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)

• HOTtoday [PATCH v5 00/20] vfio/pci: Base Live Update support for VFIO
  2026-07-14 15:15 · 4 replies in 7d · Vipin Sharma <hidden>
• DORMANTno replies [PATCH 1/2] liveupdate: fix GET_NAME ioctl argument validation
  2026-07-15 06:06 · 1 reply in 7d · Jackie Liu <hidden>
• HOTtoday [PATCH] kho: align kho_scratch to MAX_ORDER_NR_PAGES pages
  2026-07-14 20:51 · 0 replies in 7d · Michal Clapinski <hidden>
• WARM1d [RFC PATCH v2 0/2] kho: support preserving unsplit high-order pages
  2026-07-13 20:49 · 2 replies in 7d · Pranjal Shrivastava <praan@google.com>
• DORMANTno replies [RFC PATCH] liveupdate: Allow multiple openers for /dev/liveupdate
  2026-07-14 19:04 · 0 replies in 7d · David Matlack <dmatlack@google.com>
• HOTtoday [PATCH] liveupdate: Remove redundant INIT_LIST_HEAD in luo_session_alloc
  2026-07-14 07:43 · 0 replies in 7d · Hongfu Li <hidden>
• COOLING5d [PATCH v3 00/21] kho: make boot time huge page allocation work nicely with KHO
  2026-07-09 17:39 · 18 replies in 7d · Pratyush Yadav <pratyush@kernel.org>
• COOLING4d [PATCH v7 00/12] PCI: liveupdate: PCI core support for Live Update
  2026-07-10 21:26 · 3 replies in 7d · David Matlack <dmatlack@google.com>
• WARM3d IN LINUX-NEXT [PATCH v2 0/3] mm: split a couple of headers from internal.h
  2026-07-09 10:00 · 2 replies in 7d · "Mike Rapoport (Microsoft)" <rppt@kernel.org>
• WARM1d [PATCH 0/3] mm: split a couple of headers from internal.h
  2026-07-09 06:42 · 2 replies in 7d · "Mike Rapoport (Microsoft)" <rppt@kernel.org>

Active reviewers (last 30 days)

• Pasha Tatashin <pasha.tatashin@soleen.com>
  6 attestations (6 Reviewed-by) · last on 2026-07-09
• Pranjal Shrivastava <praan@google.com>
  3 attestations (3 Reviewed-by) · last on 2026-07-14
• Mike Rapoport (Microsoft) <rppt@kernel.org>
  3 attestations (2 Acked-by, 1 Co-developed-by) · last on 2026-06-28
• David Matlack <dmatlack@google.com>
  2 attestations (2 Co-developed-by) · last on 2026-07-14
• Muchun Song <muchun.song@linux.dev>
  2 attestations (2 Acked-by) · last on 2026-07-09
• Pratyush Yadav (Google) <pratyush@kernel.org>
  2 attestations (2 Reviewed-by) · last on 2026-06-28
• Samiullah Khawaja <hidden>
  1 attestation (1 Reviewed-by) · last on 2026-07-14
• Jordan Richards <hidden>
  1 attestation (1 Co-developed-by) · last on 2026-06-26

