A more technical writeup on what can be done to address #Meltdown and #Spectre in future CPU designs. If there's interest, I can write a longer version with graphics and so on:https://www.linkedin.com/pulse/addressing-meltdown-spectre-future-silicon-jon-masters/ …
No, it's a kernel-level thing or you just have hacks. Inability to safely run existing binaries for the baseline ISA means you're effectively not compatible with the original ISA/ABI... in which case, why stick with x86 at all?
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I agree we *will* have hacks for the forseeable future, but the hacks will be partial mitigations for safety in existing broken chips. New chips need full safety against Spectre variant 1.
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