From nobody Wed Nov 5 09:53:50 2025 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.zohomail.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 1499704680822263.5783125363505; Mon, 10 Jul 2017 09:38:00 -0700 (PDT) Received: from localhost ([::1]:41954 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dUbh8-0006IW-GY for importer@patchew.org; Mon, 10 Jul 2017 12:37:58 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:47119) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dUba6-0000fS-30 for qemu-devel@nongnu.org; Mon, 10 Jul 2017 12:30:44 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dUba2-0001OG-Ug for qemu-devel@nongnu.org; Mon, 10 Jul 2017 12:30:41 -0400 Received: from mailhub.sw.ru ([195.214.232.25]:45839 helo=relay.sw.ru) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dUba2-0001Ln-H7; Mon, 10 Jul 2017 12:30:38 -0400 Received: from kvm.sw.ru (msk-vpn.virtuozzo.com [195.214.232.6]) by relay.sw.ru (8.13.4/8.13.4) with ESMTP id v6AGUTIm031112; Mon, 10 Jul 2017 19:30:32 +0300 (MSK) From: Vladimir Sementsov-Ogievskiy To: qemu-block@nongnu.org, qemu-devel@nongnu.org Date: Mon, 10 Jul 2017 19:30:23 +0300 Message-Id: <20170710163029.129912-11-vsementsov@virtuozzo.com> X-Mailer: git-send-email 2.11.1 In-Reply-To: <20170710163029.129912-1-vsementsov@virtuozzo.com> References: <20170710163029.129912-1-vsementsov@virtuozzo.com> X-detected-operating-system: by eggs.gnu.org: OpenBSD 3.x [fuzzy] X-Received-From: 195.214.232.25 Subject: [Qemu-devel] [PATCH v7 10/16] migration: add is_active_iterate handler 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: kwolf@redhat.com, peter.maydell@linaro.org, vsementsov@virtuozzo.com, famz@redhat.com, lirans@il.ibm.com, quintela@redhat.com, jsnow@redhat.com, armbru@redhat.com, mreitz@redhat.com, stefanha@redhat.com, den@openvz.org, amit.shah@redhat.com, pbonzini@redhat.com, dgilbert@redhat.com 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" Only-postcopy savevm states (dirty-bitmap) don't need live iteration, so to disable them and stop transporting empty sections there is a new savevm handler. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Juan Quintela --- include/migration/register.h | 1 + migration/savevm.c | 5 +++++ 2 files changed, 6 insertions(+) diff --git a/include/migration/register.h b/include/migration/register.h index ebf68992dd..3655341544 100644 --- a/include/migration/register.h +++ b/include/migration/register.h @@ -25,6 +25,7 @@ typedef struct SaveVMHandlers { /* This runs both outside and inside the iothread lock. */ bool (*is_active)(void *opaque); bool (*has_postcopy)(void *opaque); + bool (*is_active_iterate)(void *opaque); =20 /* This runs outside the iothread lock in the migration case, and * within the lock in the savevm case. The callback had better only diff --git a/migration/savevm.c b/migration/savevm.c index 0ab036489a..f03ee02f67 100644 --- a/migration/savevm.c +++ b/migration/savevm.c @@ -1024,6 +1024,11 @@ int qemu_savevm_state_iterate(QEMUFile *f, bool post= copy) continue; } } + if (se->ops && se->ops->is_active_iterate) { + if (!se->ops->is_active_iterate(se->opaque)) { + continue; + } + } /* * In the postcopy phase, any device that doesn't know how to * do postcopy should have saved it's state in the _complete --=20 2.11.1