/usr/bin/qemu-system-riscv64 kvm virt riscv64 /usr/share/AAVMF/AAVMF_CODE.fd /usr/share/AAVMF/AAVMF32_CODE.fd /usr/share/OVMF/OVMF_CODE.fd rom pflash yes no no off 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