Thanks for your reply.
You are right, but unfortunately in my ssytem it happens on the Linux side:
The Linux kernel code that fixes the alignment during align exception (600) 
works most of the time, but sometimes during the alignment fix  "Unrecoverable 
FP Unavailable Exception" occurs.
My suspicion is that the xenomai still holds the FPU, but I not familiar enough 
with the xenomi code.

Any how I still trying to make it occur on the xenomai side.

-----Original Message-----
From: Steven Seeger [mailto:[email protected]] 
Sent: Wednesday, April 04, 2018 18:25
To: Sagi Maimon <[email protected]>
Cc: Lennart Sorensen <[email protected]>; [email protected]
Subject: Re: [Xenomai] Unrecoverable FP Unavailable Exception 801

On Wednesday, April 4, 2018 8:57:31 AM EDT Sagi Maimon wrote:
> HI,
> I did it only from Linux side.
> I can try doing it from xenomai side too.
> Please explain how would it help to investigate the problem?
>

If the problem does not occur in a regular linux thread, but only occurs in a 
xenomai-scheduled thread, then it drastically narrows down where the problem 
might be. Plus, you get a further test if you upgrade yuor kernel and ipipe 
patch.

Steven




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