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commit da64a2359092ceec4f9dea5b329d0aef20104217 upstream. When compiling on LoongArch, there exists the following objtool warning in arch/loongarch/kernel/machine_kexec.o: kexec_reboot() falls through to next function crash_shutdown_secondary() Avoid using unreachable() as it can (and will in the absence of UBSAN) generate fall-through code. Use BUG() so we get a "break BRK_BUG" trap (with unreachable annotation). Cc: stable@vger.kernel.org # 6.12+ Acked-by: Josh Poimboeuf <jpoimboe@kernel.org> Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> 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.