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authorChristophe Leroy <christophe.leroy@csgroup.eu>2022-02-15 15:41:04 +0300
committerMichael Ellerman <mpe@ellerman.id.au>2022-02-16 15:25:11 +0300
commite1478d8eaf27704db17a44dee4c53696ed01fc9c (patch)
tree7968852fd3c179c5b9311a9d70f18ed57e5b6ad8 /include/asm-generic
parent0dc690e4ef5b901e9d4b53520854fbd5c749e09d (diff)
downloadlinux-e1478d8eaf27704db17a44dee4c53696ed01fc9c.tar.xz
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 'include/asm-generic')
-rw-r--r--include/asm-generic/sections.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/asm-generic/sections.h b/include/asm-generic/sections.h
index bbf97502470c..d0f7bdd2fdf2 100644
--- a/include/asm-generic/sections.h
+++ b/include/asm-generic/sections.h
@@ -60,6 +60,8 @@ extern __visible const void __nosave_begin, __nosave_end;
/* Function descriptor handling (if any). Override in asm/sections.h */
#ifdef CONFIG_HAVE_FUNCTION_DESCRIPTORS
+void *dereference_function_descriptor(void *ptr);
+void *dereference_kernel_function_descriptor(void *ptr);
#else
#define dereference_function_descriptor(p) ((void *)(p))
#define dereference_kernel_function_descriptor(p) ((void *)(p))