iommu subsystem · Maintained

Maintainers

• M Joerg Roedel <joro@8bytes.org>
• M Will Deacon <will@kernel.org>
• R Robin Murphy <robin.murphy@arm.com>

Paths

• F Documentation/devicetree/bindings/iommu/
• F drivers/iommu/
• F include/linux/iommu.h
• F include/linux/iova.h
• F include/linux/of_iommu.h
• F rust/kernel/iommu/

Last 30 days

Most active threads (last 7 days)

• HOTtoday [PATCH] dt-bindings: iommu: ti,omap-iommu: Convert to DT schema
  2026-07-07 20:43 · 0 replies in 7d · Bhargav Joshi <hidden>
• HOTtoday [PATCH v3 0/6] iommu/arm-smmu: Add interconnect bandwidth voting support
  2026-07-06 16:57 · 2 replies in 7d · Bibek Kumar Patro <hidden>
• HOTtoday [RFC PATCH 00/13] Enable LPAC on a7xx series GPUs
  2026-07-05 19:14 · 3 replies in 7d · Anna Maniscalco <hidden>
• HOTtoday [PATCH v5 0/7] drm/msm: Add support for Shikra GPU (A704)
  2026-07-06 21:05 · 1 reply in 7d · Akhil P Oommen <akhilpo@oss.qualcomm.com>
• HOTtoday [PATCH v3 00/20] driver core: count references of the platform device's fwnode, not OF node
  2026-07-06 12:45 · 1 reply in 7d · Bartosz Golaszewski <hidden>
• HOTtoday [PATCH 0/8] drm/msm: Support for Eliza GPU
  2026-07-05 08:15 · 1 reply in 7d · Akhil P Oommen <akhilpo@oss.qualcomm.com>
• WARM1d [PATCH v4 0/9] drm/msm: Add support for Shikra GPU (A704)
  2026-07-03 20:35 · 1 reply in 7d · Akhil P Oommen <akhilpo@oss.qualcomm.com>
• WARM2d [PATCH v3] dt-bindings: arm-smmu: qcom: Add compatible for Maili SoC
  2026-07-03 07:50 · 0 replies in 7d · Jingyi Wang <hidden>

Active reviewers (last 30 days)

• Krzysztof Kozlowski <hidden>
  4 attestations (4 Reviewed-by) · last on 2026-07-06
• Robin Murphy <robin.murphy@arm.com>
  2 attestations (2 Acked-by) · last on 2026-07-06
• Andy Shevchenko <andriy.shevchenko@linux.intel.com>
  1 attestation (1 Reviewed-by) · last on 2026-07-06
• Nicolin Chen <hidden>
  1 attestation (1 Reported-by) · last on 2026-06-22
• Vishnu Reddy <hidden>
  1 attestation (1 Reviewed-by) · last on 2026-06-10
• Dmitry Baryshkov <hidden>
  1 attestation (1 Reviewed-by) · last on 2026-06-10

Recent patches

Most-recent 30 patches in this subsystem on linux-devicetree (capped at 30), ordered by date desc.

