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85e0d1de36
Pull iommufd updates from Jason Gunthorpe:
"One small feature this cycle, the noiommu mode is useful in
single-purpose VMs running something like DPDK. It avoids the double
translation overhead and it seems to be commonly used with some hacks.
Summary:
- Formal API for "no iommu" mode in VFIO. iommufd now works in this
environment and provides page pinning and phyiscal address services
to userspace. This avoids nasty fragile tricks with mprotect and
pgmap
- Fix sykzaller crash racing change_process with map_pages
- Various skyzkaller/AI fixes for the selftests"
* tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd:
iommufd: Fix UAF in selftest IOPF reporting
iommu/iommufd: Fix NULL pointer deref in iommufd_ioas_change_process when racing with iopt_map_file_pages
Documentation: Update VFIO NOIOMMU mode
vfio: Enable cdev noiommu mode under iommufd
iommufd: Add an ioctl to query PA from IOVA for noiommu mode
iommufd: Allow binding to a noiommu device
iommufd: Move igroup allocation to a function
iommufd: Support a HWPT without an iommu driver for noiommu
iommufd: Simplify iommufd_device_remove_vdev()
iommufd: Fix grammar and spelling in comments
iommu: Fix dev_iommu memory leak when device_add fails in iommu_mock_device_add
iommufd/selftest: Fix dmabuf leak in iommufd_test_dmabuf_get()
iommufd/selftest: Avoid selftest dirty bitmap size wrap