From f39556bc2530c83a22bc11b73c7a46df9a340685 Mon Sep 17 00:00:00 2001 From: Miguel Ojeda <ojeda@kernel.org> Date: Fri, 21 Oct 2022 13:59:56 +0200 Subject: [PATCH] compiler-gcc: document minimum version for `__no_sanitize_coverage__` The attribute was added in GCC 12.1. This will simplify future cleanups, and is closer to what we do in `compiler_attributes.h`. Link: https://godbolt.org/z/MGbT76j6G Link: https://lkml.kernel.org/r/20221021115956.9947-5-ojeda@kernel.org Signed-off-by: Miguel Ojeda <ojeda@kernel.org> Acked-by: Marco Elver <elver@google.com> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Konovalov <andreyknvl@gmail.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Dan Li <ashimida@linux.alibaba.com> Cc: Kees Cook <keescook@chromium.org> Cc: Kumar Kartikeya Dwivedi <memxor@gmail.com> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Uros Bizjak <ubizjak@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- include/linux/compiler-gcc.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h index 7f2c2bb73815..7af9e34ec261 100644 --- a/include/linux/compiler-gcc.h +++ b/include/linux/compiler-gcc.h @@ -92,6 +92,9 @@ #define __no_sanitize_undefined __attribute__((__no_sanitize_undefined__)) +/* + * Only supported since gcc >= 12 + */ #if defined(CONFIG_KCOV) && __has_attribute(__no_sanitize_coverage__) #define __no_sanitize_coverage __attribute__((__no_sanitize_coverage__)) #else -- 2.30.9