https://www.theregister.co.uk/2018/06/16/boffins_make_speculative_execution_great_again_with_spectremeltdown_fix/

A group of computer science researchers has proposed a way to overcome the security risk posed by speculative execution, the data processing technique behind the Spectre and Meltdown vulnerabilities.

In a paper distributed this week through the ArXiv preprint server, "SafeSpec: Banishing the Spectre of a Meltdown with Leakage-Free Speculation," computer scientists from University of California, Riverside, College of William and Mary and Binghamton University describe a way to isolate the artifacts produced by speculative execution so that they can't be used to glean privileged data.