live update · Maintained

Maintainers

• M Pasha Tatashin <pasha.tatashin@soleen.com>
• M Mike Rapoport <rppt@kernel.org>
• M Pratyush Yadav <pratyush@kernel.org>

Paths

• F Documentation/core-api/liveupdate.rst
• F Documentation/mm/memfd_preservation.rst
• F Documentation/userspace-api/liveupdate.rst
• F include/linux/kho/abi/
• F include/linux/liveupdate.h
• F include/uapi/linux/liveupdate.h
• F kernel/liveupdate/
• F lib/tests/liveupdate.c
• F mm/memfd_luo.c
• F tools/testing/selftests/liveupdate/

Last 30 days

Most active threads (last 7 days)

• [PATCH v6 00/12] PCI: liveupdate: PCI core support for Live Update
  2026-05-22 20:24 · 4 replies in 7d · David Matlack <dmatlack@google.com>

Active reviewers (last 30 days)

• David Matlack <dmatlack@google.com>
  2 attestations (2 Co-developed-by) · last on 2026-05-11
• Luca Boccassi <hidden>
  1 attestation (1 Suggested-by) · last on 2026-05-19
• Pratyush Yadav (Google) <pratyush@kernel.org>
  1 attestation (1 Reviewed-by) · last on 2026-05-14

Recent patches

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

• [PATCH v6 12/12] Documentation: PCI: Add documentation for Live Update
  2026-05-22 · David Matlack <dmatlack@google.com>
• [PATCH v6 06/12] PCI: liveupdate: Auto-preserve upstream bridges across Live Update
  2026-05-22 · David Matlack <dmatlack@google.com>
• [PATCH v6 02/12] PCI: liveupdate: Track outgoing preserved PCI devices
  2026-05-22 · David Matlack <dmatlack@google.com>
• [PATCH v6 01/12] PCI: liveupdate: Set up FLB handler for the PCI core
  2026-05-22 · David Matlack <dmatlack@google.com>
• [PATCH] liveupdate: document liveupdate=on
  2026-05-19 · Pratyush Yadav <pratyush@kernel.org>
• [PATCH v2 10/10] selftests/liveupdate: Add stress-files kexec test
  2026-05-14 · Pasha Tatashin <pasha.tatashin@soleen.com>
• [PATCH v2 09/10] selftests/liveupdate: Add stress-sessions kexec test
  2026-05-14 · Pasha Tatashin <pasha.tatashin@soleen.com>
• [PATCH v2 08/10] selftests/liveupdate: Test session and file limit removal
  2026-05-14 · Pasha Tatashin <pasha.tatashin@soleen.com>
• [PATCH v2 07/10] liveupdate: Remove limit on the number of files per session
  2026-05-14 · Pasha Tatashin <pasha.tatashin@soleen.com>
• [PATCH v2 06/10] liveupdate: Remove limit on the number of sessions
  2026-05-14 · Pasha Tatashin <pasha.tatashin@soleen.com>
• [PATCH v2 05/10] liveupdate: defer session block allocation and PA setting
  2026-05-14 · Pasha Tatashin <pasha.tatashin@soleen.com>
• [PATCH v2 04/10] liveupdate: add support for linked-block serialization
  2026-05-14 · Pasha Tatashin <pasha.tatashin@soleen.com>
• [PATCH v2 03/10] liveupdate: Extract luo_session_deserialize_one helper
  2026-05-14 · Pasha Tatashin <pasha.tatashin@soleen.com>
• [PATCH v2 02/10] liveupdate: Extract luo_file_deserialize_one helper
  2026-05-14 · Pasha Tatashin <pasha.tatashin@soleen.com>
• [PATCH v2 01/10] liveupdate: centralize state management into struct luo_ser
  2026-05-14 · Pasha Tatashin <pasha.tatashin@soleen.com>
• [PATCH v5 11/11] Documentation: PCI: Add documentation for Live Update
  2026-05-12 · David Matlack <dmatlack@google.com>
• [PATCH v5 02/11] PCI: liveupdate: Track outgoing preserved PCI devices
  2026-05-12 · David Matlack <dmatlack@google.com>
• [PATCH v5 01/11] PCI: liveupdate: Set up FLB handler for the PCI core
  2026-05-12 · David Matlack <dmatlack@google.com>
• [PATCH v4 07/16] docs: liveupdate: Add documentation for VFIO PCI
  2026-05-11 · Vipin Sharma <hidden>
• [PATCH v4 02/16] vfio/pci: Preserve vfio-pci device files across Live Update
  2026-05-11 · Vipin Sharma <hidden>
• [PATCH v4 01/16] vfio/pci: Register a file handler with Live Update Orchestrator
  2026-05-11 · Vipin Sharma <hidden>
• [PATCH v4 11/11] Documentation: PCI: Add documentation for Live Update
  2026-04-23 · David Matlack <dmatlack@google.com>
• [PATCH v4 02/11] PCI: liveupdate: Track outgoing preserved PCI devices
  2026-04-23 · David Matlack <dmatlack@google.com>
• [PATCH v4 01/11] PCI: liveupdate: Set up FLB handler for the PCI core
  2026-04-23 · David Matlack <dmatlack@google.com>
• Re: [PATCH v3 02/24] PCI: Add API to track PCI devices preserved across Live Update
  2026-04-05 · Zhu Yanjun <hidden>
• [PATCH v3 15/24] selftests/liveupdate: Add helpers to preserve/retrieve FDs
  2026-03-23 · David Matlack <dmatlack@google.com>
• [PATCH v3 14/24] selftests/liveupdate: Move luo_test_utils.* into a reusable library
  2026-03-23 · David Matlack <dmatlack@google.com>
• [PATCH v3 13/24] docs: liveupdate: Add documentation for VFIO PCI
  2026-03-23 · David Matlack <dmatlack@google.com>
• [PATCH v3 12/24] vfio/pci: Skip reset of preserved device after Live Update
  2026-03-23 · David Matlack <dmatlack@google.com>
• [PATCH v3 07/24] vfio/pci: Preserve vfio-pci device files across Live Update
  2026-03-23 · David Matlack <dmatlack@google.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.

