From nobody Mon Feb 9 12:11:19 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1769545148; cv=none; d=zohomail.com; s=zohoarc; b=R/tya2j2x+pu6g3EU73tqQ+76dHSZzbmqmgpyzjvHBJJM2rSuIYCtBheeNmllw6KCdqTLLGBvtymAm4R29KH6Ok3rKo99tz/uD7TlOwYebIk3Fi4o6+gPIzfIp2g5/U6AJf7lnY+APomznq+bCbbmBk3shr41icdZbVqzppNrto= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1769545148; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=m3Wr9FXo2ADdCPC8OmHKgSeLJ8csabYNsGOVG/Arjkk=; b=gJS0pZdj7+NmfsZqDQUZTu4kd0ZIl2RY7YWrQMYNuhqNMGpQEkkv4BpQh0Ihy+qPiDFx7CksDzle+ZmSvkhelW8NJww9AwbfZZ3lsLV+bCo4R/QJQ8fxff8sHTWFnncNivQMQ5ghF0c9pxj/fYygw8qeqnbR4J284MWPOF1S1yI= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1769545143204325.94907930299723; Tue, 27 Jan 2026 12:19:03 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vkpWO-0007He-VE; Tue, 27 Jan 2026 15:18:45 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vkpWN-0007GW-Lg for qemu-devel@nongnu.org; Tue, 27 Jan 2026 15:18:43 -0500 Received: from forwardcorp1d.mail.yandex.net ([2a02:6b8:c41:1300:1:45:d181:df01]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vkpWK-0003jD-UE for qemu-devel@nongnu.org; Tue, 27 Jan 2026 15:18:43 -0500 Received: from mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net [IPv6:2a02:6b8:c42:94a9:0:640:a3fa:0]) by forwardcorp1d.mail.yandex.net (Yandex) with ESMTPS id 8F783807AC; Tue, 27 Jan 2026 23:18:34 +0300 (MSK) Received: from vsementsov-lin (unknown [2a02:6bf:8080:38::1:1c]) by mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id XIol8x4AlOs0-NOfEYQ0w; Tue, 27 Jan 2026 23:18:34 +0300 Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1769545114; bh=m3Wr9FXo2ADdCPC8OmHKgSeLJ8csabYNsGOVG/Arjkk=; h=Message-ID:Date:Cc:Subject:To:From; b=tZ7P24drlqPQJ5E/cCEWBjHVhsPAA7k2bdv8DxwVpkxsRIzGR2K8SY7z/AiAASTro cNLuOHhjZVmfCPaEauyeFheUMboB3pBddzr4NfRJq4EmmBw405VUaM95O6E5AZfJhu RfBS6KEg5d/DKb7NfNOn1F2rcByexVNDAKdqca6g= Authentication-Results: mail-nwsmtp-smtp-corp-main-68.klg.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: mst@redhat.com Cc: marcel.apfelbaum@gmail.com, pbonzini@redhat.com, richard.henderson@linaro.org, eduardo@habkost.net, qemu-devel@nongnu.org, yc-core@yandex-team.ru, d-tatianin@yandex-team.ru, Vladimir Sementsov-Ogievskiy Subject: [PATCH] kvm: skip tsc synchronization on shutdown Date: Tue, 27 Jan 2026 23:18:31 +0300 Message-ID: <20260127201831.179237-1-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.52.0 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a02:6b8:c41:1300:1:45:d181:df01; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1d.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, 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 List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1769545153006158500 Content-Type: text/plain; charset="utf-8" That doesn't make real sense, but may take much time when there are a lot of vCPUs. Let's just skip it. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- hw/i386/kvm/clock.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/hw/i386/kvm/clock.c b/hw/i386/kvm/clock.c index aba6842a22..46efdbed14 100644 --- a/hw/i386/kvm/clock.c +++ b/hw/i386/kvm/clock.c @@ -207,7 +207,9 @@ static void kvmclock_vm_state_change(void *opaque, bool= running, =20 s->runstate_paused =3D runstate_check(RUN_STATE_PAUSED); =20 - kvm_synchronize_all_tsc(); + if (!runstate_check(RUN_STATE_SHUTDOWN)) { + kvm_synchronize_all_tsc(); + } =20 kvm_update_clock(s); /* --=20 2.52.0