Reference TSC during Save and Restore and Migration

To address migration scenarios to physical platforms that do not support iTSC, the TscSequence field is used. In the event that a guest partition is migrated from an iTSC capable host to a non-iTSC capable host, the hypervisor sets TscSequence to the special value of 0xFFFFFFFF, which directs the guest operating system to fall back to a different clock source (for example, the virtual PM timer).

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Build date: 11/16/2013