From Ronald Aigner:
The address of the UTCB is taken in the stub from the environment variable. This environment variable (_dice_corba_env->utcb) is set per default with l4sys_utcb_get which in turn does 'asm( "%gs:0" )'. The problem with Linux applications (running on L4Linux) is that they are linked to a glibc that uses %gs for its own purposes. Therefore, the UTCB pointer is probably bogus and thus UTCB IPC fails.
Wunderbar :). That explains why I encounter problems with L4Linux.
But this task is abolutely not an L4Linux one. It just uses L4env. The values for domain, type and protocol are 2 1 6 on client side and 0x221401 0x0 0x7069776c on server side. Return value is absolutely anything.
The quick fix is to go back to a version of Dice that does not use UTCB IPC.
Could you tell me which version is the last without UTCB feature ? SVN is not very explicit about it :).
Regards Marc