>Subtracting tsc_offset later is easier. >> In guest : rx_time = tsc_to_ns * rdtsc() >> Delay = rx_time - tx_time >> >> How to enable kvm_write_tsc_offset ? ># echo kvm_write_tsc_offset > /sys/kernel/debug/tracing/set_event >Then boot guest >Then cat /sys/kernel/debug/tracing/trace OK - I did it and it is indeed accurate. But this will not solve my problem, because I need the host realtime clock in my guest and not the host-TSC In my application VMa in HOSTa is sending a 1-way delay measurement packet to VMb in HOSTb. I'm perfectly synching the 2 hosts with PTP. I need that the 2 guests's clocks will be synched to their hosts i.e. VMa/VMb is sync to HOSTa/HOSTb accordingly -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
