+ compiler-gcc-improve-version-error.patch added to -mm tree

+ compiler-gcc-improve-version-error.patch added to -mm tree

[akpm]

The patch titled
     Subject: compiler-gcc: improve version error
has been added to the -mm tree.  Its filename is
     compiler-gcc-improve-version-error.patch

This patch should soon appear at
    https://ozlabs.org/~akpm/mmots/broken-out/compiler-gcc-improve-version-error.patch
and later at
    https://ozlabs.org/~akpm/mmotm/broken-out/compiler-gcc-improve-version-error.patch

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*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***

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there every 3-4 working days

------------------------------------------------------
From: Nick Desaulniers <ndesaulniers@google.com>
Subject: compiler-gcc: improve version error

As Kees suggests, doing so provides developers with two useful pieces of
information:
- The kernel build was attempting to use GCC.
  (Maybe they accidentally poked the wrong configs in a CI.)
- They need 4.9 or better.
  ("Upgrade to what version?" doesn't need to be dug out of documentation,
   headers, etc.)

Link: https://lkml.kernel.org/r/20200902225911.209899-8-ndesaulniers@google.com
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Sedat Dilek <sedat.dilek@gmail.com>
Suggested-by: Kees Cook <keescook@chromium.org>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Cc: Fangrui Song <maskray@google.com>
Cc: Marco Elver <elver@google.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 include/linux/compiler-gcc.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/include/linux/compiler-gcc.h~compiler-gcc-improve-version-error
+++ a/include/linux/compiler-gcc.h
@@ -12,7 +12,7 @@
 
 /* https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58145 */
 #if GCC_VERSION < 40900
-# error Sorry, your compiler is too old - please upgrade it.
+# error Sorry, your version of GCC is too old - please use 4.9 or newer.
 #endif
 
 /* Optimization barrier */
_

Patches currently in -mm which might be from ndesaulniers@google.com are

maintainers-add-llvm-maintainers.patch
lib-stringc-implement-stpcpy.patch
compiler-clang-add-build-check-for-clang-1001.patch
revert-kbuild-disable-clangs-default-use-of-fmerge-all-constants.patch
revert-arm64-bti-require-clang-=-1001-for-in-kernel-bti-support.patch
revert-arm64-vdso-fix-compilation-with-clang-older-than-8.patch
partially-revert-arm-8905-1-emit-__gnu_mcount_nc-when-using-clang-1000-or-newer.patch
compiler-gcc-improve-version-error.patch