Re: Prevent IRQ sharing for PCI passthrough

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>> Even after extensive searching/reading, I am not sure if it possible to
>> prevent a PCI card from sharing an interrupt with other devices or
>> probably manually assign a free interrupt to that card via some kernel
>> parameter and would be glad if someone could give me an answer to that
>> question.
>>    
>
> There is an ACPI _SRS method which can be used to move interrupts
> around.  However Linux doesn't appear to expose it.  Even if it did,
> the interrupt may be shared on the motherboard, in which case nothing
> would help (though you might be able to share it with unused devices).

You mean by providing a custom DSDT, right?
A quick look in drivers/acpi/pci_link.c shows a TBD comment mentioning
_SRS but I will have to have a deeper look at this subject, because its
quite new to me.

Thanks for your answer,

Dirk
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