arm smmu drivers · Maintained

Maintainers

• M Will Deacon <will@kernel.org>
• R Robin Murphy <robin.murphy@arm.com>

Paths

• F Documentation/devicetree/bindings/iommu/arm,smmu*
• F drivers/iommu/arm/
• F drivers/iommu/io-pgtable-arm*

Last 30 days

Active reviewers (last 30 days)

• Nicolin Chen <hidden>
  9 attestations (5 Reviewed-by, 4 Suggested-by) · last on 2026-07-26
• Jason Gunthorpe <jgg@nvidia.com>
  4 attestations (4 Reviewed-by) · last on 2026-07-26

Recent patches

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

• COOLING14d [PATCH v9 3/4] iommu/arm-smmu-v3-iommufd: Report CFGI/TLBI-repeat erratum
  2026-07-26 · Ashish Mhetre <hidden>
• COOLING14d [PATCH v9 4/4] iommu/arm-smmu-v3: Enable CFGI/TLBI-repeat workaround on Tegra264
  2026-07-26 · Ashish Mhetre <hidden>
• COOLING14d REVIEWED: 7 (6M) [PATCH v9 2/4] iommu/arm-smmu-v3: Add CFGI/TLBI-repeat workaround
  2026-07-26 · Ashish Mhetre <hidden>
• COOLING14d REVIEWED: 6 (6M) [PATCH v9 1/4] iommu/arm-smmu-v3: Factor out CMDQ batch force-sync conditions
  2026-07-26 · Ashish Mhetre <hidden>
• COLD18d [PATCH v8 3/3] iommu/arm-smmu-v3: Enable CFGI/TLBI-repeat workaround on Tegra264
  2026-07-22 · Ashish Mhetre <hidden>
• COLD18d REVIEWED: 7 (6M) [PATCH v8 2/3] iommu/arm-smmu-v3: Introduce CFGI/TLBI-repeat workaround infrastructure
  2026-07-22 · Ashish Mhetre <hidden>
• COLD18d REVIEWED: 6 (6M) [PATCH v8 1/3] iommu/arm-smmu-v3: Factor out CMDQ batch force-sync conditions
  2026-07-22 · Ashish Mhetre <hidden>
• COLD20d REVIEWED: 1 (0M) [PATCH v7 2/3] iommu/arm-smmu-v3: Introduce CFGI/TLBI-repeat workaround infrastructure
  2026-07-14 · Ashish Mhetre <hidden>
• COLD20d REVIEWED: 1 (0M) [PATCH v7 3/3] iommu/arm-smmu-v3: Enable CFGI/TLBI-repeat workaround on Tegra264
  2026-07-14 · Ashish Mhetre <hidden>
• COLD20d [PATCH v7 1/3] iommu/arm-smmu-v3: Factor out CMDQ batch force-sync conditions
  2026-07-14 · Ashish Mhetre <hidden>
• COLD28d [PATCH v6 2/3] iommu/arm-smmu-v3: Introduce CFGI/TLBI-repeat workaround infrastructure
  2026-07-13 · Ashish Mhetre <hidden>
• COLD28d REVIEWED: 1 (0M) [PATCH v6 3/3] iommu/arm-smmu-v3: Enable CFGI/TLBI-repeat workaround on Tegra264
  2026-07-13 · Ashish Mhetre <hidden>
• COLD28d [PATCH v6 1/3] iommu/arm-smmu-v3: Factor out CMDQ batch force-sync conditions
  2026-07-13 · Ashish Mhetre <hidden>
• COLD32d [PATCH v5 3/3] iommu/arm-smmu-v3: Enable CFGI/TLBI-repeat workaround on Tegra264
  2026-07-09 · Ashish Mhetre <hidden>
• STALE390d REVIEWED: 7 (7M) [PATCH v9 28/29] iommu/tegra241-cmdqv: Add user-space use support
  2025-07-10 · Nicolin Chen <hidden>
