From: Kirti Wankhede <kwankhede@nvidia.com> To: <alex.williamson@redhat.com>, <pbonzini@redhat.com>, <kraxel@redhat.com>, <cjia@nvidia.com> Cc: <qemu-devel@nongnu.org>, <kvm@vger.kernel.org>, <kevin.tian@intel.com>, <jike.song@intel.com>, <bjsdjshi@linux.vnet.ibm.com>, <linux-kernel@vger.kernel.org>, Kirti Wankhede <kwankhede@nvidia.com> Subject: [PATCH v12 00/22] Add Mediated device support Date: Mon, 14 Nov 2016 21:12:14 +0530 [thread overview] Message-ID: <1479138156-28905-1-git-send-email-kwankhede@nvidia.com> (raw) This series adds Mediated device support to Linux host kernel. Purpose of this series is to provide a common interface for mediated device management that can be used by different devices. This series introduces Mdev core module that creates and manages mediated devices, VFIO based driver for mediated devices that are created by mdev core module and update VFIO type1 IOMMU module to support pinning & unpinning for mediated devices. What changed v11-> v12? vfio_iommu_type1: - Pinned pages are tracked in vfio_dma structure for that range, dma->iova to dma->iova + dma->size. - Key for pfn_list rb-tree is iova, instead of pfn. - Removing address space structure. vfio_dma keeps task structure, which is used to get mm structure (using get_task_mm(task) and mmput(mm)) for pin/unpin and page accounting. - vfio_unpin_pages() has array of user_pfns as input argument, instead of array of pfns. - On vfio_pin_pages(), pinning happens once. On later call to vfio_pin_pages() with same user_pfn, if iova is found in pfn_list, only ref_count is incremented. - In vfio_unpin_pages(), ref_count is decremented and page is unpinned when ref_count is 0. - For vfio_pin_pages() and vfio_unpin_pages() input array, number of elements in array should be less that PAGE_SIZE. If vendor driver wants to use for more pages, array should be split it in chunks of PAGE_SIZE. - Updating page accounting logic with above changes. Tested by assigning below combinations of devices to a single VM: - GPU pass through only - vGPU device only - One GPU pass through and one vGPU device - Linux VM hot plug and unplug vGPU device while GPU pass through device exist - Linux VM hot plug and unplug GPU pass through device while vGPU device exist Tested with Linux 4.9-rc5 Kirti Wankhede (22): vfio: Mediated device Core driver vfio: VFIO based driver for Mediated devices vfio: Rearrange functions to get vfio_group from dev vfio: Common function to increment container_users vfio iommu: Added pin and unpin callback functions to vfio_iommu_driver_ops vfio iommu type1: Update arguments of vfio_lock_acct vfio iommu type1: Update argument of vaddr_get_pfn() vfio iommu type1: Add find_iommu_group() function vfio iommu type1: Add task structure to vfio_dma vfio iommu type1: Add support for mediated devices vfio iommu: Add blocking notifier to notify DMA_UNMAP vfio: Add notifier callback to parent's ops structure of mdev vfio: Introduce common function to add capabilities vfio_pci: Update vfio_pci to use vfio_info_add_capability() vfio: Introduce vfio_set_irqs_validate_and_prepare() vfio_pci: Updated to use vfio_set_irqs_validate_and_prepare() vfio_platform: Updated to use vfio_set_irqs_validate_and_prepare() vfio: Define device_api strings docs: Add Documentation for Mediated devices docs: Sysfs ABI for mediated device framework docs: Sample driver to demonstrate how to use Mediated device framework. MAINTAINERS: Add entry VFIO based Mediated device drivers Documentation/ABI/testing/sysfs-bus-vfio-mdev | 111 ++ Documentation/vfio-mediated-device.txt | 399 +++++++ MAINTAINERS | 9 + drivers/vfio/Kconfig | 1 + drivers/vfio/Makefile | 1 + drivers/vfio/mdev/Kconfig | 17 + drivers/vfio/mdev/Makefile | 5 + drivers/vfio/mdev/mdev_core.c | 388 +++++++ drivers/vfio/mdev/mdev_driver.c | 120 ++ drivers/vfio/mdev/mdev_private.h | 41 + drivers/vfio/mdev/mdev_sysfs.c | 286 +++++ drivers/vfio/mdev/vfio_mdev.c | 167 +++ drivers/vfio/pci/vfio_pci.c | 83 +- drivers/vfio/platform/vfio_platform_common.c | 31 +- drivers/vfio/vfio.c | 341 +++++- drivers/vfio/vfio_iommu_type1.c | 831 +++++++++++--- include/linux/mdev.h | 177 +++ include/linux/vfio.h | 30 +- include/uapi/linux/vfio.h | 10 + samples/vfio-mdev/Makefile | 13 + samples/vfio-mdev/mtty.c | 1503 +++++++++++++++++++++++++ 21 files changed, 4328 insertions(+), 236 deletions(-) create mode 100644 Documentation/ABI/testing/sysfs-bus-vfio-mdev create mode 100644 Documentation/vfio-mediated-device.txt create mode 100644 drivers/vfio/mdev/Kconfig create mode 100644 drivers/vfio/mdev/Makefile create mode 100644 drivers/vfio/mdev/mdev_core.c create mode 100644 drivers/vfio/mdev/mdev_driver.c create mode 100644 drivers/vfio/mdev/mdev_private.h create mode 100644 drivers/vfio/mdev/mdev_sysfs.c create mode 100644 drivers/vfio/mdev/vfio_mdev.c create mode 100644 include/linux/mdev.h create mode 100644 samples/vfio-mdev/Makefile create mode 100644 samples/vfio-mdev/mtty.c -- 2.7.0
WARNING: multiple messages have this Message-ID (diff)
From: Kirti Wankhede <kwankhede@nvidia.com> To: alex.williamson@redhat.com, pbonzini@redhat.com, kraxel@redhat.com, cjia@nvidia.com Cc: qemu-devel@nongnu.org, kvm@vger.kernel.org, kevin.tian@intel.com, jike.song@intel.com, bjsdjshi@linux.vnet.ibm.com, linux-kernel@vger.kernel.org, Kirti Wankhede <kwankhede@nvidia.com> Subject: [Qemu-devel] [PATCH v12 00/22] Add Mediated device support Date: Mon, 14 Nov 2016 21:12:14 +0530 [thread overview] Message-ID: <1479138156-28905-1-git-send-email-kwankhede@nvidia.com> (raw) This series adds Mediated device support to Linux host kernel. Purpose of this series is to provide a common interface for mediated device management that can be used by different devices. This series introduces Mdev core module that creates and manages mediated devices, VFIO based driver for mediated devices that are created by mdev core module and update VFIO type1 IOMMU module to support pinning & unpinning for mediated devices. What changed v11-> v12? vfio_iommu_type1: - Pinned pages are tracked in vfio_dma structure for that range, dma->iova to dma->iova + dma->size. - Key for pfn_list rb-tree is iova, instead of pfn. - Removing address space structure. vfio_dma keeps task structure, which is used to get mm structure (using get_task_mm(task) and mmput(mm)) for pin/unpin and page accounting. - vfio_unpin_pages() has array of user_pfns as input argument, instead of array of pfns. - On vfio_pin_pages(), pinning happens once. On later call to vfio_pin_pages() with same user_pfn, if iova is found in pfn_list, only ref_count is incremented. - In vfio_unpin_pages(), ref_count is decremented and page is unpinned when ref_count is 0. - For vfio_pin_pages() and vfio_unpin_pages() input array, number of elements in array should be less that PAGE_SIZE. If vendor driver wants to use for more pages, array should be split it in chunks of PAGE_SIZE. - Updating page accounting logic with above changes. Tested by assigning below combinations of devices to a single VM: - GPU pass through only - vGPU device only - One GPU pass through and one vGPU device - Linux VM hot plug and unplug vGPU device while GPU pass through device exist - Linux VM hot plug and unplug GPU pass through device while vGPU device exist Tested with Linux 4.9-rc5 Kirti Wankhede (22): vfio: Mediated device Core driver vfio: VFIO based driver for Mediated devices vfio: Rearrange