On 03/08/2017 01:21, Marcelo Tosatti wrote: >> - if (ka->use_master_clock || >> - (gtod->clock.vclock_mode == VCLOCK_TSC && vcpus_matched)) >> + if (ka->use_master_clock || vcpus_matched) >> kvm_make_request(KVM_REQ_MASTERCLOCK_UPDATE, vcpu); > Don't drop this. The masterclock scheme requires TSC for proper functioning > (or an analysis why its supposed with different HPET+TSC, for example). I think testing gtod->clock.vclock_mode is just an optimization? kvm_get_time_and_clockread would return false anyway and masterclock would not be enabled. Paolo
