diff options
| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2022-02-15 13:41:04 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2022-02-16 23:25:11 +1100 |
| commit | e1478d8eaf27704db17a44dee4c53696ed01fc9c (patch) | |
| tree | 7968852fd3c179c5b9311a9d70f18ed57e5b6ad8 /arch/powerpc/include/asm/sections.h | |
| parent | 0dc690e4ef5b901e9d4b53520854fbd5c749e09d (diff) | |
asm-generic: Refactor dereference_[kernel]_function_descriptor()
dereference_function_descriptor() and
dereference_kernel_function_descriptor() are identical on the
three architectures implementing them.
Make them common and put them out-of-line in kernel/extable.c
which is one of the users and has similar type of functions.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Helge Deller <deller@gmx.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/449db09b2eba57f4ab05f80102a67d8675bc8bcd.1644928018.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/include/asm/sections.h')
| -rw-r--r-- | arch/powerpc/include/asm/sections.h | 23 |
1 files changed, 0 insertions, 23 deletions
diff --git a/arch/powerpc/include/asm/sections.h b/arch/powerpc/include/asm/sections.h index fddfb3937868..8be2c491c733 100644 --- a/arch/powerpc/include/asm/sections.h +++ b/arch/powerpc/include/asm/sections.h @@ -58,29 +58,6 @@ static inline int overlaps_kernel_text(unsigned long start, unsigned long end) (unsigned long)_stext < end; } -#ifdef PPC64_ELF_ABI_v1 - -#undef dereference_function_descriptor -static inline void *dereference_function_descriptor(void *ptr) -{ - struct func_desc *desc = ptr; - void *p; - - if (!get_kernel_nofault(p, (void *)&desc->addr)) - ptr = p; - return ptr; -} - -#undef dereference_kernel_function_descriptor -static inline void *dereference_kernel_function_descriptor(void *ptr) -{ - if (ptr < (void *)__start_opd || ptr >= (void *)__end_opd) - return ptr; - - return dereference_function_descriptor(ptr); -} -#endif /* PPC64_ELF_ABI_v1 */ - #endif #endif /* __KERNEL__ */ |