From nobody Thu Nov 6 20:31:53 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.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 1487735646341664.1086026924372; Tue, 21 Feb 2017 19:54:06 -0800 (PST) Received: from localhost ([::1]:49691 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cgO0D-000668-2p for importer@patchew.org; Tue, 21 Feb 2017 22:54:05 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:42636) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cgNpR-0004j4-03 for qemu-devel@nongnu.org; Tue, 21 Feb 2017 22:42:57 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cgNpM-0002ve-OR for qemu-devel@nongnu.org; Tue, 21 Feb 2017 22:42:57 -0500 Received: from [45.249.212.188] (port=2933 helo=dggrg02-dlp.huawei.com) by eggs.gnu.org with esmtps (TLS1.0:RSA_ARCFOUR_SHA1:16) (Exim 4.71) (envelope-from ) id 1cgNpM-0002rt-53 for qemu-devel@nongnu.org; Tue, 21 Feb 2017 22:42:52 -0500 Received: from 172.30.72.55 (EHLO DGGEMM402-HUB.china.huawei.com) ([172.30.72.55]) by dggrg02-dlp.huawei.com (MOS 4.4.6-GA FastPath queued) with ESMTP id AIU51193; Wed, 22 Feb 2017 11:42:46 +0800 (CST) Received: from DGGEML401-HUB.china.huawei.com (10.3.17.32) by DGGEMM402-HUB.china.huawei.com (10.3.20.210) with Microsoft SMTP Server (TLS) id 14.3.301.0; Wed, 22 Feb 2017 11:42:45 +0800 Received: from localhost (10.177.24.212) by DGGEML401-HUB.china.huawei.com (10.3.17.32) with Microsoft SMTP Server id 14.3.301.0; Wed, 22 Feb 2017 11:42:36 +0800 From: zhanghailiang To: , , Date: Wed, 22 Feb 2017 11:42:16 +0800 Message-ID: <1487734936-43472-16-git-send-email-zhang.zhanghailiang@huawei.com> X-Mailer: git-send-email 2.7.2.windows.1 In-Reply-To: <1487734936-43472-1-git-send-email-zhang.zhanghailiang@huawei.com> References: <1487734936-43472-1-git-send-email-zhang.zhanghailiang@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.177.24.212] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020205.58AD08B7.0138, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2014-11-16 11:51:01, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 8e973c2ff52813e6ecc4df6b60cacc96 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.4.x-2.6.x [generic] [fuzzy] X-Received-From: 45.249.212.188 Subject: [Qemu-devel] [PATCH 15/15] COLO: flush host dirty ram from cache 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: xiecl.fnst@cn.fujitsu.com, zhanghailiang , lizhijian@cn.fujitsu.com, Juan Quintela 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 Content-Type: text/plain; charset="utf-8" Don't need to flush all VM's ram from cache, only flush the dirty pages since last checkpoint Cc: Juan Quintela Signed-off-by: Li Zhijian Signed-off-by: Zhang Chen Signed-off-by: zhanghailiang --- migration/ram.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/migration/ram.c b/migration/ram.c index 6227b94..e9ba740 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -2702,6 +2702,7 @@ int colo_init_ram_cache(void) migration_bitmap_rcu =3D g_new0(struct BitmapRcu, 1); migration_bitmap_rcu->bmap =3D bitmap_new(ram_cache_pages); migration_dirty_pages =3D 0; + memory_global_dirty_log_start(); =20 return 0; =20 @@ -2750,6 +2751,15 @@ void colo_flush_ram_cache(void) void *src_host; ram_addr_t offset =3D 0; =20 + memory_global_dirty_log_sync(); + qemu_mutex_lock(&migration_bitmap_mutex); + rcu_read_lock(); + QLIST_FOREACH_RCU(block, &ram_list.blocks, next) { + migration_bitmap_sync_range(block->offset, block->used_length); + } + rcu_read_unlock(); + qemu_mutex_unlock(&migration_bitmap_mutex); + trace_colo_flush_ram_cache_begin(migration_dirty_pages); rcu_read_lock(); block =3D QLIST_FIRST_RCU(&ram_list.blocks); --=20 1.8.3.1