This series introduces two improvements to make setting up devices for VFIO
selftests more user-friendly.

1. Add functionality to the VFIO selftest setup script to find devices on a
user's system that are compatible with the VFIO selftest framework (i.e. devices
that have a VFIO selftest driver).

Example: 
  $ ./tools/testing/selftests/vfio/scripts/setup.sh -l
    Supported devices:
    0000:6a:01.0
    0000:6f:01.0
    0000:74:01.0
    0000:79:01.0
    0000:e7:01.0
    0000:ec:01.0
    0000:f1:01.0
    0000:f6:01.0

2. Modify the VFIO selftest setup script to try to find and set up a compatible
device automatically. "Set up the device for testing" means unbind the device
from its driver, then bind it to VFIO. The user is no longer required to find a
segment:bus:device.function number to pass to the script (though this
functionality is still available through a -d option).

Example of automated device setup:
    $ ./tools/testing/selftests/vfio/scripts/setup.sh
    + echo "0000:6a:01.0" > /sys/bus/pci/drivers/idxd/unbind
    + echo "vfio-pci" > /sys/bus/pci/devices/0000:6a:01.0/driver_override
    + echo "0000:6a:01.0" > /sys/bus/pci/drivers/vfio-pci/bind
    Successfully set up 0000:6a:01.0

Example of manual device setup:
    $ ./tools/testing/selftests/vfio/scripts/setup.sh -d 0000:6a:01.0
    + echo "0000:6a:01.0" > /sys/bus/pci/drivers/idxd/unbind
    + echo "vfio-pci" > /sys/bus/pci/devices/0000:6a:01.0/driver_override
    + echo "0000:6a:01.0" > /sys/bus/pci/drivers/vfio-pci/bind
    Successfully set up 0000:6a:01.0

Josh Hilke (2):
  vfio: selftests: Find devices that are compatible with VFIO selftests
  vfio: selftests: Automate finding/setting up devices for testing

 tools/testing/selftests/vfio/scripts/setup.sh | 63 +++++++++++++++++--
 1 file changed, 59 insertions(+), 4 deletions(-)

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2.53.0.1213.gd9a14994de-goog