LLVM patch to fix half of Spectre attack
As Alex Ionescu has put it:<p>> We built multi-tenant cloud computing on top of processors  and chipsets that were designed and hyper-optimized for<p>> single-tenant use. We crossed our fingers that it would be OK and it would all turn out great and we would all profit.<p>> In 2018, reality has come back to bite us.<p>This is the root of all the problems.