--- fixes: - | `Bug 1845986`_ has been fixed by adding iommu driver when the following metadata options are used with AMD SEV: - ``hw_scsi_model=virtio-scsi`` and either ``hw_disk_bus=scsi`` or ``hw_cdrom_bus=scsi`` - ``hw_video_model=virtio`` Also a virtio-serial controller is created when ``hw_qemu_guest_agent=yes`` option is used, together with iommu driver for it. .. _Bug 1845986: https://launchpad.net/bugs/1845986