• STALE390d REVIEWED: 7 (7M) [PATCH v9 27/29] iommu/tegra241-cmdqv: Do not statically map LVCMDQs
  2025-07-10 · Nicolin Chen <hidden>
• STALE390d REVIEWED: 8 (7M) [PATCH v9 29/29] iommu/tegra241-cmdqv: Add IOMMU_VEVENTQ_TYPE_TEGRA241_CMDQV support
  2025-07-10 · Nicolin Chen <hidden>
• STALE390d REVIEWED: 9 (9M) [PATCH v9 26/29] iommu/tegra241-cmdqv: Simplify deinit flow in tegra241_cmdqv_remove_vintf()
  2025-07-10 · Nicolin Chen <hidden>
• STALE390d REVIEWED: 9 (9M) [PATCH v9 23/29] iommu/arm-smmu-v3-iommufd: Add vsmmu_size/type and vsmmu_init impl ops
  2025-07-10 · Nicolin Chen <hidden>
• STALE390d REVIEWED: 9 (9M) [PATCH v9 25/29] iommu/tegra241-cmdqv: Use request_threaded_irq
  2025-07-10 · Nicolin Chen <hidden>
• STALE390d REVIEWED: 7 (7M) [PATCH v9 24/29] iommu/arm-smmu-v3-iommufd: Add hw_info to impl_ops
  2025-07-10 · Nicolin Chen <hidden>
• STALE390d REVIEWED: 10 (10M) [PATCH v9 20/29] iommu: Allow an input type in hw_info op
  2025-07-10 · Nicolin Chen <hidden>
• STALE390d REVIEWED: 11 (11M) [PATCH v9 06/29] iommu: Pass in a driver-level user data structure to viommu_init op
  2025-07-10 · Nicolin Chen <hidden>
• STALE390d REVIEWED: 9 (9M) [PATCH v9 04/29] iommu: Use enum iommu_hw_info_type for type in hw_info op
  2025-07-10 · Nicolin Chen <hidden>
• STALE390d [PATCH v9 00/29] iommufd: Add vIOMMU infrastructure (Part-4 HW QUEUE)
  2025-07-10 · Nicolin Chen <hidden>
• STALE397d REVIEWED: 7 (7M) [PATCH v8 28/29] iommu/tegra241-cmdqv: Add user-space use support
  2025-07-05 · Nicolin Chen <hidden>
• STALE397d REVIEWED: 8 (7M) [PATCH v8 29/29] iommu/tegra241-cmdqv: Add IOMMU_VEVENTQ_TYPE_TEGRA241_CMDQV support
  2025-07-05 · Nicolin Chen <hidden>
• STALE397d REVIEWED: 7 (7M) [PATCH v8 27/29] iommu/tegra241-cmdqv: Do not statically map LVCMDQs
  2025-07-05 · Nicolin Chen <hidden>
• STALE397d REVIEWED: 9 (9M) [PATCH v8 26/29] iommu/tegra241-cmdqv: Simplify deinit flow in tegra241_cmdqv_remove_vintf()
  2025-07-05 · Nicolin Chen <hidden>
• STALE397d REVIEWED: 9 (9M) [PATCH v8 25/29] iommu/tegra241-cmdqv: Use request_threaded_irq
  2025-07-05 · Nicolin Chen <hidden>

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.

• COLD28d REVIEWED: 1 (0M) [PATCH v6 3/3] iommu/arm-smmu-v3: Enable CFGI/TLBI-repeat workaround on Tegra264
  2026-07-13 · Ashish Mhetre <hidden> · 1 Reviewed-by
• COLD18d REVIEWED: 6 (6M) [PATCH v8 1/3] iommu/arm-smmu-v3: Factor out CMDQ batch force-sync conditions
  2026-07-22 · Ashish Mhetre <hidden> · 1 Reviewed-by
• COLD18d REVIEWED: 7 (6M) [PATCH v8 2/3] iommu/arm-smmu-v3: Introduce CFGI/TLBI-repeat workaround infrastructure
  2026-07-22 · Ashish Mhetre <hidden> · 2 Reviewed-by