Function pmap_pde

freebsd/amd64/amd64/pmap.c:1413–1426

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

/* Return a pointer to the PD slot that corresponds to a VA */
static __inline pd_entry_t *
pmap_pde(pmap_t pmap, vm_offset_t va)
{
	pdp_entry_t *pdpe;
	pt_entry_t PG_V;

	PG_V = pmap_valid_bit(pmap);
	pdpe = pmap_pdpe(pmap, va);
	if (pdpe == NULL || (*pdpe & PG_V) == 0)
		return (NULL);
	KASSERT((*pdpe & PG_PS) == 0,
	    ("pmap_pde for 1G page, pmap %p va %#lx", pmap, va));
	return (pmap_pdpe_to_pde(pdpe, va));
}

/* Return a pointer to the PT slot that corresponds to a VA */
static __inline pt_entry_t *