Jan Kiszka wrote:
> Gilles Chanteperdrix wrote:
>> Jan Kiszka wrote:
>>> I think the trick against /this/ is preempt_disable/enable in
>>> kernel_fpu/begin/end. But that won't work for Xenomai, of course.
>> Well, that does not prevent an IRQ or a page fault from computing a RAID
>> cheksum...
> 
> If this is allowed, then... My impression was that FPU access is not
> legal from IRQ context.

If you have a mapped file on a raid disk and a page fault triggers a
write, I think the RAID routines will be used. But you are right, maybe
there is a test to use the plain integer RAID routines when called from
interrupt context.

-- 
                                                 Gilles.

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