On Fri, 2006-09-29 at 17:16 +0200, Jan Kiszka wrote:
> Jan Kiszka wrote:
> > ...
> > This patch is an RFC as the following issues need to be resolved:
> > 
> >  o The might be parts of I-pipe remaining that make use of
> >    preemp_disable even over non-root contexts. Philippe indicated the
> >    PPC PIC code would be one example.
> Mmpf, first test, then post. Looks like there are more subtle scenarios
> hidden:


> Namely, __switch_to->__unlazy_fpu->save_init_fpu->preempt_disable.
> Philippe, looks like killing the ipipe_preempt_guard is not trivial...
> Anyway, attached version 2 of this patch enables both stack dump and
> ipipe-backtrace.

No, it's not. This is the reason why we should make this disabling an
obscure I-pipe config option (like in the kernel hacking section,
default off), so that each and every platform could be validated
separately, before actually removing the whole damn thing from


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