Re: [PATCH v5 1/3] kselftests: lib.mk: Add TEST_GEN_MODS_DIR variable

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On Tue 2024-01-09 21:24:54, Marcos Paulo de Souza wrote:
> Add TEST_GEN_MODS_DIR variable for kselftests. It can point to
> a directory containing kernel modules that will be used by
> selftest scripts.
> 
> The modules are built as external modules for the running kernel.
> As a result they are always binary compatible and the same tests
> can be used for older or newer kernels.
> 
> The build requires "kernel-devel" package to be installed.
> For example, in the upstream sources, the rpm devel package
> is produced by "make rpm-pkg"
> 
> The modules can be built independently by
> 
>   make -C tools/testing/selftests/livepatch/
> 
> or they will be automatically built before running the tests via
> 
>   make -C tools/testing/selftests/livepatch/ run_tests
> 
> Note that they are _not_ built when running the standalone
> tests by calling, for example, ./test-state.sh.
> 
> Along with TEST_GEN_MODS_DIR, it was necessary to create a new install
> rule. INSTALL_MODS_RULE is needed because INSTALL_SINGLE_RULE would
> copy the entire TEST_GEN_MODS_DIR directory to the destination, even
> the files created by Kbuild to compile the modules. The new install
> rule copies only the .ko files, as we would expect the gen_tar to work.
> 
> Reviewed-by: Joe Lawrence <joe.lawrence@xxxxxxxxxx>
> Signed-off-by: Marcos Paulo de Souza <mpdesouza@xxxxxxxx>

I am not export on kbuild. But it looks reasonable and works for me.

Reviewed-by: Petr Mladek <pmladek@xxxxxxxx>

Best Regards,
Petr





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