Hi, > +microvm.kernel-cmdline=bool (Set off to disable adding virtio-mmio devices to the kernel cmdline) Hmm, is that the long-term plan? IMO the virtio-mmio devices should be discoverable somehow. ACPI, or device-tree, or fw_cfg, or ... > +As no current FW is able to boot from a block device using virtio-mmio > +as its transport, To fix that the firmware must be able to find the virtio-mmio devices. cheers, Gerd