Re: [Qemu-devel] [Patch] [kinda-resend] persistent real-time-clock

[Jamie Lokier <jamie@shareable.org>]

Dan Kenigsberg wrote:
> These patches will allow doing the same with VM:
> - Before shutting a VM down, use the monitor's info timeoffset to see
>   how much (in seconds) does the rtc differ from the host clock.
> - Store this offset somewhere.
> - Use it next time with -startdate now+offset.

Another useful one would be store the actual time, and use the same
time when starting next time - without including any advance in host's
clock in the interval.

That's useful when running some time-limited software in a VM.  Then
you can only run the VM when you're using the software, and get more
use out of it before the time runs out.

-- Jamie