• [PATCH v8 18/18] selftests/liveupdate: Add kexec test for multiple and empty sessions
  2025-11-25 · Pasha Tatashin <pasha.tatashin@soleen.com> · 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.

• [PATCH v5 04/22] liveupdate: Kconfig: Make debugfs optional
  2025-11-07 · Pasha Tatashin <pasha.tatashin@soleen.com>
• [PATCH v5 08/22] liveupdate: luo_file: implement file systems callbacks
  2025-11-07 · Pasha Tatashin <pasha.tatashin@soleen.com>
• [PATCH v5 09/22] liveupdate: luo_session: Add ioctls for file preservation and state management
  2025-11-07 · Pasha Tatashin <pasha.tatashin@soleen.com>
• [PATCH v5 10/22] liveupdate: luo_flb: Introduce File-Lifecycle-Bound global state
  2025-11-07 · Pasha Tatashin <pasha.tatashin@soleen.com>
• [PATCH v5 11/22] docs: add luo documentation
  2025-11-07 · Pasha Tatashin <pasha.tatashin@soleen.com>
• [PATCH v5 19/22] selftests/liveupdate: Add userspace API selftests
  2025-11-07 · Pasha Tatashin <pasha.tatashin@soleen.com>
• [PATCH v5 20/22] selftests/liveupdate: Add kexec-based selftest for session lifecycle
  2025-11-07 · Pasha Tatashin <pasha.tatashin@soleen.com>
• [PATCH v5 21/22] selftests/liveupdate: Add kexec test for multiple and empty sessions
  2025-11-07 · Pasha Tatashin <pasha.tatashin@soleen.com>
• [PATCH v6 09/20] docs: add luo documentation
  2025-11-15 · Pasha Tatashin <pasha.tatashin@soleen.com>
• [PATCH v6 19/20] selftests/liveupdate: Add kexec test for multiple and empty sessions
  2025-11-15 · Pasha Tatashin <pasha.tatashin@soleen.com>