[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] S3 sleep in dom0 breaks dom0<->domU wallclock synchronization
On 05/07/2010 20:18, "Jeremy Fitzhardinge" <jeremy@xxxxxxxx> wrote: > So the problem is that dom0 does the S3 suspend/resume, and presumably > its wallclock time is updated properly via Linux's normal mechanisms. > But the S3 suspend/resume is unnoticed by all the domUs, so they don't > know that an enormous amount of time has passed in an instant? Does > that affect all the guest clocks, or just wallclock? Um, just wallclock I think? > How does Xen deal with the S3 suspend/resume? Does the system clock > just keep ticking as usual (so the whole suspended time appears to be > sub-nanosecond), but the wallclock offset gets updated? This. -- Keir > Or does it try > to workout how long the suspended time was and adjusts the system time > accordingly? That would allow guest timekeeping to compensate for the > suspended time, assuming they can deal with large forward leaps. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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