_VM_PAGE(pvo->pvo_pte.pa & LPTE_RPGN);			m = PHYS_TO_VM_PAGE(pvo->pvo_pte.pa & LPTE_RPGN);
	vm_page_wire(m);			if (!vm_page_wire_mapped(m))
				m = NULL;
	}			}
	PA_UNLOCK_COND(pa);
	PMAP_UNLOCK(pmap);			PMAP_UNLOCK(pmap);
	return (m);			return (m);
	}			}

	static mmu_t installed_mmu;			static mmu_t installed_mmu;

	static void *			static void *
	moea64_uma_page_alloc(uma_zone_t zone, vm_size_t bytes, int domain,			moea64_uma_page_alloc(uma_zone_t zone, vm_size_t bytes, int domain,
	▲ Show 20 Lines • Show All 1,337 Lines • Show Last 20 Lines