On Tue, Oct 21, 2014 at 03:18:58AM +0000, Thomas Shao wrote: > In some situation, the user is not able to enable guest VM to sync with > external > time source, like NTP. But the host is still synced with a trusted time > source. > In this case, host-guest time synchronization is useful.
It's interesting to imagine that a virtualization host could present a time service to the guest *userspace*, even when the guest is not otherwise exposed to the internet at large. This could take the form of an NTP server on a private network, or as an implementation of a time source directly usable by ntpd in the guest, for instance as an emulated serial port with synthetic NEMA GPS signal + PPS signal, for instance. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
