[simcop2387]

It's not so much out of order as it is the speculative execution. Predicting a branch and then trying to run the code after the jump while you wait on the branch itself to finish calculating. At least that's my understanding from the papers. This means that otherwise normal out of order techniques like memory load/store reordering and such aren't subject to these particular attacks. I hope that attacks on them aren't found either because those are some of the biggest gains because it can allow better cache coherence and avoid misses, or make the impact of one almost non-existent since it can do other instructions while waiting on a load from system memory.

[dnautics]

My understanding is: Speculative executive is flawed, out of order makes it hard to tell when the errors are going to be really bad.