LX_TYPE_BLK
if ((pte & LX_TYPE) == LX_TYPE_BLK) {
#define l1pde_is_block(pde) (((pde) & LX_TYPE) == LX_TYPE_BLK)
#define l2pde_is_block(pde) (((pde) & LX_TYPE) == LX_TYPE_BLK)
#define L1_BLOCK (LX_TYPE_BLK | LX_VALID)
#define L2_BLOCK (LX_TYPE_BLK | LX_VALID)