[GIT PULL] liveupdate: updates for 7.3-rc1

Hi Linus,

The following changes since commit 797fe91e50d6927f90f0c3b4444277c2c7c8b42b:

  kho: align kho_scratch to MAX_ORDER_NR_PAGES pages (2026-07-25 15:26:30 +0300)

are available in the Git repository at:

  https://git.kernel.org/pub/scm/linux/kernel/git/liveupdate/linux.git tags/liveupdate-v7.3-rc1

for you to fetch changes up to bcf2a0b55e322a663c9602c9e773770b87d3e629:

  Merge branch 'selftests-lib' into next (2026-08-04 10:52:22 +0300)

----------------------------------------------------------------
liveupdate: updates for v7.3-rc1

KHO:
* Fix size calculation in kho_preserved_memory_reserve() for preservations
  larger than 2 GiB

LUO:
  * move liveupdate selftest utilities into a library so that selftests of
    subsystems participating in liveupdate, e.g. PCI and VFIO, can use them and
    drop direct ioctl calls from the tests
  * add end to end liveupdate test infrastructure that allows running the
    tests across a kexec in QEMU
  * remove redundant INIT_LIST_HEAD in luo_session_alloc()
  * remember the error status of an FLB retrieve() and return it on subsequent
    attempts rather than retrying retrieve() with an FLB in an unexpected
    state
  * reference count the outgoing FLB so that it cannot be freed while a caller
    is using it, the same way it's done for the incoming FLB
  * reject nonzero reserved field in LIVEUPDATE_SESSION_FINISH so that it can
    be reused by a future extension

----------------------------------------------------------------
David Matlack (2):
      liveupdate: Reference count outgoing FLB data
      liveupdate: Remember FLB retrieve() status

Hongfu Li (1):
      liveupdate: Remove redundant INIT_LIST_HEAD in luo_session_alloc

Jackie Liu (1):
      liveupdate: reject nonzero reserved value for SESSION_FINISH

Mike Rapoport (Microsoft) (4):
      Merge patch series "Make liveupdate selftests library"
      Merge branch 'fixes' into next
      Merge branch 'misc' into next
      Merge branch 'selftests-lib' into next

Pasha Tatashin (1):
      selftests/liveupdate: add end to end test infrastructure and scripts

Pratyush Yadav (Google) (1):
      kho: fix size calculation in kho_preserved_memory_reserve()

Vipin Sharma (2):
      selftests/liveupdate: Use luo_test_utils.c for liveupdate ioctl APIs
      selftests/liveupdate: Move luo_test_utils.* into a reusable library

 include/linux/liveupdate.h                         |  11 +-
 kernel/liveupdate/kexec_handover.c                 |   2 +-
 kernel/liveupdate/luo_flb.c                        |  20 +-
 kernel/liveupdate/luo_session.c                    |   7 +-
 tools/testing/selftests/liveupdate/.gitignore      |   2 +
 tools/testing/selftests/liveupdate/Makefile        |  14 +-
 tools/testing/selftests/liveupdate/config          |   1 +
 tools/testing/selftests/liveupdate/config.aarch64  |   2 +
 tools/testing/selftests/liveupdate/config.x86_64   |   2 +
 tools/testing/selftests/liveupdate/init.c          | 179 ++++++++++++++
 .../include/libliveupdate.h}                       |  11 +-
 .../selftests/liveupdate/lib/libliveupdate.mk      |  20 ++
 .../{luo_test_utils.c => lib/lu_utils.c}           |  78 ++++--
 tools/testing/selftests/liveupdate/liveupdate.c    | 106 +++------
 .../selftests/liveupdate/luo_kexec_simple.c        |   2 +-
 .../selftests/liveupdate/luo_multi_session.c       |   2 +-
 .../selftests/liveupdate/luo_stress_files.c        |   3 +-
 .../selftests/liveupdate/luo_stress_sessions.c     |   3 +-
 tools/testing/selftests/liveupdate/run-vmtests.sh  |  97 ++++++++
 tools/testing/selftests/liveupdate/vmtest.sh       | 263 +++++++++++++++++++++
 20 files changed, 700 insertions(+), 125 deletions(-)
 create mode 100644 tools/testing/selftests/liveupdate/config.aarch64
 create mode 100644 tools/testing/selftests/liveupdate/config.x86_64
 create mode 100644 tools/testing/selftests/liveupdate/init.c
 rename tools/testing/selftests/liveupdate/{luo_test_utils.h => lib/include/libliveupdate.h} (77%)
 create mode 100644 tools/testing/selftests/liveupdate/lib/libliveupdate.mk
 rename tools/testing/selftests/liveupdate/{luo_test_utils.c => lib/lu_utils.c} (80%)
 create mode 100755 tools/testing/selftests/liveupdate/run-vmtests.sh
 create mode 100755 tools/testing/selftests/liveupdate/vmtest.sh