linux/arch
Linus Torvalds d076a8d3b9 IOMMU Updates for Linux v7.2
Including:
 
 Core Code:
 
   - Fix dma-iommu scatterlist length handling in the P2PDMA path.
 
   - Extend the generic IOMMU page-table code with detailed gather
     support for more precise invalidations.
 
   - Add pending-gather tracking to generic page-table invalidation
     handling.
 
   - Add support for smaller virtual address sizes in the generic AMDv1
     page-table format, including KUnit coverage.
 
   - Fix page-size bitmap calculation for smaller VA configurations.
 
   - Rework Arm io-pgtable allocation/freeing to consistently use the
     iommu-pages API and address-conversion helpers.
 
   - Add PCI ATS infrastructure for devices that require ATS, including
     always-on ATS handling for pre-CXL devices.
 
 AMD IOMMU:
 
   - Fix several IOTLB invalidation details, including PDE handling,
     flush-all behavior, and command address encoding.
 
   - Honor IVINFO[VASIZE] when deriving address limits.
 
   - Fix premature loop termination in init_iommu_one().
 
   - Add Hygon family 18h model 4h IOAPIC support.
 
   - Clean up legacy-mode handling, stale comments, dead IVMD
     exclusion-range code, and unused address-size macros.
 
 Arm SMMU / Arm SMMU v3:
 
   - SMMUv2:
     - Device-tree binding updates for Qualcomm Hawi, Nord and Shikra
       SoCs.
     - Constain the clocks which can be specified for recent Qualcomm
       SoCs.
     - Fix broken compatible string for Qualcomm prefetcher
       configuration an add new entry for the Glymur MDSS.
     - Ensure SMMU is powered-up when writing context bank for Adreno
       client.
 
   - SMMUv3:
     - Fix off-by-one in queue allocation retry loop.
     - Enable hardware update of access/dirty bits from the SMMU.
     - Re-jig command construction to use separate inline helpers for
       each command type.
 
 Intel VT-d:
 
   - Add the PCI segment number to DMA fault messages.
 
   - Improve support for non-PRI mode SVA.
 
   - Ensure atomicity during context entry teardown.
 
   - Fix RB-tree corruption in the probe error path.
 
 RISC-V IOMMU:
 
   - Add NAPOT range invalidation support.
 
   - Use detailed gather information for invalidation decisions.
 
   - Compute the best stride for single invalidations.
 
   - Advertise Svpbmt support to the generic page-table code.
 
   - Add capability definitions and clean up command macro encoding.
 
 VeriSilicon IOMMU:
 
   - Add a new VeriSilicon IOMMU driver.
 
   - Add devicetree binding documentation and MAINTAINERS coverage.
 
   - Add the RK3588 VeriSilicon IOMMU node.
 
   - Apply small cleanups and warning fixes in the new driver.
 
 Rockchip IOMMU:
 
   - Disable the fetch DTE time limit.
 
 Apple DART:
 
   - Correct a stale CONFIG_PCIE_APPLE macro name in a comment.
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Merge tag 'iommu-updates-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux

Pull iommu updates from Joerg Roedel:
 "Core Code:

   - Fix dma-iommu scatterlist length handling in the P2PDMA path

   - Extend the generic IOMMU page-table code with detailed gather
     support for more precise invalidations

   - Add pending-gather tracking to generic page-table invalidation
     handling

   - Add support for smaller virtual address sizes in the generic AMDv1
     page-table format, including KUnit coverage

   - Fix page-size bitmap calculation for smaller VA configurations

   - Rework Arm io-pgtable allocation/freeing to consistently use the
     iommu-pages API and address-conversion helpers

   - Add PCI ATS infrastructure for devices that require ATS, including
     always-on ATS handling for pre-CXL devices

  AMD IOMMU:

   - Fix several IOTLB invalidation details, including PDE handling,
     flush-all behavior, and command address encoding

   - Honor IVINFO[VASIZE] when deriving address limits

   - Fix premature loop termination in init_iommu_one()

   - Add Hygon family 18h model 4h IOAPIC support

   - Clean up legacy-mode handling, stale comments, dead IVMD
     exclusion-range code, and unused address-size macros

  Arm SMMU / Arm SMMU v3:

   - SMMUv2:
      - Device-tree binding updates for Qualcomm Hawi, Nord and Shikra
        SoCs
      - Constrain the clocks which can be specified for recent Qualcomm
        SoCs
      - Fix broken compatible string for Qualcomm prefetcher
        configuration an add new entry for the Glymur MDSS
      - Ensure SMMU is powered-up when writing context bank for Adreno
        client

