Move luo_test_utils.[ch] into a lib/ directory and make libliveupdate
library. Pull the rules to build them out into a separate
libliveupdate.mk script. This will enable these utilities to be
also built by and used within other selftests (such as VFIO).
Update path in vmtest.sh as that one uses hardcoded path for util.
No functional change intended.
Co-developed-by: David Matlack <dmatlack@google.com>
Signed-off-by: David Matlack <dmatlack@google.com>
Acked-by: Pratyush Yadav (Google) <pratyush@kernel.org>
Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Signed-off-by: Vipin Sharma <vipinsh@google.com>
Link: https://patch.msgid.link/20260720203202.1964557-3-vipinsh@google.com
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Add the end to end testing infrastructure required to verify the
liveupdate feature. This includes a custom init process, a test
orchestration script, and a batch runner.
The framework consists of:
init.c:
A lightweight init process that manages the kexec lifecycle.
It mounts necessary filesystems, determines the current execution
stage (1 or 2) via the kernel command line, and handles the
kexec_file_load() sequence to transition between kernels.
vmtest.sh:
The primary KTAP-compliant test driver. It handles:
- Kernel configuration merging and building.
- Cross-compilation detection for x86_64 and arm64.
- Generation of the initrd containing the test binary and init.
- QEMU execution with automatic accelerator detection (KVM, HVF,
or TCG).
run-vmtests.sh:
A wrapper that runs vmtest.sh for each LUO test across supported
architectures, providing a summary of pass/fail/skip results.
Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Co-developed-by: Jordan Richards <jordanrichards@google.com>
Signed-off-by: Jordan Richards <jordanrichards@google.com>
Co-developed-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Acked-by: Pratyush Yadav <pratyush@kernel.org>
Link: https://patch.msgid.link/20260626-luo-vmtest-v0-v4-1-e7d3111cd5b3@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
