linux-stable.git/tools/testing/selftests/liveupdate/vmtest.sh, branch master Linux kernel stable tree selftests/liveupdate: Move luo_test_utils.* into a reusable library 2026-07-26T08:28:41+00:00 Vipin Sharma vipinsh@google.com 2026-07-20T20:32:02+00:00 df1a0d068d481b7d175c5af3970043206409a062 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> 
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>
selftests/liveupdate: add end to end test infrastructure and scripts 2026-07-10T08:07:54+00:00 Pasha Tatashin pasha.tatashin@soleen.com 2026-06-26T09:15:36+00:00 89dd1421c554515e0f562ec67d976e6309f2710b 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> 
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>