MiGetVmPartition

_MI_PARTITION *__stdcall MiGetVmPartition(VOID *InputPartitionObject, _EPROCESS *NewProcess){
  return *(_MI_PARTITION **)(*(&stru_140C4DB30 + 267) + 8i64 * *((unsigned __int16 *)InputPartitionObject + 87));
}

Referenced by:

MiBuildNewCloneDescriptor
MiCopyPagesIntoEnclave
MiCreateHardwareEnclave