Pull IOMMU updates from Alex Williamson:
 "As Joerg mentioned[1], he's out on paternity leave through the end of
  the year and I'm filling in for him in the interim:

   - Enforce MSI multiple IRQ alignment in AMD IOMMU

   - VT-d PASID error handling fixes

   - Add r8a7795 IPMMU support

   - Manage runtime PM links on exynos at {add,remove}_device callbacks

   - Fix Mediatek driver name to avoid conflict

   - Add terminate support to qcom fault handler

   - 64-bit IOVA optimizations

   - Simplfy IOVA domain destruction, better use of rcache, and skip
     anchor nodes on copy

   - Convert to IOMMU TLB sync API in io-pgtable-arm{-v7s}

   - Drop command queue lock when waiting for CMD_SYNC completion on ARM
     SMMU implementations supporting MSI to cacheable memory

   - iomu-vmsa cleanup inspired by missed IOTLB sync callbacks

   - Fix sleeping lock with preemption disabled for RT

   - Dual MMU support for TI DRA7xx DSPs

   - Optional flush option on IOVA allocation avoiding overhead when
     caller can try other options

  [1] https://lkml.org/lkml/2017/10/22/72"

* tag 'iommu-v4.15-rc1' of git://github.com/awilliam/linux-vfio: (54 commits)
  iommu/iova: Use raw_cpu_ptr() instead of get_cpu_ptr() for ->fq
  iommu/mediatek: Fix driver name
  iommu/ipmmu-vmsa: Hook up r8a7795 DT matching code
  iommu/ipmmu-vmsa: Allow two bit SL0
  iommu/ipmmu-vmsa: Make IMBUSCTR setup optional
  iommu/ipmmu-vmsa: Write IMCTR twice
  iommu/ipmmu-vmsa: IPMMU device is 40-bit bus master
  iommu/ipmmu-vmsa: Make use of IOMMU_OF_DECLARE()
  iommu/ipmmu-vmsa: Enable multi context support
  iommu/ipmmu-vmsa: Add optional root device feature
  iommu/ipmmu-vmsa: Introduce features, break out alias
  iommu/ipmmu-vmsa: Unify ipmmu_ops
  iommu/ipmmu-vmsa: Clean up struct ipmmu_vmsa_iommu_priv
  iommu/ipmmu-vmsa: Simplify group allocation
  iommu/ipmmu-vmsa: Unify domain alloc/free
  iommu/ipmmu-vmsa: Fix return value check in ipmmu_find_group_dma()
  iommu/vt-d: Clear pasid table entry when memory unbound
  iommu/vt-d: Clear Page Request Overflow fault bit
  iommu/vt-d: Missing checks for pasid tables if allocation fails
  iommu/amd: Limit the IOVA page range to the specified addresses
  ...