From: Liu, Jingqi jingqi.liu@intel.com Sent: Wednesday, March 15, 2023 9:51 PM
On 3/9/2023 4:22 PM, Yi Liu wrote:
Add the following data structures for corresponding ioctls: iommu_hwpt_intel_vtd => IOMMU_HWPT_ALLOC iommu_hw_info_vtd => IOMMU_DEVICE_GET_HW_INFO iommu_hwpt_invalidate_intel_vtd => IOMMU_HWPT_INVALIDATE
Also, add IOMMU_HW_INFO_TYPE_INTEL_VTD and
IOMMU_HWPT_TYPE_VTD_S1 to the
header and corresponding type/size arrays.
Signed-off-by: Yi Liu yi.l.liu@intel.com
drivers/iommu/iommufd/hw_pagetable.c | 7 +- drivers/iommu/iommufd/main.c | 5 + include/uapi/linux/iommufd.h | 136
+++++++++++++++++++++++++++
3 files changed, 147 insertions(+), 1 deletion(-)
[...]
+/**
- struct iommu_hwpt_intel_vtd - Intel VT-d specific user-managed
stage-1 page table info
- @flags: Combination of enum iommu_hwpt_intel_vtd_flags
- @pgtbl_addr: The base address of the user-managed stage-1 page
table.
- @pat: Page attribute table data to compute effective memory type
- @emt: Extended memory type
- @addr_width: The address width of the untranslated addresses that
are
subjected to the user-managed stage-1 page table.
- @__reserved: Must be 0
- The Intel VT-d specific data for creating hw_pagetable to represent
- the user-managed stage-1 page table that is used in nested translation.
- In nested translation, the stage-1 page table locates in the address
- space that defined by the corresponding stage-2 page table. Hence
the
- stage-1 page table base address value should not be higher than the
- maximum untranslated address of stage-2 page table.
- The paging level of the stage-1 page table should be compataible with
s/compataible/compatible
- the hardware iommu. Otherwise, the allocation would be failed.
- */
+struct iommu_hwpt_intel_vtd {
- __u64 flags;
- __u64 pgtbl_addr;
- __u32 pat;
- __u32 emt;
- __u32 addr_width;
- __u32 __reserved; };
[...]
+/**
- struct iommu_hwpt_invalidate_intel_vtd - Intel VT-d cache
invalidation info
- @granularity: One of enum iommu_vtd_qi_granularity.
- @flags: Combination of enum
iommu_hwpt_intel_vtd_invalidate_flags
- @__reserved: Must be 0
- @addr: The start address of the addresses to be invalidated.
- @granule_size: Page/block size of the mapping in bytes. It is used to
compute the invalidation range togehter with @nb_granules.s/togehter/together
All above received. Thanks.
Regards, Yi Liu