2GB (for 64-bit apps) by itself can be mitigated by using ffi-allocated memory. The problem is really if you write a plugin (OSX) using luajit, and you can't ch

2GB (for 64-bit apps) by itself can be mitigated by using ffi-allocated memory. The problem is really if you write a plugin (OSX) using luajit, and you can't change the main app to not use any memory below 4GB (where the heap should be). This may be a valid technical concern for certain products (plugins), but not a real limitation for others. And so far it's been mostly on OSX.