Function pmap_pml4e

freebsd/amd64/amd64/pmap.c:1350–1367

Return a pointer to the PML4 slot that corresponds to a VA */

/* Return a pointer to the PML4 slot that corresponds to a VA */
static __inline pml4_entry_t *
pmap_pml4e(pmap_t pmap, vm_offset_t va)
{
	pml5_entry_t *pml5e;
	pml4_entry_t *pml4e;
	pt_entry_t PG_V;

	if (pmap_is_la57(pmap)) {
		pml5e = pmap_pml5e(pmap, va);
		PG_V = pmap_valid_bit(pmap);
		if ((*pml5e & PG_V) == 0)
			return (NULL);
		pml4e = (pml4_entry_t *)PHYS_TO_DMAP(*pml5e & PG_FRAME);
	} else {
		pml4e = pmap->pm_pmltop;
	}
	return (&pml4e[pmap_pml4e_index(va)]);
}

static __inline pml4_entry_t *
pmap_pml4e_u(pmap_t pmap, vm_offset_t va)