The kernel test robot reports a link error when the stm driver is a loadable module on any v5.4 kernel: > ERROR: "__memcat_p" [drivers/hwtracing/stm/stm_core.ko] undefined! This was fixed in mainline with commit 7273ad2b08f8 ("kbuild: link lib-y objects to vmlinux forcibly when CONFIG_MODULES=y"), which is fairly intrusive. Fix the v5.4 specific issue with a minimal subset of that patch, linking only the failing object into the kernel. Kernels before v4.20 are not affected. Reported-by: kernel test robot <lkp@intel.com> Link: https://groups.google.com/g/clang-built-linux/c/H-PrABqYShg Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel ============ There are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. Please read Documentation/admin-guide/README.rst first. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. The formatted documentation can also be read online at: https://www.kernel.org/doc/html/latest/ There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.
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