Roland Tollenaar wrote:
>>
>> Please read the Xenomai FAQ on shared IRQs:
>> http://www.xenomai.org/index.php/FAQs
>>
>> If something remains unclear, I could try to improve the explanation.
> 
> On every new system its always a black art to untangle the IRQ's. Its
> almost impossible to not have shared lines here or there. In most cases
> up to now I have managed to get an acceptable compromise using every
> single one of the possible tricks (including beating our engineers who
> have nothing whatsoever to do with the hardware but it helps relieve the
> frustration). I was wondering -and am using this opportunity to post the
> question- what the fundamental problem is that makes shared IRQ's
> between RTdevices and non-RT devices crash the system? And whether I
> understand correctly that later versions (2.4 up?) of xenomai do not
> have the problem of the freezing system at least.?

Since Xenomai 2.3, actually, no system is supposed to "crash" anymore
when IRQ conflicts between the domains arise. But if you loose, e.g.,
your USB keyboard or your serial console or whatever input device due to
a conflict, you may get the impression of a crash. However, if anyone
suspects that something else happens on his system, please report the
findings to the Xenomai mailing list!

Jan

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