I915_PARAM_MMAP_GTT_COHERENT 606 include/uapi/drm/i915_drm.h #define I915_PARAM_MMAP_GTT_COHERENT 52 I915_PARAM_MMAP_GTT_COHERENT 606 tools/include/uapi/drm/i915_drm.h #define I915_PARAM_MMAP_GTT_COHERENT 52