Messages in this thread Patch in this message | | | From | Miguel Ojeda <> | Subject | [PATCH v4 05/13] Compiler Attributes: naked was fixed in gcc 4.6 | Date | Sat, 8 Sep 2018 23:24:51 +0200 |
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Commit 9c695203a7dd ("compiler-gcc.h: gcc-4.5 needs noclone and noinline on __naked functions") added noinline and noclone as a workaround for a gcc 4.5 bug, which was resolved in 4.6.0.
Since now the minimum gcc supported version is 4.6, we can clean it up.
See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=44290 and https://godbolt.org/z/h6NMIL
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Luc Van Oostenryck <luc.vanoostenryck@gmail.com> Cc: Eli Friedman <efriedma@codeaurora.org> Cc: Christopher Li <sparse@chrisli.org> Cc: Kees Cook <keescook@chromium.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Joe Perches <joe@perches.com> Cc: Dominique Martinet <asmadeus@codewreck.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: linux-sparse@vger.kernel.org Signed-off-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com> --- include/linux/compiler-gcc.h | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-)
diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h index 76f4907ef707..4cd5e9264bce 100644 --- a/include/linux/compiler-gcc.h +++ b/include/linux/compiler-gcc.h @@ -77,14 +77,8 @@ * to trace naked functions because then mcount is called without * stack and frame pointer being set up and there is no chance to * restore the lr register to the value before mcount was called. - * - * The asm() bodies of naked functions often depend on standard calling - * conventions, therefore they must be noinline and noclone. - * - * GCC 4.[56] currently fail to enforce this, so we must do so ourselves. - * See GCC PR44290. */ -#define __naked __attribute__((__naked__)) noinline __noclone notrace +#define __naked __attribute__((__naked__)) notrace #define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__) -- 2.17.1
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