From patchwork Mon Oct 16 13:42:36 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Hanna Czenczek X-Patchwork-Id: 13423321 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 53E5FCDB465 for ; Mon, 16 Oct 2023 13:42:58 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qsNry-0001H5-SD; Mon, 16 Oct 2023 09:42:56 -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 1qsNrw-0001Ex-45 for qemu-devel@nongnu.org; Mon, 16 Oct 2023 09:42:52 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qsNru-0003I8-4P for qemu-devel@nongnu.org; Mon, 16 Oct 2023 09:42:51 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1697463768; 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=L6e5W231Q7udcMOb3rPRpfUo/44l0/jlgYuAizCQPfw=; b=dA/nUlAGXikLIuIjFCXCB3Z+cl0337UrZ9uOG/zWFR5EijxxEQQtztxFbqqlPUKlbaCPvQ 6AMfSGLtMCB6N9lxAfvhAfoGukk51UvmO4yLq3bPxe39Hr4hWTOVrJrzGN7u1fn+PDKGOr 9qUmyyTFvpkhh9+hWmzxZsw1M7PRCM8= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-436-QpzYOxdFO-ycZCxAbIQWDw-1; Mon, 16 Oct 2023 09:42:46 -0400 X-MC-Unique: QpzYOxdFO-ycZCxAbIQWDw-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 4B16A862F1E; Mon, 16 Oct 2023 13:42:46 +0000 (UTC) Received: from localhost (unknown [10.39.192.211]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 608B4492BEE; Mon, 16 Oct 2023 13:42:45 +0000 (UTC) From: Hanna Czenczek To: qemu-devel@nongnu.org, virtio-fs@redhat.com Cc: Hanna Czenczek , "Michael S . Tsirkin" , Stefan Hajnoczi , German Maglione , =?utf-8?q?Eugenio_P=C3=A9rez?= , Anton Kuchin Subject: [PATCH v5 0/7] vhost-user: Back-end state migration Date: Mon, 16 Oct 2023 15:42:36 +0200 Message-ID: <20231016134243.68248-1-hreitz@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.9 Received-SPF: pass client-ip=170.10.133.124; envelope-from=hreitz@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_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, 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 v2: https://lists.nongnu.org/archive/html/qemu-devel/2023-07/msg02604.html v3: https://lists.nongnu.org/archive/html/qemu-devel/2023-09/msg03750.html v4: https://lists.nongnu.org/archive/html/qemu-devel/2023-10/msg01046.html Based-on: <20231004014532.1228637-1-stefanha@redhat.com> ([PATCH v2 0/3] vhost: clean up device reset) Based-on: <20231016083201.23736-1-hreitz@redhat.com> ([PATCH] vhost-user: Fix protocol feature bit conflict) Hi, v5 is basically the same as v4, only that I’ve dropped the patch deprecating F_STATUS (which doesn’t affect the rest of the series), that I’ve amended the documentation in patch 1 as suggested by Stefan and with help from Michael, and that I’ve rebased everything on top of the F_SHARED_OBJECT changes that have been merged upstream. git-backport-diff against v4: Key: [----] : patches are identical [####] : number of functional differences between upstream/downstream patch [down] : patch is downstream-only The flags [FC] indicate (F)unctional and (C)ontextual differences, respectively 001/7:[0029] [FC] 'vhost-user.rst: Improve [GS]ET_VRING_BASE doc' 002/7:[----] [--] 'vhost-user.rst: Clarify enabling/disabling vrings' 003/7:[----] [--] 'vhost-user.rst: Introduce suspended state' 004/7:[0006] [FC] 'vhost-user.rst: Migrating back-end-internal state' 005/7:[0007] [FC] 'vhost-user: Interface for migration state transfer' 006/7:[----] [--] 'vhost: Add high-level state save/load functions' 007/7:[----] [--] 'vhost-user-fs: Implement internal migration' Changes patch by patch: - Patch 1: Amended documentation - Patches 4 and 5: Bumped feature bit and command values as necessary so as not to conflict with F_SHARED_OBJECT Hanna Czenczek (7): vhost-user.rst: Improve [GS]ET_VRING_BASE doc vhost-user.rst: Clarify enabling/disabling vrings vhost-user.rst: Introduce suspended state vhost-user.rst: Migrating back-end-internal state vhost-user: Interface for migration state transfer vhost: Add high-level state save/load functions vhost-user-fs: Implement internal migration docs/interop/vhost-user.rst | 301 ++++++++++++++++++++++++++++-- include/hw/virtio/vhost-backend.h | 24 +++ include/hw/virtio/vhost-user.h | 1 + include/hw/virtio/vhost.h | 113 +++++++++++ hw/virtio/vhost-user-fs.c | 101 +++++++++- hw/virtio/vhost-user.c | 146 +++++++++++++++ hw/virtio/vhost.c | 241 ++++++++++++++++++++++++ 7 files changed, 906 insertions(+), 21 deletions(-)