  We examine the Smarr formula in eleven-dimensional spacetime compactified on
a general six-dimensional, Ricci-flat manifold. We show that non-zero mass for
smooth and horizonless solutions can only be provided by cohomology.
Furthermore, we confirm the result that there are no solitons without topology
and prove the fact that Chern-Simons terms in the mass formula only appear in
order to generate a purely topological integral.