• HOTtoday [PATCH] dt-bindings: iommu: ti,omap-iommu: Convert to DT schema
  2026-07-07 · Bhargav Joshi <hidden>
• HOTtoday REVIEWED: 1 (0M) [PATCH v5 3/7] dt-bindings: arm-smmu: Document GPU SMMU for Shikra SoC
  2026-07-06 · Akhil P Oommen <akhilpo@oss.qualcomm.com>
• HOTtoday [PATCH v3 2/6] iommu/arm-smmu: Add interconnect bandwidth voting support
  2026-07-06 · Bibek Kumar Patro <hidden>
• HOTtoday REVIEWED: 1 (0M) [PATCH v3 1/6] dt-bindings: iommu: arm,smmu: Document interconnects property
  2026-07-06 · Bibek Kumar Patro <hidden>
• HOTtoday REVIEWED: 13 (13M) [PATCH v3 09/20] iommu/fsl: use platform_device_set_of_node()
  2026-07-06 · Bartosz Golaszewski <hidden>
• HOTtoday [PATCH RFC 07/13] iommu: arm-smmu-qcom: Fixed mapping between sid and cb for gpu and lpac
  2026-07-05 · Anna Maniscalco <hidden>
• HOTtoday [PATCH RFC 06/13] DEBUGGING: print contextbank and other ttbrs on fault
  2026-07-05 · Anna Maniscalco <hidden>
• HOTtoday [PATCH RFC 01/13] iommu: arm-smmu-qcom: Configure lpac device with split address space
  2026-07-05 · Anna Maniscalco <hidden>
• HOTtoday [PATCH 4/8] dt-bindings: arm-smmu: Document GPU SMMU for Eliza SoC
  2026-07-05 · Akhil P Oommen <akhilpo@oss.qualcomm.com>
• WARM1d REVIEWED: 1 (0M) [PATCH v4 3/9] dt-bindings: arm-smmu: Document GPU SMMU for Shikra SoC
  2026-07-03 · Akhil P Oommen <akhilpo@oss.qualcomm.com>
• WARM2d [PATCH v3] dt-bindings: arm-smmu: qcom: Add compatible for Maili SoC
  2026-07-03 · Jingyi Wang <hidden>
• HOTtoday [PATCH 03/10] dt-bindings: iommu: apple,dart: Add t8122 compatible
  2026-06-30 · Michael Reeves via B4 Relay <devnull+michael.reeves077.gmail.com@kernel.org>
• COOLING6d REVIEWED: 6 (6M) [PATCH v2 08/19] iommu/fsl: use platform_device_set_of_node()
  2026-06-29 · Bartosz Golaszewski <hidden>
• COOLING4d [PATCH v2] dt-bindings: arm-smmu: qcom: Add compatible for Maili SoC
  2026-06-29 · Jingyi Wang <hidden>
• COOLING8d REVIEWED: 1 (0M) [PATCH v3 3/8] dt-bindings: arm-smmu: Document GPU SMMU for Shikra SoC
  2026-06-28 · Akhil P Oommen <akhilpo@oss.qualcomm.com>
• HOTtoday [PATCH 5/8] iommu/arm-smmu-qcom: Add SM8450 MDSS compatible
  2026-06-23 · Esteban Urrutia via B4 Relay <devnull+esteuwu.proton.me@kernel.org>
• COLD15d [PATCH 1/2] dt-bindings: iommu: Fix interrupt type in example
  2026-06-22 · Ashish Mhetre <hidden>
• COLD21d [PATCH v2 3/3] dt-bindings: arm-smmu: Document GPU SMMU for Shikra SoC
  2026-06-14 · Akhil P Oommen <akhilpo@oss.qualcomm.com>
• COLD20d REVIEWED: 2 (0M) [PATCH v8 02/12] iommu: Add iris-vpu-bus to iommu_buses
  2026-06-10 · Vishnu Reddy <hidden>
• WARM1d Re: [RFC PATCH v3 6/9] iommu/rockchip: Clear AUTO_GATING bit 1 on the RK356x v1 IOMMU
  2026-06-05 · Chaoyi Chen <hidden>
• WARM1d [RFC PATCH v3 6/9] iommu/rockchip: Clear AUTO_GATING bit 1 on the RK356x v1 IOMMU
  2026-06-04 · Midgy BALON <hidden>
• COLD33d [PATCH 5/5] iommu/arm-smmu: Add qcom,shikra-mdss to Qualcomm SMMU client tables
  2026-06-03 · Nabige Aala <hidden>
• COLD29d REVIEWED: 2 (0M) [PATCH v7 02/12] iommu: Add iris-vpu-bus to iommu_buses
  2026-06-03 · Vishnu Reddy <hidden>
• COLD25d REVIEWED: 13 (13M) [PATCH v16 2/3] of: Factor arguments passed to of_map_id() into a struct
  2026-06-03 · Vijayanand Jitta <hidden>
• COLD25d REVIEWED: 28 (28M) [PATCH v16 1/3] of: Add convenience wrappers for of_map_id()
  2026-06-03 · Vijayanand Jitta <hidden>
• COLD34d [PATCH] driver core: platform: Setup device MSI domain just before driver probe
  2026-05-26 · Anup Patel <hidden>
• COOLING11d [PATCH v2 2/6] iommu/arm-smmu: Add interconnect bandwidth voting support
  2026-05-26 · Bibek Kumar Patro <hidden>
• COOLING11d [PATCH v2 1/6] dt-bindings: iommu: arm,smmu: Document interconnects property
  2026-05-26 · Bibek Kumar Patro <hidden>
• COLD38d [PATCH] dt-bindings: arm-smmu: qcom: Add compatible for Maili SoC
  2026-05-25 · Jingyi Wang <hidden>
• COLD43d REVIEWED: 6 (5M) [PATCH v4] dt-bindings: iommu: riscv: Add bindings for Tenstorrent RISC-V IOMMU
  2026-05-21 · Drew Fustini <fustini@kernel.org>

