On 16.08.2022 10:34, Dylanger Daly wrote: > Indeed no devices are being passed into the domU, I'm simply trying to start > a vanilla VM with no PCIe devices attached.
Hmm, looking more closely it's the sound device which is being opened by some ALSA process. I have no clue at all why this would happen while starting a VM. If the firmware setup allows you to, you may want to try turning off that device and see if then the VM starts successfully. > Could it be a misconfiguration with ACPI tables? I originally thought it > could be AMD's SEV but I think it might just be that Xen is attempting to use > a memory region that it shouldn't No, it's clearly ACPI which tries to evaluate / modify something. That's not initiated by Xen at all. It's merely likely that under Xen something works differently than under native. As said, since now you're able to see log output on the screen, quite likely you would also see an earlier message about some mapping operation having failed. Whether that would be a Xen or kernel message (or both) is uncertain, as it would depend on the specific operation that is being attempted. Jan
