Re: [Xen-devel] [PATCH v5 3/5] x86/time: implement tsc as clocksource

2016-09-23 Thread Jan Beulich
>>> On 23.09.16 at 12:42, wrote: > Recent x86/time changes improved a lot of the monotonicity in xen > timekeeping, making it much harder to observe time going backwards. > Although platform timer can't be expected to be perfectly in sync with > TSC and so get_s_time won't be guaranteed to always

[Xen-devel] [PATCH v5 3/5] x86/time: implement tsc as clocksource

2016-09-23 Thread Joao Martins
Recent x86/time changes improved a lot of the monotonicity in xen timekeeping, making it much harder to observe time going backwards. Although platform timer can't be expected to be perfectly in sync with TSC and so get_s_time won't be guaranteed to always return monotonically increasing values acr