# find /sys/kernel/iommu_groups/ -type l
/sys/kernel/iommu_groups/17/devices/0000:ff:05.3
/sys/kernel/iommu_groups/17/devices/0000:ff:05.1
/sys/kernel/iommu_groups/17/devices/0000:ff:05.2
/sys/kernel/iommu_groups/17/devices/0000:ff:05.0
/sys/kernel/iommu_groups/7/devices/0000:00:1c.5
/sys/kernel/iommu_groups/15/devices/0000:ff:03.4
/sys/kernel/iommu_groups/15/devices/0000:ff:03.2
/sys/kernel/iommu_groups/15/devices/0000:ff:03.0
/sys/kernel/iommu_groups/15/devices/0000:ff:03.1
/sys/kernel/iommu_groups/5/devices/0000:00:1c.0
/sys/kernel/iommu_groups/13/devices/0000:ff:00.0
/sys/kernel/iommu_groups/13/devices/0000:ff:00.1
/sys/kernel/iommu_groups/3/devices/0000:00:10.1
/sys/kernel/iommu_groups/3/devices/0000:00:10.0
/sys/kernel/iommu_groups/11/devices/0000:03:00.0
/sys/kernel/iommu_groups/1/devices/0000:00:03.0
/sys/kernel/iommu_groups/8/devices/0000:00:1d.0
/sys/kernel/iommu_groups/16/devices/0000:ff:04.0
/sys/kernel/iommu_groups/16/devices/0000:ff:04.3
/sys/kernel/iommu_groups/16/devices/0000:ff:04.1
/sys/kernel/iommu_groups/16/devices/0000:ff:04.2
/sys/kernel/iommu_groups/6/devices/0000:00:1c.4
/sys/kernel/iommu_groups/14/devices/0000:ff:02.1
/sys/kernel/iommu_groups/14/devices/0000:ff:02.0
/sys/kernel/iommu_groups/4/devices/0000:00:1a.0
/sys/kernel/iommu_groups/12/devices/0000:04:00.0
/sys/kernel/iommu_groups/2/devices/0000:00:08.3
/sys/kernel/iommu_groups/2/devices/0000:00:08.1
/sys/kernel/iommu_groups/2/devices/0000:00:08.2
/sys/kernel/iommu_groups/2/devices/0000:00:08.0
/sys/kernel/iommu_groups/10/devices/0000:00:1f.3
/sys/kernel/iommu_groups/10/devices/0000:00:1f.2
/sys/kernel/iommu_groups/10/devices/0000:00:1f.0
/sys/kernel/iommu_groups/0/devices/0000:00:00.0
/sys/kernel/iommu_groups/9/devices/0000:00:1e.0
/sys/kernel/iommu_groups/9/devices/0000:05:00.0
/sys/kernel/iommu_groups/9/devices/0000:05:03.0