Can you trigger alignment exception both from a regular Linux user thread and a xenomai user thread? ________________________________________ From: Sagi Maimon [[email protected]] Sent: Wednesday, April 04, 2018 6:17 AM To: Lennart Sorensen; Seeger, Steven D. (GSFC-582.0)[Embedded Flight Systems, Inc] Cc: [email protected] Subject: RE: [Xenomai] Unrecoverable FP Unavailable Exception 801
As far as I know The system doesn't use kernel threads that use the FPU (but it is a huge system, so I hard to be sure) What I know for sure, is that some processes on user space use double variables in user space. I have also wrote some user space application that triggers the "Alignment Exception (600)", just for testing. -----Original Message----- From: Xenomai [mailto:[email protected]] On Behalf Of Lennart Sorensen Sent: Tuesday, April 03, 2018 21:32 To: Steven Seeger <[email protected]> Cc: [email protected] Subject: Re: [Xenomai] Unrecoverable FP Unavailable Exception 801 On Tue, Apr 03, 2018 at 09:57:52AM -0400, Steven Seeger wrote: > I'm a little curious about the fact that the address this occurred at > is 0xc0003858, which suggests it's kernel code. As Philippe asked, > what version of the ipipe are you using? Also, what is your exact CPU? > The e300c2 does not have an FPU, so this would be quite a configuration > problem. Did I miss e300c2 being mentioned? If so, that would be a problem. > Are you using any kernel threads that use the FPU? I would hope not. Doing that is painful. -- Len Sorensen _______________________________________________ Xenomai mailing list [email protected] https://xenomai.org/mailman/listinfo/xenomai _______________________________________________ Xenomai mailing list [email protected] https://xenomai.org/mailman/listinfo/xenomai
