@LaF0rge If all fails you can likely iSCSI it over with scst! I learned of many SCSI based crimes when working on https://blog.benjojo.co.uk/post/ip-over-fibre-channel-hack

I assume seabios isn't hanging but the PCI option ROM is, since PCI passthrough messes with a lot of assumptions with devices. If you ever see me in person ask me about my "fun" adventures in PCI passthrough and PCIe HSM cards