On Thu, Jun 13, 2019 at 10:18 AM Paolo Bonzini <pbonzini@xxxxxxxxxx> wrote: > Also, while this may vary dynamically based on the L2 guest that is > running, this is much less true for unrestricted-guest processors. > Without data on _which_ scenarios are bad for a static set of shadowed > fields, I'm not really happy to add even more complexity. Data supporting which scenarios would lead you to entertain more complexity? Is it even worth collecting data on L3 performance, for example? :-)