From patchwork Fri Aug 11 14:50:48 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hawkins Jiawei X-Patchwork-Id: 13350981 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 55BA2C41513 for ; Fri, 11 Aug 2023 14:51:57 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qUTTo-0005sf-Js; Fri, 11 Aug 2023 10:51:08 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qUTTn-0005sV-PC for qemu-devel@nongnu.org; Fri, 11 Aug 2023 10:51:07 -0400 Received: from mail-pf1-x42a.google.com ([2607:f8b0:4864:20::42a]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1qUTTm-00021q-71 for qemu-devel@nongnu.org; Fri, 11 Aug 2023 10:51:07 -0400 Received: by mail-pf1-x42a.google.com with SMTP id d2e1a72fcca58-6873a30d02eso1548435b3a.3 for ; Fri, 11 Aug 2023 07:51:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1691765464; x=1692370264; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=lGGS85EdF+n2tsSxAgTDPy2Jb7EnRjrZDRNYv6vgzSs=; b=bfpd0bnRdHqEW3gk1x0Oxsr5k3IkhTWEPel83jI5H8am9LncZKFHD0N7OFKa9o2fjY YKo0miKMkwllnHtMreE0kiAxY6ktj/JnJIeTkkWBHkpc58Es46T9F+nV/uVRL8fobps8 3pVVkjyPENbF6cB+kAJ4kJxUSC0pxahBqAKpm2lLoPyiUTNbOYle5taNvoRHaFoJCEnA wWy60BWfTJiBHIRqq7XHFKDojOq4dnJvcYUHz/C30i9QCagwO0A90i31Io6LGMiqCxsO HVrtWA8h3U4bc3WLT6IjuOVhXj+86y4G+xqrq4ndhq0NAFNpDhsVv/XWixOjRV1uHJzd 0XLQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691765464; x=1692370264; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=lGGS85EdF+n2tsSxAgTDPy2Jb7EnRjrZDRNYv6vgzSs=; b=fQqY1fXMr+KROSTiE7i4ZwtwGjQ+RPz3aGFD4ki5mNEE5l8ndYRtOE0XsurLTu1fwG 2jP2mX6UZLUsEIibTqXM5NWa+FFRg4TcH2ujT3+atJPR+9Fv45vYXHUaXBcVczAcJx4E NCZpQ5R+7Nm0qUI2OZPNcX7MAcsxmsf41Qw0Z0YBQrfwe3PZlYkXd4kLkondPKZ4nAyV uj0uDJ/Szkqs6Chv5/Y2zKddFY5HWHXiI4mdXVrVSeoJyX3nt2vwMz/5zoDom69n5Hmn eFDv+k5qnw/Cv0HuAYAnxvbKdfpAAaXWgXgQX7RcOskJm5hfaIoRI9Xf5B0X4CbicPVI SEDQ== X-Gm-Message-State: AOJu0Yw1iFPi9fMNu3uaZQG/2fmRLzzUphC77BxM3vjtC6uhuptPvSpB sFX7gQQYiIJl6hjv4FzRWTc= X-Google-Smtp-Source: AGHT+IELlbMFrmXVkUWaWZPYOQEq9AhG7r5ZzVml8z57I19TPn5QM2K9vkogIEetp0jiDZ+KpClEQA== X-Received: by 2002:a05:6a21:4847:b0:104:ad71:f080 with SMTP id au7-20020a056a21484700b00104ad71f080mr1914941pzc.34.1691765463980; Fri, 11 Aug 2023 07:51:03 -0700 (PDT) Received: from localhost ([183.242.254.166]) by smtp.gmail.com with ESMTPSA id m16-20020aa79010000000b006827d86ca0csm3416849pfo.55.2023.08.11.07.51.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 11 Aug 2023 07:51:03 -0700 (PDT) From: Hawkins Jiawei To: jasowang@redhat.com, mst@redhat.com, eperezma@redhat.com Cc: qemu-devel@nongnu.org, yin31149@gmail.com, 18801353760@163.com, yuri.benditovich@daynix.com Subject: [RFC PATCH 0/2] Vhost-vdpa Shadow Virtqueue Hash calculation Support Date: Fri, 11 Aug 2023 22:50:48 +0800 Message-Id: X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::42a; envelope-from=yin31149@gmail.com; helo=mail-pf1-x42a.google.com X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org This series enables shadowed CVQ to intercept VIRTIO_NET_CTRL_MQ_HASH_CONFIG command through shadowed CVQ, update the virtio NIC device model so qemu send it in a migration, and the restore of that Hash calculation state in the destination. Note that this patch should be based on patch "vdpa: Send all CVQ state load commands in parallel" at [1]. [1]. https://lore.kernel.org/all/cover.1689748694.git.yin31149@gmail.com/ TestStep ======== 1. test the migration using vp-vdpa device - For L0 guest, boot QEMU with two virtio-net-pci net device with `ctrl_vq`, `mq`, `hash` features on, command line like: -netdev tap,... -device virtio-net-pci,disable-legacy=on,disable-modern=off, iommu_platform=on,mq=on,ctrl_vq=on,hash=on,guest_announce=off, indirect_desc=off,queue_reset=off,... - For L1 guest, apply the relative patch series and compile the source code, start QEMU with two vdpa device with svq mode on, enable the `ctrl_vq`, `mq`, `hash` features on, command line like: -netdev type=vhost-vdpa,x-svq=true,... -device virtio-net-pci,mq=on,guest_announce=off,ctrl_vq=on, hash=on,... - For L2 source guest, run the following bash command: ```bash #!/bin/sh ethtool -K eth0 rxhash on ``` - Gdb attach the destination VM and break at the vhost_vdpa_net_load_rss() - Execute the live migration in L2 source monitor - Result * with this series, gdb can hit the breakpoint and continue the executing without triggering any error or warning. Hawkins Jiawei (2): vdpa: Restore hash calculation state vdpa: Allow VIRTIO_NET_F_HASH_REPORT in SVQ net/vhost-vdpa.c | 89 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 89 insertions(+)