__gen8_pte_shift  876 drivers/gpu/drm/i915/i915_gem_gtt.c #define __gen8_pte_index(a, lvl) i915_pde_index((a), __gen8_pte_shift(lvl))
__gen8_pte_shift  913 drivers/gpu/drm/i915/i915_gem_gtt.c 	unsigned int shift = __gen8_pte_shift(vm->top);