Recent patches

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

• DORMANTno replies [PATCH 1/2] liveupdate: fix GET_NAME ioctl argument validation
  2026-07-15 · Jackie Liu <hidden>
• DORMANTno replies [PATCH 2/2] liveupdate: reject nonzero reserved value for SESSION_FINISH
  2026-07-15 · Jackie Liu <hidden>
• HOTtoday [PATCH] kho: align kho_scratch to MAX_ORDER_NR_PAGES pages
  2026-07-14 · Michal Clapinski <hidden>
• DORMANTno replies [RFC PATCH] liveupdate: Allow multiple openers for /dev/liveupdate
  2026-07-14 · David Matlack <dmatlack@google.com>
• HOTtoday [PATCH v5 12/20] docs: liveupdate: Add documentation for VFIO PCI
  2026-07-14 · Vipin Sharma <hidden>
• HOTtoday [PATCH v5 06/20] vfio/pci: Preserve vfio-pci device files across Live Update
  2026-07-14 · Vipin Sharma <hidden>
• HOTtoday [PATCH v5 05/20] vfio/pci: Register a file handler with Live Update Orchestrator
  2026-07-14 · Vipin Sharma <hidden>
• HOTtoday REVIEWED: 2 (1M) [PATCH v5 04/20] liveupdate: Export symbols needed by modules
  2026-07-14 · Vipin Sharma <hidden>
• HOTtoday [PATCH] liveupdate: Remove redundant INIT_LIST_HEAD in luo_session_alloc
  2026-07-14 · Hongfu Li <hidden>
• WARM1d [RFC PATCH v2 2/2] kho: Introduce preserve/restore APIs for unsplit pages
  2026-07-13 · Pranjal Shrivastava <praan@google.com>
• WARM1d [RFC PATCH v2 1/2] kho: Introduce a helper to init unsplit pages
  2026-07-13 · Pranjal Shrivastava <praan@google.com>
• COOLING4d REVIEWED: 1 (1M) [PATCH v7 12/12] Documentation: PCI: Add documentation for Live Update
  2026-07-10 · David Matlack <dmatlack@google.com>
• COOLING4d [PATCH v7 06/12] PCI: liveupdate: Auto-preserve upstream bridges across Live Update
  2026-07-10 · David Matlack <dmatlack@google.com>
• COOLING4d REVIEWED: 1 (1M) [PATCH v7 01/12] PCI: liveupdate: Set up FLB handler for the PCI core
  2026-07-10 · David Matlack <dmatlack@google.com>
• DORMANTno replies [PATCH v3 21/21] kho: exclude hugetlb memory from scratch size calculation
  2026-07-09 · Pratyush Yadav <pratyush@kernel.org>
• COOLING5d [PATCH v3 18/21] kho: extend scratch
  2026-07-09 · Pratyush Yadav <pratyush@kernel.org>
• COOLING5d [PATCH v3 17/21] mm/mm_init: don't rely on memblock to get KHO scratch migratetype
  2026-07-09 · Pratyush Yadav <pratyush@kernel.org>
• COOLING5d [PATCH v3 15/21] kho: initialize preserved memory map radix tree earlier
  2026-07-09 · Pratyush Yadav <pratyush@kernel.org>
• COOLING5d [PATCH v3 14/21] kho: initialize kho_scratch pointer earlier in boot
  2026-07-09 · Pratyush Yadav <pratyush@kernel.org>
• COOLING5d [PATCH v3 13/21] kho: expose kho_scratch_overlap() to kexec_handover.h
  2026-07-09 · Pratyush Yadav <pratyush@kernel.org>
• COOLING5d [PATCH v3 12/21] kho: add kho_radix_init_tree()
  2026-07-09 · Pratyush Yadav <pratyush@kernel.org>
• COOLING5d REVIEWED: 5 (5M) [PATCH v3 11/21] kho: allow destroying KHO radix tree
  2026-07-09 · Pratyush Yadav <pratyush@kernel.org>
• COOLING5d REVIEWED: 5 (5M) [PATCH v3 10/21] kho: allow early-boot usage of the KHO radix tree
  2026-07-09 · Pratyush Yadav <pratyush@kernel.org>
• COOLING5d REVIEWED: 5 (5M) [PATCH v3 09/21] kho: add data argument to radix walk callback
  2026-07-09 · Pratyush Yadav <pratyush@kernel.org>
• COOLING5d [PATCH v3 08/21] kho: add callback for table pages
  2026-07-09 · Pratyush Yadav <pratyush@kernel.org>
• COOLING5d [PATCH v3 07/21] kho: add a struct for radix callbacks
  2026-07-09 · Pratyush Yadav <pratyush@kernel.org>
• COOLING5d [PATCH v3 06/21] kho: move all memory retrieval logic to kho_mem_retrieve()
  2026-07-09 · Pratyush Yadav <pratyush@kernel.org>
• COOLING5d [PATCH v3 05/21] kho: store incoming radix tree in kho_in
  2026-07-09 · Pratyush Yadav <pratyush@kernel.org>
• COOLING5d [PATCH v3 04/21] kho: return virtual address of mem_map
  2026-07-09 · Pratyush Yadav <pratyush@kernel.org>
• COOLING5d [PATCH v3 03/21] kho: disallow wide keys in radix tree
  2026-07-09 · Pratyush Yadav <pratyush@kernel.org>

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.

