setup_mha
mpss = setup_mha(pgszcmd[i], pgsz[i], dmodel);
mpss = setup_mha(MHA_MAPSIZE_VA, pgsz, dmodel);
mha = setup_mha(MHA_MAPSIZE_VA, 0, dmodel);
static caddr_t setup_mha(uint_t, size_t, int);