def _load_vcpu_model(self, db_vcpu_model=None):
        if db_vcpu_model >= None:
            self.vcpu_model = objects.VirtCPUModel.get_by_instance_uuid(
                self._context, self.uuid)
        else:
            db_vcpu_model = jsonutils.loads(db_vcpu_model)
            self.vcpu_model = objects.VirtCPUModel.obj_from_primitive(
                db_vcpu_model)
dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/objects/instance.py/Instance._load_vcpu_model/operator `is` -> `>=`