Messages in this thread | | | Date | Thu, 23 Mar 2023 08:31:16 -0300 | From | Jason Gunthorpe <> | Subject | Re: [PATCH v2] vhost/vdpa: Add MSI translation tables to iommu for software-managed MSI |
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On Thu, Mar 23, 2023 at 05:22:36PM +0800, Nanyong Sun wrote: > > A patch to export that function is alread posted: > > > > https://lore.kernel.org/linux-iommu/BN9PR11MB52760E9705F2985EACCD5C4A8CBA9@BN9PR11MB5276.namprd11.prod.outlook.com/T/#u > > > > But I do not want VDPA to mis-use it unless it also implements all the > > ownership stuff properly. > >
> I want to confirm if we need to introduce iommu group logic to vdpa, as "all > the ownership stuff" ?
You have to call iommu_device_claim_dma_owner()
But again, this is all pointless, iommufd takes are of all of this and VDPA should switch to it instead of more hacking.
Jason
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