From nobody Tue Feb 10 05:39:41 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1598319278; cv=none; d=zohomail.com; s=zohoarc; b=aNL1w1MwgGeHkxAvakOIE+QN6sruaj4E33R6y/Yzv+aOzcjOJEnECjSQ3TAi8uLxVdVhLW00yaL3oyh96ubL/UTLMcXigB6p7nxuncQ1D+mCSsl2YdX9q9xWm3cz0VtBOLozmZrNLUqnj5aDH0sFnXej2xFXnwtUOMsbMaogQ5k= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1598319278; h=Content-Type:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=OnW0u0fz114+fzRsMLaSO0jVaWdU2tqs5veV4wasIeU=; b=HjCY2MuX0P2I2Dq4OzYGoRfa8A0lWigCdPBLNKO136rOqULdANdMNN3lYynOHwvmDn7Ty8yfyBWoWpO/k5tnuIfc1xvJq0ZOcf4G5Wb2DSnn2TevfBYlUsE6eq2huSUyuie+TyHzXzA8jyI5f6kRM3zR/n3eGnJJ5TZi5s3KPoQ= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1598319278793658.0126134707659; Mon, 24 Aug 2020 18:34:38 -0700 (PDT) Received: from localhost ([::1]:38872 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kANrB-0004WQ-KS for importer@patchew.org; Mon, 24 Aug 2020 21:34:37 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:60810) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kANo3-0005QC-DF for qemu-devel@nongnu.org; Mon, 24 Aug 2020 21:31:23 -0400 Received: from szxga04-in.huawei.com ([45.249.212.190]:4653 helo=huawei.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kANo1-0005rj-FV for qemu-devel@nongnu.org; Mon, 24 Aug 2020 21:31:23 -0400 Received: from DGGEMS405-HUB.china.huawei.com (unknown [172.30.72.59]) by Forcepoint Email with ESMTP id 507669C88A0AA1CAB2F1; Tue, 25 Aug 2020 09:31:02 +0800 (CST) Received: from huawei.com (10.175.101.6) by DGGEMS405-HUB.china.huawei.com (10.3.19.205) with Microsoft SMTP Server id 14.3.487.0; Tue, 25 Aug 2020 09:30:52 +0800 From: Chuan Zheng To: , , , Subject: [PATCH v5 07/12] migration/dirtyrate: Compare page hash results for recorded sampled page Date: Tue, 25 Aug 2020 09:40:45 +0800 Message-ID: <1598319650-36762-8-git-send-email-zhengchuan@huawei.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1598319650-36762-1-git-send-email-zhengchuan@huawei.com> References: <1598319650-36762-1-git-send-email-zhengchuan@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.101.6] X-CFilter-Loop: Reflected Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=45.249.212.190; envelope-from=zhengchuan@huawei.com; helo=huawei.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/08/24 21:30:58 X-ACL-Warn: Detected OS = Linux 3.11 and newer [fuzzy] X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: zhang.zhanghailiang@huawei.com, qemu-devel@nongnu.org, xiexiangyou@huawei.com, alex.chen@huawei.com, ann.zhuangyanying@huawei.com, fangying1@huawei.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Compare page hash results for recorded sampled page. Signed-off-by: Chuan Zheng Signed-off-by: YanYing Zhuang --- migration/dirtyrate.c | 64 +++++++++++++++++++++++++++++++++++++++++++++++= ++++ 1 file changed, 64 insertions(+) diff --git a/migration/dirtyrate.c b/migration/dirtyrate.c index 66de426..050270d 100644 --- a/migration/dirtyrate.c +++ b/migration/dirtyrate.c @@ -202,6 +202,70 @@ static int record_ramblock_hash_info(struct RamblockDi= rtyInfo **block_dinfo, return 0; } =20 +static int calc_page_dirty_rate(struct RamblockDirtyInfo *info) +{ + uint32_t crc; + int i; + + for (i =3D 0; i < info->sample_pages_count; i++) { + crc =3D get_ramblock_vfn_hash(info, info->sample_page_vfn[i]); + if (crc !=3D info->hash_result[i]) { + info->sample_dirty_count++; + } + } + + return 0; +} + +static bool find_page_matched(RAMBlock *block, struct RamblockDirtyInfo *i= nfos, + int count, struct RamblockDirtyInfo **matche= d) +{ + int i; + + for (i =3D 0; i < count; i++) { + if (!strcmp(infos[i].idstr, qemu_ram_get_idstr(block))) { + break; + } + } + + if (i =3D=3D count) { + return false; + } + + if (infos[i].ramblock_addr !=3D qemu_ram_get_host_addr(block) || + infos[i].ramblock_pages !=3D + (qemu_ram_get_used_length(block) >> DIRTYRATE_PAGE_SHIFT_KB)) { + return false; + } + + *matched =3D &infos[i]; + return true; +} + +static int compare_page_hash_info(struct RamblockDirtyInfo *info, + int block_index) +{ + struct RamblockDirtyInfo *block_dinfo =3D NULL; + RAMBlock *block =3D NULL; + + RAMBLOCK_FOREACH_MIGRATABLE(block) { + block_dinfo =3D NULL; + if (!find_page_matched(block, info, block_index + 1, &block_dinfo)= ) { + continue; + } + if (calc_page_dirty_rate(block_dinfo) < 0) { + return -1; + } + update_dirtyrate_stat(block_dinfo); + } + + if (!DirtyStat.total_sample_count) { + return -1; + } + + return 0; +} + static void calculate_dirtyrate(struct DirtyRateConfig config) { /* todo */ --=20 1.8.3.1