------- Comment From niklas.schne...@ibm.com 2020-05-14 04:19 EDT------- It's now 12. I included the "s390/pci: Fix zpci_alloc_domain() over allocation" commit but that just landed on master-next.
Also I included the one I mentioned in that bugzilla. s390/pci: Improve handling of unset UID Both together allow things to apply more cleanly. Their code is basically replaced by the multi-function series though. As the second wasn't taken I'll include it as part of this series. Then there is an additional documentation only commit: s390/pci: Documentation for zPCI and a one line fixup s390/pci: removes wrong PCI multifunction assignment I'll add all of the patches here as attachments even if they applied clean just so we keep this together. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1874056 Title: [UBUNTU 20.04] s390x/pci: enumerate pci functions per physical adapter Status in Ubuntu on IBM z Systems: Incomplete Status in linux package in Ubuntu: Incomplete Bug description: Today, the enumeration of PCI functions on s390x does not reflect which functions belongs to which physical adapter. Layout of a PCI function address on Linux: 0000:00:00.0 <root complex>:<bus>:<device>.<function> On s390x, each function is presented as individual root complex today, e.g.: PCHID 0100 VF1 0000:00:00.0 PCHID 0100 VF23 0001:00:00.0 PCHID 0200 VF1 0002:00:00.0 OCHID 0100 VF17 0003:00:00.0 On other platforms, the addresses correctly reflect the actual HW configuration. Some device drivers (mlx5 for Mellanox adapters) group functions of one physical adapter by checking which PCI functions have identical values for <root complex>:<bus>:<device>. We need to use the same enumeration scheme to achieve this functionality on s390x. In this case, the two physical functions of a Mellanox adapter need to get function number 0 and 1, and all virtual functions need to use the same <root complex>:<bus> numbers with function/device numbers counting up. Required result (example with 4 VFs per PF): PCHID 0100 PF 0 0000:00:00.0 PCHID 0100 PF 1 0000:00:00.1 PCHID 0100 PF 0 VF 0 0000:00:00.2 PCHID 0100 PF 0 VF 1 0000:00:00.3 PCHID 0100 PF 0 VF 2 0000:00:00.4 PCHID 0100 PF 0 VF 3 0000:00:00.5 PCHID 0100 PF 1 VF 0 0000:00:00.6 PCHID 0100 PF 1 VF 1 0000:00:00.7 PCHID 0100 PF 1 VF 2 0000:00:00.8 PCHID 0100 PF 1 VF 3 0000:00:00.9 PCHID 0200 PF 0 0001:00:00.0 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1874056/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
