A microcode update, which simply enables some previously disabled features, that allow you to workaround the problem (ie. by clearing the branch prediction buff

A microcode update, which simply enables some previously disabled features, that allow you to workaround the problem (ie. by clearing the branch prediction buffer). The hardware is still most definitely vulnerable to both Meltdown and Spectre, and will require software workarounds to hide the problems, which in turn will cause lower performance.