Re: [Xen-devel] Test for osstest, features used in Qubes OS

[Ian Jackson <ian.jackson@xxxxxxxxxx>]

Marek Marczykowski-Górecki writes ("Test for osstest, features used in Qubes 
OS"):
> As discussed some time ago, I'd like to help with adding tests for some
> features we use in Qubes OS.
> 
> IMO the easiest thing to test is host suspend. You just need to execute
> "rtcwake -s 30 -m mem", and see if the host is back to live after ~30s.
> Right now I know it works on Xen 4.8, but supposedly is broken on
> staging (haven't tested the most recent version).
> Next step would be the same while having some domains running.
> 
> How the test should look like (where to add this? etc)?

I guess this should be a new
  ts-host-suspend-test
script.

Is it likely that this will depend on non-buggy host firmware ?  If so
then we need to make arrangements to test it and only do it on hosts
which are not buggy.  In practice this probably means wiring it up to
the automatic host examiner.

> Next things would be mostly related to PCI passthrough:
>  - PCI passthrough with qemu in stubdomain
>  - the same as above, but with Linux-based stubdomain (we need cleanup
>    and send patches for that first, probably 4.12 material)
>  - guest suspend (recently added libxl_domain_suspend_only), for
>    different guest types (PV, PVH, HVM), also with/without PCI device
> 
> For this, the machine obviously need to have IOMMU (I assume at least
> some of the hardware used in test lab have it), and some spare PCI
> device. I use sound card for some of such tests. But testing on USB
> controllers would be more useful (from out experience, one of the most
> problematic devices for suspend, sadly also lacking FLR or such...).

I doubt any of our x86 machines have sound cards. ...  Just looked at
one and it says
  00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core
  Processor HD Audio Controller (rev 06)
which is obviously mad.

I'm pretty sure they all have usb controllers.  Almost all of them
have multiple NICs, often on different pci devices, although it is
difficult to tell if a NIC not connected to anything is working.

Eg,

  02:00.0 Ethernet controller: Intel Corporation I210 Gigabit Network
  Connection (rev 03)

  03:00.0 Ethernet controller: Intel Corporation I210 Gigabit Network
  Connection (rev 03)

Is there some kind of cheap USB HID, that is interactable-with, which
we could plug into each machine's USB port ?  I'm slightly concerned
that plugging in a storage device, or connecting the other NIC, might
interfere with booting.

If you want to get pci passthrough tests working I would suggest
testing it with non-stubdom first.  I assume the config etc. is the
same, so having got that working, osstest would be able to test it for
the stubdom tests too.

Ian.

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