[GIT PULL] VFIO updates for v6.17-rc1

[Alex Williamson <alex.williamson@redhat.com>]

Hi Linus,

The following changes since commit d7b8f8e20813f0179d8ef519541a3527e7661d3a:

  Linux 6.16-rc5 (2025-07-06 14:10:26 -0700)

are available in the Git repository at:

  https://github.com/awilliam/linux-vfio.git tags/vfio-v6.17-rc1

for you to fetch changes up to d2272d898186fa96c6fa4ad067219b45b8c2ef5f:

  vfio/type1: correct logic of vfio_find_vpfn() (2025-07-27 08:20:31 -0600)

----------------------------------------------------------------
VFIO updates for v6.17-rc1

 - Fix imbalance where the no-iommu/cdev device path skips too much
   on open, failing to increment a reference, but still decrements
   the reference on close.  Add bounds checking to prevent such
   underflows. (Jacob Pan)

 - Fill missing detach_ioas op for pds_vfio_pci, fixing probe failure
   when used with IOMMUFD. (Brett Creeley)

 - Split SR-IOV VFs to separate dev_set, avoiding unnecessary
   serialization between VFs that appear on the same bus.
   (Alex Williamson)

 - Fix a theoretical integer overflow is the mlx5-vfio-pci variant
   driver. (Artem Sadovnikov)

 - Use batching on contiguous pages to significantly improve DMA map
   and unmap performance when using hugetlbfs or THP backed memory
   with the legacy vfio type1 IOMMU backend. (Li Zhe)

 - Implement missing VF token checking support via vfio cdev/IOMMUFD
   interface. (Jason Gunthorpe)

 - Update QAT vfio-pci variant driver to claim latest VF devices.
   (Małgorzata Mielnik)

 - Add a cond_resched() call to avoid holding the CPU too long during
   DMA mapping operations. (Keith Busch)

----------------------------------------------------------------
Alex Williamson (1):
      vfio/pci: Separate SR-IOV VF dev_set

Artem Sadovnikov (1):
      vfio/mlx5: fix possible overflow in tracking max message size

Brett Creeley (1):
      vfio/pds: Fix missing detach_ioas op

Jacob Pan (2):
      vfio: Fix unbalanced vfio_df_close call in no-iommu mode
      vfio: Prevent open_count decrement to negative

Jason Gunthorpe (1):
      vfio/pci: Do vf_token checks for VFIO_DEVICE_BIND_IOMMUFD

Keith Busch (1):
      vfio/type1: conditional rescheduling while pinning

Li Zhe (6):
      mm: introduce num_pages_contiguous()
      vfio/type1: optimize vfio_pin_pages_remote()
      vfio/type1: batch vfio_find_vpfn() in function vfio_unpin_pages_remote()
      vfio/type1: introduce a new member has_rsvd for struct vfio_dma
      vfio/type1: optimize vfio_unpin_pages_remote()
      vfio/type1: correct logic of vfio_find_vpfn()

Małgorzata Mielnik (1):
      vfio/qat: add support for intel QAT 6xxx virtual functions

Xin Zeng (1):
      vfio/qat: Remove myself from VFIO QAT PCI driver maintainers

 MAINTAINERS                                    |   1 -
 drivers/vfio/device_cdev.c                     |  38 +++++++-
 drivers/vfio/group.c                           |   7 +-
 drivers/vfio/iommufd.c                         |   4 +
 drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c |   1 +
 drivers/vfio/pci/mlx5/cmd.c                    |   4 +-
 drivers/vfio/pci/mlx5/main.c                   |   1 +
 drivers/vfio/pci/nvgrace-gpu/main.c            |   2 +
 drivers/vfio/pci/pds/vfio_dev.c                |   2 +
 drivers/vfio/pci/qat/main.c                    |   5 +-
 drivers/vfio/pci/vfio_pci.c                    |   1 +
 drivers/vfio/pci/vfio_pci_core.c               |  24 +++--
 drivers/vfio/pci/virtio/main.c                 |   3 +
 drivers/vfio/vfio_iommu_type1.c                | 118 ++++++++++++++++++++-----
 drivers/vfio/vfio_main.c                       |   3 +-
 include/linux/mm.h                             |  23 +++++
 include/linux/vfio.h                           |   4 +
 include/linux/vfio_pci_core.h                  |   2 +
 include/uapi/linux/vfio.h                      |  12 ++-
 19 files changed, 212 insertions(+), 43 deletions(-)