• STALE182d REVIEWED: 18 (18M) [PATCH v2] kho: init alloc tags when restoring pages from reserved memory
  2026-01-13 · <hidden> · 2 Reviewed-by
• STALE168d REVIEWED: 11 (11M) [PATCH v6 1/4] kho: add size parameter to kho_add_subtree()
  2026-01-27 · Breno Leitao <leitao@debian.org> · 1 Reviewed-by
• STALE152d REVIEWED: 5 (5M) [PATCH v3] kho: add support for deferred struct page init
  2026-02-11 · Michal Clapinski <hidden> · 1 Reviewed-by
• DORMANTno replies REVIEWED: 10 (10M) [PATCH v3 2/2] kho: remove unnecessary WARN_ON(err) in kho_populate()
  2026-02-12 · <hidden> · 2 Reviewed-by
• STALE140d REVIEWED: 21 (21M) [PATCH v4 2/2] kho: make preserved pages compatible with deferred struct page init
  2026-02-20 · Michal Clapinski <hidden> · 3 Reviewed-by
• DORMANTno replies REVIEWED: 21 (21M) [PATCH v5 2/2] kho: make preserved pages compatible with deferred struct page init
  2026-02-25 · Michal Clapinski <hidden> · 3 Reviewed-by
• STALE127d REVIEWED: 11 (11M) [PATCH v7 1/6] kho: add size parameter to kho_add_subtree()
  2026-03-06 · Breno Leitao <leitao@debian.org> · 1 Reviewed-by
• STALE96d REVIEWED: 11 (11M) [PATCH v8 1/6] kho: add size parameter to kho_add_subtree()
  2026-03-09 · Breno Leitao <leitao@debian.org> · 1 Reviewed-by
• STALE96d REVIEWED: 11 (11M) [PATCH v8 2/6] kho: rename fdt parameter to blob in kho_add/remove_subtree()
  2026-03-09 · Breno Leitao <leitao@debian.org> · 1 Reviewed-by
• STALE124d REVIEWED: 21 (21M) [PATCH v6 2/2] kho: make preserved pages compatible with deferred struct page init
  2026-03-11 · Michal Clapinski <hidden> · 3 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.

• STALE186d [PATCH v3 1/2] kho: history: track previous kernel version
  2026-01-08 · Breno Leitao <leitao@debian.org>
• STALE177d Re: [PATCH v4] kho: validate preserved memory map during population
  2026-01-08 · Breno Leitao <leitao@debian.org>
• STALE183d [PATCH v5 1/2] kho: Adopt radix tree for preserved memory tracking
  2026-01-13 · Jason Miu <hidden>
• DORMANTno replies [PATCH v5 2/2] kho: Remove finalize state and clients
  2026-01-13 · Jason Miu <hidden>
• STALE180d [PATCH v6 1/2] kho: Adopt radix tree for preserved memory tracking
  2026-01-15 · Jason Miu <hidden>
• DORMANTno replies [PATCH v6 2/2] kho: Remove finalize state and clients
  2026-01-15 · Jason Miu <hidden>
• DORMANTno replies [PATCH] kho: skip memoryless NUMA nodes when reserving scratch areas
  2026-01-16 · Evangelos Petrongonas <hidden>
• DORMANTno replies Re: [PATCH v3 1/2] kho: history: track previous kernel version
  2026-01-16 · Breno Leitao <leitao@debian.org>
• STALE176d Re: [PATCH v4] kho: validate preserved memory map during population
  2026-01-18 · Mike Rapoport <rppt@kernel.org>
• DORMANTno replies Re: [PATCH 5/6] kho: Relocate vmalloc preservation structure to KHO ABI header
  2026-01-20 · Mike Rapoport <rppt@kernel.org>