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 X-Spam-Level: X-Spam-Status: No, score=-2.9 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 733BCC004C9 for ; Mon, 6 May 2019 01:53:38 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 480BC205F4 for ; Mon, 6 May 2019 01:53:38 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 480BC205F4 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([127.0.0.1]:48784 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hNSoz-00050W-L2 for qemu-devel@archiver.kernel.org; Sun, 05 May 2019 21:53:37 -0400 Received: from eggs.gnu.org ([209.51.188.92]:45954) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hNSoE-0004hd-9a for qemu-devel@nongnu.org; Sun, 05 May 2019 21:52:51 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hNSoD-0005ms-Ct for qemu-devel@nongnu.org; Sun, 05 May 2019 21:52:50 -0400 Received: from mga01.intel.com ([192.55.52.88]:63085) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hNSoD-0005kK-3D for qemu-devel@nongnu.org; Sun, 05 May 2019 21:52:49 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 05 May 2019 18:52:41 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.60,435,1549958400"; d="scan'208";a="140310192" Received: from joy-optiplex-7040.sh.intel.com ([10.239.13.9]) by orsmga008.jf.intel.com with ESMTP; 05 May 2019 18:52:35 -0700 From: Yan Zhao To: intel-gvt-dev@lists.freedesktop.org Date: Sun, 5 May 2019 21:45:14 -0400 Message-Id: <20190506014514.3555-1-yan.y.zhao@intel.com> X-Mailer: git-send-email 2.17.1 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 192.55.52.88 Subject: [Qemu-devel] [PATCH v2 0/2] introduction of version attribute for VFIO live migration X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: cjia@nvidia.com, kvm@vger.kernel.org, aik@ozlabs.ru, Zhengxiao.zx@alibaba-inc.com, shuangtai.tst@alibaba-inc.com, qemu-devel@nongnu.org, kwankhede@nvidia.com, eauger@redhat.com, yi.l.liu@intel.com, eskultet@redhat.com, ziye.yang@intel.com, mlevitsk@redhat.com, pasic@linux.ibm.com, libvir-list@redhat.com, arei.gonglei@huawei.com, felipe@nutanix.com, Ken.Xue@amd.com, kevin.tian@intel.com, Yan Zhao , dgilbert@redhat.com, zhenyuw@linux.intel.com, dinechin@redhat.com, alex.williamson@redhat.com, changpeng.liu@intel.com, cohuck@redhat.com, linux-kernel@vger.kernel.org, zhi.a.wang@intel.com, jonathan.davies@nutanix.com, shaopeng.he@intel.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This patchset introduces a version attribute under sysfs of VFIO Mediated devices. This version attribute is used to check whether two mdev devices are compatible. user space software can take advantage of this version attribute to determine whether to launch live migration between two mdev devices. Patch 1 defines version attribute in Documentation/vfio-mediated-device.txt Patch 2 uses GVT as an example to show how to expose version attribute and check device compatibility in vendor driver. v2: 1. renamed patched 1 2. made definition of device version string completely private to vendor driver 3. abandoned changes to sample mdev drivers 4. described intent and usage of version attribute more clearly. Yan Zhao (2): vfio/mdev: add version attribute for mdev device drm/i915/gvt: export mdev device version to sysfs for Intel vGPU Documentation/vfio-mediated-device.txt | 135 ++++++++++++++++++++++ drivers/gpu/drm/i915/gvt/Makefile | 2 +- drivers/gpu/drm/i915/gvt/device_version.c | 84 ++++++++++++++ drivers/gpu/drm/i915/gvt/gvt.c | 51 ++++++++ drivers/gpu/drm/i915/gvt/gvt.h | 6 + 5 files changed, 277 insertions(+), 1 deletion(-) create mode 100644 drivers/gpu/drm/i915/gvt/device_version.c -- 2.17.1