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Something about the AMD implementation is notably harder to exploit, though last I looked it wasn't clear what that was. It's held up much better, and a lot of
by altusbrown 5y ago
Something about the AMD implementation is notably harder to exploit, though last I looked it wasn't clear what that was. It's held up much better, and a lot of people have looked at it.
Still exploits, but almost impossible to do in the field last I checked, where Intel has been demonstrated on live systems handling production load.
- to11mtm 5y agoIt's difficult to say why AMD's implementation has held up better. One interesting thing I noted looking at wikichip's info [0] was that Zen calls out that Cache is tagged by thread. I wonder whether Intel's HT did/does the same or not. [0] https://en.wikichip.org/wiki/amd/microarchitectures/zen#Simultaneous_MultiThreading_.28SMT.29 https://en.wikichip.org/wiki/amd/microarchitectures/zen#Simu...