[wolfgke]

> What part of the paper do you take issue with?

There exists no Mill CPU - just software models of it at best.

[gbrown_]

Do you not think it's reasonable to believe that the Mill is immune to these flaws without hardware given the information presented in this paper?

[wolfgke]

It is plausible, but without having a concrete CPU on which independent researchers are able to do independent tests I am rather cautious.

Intel, AMD and ARM also claimed that the branch prediction on their CPUs cannot in practise be used to generate a side channel - Spectre proved otherwise.