From: Alice Ryhl <aliceryhl@google.com>
To: Miguel Ojeda <ojeda@kernel.org>
Cc: "Josh Poimboeuf" <jpoimboe@kernel.org>,
"Peter Zijlstra" <peterz@infradead.org>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Ingo Molnar" <mingo@redhat.com>,
"Borislav Petkov" <bp@alien8.de>,
"Dave Hansen" <dave.hansen@linux.intel.com>,
"Masahiro Yamada" <masahiroy@kernel.org>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
"Nathan Chancellor" <nathan@kernel.org>,
"Nicolas Schier" <nicolas@fjasle.eu>,
"Wedson Almeida Filho" <wedsonaf@gmail.com>,
"Alex Gaynor" <alex.gaynor@gmail.com>,
"Boqun Feng" <boqun.feng@gmail.com>,
"Gary Guo" <gary@garyguo.net>,
"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
"Benno Lossin" <benno.lossin@proton.me>,
"Andreas Hindborg" <a.hindborg@samsung.com>,
rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org,
patches@lists.linux.dev, linux-kbuild@vger.kernel.org
Subject: Re: [PATCH v2 0/6] Rust: support `CPU_MITIGATIONS` and enable `objtool`
Date: Thu, 25 Jul 2024 11:43:28 +0200 [thread overview]
Message-ID: <CAH5fLgiCLxe3bjHtf3frY3vOsYucu4cFDtDR1UUZYXCGwxLv8w@mail.gmail.com> (raw)
In-Reply-To: <20240724161501.1319115-1-ojeda@kernel.org>
On Wed, Jul 24, 2024 at 6:15 PM Miguel Ojeda <ojeda@kernel.org> wrote:
>
> Hi,
>
> This is an updated series to the CPU mitigations support for Rust. It
> also has the patch to enable `objtool`, so that we can start running it
> for Rust.
>
> It would be nice to get this applied soon, so that we start being
> warning-free (since we already get warnings under IBT builds via
> `vmlinux.o`). I am happy to take it through the Rust tree if the x86 and
> objtool maintainers give an Acked-by, or through any of the other trees,
> as you prefer. Otherwise, I think at this point we would need to make
> Rust exclusive to the mitigations, which isn't great.
>
> With this series, again, x86_64 is warning-free with `objtool` enabled. I
> tested `-O2`/`-Os` and the Rust versions we support under `-O2` (mainly
> for the `noreturn` patch, which uses heuristics), as well as IBT vs. no
> IBT (i.e. running on individual object files vs. in `vmlinux`). I also
> did an arm64 build.
>
> Testing is very welcome for this one!
Verified that this eliminates the relevant warnings in an x86 build of
the android-mainline kernel.
Tested-by: Alice Ryhl <aliceryhl@google.com>
prev parent reply other threads:[~2024-07-25 9:43 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-24 16:14 [PATCH v2 0/6] Rust: support `CPU_MITIGATIONS` and enable `objtool` Miguel Ojeda
2024-07-24 16:14 ` [PATCH v2 1/6] rust: module: add static pointer to `{init,cleanup}_module()` Miguel Ojeda
2024-07-24 19:46 ` Gary Guo
2024-07-25 17:44 ` Miguel Ojeda
2024-07-25 17:46 ` Miguel Ojeda
2024-07-25 17:47 ` Miguel Ojeda
2024-07-30 11:18 ` Gary Guo
2024-07-24 16:14 ` [PATCH v2 2/6] x86/rust: support MITIGATION_RETPOLINE Miguel Ojeda
2024-07-24 19:38 ` Gary Guo
2024-07-24 16:14 ` [PATCH v2 3/6] x86/rust: support MITIGATION_RETHUNK Miguel Ojeda
2024-07-24 19:40 ` Gary Guo
2024-07-24 16:14 ` [PATCH v2 4/6] x86/rust: support MITIGATION_SLS Miguel Ojeda
2024-07-24 19:42 ` Gary Guo
2024-07-24 16:14 ` [PATCH v2 5/6] objtool: list `noreturn` Rust functions Miguel Ojeda
2024-07-24 19:35 ` Gary Guo
2024-07-25 8:33 ` Peter Zijlstra
2024-08-21 15:28 ` Gary Guo
2024-07-24 16:14 ` [PATCH v2 6/6] objtool/kbuild/rust: enable objtool for Rust Miguel Ojeda
2024-07-24 21:51 ` [PATCH v2 0/6] Rust: support `CPU_MITIGATIONS` and enable `objtool` Benno Lossin
2024-07-25 8:38 ` Peter Zijlstra
2024-07-25 9:53 ` Miguel Ojeda
2024-07-25 9:43 ` Alice Ryhl [this message]
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