https://www.theregister.co.uk/2018/0...u_design_flaw/ A fundamental design flaw (a Kernel memory vulnerabiulity) in Intel chips of the past ten years has caused a security vulnerability at the very lowest, most basic and most hidden level of the architecture that Intel cannot fix by themselves. The workaround is that operation systems, both Windows and Linux, need to apply rewrites for the Kernel that will soon be distributed via the OS' usual patch distribution channels. The fix comes at a hefty cost for some, older Intel chips may be threatened to lose up to 30% of performance, with newer chips said to get away with lower losses, as low as 5% - but a loss nevertheless. The Linux fix seems to also adress AMD chips, but it is unclear to me whether that is due to a newly revealed weakness in AMD chips as well, or is just a precautionary measure. If in the coming weeks you observe a loss in performance in your systems, this likely is the explanation.