[PATCH v2 1/1] powerpc/pci: Fix pcibios_setup_device() ordering

[Shawn Anastasio]

On 9/9/19 2:59 AM, Alexey Kardashevskiy wrote:
> 
> 
> On 06/09/2019 05:13, Shawn Anastasio wrote:
>> Move PCI device setup from pcibios_add_device() and pcibios_fixup_bus() to
>> pcibios_bus_add_device(). This ensures that platform-specific DMA and IOMMU
>> setup occurs after the device has been registered in sysfs, which is a
>> requirement for IOMMU group assignment to work
>>
>> This fixes IOMMU group assignment for hotplugged devices on pseries, where
>> the existing behavior results in IOMMU assignment before registration.
> 
> 
> Although this is a correct approach which we should proceed with, this
> breaks adding of SRIOV VFs from pnv_tce_iommu_bus_notifier (and possibly
> the bare metal PCI hotplug), I am trying to fix that now...

Were you able to make any progress? I can think of a couple of ways
to fix SRIOV, but they're not particularly elegant and involve
duplication.