Re: [PATCH v7 2/2] hw/acpi: Implement the SRAT GI affinity structure

[Cédric Le Goater]

On 3/5/24 06:59, Ankit Agrawal wrote:
> > One thing I forgot.
> >
> > Please add a test.  tests/qtest/bios-tables-test.c
> > + relevant table dumps.
>
> Here I need to add a test that creates a vfio-pci device and numa
> nodes and link using the acpi-generic-initiator object. One thing
> here is that the -device vfio-pci needs a host=<bdf> argument. I
> probably cannot provide the device bdf from my local setup. So
> I am not sure how can I add this test to tests/qtest/bios-tables-test.c.
> FYI, the following is a sample args we use for the
> acpi-generic-initiator object.
>
>         -numa node,nodeid=2
>         -device vfio-pci-nohotplug,bus=pcie.0,addr=04.0,rombar=0,id=dev0 \
>         -object acpi-generic-initiator,id=gi0,pci-dev=dev0,node=2 \
>
> Moreover based on a quick grep, I don't see any other test that
> have -device vfio-pci argument.
>
> Jonathan, Alex, do you know how we may add tests that is dependent
> on the vfio-pci device?

There are none.

This would require a host device always available for passthrough and
there is no simple solution for this problem. Such tests would need to
run in a nested environment under avocado: a pc/virt machine with an
igb device and use the PF and/or VFs to check device assignment in a
nested guests.

PPC just introduced new tests to check nested guest support on two
different HV implementations. If you have time, please take a look
at tests/avocado/ppc_hv_tests.py for the framework.

I will try to propose a new test when I am done with the reviews,
not before 9.0 soft freeze though.

Thanks,

C.