Selfhosted @lemmy.world anon2963 @infosec.pub 2 mo. ago

Best IOMMU Group Database?

I am looking to buy a new mini PC home server and I want to be able to pass through my iGPU and NIC to different VMs. Where can I find a well-maintained database of IOMMU groups so that I can pick a good match for my needs?

There exists iommu.info but that barely has any entries.

5 comments

https://wiki.archlinux.org/title/PCI_passthrough_via_OVMF#Prerequisites
- There are links to other wikis with lists of devices.
- Thanks but these are only lists of CPUs and motherboards that support IOMMU, not the IOMMU groups. For me (and many others) the groupings are just as important as whether there is support at all.
  
  The groupings are defined by the motherboard. In my experience, all motherboards that support IOMMU will put at least 1 PCIe slot in its own own group, which is good for Graphics Card passthrough. However, the grouping of other stuff like SATA controllers and NICs varies wildly between board, and that is what I am interested in.
Maybe linux-hardware.org but I don't know tbh.
- Thanks. Some of these entries maybe (20%) have IOMMU groups listed under "lspci_all". But it is extremely awkward to search through. So maybe I will put a feature request in the forum to make IOMMU more searchable. But this is still likely the largest database of IOMMU groupings on the web, even if it is not easily searchable.