OK, panic again: patching Spectre and Meltdown has been a disaster

When the news of two showstopping bugs in virtually every computer in use today broke, it was scary stuff -- experts predicted that mitigating these bugs would be difficult and impose severe performance penalties on patched systems; a week later, Google released research suggesting that the fear was misplaced, and that patching would be an orderly and relatively painless process. (more")