From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists1p.gnu.org (lists1p.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id DC6BBC98314 for ; Thu, 24 Sep 2026 13:17:51 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists1p.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1x9jK9-0000sz-Df; Thu, 24 Sep 2026 09:17:17 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists1p.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1x9jJv-0000sX-75 for qemu-devel@nongnu.org; Thu, 24 Sep 2026 09:17:04 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1x9jJs-0003jp-Rr for qemu-devel@nongnu.org; Thu, 24 Sep 2026 09:17:02 -0400 Received: from pps.filterd (m0360083.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 68OC65912190525; Thu, 24 Sep 2026 13:16:53 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc :content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=pp1; bh=6x/WU7 B795GuO6bd44uf5jfhw4/mWkXamwyuWNfXH4Y=; b=B1bYnHFdZkOceMp01X7/nr uSZmmUenzEFmiiwVD1gwJvZwhB8WP2h2n9+SPwkClmzb8KxqJSKWkZHMR4t/GR11 Q0GxgknteoanafDzMPr42aOIsKhfbl4N+TaH/LSqO3TH+Y6wR4O5WlderYhDVfS3 cT6AMOx1oDP/vMbXI62SEkJb5tdgmAiUXxtWMQhohQNQ87JLkQhQeVbyB7gpr72q /xMMhDSSkq+rAxP9VeG/jIwycPU2Y51SbTLXazaVH2cTQFMLwG8OOg5I/6Wd26Lo 0g/aM4ETGMwbXOgmUuyFTsH3V578VtSmch6yNmHTKoUw3CNBuh4oXg43LNqtaNFA == 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 4gskg2sbqn-1 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NOT); Thu, 24 Sep 2026 13:16:53 +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 68OCHWHb720138; Thu, 24 Sep 2026 13:16:52 GMT Received: from smtprelay01.fra02v.mail.ibm.com ([9.218.2.227]) by ppma13.dal12v.mail.ibm.com (PPS) with ESMTPS id 4gvu7ea6w4-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 24 Sep 2026 13:16:52 +0000 (GMT) Received: from smtpav02.fra02v.mail.ibm.com (smtpav02.fra02v.mail.ibm.com [10.20.54.101]) by smtprelay01.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 68ODGoRt44368276 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 24 Sep 2026 13:16:51 GMT Received: from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D758E2004B; Thu, 24 Sep 2026 13:16:50 +0000 (GMT) Received: from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 935EC20040; Thu, 24 Sep 2026 13:16:48 +0000 (GMT) Received: from shivang.upadyay (unknown [9.39.19.125]) by smtpav02.fra02v.mail.ibm.com (Postfix) with ESMTP; Thu, 24 Sep 2026 13:16:48 +0000 (GMT) Message-ID: <59a6c0de163178a7571de6cf8a9530c14fa36c4d.camel@linux.ibm.com> Subject: Re: [PATCH] accel: Fix qtest deadlock during unplug From: Shivang Upadhyay To: Fabiano Rosas , qemu-devel@nongnu.org Cc: Paolo Bonzini , Richard Henderson , Philippe =?ISO-8859-1?Q?Mathieu-Daud=E9?= , Chinmay Rath , Doru =?ISO-8859-1?Q?Bl=E2nzeanu?= , Magnus Kulke Date: Thu, 24 Sep 2026 18:46:47 +0530 In-Reply-To: <87ld8s9kz1.fsf@suse.de> References: <20260918140037.3082357-1-farosas@suse.de> <87ld8s9kz1.fsf@suse.de> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.58.3 (3.58.3-1.fc43) MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: 6HNuKzJor1lUImpLuVV1mSdPMQSqOhW0 X-Authority-Analysis: v=2.4 cv=I43w19gg c=1 sm=1 tr=0 ts=6ab522c5 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=iQ6ETzBq9ecOQQE5vZCe:22 a=iCBkOSEqlL-OfskIUvMA:9 a=QEXdDO2ut3YA:10 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTI0MDA1NCBTYWx0ZWRfX/H/tJtT/4HBL B8OIF4j/wCL+5i79aWFxv5M0arhZ3CrqH31pn9Gdd5oyQvcdQKEjagCbwFpFAv+yltltZ7Be7jW N9mWLBB0yyIpKgrb5Xw75rcvJQFp4OFKfTUtUFPs/V2F7CdWAEnW3GSoXIcZ6Z1YC9TaSn5l/qy XLOL7sV02dp8YMApm0q7rhc90YSpQHwfDs+5E5K2O0Bu5s/lga3HbKfwg647sTYuZR7GiTx2nzd eDaI4H3PQiexlcUvNheWBzkwjdT7lpiLIGe5tMR4j6e0lIlrPNem2YL49vVGPUV+L0+TE29GgxD L2exddX36YLboUAqSyj72Xu/jaOlDAKbcyiA55mqW4CPBZJ8Zwyr4cWl6vQWq8HN5/Qq67bmw49 e67NCJ8kbWiQTCeCJqvqHqpI3Z0yYJBYAF+lnixUraXuMTMCoQtNxUtnPksFrM3lfz1N9HAyyPR fOQ+eplv5yHj1FWmCZw== X-Proofpoint-Spam-Info: AW1haW4tMjYwOTI0MDA1NCBTYWx0ZWRfXysZMUPy2ldA4 Q5oo+jM5G9r8jYEUio7fD96wo+2k/kd/npBRlaD4ZPV4uhwvP6F6IfUjlABbA/I6FDYa+4LjMtL s0j0KpwMD8XOX0rWriMr8Hqtkxm5BsE= X-Proofpoint-GUID: 6HNuKzJor1lUImpLuVV1mSdPMQSqOhW0 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_03,2026-09-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 clxscore=1011 adultscore=0 suspectscore=0 impostorscore=0 lowpriorityscore=0 bulkscore=0 phishscore=0 priorityscore=1501 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2609240054 Received-SPF: pass client-ip=148.163.156.1; envelope-from=shivangu@linux.ibm.com; helo=mx0a-001b2d01.pphosted.com X-Spam_score_int: -26 X-Spam_score: -2.7 X-Spam_bar: -- X-Spam_report: (-2.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On Wed, 2026-09-23 at 10:05 -0300, Fabiano Rosas wrote: >=20 > @Shivang, we're discussing about cpu_remove_sync() down in this > thread, > maybe that's of interest to you. Philippe is suggesting we could > maybe > move the call up a layer. Hi Fabiano,=20 I checked the dummp_cpu way to working, I can see you changes makes sense here. I couldn't understand much from Philippe's suggestion. Do we want to handle the case for thread waiting on sigwait, inside cpu_remove_sync ? Regards. ~Shivang.