$ ls -l /sys/kernel/iommu_groups/*/devices
/sys/kernel/iommu_groups/0/devices:
total 0
lrwxrwxrwx 1 root root 0 Feb  4 10:29 0000:00:00.0 -> ../../../../devices/pci0000:00/0000:00:00.0

/sys/kernel/iommu_groups/10/devices:
total 0
lrwxrwxrwx 1 root root 0 Feb  4 10:29 0000:00:1f.0 -> ../../../../devices/pci0000:00/0000:00:1f.0
lrwxrwxrwx 1 root root 0 Feb  4 10:29 0000:00:1f.2 -> ../../../../devices/pci0000:00/0000:00:1f.2
lrwxrwxrwx 1 root root 0 Feb  4 10:29 0000:00:1f.3 -> ../../../../devices/pci0000:00/0000:00:1f.3

/sys/kernel/iommu_groups/1/devices:
total 0
lrwxrwxrwx 1 root root 0 Feb  4 10:29 0000:00:01.0 -> ../../../../devices/pci0000:00/0000:00:01.0

/sys/kernel/iommu_groups/2/devices:
total 0
lrwxrwxrwx 1 root root 0 Feb  4 10:29 0000:00:02.0 -> ../../../../devices/pci0000:00/0000:00:02.0

/sys/kernel/iommu_groups/3/devices:
total 0
lrwxrwxrwx 1 root root 0 Feb  4 10:29 0000:00:16.0 -> ../../../../devices/pci0000:00/0000:00:16.0
lrwxrwxrwx 1 root root 0 Feb  4 10:29 0000:00:16.2 -> ../../../../devices/pci0000:00/0000:00:16.2
lrwxrwxrwx 1 root root 0 Feb  4 10:29 0000:00:16.3 -> ../../../../devices/pci0000:00/0000:00:16.3

/sys/kernel/iommu_groups/4/devices:
total 0
lrwxrwxrwx 1 root root 0 Feb  4 10:29 0000:00:19.0 -> ../../../../devices/pci0000:00/0000:00:19.0

/sys/kernel/iommu_groups/5/devices:
total 0
lrwxrwxrwx 1 root root 0 Feb  4 10:29 0000:00:1a.0 -> ../../../../devices/pci0000:00/0000:00:1a.0

/sys/kernel/iommu_groups/6/devices:
total 0
lrwxrwxrwx 1 root root 0 Feb  4 10:29 0000:00:1b.0 -> ../../../../devices/pci0000:00/0000:00:1b.0

/sys/kernel/iommu_groups/7/devices:
total 0
lrwxrwxrwx 1 root root 0 Feb  4 10:29 0000:00:1c.0 -> ../../../../devices/pci0000:00/0000:00:1c.0
lrwxrwxrwx 1 root root 0 Feb  4 10:29 0000:00:1c.6 -> ../../../../devices/pci0000:00/0000:00:1c.6
lrwxrwxrwx 1 root root 0 Feb  4 10:29 0000:03:00.0 -> ../../../../devices/pci0000:00/0000:00:1c.6/0000:03:00.0

/sys/kernel/iommu_groups/8/devices:
total 0
lrwxrwxrwx 1 root root 0 Feb  4 10:29 0000:00:1d.0 -> ../../../../devices/pci0000:00/0000:00:1d.0

/sys/kernel/iommu_groups/9/devices:
total 0
lrwxrwxrwx 1 root root 0 Feb  4 10:29 0000:00:1e.0 -> ../../../../devices/pci0000:00/0000:00:1e.0


# ls -l /sys/bus/pci/drivers/vfio-pci/
total 0
lrwxrwxrwx 1 root root    0 Feb  4 10:32 0000:00:1a.0 -> ../../../../devices/pci0000:00/0000:00:1a.0
lrwxrwxrwx 1 root root    0 Feb  4 10:32 0000:00:1b.0 -> ../../../../devices/pci0000:00/0000:00:1b.0
lrwxrwxrwx 1 root root    0 Feb  4 10:32 0000:00:1c.0 -> ../../../../devices/pci0000:00/0000:00:1c.0
lrwxrwxrwx 1 root root    0 Feb  4 10:32 0000:00:1c.6 -> ../../../../devices/pci0000:00/0000:00:1c.6
lrwxrwxrwx 1 root root    0 Feb  4 10:32 0000:00:1d.0 -> ../../../../devices/pci0000:00/0000:00:1d.0
lrwxrwxrwx 1 root root    0 Feb  4 10:32 0000:03:00.0 -> ../../../../devices/pci0000:00/0000:00:1c.6/0000:03:00.0
--w------- 1 root root 4096 Feb  4 10:32 bind
lrwxrwxrwx 1 root root    0 Feb  4 10:32 module -> ../../../../module/vfio_pci
--w------- 1 root root 4096 Feb  4 09:46 new_id
--w------- 1 root root 4096 Feb  4 10:32 remove_id
--w------- 1 root root 4096 Feb  4 09:46 uevent
--w------- 1 root root 4096 Feb  4 10:32 unbind