The GoFetch attack demonstrates (yet again) that trying to combat microarchitectural attacks leads nowhere, other than making the hardware more complex (and thus buggy).
In contrast, we have demonstrated years ago time protection as a principled pervention of such attacks. Needless to say, time protection defeats GoFetch.
Read more on my blog: https://microkerneldude.org/2024/04/18/gofetch-will-people-ever-learn/