From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0b-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3A3E13D9DB7; Thu, 21 May 2026 17:03:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.163.158.5 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779383014; cv=none; b=Ds1/NkMfs4ZDxD9bb1YMUzjunc08NGcSrKuXlfRLu6Oeu06sNIVYza5sah1IbHDDzAkB3u2cVjAK6YqzUMav5N3ZVz7ZEreKzkpqYbpgrr/YQ1kb72WbBV7T9uXea68YVMewJHA92pGRvGVWyw7OBCIRus6wVTyk8u0b7Ifwtpo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779383014; c=relaxed/simple; bh=rSsUhmRk1T4KmL0Xs0s66E1ODoRrF1MQgNpA5nUuYjQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=A9eh6tnqhZFR5G8Nr5J9EfO65XUs1tUa9omou8mj4N+HBIxQ8XM6SufCrV90vwIPPjNHejQuqjnqEtDc1mksR5vJGH6pW99zGT0Jj13bcRCDUVr+5DOUM2VDIiQXEKpqasDpvprAQBYFRIN+F8FFMek8QnDtaSnYOLpZMKVuxkQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com; spf=pass smtp.mailfrom=linux.ibm.com; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b=dLb9N0JG; arc=none smtp.client-ip=148.163.158.5 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b="dLb9N0JG" Received: from pps.filterd (m0353725.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 64LFQw32685729; Thu, 21 May 2026 17:03:12 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc :content-transfer-encoding:date:from:in-reply-to:message-id :mime-version:references:subject:to; s=pp1; bh=Kk32Fc2nYKGVpKhLP afzmCRMMiatjxD09qo2Q8kAwhE=; b=dLb9N0JG+M2eQmPZz2zI5926VRj9XAeJc 7PyNo8cKsh7RjkM4dOpDkq6J0Jm1kpZD381IL3+3nBpRoxj0xoVErW8qyrbpHXOD TMN46AgqVaIsvfWm7h1byMXfb2l7kNWCiHfhRyWYYt3JXmumpfA3dta3YnqbS5as Y5b1c5RlNIogq/bFvTH9W31zWSxsTR2lrZTsMyx1rhq4wJEKD4T9usAmqEC3eIYF GH7J/wXsvGqkEGZVkasR9fMIFVwCQCBUAC8lKIqAKuvnqbGGIPwYA6W2eKd77JRz 7ZWJqSaUzacA4xL6YqViUvNArjrep2k1T9XHBVyBvh9I2gLjZjL4A== Received: from ppma11.dal12v.mail.ibm.com (db.9e.1632.ip4.static.sl-reverse.com [50.22.158.219]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 4e6h88py4w-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 21 May 2026 17:03:11 +0000 (GMT) Received: from pps.filterd (ppma11.dal12v.mail.ibm.com [127.0.0.1]) by ppma11.dal12v.mail.ibm.com (8.18.1.7/8.18.1.7) with ESMTP id 64LGs5Qw019147; Thu, 21 May 2026 17:03:10 GMT Received: from smtprelay06.fra02v.mail.ibm.com ([9.218.2.230]) by ppma11.dal12v.mail.ibm.com (PPS) with ESMTPS id 4e75kyd10t-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 21 May 2026 17:03:10 +0000 (GMT) Received: from smtpav03.fra02v.mail.ibm.com (smtpav03.fra02v.mail.ibm.com [10.20.54.102]) by smtprelay06.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 64LH36nI28836256 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 21 May 2026 17:03:06 GMT Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 94C152004B; Thu, 21 May 2026 17:03:06 +0000 (GMT) Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 5BE0D2005A; Thu, 21 May 2026 17:03:06 +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 17:03:06 +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 3/4] rust/bindgen_parameters: Mark s390 types as opaque to prevent repr conflicts Date: Thu, 21 May 2026 18:56:21 +0200 Message-ID: <20260521165622.279953-4-japo@linux.ibm.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260521165622.279953-1-japo@linux.ibm.com> References: <20260521165622.279953-1-japo@linux.ibm.com> Precedence: bulk X-Mailing-List: rust-for-linux@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-ORIG-GUID: SPJsgGQsoZl2EpRPkzmAqnR9N9NMPmE3 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNTIxMDE2NyBTYWx0ZWRfX9hjq97K6vsql 9P69+ib0q++v6WFq9dIB9h8N/SPTWaR4CRN01eF1X1nsarQjte+huBj/zS+JHGT/C5OsxjDLWZj 1OeKP2pvQ+BwiXkrAxV387XaUkTTgHl2aOshTKH7Bat3w/obJCEgl3sVnBFZD8m6sHgYVF3YUiB HLAqAW4cuNpvwqzadkJujQKiuMssgQ1QTIzSN8CRGFvNuF7O74MxT9o62F80iJblcsUWzikCRY0 Fkk966T6Q2Rt6H0doQQ+qwb2MDyBW+sc/Sdtcgfc9SSDBPvoc1crpd1bLEP9h219Bn1oN7w51DE SNjwQkq8yJvZQg0mpFW93W+xveaIF0qLnuKBsettVDNdnRyrhQVGcyj5Qevxpb1nfojxMW0AZj5 4mXkRegp/bmu+57ysc/JCj3kVuKEb57hVb5Pc284vchScyeXOZalcTy0AVIlt9Vf64JpYUeVOSw DybuI5ijHZ63XCQ+hUg== X-Proofpoint-GUID: 1-ct3DQhwc9w3nwZqObQUbbGFnv8kX-p X-Authority-Analysis: v=2.4 cv=apyCzyZV c=1 sm=1 tr=0 ts=6a0f3acf cx=c_pps a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17 a=NGcC8JguVDcA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=V8glGbnc2Ofi9Qvn3v5h:22 a=VwQbUJbxAAAA:8 a=QyXUC8HyAAAA:8 a=_2yia0w1AAAA:8 a=VnNF1IyMAAAA:8 a=Ulcv6RcHQRQKaI22KjAA:9 a=4yAS8WwzZ1jAEY03B-5r:22 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 malwarescore=0 lowpriorityscore=0 priorityscore=1501 impostorscore=0 bulkscore=0 suspectscore=0 adultscore=0 spamscore=0 phishscore=0 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605130000 definitions=main-2605210167 Bindgen attempts to generate Rust layouts for a number of s390 structs that are packed but contain, or transitively contain, aligned fields. Rust rejects such layouts with E0588 ("packed type cannot transitively contain a #[repr(align)] type"). Add the affected s390 types to the opaque type list so bindgen emits opaque blob types instead of full representations. This matches existing workarounds for x86 types such as alt_instr and x86_msi_data. References: https://lore.kernel.org/all/e5c7aa10-590d-0d20-dd3b-385bee2377e7@intel.com/ Reviewed-by: Gary Guo Signed-off-by: Jan Polensky --- rust/bindgen_parameters | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/rust/bindgen_parameters b/rust/bindgen_parameters index 6f02d9720ad2..8402b0c93545 100644 --- a/rust/bindgen_parameters +++ b/rust/bindgen_parameters @@ -14,6 +14,13 @@ --opaque-type alt_instr --opaque-type x86_msi_data --opaque-type x86_msi_addr_lo +# s390-only: same packed/align issue as above (E0588). +--opaque-type lowcore +--opaque-type tod_clock +--opaque-type tpi_info +--opaque-type uv_cb.* +--opaque-type uv_secret.* +--opaque-type zpci_fib # If SMP is disabled, `arch_spinlock_t` is defined as a ZST which triggers a Rust # warning. We don't need to peek into it anyway. -- 2.51.0