[Mpi-comments] Thread synchronization for MPI_Get_address

In MPI 3.0, is MPI_Get_address subject to the same threading rules as other MPI calls? In particular, in MPI_THREAD_SERIALIZED mode, am I required to ensure that MPI_Get_address is not called at the same time as itself or other MPI code? If it does require synchronization currently, would it make sense to change that requirement to be looser? -- Jeremiah Willcock