/usr/bin/qemu-system-x86_64 kvm pc-i440fx-6.0 x86_64 bios efi /obviously/fake/firmware1.fd /obviously/fake/firmware2.fd rom pflash yes no no on off on off EPYC-Rome AMD qemu64 qemu32 phenom pentium3 pentium2 pentium n270 kvm64 kvm32 coreduo core2duo athlon Westmere-IBRS Westmere Snowridge Skylake-Server-noTSX-IBRS Skylake-Server-IBRS Skylake-Server Skylake-Client-noTSX-IBRS Skylake-Client-IBRS Skylake-Client SandyBridge-IBRS SandyBridge Penryn Opteron_G5 Opteron_G4 Opteron_G3 Opteron_G2 Opteron_G1 Nehalem-IBRS Nehalem IvyBridge-IBRS IvyBridge Icelake-Server-noTSX Icelake-Server Icelake-Client-noTSX Icelake-Client Haswell-noTSX-IBRS Haswell-noTSX Haswell-IBRS Haswell EPYC-Rome EPYC-Milan EPYC-IBPB EPYC Dhyana Cooperlake Conroe Cascadelake-Server-noTSX Cascadelake-Server Broadwell-noTSX-IBRS Broadwell-noTSX Broadwell-IBRS Broadwell 486 file anonymous memfd disk cdrom floppy lun ide 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 tpm-tis tpm-crb passthrough emulator external 1.2 2.0 usb pty unix spicevmc virtio qemu builtin default 47 1 59 450 sev