From patchwork Sat Oct 17 04:25:43 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zheng Chuan X-Patchwork-Id: 302690 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A5BFFC433DF for ; Sat, 17 Oct 2020 04:18:56 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1FA8E20791 for ; Sat, 17 Oct 2020 04:18:56 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1FA8E20791 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:52960 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kTdgF-0008QR-5i for qemu-devel@archiver.kernel.org; Sat, 17 Oct 2020 00:18:55 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:40018) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kTdXr-0006Db-LD for qemu-devel@nongnu.org; Sat, 17 Oct 2020 00:10:15 -0400 Received: from szxga05-in.huawei.com ([45.249.212.191]:5243 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 1kTdXp-0007Hx-JL for qemu-devel@nongnu.org; Sat, 17 Oct 2020 00:10:15 -0400 Received: from DGGEMS414-HUB.china.huawei.com (unknown [172.30.72.59]) by Forcepoint Email with ESMTP id 7B2445C3648B4EC72B5E; Sat, 17 Oct 2020 12:09:56 +0800 (CST) Received: from huawei.com (10.175.101.6) by DGGEMS414-HUB.china.huawei.com (10.3.19.214) with Microsoft SMTP Server id 14.3.487.0; Sat, 17 Oct 2020 12:09:48 +0800 From: Chuan Zheng To: , Subject: [PATCH v3 13/18] migration/rdma: Add the function for dynamic page registration Date: Sat, 17 Oct 2020 12:25:43 +0800 Message-ID: <1602908748-43335-14-git-send-email-zhengchuan@huawei.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1602908748-43335-1-git-send-email-zhengchuan@huawei.com> References: <1602908748-43335-1-git-send-email-zhengchuan@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.101.6] X-CFilter-Loop: Reflected Received-SPF: pass client-ip=45.249.212.191; envelope-from=zhengchuan@huawei.com; helo=huawei.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/17 00:09:47 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: yubihong@huawei.com, zhang.zhanghailiang@huawei.com, fengzhimin1@huawei.com, qemu-devel@nongnu.org, xiexiangyou@huawei.com, alex.chen@huawei.com, wanghao232@huawei.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Add the 'qemu_rdma_registration' function, multifd send threads call it to register memory. Signed-off-by: Zhimin Feng Signed-off-by: Chuan Zheng --- migration/rdma.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) diff --git a/migration/rdma.c b/migration/rdma.c index 1af81f5..a366849 100644 --- a/migration/rdma.c +++ b/migration/rdma.c @@ -3738,6 +3738,57 @@ out: return ret; } +/* + * Dynamic page registrations for multifd RDMA threads. + */ +static int qemu_rdma_registration(void *opaque) +{ + RDMAContext *rdma = opaque; + RDMAControlHeader resp = {.type = RDMA_CONTROL_RAM_BLOCKS_RESULT }; + RDMALocalBlocks *local = &rdma->local_ram_blocks; + int reg_result_idx, i, nb_dest_blocks; + RDMAControlHeader head = { .len = 0, .repeat = 1 }; + int ret = 0; + + head.type = RDMA_CONTROL_RAM_BLOCKS_REQUEST; + + ret = qemu_rdma_exchange_send(rdma, &head, NULL, &resp, + ®_result_idx, rdma->pin_all ? + qemu_rdma_reg_whole_ram_blocks : NULL); + if (ret < 0) { + goto out; + } + + nb_dest_blocks = resp.len / sizeof(RDMADestBlock); + + if (local->nb_blocks != nb_dest_blocks) { + rdma->error_state = -EINVAL; + ret = -1; + goto out; + } + + qemu_rdma_move_header(rdma, reg_result_idx, &resp); + memcpy(rdma->dest_blocks, + rdma->wr_data[reg_result_idx].control_curr, resp.len); + + for (i = 0; i < nb_dest_blocks; i++) { + network_to_dest_block(&rdma->dest_blocks[i]); + + /* We require that the blocks are in the same order */ + if (rdma->dest_blocks[i].length != local->block[i].length) { + rdma->error_state = -EINVAL; + ret = -1; + goto out; + } + local->block[i].remote_host_addr = + rdma->dest_blocks[i].remote_host_addr; + local->block[i].remote_rkey = rdma->dest_blocks[i].remote_rkey; + } + +out: + return ret; +} + /* Destination: * Called via a ram_control_load_hook during the initial RAM load section which * lists the RAMBlocks by name. This lets us know the order of the RAMBlocks