From patchwork Mon Sep 18 06:25:33 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Cao, Yahui" X-Patchwork-Id: 13388830 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7A6A7CD37B0 for ; Mon, 18 Sep 2023 06:28:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239846AbjIRG2V (ORCPT ); Mon, 18 Sep 2023 02:28:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38252 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239840AbjIRG1w (ORCPT ); Mon, 18 Sep 2023 02:27:52 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.120]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 721B3E6; Sun, 17 Sep 2023 23:27:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1695018466; x=1726554466; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=MSrTiWCIELO8HXPgO6xkqFMTU+MDvG8u2XBd/c8fIxU=; b=AvT01o1dlMqHsQpBgEPkGwAsK9gEPARwymeCMkXtpo7pCO3ZMjgrqpfX ej/OglJ1zmuqmKFIi7zyhfqM4HesmNB2E/XbKMS5tzMA+p2BVh03ZA3eJ tk34S1KN24ikEQTuJrXIh8KMNVfDzQ9xhYg76CPdA+ur+rsIXfsm+tlMX KKJB53nj/B5vlcGtlsBjy02bD4bZhPEbFux8sRdEft6FLOZKmXFlxgQ7I cYMBaA4UVugl6QJUcZS7IGg5Er14ZLEBxTB+JMgE1QMoT0g1c/yUfxxiY vJ0fSROh2mwM6YmERBDUm4atLiSOtrBS8knuZ8RXAvvU2e5xwbIYZfwYM g==; X-IronPort-AV: E=McAfee;i="6600,9927,10836"; a="378488450" X-IronPort-AV: E=Sophos;i="6.02,155,1688454000"; d="scan'208";a="378488450" Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Sep 2023 23:27:45 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10836"; a="815893349" X-IronPort-AV: E=Sophos;i="6.02,155,1688454000"; d="scan'208";a="815893349" Received: from dpdk-yahui-icx1.sh.intel.com ([10.67.111.186]) by fmsmga004.fm.intel.com with ESMTP; 17 Sep 2023 23:27:40 -0700 From: Yahui Cao To: intel-wired-lan@lists.osuosl.org Cc: kvm@vger.kernel.org, netdev@vger.kernel.org, lingyu.liu@intel.com, kevin.tian@intel.com, madhu.chittim@intel.com, sridhar.samudrala@intel.com, alex.williamson@redhat.com, jgg@nvidia.com, yishaih@nvidia.com, shameerali.kolothum.thodi@huawei.com, brett.creeley@amd.com, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, jesse.brandeburg@intel.com, anthony.l.nguyen@intel.com Subject: [PATCH iwl-next v3 00/13] Add E800 live migration driver Date: Mon, 18 Sep 2023 06:25:33 +0000 Message-Id: <20230918062546.40419-1-yahui.cao@intel.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org This series adds vfio live migration support for Intel E810 VF devices based on the v2 migration protocol definition series discussed here[0]. Steps to test: 1. Bind one or more E810 VF devices to the module ice_vfio_pci.ko 2. Assign the VFs to the virtual machine and enable device live migration 3. Run a workload using IAVF inside the VM, for example, iperf. 4. Migrate the VM from the source node to a destination node. Thanks, Yahui [0] https://lore.kernel.org/kvm/20220224142024.147653-1-yishaih@nvidia.com/ Change log: v2 --> v3: link [2] - Add P2P support in vfio driver (Jason) - Remove source/destination check in vfio driver (Jason) - Restructure PF exported API with proper types and layering (Jason) - Change patchset email sender. - Reword commit message and comments to be more reviewer-friendly (Kevin) - Add s-o-b for Patch01 (Kevin) - Merge Patch08 into Patch04 and merge Patch13 into Patch06 (Kevin) - Remove uninit() in VF destroy stage for Patch 05 (Kevin) - change migration_active to migration_enabled (Kevin) - Add total_size in devstate to greatly simplify the various checks for Patch07 (Kevin) - Add magic and version in device state for Patch07 (Kevin) - Fix rx head init issue in Patch10 (Kevin) - Remove DMA access for Guest Memory at device resume stage and deprecate the approach to restore TX head in VF space, instead restore TX head in PF space and then switch context back to VF space which is transparent to Guest for Patch11 (Jason, Kevin) - Use non-interrupt mode instead of VF MSIX vector to restore TX head for Patch11 (Kevin) - Move VF pci mmio save/restore from vfio driver into PF driver - Add configuration match check at device resume stage (Kevin) - Remove sleep before stopping queue at device suspend stage (Kevin) - Let PF respond failure to VF if virtual channel messages logging failed (Kevin) - Add migration setup and description in cover letter [2] https://lore.kernel.org/intel-wired-lan/20230621091112.44945-1-lingyu.liu@intel.com/ v1 --> v2: link [1] - clarified comments and commit message [1] https://lore.kernel.org/intel-wired-lan/20230620100001.5331-1-lingyu.liu@intel.com/ --- Lingyu Liu (9): ice: Introduce VF state ICE_VF_STATE_REPLAYING_VC for migration ice: Add fundamental migration init and exit function ice: Log virtual channel messages in PF ice: Add device state save/restore function for migration ice: Fix VSI id in virtual channel message for migration ice: Save and restore RX Queue head ice: Save and restore TX Queue head ice: Add device suspend function for migration vfio/ice: Implement vfio_pci driver for E800 devices Xu Ting (1): ice: Fix missing legacy 32byte RXDID in the supported bitmap Yahui Cao (3): ice: Add function to get RX queue context ice: Add function to get and set TX queue context ice: Save and restore mmio registers MAINTAINERS | 7 + drivers/net/ethernet/intel/ice/Makefile | 3 +- drivers/net/ethernet/intel/ice/ice.h | 3 + drivers/net/ethernet/intel/ice/ice_common.c | 484 +++++- drivers/net/ethernet/intel/ice/ice_common.h | 11 + .../net/ethernet/intel/ice/ice_hw_autogen.h | 23 + .../net/ethernet/intel/ice/ice_lan_tx_rx.h | 3 + drivers/net/ethernet/intel/ice/ice_main.c | 15 + .../net/ethernet/intel/ice/ice_migration.c | 1344 +++++++++++++++++ .../intel/ice/ice_migration_private.h | 44 + drivers/net/ethernet/intel/ice/ice_vf_lib.c | 4 + drivers/net/ethernet/intel/ice/ice_vf_lib.h | 10 + drivers/net/ethernet/intel/ice/ice_virtchnl.c | 267 ++-- drivers/net/ethernet/intel/ice/ice_virtchnl.h | 15 +- .../ethernet/intel/ice/ice_virtchnl_fdir.c | 28 +- drivers/vfio/pci/Kconfig | 2 + drivers/vfio/pci/Makefile | 2 + drivers/vfio/pci/ice/Kconfig | 10 + drivers/vfio/pci/ice/Makefile | 4 + drivers/vfio/pci/ice/ice_vfio_pci.c | 707 +++++++++ include/linux/net/intel/ice_migration.h | 42 + 21 files changed, 2916 insertions(+), 112 deletions(-) create mode 100644 drivers/net/ethernet/intel/ice/ice_migration.c create mode 100644 drivers/net/ethernet/intel/ice/ice_migration_private.h create mode 100644 drivers/vfio/pci/ice/Kconfig create mode 100644 drivers/vfio/pci/ice/Makefile create mode 100644 drivers/vfio/pci/ice/ice_vfio_pci.c create mode 100644 include/linux/net/intel/ice_migration.h