linux-kernel - [PATCH 0/3] cfi: Use __builtin_function

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Message-Id: <20220401201916.1487500-1-samitolvanen@google.com>
Date:   Fri,  1 Apr 2022 13:19:13 -0700
From:   Sami Tolvanen <samitolvanen@...gle.com>
To:     Kees Cook <keescook@...omium.org>
Cc:     Catalin Marinas <catalin.marinas@....com>,
        Mark Rutland <mark.rutland@....com>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Will Deacon <will@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        llvm@...ts.linux.dev, Sami Tolvanen <samitolvanen@...gle.com>
Subject: [PATCH 0/3] cfi: Use __builtin_function_start

Clang 14 introduced the __builtin_function_start intrinsic, which
makes it possible to cleanly implement the function_nocfi() macro in a
way that also works with static initializers. Add a default
function_nocfi() implementation and drop the arm64 inline assembly
version.

Sami Tolvanen (3):
  kbuild: Change CFI_CLANG to depend on __builtin_function_start
  linux/compiler-clang.h: define function_nocfi
  arm64: Drop the inline assembly implementation of function_nocfi

 arch/Kconfig                      |  5 +----
 arch/arm64/include/asm/compiler.h | 16 ----------------
 include/linux/compiler-clang.h    | 10 ++++++++++
 init/Kconfig                      |  3 +++
 4 files changed, 14 insertions(+), 20 deletions(-)

-- 
2.35.0