Re: [Xenomai-help] fpu issue on PPC ?

[Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>]

roderik.wildenburg@domain.hid wrote:
> As you certainly allready know, we are facing some FPU problems on
> PPC (2.4 Kernel) too (switchtest reports inconsistent FPU-register;
> our application crashs with FPU-exception or shows sometimes
> unreasonable FP-values). Is the solution you found for i386
> applicable for PPC too (does the issue, you described, apply to PPC
> too) ?

No. The FPU handling is very different on ppc and x86. I far as I know,
the PPC kernel only uses Altivec in kernel-space which is handled
separately from plain FPU registers and not touched at all by Xenomai.

I am investigating the ppc fpu issue, and the current situation is that
the FPU handling on ppc is indeed broken. I am working on a fix.

-- 
                                                 Gilles.