On Thu, 2020-04-16 at 17:56 +0200, Boris Fiuczynski wrote: > Note that the PCI bridge is not visible in the guest; s390x always has a flat > -topology. > +topology. Also ``fid`` does not define slot or function of the PCI address. This sentence is unnecessary, since you explain what fid does just a few lines later. > will result in the exactly same view in the guest, as the addresses there > -are generated from the information provided via the ``zpci`` element (in > -fact, from the ``uid``). > +are generated from the information provided via the ``zpci`` element: > +the ``uid`` is used as PCI domain, and the ``fid`` is used as the PCI devices > +slot in the sysfs. I think we need to be a bit more verbose to make sure we don't confuse the reader, or better yet avoid mentioning "PCI slot" altogether because the terminology is ambiguous. Something like [...] are generated from the information provided via the ``zpci`` element: more specifically, ``uid`` is used as the PCI domain. ``fid`` doesn't appear in the PCI address itself, but it will be used in sysfs (``/sys/bus/pci/slots/$fid/...``). -- Andrea Bolognani / Red Hat / Virtualization