Devastating Speculative Execution Intel CPU Bug

[SteelCrysis]

https://www.techpowerup.com/248693/mit-r...ion-is-key

Intel will have to redesign certain features on their future processors to finally forget Meltdown and Spectre, but meanwhile others have jumped to give some options. MIT researchers have developed a way to partition and isolate memory caches with 'protection domains'. Unlike Intel's Cache Allocation Technology (CAT), MIT's technology, called DAWG (Dynamically Allocated Way Guard) disallows hits across those protection domains. This is important, because attackers targeting this vulnerabilities take advantage of 'cache timing attacks' and can get access to sensible, private data.
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According to MIT researcher's paper (PDF), DAWG requires "minimal modifications to the underlying operating system", and they assure the performance overhead is "reasonable". Although it's not a silver bullet for all known attacks, they hope to expand this project to fix all Meltdown and Spectre variants.