functions to get vfio_group from dev vfio: Common function to increment container_users vfio iommu: Added pin and unpin callback functions to vfio_iommu_driver_ops vfio iommu type1: Update arguments of vfio_lock_acct vfio iommu type1: Update argument of vaddr_get_pfn() vfio iommu type1: Add find_iommu_group() function vfio iommu type1: Add task structure to vfio_dma vfio iommu type1: Add support for mediated devices vfio iommu: Add blocking notifier to notify DMA_UNMAP vfio: Add notifier callback to parent's ops structure of mdev vfio: Introduce common function to add capabilities vfio_pci: Update vfio_pci to use vfio_info_add_capability() vfio: Introduce vfio_set_irqs_validate_and_prepare() vfio_pci: Updated to use vfio_set_irqs_validate_and_prepare() vfio_platform: Updated to use vfio_set_irqs_validate_and_prepare() vfio: Define device_api strings docs: Add Documentation for Mediated devices docs: Sysfs ABI for mediated device framework docs: Sample driver to demonstrate how to use Mediated device framework. MAINTAINERS: Add entry VFIO based Mediated device drivers Documentation/ABI/testing/sysfs-bus-vfio-mdev | 111 ++ Documentation/vfio-mediated-device.txt | 399 +++++++ MAINTAINERS | 9 + drivers/vfio/Kconfig | 1 + drivers/vfio/Makefile | 1 + drivers/vfio/mdev/Kconfig | 17 + drivers/vfio/mdev/Makefile | 5 + drivers/vfio/mdev/mdev_core.c | 388 +++++++ drivers/vfio/mdev/mdev_driver.c | 120 ++ drivers/vfio/mdev/mdev_private.h | 41 + drivers/vfio/mdev/mdev_sysfs.c | 286 +++++ drivers/vfio/mdev/vfio_mdev.c | 167 +++ drivers/vfio/pci/vfio_pci.c | 83 +- drivers/vfio/platform/vfio_platform_common.c | 31 +- drivers/vfio/vfio.c | 341 +++++- drivers/vfio/vfio_iommu_type1.c | 831 +++++++++++--- include/linux/mdev.h | 177 +++ include/linux/vfio.h | 30 +- include/uapi/linux/vfio.h | 10 + samples/vfio-mdev/Makefile | 13 + samples/vfio-mdev/mtty.c | 1503 +++++++++++++++++++++++++ 21 files changed, 4328 insertions(+), 236 deletions(-) create mode 100644 Documentation/ABI/testing/sysfs-bus-vfio-mdev create mode 100644 Documentation/vfio-mediated-device.txt create mode 100644 drivers/vfio/mdev/Kconfig create mode 100644 drivers/vfio/mdev/Makefile create mode 100644 drivers/vfio/mdev/mdev_core.c create mode 100644 drivers/vfio/mdev/mdev_driver.c create mode 100644 drivers/vfio/mdev/mdev_private.h create mode 100644 drivers/vfio/mdev/mdev_sysfs.c create mode 100644 drivers/vfio/mdev/vfio_mdev.c create mode 100644 include/linux/mdev.h create mode 100644 samples/vfio-mdev/Makefile create mode 100644 samples/vfio-mdev/mtty.c -- 2.7.0
next reply other threads:[~2016-11-14 15:41 UTC|newest] Thread overview: 75+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-11-14 15:42 Kirti Wankhede [this message] 2016-11-14 15:42 ` [Qemu-devel] [PATCH v12 00/22] Add Mediated device support Kirti Wankhede 2016-11-14 15:42 ` [PATCH v12 01/22] vfio: Mediated device Core driver Kirti Wankhede 2016-11-14 15:42 ` [Qemu-devel] " Kirti Wankhede 2016-11-15 8:30 ` Dong Jia Shi 2016-11-15 8:30 ` [Qemu-devel] " Dong Jia Shi 2016-11-15 15:16 ` Kirti Wankhede 2016-11-15 15:16 ` [Qemu-devel] " Kirti Wankhede 2016-11-14 15:42 ` [PATCH v12 02/22] vfio: VFIO based driver for Mediated devices Kirti Wankhede 2016-11-14 15:42 ` [Qemu-devel] " Kirti Wankhede 2016-11-14 15:42 ` [PATCH v12 03/22] vfio: Rearrange functions to get vfio_group from dev Kirti Wankhede 2016-11-14 15:42 ` [Qemu-devel] " Kirti Wankhede 2016-11-14 15:42 ` [PATCH v12 04/22] vfio: Common function to increment container_users Kirti Wankhede 2016-11-14 15:42 ` [Qemu-devel] " Kirti Wankhede 2016-11-14 15:42 ` [PATCH v12 05/22] vfio iommu: Added pin and unpin callback functions to vfio_iommu_driver_ops Kirti