Messages in this thread | | | Date | Tue, 8 Aug 2023 12:19:14 -0300 | From | Jason Gunthorpe <> | Subject | Re: [PATCH 4/5] iommu: Support mm PASID 1:n with sva domains |
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On Tue, Aug 08, 2023 at 12:12:42PM -0300, Jason Gunthorpe wrote:
> Lets please rework this function into two parts > > The first should be 'iommu_sva_alloc_domain()' > > It should do the list searching and user management. The usual > 'iommu_domain_free()' should be modified to clean it up.
I suppose we can't quite do this fully since the domain allocation needs to use set_dev_pasid to detect compatability :( This is a similar problem we had with iommufd too.
Still, the 'alloc and set_dev_pasid' should be in one function and it should be undone with iommu_detach_device_pasid() and iommu_domain_free().
The helper bind/unbind functions should wrapper that sequence.
Jason
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