Paolo Bonzini <pbonzini@xxxxxxxxxx> writes: > On 2/17/22 17:09, Vitaly Kuznetsov wrote: ... >> (but I still mildly dislike using 'EOPNOTSUPP' for a temporary condition >> on the host). > > It's not temporary, always-catchup is set on KVM_SET_TSC_KHZ and never > goes away. Even if the guest is migrated (back) to the host which supports TSC scaling? -- Vitaly