On 2 May 2017 at 20:20, Martin Kelly wrote: > -QB_CPU_KVM_x86-64 = "-cpu kvm64" > +QB_CPU_KVM_x86-64 = "-cpu core2duo" > What's the actual meaning of the "kvm64" and "kvm32" CPUs? Is there a performance hit? Should we be instead changing the qemu machine to target a different instruction set? Ross