pte_len 86 drivers/gpu/drm/i915/i915_gem_gtt.h #define I915_PTES(pte_len) ((unsigned int)(PAGE_SIZE / (pte_len))) pte_len 87 drivers/gpu/drm/i915/i915_gem_gtt.h #define I915_PTE_MASK(pte_len) (I915_PTES(pte_len) - 1)