[PULL][SRU Bionic] non-strict iommu mode for ARM

[dann frazier]

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

Required some minor backporting (same as for cosmic), described in the
S-o-b area.

The following changes since commit 9f3c41672a4f2488bf85ac6b88394ef861dbc333:

  UBUNTU: Ubuntu-4.15.0-43.46 (2018-12-06 13:52:12 +0000)

are available in the Git repository at:

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

for you to fetch changes up to 64d6553a0188e8d01e8940fe2e216b3613b62025:

  iommu/arm-smmu: Support non-strict mode (2018-12-19 17:04:16 -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(-)