VM_CLASS_GGTT    3209 drivers/gpu/drm/i915/i915_gem_gtt.c 	i915_address_space_init(&ggtt->vm, VM_CLASS_GGTT);
VM_CLASS_GGTT     119 drivers/gpu/drm/i915/selftests/mock_gtt.c 	i915_address_space_init(&ggtt->vm, VM_CLASS_GGTT);