On 27/09/19 17:58, Xiaoyao Li wrote: > Indeed, "KVM_GET_MSR_INDEX_LIST" returns the guest msrs that KVM supports and > they are free from different guest configuration since they're initialized when > kvm module is loaded. > > Even though some MSRs are not exposed to guest by clear their related cpuid > bits, they are still saved/restored by QEMU in the same fashion. > > I wonder should we change "KVM_GET_MSR_INDEX_LIST" per VM? We can add a per-VM version too, yes. Paolo