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Herne" , "Tian, Kevin" , kvm@vger.kernel.org, "Liu, Yi L" Subject: [PATCH v3 0/7] Make the rest of the VFIO driver interface use vfio_device Date: Mon, 2 May 2022 14:31:30 -0300 Message-Id: <0-v3-e131a9b6b467+14b6-vfio_mdev_no_group_jgg@nvidia.com> Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: MN2PR06CA0024.namprd06.prod.outlook.com (2603:10b6:208:23d::29) To MN2PR12MB4192.namprd12.prod.outlook.com (2603:10b6:208:1d5::15) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 320fb102-b650-4b68-eed4-08da2c619cbb X-MS-TrafficTypeDiagnostic: CO6PR12MB5458:EE_ X-Microsoft-Antispam-PRVS: X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: YvSVZvLqeT24a0mrru5+Db6LboD0hpUmR+fQD8mmsrNvVd6fBpa/dCioF4jxeEL9JQq0xWj3m5cyth1EXMjSEDwlrHpwpLkbC437JifbV0myYt6vYxBWDvUJNuoAcdxfyRTOnYlW8p/vOUmTEJAwWAsgPfc8EF/OnlAnuecjk5NyTavaosPWgbW13tfdFXX7iMEVWDsYsP/OcyxfbGVeW00EjQ32jhVWtTHZQZFJsWd/HqLEoYb4LdiCzWtqpzJ3AakT/IVQ98lmNG0FLOSeY2+jNJXIALJD52H7h4bLjN2PMUwBL0addmWtxv/YFa6N4Stu4DSm7rsu/n7hyQCW5+RLynVMGEjLTEOmAyMCnJaE1oYtLt+b3gfnGgr3kp4H9ud0gt+I8CShwDjjQuwX0UwiCnFCbAkbAKxcJXEwbCoe1SCEiL8wVOKFE6lMeLFX8AoNLsJkjFcP6zvW7DslbTbNeXPZ9UEsbPmsyoO/b0EborffJfCzgrXMokqj2xV8U/x495PRdkD4rc8sq3YtQ63M/i3d8s5gKOoTgDHrNE1vrxEsQYuJuXfBh5hgOSAkbUFZw7SeNpuKSGqn4KDYnnh+OEXqK1b7SDa6fy9YIHRHTEeEHh/soCCWNh23/Du+6qRa6GDlnl0RKfWZ9XgnW4RZkirPfzC4JkUMG6qRpWJbb+bTfRlM2WzkPqEhOXkSIRTSDGZw6QVAlRroX+GvJG1CXojsHOZVuJjHpvPe+3OXgRexFiFgxo2Q3F08tM3ZhJ/6Vc6+VaZ8lzOHZ5rT4uqb22kv6wrFC6tGMKW6ap4mWXaulUVl19QCbgTrFUp1CVySS+AAM7zWOEmXvwBzsw== X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:MN2PR12MB4192.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230001)(4636009)(366004)(109986005)(966005)(6486002)(508600001)(2616005)(86362001)(6512007)(26005)(6506007)(38100700002)(6666004)(316002)(66476007)(2906002)(66946007)(66556008)(186003)(36756003)(5660300002)(8936002)(54906003)(4326008)(83380400001)(8676002)(4216001)(266003);DIR:OUT;SFP:1101; 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(no To-header on input) Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Prior series have transformed other parts of VFIO from working on struct device or struct vfio_group into working directly on struct vfio_device. Based on that work we now have vfio_device's readily available in all the drivers. Update the rest of the driver facing API to use vfio_device as an input. The following are switched from struct device to struct vfio_device: vfio_register_notifier() vfio_unregister_notifier() vfio_pin_pages() vfio_unpin_pages() vfio_dma_rw() The following group APIs are obsoleted and removed by just using struct vfio_device with the above: vfio_group_pin_pages() vfio_group_unpin_pages() vfio_group_iommu_domain() vfio_group_get_external_user_from_dev() To retain the performance of the new device APIs relative to their group versions optimize how vfio_group_add_container_user() is used to avoid calling it when the driver must already guarantee the device is open and the container_users incrd. The remaining exported VFIO group interfaces are only used by kvm, and are addressed by a parallel series. This series is based on Christoph's gvt rework here: https://lore.kernel.org/all/5a8b9f48-2c32-8177-1c18-e3bd7bfde558@intel.com/ and so will need the PR merged first. I have a followup series that needs this. This is also part of the iommufd work - moving the driver facing interface to vfio_device provides a much cleaner path to integrate with iommufd. v3: - Based on VFIO's gvt/iommu merge - Remove mention of mdev_legacy_get_vfio_device() from commit message - Clarify commit message for vfio_dma_rw() conversion - Talk about the open_count change in the commit message - No code change v2: https://lore.kernel.org/r/0-v2-6011bde8e0a1+5f-vfio_mdev_no_group_jgg@nvidia.com - Based on Christoph's series so mdev_legacy_get_vfio_device() is removed - Reflow indenting - Use vfio_assert_device_open() and WARN_ON_ONCE instead of open coding the assertion v1: https://lore.kernel.org/r/0-v1-a8faf768d202+125dd-vfio_mdev_no_group_jgg@nvidia.com Jason Gunthorpe (7): vfio: Make vfio_(un)register_notifier