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You realize that Apple, IBM, and probably a few others also had Meltdown vulnerabilities, right? It’s not like Intels engineers were unique in their TLB design.
Meltdown is not about the TLB, it's about their CPUs speculating on data that has not passed privilege checks. ARM also managed to screw it up but only on one core. Yes Apple and IBM also messed up. They're all dumbasses, but then Intel went "hold my beer" and L1TF happened.
It’s 100% about when you check privileges in the TLB access pipeline. If you check eagerly you are fine, lazily —> Meltdown.
What I mean is the problem isn't the TLB itself, it's what you do with the data when the TLB hits but you don't pass the privilege check. They should be eagerly dropping/poisoning it instead of steamrolling forward on privileged data.
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