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Tue, 19 May 2026 15:12:28 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.87.85.9]) by smtpav01.fra02v.mail.ibm.com (Postfix) with ESMTP; Tue, 19 May 2026 15:12:28 +0000 (GMT) From: Jan Polensky To: hca@linux.ibm.com, gor@linux.ibm.com, agordeev@linux.ibm.com, ojeda@kernel.org, peterz@infradead.org, jpoimboe@kernel.org, jbaron@akamai.com, aliceryhl@google.com Cc: borntraeger@linux.ibm.com, svens@linux.ibm.com, boqun@kernel.org, gary@garyguo.net, bjorn3_gh@protonmail.com, lossin@kernel.org, a.hindborg@kernel.org, tmgross@umich.edu, dakr@kernel.org, rostedt@goodmis.org, ardb@kernel.org, linux-s390@vger.kernel.org, rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 0/4] s390: enable Rust support and add required arch glue Date: Tue, 19 May 2026 17:12:10 +0200 Message-ID: <20260519151215.1611802-1-japo@linux.ibm.com> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNTE5MDE1MCBTYWx0ZWRfX/fS8GrSPcyxn 70FnRew01ejcxWbR5F3NIh3Q1bZq/FEFGJkU/62qx9MpZRc9q9Xtd2SOrFhqSrytpj4PtiXyTlK TofPQg/eQDLe6ygy1SaW6s9Td/xFWDET3nkSMzyitiNYkJGBuelhkjTOY2qEVck/A30RNIlFTVx 8CsCV3rHm4CXiK8sHrPulZnSephyiyLy0LD5CsTbtduxQZW6MLCCegc4bnheXV3sEZ4JuL6ogy8 Msu3M2SrZ1izF0tDLAP8qqujICUONEuxH2/0VDRK+eoW8J3k82jtHpqCiIAlXKPMDlKMQRvfK4e wSzPaNaIPNpvRKPrUYNB9UXi08VoEdIQamWcX8lqBX0Qphae9FOTHkzC+niwp8oqAasbXn6C1sm 61h46dXYvuaGTjQDM1+gXVzOMi55IVtNzQbNiFIHq0Wx339i9M5NsPbnkCxUOLPK8zT3vryR5tc mqdG+XUMpI0aPLkHeXg== X-Proofpoint-GUID: 431JvpuIJaNBeHdEDFGl4OrE2p5-eF3C X-Proofpoint-ORIG-GUID: XGQuKXRkba10PzmjIOpD9nX8zg6W0Vko X-Authority-Analysis: v=2.4 cv=aYBRWxot c=1 sm=1 tr=0 ts=6a0c7de2 cx=c_pps a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17 a=NGcC8JguVDcA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=Y2IxJ9c9Rs8Kov3niI8_:22 a=NEAV23lmAAAA:8 a=ynQKOEzQyDeFR-uBsnYA:9 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-05-19_04,2026-05-18_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 adultscore=0 bulkscore=0 suspectscore=0 lowpriorityscore=0 clxscore=1015 spamscore=0 phishscore=0 priorityscore=1501 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605130000 definitions=main-2605190150 Rust support on s390 requires a small set of architecture-specific pieces before the generic Rust kernel infrastructure can be used. The series wires up s390 as a Rust-capable 64-bit architecture, adds the missing assembly interfaces needed by Rust for WARN/BUG reporting and for static branches, and adjusts bindgen parameters to avoid repr layout conflicts caused by packed and aligned s390 structures. s390 currently requires a rustc due to -Zpacked-stack, and the minimum tool version gating is adjusted accordingly. Link: https://github.com/Rust-for-Linux/linux/issues/2 Tested against: rustc 1.96.0-beta.7 (6be5f81e1 2026-05-17) Changes since v1: - strip the -nightly suffix in min-tool-version.sh (thanks miguel and alice) - ARCH_JUMP_TABLE_ENTRY() moved up to align comments properly (thanks Gary) - removed MONCODE_BUG to prevent 0U in non-C context in assembler (noted by Sashiko - AI) - prevent environment pollution by explicit initialization mflag := (noted by Sashiko - AI) Jan Polensky (4): s390/bug: Provide ARCH_WARN_ASM for Rust WARN/BUG support s390/jump_label: Implement ARCH_STATIC_BRANCH_JUMP_ASM and ARCH_STATIC_BRANCH_ASM macros rust/bindgen_parameters: Mark s390 types as opaque to prevent repr conflicts s390: enable Rust support Documentation/rust/arch-support.rst | 1 + arch/s390/Kconfig | 1 + arch/s390/Makefile | 29 +++++++++++++++---------- arch/s390/include/asm/bug.h | 12 +++++++++++ arch/s390/include/asm/jump_label.h | 33 +++++++++++++++++------------ rust/Makefile | 1 + rust/bindgen_parameters | 7 ++++++ scripts/generate_rust_target.rs | 2 ++ scripts/min-tool-version.sh | 6 +++++- 9 files changed, 66 insertions(+), 26 deletions(-) base-commit: ab5fce87a778cb780a05984a2ca448f2b41aafbf -- 2.51.0