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 9C20D36EAAE; Thu, 24 Sep 2026 05:03:10 +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=1790226192; cv=none; b=KjANQ5AeGkAXSb5PqPcChiqoKkaorGtS9fO2RznVRtd6rSU/zGabh+1HORkDck6YVgcIk4hFS92elBRzI44Y6GB/fBf8tNGVoDYmSv6aHJ74P1ScNMtK3egrg3MewtAlwIuXYsDZC6buU9kYXF49isF5eXE6Sprek8eN/7oZzSs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790226192; c=relaxed/simple; bh=73ZlyzTOwzjD4wf1mAXpiIHbcfkZnOxq/eVWjUFftqA=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version:Content-Type; b=C6tjX3ih2KUChjSYwMmfvnxGmrij+oaIOMXDyjuHtV5JtMHbAGnJljAyxFM+26AaEpTZ04Vxj8H2ysCbwK5CxOhf9tASh+uQFbHdnkQHxiePK+p4AcUmzmb6eexrHnNuD2VKNnnsU/kr+lWsKPQ+dYKyb/4H4IA346InOj5/iQM= 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=gQ08j1FM; 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="gQ08j1FM" Received: from pps.filterd (m0360072.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 68O2aTrv977372; Thu, 24 Sep 2026 05:03:09 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc :content-transfer-encoding:content-type:date:from:message-id :mime-version:subject:to; s=pp1; bh=+9JTNbPjMO1tN5oHiZjp5WEGe1rV cKEtW2ZTrvtx1h8=; b=gQ08j1FM6F56ptMSFmr7CcxoLZ9cICKL3+GbfMrwV0mT c3JkDJh3/0oBDBf9a6x7eAIJzQHVHeXb+dPirtwLm40uhZvVv+k1bWHQI41KQKYS CFSvpLwH/xwvkhrrdG8kZ7RqkWdEoTQoAVFg1xufHeynglu9bZv1Jb0SVZARuRlZ TD3+92twbYQJRN8FjVFiSsYfFmh5U/Q+wZH82XJOJ92NEczJ8GH7ID9K2OPd82Lx nPaC3E2Ky8rEaR/3Szg/9ayPAs5LgdKfG1VWvtvLHqw0EkfPbEwjfMBIJyBYHobQ 318sONwNyHJIaJMmhWExsTmo3YnnPG23fuDHjNMzww== Received: from ppma13.dal12v.mail.ibm.com (dd.9e.1632.ip4.static.sl-reverse.com [50.22.158.221]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 4gskdvefax-1 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NOT); Thu, 24 Sep 2026 05:03:09 +0000 (GMT) Received: from pps.filterd (ppma13.dal12v.mail.ibm.com [127.0.0.1]) by ppma13.dal12v.mail.ibm.com (8.18.1.11/8.18.1.11) with ESMTP id 68O2ZeUa005650; Thu, 24 Sep 2026 05:03:08 GMT Received: from smtprelay02.fra02v.mail.ibm.com ([9.218.2.226]) by ppma13.dal12v.mail.ibm.com (PPS) with ESMTPS id 4gvu7e8ch8-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 24 Sep 2026 05:03:08 +0000 (GMT) Received: from smtpav03.fra02v.mail.ibm.com (smtpav03.fra02v.mail.ibm.com [10.20.54.102]) by smtprelay02.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 68O534Km39256442 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 24 Sep 2026 05:03:04 GMT Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id C253B2004B; Thu, 24 Sep 2026 05:03:04 +0000 (GMT) Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 917EE20040; Thu, 24 Sep 2026 05:03:04 +0000 (GMT) Received: from tuxmaker.lnxne.boe (unknown [9.87.85.9]) by smtpav03.fra02v.mail.ibm.com (Postfix) with ESMTP; Thu, 24 Sep 2026 05:03:04 +0000 (GMT) From: Nihar Panda To: linux-s390@vger.kernel.org, vneethv@linux.ibm.com, oberpar@linux.ibm.com Cc: linux-kernel@vger.kernel.org, gor@linux.ibm.com, agordeev@linux.ibm.com, hca@linux.ibm.com, wintera@linux.ibm.com, bblock@linux.ibm.com, nagamani@linux.ibm.com Subject: [PATCH v2 0/1] s390/qdio: Ensure QDIO_IRQ_STATE_ACTIVE is set only after firmware activates. Date: Thu, 24 Sep 2026 07:01:35 +0200 Message-ID: <20260924050217.2583852-1-niharp@linux.ibm.com> X-Mailer: git-send-email 2.53.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: 46bs4uEdn3PrOk0ns0CoiSwNZf4GvMHR X-Proofpoint-Spam-Info: AW1haW4tMjYwOTI0MDAyMCBTYWx0ZWRfXwxg8awGNBj4X 0J+DXX/cdXtgTYUnkWmPWtDwBNlAWuV0Xv8u/H4Cm/nv4xSzP8kZE69TrWcjZrKGsSdgcUkzN0Q XmUuR0qvsUBI2jWmjdDZP1TMjpQTp+Q= X-Authority-Analysis: v=2.4 cv=FLiOVOos c=1 sm=1 tr=0 ts=6ab4af0d cx=c_pps a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17 a=IkcTkHD0fZMA:10 a=VdqzKS8jKosA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=RzCfie-kr_QcCd8fBx8p:22 a=1RjKuTH46G08LcsVwEQA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 X-Proofpoint-GUID: 46bs4uEdn3PrOk0ns0CoiSwNZf4GvMHR X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTI0MDAyMCBTYWx0ZWRfXzORMzyrKri+J ERhYl7IHxWN/keSb5pKRRpXc83LcWAEwQhNv5JG2hGzoly4QcMOqntSvc2yaccFYaTbT5RrZ7sz 8G8KvqRRYg3pdOvs5Ii2TBbqmo6/IIHk4AOxmewMcWJ7l3htLepQvdYTkQh3Mej+9lFPG5mmotC fsn5rphDfsxpEzm3hLHIfztX45qrCEGXfbHu+sNIw2NRmrIMKcY5Ux8M2R7NsCD+T8AS+RGlJB7 U+zo17oYlxa40vyKsQe5O567375qiRK+RzwKFso5psDnM+CktLwmVYqova1LtgJIL7TT/CLBuhJ ls+R8Gm7JhEY7KhBJLra643FiKaB8UFTBOv/v2nJbGSs8xEjKJyt9b58UUkpxbFUQ0zjjpaUQib zCSQVl7ko0A62xWfU2qP5BYMwKTAR+oe45ATSnPw7H/Jr2w8MdRJz5RzZb40u5DZesbl9IytrW8 6xLmwGsPkUyZ5AhGGiQ== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-09-24_01,2026-09-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 impostorscore=0 phishscore=0 spamscore=0 clxscore=1015 suspectscore=0 bulkscore=0 lowpriorityscore=0 priorityscore=1501 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2609240020 Data Race Fix:  Moved the execution of cio_update_schib() and qdio_set_state() under ccwdev_lock. This prevents a data race on the shared sch->schib structure and ensures qdio_set_state() does not overwrite a STOPPED/ERR state when called locklessly (as identified by Sashiko AI). Timeout Optimization:  Converted the timeout polling loop from a while to a do..while loop. This fixes a preemption bug where a thread interruption could trigger a false ETIMEDOUT failure before the loop body could execute even once. Nihar Panda (1): s390/qdio: Ensure QDIO_IRQ_STATE_ACTIVE is set only after firmware activates. arch/s390/include/asm/scsw.h | 4 +-- drivers/s390/cio/qdio_main.c | 59 +++++++++++++++++++++++++++--------- 2 files changed, 47 insertions(+), 16 deletions(-) -- 2.53.0