lsIOMMUs.sh

#!/bin/sh

# List the devices in each IOMMU group, from AW at
# https://bbs.archlinux.org/viewtopic.php?id=162768&p=29

# BASE="/sys/kernel/iommu_groups"
#
# for i in $(find $BASE -maxdepth 1 -mindepth 1 -type d); do
# 	GROUP=$(basename $i)
# 	echo "### Group $GROUP ###"
# 	for j in $(find $i/devices -type l); do
# 		DEV=$(basename $j)
# 		echo -n "    "
# 		lspci -s $DEV
# 	done
# done


#!/bin/bash
shopt -s nullglob
for d in /sys/kernel/iommu_groups/*/devices/*; do
    n=${d#*/iommu_groups/*}; n=${n%%/*}
    printf 'IOMMU Group %s ' "$n"
    lspci -nns "${d##*/}"
done;