{"id":2233342,"url":"http://patchwork.ozlabs.org/api/1.1/covers/2233342/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/cover/cover.1778057685.git.sayalip@linux.ibm.com/","project":{"id":2,"url":"http://patchwork.ozlabs.org/api/1.1/projects/2/?format=json","name":"Linux PPC development","link_name":"linuxppc-dev","list_id":"linuxppc-dev.lists.ozlabs.org","list_email":"linuxppc-dev@lists.ozlabs.org","web_url":"https://github.com/linuxppc/wiki/wiki","scm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git","webscm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/"},"msgid":"","date":"2026-05-06T09:06:11","name":"[0/3] MCE robustness fixes and LKDTM powerpc enhancements","submitter":{"id":92656,"url":"http://patchwork.ozlabs.org/api/1.1/people/92656/?format=json","name":"Sayali Patil","email":"sayalip@linux.ibm.com"},"mbox":"http://patchwork.ozlabs.org/project/linuxppc-dev/cover/cover.1778057685.git.sayalip@linux.ibm.com/mbox/","series":[{"id":502942,"url":"http://patchwork.ozlabs.org/api/1.1/series/502942/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=502942","date":"2026-05-06T09:06:11","name":"MCE robustness fixes and LKDTM powerpc enhancements","version":1,"mbox":"http://patchwork.ozlabs.org/series/502942/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/covers/2233342/comments/","headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linuxppc-dev@lists.ozlabs.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256\n header.s=pp1 header.b=KeRsek6q;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=112.213.38.117; helo=lists.ozlabs.org;\n envelope-from=linuxppc-dev+bounces-20511-incoming=patchwork.ozlabs.org@lists.ozlabs.org;\n receiver=patchwork.ozlabs.org)","lists.ozlabs.org;\n arc=none smtp.remote-ip=148.163.158.5","lists.ozlabs.org;\n dmarc=pass (p=none dis=none) header.from=linux.ibm.com","lists.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256\n header.s=pp1 header.b=KeRsek6q;\n\tdkim-atps=neutral","lists.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=linux.ibm.com\n (client-ip=148.163.158.5; helo=mx0b-001b2d01.pphosted.com;\n envelope-from=sayalip@linux.ibm.com; receiver=lists.ozlabs.org)"],"Received":["from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4g9Tyk5vc6z1yJx\n\tfor ; Wed, 06 May 2026 19:06:38 +1000 (AEST)","from boromir.ozlabs.org (localhost [127.0.0.1])\n\tby lists.ozlabs.org (Postfix) with ESMTP id 4g9Tyg4Dgsz30Cd;\n\tWed, 06 May 2026 19:06:35 +1000 (AEST)","from mx0b-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com\n [148.163.158.5])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature RSA-PSS (2048 bits) server-digest\n SHA256)\n\t(No client certificate requested)\n\tby lists.ozlabs.org (Postfix) with ESMTPS id 4g9Tyf30QFz2xdh\n\tfor ; Wed, 06 May 2026 19:06:33 +1000 (AEST)","from pps.filterd (m0353725.ppops.net [127.0.0.1])\n\tby mx0a-001b2d01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id\n 645Iopvv3267730;\n\tWed, 6 May 2026 09:06:23 GMT","from ppma22.wdc07v.mail.ibm.com\n (5c.69.3da9.ip4.static.sl-reverse.com [169.61.105.92])\n\tby mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 4dw9xxq5qp-1\n\t(version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT);\n\tWed, 06 May 2026 