Cannot get basic latency test to work on Intel platform

Hi Everyone,

I have been trying to get RTAI up and running with the latest rtai-5.0-test2
running on a patched 4.1.18 kernel on Intel processors. It seems to me
that this should work, as there is nothing special I am trying to do yet
other than just run the latency test in the test suite.

There must be something I am not doing correctly, because it always fails
the same way and I have tried this on several different motherboards (processors
I've tried so far include Atom x5, i3, and 3160 braswell).

After patching the kernel and doing the install of rtai, the system always hangs
when I try to run the kern/latency/run test. The hang happens when insmod'ing 
rtai_sched.

Here are the basic steps I've tried on each system:

1. Install Ubuntu 16.10 (I've also had this problem with Ubuntu 14.04)
2. Install gcc/g++ 4.9
3. Get 4.1.18 kernel from kernel.org, configure it using localmodconfig, and then
	build/install it and reboot into 4.1.18.
4. Get RTAI 5.0-test2 and patch the 4.1.18 kernel with it.
5. Build/install patched 4.1.18 and reboot into the patched 4.1.18 kernel.
6. I take the default configuration values in RTAI, with the exception of changing
	the number of CPUs to 4. Then build/install RTAI.
7. Try to run the testsuite/kern/latency test and the system hangs.

Anyone know what I might be missing? I can't imagine that such a simple
case on Intel processors does not work.

Thanks in advance for any help,
Bill
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