From patchwork Mon Jul 3 07:15:05 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Duan, Zhenzhong" X-Patchwork-Id: 13299648 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 7E18CEB64DC for ; Mon, 3 Jul 2023 07:29:45 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qGDyt-0006Cg-IW; Mon, 03 Jul 2023 03:28:19 -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 1qGDyq-0006Bz-RH for qemu-devel@nongnu.org; Mon, 03 Jul 2023 03:28:16 -0400 Received: from mga12.intel.com ([192.55.52.136]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qGDyo-0003wW-9I for qemu-devel@nongnu.org; Mon, 03 Jul 2023 03:28:16 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1688369294; x=1719905294; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=VpIREP5MT8wVXbkjepEF3LfVGr8W4zBPTheqqga3rl0=; b=LFXuHvmqd/4L2TPGrzx0bY6y6JhjZfvQomYUHxqwkIfOrjpvN8mRc5t9 61M3crW7dDr+vBOtmelaoHhyja5KcluIz7hkofX0K8zpLdUycDR6TFttG VzNI/TShdS/zTVdHs5qtZe/gtgQDe/Jw8MyR6IP2FtdGZEF+xcGsuiu14 IVcUb4coqccbmTidG5esBBkBr/RYei1YggC7RlEiPU3TzTNuHq5XjpGtX OR8pHNhl0+2D4wBF1nMDi+rGKJrzbBMp1dDeausP9+0hCuwztll3ZkxsI ziJoiO0wL4Hq6JT3GQJ+IqHIqjozsZGHo8692VcDC3cr6OEhlaNH13AlX Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10759"; a="342405624" X-IronPort-AV: E=Sophos;i="6.01,177,1684825200"; d="scan'208";a="342405624" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Jul 2023 00:28:10 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10759"; a="748058757" X-IronPort-AV: E=Sophos;i="6.01,177,1684825200"; d="scan'208";a="748058757" Received: from duan-server-s2600bt.bj.intel.com ([10.240.192.147]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Jul 2023 00:28:07 -0700 From: Zhenzhong Duan To: qemu-devel@nongnu.org Cc: alex.williamson@redhat.com, clg@redhat.com, joao.m.martins@oracle.com, avihaih@nvidia.com, chao.p.peng@intel.com Subject: [PATCH v6 0/7] VFIO migration related refactor and bug fix Date: Mon, 3 Jul 2023 15:15:05 +0800 Message-Id: <20230703071510.160712-1-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Received-SPF: pass client-ip=192.55.52.136; envelope-from=zhenzhong.duan@intel.com; helo=mga12.intel.com X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 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_MED=-2.3, SPF_HELO_PASS=-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 Hello, PATCH4,6,7 refactors the VFIO migration blocker related code based on suggestions from Joao and Cedric, so that code is simpler and redundant "Migration disabled" isn't printed. But before that works, also found some hotplug bugs when testing blocker adding failed case. PATCH1-3,5 fix them. See patch description for details. v6: Update patch description with Joao suggested words Move rename patch to last and keep int return type for internal functions per Joao Move a check out from vfio_migration_deinit() Add Reviewed-by v5: PATCH1-2 are not sent in v5 as Cedric already picked them Minor adjust on PATCH3 per Joao and Cedric Move PATCH4 after refactor patch per Joao Split refactor patch to three patches, PATCH4,5,7 per Cedric v4: Rebased on [1] which contains Avihai's patchset [2] Add more patches to fix resource leak issue, split based on different fix TAG per Joao Change to not print "Migration disabled" with explicit enable-migration=off per Avihai Rename vfio_block_giommu_migration to vfio_viommu_preset per Joao v3: Add PATCH1,2 to fix hotplug bug Fix bugs in PATCH3 Avihai and Joao pointed out Tested vfio hotplug/unplug with vfio migration supported and unsupported cases, and different param of enable-migration=[on/off/auto] and -only-migratable. [1] https://github.com/legoater/qemu/tree/vfio-next [2] https://lists.nongnu.org/archive/html/qemu-devel/2023-06/msg06117.html Thanks Zhenzhong Duan (5): vfio/pci: Disable INTx in vfio_realize error path vfio/migration: Change vIOMMU blocker from global to per device vfio/migration: Free resources when vfio_migration_realize fails vfio/migration: Remove print of "Migration disabled" vfio/migration: Return bool type for vfio_migration_realize() hw/vfio/common.c | 51 ++--------------------------------- hw/vfio/migration.c | 51 ++++++++++++++++++++++++----------- hw/vfio/pci.c | 9 ++++--- include/hw/vfio/vfio-common.h | 5 ++-- 4 files changed, 44 insertions(+), 72 deletions(-)