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Thu, 21 May 2026 17:03:05 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.87.85.9]) by smtpav03.fra02v.mail.ibm.com (Postfix) with ESMTP; Thu, 21 May 2026 17:03:05 +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 v3 0/4] s390: Enable Rust support and add required arch glue Date: Thu, 21 May 2026 18:56:18 +0200 Message-ID: <20260521165622.279953-1-japo@linux.ibm.com> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: linux-s390@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-Authority-Analysis: v=2.4 cv=ffCdDUQF c=1 sm=1 tr=0 ts=6a0f3acf cx=c_pps a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17 a=NGcC8JguVDcA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=U7nrCbtTmkRpXpFmAIza:22 a=NEAV23lmAAAA:8 a=ynQKOEzQyDeFR-uBsnYA:9 X-Proofpoint-ORIG-GUID: FcvH7iTmKM25oyrjW4HWmxY3jfSDcnk5 X-Proofpoint-GUID: SUHkONwSPJ2WK3eMzTh8Jf32T3gK1kQ9 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNTIxMDE2NyBTYWx0ZWRfX+lee+y1lkyeO iDQgricShLtqW/RjxgSHydHyeJ5O31rJJYWqHsuyVn93Sw/VG3XORTu3vHKTnOc4TsGxJDMuX0b M4L/mJHqgdp8EJzqWnt9IJaq1GbvLtLBCbPIfumrZf+CITrlGKOnVelvdpzZNFupTwD8TKtkV7e 2PsmrZE8mcC7ZJPKOx7m1JHswr1kZheAt6s22UAYjTQa/bcmot0iXLSReHh24xLMNGgmwJks7Rc eylCNcJMk19DvCST00pwmBor3BlL7Ji+ZBqh+6Oty+X3TVe+aAzDE3Gy8xiCCnD6yPzd3ABJqE9 05PMvZF/lO5F63o+EXH7pAh0nZtFXO2EFRYiiflQD0PBk2YMxsOj+XK86NZqwOxDbUp5i+Wti5p S5DBKnRi21RZvQarv1zFX+jyESY22COZaemBLk4qjlI51hPFQz5TuIwizYIvKISfMhWS18cK0HX WkW65AnlwCcl8zbD8qQ== 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=2026-05-21_03,2026-05-18_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 spamscore=0 phishscore=0 suspectscore=0 adultscore=0 clxscore=1015 impostorscore=0 lowpriorityscore=0 bulkscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605130000 definitions=main-2605210167 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 v2: - mflags: cleanup (thanks Gary) 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 | 28 ++++++++++++++---------- 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, 65 insertions(+), 26 deletions(-) base-commit: 758c807bb943138f887d42d986b645e12446ba9c -- 2.51.0