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SubjectRe: [PATCH 0/4] iommu/amd: Force SNP-enabled VFIO domain to 4K page size
From
what commit should this series apply onto?


-evt

On 1/10/23 08:31, Suravee Suthikulpanit wrote:
> To support VFIO pass-through device with SNP-enabled guest, IOMMU needs to
> setup IOMMU page table with matching page size to the RMP. In order for
> the IOMMU driver to setup page table appropriately, it needs to determine:
>
> 1. If an IOMMU domain is a VFIO domain (PATCH 1)
> 2. If an IOMMU domain belongs to an SNP-enabled guest (PATCH 2,3)
> 3. Appropriate page size the IOMMU domain (PATCH 4)
>
> Please note that patch 2/4 is a preparatory patch for an upcoming series
> to support SNP, which implements the call-back for the struct
> amd_iommu_svm_ops.is_snp_guest().
>
> Best Regards,
> Suravee
>
> Suravee Suthikulpanit (4):
> iommu/amd: Introduce Protection-domain flag VFIO
> iommu/amd: Introduce structure amd_iommu_svm_ops.is_snp_guest()
> iommu: Introduce IOMMU call-back for processing struct KVM assigned to
> VFIO
> iommu/amd: Force SNP-enabled VFIO domain to 4K page size
>
> drivers/iommu/amd/amd_iommu_types.h | 3 ++
> drivers/iommu/amd/iommu.c | 45 +++++++++++++++++++++++++++--
> drivers/iommu/iommu.c | 10 +++++++
> drivers/vfio/vfio_main.c | 1 +
> include/linux/amd-iommu.h | 6 ++++
> include/linux/iommu.h | 4 +++
> 6 files changed, 67 insertions(+), 2 deletions(-)
>

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