From patchwork Thu Jul 30 15:14:14 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steven Sistare X-Patchwork-Id: 277251 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, UNPARSEABLE_RELAY, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B03F0C433DF for ; Thu, 30 Jul 2020 15:42:45 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 76E662082E for ; Thu, 30 Jul 2020 15:42:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="QW1mNHZL" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 76E662082E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=oracle.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:40148 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k1Ahg-0004IC-Nd for qemu-devel@archiver.kernel.org; Thu, 30 Jul 2020 11:42:44 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:53822) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k1AdD-00077X-4t for qemu-devel@nongnu.org; Thu, 30 Jul 2020 11:38:07 -0400 Received: from userp2120.oracle.com ([156.151.31.85]:46092) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k1AdB-00026T-9R for qemu-devel@nongnu.org; Thu, 30 Jul 2020 11:38:06 -0400 Received: from pps.filterd (userp2120.oracle.com [127.0.0.1]) by userp2120.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 06UFXQQp152168; Thu, 30 Jul 2020 15:38:02 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references; s=corp-2020-01-29; bh=b9FFmQWTlGqrcBgCjwNHHJqNdI4vPeyPId0JJEpNZUw=; b=QW1mNHZLrKDI/TyJrxY+XfKmOOCm/o670xc2IK+Uk4v6pGxinNIgtDDfEUu5JbPsVewe u5v1pkp1N5LmEQXSSaGRJKPa2SEoRkUDtMbISHOsufdivMrOZ79nGWzbPcF9DBw1moDO e8589BC9YDDXt9AcsPJcDdhgPCOYcDT87IogVuLQKZts437c6sB2tWEsEclB8rtcxzj6 5icyMQMR9dMGwO3WCSuHEOLd+sIlIBU1NQFQdvJDG65F/CL1KWwLOJS8v3U7+JamxpJQ sZsGzZIPDUv3+ep1lJx78rrK7ivnOg+Uj/+FRfEESvNeOASDyJG6yf+VVfoNab/a6gb8 hg== Received: from userp3020.oracle.com (userp3020.oracle.com [156.151.31.79]) by userp2120.oracle.com with ESMTP id 32hu1jvdy0-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 30 Jul 2020 15:38:02 +0000 Received: from pps.filterd (userp3020.oracle.com [127.0.0.1]) by userp3020.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 06UFYjGo172130; Thu, 30 Jul 2020 15:38:02 GMT Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by userp3020.oracle.com with ESMTP id 32hu5x0w82-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 30 Jul 2020 15:38:02 +0000 Received: from abhmp0001.oracle.com (abhmp0001.oracle.com [141.146.116.7]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id 06UFc04Q020369; Thu, 30 Jul 2020 15:38:00 GMT Received: from ca-dev63.us.oracle.com (/10.211.8.221) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 30 Jul 2020 08:38:00 -0700 From: Steve Sistare To: qemu-devel@nongnu.org Subject: [PATCH V1 10/32] kvmclock: restore paused KVM clock Date: Thu, 30 Jul 2020 08:14:14 -0700 Message-Id: <1596122076-341293-11-git-send-email-steven.sistare@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1596122076-341293-1-git-send-email-steven.sistare@oracle.com> References: <1596122076-341293-1-git-send-email-steven.sistare@oracle.com> X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9698 signatures=668679 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 adultscore=0 phishscore=0 bulkscore=0 malwarescore=0 suspectscore=1 spamscore=0 mlxlogscore=999 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2007300111 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9698 signatures=668679 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 clxscore=1015 mlxlogscore=999 malwarescore=0 impostorscore=0 priorityscore=1501 spamscore=0 phishscore=0 suspectscore=1 bulkscore=0 mlxscore=0 lowpriorityscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2007300111 Received-SPF: pass client-ip=156.151.31.85; envelope-from=steven.sistare@oracle.com; helo=userp2120.oracle.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/07/30 11:38:02 X-ACL-Warn: Detected OS = Linux 3.1-3.10 [fuzzy] X-Spam_score_int: -53 X-Spam_score: -5.4 X-Spam_bar: ----- X-Spam_report: (-5.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Daniel P. Berrange" , "Michael S. Tsirkin" , =?utf-8?q?Alex_Benn=C3=A9e?= , Juan Quintela , "Dr. David Alan Gilbert" , Markus Armbruster , Alex Williamson , Steve Sistare , Stefan Hajnoczi , =?utf-8?q?Marc-Andr=C3=A9_Lureau?= , Paolo Bonzini , =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?b?w6k=?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" If the VM is paused when the KVM clock is serialized to a file, record that the clock is valid, so the value will be reused rather than overwritten after cprload with a new call to KVM_GET_CLOCK here: kvmclock_vm_state_change() if (running) ... else if (s->clock_valid) return; <-- instead, return here kvm_update_clock() kvm_vm_ioctl(kvm_state, KVM_GET_CLOCK, &data) <-- overwritten Signed-off-by: Steve Sistare --- hw/i386/kvm/clock.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/hw/i386/kvm/clock.c b/hw/i386/kvm/clock.c index 6428335..161991a 100644 --- a/hw/i386/kvm/clock.c +++ b/hw/i386/kvm/clock.c @@ -285,18 +285,22 @@ static int kvmclock_pre_save(void *opaque) if (!s->runstate_paused) { kvm_update_clock(s); } + if (!runstate_is_running()) { + s->clock_valid = true; + } return 0; } static const VMStateDescription kvmclock_vmsd = { .name = "kvmclock", - .version_id = 1, + .version_id = 2, .minimum_version_id = 1, .pre_load = kvmclock_pre_load, .pre_save = kvmclock_pre_save, .fields = (VMStateField[]) { VMSTATE_UINT64(clock, KVMClockState), + VMSTATE_BOOL_V(clock_valid, KVMClockState, 2), VMSTATE_END_OF_LIST() }, .subsections = (const VMStateDescription * []) {