Merge tag 'dma-mapping-4.16' of git://git.infradead.org/users/hch/dma-mapping

Pull dma mapping updates from Christoph Hellwig:
 "Except for a runtime warning fix from Christian this is all about
  consolidation of the generic no-IOMMU code, a well as the glue code
  for swiotlb.

  All the code is based on the x86 implementation with hooks to allow
  all architectures that aren't cache coherent to use it.

  The x86 conversion itself has been deferred because the x86
  maintainers were a little busy in the last months"

* tag 'dma-mapping-4.16' of git://git.infradead.org/users/hch/dma-mapping: (57 commits)
  MAINTAINERS: add the iommu list for swiotlb and xen-swiotlb
  arm64: use swiotlb_alloc and swiotlb_free
  arm64: replace ZONE_DMA with ZONE_DMA32
  mips: use swiotlb_{alloc,free}
  mips/netlogic: remove swiotlb support
  tile: use generic swiotlb_ops
  tile: replace ZONE_DMA with ZONE_DMA32
  unicore32: use generic swiotlb_ops
  ia64: remove an ifdef around the content of pci-dma.c
  ia64: clean up swiotlb support
  ia64: use generic swiotlb_ops
  ia64: replace ZONE_DMA with ZONE_DMA32
  swiotlb: remove various exports
  swiotlb: refactor coherent buffer allocation
  swiotlb: refactor coherent buffer freeing
  swiotlb: wire up ->dma_supported in swiotlb_dma_ops
  swiotlb: add common swiotlb_map_ops
  swiotlb: rename swiotlb_free to swiotlb_exit
  x86: rename swiotlb_dma_ops
  powerpc: rename swiotlb_dma_ops
  ...

diff --cc MAINTAINERS
Simple merge

diff --cc arch/Kconfig
Simple merge

diff --cc arch/arm64/Kconfig
Simple merge

diff --cc arch/arm64/mm/init.c
Simple merge

diff --cc arch/ia64/Kconfig
Simple merge

diff --cc arch/mips/Kconfig
Simple merge

diff --cc arch/powerpc/Kconfig
Simple merge

diff --cc arch/powerpc/kernel/setup-common.c
Simple merge

diff --cc arch/x86/Kconfig
index 423e4b6,f6f4328..dbe5542
--- 1/arch/x86/Kconfig
--- 2/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@@ -54,7 -54,9 +54,8 @@@ config X8
        select ARCH_HAS_FORTIFY_SOURCE
        select ARCH_HAS_GCOV_PROFILE_ALL
        select ARCH_HAS_KCOV                    if X86_64
+       select ARCH_HAS_PHYS_TO_DMA
        select ARCH_HAS_PMEM_API                if X86_64
 -      # Causing hangs/crashes, see the commit that added this change for details.
        select ARCH_HAS_REFCOUNT
        select ARCH_HAS_UACCESS_FLUSHCACHE      if X86_64
        select ARCH_HAS_SET_MEMORY

diff --cc arch/x86/mm/mem_encrypt.c
Simple merge

diff --cc drivers/mtd/nand/qcom_nandc.c
Simple merge

diff --cc lib/Kconfig
index 4dd5c11,9d3d649..e960894
--- 1/lib/Kconfig
--- 2/lib/Kconfig
+++ b/lib/Kconfig
@@@ -409,11 -409,7 +409,11 @@@ config HAS_DM
        depends on !NO_DMA
        default y
  
- config DMA_NOOP_OPS
 +config SGL_ALLOC
 +      bool
 +      default n
 +
+ config DMA_DIRECT_OPS
        bool
        depends on HAS_DMA && (!64BIT || ARCH_DMA_ADDR_T_64BIT)
        default n