Re: [PATCH v2] hw/pci/pci: Enforce pci_setup_iommu_per_bus() is called only once per bus

["Michael S. Tsirkin" <mst@redhat.com>]

On Tue, Jun 16, 2026 at 09:47:55AM +0100, Peter Maydell wrote:
> On Wed, 3 Jun 2026 at 13:44, Eric Auger <eric.auger@redhat.com> wrote:
> >
> > Currently it is possible to attach several arm-smmuv3 devices to the
> > same bus although it is a wrong setup.
> >
> > Change the prototype of pci_setup_iommu_per_bus to pass an error
> > handle. This latter is set when iommu_per_bus is already set and
> > used by the single caller (smmu_base_realize) to report a useful
> > error to the end-user.
> >
> > While at it document pci_setup_iommu_per_bus callback in the header.
> >
> > Fixes: 66d2f665e163 ("hw/arm/virt: Allow user-creatable SMMUv3 dev instantiation")
> > Signed-off-by: Eric Auger <eric.auger@redhat.com>
> > Tested-by: Nathan Chen <nathanc@nvidia.com>
> > Reviewed-by: Shameer Kolothum <skolothumtho@nvidia.com>
> > Reviewed-by: Nicolin Chen <nicolinc@nvidia.com>
> 
> I'll take this into target-arm.next as it's a fix for a function
> that's only used by the arm SMMU.
> 
> thanks
> -- PMM

Pls do.
Acked-by: Michael S. Tsirkin <mst@redhat.com>

-- 
MST