> This is strictly about how much memory LuaJIT can address on that platform

No it is not.

https://github.com/LuaJIT/LuaJIT/issues/285#issuecomment-197...

> If your workload fits inside 2 GiB (IIRC) it will be fast.

This has nothing to do with the issue being mentioned here. You are understating the severity of this issue and seem to be confusing it with a different issue that is no longer relevant in 2.1.