Commit fb8722735f50 ("arm64: support __int128 on gcc 5+") added support for the __int128 data type, but this breaks the build in some configurations where GCC ends up emitting calls to the __lshrti3 helper in libgcc, which results in a link error: kernel/sched/fair.o: In function `__calc_delta': fair.c:(.text+0xca0): undefined reference to `__lshrti3' kernel/time/timekeeping.o: In function `timekeeping_resume': timekeeping.c:(.text+0x3f60): undefined reference to `__lshrti3' make: *** [vmlinux] Error 1 Fix the build by providing an implementation of __lshrti3, like we do already for __ashlti3 and __ashrti3. Reported-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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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