Merge tag 'vfio-v7.1-rc1-pt2' of https://github.com/awilliam/linux-vfio

Pull more VFIO updates from Alex Williamson:

 - Fix ordering of dma-buf cleanup versus device disabling in vfio-pci
   (Matt Evans)

 - Resolve an inconsistent and incorrect use of spinlock-irq in the
   virtio vfio-pci variant by conversion to mutex and proceed to
   modernize and simplify driver with use of guards (Alex Williamson)

 - Resurrect the removal of the remaining class_create() call in vfio,
   replacing with const struct class and class_register() (Jori
   Koolstra, Alex Williamson)

 - Fix NULL pointer dereference, properly serialize interrupt setup, and
   cleanup interrupt state tracking in the cdx vfio bus driver (Prasanna
   Kumar T S M, Alex Williamson)

* tag 'vfio-v7.1-rc1-pt2' of https://github.com/awilliam/linux-vfio:
  vfio/cdx: Consolidate MSI configured state onto cdx_irqs
  vfio/cdx: Serialize VFIO_DEVICE_SET_IRQS with a per-device mutex
  vfio/cdx: Fix NULL pointer dereference in interrupt trigger path
  vfio: replace vfio->device_class with a const struct class
  vfio/virtio: Use guard() for bar_mutex in legacy I/O
  vfio/virtio: Use guard() for migf->lock where applicable
  vfio/virtio: Use guard() for list_lock where applicable
  vfio/virtio: Convert list_lock from spinlock to mutex
  vfio/pci: Clean up DMABUFs before disabling function