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

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


WARNING: multiple messages have this Message-ID (diff)
From: Sami Tolvanen <samitolvanen@google.com>
To: Kees Cook <keescook@chromium.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>,
	Mark Rutland <mark.rutland@arm.com>,
	 Masahiro Yamada <masahiroy@kernel.org>,
	Nathan Chancellor <nathan@kernel.org>,
	 Nick Desaulniers <ndesaulniers@google.com>,
	Will Deacon <will@kernel.org>,
	 linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org,  llvm@lists.linux.dev,
	Sami Tolvanen <samitolvanen@google.com>
Subject: [PATCH 0/3] cfi: Use __builtin_function_start
Date: Fri,  1 Apr 2022 13:19:13 -0700	[thread overview]
Message-ID: <20220401201916.1487500-1-samitolvanen@google.com> (raw)

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


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             reply	other threads:[~2022-04-01 20:19 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-01 20:19 Sami Tolvanen [this message]
2022-04-01 20:19 ` [PATCH 0/3] cfi: Use __builtin_function_start Sami Tolvanen
2022-04-01 20:19 ` [PATCH 1/3] kbuild: Change CFI_CLANG to depend on __builtin_function_start Sami Tolvanen
2022-04-01 20:19   ` Sami Tolvanen
2022-04-02 13:31   ` Masahiro Yamada
2022-04-02 13:31     ` Masahiro Yamada
2022-04-04 19:40     ` Sami Tolvanen
2022-04-04 19:40       ` Sami Tolvanen
2022-04-04 22:52       ` Nathan Chancellor
2022-04-04 22:52         ` Nathan Chancellor
2022-04-05  2:53         ` Kees Cook
2022-04-05  2:53           ` Kees Cook
2022-04-01 20:19 ` [PATCH 2/3] linux/compiler-clang.h: define function_nocfi Sami Tolvanen
2022-04-01 20:19   ` Sami Tolvanen
2022-04-05 16:16   ` Mark Rutland
2022-04-05 16:16     ` Mark Rutland
2022-04-01 20:19 ` [PATCH 3/3] arm64: Drop the inline assembly implementation of function_nocfi Sami Tolvanen
2022-04-01 20:19   ` Sami Tolvanen
2022-04-04  9:03   ` Will Deacon
2022-04-04  9:03     ` Will Deacon
2022-04-05 16:23   ` Mark Rutland
2022-04-05 16:23     ` Mark Rutland
2022-04-01 20:49 ` [PATCH 0/3] cfi: Use __builtin_function_start Nick Desaulniers
2022-04-01 20:49   ` Nick Desaulniers

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