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I'm just going to point out that the people involved in coordinating disclosure on Meltdown/Spectre have done a terrible job of agreeing on names/categories for the various bugs and CPU impact. Even post-disclosure there's still a mess of speculation on what bug affects what CPUs
The academics call them Meltdown/Spectre, Google calls them Variant 1-3 (each with a CVE), and there's no good matrix of what bug affects what (which CPUs, kernel leaks, same-context leaks, cross-process leaks, etc).
The Spectre paper claims ARM is impacted but gives zero details beyond "initial testing has confirmed that ARM processors are impacted as well". WTF does that even mean? Which processors and which exploit scenario?
Hyperthreading is also very important for these attacks due to sharing execution resources, and yet it isn't being mentioned enough.
The website (https://meltdownattack.com ) claims that Meltdown is only verified on Intel, but Spectre has been verified on Intel, AMD, and ARM
Spectre isn't even one problem/attack, it's two (or more). Putting both under the same name was stupid.
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