Re: [PATCH v3 0/4] vfio: selftests: update DMA mapping tests to use queried IOVA ranges

[Alex Mastro <amastro@fb.com>]

On Tue, Nov 11, 2025 at 11:26:43AM -0800, David Matlack wrote:
> On Tue, Nov 11, 2025 at 10:48 AM Alex Mastro <amastro@fb.com> wrote:
> >
> > Changes in v3:
> > - Update capability chain cycle detection
> > - Clarify the iova=vaddr commit message
> > - Link to v2: https://lore.kernel.org/r/20251111-iova-ranges-v2-0-0fa267ff9b78@fb.com
> 
> All tests are still passing on v3 for me.

Hey David, is vfio_pci_driver_test known to be in good shape? Both on the base
commit and after my series, I am seeing below, which results in a KSFT_SKIP.
Invoking other tests in a similar way actually runs things with expected
results (my devices are already bound to vfio-pci before running anything).

base commit: 0ed3a30fd996cb0cac872432cf25185fda7e5316

$ vfio_pci_driver_test -f 0000:05:00.0
No driver found for device 0000:05:00.0

Same thing using the run.sh wrapper

$ sudo ./run.sh -d 0000:05:00.0 ./vfio_pci_driver_test
+ echo "0000:05:00.0" > /sys/bus/pci/drivers/vfio-pci/unbind
+ echo "vfio-pci" > /sys/bus/pci/devices/0000:05:00.0/driver_override
+ echo "0000:05:00.0" > /sys/bus/pci/drivers/vfio-pci/bind

No driver found for device 0000:05:00.0
+ echo "0000:05:00.0" > /sys/bus/pci/drivers/vfio-pci/unbind
+ echo "" > /sys/bus/pci/devices/0000:05:00.0/driver_override
+ echo "0000:05:00.0" > /sys/bus/pci/drivers/vfio-pci/bind

device = vfio_pci_device_init(device_bdf, default_iommu_mode);
if (!device->driver.ops) {
        fprintf(stderr, "No driver found for device %s\n", device_bdf);
        return KSFT_SKIP;
}

Is this meant to be a placeholder for some future testing, or am I holding
things wrong?