Shuo A Liu 4115dd6241 hv: PAUSE-loop exiting support in hypervisor ...

As we enabled cpu sharing, PAUSE-loop exiting can help vcpu
to release its pcpu proactively. It's good for performance.

VMX_PLE_GAP: upper bound on the amount of time between two successive
executions of PAUSE in a loop.
VMX_PLE_WINDOW: upper bound on the amount of time a guest is allowed to
execute in a PAUSE loop

Tracked-On: #4329
Signed-off-by: Shuo A Liu <shuo.a.liu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>

2020-01-07 11:23:32 +08:00

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