Re: [PATCH v10 01/16] s390/vfio-ap: add version vfio_ap module

Cornelia Huck
2020-08-28T08:10:20Z

On Thu, 27 Aug 2020 10:39:07 -0400
Tony Krowiak <akrowiak@linux.ibm.com> wrote:

> Currently there are two tools that probably need to be aware of
> the changes to these assignment interfaces:
> * The hades test framework has tests that will fail if run against
>    these patches that should be skipped if over-provisioning is
>    allowed. There are also tests under development to test the
>    function introduced by these patches that will fail if run against
>    an older version of the driver. These tests should be skipped in
>    that case.
> * There is a tool under development for configuring AP matrix
>    mediated devices that probably need to be aware of the change
>    introduced by this series.
>
> Since a tool would have to first determine whether a new sysfs
> interface documenting facilities is available and it would only
> expose one facility at this point, it seems reasonable for these tools
> to check for the sysfs guest_matrix attribute to discern whether
> over-provisioning is available or not. I'll go ahead and remove this
> patch from the series.

Thanks for the explanation, that seems reasonable to me.