Wankhede 2016-11-14 15:42 ` [Qemu-devel] " Kirti Wankhede 2016-11-14 19:43 ` Alex Williamson 2016-11-14 19:43 ` [Qemu-devel] " Alex Williamson 2016-11-15 15:03 ` Kirti Wankhede 2016-11-15 15:03 ` [Qemu-devel] " Kirti Wankhede 2016-11-14 15:42 ` [PATCH v12 06/22] vfio iommu type1: Update arguments of vfio_lock_acct Kirti Wankhede 2016-11-14 15:42 ` [Qemu-devel] " Kirti Wankhede 2016-11-14 15:42 ` Kirti Wankhede 2016-11-14 15:42 ` [PATCH v12 07/22] vfio iommu type1: Update argument of vaddr_get_pfn() Kirti Wankhede 2016-11-14 15:42 ` [Qemu-devel] " Kirti Wankhede 2016-11-14 15:42 ` [PATCH v12 08/22] vfio iommu type1: Add find_iommu_group() function Kirti Wankhede 2016-11-14 15:42 ` [Qemu-devel] " Kirti Wankhede 2016-11-14 15:42 ` [PATCH v12 09/22] vfio iommu type1: Add task structure to vfio_dma Kirti Wankhede 2016-11-14 15:42 ` [Qemu-devel] " Kirti Wankhede 2016-11-15 5:26 ` Alexey Kardashevskiy 2016-11-15 5:26 ` [Qemu-devel] " Alexey Kardashevskiy 2016-11-14 15:42 ` [PATCH v12 10/22] vfio iommu type1: Add support for mediated devices Kirti Wankhede 2016-11-14 15:42 ` [Qemu-devel] " Kirti Wankhede 2016-11-14 23:25 ` Alex Williamson 2016-11-14 23:25 ` [Qemu-devel] " Alex Williamson 2016-11-15 15:09 ` Kirti Wankhede 2016-11-15 15:09 ` [Qemu-devel] " Kirti Wankhede 2016-11-14 15:42 ` [PATCH v12 11/22] vfio iommu: Add blocking notifier to notify DMA_UNMAP Kirti Wankhede 2016-11-14 15:42 ` [Qemu-devel] " Kirti Wankhede 2016-11-14 23:58 ` Alex Williamson 2016-11-14 23:58 ` [Qemu-devel] " Alex Williamson 2016-11-15 15:11 ` Kirti Wankhede 2016-11-15 15:11 ` [Qemu-devel] " Kirti Wankhede 2016-11-14 15:42 ` [PATCH v12 12/22] vfio: Add notifier callback to parent's ops structure of mdev Kirti Wankhede 2016-11-14 15:42 ` [Qemu-devel] " Kirti Wankhede 2016-11-15 6:45 ` Jike Song 2016-11-15 6:45 ` [Qemu-devel] " Jike Song 2016-11-15 8:11 ` Kirti Wankhede 2016-11-15 8:11 ` [Qemu-devel] " Kirti Wankhede 2016-11-15 9:30 ` Jike Song 2016-11-15 9:30 ` [Qemu-devel] " Jike Song 2016-11-15 15:19 ` Alex Williamson 2016-11-15 15:19 ` [Qemu-devel] " Alex Williamson 2016-11-16 5:52 ` Jike Song 2016-11-16 5:52 ` [Qemu-devel] " Jike Song 2016-11-14 15:42 ` [PATCH v12 13/22] vfio: Introduce common function to add capabilities Kirti Wankhede 2016-11-14 15:42 ` [Qemu-devel] " Kirti Wankhede 2016-11-14 15:42 ` [PATCH v12 14/22] vfio_pci: Update vfio_pci to use vfio_info_add_capability() Kirti Wankhede 2016-11-14 15:42 ` [Qemu-devel] " Kirti Wankhede 2016-11-14 15:42 ` [PATCH v12 15/22] vfio: Introduce vfio_set_irqs_validate_and_prepare() Kirti Wankhede 2016-11-14 15:42 ` [Qemu-devel] " Kirti Wankhede 2016-11-14 15:42 ` [PATCH v12 16/22] vfio_pci: Updated to use vfio_set_irqs_validate_and_prepare() Kirti Wankhede 2016-11-14 15:42 ` [Qemu-devel] " Kirti Wankhede 2016-11-14 15:42 ` [PATCH v12 17/22] vfio_platform: " Kirti Wankhede 2016-11-14 15:42 ` [Qemu-devel] " Kirti Wankhede 2016-11-14 15:42 ` [PATCH v12 18/22] vfio: Define device_api strings Kirti Wankhede 2016-11-14 15:42 ` [Qemu-devel] " Kirti Wankhede 2016-11-14 15:42 ` [PATCH v12 19/22] docs: Add Documentation for Mediated devices Kirti Wankhede 2016-11-14 15:42 ` [Qemu-devel] " Kirti Wankhede 2016-11-14 15:42 ` [PATCH v12 20/22] docs: Sysfs ABI for mediated device framework Kirti Wankhede 2016-11-14 15:42 ` [Qemu-devel] " Kirti Wankhede 2016-11-14 15:42 ` [PATCH v12 21/22] docs: Sample driver to demonstrate how to use Mediated " Kirti Wankhede 2016-11-14 15:42 ` [Qemu-devel] " Kirti Wankhede 2016-11-14 15:42 ` [PATCH v12 22/22] MAINTAINERS: Add entry VFIO based Mediated device drivers Kirti Wankhede 2016-11-14 15:42 ` [Qemu-devel] " Kirti Wankhede
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