[Xen-devel] Retrieving the precise guest start time via libxc or similar?

[Razvan Cojocaru <rcojocaru@xxxxxxxxxxxxxxx>]

Hello,

xc_domain_getinfo() gets us info->cpu_time, which, if I understand
correctly, is the guest uptime.

Is there an officially sanctioned way of retrieving the _exact_ guest
start time? Obviously we can compute an approximation by doing now -
info->cpu_time, but we'd like to be able to uniquely identify an OS boot
-> shutdown cycle, and the difference method is not guaranteed to always
yield the same result for the same running OS.


Thanks,
Razvan

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