+ compiler-gcc-document-minimum-version-for-__no_sanitize_coverage__.patch added to mm-unstable branch

+ compiler-gcc-document-minimum-version-for-__no_sanitize_coverage__.patch added to mm-unstable branch

[Andrew Morton]

The patch titled
     Subject: compiler-gcc: document minimum version for `__no_sanitize_coverage__`
has been added to the -mm mm-unstable branch.  Its filename is
     compiler-gcc-document-minimum-version-for-__no_sanitize_coverage__.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/compiler-gcc-document-minimum-version-for-__no_sanitize_coverage__.patch

This patch will later appear in the mm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Miguel Ojeda <ojeda@kernel.org>
Subject: compiler-gcc: document minimum version for `__no_sanitize_coverage__`
Date: Fri, 21 Oct 2022 13:59:56 +0200

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>
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: Nathan Chancellor <nathan@kernel.org>
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(+)

--- a/include/linux/compiler-gcc.h~compiler-gcc-document-minimum-version-for-__no_sanitize_coverage__
+++ a/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
_

Patches currently in -mm which might be from ojeda@kernel.org are

compiler-gcc-be-consistent-with-underscores-use-for-no_sanitize.patch
compiler-gcc-remove-attribute-support-check-for-__no_sanitize_address__.patch
compiler-gcc-remove-attribute-support-check-for-__no_sanitize_thread__.patch
compiler-gcc-remove-attribute-support-check-for-__no_sanitize_undefined__.patch
compiler-gcc-document-minimum-version-for-__no_sanitize_coverage__.patch