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

[Alexey Kardashevskiy]

On 28/09/2019 04:33, Shawn Anastasio wrote:
> 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.

A bigger change for ppc+pci is coming from Oliver (I guess with your patch as well) which will tackle this one too, soon.


-- 
Alexey