Messages in this thread | | | Date | Tue, 7 Jun 2022 10:00:38 +0200 | From | Joerg Roedel <> | Subject | Re: [PATCH v2] iommu/amd: Set translation valid bit only when IO page tables are in used |
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On Thu, May 26, 2022 at 10:29:09AM +0700, Suravee Suthikulpanit wrote: > Actually, I am referring to when user uses the IOMMU v2 table for shared virtual address > in current iommu_v2 driver (e.g. amd_iommu_init_device(), amd_iommu_bind_pasid).
From what I can see this is not handled yet and needs an additional check. I think the best solution is to set iommu->iommu_v2 to false when the SNP feature bit is set. But that is probably not enough, all functions that are called from the IOMMUv2 driver need to fail.
Regards,
Joerg
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