vfio driver · Maintained

Maintainers

• M Alex Williamson <alex@shazbot.org>

Paths

• F Documentation/ABI/testing/debugfs-vfio
• F Documentation/ABI/testing/sysfs-devices-vfio-dev
• F Documentation/driver-api/vfio.rst
• F drivers/vfio/
• F include/linux/vfio.h
• F include/linux/vfio_pci_core.h
• F include/uapi/linux/vfio.h
• F tools/testing/selftests/vfio/

Last 30 days

Most active threads (last 7 days)

• HOTtoday [RFC PATCH 0/6] KVM: guest_memfd: back guest_memfd with an imported dma-buf
  2026-10-05 09:55 · 1 reply in 7d · Fred Griffoul <hidden>

Active reviewers (last 30 days)

• David Matlack <dmatlack@google.com>
  4 attestations (3 Acked-by, 1 Reviewed-by) · last on 2026-09-21
• Jason Gunthorpe <jgg@nvidia.com>
  1 attestation (1 Suggested-by) · last on 2026-09-18
• Sean Christopherson <seanjc@google.com>
  1 attestation (1 Co-developed-by) · last on 2026-09-18
• Jason J. Herne <jjherne@linux.ibm.com>
  1 attestation (1 Reviewed-by) · last on 2026-09-18

