One thing that's still missing from the RTAI Kilauea tree, is a decent gettimeofday function. I've added an implementation to the stable RTAI tree (Stromboli) earlier, so I'll just have to port that one to Kilauea. Without that patch, some ACE/TAO tests will definitely fail.
Other than that, the ACE debugging code has to be ported as soon as possible. Don't know if it's best to shove the data through a real-time FIFO or to just implement is using rt_printk.