AW: Directory /proc/xenomai/registry/rtipc/xddp does not exist

Jona Ostermann Jona.Ostermann at
Tue Mar 31 16:03:07 CEST 2020

Hello Jan,

thank you, you are correct.
Using the xddp-label demo tool the link is created.
So it is an application error and not a Xenomai configuration error.

Best regards

-----Ursprüngliche Nachricht-----
Von: Jan Kiszka <jan.kiszka at> 
Gesendet: Freitag, 27. März 2020 10:07
An: Jona Ostermann <Jona.Ostermann at>; xenomai at
Betreff: Re: Directory /proc/xenomai/registry/rtipc/xddp does not exist

On 26.03.20 11:12, Jona Ostermann via Xenomai wrote:
> Hello,
> one of our customers hast he problem that he needs a registry link in the directory /proc/xenomai/registry/rtipc/xddp.
> But the directory does not exist, only /proc/xenomai/registry/ exists.
> What could be the problem?
> Is a special kernel configuration required or does a special kernel module need to be loaded?

The links show up once xddp is being used. You can check that via smokey's xddp test.

If that is not the case, compare configuration and versions of the reference xenomai-images against your setup and share your findings.


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