Messages in this thread | | | Date | Thu, 12 May 2022 08:51:01 -0300 | From | Jason Gunthorpe <> | Subject | Re: [PATCH v6 03/12] iommu: Add attach/detach_dev_pasid domain ops |
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On Thu, May 12, 2022 at 08:00:59AM +0100, Jean-Philippe Brucker wrote:
> > It is not "missing" it is just renamed to blocking_domain->ops->set_dev_pasid() > > > > The implementation of that function would be identical to > > detach_dev_pasid. > > attach(dev, pasid, sva_domain) > detach(dev, pasid, sva_domain) > > versus > > set_dev_pasid(dev, pasid, sva_domain) > set_dev_pasid(dev, pasid, blocking) > > we loose the information of the domain previously attached, and the SMMU > driver has to retrieve it to find the ASID corresponding to the mm.
It would be easy to have the old domain be an input as well - the core code knows it.
Jason
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