Qubes running on a dual EPYC 7301 system!

[wilsonk]

Qubes OS version:

Qubes-4.0-RC4
AMD EPYC 7301 X 2
128 GB of 2666 RAM
240 GB SSD drive in SATA 3 (not SAS)
Radeon onboard graphics

IOMMU enabled in rather new BIOS (Nov 27/17)
SM enabled (Virtualization support)

Affected TemplateVMs:

All VM's affected

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Steps to reproduce the behavior:

Try to start VM

Expected behavior:

VM starts

Actual behavior:

VM doesn't start and there are errors in the /var/log/libvirt/libxl/libxl-driver.log that say "PCI device... error. Possibly IOMMU is not enabled?"

General notes:

dmesg seems to indiacate that IOMMUv2 won't start but there are no errors for IOMMU and the device listing shows IOMMU was initialized.

I can gather a little more info on this later, but thought I would post this here quickly in case someone might know a simple fix for this that I am missing.

I can start a VM by disabling networking and not using sys-net/sys-firewall, so it might be somewhat related to 3125?

Related issues:

#3125 might be related

[andrewdavidwong]

Based on our issue reporting guidelines, this appears to be too localized for qubes-issues, since it depends on a specific hardware configuration. We ask that you please send this to the qubes-users mailing list instead. qubes-users is intended for these sorts of issues and receives much more traffic, which means that your issue is more likely to receive a response there. If, after reading our issue reporting guidelines, you believe we are mistaken, please leave a comment briefly explaining why. We'll be happy to take another look, and, if appropriate, reopen this issue. Thank you for your understanding.