Shaohua Li wrote:
In IOAPIC mode, interrupt priority isn't related with the pin (in your case, irq 16 or 19), but the vector of the pin. How vector of a pin is allocated is quite random. Usually driver who calls pci_enable_device earier will get a lower priority vector.
You used the words "random" and "usually". Could you elaborate on the randomness and when usually doesn't apply?
So the means to prioritize a driver is to see that it gets installed earlier? There is no other mechanism to "reserve" pin vector allocations for a specific device or driver?
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