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329105ce53
With CONFIG_BUG=n, the 64-bit Book3S build fails with: arch/powerpc/include/asm/book3s/64/pgtable-64k.h: In function 'get_hugepd_cache_index': arch/powerpc/include/asm/book3s/64/pgtable-64k.h:51:1: error: no return statement in function returning non-void Currently the body of the function is just BUG(), so when CONFIG_BUG=n it is an empty function, leading to the error. get_hugepd_cache_index() should never be called, the only call is behind an is_hugepd() check, which is always false for this configuration. Instead mark it as always inline, and change the BUG() to BUILD_BUG(). That should allow the compiler to see that the function is never called, and therefore that it never returns, fixing the build error. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20240306125853.3714578-1-mpe@ellerman.id.au |
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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.