From nobody Fri May 3 02:49:33 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zoho.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1492069988269674.7600602102169; Thu, 13 Apr 2017 00:53:08 -0700 (PDT) Received: from localhost ([::1]:47839 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cyZYw-0003a7-2L for importer@patchew.org; Thu, 13 Apr 2017 03:53:06 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:43701) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cyZY2-0003E0-8U for qemu-devel@nongnu.org; Thu, 13 Apr 2017 03:52:11 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cyZXy-0004bq-DI for qemu-devel@nongnu.org; Thu, 13 Apr 2017 03:52:10 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:38649) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1cyZXy-0004ac-4Y for qemu-devel@nongnu.org; Thu, 13 Apr 2017 03:52:06 -0400 Received: from pps.filterd (m0098393.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.20/8.16.0.20) with SMTP id v3D7nUhV052896 for ; Thu, 13 Apr 2017 03:52:02 -0400 Received: from e28smtp09.in.ibm.com (e28smtp09.in.ibm.com [125.16.236.9]) by mx0a-001b2d01.pphosted.com with ESMTP id 29t0e0a5c9-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Thu, 13 Apr 2017 03:52:02 -0400 Received: from localhost by e28smtp09.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 13 Apr 2017 13:21:59 +0530 Received: from d28relay06.in.ibm.com (9.184.220.150) by e28smtp09.in.ibm.com (192.168.1.139) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Thu, 13 Apr 2017 13:21:57 +0530 Received: from d28av04.in.ibm.com (d28av04.in.ibm.com [9.184.220.66]) by d28relay06.in.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id v3D7pvnQ17170536; Thu, 13 Apr 2017 13:21:57 +0530 Received: from d28av04.in.ibm.com (localhost [127.0.0.1]) by d28av04.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id v3D7pu4X017134; Thu, 13 Apr 2017 13:21:56 +0530 Received: from bharata.in.ibm.com ([9.124.35.122]) by d28av04.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id v3D7pu2V017128; Thu, 13 Apr 2017 13:21:56 +0530 From: Bharata B Rao To: qemu-devel@nongnu.org Date: Thu, 13 Apr 2017 13:21:46 +0530 X-Mailer: git-send-email 2.7.4 X-TM-AS-MML: disable x-cbid: 17041307-0032-0000-0000-0000020EDD8E X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17041307-0033-0000-0000-000012446CCE Message-Id: <1492069906-11300-1-git-send-email-bharata@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-04-13_07:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=1 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1702020001 definitions=main-1704130065 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.156.1 Subject: [Qemu-devel] [PATCH] cpus: Fix CPU unplug for MTTCG X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: nikunj@linux.vnet.ibm.com, qemu-ppc@nongnu.org, Bharata B Rao , pbonzini@redhat.com, alex.bennee@linaro.org, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Ensure that the unplugged CPU thread is destroyed and the waiting thread is notified about it. This is needed for CPU unplug to work correctly in MTTCG mode. Signed-off-by: Bharata B Rao --- cpus.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/cpus.c b/cpus.c index 740b8dc..79f780b 100644 --- a/cpus.c +++ b/cpus.c @@ -1483,6 +1483,12 @@ static void *qemu_tcg_cpu_thread_fn(void *arg) /* Ignore everything else? */ break; } + } else if (cpu->unplug) { + qemu_tcg_destroy_vcpu(cpu); + cpu->created =3D false; + qemu_cond_signal(&qemu_cpu_cond); + qemu_mutex_unlock_iothread(); + return NULL; } =20 atomic_mb_set(&cpu->exit_request, 0); --=20 2.7.4