From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Liu, Yi L" Subject: [RFC v3 0/3] vfio_pci: wrap pci device as a mediated device Date: Tue, 23 Apr 2019 20:14:37 +0800 Message-ID: <1556021680-2911-1-git-send-email-yi.l.liu@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: alex.williamson-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, kwankhede-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org Cc: kevin.tian-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, jean-philippe.brucker-5wv7dgnIgG8@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, yamada.masahiro-uWyLwvC0a2jby3iVrkZq2A@public.gmane.org, yi.y.sun-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org List-Id: iommu@lists.linux-foundation.org This patchset aims to add a vfio-pci-like meta driver as a demo user of the vfio changes introduced in "vfio/mdev: IOMMU aware mediated device" patchset from Baolu Lu. Previous RFC v1 has given two proposals and the discussion could be found in following link. Per the comments, this patchset adds a separate driver named vfio-mdev-pci. It is a sample driver, but loactes in drivers/vfio/pci due to code sharing consideration. The corresponding Kconfig definition is in samples/Kconfig. https://lkml.org/lkml/2019/3/4/529 Besides the test purpose, per Alex's comments, it could also be a good base driver for experimenting with device specific mdev migration. Specific interface tested in this proposal: *) int mdev_set_iommu_device(struct device *dev, struct device *iommu_device) introduced in the patch as below: "[PATCH v5 6/8] vfio/mdev: Add iommu related member in mdev_device" Links: *) Link of "vfio/mdev: IOMMU aware mediated device" https://lwn.net/Articles/780522/ Please feel free give your comments. Thanks, Yi Liu Change log: v2->v3: - use vfio-mdev-pci instead of vfio-pci-mdev - place the new driver under drivers/vfio/pci while define Kconfig in samples/Kconfig to clarify it is a sample driver v1->v2: - instead of adding kernel option to existing vfio-pci module in v1, v2 follows Alex's suggestion to add a separate vfio-pci-mdev module. - new patchset subject: "vfio/pci: wrap pci device as a mediated device" Liu, Yi L (3): vfio_pci: split vfio_pci.c into two source files vfio/pci: protect cap/ecap_perm bits alloc/free with atomic op smaples: add vfio-mdev-pci driver drivers/vfio/pci/Makefile | 7 +- drivers/vfio/pci/common.c | 1511 +++++++++++++++++++++++++++++++++++ drivers/vfio/pci/vfio_mdev_pci.c | 386 +++++++++ drivers/vfio/pci/vfio_pci.c | 1476 +--------------------------------- drivers/vfio/pci/vfio_pci_config.c | 9 + drivers/vfio/pci/vfio_pci_private.h | 27 + samples/Kconfig | 11 + 7 files changed, 1962 insertions(+), 1465 deletions(-) create mode 100644 drivers/vfio/pci/common.c create mode 100644 drivers/vfio/pci/vfio_mdev_pci.c -- 2.7.4 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=-2.5 required=3.0 tests=DATE_IN_PAST_24_48, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED, 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 B0F9FC282CE for ; Wed, 24 Apr 2019 12:30:59 +0000 (UTC) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 864E920811 for ; Wed, 24 Apr 2019 12:30:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 864E920811 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from mail.linux-foundation.org (localhost [127.0.0.1]) by mail.linuxfoundation.org (Postfix) with ESMTP id 39DF4FD0; Wed, 24 Apr 2019 12:30:59 +0000 (UTC) Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id AF9E9FCF for ; Wed, 24 Apr 2019 12:30:57 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mga06.intel.com (mga06.intel.com [134.134.136.31]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 88450786 for ; Wed, 24 Apr 2019 12:30:56 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga104.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 24 Apr 2019 05:30:55 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.60,389,1549958400"; d="scan'208";a="167475632" Received: from yiliu-dev.bj.intel.com ([10.238.156.125]) by fmsmga001.fm.intel.com with ESMTP; 24 Apr 2019 05:30:53 -0700 From: "Liu, Yi L" To: alex.williamson@redhat.com, kwankhede@nvidia.com Subject: [RFC v3 0/3] vfio_pci: wrap pci device as a mediated device Date: Tue, 23 Apr 2019 20:14:37 +0800 Message-Id: <1556021680-2911-1-git-send-email-yi.l.liu@intel.com> X-Mailer: git-send-email 2.7.4 Cc: kevin.tian@intel.com, kvm@vger.kernel.org, jean-philippe.brucker@arm.com, linux-kernel@vger.kernel.org, yamada.masahiro@socionext.com, yi.y.sun@intel.com, iommu@lists.linux-foundation.org X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Sender: iommu-bounces@lists.linux-foundation.org Errors-To: iommu-bounces@lists.linux-foundation.org Message-ID: <20190423121437.r-UGYJwKKySUO7QLRSyrYMRO1syMG8c5RZPpqN1vFYU@z> This patchset aims to add a vfio-pci-like meta driver as a demo user of the vfio changes introduced in "vfio/mdev: IOMMU aware mediated device" patchset from Baolu Lu. Previous RFC v1 has given two proposals and the discussion could be found in following link. Per the comments, this patchset adds a separate driver named vfio-mdev-pci. It is a sample driver, but loactes in drivers/vfio/pci due to code sharing consideration. The corresponding Kconfig definition is in samples/Kconfig. https://lkml.org/lkml/2019/3/4/529 Besides the test purpose, per Alex's comments, it could also be a good base driver for experimenting with device specific mdev migration. Specific interface tested in this proposal: *) int mdev_set_iommu_device(struct device *dev, struct device *iommu_device) introduced in the patch as below: "[PATCH v5 6/8] vfio/mdev: Add iommu related member in mdev_device" Links: *) Link of "vfio/mdev: IOMMU aware mediated device" https://lwn.net/Articles/780522/ Please feel free give your comments. Thanks, Yi Liu Change log: v2->v3: - use vfio-mdev-pci instead of vfio-pci-mdev - place the new driver under drivers/vfio/pci while define Kconfig in samples/Kconfig to clarify it is a sample driver v1->v2: - instead of adding kernel option to existing vfio-pci module in v1, v2 follows Alex's suggestion to add a separate vfio-pci-mdev module. - new patchset subject: "vfio/pci: wrap pci device as a mediated device" Liu, Yi L (3): vfio_pci: split vfio_pci.c into two source files vfio/pci: protect cap/ecap_perm bits alloc/free with atomic op smaples: add vfio-mdev-pci driver drivers/vfio/pci/Makefile | 7 +- drivers/vfio/pci/common.c | 1511 +++++++++++++++++++++++++++++++++++ drivers/vfio/pci/vfio_mdev_pci.c | 386 +++++++++ drivers/vfio/pci/vfio_pci.c | 1476 +--------------------------------- drivers/vfio/pci/vfio_pci_config.c | 9 + drivers/vfio/pci/vfio_pci_private.h | 27 + samples/Kconfig | 11 + 7 files changed, 1962 insertions(+), 1465 deletions(-) create mode 100644 drivers/vfio/pci/common.c create mode 100644 drivers/vfio/pci/vfio_mdev_pci.c -- 2.7.4 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu