From mboxrd@z Thu Jan 1 00:00:00 1970 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 639ACC001DE for ; Fri, 28 Jul 2023 17:28:12 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qPR8t-0001KY-SP; Fri, 28 Jul 2023 13:20:44 -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 1qPR8r-0001Is-IM for qemu-devel@nongnu.org; Fri, 28 Jul 2023 13:20:41 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qPR8o-0008Cg-KD for qemu-devel@nongnu.org; Fri, 28 Jul 2023 13:20:40 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1690564837; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=vWG/YKlWPRi3+Dcow7XWoyCQfxvF7yk6CAeClBHXYNI=; b=SSvzDa0XDpCbswm3EEhwRQyUOtnT7NL4U7vYXZ09mLhQ4eilqFTp8H8IaF/GdTcTqpHypk 89TjBuYCz1p6E+ohLUFLeu2BRSLJr/e2kt+t2Ke+Wb+vAdjsZ+9/sSEb+iYpXfD7NpJ02Q BBFHG550PmKHowSX1AdUYMZkdFQ629c= Received: from mimecast-mx02.redhat.com (66.187.233.73 [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-117-yMDoCYOpNuabY8NsunK-UQ-1; Fri, 28 Jul 2023 13:20:33 -0400 X-MC-Unique: yMDoCYOpNuabY8NsunK-UQ-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 0FC793801BCD; Fri, 28 Jul 2023 17:20:33 +0000 (UTC) Received: from eperezma.remote.csb (unknown [10.39.193.99]) by smtp.corp.redhat.com (Postfix) with ESMTP id AD7921121330; Fri, 28 Jul 2023 17:20:30 +0000 (UTC) From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Jason Wang , Gautam Dawar , si-wei.liu@oracle.com, Zhu Lingshan , Stefano Garzarella , Parav Pandit , Cindy Lu , "Michael S. Tsirkin" , Harpreet Singh Anand , Laurent Vivier , Shannon Nelson , Lei Yang , Dragos Tatulea Subject: [PATCH 0/7] Enable vdpa net migration with features depending on CVQ Date: Fri, 28 Jul 2023 19:20:21 +0200 Message-Id: <20230728172028.2074052-1-eperezma@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.1 on 10.11.54.3 Received-SPF: pass client-ip=170.10.129.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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 At this moment the migration of net features that depends on CVQ is not=0D possible, as there is no reliable way to restore the device state like mac= =0D address, number of enabled queues, etc to the destination. This is mainly= =0D caused because the device must only read CVQ, and process all the commands= =0D before resuming the dataplane.=0D =0D This series lift that requirement, sending the VHOST_VDPA_SET_VRING_ENABLE= =0D ioctl for dataplane vqs only after the device has processed all commands.=0D ---=0D >From FRC:=0D * Enable vqs early in case CVQ cannot be shadowed.=0D =0D Eugenio P=C3=A9rez (7):=0D vdpa: export vhost_vdpa_set_vring_ready=0D vdpa: add should_enable op=0D vdpa: use virtio_ops->should_enable at vhost_vdpa_set_vrings_ready=0D vdpa: add stub vhost_vdpa_should_enable=0D vdpa: delay enable of data vqs=0D vdpa: enable cvq svq if data vq are shadowed=0D vdpa: remove net cvq migration blocker=0D =0D include/hw/virtio/vhost-vdpa.h | 9 +++++=0D hw/virtio/vhost-vdpa.c | 33 ++++++++++++----=0D net/vhost-vdpa.c | 69 ++++++++++++++++++++++++++--------=0D hw/virtio/trace-events | 2 +-=0D 4 files changed, 89 insertions(+), 24 deletions(-)=0D =0D -- =0D 2.39.3=0D =0D