[PULL][Disco] non-strict iommu mode for ARM

[dann frazier]

BugLink: https://bugs.launchpad.net/bugs/1806488

All clean cherry picks from upstream.

The following changes since commit 88a0ffaf616b51e1d22d58a769d4315dad7a62dd:

  UBUNTU: Ubuntu-4.19.0-9.10 (2018-12-10 15:52:38 -0600)

are available in the Git repository at:

  git://git.launchpad.net/~dannf/ubuntu/+source/linux/+git/linux iommu-non-strict-disco

for you to fetch changes up to 68f66f8f7c587ae30320d970979a88be1e80abba:

  iommu/arm-smmu: Support non-strict mode (2018-12-13 13:59:58 -0700)

----------------------------------------------------------------
Robin Murphy (3):
      iommu/io-pgtable-arm: Fix race handling in split_blk_unmap()
      iommu/io-pgtable-arm-v7s: Add support for non-strict mode
      iommu/arm-smmu: Support non-strict mode

Zhen Lei (5):
      iommu/arm-smmu-v3: Implement flush_iotlb_all hook
      iommu/dma: Add support for non-strict mode
      iommu: Add "iommu.strict" command line option
      iommu/io-pgtable-arm: Add support for non-strict mode
      iommu/arm-smmu-v3: Add support for non-strict mode

 Documentation/admin-guide/kernel-parameters.txt | 12 ++++
 drivers/iommu/arm-smmu-v3.c                     | 89 ++++++++++++++++-------
 drivers/iommu/arm-smmu.c                        | 93 ++++++++++++++++++-------
 drivers/iommu/dma-iommu.c                       | 32 ++++++++-
 drivers/iommu/io-pgtable-arm-v7s.c              | 11 ++-
 drivers/iommu/io-pgtable-arm.c                  | 23 ++++--
 drivers/iommu/io-pgtable.h                      |  5 ++
 drivers/iommu/iommu.c                           | 14 ++++
 include/linux/iommu.h                           |  1 +
 9 files changed, 220 insertions(+), 60 deletions(-)