diff options
| author | Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> | 2026-01-15 06:08:02 +0000 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2026-01-18 10:56:09 +0100 |
| commit | 7d8b06ecc45bd679dec58d2cc2bd86223d4e076d (patch) | |
| tree | 561a1c10f43260fffb1ed667499231192a4642f2 /include/uapi/linux/io_uring | |
| parent | 2e666595651ba02128b13e9029d5248cfc2fb702 (diff) | |
iommu/amd: Add support for hw_info for iommu capability query
AMD IOMMU Extended Feature (EFR) and Extended Feature 2 (EFR2) registers
specify features supported by each IOMMU hardware instance.
The IOMMU driver checks each feature-specific bits before enabling
each feature at run time.
For IOMMUFD, the hypervisor passes the raw value of amd_iommu_efr and
amd_iommu_efr2 to VMM via iommufd IOMMU_DEVICE_GET_HW_INFO ioctl.
Reviewed-by: Nicolin Chen <nicolinc@nvidia.com>
Reviewed-by: Vasant Hegde <vasant.hegde@amd.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'include/uapi/linux/io_uring')
0 files changed, 0 insertions, 0 deletions