[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] Re: [PATCH 1/5] Add a global synchronization point for pvclock
On Tue, 2010-10-26 at 10:14 +0200, Avi Kivity wrote: > On 10/26/2010 01:30 AM, Jeremy Fitzhardinge wrote: > > Unfortunately this is breaking Xen save/restore: if you restore on a > > host which was booted more recently than the save host, causing the > > system time to be smaller. The effect is that the domain's time leaps > > forward to a fixed point, and stays there until the host catches up to > > the source host... > > Shouldn't save/restore also save the timebase? > > > I guess last_time needs to be reset on this type of event. I guess the > > cleanest way would be for pvclock.c to register a sysdev suspend/resume > > handler. > > Should be for Xen only; kvm save/restore doesn't involve the guest. the suspend/resume path do adjust the time base. Maybe something similar should be done ? _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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