KeRevertToUserGroupAffinityThread

VOID __stdcall KeRevertToUserGroupAffinityThread(PGROUP_AFFINITY PreviousAffinity){
  PGROUP_AFFINITY v1; 
  _ETHREAD *CurrentThread; 
  unsigned __int8 CurrentIrql; 
  struct _KPRCB *CurrentPrcb; 
  unsigned int v5; 
  unsigned int v6; 
  unsigned int v7; 
  int Group; 
  unsigned __int64 v9; 
  bool v10; 
  UINT64 SpinCount; 
  __int64 v12; 
  v1 = PreviousAffinity;
  v12 = 0i64;
  CurrentThread = (_ETHREAD *)KeGetCurrentThread();
  if( (*((_DWORD *)CurrentThread + 29) & 8) != 0
    && !(PreviousAffinity->Reserved[0] | (unsigned __int16)(PreviousAffinity->Reserved[1] | PreviousAffinity->Reserved[2])) )
  {
    if( !PreviousAffinity->Mask
      || (Group = PreviousAffinity->Group, (unsigned __int16)Group < KeActiveProcessors.Count)
      && (v9 = KeActiveProcessors.Bitmap[Group], v10 = (v9 & v1->Mask) == 0, v1->Mask &= v9, !v10) )
    {
      CurrentIrql = KeGetCurrentIrql();
      __writecr8(2ui64);
      CurrentPrcb = KeGetCurrentPrcb();
      LODWORD(SpinCount) = 0;
      while( _interlockedbittestandset64((volatile signed __int32 *)CurrentThread + 16, 0i64) )
      {
        do
          KeYieldProcessorEx(&SpinCount);
        while( *((_QWORD *)CurrentThread + 8) );
      }
      v5 = *((_DWORD *)CurrentThread + 147);
      if( v1->Mask )
      {
        v6 = 1280;
      }
      else
      {
        v6 = *((_DWORD *)CurrentThread + 49);
        v1 = (PGROUP_AFFINITY)((char *)CurrentThread + 552);
        *((_DWORD *)CurrentThread + 29) &= ~8u;
      }
      KiSetSystemAffinityThread((__int64)CurrentPrcb, (__int64)v1, v6, (__int64)&v12);
      v7 = *((_DWORD *)CurrentThread + 147);
      KiReleaseThreadLockSafe((INT64)CurrentThread);
      if( (xmmword_140CFB490 & 0x8000000) != 0 )
        EtwTraceIdealProcessor((INT64)CurrentThread, 0x546u, v5, v7);
      KiProcessDeferredReadyList((__int64)CurrentPrcb, &v12, CurrentIrql);
    }
  }
}

Referenced by: