On: AMD Zen 2 Microarchitecture Analysis: Ryzen 3000 and EPYC Rome

[caspper69]

Google's researchers played a big part in discovering / classifying / mitigating the vulnerabilities. They also developed the retpoline pattern. It is very likely that GCP was "fixed before it was known."

[rat9988 → caspper69]

Indeed, this is why it's unlikely that hey have the patched microcode.

[dijit → rat9988]

How do you figure that?

They have much to lose from not applying these mitigations, especially if they're the people spending a fortune to find them.

[y4mi → dijit]

If the grand-parents claim holds, they wouldn't have needed it because they already implemented a workaround themselves.

I honestly doubt that claim however and haven't heard it before this thread.