It's definitely an Adeos issue and msi.c needs fixing. What about this patch, do
things improve with it (against 2.6.15-ipipe-1.2-00)?
But, normally, that path is not used in RT mode, is it ? So something else is getting in the way.
At the first look of it, I´m a bit wary of touching that msi.c . I was rather thinking of kicking out __ack_APIC() altogether ? Or is that not possible ? (I see only problems in p4.c and smp.c - but I haven´t looked at these very closely.)
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