Needs attention (review trailers in, no pickup)

Patches with review trailers that haven't landed in mainline and haven't been Acked by a maintainer. Oldest first.

• STALE128d REVIEWED: 20 (20M) [RESEND,v8 1/3] of: Add convenience wrappers for of_map_id()
  2026-02-26 · Vijayanand Jitta <hidden> · 2 Reviewed-by
• COLD48d REVIEWED: 6 (5M) [PATCH v2] dt-bindings: iommu: riscv: Add bindings for Tenstorrent RISC-V IOMMU
  2026-05-20 · Drew Fustini <fustini@kernel.org> · 1 Reviewed-by, 1 Acked-by
• COLD47d REVIEWED: 6 (5M) [PATCH v3] dt-bindings: iommu: riscv: Add bindings for Tenstorrent RISC-V IOMMU
  2026-05-21 · Drew Fustini <fustini@kernel.org> · 1 Reviewed-by, 1 Acked-by
• COLD43d REVIEWED: 6 (5M) [PATCH v4] dt-bindings: iommu: riscv: Add bindings for Tenstorrent RISC-V IOMMU
  2026-05-21 · Drew Fustini <fustini@kernel.org> · 1 Reviewed-by, 1 Acked-by

Quiet for 30+ days

Patches with no review trailers and no replies. Either the author is heads-down elsewhere or these slipped through. Oldest first.

• STALE182d [PATCH v10 3/7] iommu: Add verisilicon IOMMU driver
  2025-12-15 · Benjamin Gaignard <benjamin.gaignard@collabora.com>
• STALE189d [PATCH v3 3/3] of: Respect #{iommu,msi}-cells in maps
  2025-12-21 · Vijayanand Jitta <hidden>
• STALE165d [RFC PATCH v4 28/38] iommu: ipmmu-vmsa: Add PCIe ch0 to devices_allowlist
  2026-01-18 · Koichiro Den <hidden>
• STALE165d [RFC PATCH v4 29/38] iommu: ipmmu-vmsa: Add support for reserved regions
  2026-01-18 · Koichiro Den <hidden>
• STALE161d [PATCH v6 3/3] of: Respect #{iommu,msi}-cells in maps
  2026-01-21 · Vijayanand Jitta <hidden>
• STALE130d [PATCH v1.1 1/7] iommu/riscv: Enable IOMMU DMA mapping support
  2026-01-29 · Lv Zheng <hidden>
• STALE130d [PATCH v1.1 2/7] iommu/riscv: Fix WSI mode IRQ number handling
  2026-01-29 · Lv Zheng <hidden>
• STALE130d [PATCH v1.1 3/7] iommu/riscv: Add HPM support for performance monitoring
  2026-01-29 · Lv Zheng <hidden>
• STALE130d [PATCH v1.1 5/7] spacemit/t100: Add vendor event support for RISC-V IOMMU HPM
  2026-01-29 · Lv Zheng <hidden>
• STALE130d [PATCH v1.1 6/7] spacemit/t100: Add global filter support for RISC-V IOMMU HPM
  2026-01-29 · Lv Zheng <hidden>