Once upon a time, Chris Murphy lists@colorremedies.com said:
"We recommend that OEMs, cloud service providers, system manufacturers, software vendors and end users stop deployment of current versions." Current versions of what? Microcode?
Well, that's the only thing Intel provides for CPUs, so that's all it can be.
What these means for people who have CPUs which were not crashing (rebooting being a new euphemism for crashing) , but saw variant 2 Spectre mitigation with the 20180108 microcode, will lose full mitigation until Intel gets its ducks into a row.
Lots of people weren't seeing issues, but that's in part because Intel's updated microcode release only actually updated microcode for recent CPUs. I have many servers that aren't crashing, but that's because Intel hasn't actually even tried to fix the microcode for their CPUs yet.