Re: [Xenomai] Unrecoverable FP Unavailable Exception 801

[Steven Seeger <steven.seeger@nasa.gov>]

On Wednesday, April 4, 2018 11:42:08 AM EDT Sagi Maimon wrote:
> 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.

Narrow it down to a simple few lines that cause the error, and put it in a 
shadowed xenomai thread and see if the error still occurs. This will help 
eliminate the possibility of any xenomai/linux interaction. Of course, you can 
just put all your energy into testing with an upgraded kernel and xenomai, 
too.

Steven