KiIsSecureProcessFlush

BOOL __stdcall KiIsSecureProcessFlush(UINT64 a1, INT64 a2){
  return(_DWORD)a2 == 1
      && a1 <= 0x7FFFFFFEFFFFi64
      && *(_QWORD *)&KeGetCurrentThread()->ApcState.Process->Pcb.SecureState;
}

Referenced by:

KeFlushMultipleRangeCurrentTb
KeFlushSingleCurrentTb