On Thu, 4 Jan 2018, Alan Cox wrote: > You never go from one user process to another except via the kernel. We > have no hardware scheduling going on. That means that if the kernel > and/or CPU imposes the correct speculation barriers you can't attack > anyone but yourself. So how does this work on HT with the shared BTB? There is no context switch (and hence no IBPB) happening between the threads sharing it. -- Jiri Kosina SUSE Labs
