Joerg,
On 5/20/22 3:09 PM, Joerg Roedel wrote:
Hi Suravee,
On Mon, May 16, 2022 at 07:27:51PM +0700, Suravee Suthikulpanit wrote:
- Also, it seems that the current iommu v2 page table use case, where
GVA->GPA=SPA
will no longer be supported on system w/ SNPSup=1. Any thoughts?
Support for that is not upstream yet, it should be easy to disallow this
configuration and just use the v1 page-tables when SNP is active. This
can be handled entirely inside the AMD IOMMU driver.
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).
Best Regards,
Suravee
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