On 2018-02-27 11:08:56 [-0600], Gary R Hook wrote: > That issue remains unclear to me: Are probes of PCI devices guaranteed to be > serialized? Observations on my CCPs says that they occur in order, but I > don't know for certain that serialization is guaranteed. > > Is there a definitive statement on this somewhere that I just don't know > about? So the question if a driver can probe two devices simultaneously. I'm not sure. We have PROBE_PREFER_ASYNCHRONOUS which defers the probe to worker. However I have no idea if two of those worker can run at the same time. > I think a mutex would be just fine; I got this wrong, clearly. Let me work > up a patch using a mutex. I've sent one. Why not just ack it and be done with it? > Gary Sebastian
