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([2001:871:22a:d2a7::cebd]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-43b9192e528sm8063097f8f.1.2026.03.26.07.31.28 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 26 Mar 2026 07:31:29 -0700 (PDT) Message-ID: <9cf5a94c-0f37-446c-b63d-ddac5674d220@gmail.com> Date: Thu, 26 Mar 2026 15:31:26 +0100 Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 0/3] Inline helpers into Rust without full LTO To: Miguel Ojeda , Alice Ryhl , Ard Biesheuvel , Jamie Cunliffe , Will Deacon , Catalin Marinas Cc: "Russell King (Oracle)" , Miguel Ojeda , a.hindborg@kernel.org, acourbot@nvidia.com, akpm@linux-foundation.org, anton.ivanov@cambridgegreys.com, bjorn3_gh@protonmail.com, boqun.feng@gmail.com, dakr@kernel.org, david@davidgow.net, gary@garyguo.net, johannes@sipsolutions.net, justinstitt@google.com, linux-arm-kernel@lists.infradead.org, linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-um@lists.infradead.org, llvm@lists.linux.dev, lossin@kernel.org, mark.rutland@arm.com, mmaurer@google.com, morbo@google.com, nathan@kernel.org, nick.desaulniers+lkml@gmail.com, nicolas.schier@linux.dev, nsc@kernel.org, peterz@infradead.org, richard@nod.at, rust-for-linux@vger.kernel.org, tmgross@umich.edu, urezki@gmail.com References: <20260322192159.88138-1-ojeda@kernel.org> <20260323000327.111235-1-ojeda@kernel.org> Content-Language: en-US, de-DE From: Christian Schrefl In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Hi Miguel, On 3/26/26 2:47 PM, Miguel Ojeda wrote: > On Thu, Mar 26, 2026 at 11:10 AM Alice Ryhl wrote: >> >> I noticed that the Makefile currently uses the arm-unknown-linux-gnueabi >> target. It should probably not be -linux target to avoid this? Probably >> it should just be armv7a-none-eabi, right? We gate HAVE_RUST on >> CPU_32v7, so we should not need to consider the other variants. > > I think Christian tried several targets back then and eventually > picked that one. > > Christian: what was the reason to pick the `-linux-` one? e.g. was > there something you wanted to rely on that target spec that you > couldn't enable or disable via `rustc` flags or similar? It should probably be fine to use armv7a-none-eabi. I've mostly used arm-unknown-linux-gnueabi since I though it needed to match the bindgen-target (which is -linux-gnu for all architectures) and because from what I understand clang also uses arm-linux-gnueabi [1]. Also when I selected the target I thought that we would also support armv6, but since I had no v6 hardware to test on I disabled it. [1]: https://github.com/Rust-for-Linux/linux/blob/rust-next/scripts/Makefile.clang#L4 Cheers, Christian