MiAllocateInPageSupportBlock

VOID *__fastcall MiAllocateInPageSupportBlock(INT64 a1, UINT64 a2){
  VOID *result; 
  LODWORD(result) = MiAllocatePool((struct _SLIST_ENTRY *)0x40);
  return result;
}

Referenced by:

MiGetInPageSupportBlock
MiInitializePageFaultResources