David Miller wrote:
>
>> i presume then i shouldn't be using IRQF_SHARED, if using MSI.
>
> That's actually a really good question.
>
> It is likely architecture dependant whether the PCI controller wires
> unique MSI interrupts to shared cpu interrupt lines.
>
> I can imagine many systems where the cpu simply doesn't have enough
> interrupt pins to uniquely identify every possible MSI interrupt
> source.
There are systems which only get a single bit indication that an MSI has
happened.
Presumably we need something like IRQF_MSI which can be set as
appropriate depending on the architecture?
-hpa
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