ZwTerminateThread

NTSTATUS __stdcall ZwTerminateThread(PVOID ThreadHandle, INT64 ExitStatus){
  NTSTATUS result; 
  _disable();
  __readeflags();
  KiServiceInternal();
  return result;
}

Referenced by:

KiParkUmsThread
KiSwapToUmsThread
RtlAssert