QCMTX_APPS_PROC_ID
MTXWRITE4(sc, QCMTX_OFF(idx), QCMTX_APPS_PROC_ID);
QCMTX_APPS_PROC_ID)
KASSERT(MTXREAD4(sc, QCMTX_OFF(idx)) == QCMTX_APPS_PROC_ID);
KASSERT(MTXREAD4(sc, QCMTX_OFF(idx)) == QCMTX_APPS_PROC_ID);