From nobody Thu Dec 18 07:51:15 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 1492850127641202.1192218281784; Sat, 22 Apr 2017 01:35:27 -0700 (PDT) Received: from localhost ([::1]:34724 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d1qVn-00088y-M0 for importer@patchew.org; Sat, 22 Apr 2017 04:35:23 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59848) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d1qNW-0001n5-Kq for qemu-devel@nongnu.org; Sat, 22 Apr 2017 04:26:51 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1d1qNT-0000jA-IU for qemu-devel@nongnu.org; Sat, 22 Apr 2017 04:26:50 -0400 Received: from szxga01-in.huawei.com ([45.249.212.187]:3506 helo=dggrg01-dlp.huawei.com) by eggs.gnu.org with esmtps (TLS1.0:RSA_ARCFOUR_SHA1:16) (Exim 4.71) (envelope-from ) id 1d1qNS-0000hz-UA for qemu-devel@nongnu.org; Sat, 22 Apr 2017 04:26:47 -0400 Received: from 172.30.72.57 (EHLO DGGEML403-HUB.china.huawei.com) ([172.30.72.57]) by dggrg01-dlp.huawei.com (MOS 4.4.6-GA FastPath queued) with ESMTP id ANE69258; Sat, 22 Apr 2017 16:26:42 +0800 (CST) Received: from localhost (10.177.24.212) by DGGEML403-HUB.china.huawei.com (10.3.17.33) with Microsoft SMTP Server id 14.3.301.0; Sat, 22 Apr 2017 16:26:31 +0800 From: zhanghailiang To: , Date: Sat, 22 Apr 2017 16:25:55 +0800 Message-ID: <1492849558-17540-16-git-send-email-zhang.zhanghailiang@huawei.com> X-Mailer: git-send-email 2.7.2.windows.1 In-Reply-To: <1492849558-17540-1-git-send-email-zhang.zhanghailiang@huawei.com> References: <1492849558-17540-1-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=0001.0A020205.58FB13C2.00BD, 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: 4e8300bc417163a375ef9eda6190ac60 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.4.x-2.6.x [generic] [fuzzy] X-Received-From: 45.249.212.187 Subject: [Qemu-devel] [PATCH v2 15/18] 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: zhanghailiang , xiecl.fnst@cn.fujitsu.com, zhangchen.fnst@cn.fujitsu.com, lizhijian@cn.fujitsu.com, quintela@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 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 --- v2: - stop dirty log after exit from COLO state. (Dave) --- migration/ram.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/migration/ram.c b/migration/ram.c index f171a82..7bf3515 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -2775,6 +2775,7 @@ int colo_init_ram_cache(void) ram_state.ram_bitmap =3D g_new0(RAMBitmap, 1); ram_state.ram_bitmap->bmap =3D bitmap_new(last_ram_page()); ram_state.migration_dirty_pages =3D 0; + memory_global_dirty_log_start(); =20 return 0; =20 @@ -2798,6 +2799,7 @@ void colo_release_ram_cache(void) =20 atomic_rcu_set(&ram_state.ram_bitmap, NULL); if (bitmap) { + memory_global_dirty_log_stop(); call_rcu(bitmap, migration_bitmap_free, rcu); } =20 @@ -2822,6 +2824,16 @@ void colo_flush_ram_cache(void) void *src_host; unsigned long offset =3D 0; =20 + memory_global_dirty_log_sync(); + qemu_mutex_lock(&ram_state.bitmap_mutex); + rcu_read_lock(); + QLIST_FOREACH_RCU(block, &ram_list.blocks, next) { + migration_bitmap_sync_range(&ram_state, block, block->offset, + block->used_length); + } + rcu_read_unlock(); + qemu_mutex_unlock(&ram_state.bitmap_mutex); + trace_colo_flush_ram_cache_begin(ram_state.migration_dirty_pages); rcu_read_lock(); block =3D QLIST_FIRST_RCU(&ram_list.blocks); --=20 1.8.3.1