Messages in this thread | ![/](/images/icornerl.gif) | | Date | Mon, 16 Jan 2023 07:17:38 -0600 | Subject | Re: [PATCH 0/4] iommu/amd: Force SNP-enabled VFIO domain to 4K page size | From | Eric van Tassell <> |
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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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