I happened to see this bug and want to add one more patch: https://git.kernel.org/cgit/linux/kernel/git/helgaas/pci.git/commit/?h=pci/host-hv&id=60e2e2fbafdd1285ae1b4ad39ded41603e0c74d0
-- 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/1665097 Title: [Hyper-V] SAUCE: pci-hyperv fixes for SR-IOV on Azure Status in linux package in Ubuntu: In Progress Status in linux source package in Xenial: In Progress Bug description: The following two patches to pci-hyperv were submitted upstream but missed getting pulled into Bjorn's tree. They are needed to fix an issue discovered working on SR-IOV on Azure. Patch 1: hv_pci_devices_present is called in hv_pci_remove when we remove a PCI device from host (e.g. by disabling SRIOV on a device). In hv_pci_remove, the bus is already removed before the call, so we don't need to rescan the bus in the workqueue scheduled from hv_pci_devices_present. By introducing status hv_pcibus_removed, we can avoid this situation. Patch 2: A PCI_EJECT message can arrive at the same time we are calling pci_scan_child_bus in the workqueue for the previous PCI_BUS_RELATIONS message or in create_root_hv_pci_bus(), in this case we could potentailly modify the bus from multiple places. Properly lock the bus access. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1665097/+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
