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

On 9/9/19 2:59 AM, Alexey Kardashevskiy wrote:

quoted

On 06/09/2019 05:13, Shawn Anastasio wrote:

quoted

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