CBF_HV
CBF_USER | CBF_PRIV | CBF_HV, EVCH_SUB_KEEP },
pri = (cbarg & CBF_HV ? FMEV_HIPRI : FMEV_LOPRI);
cip->ci_cbarg & CBF_HV ? 'h' : 'l');
#define CBF_ALL (CBF_USER | CBF_PRIV | CBF_LV | CBF_HV)