09:06:22 +0000 (GMT)","from pps.filterd (ppma22.wdc07v.mail.ibm.com [127.0.0.1])\n\tby ppma22.wdc07v.mail.ibm.com (8.18.1.7/8.18.1.7) with ESMTP id\n 6468t1v7025770;\n\tWed, 6 May 2026 09:06:22 GMT","from smtprelay07.fra02v.mail.ibm.com ([9.218.2.229])\n\tby ppma22.wdc07v.mail.ibm.com (PPS) with ESMTPS id 4dwuyw5ke1-1\n\t(version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT);\n\tWed, 06 May 2026 09:06:22 +0000 (GMT)","from smtpav07.fra02v.mail.ibm.com (smtpav07.fra02v.mail.ibm.com\n [10.20.54.106])\n\tby smtprelay07.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id\n 64696ICG40698334\n\t(version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK);\n\tWed, 6 May 2026 09:06:18 GMT","from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1])\n\tby IMSVA (Postfix) with ESMTP id 7178620043;\n\tWed, 6 May 2026 09:06:18 +0000 (GMT)","from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1])\n\tby IMSVA (Postfix) with ESMTP id 194702004E;\n\tWed, 6 May 2026 09:06:16 +0000 (GMT)","from li-3f69264c-2ce6-11b2-a85c-c3f414d24014.bl1-in.ibm.com (unknown\n [9.123.3.209])\n\tby smtpav07.fra02v.mail.ibm.com (Postfix) with ESMTP;\n\tWed, 6 May 2026 09:06:15 +0000 (GMT)"],"ARC-Seal":"i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1778058395;\n\tcv=none;\n b=AXzDlh0xxpw1NzBB3+SD6QI9/uX/PG/bmtBO1L5syaWvhvX/Gph0X32G4dWPdZyLI2gjnvhkhPtvMVhM6aBQ2gZ02Lmee2MC2t8TtGteMtOisBuqjoY64WcUJG7gKyX6KPa+KjWK75yz1sHJiNYbqaE8VIY/a78XZygAr14S4PB98uP+QcpcFtRPfU9Om6peVYPY9kXJAD5XKUJN0dr1MIa6HzF2Z6/PPspvt5UOv66w6MrlTgIuMDtXGX8b3Zsi9fKoV4khm9ATFHnmuCzhMSuQaX/RS9nchV6aVQV6saJDcVk59eStH9x5xFx54rG0Ir9JEkM5ZMLuqIh/gJ+cbg==","ARC-Message-Signature":"i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707;\n\tt=1778058395; c=relaxed/relaxed;\n\tbh=YFcTt2pbZMFoTbce5E0y/0SJHipPDV+HRis6c0vyz5Q=;\n\th=From:To:Cc:Subject:Date:Message-ID:MIME-Version;\n b=FNdOseJVAPDa4DVcx+dtLTrbuFgHuOeoV8e9ctVGpYroyEx1EcWqeKPbMPQ41EZxNMf8DJQILMPJcq1JU8K/BVcdn/TmMkLMxU1VSzoXpqYzGTQJjqukXsgdCgiQB5MlflDF/lTUfudQOLR13VnwZ3GbXxLDy6O9uq66P5GhxOgTWsX6CHYc++tdx4ZSm1PcGKpoePAp8XOkLPNzID7P6KDQNyyS5VJBqDK/+RJBaYij9GYBzhR6WZYmuJwteingpySSmLTPJ8cCb1oMTHf+/GeNmHQ9G+ZZh9VEq13TcwvRMwxMtyqLuSCcmkPGAmqRPLYHzB68JRHso0cgeE7Mtg==","ARC-Authentication-Results":"i=1; lists.ozlabs.org;\n dmarc=pass (p=none dis=none) header.from=linux.ibm.com;\n dkim=pass (2048-bit key;\n unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256\n header.s=pp1 header.b=KeRsek6q; dkim-atps=neutral;\n spf=pass (client-ip=148.163.158.5; helo=mx0b-001b2d01.pphosted.com;\n envelope-from=sayalip@linux.ibm.com;\n receiver=lists.ozlabs.org) smtp.mailfrom=linux.ibm.com","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc\n\t:content-transfer-encoding:date:from:message-id:mime-version\n\t:subject:to; s=pp1; bh=YFcTt2pbZMFoTbce5E0y/0SJHipPDV+HRis6c0vyz\n\t5Q=; b=KeRsek6qWCH3y4M+DOnwOWf5hbj/tLkoxuy5nyeW24lFfVyxzNYkX3YVP\n\tj/Sz98udntKjneyF+PLiLjV/d0b3IXYGd4SRKumGPMIUa5+nLBTn0Sh8dVrfeujR\n\tG4+s+bqLYyD3+CkFrVn0pgC5FWSfPbeZKA35Nr7VvWTZXCqhajEHNUIkb9HWM/1M\n\tUqEzsQte3wwNYnGRuAcbIYo4OycDZnVP18tJXVW0uP4VAM2yxoFTrpskjYqXCcX6\n\tCrMCi/r5Ej4RqiOYty2ad5+xxATcRuv5xxtzE6V5YDWpzBCEk/YhjMAeLF9XbGji\n\tjorvoTqkEUedwIVL/Zi5eFIbae15w==","From":"Sayali Patil ","To":"linuxppc-dev@lists.ozlabs.org, maddy@linux.ibm.com","Cc":"linux-kernel@vger.kernel.org, Ritesh Harjani ,\n Mahesh Salgaonkar , sshegde@linux.ibm.com,\n chleroy@kernel.org","Subject":"[PATCH 0/3] MCE robustness fixes and LKDTM powerpc enhancements","Date":"Wed, 6 May 2026 14:36:11 +0530","Message-ID":"","X-Mailer":"git-send-email 2.52.0","X-Mailing-List":"linuxppc-dev@lists.ozlabs.org","List-Id":"","List-Help":"","List-Owner":"","List-Post":"","List-Archive":",\n ","List-Subscribe":",\n ,\n ","List-Unsubscribe":"","Precedence":"list","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":"AW1haW4tMjYwNTA2MDA4OCBTYWx0ZWRfX+9WRqitIvUOr\n AxbttCeFRLjKT6UkSLLQd80KXV9LKxGr6wMAFhfO/e0xD2ru+Irpsap6ApppkvM1L7GkrEtl8fN\n n1ZQX5Gd8anqXReqZxXM3oSAWupHIhAYPKdndA7rEdpN83dytGYDdhJwgQiBCE5PWSknlowKNJC\n 0QpF78xtBVBNwLXYZgCD5JLymdUxMZ5E3+anf3zJs9B0HPR7PY0cJPn/E36eyL6sQtZFrDs9z6L\n 7w3EGfFgNtSP6B7yUHl52wH4+jkM3Pbw9Ha+RVYZMCg0zcIC4WvKKnk5n1mLWZEwMuCwv7VCwt/\n Bfdc3vbqbs2ffOG/C0GqM8xRFmww5O6oIQL3zTeRCBVhPtf8c6YJ7Rzmi+0hio1dEJPHx77894/\n R3bwJOzKs3LW5gtC2sTKLaaahY0qS63PaIJK/uDXtZ8cKbCKIBOnnaVMotka0751LPW/P4Z0Fpb\n SVyPjcl55pjSt8lFIKg==","X-Proofpoint-ORIG-GUID":"sgZyMQBvrbCHfiM67QmXQG3JSN5tCeeP","X-Proofpoint-GUID":"0DiLvGPqNPpeJG3St9KNvRBSTFW8mNFC","X-Authority-Analysis":"v=2.4 cv=ctWrVV4i c=1 sm=1 tr=0 ts=69fb048f cx=c_pps\n a=5BHTudwdYE3Te8bg5FgnPg==:117 a=5BHTudwdYE3Te8bg5FgnPg==:17\n a=NGcC8JguVDcA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22\n a=V8glGbnc2Ofi9Qvn3v5h:22 a=4LFl1V1j6vrMI3_rxnIA:9","X-Proofpoint-Virus-Version":"vendor=baseguard\n engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49\n definitions=2026-05-05_03,2026-04-30_02,2025-10-01_01","X-Proofpoint-Spam-Details":"rule=outbound_notspam policy=outbound score=0\n priorityscore=1501 lowpriorityscore=0 adultscore=0 clxscore=1015\n suspectscore=0 impostorscore=0 spamscore=0 malwarescore=0 phishscore=0\n bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound\n adjust=0 reason=mlx scancount=1 engine=8.22.0-2604200000\n definitions=main-2605060088","X-Spam-Status":"No, score=-0.7 required=3.0 tests=DKIM_SIGNED,DKIM_VALID,\n\tRCVD_IN_DNSWL_LOW,RCVD_IN_MSPIKE_H4,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,\n\tSPF_PASS autolearn=disabled version=4.0.1 OzLabs 8","X-Spam-Checker-Version":"SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org"},"content":"Hi all,\n\nThis series fixes a panic observed while handling machine check exceptions\n(MCEs) from real mode. It also improves the reliability of the\nPPC_SLB_MULTIHIT test by adding isync instructions after slbmte operations,\nand introduces a new LKDTM trigger (PPC_RADIX_TLBIEL) to validate MCE\nbehavior on radix MMU.\n\nPlease review the patches and provide any feedback or suggestions\nfor improvement.\n\nThanks,\nSayali\n\nSayali Patil (3):\n powerpc/time: remove preempt_disable/enable from arch_irq_work_raise()\n lkdtm/powerpc: add isync after slbmte to enforce SLB update ordering\n lkdtm/powerpc: add PPC_RADIX_TLBIEL test for radix MCE validation\n\n arch/powerpc/kernel/time.c | 2 --\n drivers/misc/lkdtm/Makefile | 2 +-\n drivers/misc/lkdtm/powerpc.c | 44 +++++++++++++++++++++++++\n tools/testing/selftests/lkdtm/tests.txt | 1 +\n 4 files changed, 46 insertions(+), 3 deletions(-)"}