As expected, silence on Spectre v1. But nice job @arstechnica being explicit that the microcode fixes are for Spectre v2.https://twitter.com/DrPizza/status/966389985510416385 …
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No it doesn't. The only architectural protection domains are the rings, to an extent different values of CR3, and SGX.
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That's an arbitrarily narrow view. I see untaken branches as a much lower-level kind of protection domain, predating MMUs.
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I don't, and nor do Intel, AMD, ARM, Apple, IBM, Samsung, Qualcomm, or Fujitsu, and I think that's pretty much everyone designing high performance CPUs.
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They see what's in their interest for not taking responsibility and being maximally competitive in performance/cost.
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It's not their responsibility to enforce software-defined boundaries. That's up to the software that's erecting those boundaries.
End of conversation
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