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authorMiguel Ojeda <ojeda@kernel.org>2022-10-21 13:59:56 +0200
committerAndrew Morton <akpm@linux-foundation.org>2022-11-08 17:37:20 -0800
commitf39556bc2530c83a22bc11b73c7a46df9a340685 (patch)
treee99154194476f5a67daa05a69a6e754345b1dc20
parent689540cbda7f69594ae5e13fef4c8239519d8b66 (diff)
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>
-rw-r--r--include/linux/compiler-gcc.h3
1 files changed, 3 insertions, 0 deletions
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