With CONFIG_GENDWARFKSYMS, um builds fail due to missing prototypes in asm/asm-prototypes.h. Add declarations for cmpxchg8b_emu and the exported checksum functions, including csum_partial_copy_generic as it's also exported.
Cc: Masahiro Yamada <masahi...@kernel.org> Cc: linux-kbu...@vger.kernel.org Reported-by: kernel test robot <l...@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202503251216.le4t9ikj-...@intel.com/ Signed-off-by: Sami Tolvanen <samitolva...@google.com> --- arch/um/include/asm/asm-prototypes.h | 5 +++++ arch/x86/um/asm/checksum.h | 3 +++ 2 files changed, 8 insertions(+) diff --git a/arch/um/include/asm/asm-prototypes.h b/arch/um/include/asm/asm-prototypes.h index 5898a26daa0d..408b31d59127 100644 --- a/arch/um/include/asm/asm-prototypes.h +++ b/arch/um/include/asm/asm-prototypes.h @@ -1 +1,6 @@ #include <asm-generic/asm-prototypes.h> +#include <asm/checksum.h> + +#ifdef CONFIG_UML_X86 +extern void cmpxchg8b_emu(void); +#endif diff --git a/arch/x86/um/asm/checksum.h b/arch/x86/um/asm/checksum.h index b07824500363..ddc144657efa 100644 --- a/arch/x86/um/asm/checksum.h +++ b/arch/x86/um/asm/checksum.h @@ -20,6 +20,9 @@ */ extern __wsum csum_partial(const void *buff, int len, __wsum sum); +/* Do not call this directly. Declared for export type visibility. */ +extern __visible __wsum csum_partial_copy_generic(const void *src, void *dst, int len); + /** * csum_fold - Fold and invert a 32bit checksum. * sum: 32bit unfolded sum base-commit: f6e0150b2003fb2b9265028a618aa1732b3edc8f -- 2.49.0.395.g12beb8f557-goog
