Torvalds Blasts "Beyond Stupid" Flushing L1d On Context Switches - Reverts Code For Now

As part of the initial set of changes merged today for Linux 5.8 was the x86/mm material that included the controversial feature of opt-in flushing of the L1 data cache on context switching. Linus Torvalds ended up deciding to revert this functionality as for now at least he views it as crazy...