Recent patches

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

• HOTtoday [RFC PATCH 2/6] dma-buf: Add get_phys() to describe a physical run
  2026-10-05 · Fred Griffoul <hidden>
• COOLING10d [RFC PATCH 2/3] vfio: selftests: Add iommufd hwpt replace test
  2026-09-25 · Samiullah Khawaja <hidden>
• COOLING10d [RFC PATCH 1/3] vfio: selftests: Add support of creating iommus from iommufd
  2026-09-25 · Samiullah Khawaja <hidden>
• COOLING7d IN LINUX-NEXT: 1 (1M) [PATCH v7 07/10] vfio: selftests: Add dev_dbg
  2026-09-21 · Jason Gunthorpe <jgg@nvidia.com>
• COOLING7d IN LINUX-NEXT [PATCH v7 06/10] vfio: selftests: Allow drivers to specify required region size
  2026-09-21 · Jason Gunthorpe <jgg@nvidia.com>
• COOLING7d IN LINUX-NEXT: 1 (1M) [PATCH v7 08/10] vfio: selftests: Add mlx5 driver - HW init and command interface
  2026-09-21 · Jason Gunthorpe <jgg@nvidia.com>
• COOLING7d IN LINUX-NEXT: 1 (1M) [PATCH v7 09/10] vfio: selftests: Add mlx5 driver - data path and memcpy ops
  2026-09-21 · Jason Gunthorpe <jgg@nvidia.com>
• COOLING7d IN LINUX-NEXT: 1 (1M) [PATCH v7 10/10] vfio: selftests: mlx5 driver - add send_msi support
  2026-09-21 · Jason Gunthorpe <jgg@nvidia.com>
• COOLING6d REVIEWED: 1 (1M) [PATCH v8 04/29] KVM/vfio: Use file-based reference counting for KVM
  2026-09-18 · Steffen Eiden <seiden@linux.ibm.com>
• COLD20d [PATCH RFC POC 31/50] vfio: install the migration data descriptor when the ioctl returns
  2026-09-15 · Christian Brauner <brauner@kernel.org>
• COLD19d REVIEWED: 1 (1M) [PATCH v7 01/23] vfio: Use file-based reference counting for KVM
  2026-08-31 · Steffen Eiden <seiden@linux.ibm.com>
• COLD39d [PATCH v6 01/33] vfio: Use file-based reference counting for KVM
  2026-08-12 · Steffen Eiden <seiden@linux.ibm.com>
• STALE64d [PATCH v5 01/31] vfio: Use file-based reference counting for KVM
  2026-07-31 · Steffen Eiden <seiden@linux.ibm.com>
• STALE75d REVIEWED: 3 (3M) [PATCH v4 01/27] VFIO: take reference to the KVM module
  2026-07-06 · Steffen Eiden <seiden@linux.ibm.com>
• STALE75d REVIEWED: 3 (3M) [PATCH v4 03/27] KVM, vfio: remove symbol_get(kvm_put_kvm) from vfio
  2026-07-06 · Steffen Eiden <seiden@linux.ibm.com>
• STALE75d REVIEWED: 3 (3M) [PATCH v4 02/27] KVM, vfio: remove symbol_get(kvm_get_kvm_safe) from vfio
  2026-07-06 · Steffen Eiden <seiden@linux.ibm.com>
• STALE124d REVIEWED: 2 (0M) [PATCH v3 23/32] vfio: use iova_to_phys_length for efficient unmap
  2026-06-03 · Guanghui Feng <hidden>
• STALE124d REVIEWED: 2 (0M) [PATCH v2 23/30] vfio/iommufd: use iova_to_phys_length for efficient unmap
  2026-06-02 · Guanghui Feng <hidden>
• STALE124d REVIEWED: 2 (0M) [PATCH 7/9] vfio/iommufd: use iova_to_phys_length for efficient unmap
  2026-05-31 · Guanghui Feng <hidden>
• STALE129d REVIEWED: 3 (3M) [PATCH v3 01/27] VFIO: take reference to the KVM module
  2026-05-29 · Steffen Eiden <seiden@linux.ibm.com>
• STALE129d REVIEWED: 3 (3M) [PATCH v3 03/27] KVM, vfio: remove symbol_get(kvm_put_kvm) from vfio
  2026-05-29 · Steffen Eiden <seiden@linux.ibm.com>
• STALE129d REVIEWED: 3 (3M) [PATCH v3 02/27] KVM, vfio: remove symbol_get(kvm_get_kvm_safe) from vfio
  2026-05-29 · Steffen Eiden <seiden@linux.ibm.com>
• STALE153d REVIEWED: 3 (3M) [RFC PATCH v2 02/28] KVM, vfio: remove symbol_get(kvm_get_kvm_safe) from vfio
  2026-04-28 · Steffen Eiden <seiden@linux.ibm.com>
• STALE153d REVIEWED: 3 (3M) [RFC PATCH v2 03/28] KVM, vfio: remove symbol_get(kvm_put_kvm) from vfio
  2026-04-28 · Steffen Eiden <seiden@linux.ibm.com>
• STALE153d REVIEWED: 3 (3M) [RFC PATCH v2 01/28] VFIO: take reference to the KVM module
  2026-04-28 · Steffen Eiden <seiden@linux.ibm.com>
• STALE160d REVIEWED: 3 (3M) [PATCH v2 01/28] VFIO: take reference to the KVM module
  2026-04-28 · Steffen Eiden <seiden@linux.ibm.com>
• STALE160d REVIEWED: 3 (3M) [PATCH v2 02/28] KVM, vfio: remove symbol_get(kvm_get_kvm_safe) from vfio
  2026-04-28 · Steffen Eiden <seiden@linux.ibm.com>
• STALE160d REVIEWED: 3 (3M) [PATCH v2 03/28] KVM, vfio: remove symbol_get(kvm_put_kvm) from vfio
  2026-04-28 · Steffen Eiden <seiden@linux.ibm.com>
• STALE160d [RFC PATCH v1 5/9] uaccess: Switch to copy_{to/from}_user_partial() when relevant
  2026-04-27 · "Christophe Leroy (CS GROUP)" <chleroy@kernel.org>
• STALE166d [PATCH v1 01/27] VFIO: take reference to the KVM module
  2026-04-02 · Steffen Eiden <seiden@linux.ibm.com>

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.

• STALE124d REVIEWED: 2 (0M) [PATCH v2 23/30] vfio/iommufd: use iova_to_phys_length for efficient unmap
  2026-06-02 · Guanghui Feng <hidden> · 2 Acked-by
• STALE124d REVIEWED: 2 (0M) [PATCH v3 23/32] vfio: use iova_to_phys_length for efficient unmap
  2026-06-03 · Guanghui Feng <hidden> · 2 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.

• STALE166d [PATCH v1 03/27] KVM, vfio: remove symbol_get(kvm_put_kvm) from vfio
  2026-04-02 · Steffen Eiden <seiden@linux.ibm.com>
• STALE166d [PATCH v1 02/27] KVM, vfio: remove symbol_get(kvm_get_kvm_safe) from vfio
  2026-04-02 · Steffen Eiden <seiden@linux.ibm.com>