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Mon, 6 Oct 2025 07:59:01 -0400 (EDT) X-Mailer: MessagingEngine.com Webmail Interface Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ThreadId: AOEbzVvuXYlJ Date: Mon, 06 Oct 2025 13:58:41 +0200 From: "Arnd Bergmann" To: "Naresh Kamboju" , Netdev , "Linux ARM" , "open list" , lkft-triage@lists.linaro.org, "Linux Regressions" , linux-rdma@vger.kernel.org Cc: "Ard Biesheuvel" , "Patrisious Haddad" , "Michael Guralnik" , "Moshe Shemesh" , "Tariq Toukan" , "Jakub Kicinski" , "Dan Carpenter" , "Anders Roxell" , "Benjamin Copeland" , "Nathan Chancellor" Message-Id: In-Reply-To: References: Subject: Re: next-20251002: arm64: gcc-8-defconfig: Assembler messages: Error: unknown architectural extension `simd;' Content-Type: text/plain Content-Transfer-Encoding: 7bit On Mon, Oct 6, 2025, at 13:31, Naresh Kamboju wrote: > + linux-rdma@vger.kernel.org > > On Mon, 6 Oct 2025 at 17:00, Naresh Kamboju wrote: >> ### Build error log >> /tmp/cclfMnj9.s: Assembler messages: >> /tmp/cclfMnj9.s:656: Error: unknown architectural extension `simd;' >> make[8]: *** [scripts/Makefile.build:287: >> drivers/net/ethernet/mellanox/mlx5/core/wc.o] Error 1 >> >> Suspecting commit, >> $ git blame -L 269 drivers/net/ethernet/mellanox/mlx5/core/wc.c >> fd8c8216648cd8 (Patrisious Haddad 2025-09-29 00:08:08 +0300 269) >> (".arch_extension simd;\n\t" >> fd8c8216648cd net/mlx5: Improve write-combining test reliability for >> ARM64 Grace CPUs >> >> ## Source >> * Kernel version: 6.17.0 >> * Git tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/next/linux-next.git >> * Git commit: 47a8d4b89844f5974f634b4189a39d5ccbacd81c >> * Architectures: arm64 >> * Toolchains: gcc-8 >> * Kconfigs: defconfig >> Nathan already analyzed the problem and suggested a fix, but I could not find a patch on the mailing list so far and sent his suggestion now. Please check https://lore.kernel.org/all/20251006115640.497169-1-arnd@kernel.org/ Arnd