On Wed, Mar 16, 2022 at 10:23:26PM +0000, Luck, Tony wrote: > Kernel users (ring0) can supply any PASID when they use > the ENQCMDS instruction. Is that what you mean when you > say "real applications"?
I'm not talking about ENQCMD at all I'm saying I don't see much utility to have two PASIDs assigned to the same device that perform the same IOVA translation. So I would expect the list of attachments in an iommu_domain to have exactly one device in it and multiple PASIDs to the same device from the same iommu_domain is a oddball corner case we don't need to optimize for, beyond being able to allow it to happen. Jason _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
