Comment # 11 on bug 1218682 from Guillaume GARDET

I am able to reproduce with latest firmware (202105) and Tumbleweed.
You need to setup EDK2 on ACPI mode (vs DeviceTree mode) and boot _without_
iommu.passthrough=1.
If I set iommu.passthrough=1, then the boot hangs.

If I switch EDK2 on DeviceTree mode, iommu.passthrough=1 breaks partially USB
and in both cases (iommu.passthrough=0 or 1), I get bug 1220698 which breaks
PCIe and thus my access to my NVMe disk.