Merge tag 'iommu-updates-v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux

Pull iommu updates from Joerg Roedel:
 "Core changes:
   - Allow ATS on VF when parent device is identity mapped
   - Optimize unmap path on ARM io-pagetable implementation
   - Use of_property_present()

  ARM-SMMU changes:
   - SMMUv2:
       - Devicetree binding updates for Qualcomm MMU-500 implementations
       - Extend workarounds for broken Qualcomm hypervisor to avoid
         touching features that are not available (e.g. 16KiB page
         support, reserved context banks)
   - SMMUv3:
       - Support for NVIDIA's custom virtual command queue hardware
       - Fix Stage-2 stall configuration and extend tests to cover this
         area
       - A bunch of driver cleanups, including simplification of the
         master rbtree code
   - Minor cleanups and fixes across both drivers

  Intel VT-d changes:
   - Retire si_domain and convert to use static identity domain
   - Batched IOTLB/dev-IOTLB invalidation
   - Small code refactoring and cleanups

  AMD-Vi changes:
   - Cleanup and refactoring of io-pagetable code
   - Add parameter to limit the used io-pagesizes
   - Other cleanups and fixes"

* tag 'iommu-updates-v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux: (77 commits)
  dt-bindings: arm-smmu: Add compatible for QCS8300 SoC
  iommu/amd: Test for PAGING domains before freeing a domain
  iommu/amd: Fix argument order in amd_iommu_dev_flush_pasid_all()
  iommu/amd: Add kernel parameters to limit V1 page-sizes
  iommu/arm-smmu-v3: Reorganize struct arm_smmu_ctx_desc_cfg
  iommu/arm-smmu-v3: Add types for each level of the CD table
  iommu/arm-smmu-v3: Shrink the cdtab l1_desc array
  iommu/arm-smmu-v3: Do not use devm for the cd table allocations
  iommu/arm-smmu-v3: Remove strtab_base/cfg
  iommu/arm-smmu-v3: Reorganize struct arm_smmu_strtab_cfg
  iommu/arm-smmu-v3: Add types for each level of the 2 level stream table
  iommu/arm-smmu-v3: Add arm_smmu_strtab_l1/2_idx()
  iommu/arm-smmu-qcom: apply num_context_bank fixes for SDM630 / SDM660
  iommu/arm-smmu-v3: Use the new rb tree helpers
  dt-bindings: arm-smmu: document the support on SA8255p
  iommu/tegra241-cmdqv: Do not allocate vcmdq until dma_set_mask_and_coherent
  iommu/tegra241-cmdqv: Drop static at local variable
  iommu/tegra241-cmdqv: Fix ioremap() error handling in probe()
  iommu/amd: Do not set the D bit on AMD v2 table entries
  iommu/amd: Correct the reported page sizes from the V1 table
  ...

1 files changed, 11 insertions, 6 deletions

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index bfc27d1bf4ed..8337d0fed311 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -333,12 +333,17 @@
 					  allowed anymore to lift isolation
 					  requirements as needed. This option
 					  does not override iommu=pt
-			force_enable - Force enable the IOMMU on platforms known
-				       to be buggy with IOMMU enabled. Use this
-				       option with care.
-			pgtbl_v1     - Use v1 page table for DMA-API (Default).
-			pgtbl_v2     - Use v2 page table for DMA-API.
-			irtcachedis  - Disable Interrupt Remapping Table (IRT) caching.
+			force_enable    - Force enable the IOMMU on platforms known
+				          to be buggy with IOMMU enabled. Use this
+				          option with care.
+			pgtbl_v1        - Use v1 page table for DMA-API (Default).
+			pgtbl_v2        - Use v2 page table for DMA-API.
+			irtcachedis     - Disable Interrupt Remapping Table (IRT) caching.
+			nohugepages     - Limit page-sizes used for v1 page-tables
+				          to 4 KiB.
+			v2_pgsizes_only - Limit page-sizes used for v1 page-tables
+				          to 4KiB/2Mib/1GiB.
+
 
 	amd_iommu_dump=	[HW,X86-64]
 			Enable AMD IOMMU driver option to dump the ACPI table