Merge tag 'vfio-v6.18-rc4' of https://github.com/awilliam/linux-vfio

Pull VFIO fixes from Alex Williamson:

 - Fix overflows in vfio type1 backend for mappings at the end of the
   64-bit address space, resulting in leaked pinned memory.

   New selftest support included to avoid such issues in the future
   (Alex Mastro)

* tag 'vfio-v6.18-rc4' of https://github.com/awilliam/linux-vfio:
  vfio: selftests: add end of address space DMA map/unmap tests
  vfio: selftests: update DMA map/unmap helpers to support more test kinds
  vfio/type1: handle DMA map/unmap up to the addressable limit
  vfio/type1: move iova increment to unmap_unpin_*() caller
  vfio/type1: sanitize for overflow using check_*_overflow()

Author: torvalds