Hi Linus, The following changes since commit 6eaae198076080886b9e7d57f4ae06fa782f90ef: Linux 6.5-rc3 (2023-07-23 15:24:10 -0700) are available in the Git repository at: https://github.com/awilliam/linux-vfio.git tags/vfio-v6.6-rc1 for you to fetch changes up to 642265e22ecc7fe05c49cb8e1e0000a049df9857: vfio/pds: Send type for SUSPEND_STATUS command (2023-08-22 13:11:57 -0600) ---------------------------------------------------------------- VFIO updates for v6.6-rc1 - VFIO direct character device (cdev) interface support. This extracts the vfio device fd from the container and group model, and is intended to be the native uAPI for use with IOMMUFD. (Yi Liu) - Enhancements to the PCI hot reset interface in support of cdev usage. (Yi Liu) - Fix a potential race between registering and unregistering vfio files in the kvm-vfio interface and extend use of a lock to avoid extra drop and acquires. (Dmitry Torokhov) - A new vfio-pci variant driver for the AMD/Pensando Distributed Services Card (PDS) Ethernet device, supporting live migration. (Brett Creeley) - Cleanups to remove redundant owner setup in cdx and fsl bus drivers, and simplify driver init/exit in fsl code. (Li Zetao) - Fix uninitialized hole in data structure and pad capability structures for alignment. (Stefan Hajnoczi) ---------------------------------------------------------------- Brett Creeley (10): vfio: Commonize combine_ranges for use in other VFIO drivers vfio/pds: Initial support for pds VFIO driver pds_core: Require callers of register/unregister to pass PF drvdata vfio/pds: register with the pds_core PF vfio/pds: Add VFIO live migration support vfio/pds: Add support for dirty page tracking vfio/pds: Add support for firmware recovery vfio/pds: Add Kconfig and documentation pds_core: Fix function header descriptions vfio/pds: Send type for SUSPEND_STATUS command Dmitry Torokhov (2): kvm/vfio: ensure kvg instance stays around in kvm_vfio_group_add() kvm/vfio: avoid bouncing the mutex when adding and deleting groups Li Zetao (2): vfio/cdx: Remove redundant initialization owner in vfio_cdx_driver vfio/fsl-mc: Use module_fsl_mc_driver macro to simplify the code Nicolin Chen (1): iommufd/device: Add iommufd_access_detach() API Stefan Hajnoczi (2): vfio/type1: fix cap_migration information leak vfio: align capability structures Yang Yingliang (1): vfio/pds: fix return value in pds_vfio_get_lm_file() Yi Liu (35): vfio/pci: Update comment around group_fd get in vfio_pci_ioctl_pci_hot_reset() vfio/pci: Move the existing hot reset logic to be a helper iommufd: Reserve all negative IDs in the iommufd xarray iommufd: Add iommufd_ctx_has_group() iommufd: Add helper to retrieve iommufd_ctx and devid vfio: Mark cdev usage in vfio_device vfio: Add helper to search vfio_device in a dev_set vfio/pci: Extend VFIO_DEVICE_GET_PCI_HOT_RESET_INFO for vfio device cdev vfio/pci: Copy hot-reset device info to userspace in the devices loop vfio/pci: Allow passing zero-length fd array in VFIO_DEVICE_PCI_HOT_RESET vfio: Allocate per device file structure vfio: Refine vfio file kAPIs for KVM vfio: Accept vfio device file in the KVM facing kAPI kvm/vfio: Prepare for accepting vfio device fd kvm/vfio: Accept vfio device file from userspace vfio: Pass struct vfio_device_file * to vfio_device_open/close() vfio: Block device access via device fd until device is opened vfio: Add cdev_device_open_cnt to vfio_group vfio: Make vfio_df_open() single open for device cdev path vfio-iommufd: Move noiommu compat validation out of vfio_iommufd_bind() vfio-iommufd: Split bind/attach into two steps vfio: Record devid in vfio_device_file vfio-iommufd: Add detach_ioas