Re: [PATCH] iommu/s390: tolerate repeat attach_dev calls

[Niklas Schnelle]

On Thu, 2022-05-19 at 14:29 -0400, Matthew Rosato wrote:
> Since commit 0286300e6045 ("iommu: iommu_group_claim_dma_owner() must
> always assign a domain") s390-iommu will get called to allocate multiple
> unmanaged iommu domains for a vfio-pci device -- however the current
> s390-iommu logic tolerates only one.  Recognize that multiple domains can
> be allocated and handle switching between DMA or different iommu domain
> tables during attach_dev.
> 
> Signed-off-by: Matthew Rosato <mjrosato@xxxxxxxxxxxxx>
> ---

I know it's applied already and no need to add my R-b but:

Reviewed-by: Niklas Schnelle <schnelle@xxxxxxxxxxxxx>