From nobody Thu May 15 08:31:46 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of redhat.com designates 209.132.183.28 as permitted sender) client-ip=209.132.183.28; envelope-from=libvir-list-bounces@redhat.com; helo=mx1.redhat.com; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of redhat.com designates 209.132.183.28 as permitted sender) smtp.mailfrom=libvir-list-bounces@redhat.com Return-Path: Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by mx.zohomail.com with SMTPS id 1522853161197452.2244198489933; Wed, 4 Apr 2018 07:46:01 -0700 (PDT) Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id A0D2DA458E; Wed, 4 Apr 2018 14:45:59 +0000 (UTC) Received: from colo-mx.corp.redhat.com (colo-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.20]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 6F0877F368; Wed, 4 Apr 2018 14:45:59 +0000 (UTC) Received: from lists01.pubmisc.prod.ext.phx2.redhat.com (lists01.pubmisc.prod.ext.phx2.redhat.com [10.5.19.33]) by colo-mx.corp.redhat.com (Postfix) with ESMTP id 308C3181D0A2; Wed, 4 Apr 2018 14:45:59 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id w34Ejw9S022079 for ; Wed, 4 Apr 2018 10:45:58 -0400 Received: by smtp.corp.redhat.com (Postfix) id 033397F366; Wed, 4 Apr 2018 14:45:58 +0000 (UTC) Received: from mx1.redhat.com (ext-mx08.extmail.prod.ext.phx2.redhat.com [10.5.110.32]) by smtp.corp.redhat.com (Postfix) with ESMTPS id E9ACD7F365 for ; Wed, 4 Apr 2018 14:45:24 +0000 (UTC) Received: from mx0a-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 mx1.redhat.com (Postfix) with ESMTPS id 6DC5EC058EB3 for ; Wed, 4 Apr 2018 14:45:19 +0000 (UTC) Received: from pps.filterd (m0098420.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w34EdxuU046364 for ; Wed, 4 Apr 2018 10:45:18 -0400 Received: from e06smtp13.uk.ibm.com (e06smtp13.uk.ibm.com [195.75.94.109]) by mx0b-001b2d01.pphosted.com with ESMTP id 2h50g3rug0-1 (version=TLSv1.2 cipher=AES256-SHA256 bits=256 verify=NOT) for ; Wed, 04 Apr 2018 10:45:17 -0400 Received: from localhost by e06smtp13.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Wed, 4 Apr 2018 15:45:15 +0100 Received: from d06av21.portsmouth.uk.ibm.com (d06av21.portsmouth.uk.ibm.com [9.149.105.232]) by b06cxnps4075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w34EjEA633358048; Wed, 4 Apr 2018 14:45:14 GMT Received: from d06av21.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 23B2252045; Wed, 4 Apr 2018 14:36:22 +0100 (BST) Received: from bradbury.ibm.com (unknown [9.152.222.211]) by d06av21.portsmouth.uk.ibm.com (Postfix) with ESMTP id F40A752043; Wed, 4 Apr 2018 14:36:21 +0100 (BST) From: Viktor Mihajlovski To: libvir-list@redhat.com Date: Wed, 4 Apr 2018 16:45:07 +0200 In-Reply-To: <1522853107-22727-1-git-send-email-mihajlov@linux.vnet.ibm.com> References: <1522853107-22727-1-git-send-email-mihajlov@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 18040414-0012-0000-0000-000005C701E3 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18040414-0013-0000-0000-0000194314C1 Message-Id: <1522853107-22727-7-git-send-email-mihajlov@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2018-04-04_04:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1709140000 definitions=main-1804040148 X-Greylist: Sender passed SPF test, Sender IP whitelisted by DNSRBL, ACL 207 matched, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.32]); Wed, 04 Apr 2018 14:45:19 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.32]); Wed, 04 Apr 2018 14:45:19 +0000 (UTC) for IP:'148.163.158.5' DOMAIN:'mx0b-001b2d01.pphosted.com' HELO:'mx0a-001b2d01.pphosted.com' FROM:'mihajlov@de.ibm.com' RCPT:'' X-RedHat-Spam-Score: -0.701 (RCVD_IN_DNSWL_LOW, SPF_PASS) 148.163.158.5 mx0b-001b2d01.pphosted.com 148.163.158.5 mx0b-001b2d01.pphosted.com X-Scanned-By: MIMEDefang 2.78 on 10.5.110.32 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-loop: libvir-list@redhat.com Cc: pkrempa@redhat.com Subject: [libvirt] [PATCHv3 6/6] qemu: refresh vcpu halted state only via query-cpus-fast X-BeenThere: libvir-list@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: Development discussions about the libvirt library & tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Sender: libvir-list-bounces@redhat.com Errors-To: libvir-list-bounces@redhat.com X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.38]); Wed, 04 Apr 2018 14:46:00 +0000 (UTC) X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Type: text/plain; charset="utf-8" In order to not affect running VMs, refreshing the halted state is only performed if QEMU supports the query-cpus-fast QAPI. Signed-off-by: Viktor Mihajlovski Reviewed-by: Boris Fiuczynski Reviewed-by: Marc Hartmayer --- src/qemu/qemu_domain.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c index 662937b..0331af7 100644 --- a/src/qemu/qemu_domain.c +++ b/src/qemu/qemu_domain.c @@ -9124,8 +9124,13 @@ qemuDomainRefreshVcpuHalted(virQEMUDriverPtr driver, return 0; =20 /* The halted state is interresting only on s390(x). On other platforms - * the data would be stale at the time when it would be used. */ - if (!ARCH_IS_S390(vm->def->os.arch)) + * the data would be stale at the time when it would be used. + * Calling qemuMonitorGetCpuHalted() can adversely affect the running + * VM's performance unless QEMU supports query-cpus-fast. + */ + if (!ARCH_IS_S390(vm->def->os.arch) || + !virQEMUCapsGet(QEMU_DOMAIN_PRIVATE(vm)->qemuCaps, + QEMU_CAPS_QUERY_CPUS_FAST)) return 0; =20 if (qemuDomainObjEnterMonitorAsync(driver, vm, asyncJob) < 0) --=20 1.9.1 -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list