From nobody Mon Feb 9 17:06:25 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=1597633944; cv=none; d=zohomail.com; s=zohoarc; b=Cdb0WKHFvGtlUF4718qzeVBSb2OJMN+3xotmg+2hwkze1wtyjDzIiqo0Q+GL8rGMEYfVM9WltYHegqz1nEY9hlpD3qqfofvDhl+9q8y7rlRs6vQzJwxhXmNRv+0JWjnLZhlaBwLp6Wk3tPl9cltbMV774hbeEyTcDuLw4TQd0TQ= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1597633944; 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=Eds85pmKDsMrXPirQlSqAvTDZWTi5hecHZOJY4ir9Fo=; b=Qb5YecdFCyvJZm/ZRxEuQFt9kbCsOHu2TQ0x964pJQJdwfbVWPtdruphfyhFtADABhv1t/tSJeE0k+GapYKJdATzoHCKb3pxB4OLSnSA60sWB3dNJjf1DXioc0WKlyLAxHvIfcPz5EDg/R6XRB0XbykOmkoA7xBBE+gFBqvD5LI= 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 159763394488610.393563206517115; Sun, 16 Aug 2020 20:12:24 -0700 (PDT) Received: from localhost ([::1]:43592 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k7VZP-0004cE-Nk for importer@patchew.org; Sun, 16 Aug 2020 23:12:23 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:37226) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k7VWB-0006DS-L9 for qemu-devel@nongnu.org; Sun, 16 Aug 2020 23:09:03 -0400 Received: from szxga05-in.huawei.com ([45.249.212.191]:4256 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 1k7VW8-0008M0-LR for qemu-devel@nongnu.org; Sun, 16 Aug 2020 23:09:03 -0400 Received: from DGGEMS404-HUB.china.huawei.com (unknown [172.30.72.59]) by Forcepoint Email with ESMTP id DD027E72928D3028BC1E; Mon, 17 Aug 2020 11:08:53 +0800 (CST) Received: from huawei.com (10.175.101.6) by DGGEMS404-HUB.china.huawei.com (10.3.19.204) with Microsoft SMTP Server id 14.3.487.0; Mon, 17 Aug 2020 11:08:45 +0800 From: Chuan Zheng To: , , Subject: [PATCH v3 06/10] migration/dirtyrate: Compare page hash results for recorded sampled page Date: Mon, 17 Aug 2020 11:20:29 +0800 Message-ID: <1597634433-18809-7-git-send-email-zhengchuan@huawei.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1597634433-18809-1-git-send-email-zhengchuan@huawei.com> References: <1597634433-18809-1-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=45.249.212.191; envelope-from=zhengchuan@huawei.com; helo=huawei.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/08/16 23:08:53 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" Compare page hash results for recorded sampled page. Signed-off-by: Chuan Zheng Signed-off-by: YanYing Zhuang --- migration/dirtyrate.c | 76 +++++++++++++++++++++++++++++++++++++++++++++++= ++++ 1 file changed, 76 insertions(+) diff --git a/migration/dirtyrate.c b/migration/dirtyrate.c index 62b6f69..3ce25f5 100644 --- a/migration/dirtyrate.c +++ b/migration/dirtyrate.c @@ -215,6 +215,82 @@ static int record_ramblock_hash_info(struct RamblockDi= rtyInfo **block_dinfo, return 0; } =20 +static int calc_page_dirty_rate(struct RamblockDirtyInfo *info) +{ + uint8_t *md =3D NULL; + int i; + int ret =3D 0; + + md =3D g_try_new0(uint8_t, qcrypto_hash_len); + if (!md) { + return -1; + } + + for (i =3D 0; i < info->sample_pages_count; i++) { + ret =3D get_ramblock_vfn_hash(info, info->sample_page_vfn[i], &md); + if (ret < 0) { + goto out; + } + + if (memcmp(md, info->hash_result + i * qcrypto_hash_len, + qcrypto_hash_len) !=3D 0) { + info->sample_dirty_count++; + } + } + +out: + g_free(md); + return ret; +} + +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) >> 12)) { + 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 (!dirty_stat.total_sample_count) { + return -1; + } + + return 0; +} + static void calculate_dirtyrate(struct DirtyRateConfig config) { /* todo */ --=20 1.8.3.1