From nobody Wed Dec 17 21:45:43 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; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1539594237730728.9704789957319; Mon, 15 Oct 2018 02:03:57 -0700 (PDT) Received: from localhost ([::1]:51126 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gByn6-0000VJ-PT for importer@patchew.org; Mon, 15 Oct 2018 05:03:56 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:45542) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gByX9-0004Ke-Ln for qemu-devel@nongnu.org; Mon, 15 Oct 2018 04:47:30 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gByX8-0004Hq-2l for qemu-devel@nongnu.org; Mon, 15 Oct 2018 04:47:27 -0400 Received: from mx1.redhat.com ([209.132.183.28]:38188) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gByX7-000437-IE for qemu-devel@nongnu.org; Mon, 15 Oct 2018 04:47:25 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 65DDD308A957; Mon, 15 Oct 2018 08:47:13 +0000 (UTC) Received: from jason-ThinkPad-T430s.redhat.com (ovpn-12-138.pek2.redhat.com [10.72.12.138]) by smtp.corp.redhat.com (Postfix) with ESMTP id D082E1797A; Mon, 15 Oct 2018 08:47:10 +0000 (UTC) From: Jason Wang To: peter.maydell@linaro.org, qemu-devel@nongnu.org Date: Mon, 15 Oct 2018 16:46:14 +0800 Message-Id: <1539593186-32183-15-git-send-email-jasowang@redhat.com> In-Reply-To: <1539593186-32183-1-git-send-email-jasowang@redhat.com> References: <1539593186-32183-1-git-send-email-jasowang@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.41]); Mon, 15 Oct 2018 08:47:13 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 14/26] 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: Zhang Chen , Jason Wang , zhanghailiang , Li Zhijian , Zhang Chen Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RDMRC_1 RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: zhanghailiang Don't need to flush all VM's ram from cache, only flush the dirty pages since last checkpoint Signed-off-by: Li Zhijian Signed-off-by: Zhang Chen Signed-off-by: Zhang Chen Signed-off-by: zhanghailiang Reviewed-by: Dr. David Alan Gilbert Signed-off-by: Jason Wang --- migration/ram.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/migration/ram.c b/migration/ram.c index 477853d..7e7deec 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -3714,6 +3714,7 @@ int colo_init_ram_cache(void) } ram_state =3D g_new0(RAMState, 1); ram_state->migration_dirty_pages =3D 0; + memory_global_dirty_log_start(); =20 return 0; =20 @@ -3735,6 +3736,7 @@ void colo_release_ram_cache(void) { RAMBlock *block; =20 + memory_global_dirty_log_stop(); RAMBLOCK_FOREACH_MIGRATABLE(block) { g_free(block->bmap); block->bmap =3D NULL; @@ -3985,6 +3987,13 @@ static void colo_flush_ram_cache(void) void *src_host; unsigned long offset =3D 0; =20 + memory_global_dirty_log_sync(); + rcu_read_lock(); + RAMBLOCK_FOREACH_MIGRATABLE(block) { + migration_bitmap_sync_range(ram_state, block, 0, block->used_lengt= h); + } + rcu_read_unlock(); + trace_colo_flush_ram_cache_begin(ram_state->migration_dirty_pages); rcu_read_lock(); block =3D QLIST_FIRST_RCU(&ram_list.blocks); --=20 2.5.0