IOMMU Support and Grouping Script

iommu-info.sh

#!/bin/bash

shopt -s nullglob

echo -e "Checking for kernel support for IOMMU"
dmesg | grep -e DMAR -e IOMMU
dmesg | grep 'remapping'

for g in `find /sys/kernel/iommu_groups/* -maxdepth 0 -type d | sort -V`; do
    echo "IOMMU Group ${g##*/}:"
    for d in $g/devices/*; do
        echo -e "\t$(lspci -nnks ${d##*/})"
    done;
done;