support for physical VFIO devices vfio-iommufd: Add detach_ioas support for emulated VFIO devices vfio: Move vfio_device_group_unregister() to be the first operation in unregister vfio: Move device_del() before waiting for the last vfio_device registration refcount vfio: Add cdev for vfio_device vfio: Test kvm pointer in _vfio_device_get_kvm_safe() iommufd: Add iommufd_ctx_from_fd() vfio: Avoid repeated user pointer cast in vfio_device_fops_unl_ioctl() vfio: Add VFIO_DEVICE_BIND_IOMMUFD vfio: Add VFIO_DEVICE_[AT|DE]TACH_IOMMUFD_PT vfio: Move the IOMMU_CAP_CACHE_COHERENCY check in __vfio_register_dev() vfio: Compile vfio_group infrastructure optionally docs: vfio: Add vfio device cdev description Documentation/driver-api/vfio.rst | 147 +++++- .../device_drivers/ethernet/amd/pds_vfio_pci.rst | 79 +++ .../networking/device_drivers/ethernet/index.rst | 1 + Documentation/virt/kvm/devices/vfio.rst | 47 +- MAINTAINERS | 7 + drivers/gpu/drm/i915/gvt/kvmgt.c | 1 + drivers/iommu/iommufd/Kconfig | 4 +- drivers/iommu/iommufd/device.c | 116 ++++- drivers/iommu/iommufd/iommufd_private.h | 2 + drivers/iommu/iommufd/main.c | 26 +- drivers/iommu/iommufd/vfio_compat.c | 2 + drivers/net/ethernet/amd/pds_core/auxbus.c | 24 +- drivers/s390/cio/vfio_ccw_ops.c | 1 + drivers/s390/crypto/vfio_ap_ops.c | 1 + drivers/vfio/Kconfig | 27 + drivers/vfio/Makefile | 3 +- drivers/vfio/cdx/main.c | 1 - drivers/vfio/device_cdev.c | 228 +++++++++ drivers/vfio/fsl-mc/vfio_fsl_mc.c | 15 +- drivers/vfio/group.c | 173 ++++--- drivers/vfio/iommufd.c | 138 +++-- drivers/vfio/pci/Kconfig | 2 + drivers/vfio/pci/Makefile | 2 + drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c | 2 + drivers/vfio/pci/mlx5/cmd.c | 48 +- drivers/vfio/pci/mlx5/main.c | 1 + drivers/vfio/pci/pds/Kconfig | 19 + drivers/vfio/pci/pds/Makefile | 11 + drivers/vfio/pci/pds/cmds.c | 510 +++++++++++++++++++ drivers/vfio/pci/pds/cmds.h | 25 + drivers/vfio/pci/pds/dirty.c | 564 +++++++++++++++++++++ drivers/vfio/pci/pds/dirty.h | 39 ++ drivers/vfio/pci/pds/lm.c | 434 ++++++++++++++++ drivers/vfio/pci/pds/lm.h | 41 ++ drivers/vfio/pci/pds/pci_drv.c | 209 ++++++++ drivers/vfio/pci/pds/pci_drv.h | 9 + drivers/vfio/pci/pds/vfio_dev.c | 227 +++++++++ drivers/vfio/pci/pds/vfio_dev.h | 39 ++ drivers/vfio/pci/vfio_pci.c | 1 + drivers/vfio/pci/vfio_pci_core.c | 261 ++++++---- drivers/vfio/platform/vfio_amba.c | 1 + drivers/vfio/platform/vfio_platform.c | 1 + drivers/vfio/vfio.h | 218 +++++++- drivers/vfio/vfio_iommu_type1.c | 13 +- drivers/vfio/vfio_main.c | 307 ++++++++++- include/linux/iommufd.h | 7 + include/linux/pds/pds_adminq.h | 375 ++++++++++++++ include/linux/pds/pds_common.h | 9 +- include/linux/vfio.h | 69 ++- include/uapi/linux/kvm.h | 13 +- include/uapi/linux/vfio.h | 144 +++++- samples/vfio-mdev/mbochs.c | 1 + samples/vfio-mdev/mdpy.c | 1 + samples/vfio-mdev/mtty.c | 1 + virt/kvm/vfio.c | 161 +++--- 55 files changed, 4350 insertions(+), 458 deletions(-) create mode 100644 Documentation/networking/device_drivers/ethernet/amd/pds_vfio_pci.rst create mode 100644 drivers/vfio/device_cdev.c create mode 100644 drivers/vfio/pci/pds/Kconfig create mode 100644 drivers/vfio/pci/pds/Makefile create mode 100644 drivers/vfio/pci/pds/cmds.c create mode 100644 drivers/vfio/pci/pds/cmds.h create mode 100644 drivers/vfio/pci/pds/dirty.c create mode 100644 drivers/vfio/pci/pds/dirty.h create mode 100644 drivers/vfio/pci/pds/lm.c create mode 100644 drivers/vfio/pci/pds/lm.h create mode 100644 drivers/vfio/pci/pds/pci_drv.c create mode 100644 drivers/vfio/pci/pds/pci_drv.h create mode 100644 drivers/vfio/pci/pds/vfio_dev.c create mode 100644 drivers/vfio/pci/pds/vfio_dev.h