   - SMMUv3:
      - Fix off-by-one in queue allocation retry loop
      - Enable hardware update of access/dirty bits from the SMMU
      - Re-jig command construction to use separate inline helpers for
        each command type

  Intel VT-d:

   - Add the PCI segment number to DMA fault messages

   - Improve support for non-PRI mode SVA

   - Ensure atomicity during context entry teardown

   - Fix RB-tree corruption in the probe error path

  RISC-V IOMMU:

   - Add NAPOT range invalidation support

   - Use detailed gather information for invalidation decisions

   - Compute the best stride for single invalidations

   - Advertise Svpbmt support to the generic page-table code

   - Add capability definitions and clean up command macro encoding

  VeriSilicon IOMMU:

   - Add a new VeriSilicon IOMMU driver

   - Add devicetree binding documentation and MAINTAINERS coverage

   - Add the RK3588 VeriSilicon IOMMU node

   - Apply small cleanups and warning fixes in the new driver

  Rockchip IOMMU:

   - Disable the fetch DTE time limit

  Apple DART:

   - Correct a stale CONFIG_PCIE_APPLE macro name in a comment"

* tag 'iommu-updates-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux: (66 commits)
  iommu/dma-iommu: Fix wrong scatterlist length assignment in P2PDMA path
  iommu/amd: Control INVALIDATE_IOMMU_PAGES PDE from the gather
  iommu/amd: Make CMD_INV_IOMMU_ALL_PAGES_ADDRESS match the spec
  iommu/amd: Have amd_iommu_domain_flush_pages() use last
  iommu/amd: Pass last in through to build_inv_address()
  iommu/amd: Simplify build_inv_address()
  iommu/apple-dart: correct CONFIG_PCIE_APPLE macro name in comment
  iommu/vt-d: Fix RB-tree corruption in probe error path
  iommu/vt-d: Improve IOMMU fault information
  iommu/vt-d: Remove typo from pasid_pte_config_nested()
  iommu/vt-d: Clear Present bit before tearing down scalable-mode context entry
  iommu/vt-d: Avoid WARNING in sva unbind path
  dt-bindings: arm-smmu: Correct and add constraints for Hawi, Shikra and Kaanapali
  dt-bindings: arm-smmu: Add compatible for Qualcomm Nord SoC
  iommu/amd: Don't split flush for amd_iommu_domain_flush_all()
  iommu/rockchip: disable fetch dte time limit
  iommu/arm-smmu-v3: Allow ATS to be always on
  PCI: Allow ATS to be always on for pre-CXL devices
  PCI: Add pci_ats_required() for CXL.cache capable devices
  iommu/vsi: Use list_for_each_entry()
  ...
2026-06-17 12:24:50 -07:00
..
alpha fbdev fixes & cleanups for 7.2-rc1: 2026-06-16 08:28:41 +05:30
arc Linux 7.1-rc5 2026-05-25 02:40:57 +02:00
arm soc: arm code changes for 7.2 2026-06-17 11:28:10 -07:00
arm64 IOMMU Updates for Linux v7.2 2026-06-17 12:24:50 -07:00
csky ring-buffer: Flush and stop persistent ring buffer on panic 2026-05-21 08:20:58 -04:00
hexagon ring-buffer: Flush and stop persistent ring buffer on panic 2026-05-21 08:20:58 -04:00
loongarch bitmap updates for v7.2 2026-06-17 11:38:38 +01:00
m68k m68knommu: updates and fixes for v7.2 2026-06-17 11:34:05 -07:00
microblaze ring-buffer: Flush and stop persistent ring buffer on panic 2026-05-21 08:20:58 -04:00
mips bitmap updates for v7.2 2026-06-17 11:38:38 +01:00
nios2 NIOS2: updates for v7.2 2026-05-23 09:21:08 -07:00
openrisc ring-buffer: Flush and stop persistent ring buffer on panic 2026-05-21 08:20:58 -04:00
parisc Networking changes for 7.2. 2026-06-17 08:17:00 +01:00
powerpc bpf-next-7.2 2026-06-17 09:18:14 +01:00
riscv soc: devicetree updates for 7.2 2026-06-17 11:16:56 -07:00
s390 bpf-next-7.2 2026-06-17 09:18:14 +01:00
sh Networking changes for 7.2. 2026-06-17 08:17:00 +01:00
sparc Networking changes for 7.2. 2026-06-17 08:17:00 +01:00
um Locking updates for v7.2: 2026-06-15 14:21:14 +05:30
x86 bitmap updates for v7.2 2026-06-17 11:38:38 +01:00
xtensa Interrupt core code changes: 2026-06-15 13:19:41 +05:30
.gitignore
Kconfig Locking updates for v7.2: 2026-06-15 14:21:14 +05:30