On 14/06/2017 15:22, Eduardo Habkost wrote: >> Yes, definitely. At this point let's add a new "KVM_CAP_HYPERV_SYNIC2" >> capability and declare the old one broken, that will make things easier. > What do we need a capability for? Can't we just call > KVM_SET_MSRS using arch_id (== apic_id) and warn the user if it > doesn't work?
As mentioned in the review of patch 16/23, we may want to break backwards compatibility (meaning we drop the old capability and introduce a new one) for other reasons. Paolo
