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

Active reviewers (last 30 days)

• Robin Murphy <robin.murphy@arm.com>
  2 attestations (2 Suggested-by) · last on 2026-06-04

Recent patches

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

• COLD27d [PATCH 2/2] iommu/virtio: Avoid using the list iterator past the loop in viommu_add_resv_mem()
  2026-06-04 · Maoyi Xie <hidden>
• COLD27d [PATCH 1/2] iommu: Avoid using the list iterator past the loop in iommu_insert_resv_region()
  2026-06-04 · Maoyi Xie <hidden>
• STALE90d REVIEWED: 5 (5M) [PATCH v2] iommu: Always fill in gather when unmapping
  2026-04-02 · Jason Gunthorpe <jgg@nvidia.com>
• STALE84d Re: [PATCH] iommu: Always fill in gather when unmapping
  2026-04-01 · Robin Murphy <robin.murphy@arm.com>
• STALE84d [PATCH] iommu: Always fill in gather when unmapping
  2026-03-31 · Jason Gunthorpe <jgg@nvidia.com>
• STALE103d LANDED [PATCH v3 6/8] iommu/dma: add support for DMA_ATTR_REQUIRE_COHERENT attribute
  2026-03-16 · Leon Romanovsky <leon@kernel.org>
• STALE111d [PATCH v2 6/8] iommu/dma: add support for DMA_ATTR_REQUIRE_COHERENT attribute
  2026-03-11 · Leon Romanovsky <leon@kernel.org>
• STALE127d LANDED: 11 (11M) [PATCH v7 8/8] iommufd: Add dma_buf_pin()
  2026-01-31 · Leon Romanovsky <leon@kernel.org>
• STALE127d REVIEWED: 3 (3M) [PATCH v7 2/8] dma-buf: Rename dma_buf_move_notify() to dma_buf_invalidate_mappings()
  2026-01-31 · Leon Romanovsky <leon@kernel.org>
• STALE127d REVIEWED: 3 (3M) [PATCH v7 1/8] dma-buf: Rename .move_notify() callback to a clearer identifier
  2026-01-31 · Leon Romanovsky <leon@kernel.org>
• STALE152d REVIEWED: 11 (11M) [PATCH v6 8/8] iommufd: Add dma_buf_pin()
  2026-01-30 · Leon Romanovsky <leon@kernel.org>
• STALE152d REVIEWED: 3 (3M) [PATCH v6 1/8] dma-buf: Rename .move_notify() callback to a clearer identifier
  2026-01-30 · Leon Romanovsky <leon@kernel.org>
• STALE152d REVIEWED: 3 (3M) [PATCH v6 2/8] dma-buf: Rename dma_buf_move_notify() to dma_buf_invalidate_mappings()
  2026-01-30 · Leon Romanovsky <leon@kernel.org>
• STALE149d REVIEWED: 3 (3M) [PATCH v5 8/8] iommufd: Add dma_buf_pin()
  2026-01-24 · Leon Romanovsky <leon@kernel.org>
• STALE149d LANDED: 3 (3M) [PATCH v5 1/8] dma-buf: Rename .move_notify() callback to a clearer identifier
  2026-01-24 · Leon Romanovsky <leon@kernel.org>
• STALE149d LANDED [PATCH v5 2/8] dma-buf: Rename dma_buf_move_notify() to dma_buf_invalidate_mappings()
  2026-01-24 · Leon Romanovsky <leon@kernel.org>
• STALE161d REVIEWED: 3 (3M) [PATCH v4 6/8] iommufd: Pin dma-buf importer for revoke semantics
  2026-01-21 · Leon Romanovsky <leon@kernel.org>
• STALE161d [PATCH v4 2/8] dma-buf: Rename dma_buf_move_notify() to dma_buf_invalidate_mappings()
  2026-01-21 · Leon Romanovsky <leon@kernel.org>
• STALE161d REVIEWED: 3 (3M) [PATCH v4 1/8] dma-buf: Rename .move_notify() callback to a clearer identifier
  2026-01-21 · Leon Romanovsky <leon@kernel.org>
• STALE159d [PATCH v3 5/7] iommufd: Pin dma-buf importer for revoke semantics
  2026-01-20 · Leon Romanovsky <leon@kernel.org>
• STALE159d REVIEWED: 3 (3M) [PATCH v3 1/7] dma-buf: Rename .move_notify() callback to a clearer identifier
  2026-01-20 · Leon Romanovsky <leon@kernel.org>
• STALE162d [PATCH v2 3/4] iommufd: Require DMABUF revoke semantics
  2026-01-18 · Leon Romanovsky <leon@kernel.org>
• STALE162d [PATCH v2 1/4] dma-buf: Rename .move_notify() callback to a clearer identifier
  2026-01-18 · Leon Romanovsky <leon@kernel.org>
• STALE195d REVIEWED: 8 (8M) [PATCH v2 6/6] iommu: Pass in old domain to attach_dev callback functions
  2025-10-23 · Nicolin Chen <hidden>
• STALE195d REVIEWED: 6 (6M) [PATCH v2 5/6] iommu: Do not revert set_domain for the last gdev
  2025-10-23 · Nicolin Chen <hidden>
• STALE195d REVIEWED: 6 (6M) [PATCH v2 4/6] iommu/amd: Set release_domain to blocked_domain
  2025-10-23 · Nicolin Chen <hidden>
• STALE195d REVIEWED: 14 (14M) [PATCH v2 3/6] iommu/exynos-iommu: Set release_domain to exynos_identity_domain
  2025-10-23 · Nicolin Chen <hidden>
• STALE195d REVIEWED: 6 (6M) [PATCH v2 2/6] iommu/arm-smmu-v3: Set release_domain to arm_smmu_blocked_domain
  2025-10-23 · Nicolin Chen <hidden>
• STALE195d [PATCH v2 1/6] iommu: Generic support for RMRs during device release
  2025-10-23 · Nicolin Chen <hidden>
• STALE236d [PATCH v1 19/20] iommu/virtio-iommu: Implement viommu_domain_test_dev
  2025-10-13 · Nicolin Chen <hidden>

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.

• STALE161d [PATCH v4 2/8] dma-buf: Rename dma_buf_move_notify() to dma_buf_invalidate_mappings()
  2026-01-21 · Leon Romanovsky <leon@kernel.org>
• STALE111d [PATCH v2 6/8] iommu/dma: add support for DMA_ATTR_REQUIRE_COHERENT attribute
  2026-03-11 · Leon Romanovsky <leon@kernel.org>
• STALE103d LANDED [PATCH v3 6/8] iommu/dma: add support for DMA_ATTR_REQUIRE_COHERENT attribute
  2026-03-16 · Leon Romanovsky <leon@kernel.org>