There are a lot of knee-jerking in this thread. I don't think anybody is arguing that this is a bad patch, but if it does have a notable performance impact (whi

There are a lot of knee-jerking in this thread. I don't think anybody is arguing that this is a bad patch, but if it does have a notable performance impact (which it probably does not) it's still worth knowing. If only to be able to answer questions like "why do our backups suddenly take 10% more time to complete? Do we have a problem with our network infrastructure?" It's not about tradeoffs, it's about understanding what's going on and anticipating potential problems. By your logic we shouldn't have to discuss the performance regressions on CPUs who implement spectre/meltdown mitigations because "it's irrelevant". Obviously these patches are necessary but the performance impact is very relevant for many users.