Re: x86: kvmclock: abstract save/restore sched_clock_state (v2)

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On (Mon) 13 Feb 2012 [11:07:27], Marcelo Tosatti wrote:
> 
> Upon resume from hibernation, CPU 0's hvclock area contains the old
> values for system_time and tsc_timestamp. It is necessary for the
> hypervisor to update these values with uptodate ones before the CPU uses
> them.
> 
> Abstract TSC's save/restore sched_clock_state functions and use
> restore_state to write to KVM_SYSTEM_TIME MSR, forcing an update.
> 
> Also move restore_sched_clock_state before __restore_processor_state,
> since the later calls CONFIG_LOCK_STAT's lockstat_clock (also for TSC).
> Thanks to Igor Mammedov for tracking it down.
> 
> Fixes suspend-to-disk with kvmclock.
> 
> Signed-off-by: Marcelo Tosatti <mtosatti@xxxxxxxxxx>

This works fine, thanks.

Tested-by: Amit Shah <amit.shah@xxxxxxxxxx>

		Amit
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