Instead of having a new CPU model called "best", we can simply make "-cpu host" available on TCG. I have submitted a patch for this yesterday:
https://www.mail-archive.com/qemu-devel@nongnu.org/msg422959.html -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1657010 Title: RFE: Please implement -cpu best or a CPU fallback option Status in QEMU: New Bug description: QEMU should implement a -cpu best option or some other way to make this work: qemu -M pc,accel=kvm:tcg -cpu best qemu -M pc,accel=kvm:tcg -cpu host:qemu64 See also: https://bugzilla.redhat.com/show_bug.cgi?id=1277744#c6 To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1657010/+subscriptions