On Mon, 3 Dec 2018 at 11:21, Luc Michel <luc.mic...@greensocs.com> wrote: > > On 11/30/18 5:52 PM, Peter Maydell wrote: > > Luc: what are the requirements on boards using CPU cluster > > objects? I assume these are both OK: > > * does not use cluster objects at all > > (the gdbstub puts all the CPUs in one process?) > Yes, when no clusters are found, a process with PID 1 is created and > used for all CPUs. > > * all CPUs created are in some CPU cluster > > (the gdbstub uses one process per CPU cluster) > > but what about > > * some CPUs are created in a CPU cluster, but some > > are "loose", not in any cluster at all> ? > > Is that just invalid, or do the "loose" CPUs end up in > > a default cluster (gdbstub process), or do they get > > one cluster each? > Currently this is valid and the "loose" CPUs end up in the first > available process (which will be PID 1 if we are in your first case, > i.e. no clusters in the machine).
So if there are some defined clusters 1 and 2, and some loose CPUs, the clusters get PID 1 and PID 2, and the loose CPUs end up in PID 3? That seems reasonable. thanks -- PMM
