------- Comment From [email protected] 2020-05-13 12:00 EDT------- Hi Frank, so the good news is the backporting seems to require no changes except for fixing the context because the power management was removed upstream. I've now got a system running with the changes backported to focal master-next.
Still it's 13 patches (including my 2 UID / Domain allocation patches we are also tracking in other issues and one for a new port attribute that makes things apply cleanly but I can also remove that). Would you prefer that I send these by mail to you or should I attach them to this issue? -- 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: New 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 : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
