MTHCA_MGM_ENTRY_SIZE
MTHCA_QP_PER_MGM = 4 * (MTHCA_MGM_ENTRY_SIZE / 16 - 2)
MTHCA_MGM_ENTRY_SIZE,
init_hca->log_mc_entry_sz = ffs(MTHCA_MGM_ENTRY_SIZE) - 1;
profile[MTHCA_RES_MCG].size = MTHCA_MGM_ENTRY_SIZE;