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 v3 0/3] x86/irq: Fix lost interrupts on CPU hot-unplug
  2026-09-07 06:52 · 1 reply in 7d · Naman Jain <hidden>
• HOTtoday [PATCH v5 0/5] Hyper-V: Add para-virtualized IOMMU support for Linux guests
  2026-09-04 07:55 · 3 replies in 7d · Yu Zhang <hidden>

Active reviewers (last 30 days)

• Jacob Pan <hidden>
  4 attestations (4 Reviewed-by) · last on 2026-09-04
• Wei Liu <wei.liu@kernel.org>
  3 attestations (3 Co-developed-by) · last on 2026-09-04
• Easwar Hariharan <hidden>
  3 attestations (3 Co-developed-by) · last on 2026-09-04
• Thomas Gleixner <tglx@kernel.org>
  2 attestations (2 Suggested-by) · last on 2026-09-07
• Shradha Gupta <hidden>
  2 attestations (2 Reviewed-by) · last on 2026-09-07
• Michael Kelley <hidden>
  2 attestations (2 Reviewed-by) · last on 2026-09-04

Recent patches

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

• HOTtoday REVIEWED: 1 (0M) [PATCH v3 3/3] x86/irq, iommu/amd, x86/hyperv, PCI: Drop redundant irq_retrigger inits
  2026-09-07 · Naman Jain <hidden>
• HOTtoday REVIEWED: 1 (0M) [PATCH v5 5/5] iommu/hyperv: Add page-selective IOTLB flush support
  2026-09-04 · Yu Zhang <hidden>
• HOTtoday REVIEWED: 2 (0M) [PATCH v5 4/5] iommu/hyperv: Add para-virtualized IOMMU support for Hyper-V guest
  2026-09-04 · Yu Zhang <hidden>
• HOTtoday REVIEWED: 1 (0M) [PATCH v5 3/5] iommu/x86: Add architectural MSI reserved region helper
  2026-09-04 · Yu Zhang <hidden>
• COOLING4d REVIEWED: 1 (0M) [PATCH v4 5/5] iommu/hyperv: Add page-selective IOTLB flush support
  2026-08-21 · Yu Zhang <hidden>
• COOLING4d REVIEWED: 1 (0M) [PATCH v4 4/5] iommu/hyperv: Add para-virtualized IOMMU support for Hyper-V guest
  2026-08-21 · Yu Zhang <hidden>
• COOLING4d [PATCH v4 3/5] iommu/x86: Add architectural MSI reserved region helper
  2026-08-21 · Yu Zhang <hidden>
• COLD19d [PATCH v3 5/5] iommu/hyperv: Add page-selective IOTLB flush support
  2026-08-11 · Yu Zhang <hidden>
• COLD19d [PATCH v3 4/5] iommu/hyperv: Add para-virtualized IOMMU support for Hyper-V guest
  2026-08-11 · Yu Zhang <hidden>
• COLD19d [PATCH v3 3/5] iommu/x86: Share the architectural MSI reserved range
  2026-08-11 · Yu Zhang <hidden>
• COOLING14d REVIEWED: 1 (0M) [PATCH v2 3/3] x86/irq, iommu/amd, PCI: Drop redundant irq_retrigger inits
  2026-08-10 · Naman Jain <hidden>
• WARM3d [PATCH v5 7/9] x86/hyperv: Implement Hyper-V virtual IOMMU
  2026-07-31 · Mukesh R <hidden>
• COOLING5d [PATCH 3/3] x86/irq, iommu/amd, PCI: Drop redundant irq_retrigger inits
  2026-07-28 · Naman Jain <hidden>
• COLD41d [PATCH V4 7/9] x86/hyperv: Implement Hyper-V virtual IOMMU
  2026-07-18 · Mukesh R <hidden>
• COLD54d [PATCH v2 4/4] iommu/hyperv: Add page-selective IOTLB flush support
  2026-07-02 · Yu Zhang <hidden>
• COLD54d [PATCH v2 3/4] iommu/hyperv: Add para-virtualized IOMMU support for Hyper-V guest
  2026-07-02 · Yu Zhang <hidden>
• STALE116d [PATCH V1 2/3] hyperv: Implement irq remap for passthru devices
  2026-05-12 · Mukesh R <hidden>
• STALE108d [PATCH V3 09/11] x86/hyperv: Implement Hyper-V virtual IOMMU
  2026-05-12 · Mukesh R <hidden>
• STALE108d REVIEWED: 1 (0M) [PATCH V3 01/11] iommu/hyperv: Rename hyperv-iommu.c to hyperv-irq.c
  2026-05-12 · Mukesh R <hidden>
• STALE108d [PATCH v1 4/4] iommu/hyperv: Add page-selective IOTLB flush support
  2026-05-11 · Yu Zhang <hidden>
• STALE108d [PATCH v1 3/4] iommu/hyperv: Add para-virtualized IOMMU support for Hyper-V guest
  2026-05-11 · Yu Zhang <hidden>
• STALE108d [PATCH v1 1/4] iommu: Move Hyper-V IOMMU driver to its own subdirectory
  2026-05-11 · Yu Zhang <hidden>
• STALE122d Re: [PATCH V2 08/11] PCI: hv: Build device id for a VMBus device, export PCI devid function
  2026-05-01 · Easwar Hariharan <hidden>
• STALE122d [PATCH V2 09/11] x86/hyperv: Implement hyperv virtual IOMMU
  2026-05-01 · Mukesh R <hidden>
• STALE122d REVIEWED: 1 (0M) [PATCH V2 01/11] iommu/hyperv: rename hyperv-iommu.c to hyperv-irq.c
  2026-05-01 · Mukesh R <hidden>
• STALE130d [PATCH v0 2/3] hyperv: Implement irq remap for passthru devices
  2026-04-29 · Mukesh R <hidden>
• STALE131d [PATCH V1 11/13] x86/hyperv: Implement hyperv virtual iommu
  2026-04-22 · Mukesh R <hidden>
• STALE131d [PATCH V1 01/13] iommu/hyperv: rename hyperv-iommu.c to hyperv-irq.c
  2026-04-22 · Mukesh R <hidden>
• STALE144d [PATCH 50/61] iommu: Prefer IS_ERR_OR_NULL over manual NULL check
  2026-03-10 · Philipp Hahn <hidden>
• STALE142d [PATCH v0 12/15] x86/hyperv: Implement hyperv virtual iommu
  2026-01-20 · Mukesh R <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.

• COOLING14d REVIEWED: 1 (0M) [PATCH v2 3/3] x86/irq, iommu/amd, PCI: Drop redundant irq_retrigger inits
  2026-08-10 · Naman Jain <hidden> · 1 Reviewed-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.

• STALE130d [PATCH v0 2/3] hyperv: Implement irq remap for passthru devices
  2026-04-29 · Mukesh R <hidden>
• STALE122d Re: [PATCH V2 08/11] PCI: hv: Build device id for a VMBus device, export PCI devid function
  2026-05-01 · Easwar Hariharan <hidden>