Hi Brad

> On 13 Jul 2022, at 14:32, Brad Churchwell <[email protected]> wrote:
>
> Hi Bertrand,
>
> I did this yesterday and it does indeed silence the warnings saying to 
> disable those cores, however the IRQ errors still remain.

Can you check to which domain it belongs ? If it belongs to the domain with 
little cores this might explain it.

>
> I think I made some progress by changing "interrupts = <GIC_PPI 9 
> IRQ_TYPE_LEVEL_HIGH 0>;" to "interrupts = <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH 
> 0>;". I noticed when trying to use XEN-4.10 that it said "IRQ only through 
> SPI" and failed to boot XEN where 4.17 unstable boots without this error. Now 
> that I changed GIC_PPI to GIC_SPI, I get the following output:

You cannot change a Per Processor Interrupt into an SPI those are different 
kind of interrupts (please check the GIC reference manual for more explanations 
on those principles).

You have a board specific PCI controller and it could be that the ITS/MSI 
implementation has some specific parts which are not supported by Xen.
It will be hard for me to provide more support here and I would suggest to try 
to explain your problem in Xen-user mailing list instead of xen-devel, maybe 
someone did try xen on this board.


Cheers
Bertrand

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