On 21.06.2025 16:39, J. Roeleveld wrote: > I managed to get past the kernel panic (sort of) by doing the following: > > 1) Ensure system is fully OFF before booting. A reset/reboot will cause these > errors. > > 2) Fix the BIOS config to ensure the PCI-ports are split correctly. If anyone > has a Supermicro board and gets errors about PCI-slots not getting full speed > let me know. > > Not entirely convinced the 2nd was part of the cause, but that's ok. > > I now, however, get a new error message in the Domain0 dmesg: > pciback <pci-address>: xen_map irq failed -28 for <domid> domain > pciback <pci-address>: error enabling MSI-X for guest <domid>: err -28! > > For the NVMe devices, I get these twice, with the 2nd time complaining about > MSI (without the -X) > > I feel there is something missing in my kernel-config and/or domain config. > If anyone can point me at what needs to be enabled/disabled or suggestions on > what I can try?
The default number of extra IRQs the guest may (have) set up may be too small. You may need to make use of Xen's extra_guest_irqs= command line option. Jan
