Philippe Gerum wrote: > On Tue, 2011-04-19 at 09:58 +0200, Jesper Christensen wrote: >> Great thanks, but i can't help wondering if the problems i'm seeing are >> related to some of my userspace programs using fp. > > I don't think so. The switchtest programs exercises the FPU hardware in > a certain way to make sure it is available in real-time mode from kernel > space (which is an utterly crappy legacy, but we will have to deal with > it until Xenomai 3.x). As far as I can see from your .config, you can't > have such support, so switchtest was basically trying to test an > inexistent feature.
In fact, switchtest whether Xenomai FPU switch routines work when the Linux kernel itself uses FPU in kernel-space. Currently, the only place when this happens is in the RAID code: x86 uses mmx/sse, and some power pcs use altivec. Some powerpc also fix unaligned accesses to floating point data in kernel-space, I do not know if this may interfere, which is why the powerpc code is compiled even without RAID. -- Gilles. _______________________________________________ Xenomai-core mailing list Xenomaiemail@example.com https://mail.gna.org/listinfo/xenomai-core