Merge tag 'iommu-fixes-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull iommu fixes from Joerg Roedel:
 "A couple of fixes for the AMD IOMMU driver have piled up:

   - Some fixes for the reworked IO page-table which caused memory leaks
     or did not allow to downgrade mappings under some conditions.

   - Locking fixes to fix a couple of possible races around accessing
     'struct protection_domain'. The races got introduced when the
     dma-ops path became lock-less in the fast-path"

* tag 'iommu-fixes-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/amd: Lock code paths traversing protection_domain->dev_list
  iommu/amd: Lock dev_data in attach/detach code paths
  iommu/amd: Check for busy devices earlier in attach_device()
  iommu/amd: Take domain->lock for complete attach/detach path
  iommu/amd: Remove amd_iommu_devtable_lock
  iommu/amd: Remove domain->updated
  iommu/amd: Wait for completion of IOTLB flush in attach_device
  iommu/amd: Unmap all L7 PTEs when downgrading page-sizes
  iommu/amd: Introduce first_pte_l7() helper
  iommu/amd: Fix downgrading default page-sizes in alloc_pte()
  iommu/amd: Fix pages leak in free_pagetable()

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