Thank you for your reply！ My pc has the PASID capability, See the attachment. " I don't think the AMD iommu driver has supported the set_dev_pasid callback for the non-SVA domains." ------ xuemei : So if I want to use the PASID to test PCIE ATS request messages,could you give some suggestions ? usr SVA domain can solve thie issue ? -----Original Message----- From: Yi Liu <yi.l.liu@xxxxxxxxx> Sent: 2024年7月23日 11:04 To: XueMei Yue <xuemeiyue@xxxxxxxxxx>; iommu@xxxxxxxxxxxxxxx; alex.williamson@xxxxxxxxxx; robin.murphy@xxxxxxx; eric.auger@xxxxxxxxxx; nicolinc@xxxxxxxxxx; kvm@xxxxxxxxxxxxxxx; chao.p.peng@xxxxxxxxxxxxxxx; baolu.lu@xxxxxxxxxxxxxxx; joro@xxxxxxxxxx; Suravee Suthikulpanit <suravee.suthikulpanit@xxxxxxx> Subject: Re: FW: About the patch ”https://lore.kernel.org/linux-iommu/20240412082121.33382-1-yi.l.liu@xxxxxxxxx/ “ for help CAUTION: This email originated from outside of PetaIO. Do not click on links or open attachments unless you recognize the sender and know that the content is safe. On 2024/7/23 10:52, XueMei Yue wrote: > DEAR ALL , > > No I have know the root cause , the issue ouccured when below code run my AMD test PC. > > So could you guys give some suggestion ? Will very much appreciate > if you feel free to reply！！ > > [cid:image001.png@01DADCEE.6F2E3F80] For the people that cannot see the picture. It shows the pasid attach path failed as the domain->ops->set_dev_pasid is null, hence failed with EOPNOTSUPP errno. I don't think the AMD iommu driver has supported the set_dev_pasid callback for the non-SVA domains. Suravee can keep me honest. And you may also need to check if your test PC has the PASID capability. -- Regards, Yi Liu
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