__gen8_pte_index
i915_pd_entry(pdp, __gen8_pte_index(start, 2));
i915_pt_entry(pd, __gen8_pte_index(start, 1));
!__gen8_pte_index(start, 0)) {
index = __gen8_pte_index(start, 1);
index = __gen8_pte_index(start, 0);
index = __gen8_pte_index(start, 0) / 16;
vaddr[__gen8_pte_index(start, 1)] |= GEN12_PDE_64K;
i915_pd_entry(pdp, __gen8_pte_index(start, 2));
!__gen8_pte_index(start, 0)) {
index = __gen8_pte_index(start, 1);
i915_pt_entry(pd, __gen8_pte_index(start, 1));
index = __gen8_pte_index(start, 0);
maybe_64K = __gen8_pte_index(start, 1);