As reported by sparse: arch/powerpc/mm/ptdump/hashpagetable.c:264:29: warning: restricted __be64 degrades to integer arch/powerpc/mm/ptdump/hashpagetable.c:265:49: warning: restricted __be64 degrades to integer arch/powerpc/mm/ptdump/hashpagetable.c:267:36: warning: incorrect type in assignment (different base types) arch/powerpc/mm/ptdump/hashpagetable.c:267:36: expected unsigned long long [usertype] arch/powerpc/mm/ptdump/hashpagetable.c:267:36: got restricted __be64 [usertype] v arch/powerpc/mm/ptdump/hashpagetable.c:268:36: warning: incorrect type in assignment (different base types) arch/powerpc/mm/ptdump/hashpagetable.c:268:36: expected unsigned long long [usertype] arch/powerpc/mm/ptdump/hashpagetable.c:268:36: got restricted __be64 [usertype] r The values returned by plpar_pte_read_4() are CPU endian, not __be64, so assigning them to struct hash_pte confuses sparse. As a minimal fix open code a struct to hold the values with CPU endian types. Reported-by: kernel test robot <lkp@intel.com> Reported-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220202053039.691917-1-mpe@ellerman.id.au
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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