/usr/bin/qemu-system-riscv64 qemu virt riscv64 /obviously/fake/firmware1.fd /obviously/fake/firmware2.fd rom pflash yes no no file anonymous memfd disk cdrom floppy lun fdc scsi virtio usb sata virtio virtio-transitional virtio-non-transitional sdl vnc spice egl-headless subsystem default mandatory requisite optional usb pci scsi default vfio virtio virtio-transitional virtio-non-transitional random egd builtin path handle virtiofs usb pty unix spicevmc virtio qemu builtin