An instruction added as a curiosity / micro-optimization back in 2010 is now very important. Previously: "PCID is now a critical performance/security feature o

An instruction added as a curiosity / micro-optimization back in 2010 is now very important. Previously: "PCID is now a critical performance/security feature on x86" https://news.ycombinator.com/item?id=16094349 https://news.ycombinator.com/item?id=16094349