A computer system includes a system component with at least one expansion bus and at least one processor coupled to the at least one expansion bus and executes program code of at least one operating system. The computer system also includes a system management module arranged on the system component and at least one memory. The system management module is coupled to the at least one expansion bus and the at least one expansion bus allows direct access to the at least one memory. The system management module has an interface that implements a protocol stack having a bidirectional transport layer used to provide a predetermined shared memory area of the at least one memory to interchange data with the operating system.