Hi, Tarantool[1] team maintains production-ready fork of LuaJIT [2]. Commercial support contract for Tarantool covers problems with LuaJIT as the integral part of the product.

[1]: http://tarantool.org/ [2]: https://github.com/tarantool/luajit

P.S. there are shortcoming plans to establish a non-profit foundation to continue development of LuaJIT.

// Disclaimer, I'm a contributor of [1]