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Asus Maximus VII Hero IOMMU groups

Has anyone ever setup VFIO passthrough on this motherboard:

https://www.asus.com/us/Motherboards/MAXIMUS_VII_HERO

I’ve been following the Wendell’s guide and I don’t see any iommu groups. I’m running pop_os 19.10. I’ve enabled VT-d in the bios and added GRUB_CMDLINE_LINUX_DEFAULT="quiet splash intel_iommu=on" to the /etc/default/grub file. Then ran update grub. This seems like it updated the EFI boot config as well. However /sys/kernel/iommu_groups is empty. =(

I should also note, I haven’t installed the second video card yet. I was hoping to verify motherboard support before I started messing with the hardware.

Probably need to install an ACS patch for iommu groups.

What is an ACS patch?

It’s a kernel level patch that separates IOMMU groups and in my experience is traditionally needed in most older intel chipsets.

For more information have a look at:

Thank you