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    SubjectRe: [RFC PATCH v3 4/6] psci: Add hvc call service for ptp_kvm.
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    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

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