On microblaze systems which are not using OPT_LIB_FUNCTION only simple memset is used. This function is already implemented in lib/string.c that's why it should be used instead. This change is done in respect of issue fixed by commit 33d0f96ffd73 ("lib/string.c: Use freestanding environment") where gcc-10.x moved -ftree-loop-distribute-patterns optimization is to O2 optimization level. This optimization causes GCC to convert the while loop in memset.c into a call to memset. So This optimization is transforming a loop in a memset/memcpy into a call to the function itself. This makes the memset implementation as recursive. Based on fix above -ffreestanding was used and it needs to be used on Microblaze too but the patch is not adding this flag it removes simple implementation to cause that generic implementation is used where this flag is already setup. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Signed-off-by: Mahesh Bodapati <mbodapat@xilinx.com> Link: https://lore.kernel.org/r/4a143e7654f72ee893dcea9769946e17d3570b16.1645797329.git.michal.simek@xilinx.com
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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