[PATCH v3 0/2] Make liveupdate selftests library

[Vipin Sharma <vipinsh@google.com>]

Hello,

This is v3 series of refactoring liveupdate selftests as a library. It
exposes common liveupdate ioctls as a library which can be used by other
selftests like VFIO and IOMMU.

Currently, there are no users of this change but it is being used in
VFIO and iommu liveupdate series.

  https://lore.kernel.org/kvm/20260323235817.1960573-15-dmatlack@google.com/
  https://lore.kernel.org/linux-iommu/20260427175633.1978233-17-skhawaja@google.com/

I think it is better to move the patches out from the above series and
propose them as a separate series for inclusion in liveupdate repo. That
way we can decouple multiple downstream dependencies and then it can be
used by VFIO, IOMMU, and KVM (guest_memfd preservation) separately.

v3:
 - Renamed liveupdate.c in the library to lu_utils.c
 - Reordered patches, first abstract out ioctls to utils file then
   create libary.
 - Using stricter check for ioctls.
 - Reordered header include, also, keeping c lib headers as a separate
   block.

v2: https://lore.kernel.org/kexec/20260610230909.876546-1-vipinsh@google.com/
 - Addressed Sashiko feedback regarding folder creation.
   https://sashiko.dev/#/patchset/20260511201155.1488670-1-vipinsh%40google.com
 - Update liveupdate.c test to use ioctl wrappers in library

v1: https://lore.kernel.org/all/20260511201155.1488670-1-vipinsh@google.com/

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

 tools/testing/selftests/liveupdate/.gitignore |   1 +
 tools/testing/selftests/liveupdate/Makefile   |  14 +--
 .../include/libliveupdate.h}                  |  11 +-
 .../selftests/liveupdate/lib/libliveupdate.mk |  20 ++++
 .../{luo_test_utils.c => lib/lu_utils.c}      |  63 +++++++++--
 .../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 +-
 .../liveupdate/luo_stress_sessions.c          |   3 +-
 10 files changed, 120 insertions(+), 105 deletions(-)
 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} (83%)


base-commit: 3a358c78093f98a70d84c934b7054f636bc846f2
-- 
2.54.0.1136.gdb2ca164c4-goog