VOID __stdcall PpmResetPerformanceAccumulation(_KPRCB *Prcb){
if( (Prcb->FeatureBits & 0x8000000000i64) != 0 )
Prcb->PowerState.PerfFeedback.StallCyclesLast = __readmsr(0xDB2u);
Prcb->PowerState.PerfFeedback.CyclesLast = __rdtsc();
Prcb->PowerState.PerfFeedback.LastUpdateTime = KeQueryPerformanceCounter(0i64);
}