MmAcquireLoadLock

_ETHREAD *MmAcquireLoadLock(){
  _ETHREAD *CurrentThread; 
  CurrentThread = (_ETHREAD *)KeGetCurrentThread();
  if( CurrentThread == (_ETHREAD *)qword_140C4CA18 )
  {
    ++dword_140C4CA20;
  }
  else
  {
    --*((_WORD *)CurrentThread + 242);
    ExAcquirePushLockExclusiveEx((UINT64)&qword_140C4CA10, 0i64);
    qword_140C4CA18 = (__int64)CurrentThread;
    dword_140C4CA20 = 1;
  }
  return CurrentThread;
}

Referenced by:

IopLoadDriver
MiFlushDeferredRetpolineImageLoadEvents
MiFlushStrongCodeDriverLoadFailures
MiInitializeRetpoline
MiLoadHotPatch
MiLogHotPatchRundown
MiObtainSectionForDriver
MiQueryProcessActivePatches
MiReloadBootLoadedDrivers
MiSessionUnloadAllImages
MiShutdownSystem
MiUnloadHotPatch
MmAddVerifierSpecialThunks
MmAddVerifierThunks
MmBackSystemImageWithPagefile
MmChangeImageProtection
MmDiscardDriverSection
MmEnableVerifierForDriver
MmEnumerateSystemImages
MmFreeBootDriverInitializationCode
MmLoadSystemImageEx
MmMarkHypercallPageRetpolineBit
MmRegisterHotPatch
MmUnloadSystemImage
MmWriteSystemImageTracepoint
VfAddVerifierEntry