Solved Retrieving IOMMU groups

[ozfbu]

How can I get the IOMMU Groups in Fedora please?

VT-d is turned on, and I re-checked in the BIOS that it is enabled

Internet searching indicates that I should be able to see something in /sys/kernel/iommu_group, but this folder is empty for me

lspci gives
[numbers, colon, dot] VGA compatible controller: [my GPU]
but I'm a little leery of saying "yes, this is the IOMMU group for my GPU" without the /sys/kernel folder or anything else

ls /sys/bus/pci/devices
gives
0000:00:00.0 0000:00:12.0 0000:00:17.0 ...
Going to my GPU's apparent folder does not show me any IOMMU groups :/

 

[CaffeineAddict]

/sys/kernel/iommu_group, but this folder is empty

For Intel systems, you can add intel_iommu=on to the kernel command line. For AMD systems, use amd_iommu=on.

Understanding and Utilizing IOMMU in Linux

Input/Output Memory Management Unit (IOMMU) is a crucial component in modern computer systems, especially in Linux environments. It provides a layer of indirection between the I/O devices and the system memory, offering benefits such as enhanced security, device isolation, and support for...

linuxvox.com

 

[f33dm3bits]

Proxmox has a good guide for it, you will have to translate it to Fedora though.

PCI(e) Passthrough - Proxmox VE

In short:
1. Enable IOMMU support
2. Add vfio kernel modules to your initramfs
3. Assign the gpu to your vm

I haven't done it on Fedora but other people have, the following one is the most recent en easiest one to understand that I found.

GPU Passthrough Fedora

GPU Passthrough Fedora. GitHub Gist: instantly share code, notes, and snippets.

gist.github.com

 

[ozfbu]

Understanding and Utilizing IOMMU in Linux

Input/Output Memory Management Unit (IOMMU) is a crucial component in modern computer systems, especially in Linux environments. It provides a layer of indirection between the I/O devices and the system memory, offering benefits such as enhanced security, device isolation, and support for...

linuxvox.com

Linux.org to the rescue...thank you CaffeineAddict

Proxmox has a good guide for it, you will have to translate it to Fedora though.

PCI(e) Passthrough - Proxmox VE

In short:
1. Enable IOMMU support
2. Add vfio kernel modules to your initramfs
3. Assign the gpu to your vm

I haven't done it on Fedora but other people have, the following one is the most recent en easiest one to understand that I found.

GPU Passthrough Fedora

GPU Passthrough Fedora. GitHub Gist: instantly share code, notes, and snippets.

gist.github.com

These look pretty neat too
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