linux-kernel - [PATCH v3 0/6] Rust: support `CPU_MITIGATIONS` and enable `objtool`

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Message-ID: <20240725183325.122827-1-ojeda@kernel.org>
Date: Thu, 25 Jul 2024 20:33:17 +0200
From: Miguel Ojeda <ojeda@...nel.org>
To: Josh Poimboeuf <jpoimboe@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	Masahiro Yamada <masahiroy@...nel.org>
Cc: x86@...nel.org,
	"H. Peter Anvin" <hpa@...or.com>,
	Nathan Chancellor <nathan@...nel.org>,
	Nicolas Schier <nicolas@...sle.eu>,
	Miguel Ojeda <ojeda@...nel.org>,
	Wedson Almeida Filho <wedsonaf@...il.com>,
	Alex Gaynor <alex.gaynor@...il.com>,
	Boqun Feng <boqun.feng@...il.com>,
	Gary Guo <gary@...yguo.net>,
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,
	Benno Lossin <benno.lossin@...ton.me>,
	Andreas Hindborg <a.hindborg@...sung.com>,
	Alice Ryhl <aliceryhl@...gle.com>,
	rust-for-linux@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	patches@...ts.linux.dev,
	linux-kbuild@...r.kernel.org
Subject: [PATCH v3 0/6] Rust: support `CPU_MITIGATIONS` and enable `objtool`

Hi,

This is just v2 with the helper function suggested by Peter.

I dropped Benno's and Alice's Tested-bys from the modified patch, just
in case, but the logic should be equivalent.

Cheers,
Miguel

v3:
  - Added `is_rust_noreturn()` helper function (Peter).
  - Reworded a couple bits.

v2: https://lore.kernel.org/rust-for-linux/20240724161501.1319115-1-ojeda@kernel.org/
v1: https://lore.kernel.org/rust-for-linux/20231023174449.251550-1-ojeda@kernel.org/

Miguel Ojeda (6):
  rust: module: add static pointer to `{init,cleanup}_module()`
  x86/rust: support MITIGATION_RETPOLINE
  x86/rust: support MITIGATION_RETHUNK
  x86/rust: support MITIGATION_SLS
  objtool/rust: list `noreturn` Rust functions
  objtool/kbuild/rust: enable objtool for Rust

 arch/x86/Makefile               |  7 ++++-
 rust/Makefile                   | 22 +++++++++------
 rust/macros/module.rs           | 12 +++++++++
 scripts/Makefile.build          |  9 +++++--
 scripts/generate_rust_target.rs | 15 +++++++++++
 tools/objtool/check.c           | 48 ++++++++++++++++++++++++++++++++-
 tools/objtool/noreturns.h       |  2 ++
 7 files changed, 103 insertions(+), 12 deletions(-)


base-commit: b1263411112305acf2af728728591465becb45b0
--
2.45.2