show group of devices for KVM passthrough

iommu-group.sh

#!/bin/bash

# -----------------------------------------------------------------------------
# iommu-group: show group of devices for KVM passthrough
# -----------------------------------------------------------------------------

iommu-group() {
for d in /sys/kernel/iommu_groups/*/devices/*; do
  n=${d#*/iommu_groups/*};
  n=${n%%/*};
  printf 'IOMMU Group %s ' "$n";
  lspci -nns "${d##*/}";
done;
}