diff options
| author | Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> | 2026-01-15 06:08:06 +0000 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2026-01-18 10:56:12 +0100 |
| commit | e05698c10d980ac0a0b57ed81ec9353b9e9533c6 (patch) | |
| tree | ec341c690baef0e353a102f91392eb85a91928a3 /include | |
| parent | 9b467a5af856dce9aba17bb6db3ed34ed79f5d90 (diff) | |
iommufd: Introduce data struct for AMD nested domain allocation
Introduce IOMMU_HWPT_DATA_AMD_GUEST data type for IOMMU guest page table,
which is used for stage-1 in nested translation. The data structure
contains information necessary for setting up the AMD HW-vIOMMU support.
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Nicolin Chen <nicolinc@nvidia.com>
Reviewed-by: Vasant Hegde <vasant.hegde@amd.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/linux/iommufd.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/uapi/linux/iommufd.h b/include/uapi/linux/iommufd.h index 3db37f6042a0..1dafbc552d37 100644 --- a/include/uapi/linux/iommufd.h +++ b/include/uapi/linux/iommufd.h @@ -466,15 +466,26 @@ struct iommu_hwpt_arm_smmuv3 { }; /** + * struct iommu_hwpt_amd_guest - AMD IOMMU guest I/O page table data + * (IOMMU_HWPT_DATA_AMD_GUEST) + * @dte: Guest Device Table Entry (DTE) + */ +struct iommu_hwpt_amd_guest { + __aligned_u64 dte[4]; +}; + +/** * enum iommu_hwpt_data_type - IOMMU HWPT Data Type * @IOMMU_HWPT_DATA_NONE: no data * @IOMMU_HWPT_DATA_VTD_S1: Intel VT-d stage-1 page table * @IOMMU_HWPT_DATA_ARM_SMMUV3: ARM SMMUv3 Context Descriptor Table + * @IOMMU_HWPT_DATA_AMD_GUEST: AMD IOMMU guest page table */ enum iommu_hwpt_data_type { IOMMU_HWPT_DATA_NONE = 0, IOMMU_HWPT_DATA_VTD_S1 = 1, IOMMU_HWPT_DATA_ARM_SMMUV3 = 2, + IOMMU_HWPT_DATA_AMD_GUEST = 3, }; /** |