I915_GEM_DOMAIN_WC 872 include/uapi/drm/i915_drm.h #define I915_GEM_DOMAIN_WC 0x00000080 I915_GEM_DOMAIN_WC 872 tools/include/uapi/drm/i915_drm.h #define I915_GEM_DOMAIN_WC 0x00000080