[PVE-User] IOMMU and Interrupt Remapping

Dominik Csapak d.csapak at proxmox.com
Fri Mar 8 08:26:18 CET 2019


On 08/03/2019 03:43, Craig Jones wrote:
> Hello,
> 
> I'm trying to gauge if I should use Proxmox on an Intel-based or AMD-based system. A major factor that's contributing to this is IOMMU support, but more specifically, Interrupt Remapping support.
> 
> Based on this<https://pve.proxmox.com/wiki/Pci_passthrough> article, it seems that both AMD and Intel support IOMMU, but Interrupt Remapping is not as widely supported. I thought IOMMU and Interrupt Remapping always went hand-in-hand. Is this not the case? Does Proxmox have better Interrupt Remapping support for one type of system over the other?
> 

The article is at this point very old and ought to be updated.
For more concise and current information the reference documentation[0] 
is a better start

in any case, i have successfully used pci passthrough/iommu with both 
intel (>= haswell) and current amd systems (ryzen,epyc), so it
depends on the specific hardware (mostly mainboard)

hope that helps
Dominik

0: https://pve.proxmox.com/pve-docs/chapter-qm.html#qm_pci_passthrough



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