On Tue, 4 Dec 2018 at 18:06, Eduardo Habkost <ehabk...@redhat.com> wrote: > In either case, I'm still missing a clear description of what a > cluster is supposed to represent, exactly (see my previous reply > on this thread).
Here's my attempt: A cluster is a group of CPUs which are all identical and have the same view of the rest of the system. If CPUs are not identical (for example, Cortex-A53 and Cortex-A57 CPUs in an Arm big.LITTLE system) they should be in different clusters. If the CPUs do not have the same view of memory (for example the main CPU and a management controller processor) they should be in different clusters. I agree that this is slightly confusing, because the concept is on the boundary between something that's real in hardware (eg in a big.LITTLE setup the CPUs are in separate hardware clusters, and of coures a BMC processor and the main CPU are definitely different things) and something that we're defining for its effects on the GDB UI and so we can make sure we don't share TCG translated code where we shouldn't. thanks -- PMM
