ZwPowerInformation

NTSTATUS __stdcall ZwPowerInformation(
        POWER_INFORMATION_LEVEL InformationLevel,
        PVOID InputBuffer,
        UINT32 InputBufferLength,
        PVOID OutputBuffer,
        UINT32 OutputBufferLength){
  NTSTATUS result; 
  _disable();
  __readeflags();
  KiServiceInternal();
  return result;
}

Referenced by:

HaliAcpiMachineStateInit
HalpSetShutdownResetHandler
PdcPortOpenCommon
PoGetLightestSystemStateForEject
PopArmIdlePhaseWatchdog
PopCreateIdlePhaseWatchdog
PopDisarmIdlePhaseWatchdog
PopInvokeWin32Callout
PspRecordCrashedProcessIntoBlackbox
RtlCheckSystemBootStatusIntegrity
RtlRestoreSystemBootStatusDefaults
RtlpRecordBootStatusData
RtlpSystemBootStatusRequest