On 09/10/19 07:21, Jianyong Wu (Arm Technology China) wrote: > As ptp_kvm clock has fixed to arm arch system counter in patch set > v4, we need check if the current clocksource is system counter when > return clock cycle in host, so a helper needed to return the current > clocksource. Could I add this helper in next patch set? You don't need a helper. You need to return the ARM arch counter clocksource in the struct system_counterval_t that you return. get_device_system_crosststamp will then check that the clocksource matches the active one. Paolo
