Hi Bjorn, this is a follow-up to my previous RFC of exposing our s390 specific UID Checking attribute at /sys/bus/pci/zpci/unique_uids. As suggested by Greg (thanks!) this version changes things to use named attributes directly without resorting to any raw kobject handling, as a result the code moves to drivers/pci/pci-sysfs.c with a CONFIG_S390 ifdef. Also I've changed the wording to be more restrictive about what this attribute means. Instead of directly calling out its current use to determine if UIDs are used as PCI domains it now only explicitly claims that /sys/bus/pci/devices/<dev>/uid is guaranteed to be a unique user-defined (in the zVM/KVM/LPAR configuration not Linux user-space) identifier for the PCI function. We've had some more internal discussion on this and are also considering to instead put this attribute at /sys/firmware/zpci/unique_uids but as far as I can see this strictly requires the use of raw kobject handling and loses us the direct relation with PCI so I wanted to give this just one more shot and get your opinion on it. Thanks, Niklas Niklas Schnelle (1): PCI: Add s390 specific UID uniqueness attribute Documentation/ABI/testing/sysfs-bus-pci | 9 +++++++++ drivers/pci/pci-sysfs.c | 21 +++++++++++++++++++++ 2 files changed, 30 insertions(+) -- 2.17.1
