ZwFilterBootOption

NTSTATUS __stdcall ZwFilterBootOption(
        _FILTER_BOOT_OPTION_OPERATION FilterOperation,
        UINT64 ObjectType,
        UINT64 ElementType,
        VOID *Data,
        UINT64 DataSize){
  NTSTATUS result; 

  _disable();
  __readeflags();
  KiServiceInternal();
  return result;
}

Referenced by:

ExpQuerySystemInformation
IopInitializeInMemoryDumpData