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[35.229.225.197]) by smtp.gmail.com with ESMTPSA id 10-v6sm45841595pgb.40.2018.06.02.22.06.59 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 02 Jun 2018 22:07:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=FIEdOS4Qpk/MgP0vNCirmcAoGj2mB4cFvrpVJXmUrvY=; b=kGERQzHX+8DtAXscdefDY9H9ZdbyS166WXpkEZ9I9m+r6nH9kjxuy2Ry1S/pvYVJff LXjeXqjL+WYoAWk6Ydc/zdJuA52IGYPfDKNUNmT5YrosmpTmK9t2lt3BjcGTC0m9TbFu oJQtVoJcBz+acVjSiOT1hdTuHrUdUq5UMyS39oemhqM0hNMaQR0NkHYcO29bblIVkIIo 6vLdnGa8F+l/j9ZStxQdkdspOCnz61IFWd6u8zkMOyx/PjVzW/m80qMwMCTECZAMjjYu NE1Sr1oirdUPD6teekSqawQ06JC3IMxAkWh4sBUvseQlfF1M0NWFgYvrmeg8jdueXiLG DTMg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=FIEdOS4Qpk/MgP0vNCirmcAoGj2mB4cFvrpVJXmUrvY=; b=WcTnxuvFhGimLGL2OVlZTW2Eg3QuDTti3gUyWlnBnGiXmqdE6AlGK/YjBLDtMDHbxO UeESwAJ05s4H68c+Y5+aArh9Y7Zaoe39H7lTApIiSGtlLZIipix85aSbx3C1FOuMAsag P3/4FIdUY+I30EOx7pedF4KzIOyYOOsX7ggb8rgVdC9Mp2soNhSSGKWtAUzLPfsP3Jep 1m7PEPZq4XKTHPjp3JOGQoXQiUmd8k96OehVDCAMSiq69bnj8w2eoq1ySGNvf5hIrfHv AnjXNxCL/hFRwnRHQjArUOZVDXpUy1pGWKivDmSfxFLOFFR4XxfN5WfU7RM+3sFn2dNw IW+w== X-Gm-Message-State: ALKqPwfCgrhsAZweSkcC/XwPs6zPKNmFcYGTCq6EHBWrVTRQZ2qTh9cP NTZsIIDgci4sdBjhCGnaT+PunA== X-Google-Smtp-Source: ADUXVKJy+mK/8DTnIC6yNisfrdwxyOR2RUnvWO03p355lBIcZtnaNppD5XAF3oxpMxA1PpocFgt5xg== X-Received: by 2002:a63:7b07:: with SMTP id w7-v6mr12958521pgc.199.1528002424705; Sat, 02 Jun 2018 22:07:04 -0700 (PDT) From: Zhang Chen To: qemu-devel@nongnu.org, Paolo Bonzini , Juan Quintela , "Dr . David Alan Gilbert" , Jason Wang , Eric Blake , Markus Armbruster Date: Sun, 3 Jun 2018 13:05:42 +0800 Message-Id: <20180603050546.6827-14-zhangckid@gmail.com> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180603050546.6827-1-zhangckid@gmail.com> References: <20180603050546.6827-1-zhangckid@gmail.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:400e:c05::242 Subject: [Qemu-devel] [PATCH V8 13/17] 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 , Li Zhijian , Zhang Chen Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZohoMail: RDKM_2 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: zhanghailiang Reviewed-by: Dr. David Alan Gilbert --- migration/ram.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/migration/ram.c b/migration/ram.c index 927436bd12..e34a015785 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -3087,6 +3087,7 @@ 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 @@ -3107,10 +3108,12 @@ void colo_release_ram_cache(void) { RAMBlock *block; =20 + memory_global_dirty_log_stop(); QLIST_FOREACH_RCU(block, &ram_list.blocks, next) { g_free(block->bmap); block->bmap =3D NULL; } + rcu_read_lock(); QLIST_FOREACH_RCU(block, &ram_list.blocks, next) { if (block->colo_cache) { @@ -3343,6 +3346,13 @@ 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(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 2.17.GIT