MiIsPageInHugePfn

BOOL __stdcall MiIsPageInHugePfn(UINT64 a1){
  return *(&stru_140C4DB30 + 271) && _bittest64(*(&stru_140C4DB30 + 271), (a1 >> 18) & 0x3FFFF);
}

Referenced by:

MiMarkHugePfnBad
MiMarkHugePfnGood
MiUnlinkBadPages
MmMarkPhysicalMemoryAsBad