AMD Motherboards - IOMMU group reports

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IOMMU group reports

Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=15697
Printed Date: 03 Jun 2025 at 9:12am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: IOMMU group reports

Posted By: FireFlower
Subject: IOMMU group reports
Date Posted: 29 Aug 2020 at 6:36pm

Hello,

I would like to start this thread for people to report IOMMU groups of their motherboard when using Asrock's AMD motherboards.

Remember to tell us your BIOS version!
Here is a bash script:


#!/bin/bash
shopt -s nullglob
for g in /sys/kernel/iommu_groups/*; do
    echo "IOMMU Group ${g##*/}:"
    for d in $g/devices/*; do
        echo -e "\t$(lspci -nns ${d##*/})"
    done;
done;

source: https://wiki.archlinux.org/index.php/PCI_passthrough_via_OVMF#Ensuring_that_the_groups_are_valid

Example output of the script:


IOMMU Group 1:
     00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor PCI Express Root Port [8086:0151] (rev 09)
IOMMU Group 2:
     00:14.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB xHCI Host Controller [8086:0e31] (rev 04)
IOMMU Group 4:
     00:1a.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #2 [8086:0e2d] (rev 04)
IOMMU Group 10:
     00:1d.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #1 [8086:0e26] (rev 04)
IOMMU Group 13:
     06:00.0 VGA compatible controller: NVIDIA Corporation GM204 [GeForce GTX 970] [10de:13c2] (rev a1)
     06:00.1 Audio device: NVIDIA Corporation GM204 High Definition Audio Controller [10de:0fbb] (rev a1)

Personally I would wish somebody posted X570M Pro4 motherboard iommu group

When pasting iommu groups you might want to use BBcode's [#code][#/code] tags