search for: last_valu

If the guest domain has been suspend/resumed or migrated, then the system clock backing the pvclock clocksource may revert to a smaller value (ie, can be non-monotonic across the migration/save-restore). Make sure we zero last_value in that case so that the domain continues to see clock updates. [ I don't know if kvm needs an analogous fix or not. ] Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge at citrix.com> Cc: Stable Kernel <stable at kernel.org> Reported-by: Eelco Dolstra <e.dolstra at tudel...

If the guest domain has been suspend/resumed or migrated, then the system clock backing the pvclock clocksource may revert to a smaller value (ie, can be non-monotonic across the migration/save-restore). Make sure we zero last_value in that case so that the domain continues to see clock updates. [ I don't know if kvm needs an analogous fix or not. ] Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge at citrix.com> Cc: Stable Kernel <stable at kernel.org> Reported-by: Eelco Dolstra <e.dolstra at tudel...

If the guest domain has been suspend/resumed or migrated, then the system clock backing the pvclock clocksource may revert to a smaller value (ie, can be non-monotonic across the migration/save-restore). Make sure we zero last_value in that case so that the domain continues to see clock updates. [ I don't know if kvm needs an analogous fix or not. ] Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge at citrix.com> Cc: Stable Kernel <stable at kernel.org> Reported-by: Eelco Dolstra <e.dolstra at tudel...

...zoomhash = {13 => 0.5, 14 => 1, 15 => 2, 16 => 4} r = (site.map_stat.radius.to_f * zoomhash[@zoom.to_i].to_f).to_i # title tooltip for the image title = "%s %s => %s" % [@group.name, site.site_name, (KeyWord.stat_description(site.status_sensor.last_value)[0])] # create the icon image ( the pivot circle ) icon = GIcon.new(:image => "/images/tmp/#{site.id}.png", :icon_size => GSize.new((r*2),(r*2)), :icon_anchor => GPoint.new(r,r), :info_window_anchor => GPoint.new(r,r))...

...in which case "unstolen time" isn''t meaningful. So just use plain xen_clocksource_read to return wallclock nanoseconds for sched_clock. 2.6.36 does not work, since 489fb49 and e7a3481 are missing: Without the "global synchonization point for pvclock" (AKA last_value) plus the fix to "reset it to 0 on resume" VMs migrate fine in the opposite direction (older=higher uptime → newer=lower uptime), but the original direction (lower→higher) now stalls for 5 minutes. 2.6.37 (which includes above patches) works fine in both directions (I only see a 2 s...