accept a vfio_device vfio/ccw: Remove mdev from struct channel_program vfio/mdev: Pass in a struct vfio_device * to vfio_pin/unpin_pages() vfio/mdev: Pass in a struct vfio_device * to vfio_dma_rw() drm/i915/gvt: Change from vfio_group_(un)pin_pages to vfio_(un)pin_pages vfio: Remove dead code vfio: Remove calls to vfio_group_add_container_user() .../driver-api/vfio-mediated-device.rst | 4 +- drivers/gpu/drm/i915/gvt/gvt.h | 5 +- drivers/gpu/drm/i915/gvt/kvmgt.c | 51 ++-- drivers/s390/cio/vfio_ccw_cp.c | 47 +-- drivers/s390/cio/vfio_ccw_cp.h | 4 +- drivers/s390/cio/vfio_ccw_fsm.c | 3 +- drivers/s390/cio/vfio_ccw_ops.c | 7 +- drivers/s390/crypto/vfio_ap_ops.c | 23 +- drivers/vfio/vfio.c | 288 ++---------------- include/linux/vfio.h | 21 +- 10 files changed, 102 insertions(+), 351 deletions(-) base-commit: 676d7cda1a3c19872428a9bc818577a1aafafdd5 -- 2.36.0 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 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 F32CEC433F5 for ; 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Herne" , Eric Farman , "Liu, Yi L" , kvm@vger.kernel.org, intel-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, Christoph Hellwig Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Prior series have transformed other parts of VFIO from working on struct device or struct vfio_group into working directly on struct vfio_device. Based on that work we now have vfio_device's readily available in all the drivers. Update the rest of the driver facing API to use vfio_device as an input. The following are switched from struct device to struct vfio_device: vfio_register_notifier() vfio_unregister_notifier() vfio_pin_pages() vfio_unpin_pages() vfio_dma_rw() The following group APIs are obsoleted and removed by just using struct vfio_device with the above: vfio_group_pin_pages() vfio_group_unpin_pages() vfio_group_iommu_domain() vfio_group_get_external_user_from_dev() To retain the performance of the new device APIs relative to their group versions optimize how vfio_group_add_container_user() is used to avoid calling it when the driver must already guarantee the device is open and the container_users incrd. The remaining exported VFIO group interfaces are only used by kvm, and are addressed by a parallel series. This series is based on Christoph's gvt rework here: https://lore.kernel.org/all/5a8b9f48-2c32-8177-1c18-e3bd7bfde558@intel.com/ and so will need the PR merged first. I have a followup series that needs this. This is also part of the iommufd work - moving the driver facing interface to vfio_device provides a much cleaner path to integrate with iommufd. v3: - Based on VFIO's gvt/iommu merge - Remove mention of mdev_legacy_get_vfio_device() from commit message - Clarify commit message for vfio_dma_rw() conversion - Talk about the open_count change in the commit message - No code change v2: https://lore.kernel.org/r/0-v2-6011bde8e0a1+5f-vfio_mdev_no_group_jgg@nvidia.com - Based on Christoph's series so mdev_legacy_get_vfio_device() is removed - Reflow indenting - Use vfio_assert_device_open() and WARN_ON_ONCE instead of open coding the assertion v1: https://lore.kernel.org/r/0-v1-a8faf768d202+125dd-vfio_mdev_no_group_jgg@nvidia.com Jason Gunthorpe (7): vfio: Make vfio_(un)register_notifier accept a vfio_device vfio/ccw: Remove mdev from struct channel_program vfio/mdev: Pass in a struct vfio_device * to vfio_pin/unpin_pages() vfio/mdev: Pass in a struct vfio_device * to vfio_dma_rw() drm/i915/gvt: Change from vfio_group_(un)pin_pages to vfio_(un)pin_pages vfio: Remove dead code vfio: Remove calls to vfio_group_add_container_user() .../driver-api/vfio-mediated-device.rst | 4 +- drivers/gpu/drm/i915/gvt/gvt.h | 5 +- drivers/gpu/drm/i915/gvt/kvmgt.c | 51 ++-- drivers/s390/cio/vfio_ccw_cp.c | 47 +-- drivers/s390/cio/vfio_ccw_cp.h | 4 +- drivers/s390/cio/vfio_ccw_fsm.c | 3 +- drivers/s390/cio/vfio_ccw_ops.c | 7 +- drivers/s390/crypto/vfio_ap_ops.c | 23 +- drivers/vfio/vfio.c | 288 ++---------------- include/linux/vfio.h | 21 +- 10 files changed, 102 insertions(+), 351 deletions(-) base-commit: 676d7cda1a3c19872428a9bc818577a1aafafdd5 -- 2.36.0