On Tue, Jun 23, 2015 at 07:41:50PM +0200, Andreas Färber wrote: [...] > If that is the whole problem here, then why not just add a global flag > to only enable explicitly requested KVM features? All other features > should not depend on the host, and the whole discussion about -x.y seems > like a distraction.
Now replace "KVM features" with "CPU fatures", because all CPU features are KVM features, as all of them depend on KVM code enabling them on GET_SUPPORTED_CPUID. Thus, the global flag to only enable explicitly request KVM features on CPUs is "-cpu custom", which doesn't enable any CPU feature at all. -- Eduardo
