Blog post explaining the details: <a href="https://nebelwelt.net/blog/20190306-SMoTherSpectre.html" rel="nofollow">https://nebelwelt.net/blog/20190306-SMoTherSpectre.html</a><p>Seems to be dependent on SMT.
Shared resources tend to introduce side channels.<p>What do you do in a world that depends on computer hardware with security vulnerabilities that probably won't be fixed?