From nobody Sat Nov 15 17:44:06 2025 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=1595646145; cv=none; d=zohomail.com; s=zohoarc; b=KCIX8TZGkHB8XuhqQk+o5LgtmkeZmAxZXeDyRptNfm4/6GM+nnYDAO2KCPWGz9ztX9jYvNpHqlKJGFZMctzqd9f5gFYlAzKWF2pAmSfrysjEyQFx08CBdtH+j4jBp/alq+7tEAsgpuoNIXdjEgKRw2knkg/CdmijWecfoREp1jM= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1595646145; 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=Yv11wnLAaqc4rzUTBahOJKhdqoyUrE0AFa4FT5PQRwM=; b=btFbv9lvl1ykQrGlEXkPeFebxoDX1de9zqKW89bJiO1OVnlYbG5GjvSr9mVf3uPw2upuH0Ive2H9TH7F+TuEAKITtveKptd6pSVLxU5aGWz3US9wbX36vcPQVDNvcMo0Rt/2HPySF3TRWHQCoCFG0E+g2riWjwCLhpADCqzUEE0= 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 1595646145952633.6036502645085; Fri, 24 Jul 2020 20:02:25 -0700 (PDT) Received: from localhost ([::1]:50216 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jzAS8-0006wT-OO for importer@patchew.org; Fri, 24 Jul 2020 23:02:24 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59646) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jzAPW-00028M-Fq for qemu-devel@nongnu.org; Fri, 24 Jul 2020 22:59:42 -0400 Received: from szxga04-in.huawei.com ([45.249.212.190]:4158 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 1jzAPR-0000l9-3P for qemu-devel@nongnu.org; Fri, 24 Jul 2020 22:59:42 -0400 Received: from DGGEMS408-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 401B5539D792B5385680; Sat, 25 Jul 2020 10:59:33 +0800 (CST) Received: from huawei.com (10.175.101.6) by DGGEMS408-HUB.china.huawei.com (10.3.19.208) with Microsoft SMTP Server id 14.3.487.0; Sat, 25 Jul 2020 10:59:23 +0800 From: Chuan Zheng To: , Subject: [RFC PATCH 5/8] migration/dirtyrate: Compare hash results for recorded ramblock Date: Sat, 25 Jul 2020 11:11:06 +0800 Message-ID: <1595646669-109310-6-git-send-email-zhengchuan@huawei.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1595646669-109310-1-git-send-email-zhengchuan@huawei.com> References: <1595646669-109310-1-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 = 2020/07/24 22:59:33 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=-0.01, RCVD_IN_MSPIKE_WL=-0.01, 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, linyilu@huawei.com, qemu-devel@nongnu.org, 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" From: Zheng Chuan Compare hash results for recorded ramblock. Signed-off-by: Zheng Chuan Signed-off-by: YanYing Zhang --- migration/dirtyrate.c | 77 +++++++++++++++++++++++++++++++++++++++++++++++= ++++ 1 file changed, 77 insertions(+) diff --git a/migration/dirtyrate.c b/migration/dirtyrate.c index 45cfc91..7badc53 100644 --- a/migration/dirtyrate.c +++ b/migration/dirtyrate.c @@ -202,6 +202,83 @@ static int record_block_hash_info(struct dirtyrate_con= fig config, return 0; } =20 +static int cal_block_dirty_rate(struct block_dirty_info *info) +{ + uint8_t *md =3D NULL; + size_t hash_len; + int i; + int ret =3D 0; + + hash_len =3D qcrypto_hash_digest_len(QCRYPTO_HASH_ALG_MD5); + md =3D g_new0(uint8_t, hash_len); + + for (i =3D 0; i < info->sample_pages_count; i++) { + ret =3D get_block_vfn_hash(info, info->sample_page_vfn[i], &md, &h= ash_len); + if (ret < 0) { + goto out; + } + + if (memcmp(md, info->hash_result + i * hash_len, hash_len) !=3D 0)= { + info->sample_dirty_count++; + } + } + +out: + g_free(md); + return ret; +} + +static bool find_block_matched(RAMBlock *block, struct block_dirty_info *i= nfos, + int count, struct block_dirty_info **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].block_addr !=3D qemu_ram_get_host_addr(block) || + infos[i].block_pages !=3D + (qemu_ram_get_used_length(block) >> DIRTYRATE_PAGE_SIZE_SHIFT)= ) { + return false; + } + + *matched =3D &infos[i]; + return true; +} + +static int compare_block_hash_info(struct block_dirty_info *info, int bloc= k_index) +{ + struct block_dirty_info *block_dinfo =3D NULL; + RAMBlock *block =3D NULL; + + RAMBLOCK_FOREACH_MIGRATABLE(block) { + if (ram_block_skip(block) < 0) { + continue; + } + block_dinfo =3D NULL; + if (!find_block_matched(block, info, block_index + 1, &block_dinfo= )) { + continue; + } + if (cal_block_dirty_rate(block_dinfo) < 0) { + return -1; + } + update_dirtyrate_stat(block_dinfo); + } + if (!dirty_stat.total_sample_count) { + return -1; + } + + return 0; +} + + static void calculate_dirtyrate(struct dirtyrate_config config, int64_t ti= me) { /* todo */ --=20 1.8.3.1