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Date:   Wed, 16 Dec 2020 18:53:53 +0000
From:   Will Deacon <will@...nel.org>
To:     torvalds@...ux-foundation.org
Cc:     iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        Joerg Roedel <joro@...tes.org>,
        Alex Williamson <alex.williamson@...hat.com>,
        Robin Murphy <robin.murphy@....com>,
        Lu Baolu <baolu.lu@...ux.intel.com>, kernel-team@...roid.com
Subject: Re: [GIT PULL] IOMMU updates for 5.11

Hi again, Linus,

On Mon, Dec 14, 2020 at 11:45:18PM +0000, Will Deacon wrote:
> Hi Linus,
> 
> Please pull these IOMMU updates for 5.11: there's a good mixture of
> improvements to the core code and driver changes across the board.
> Summary in the tag and merge commits.
> 
> One thing worth pointing out is that this includes a quirk to work
> around behaviour in the i915 driver (see 65f746e8285f ("iommu: Add quirk
> for Intel graphic devices in map_sg")), which otherwise interacts badly
> with the conversion of the intel IOMMU driver over to the DMA-IOMMU APU
> but has being fixed properly in the DRM tree. We'll revert the quirk
> later this cycle once we've confirmed that things don't fall apart
> without it.

I'm hoping to wind down a bit next week (ho ho ho), so I just wanted to
check whether this had got caught in your spam filters, whether you wanted
me to change something or whether you're just snowed under in pull requests.

Cheers,

Will

> --->8
> 
> The following changes since commit 4165bf015ba9454f45beaad621d16c516d5c5afe:
> 
>   iommu/amd: Set DTE[IntTabLen] to represent 512 IRTEs (2020-12-07 11:00:24 +0000)
> 
> are available in the Git repository at:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git tags/iommu-updates-v5.11
> 
> for you to fetch changes up to 5ae9a046a452d60b6a6c076f6df7e3f8e34f918f:
> 
>   iommu/amd: Add sanity check for interrupt remapping table length macros (2020-12-11 12:47:22 +0000)
> 
> ----------------------------------------------------------------
> IOMMU updates for 5.11
> 
> - IOVA allocation optimisations and removal of unused code
> 
> - Introduction of DOMAIN_ATTR_IO_PGTABLE_CFG for parameterising the
>   page-table of an IOMMU domain
> 
> - Support for changing the default domain type in sysfs
> 
> - Optimisation to the way in which identity-mapped regions are created
> 
> - Driver updates:
>   * Arm SMMU updates, including continued work on Shared Virtual Memory
>   * Tegra SMMU updates, including support for PCI devices
>   * Intel VT-D updates, including conversion to the IOMMU-DMA API
> 
> - Cleanup, kerneldoc and minor refactoring
> 
> ----------------------------------------------------------------
> Bjorn Andersson (3):
>       iommu/arm-smmu: Allow implementation specific write_s2cr
>       iommu/arm-smmu-qcom: Read back stream mappings
>       iommu/arm-smmu-qcom: Implement S2CR quirk
> 
> Chen Jun (1):
>       iommu: Modify the description of iommu_sva_unbind_device
> 
> Christoph Hellwig (1):
>       dma-iommu: remove __iommu_dma_mmap
> 
> Christophe JAILLET (1):
>       iommu/vt-d: Avoid GFP_ATOMIC where it is not needed
> 
> Cong Wang (1):
>       iommu: avoid taking iova_rbtree_lock twice
> 
> Jean-Philippe Brucker (4):
>       iommu/ioasid: Add ioasid references
>       iommu/sva: Add PASID helpers
>       iommu/arm-smmu-v3: Implement iommu_sva_bind/unbind()
>       iommu/arm-smmu-v3: Hook up ATC invalidation to mm ops
> 
> John Garry (3):
>       iommu: Delete split_and_remove_iova()
>       iommu: Stop exporting alloc_iova_mem()
>       iommu: Stop exporting free_iova_mem()
> 
> Jordan Crouse (2):
>       iommu/arm-smmu-qcom: Add implementation for the adreno GPU SMMU
>       dt-bindings: arm-smmu: Add compatible string for Adreno GPU SMMU
> 
> Kaixu Xia (1):
>       iommu/arm-smmu-v3: Assign boolean values to a bool variable
> 
> Keqian Zhu (1):
>       iommu: Defer the early return in arm_(v7s/lpae)_map
> 
> Kunkun Jiang (1):
>       iommu/io-pgtable-arm: Remove unused 'level' parameter from iopte_type() macro
> 
> Lu Baolu (6):
>       iommu: Add quirk for Intel graphic devices in map_sg
>       iommu/vt-d: Update domain geometry in iommu_ops.at(de)tach_dev
>       iommu/vt-d: Cleanup after converting to dma-iommu ops
>       iommu: Move def_domain type check for untrusted device into core
>       iommu: Fix htmldocs warnings in sysfs-kernel-iommu_groups
>       iommu/vt-d: Remove set but not used variable
> 
> Lukas Bulwahn (1):
>       iommu/vt-d: include conditionally on CONFIG_INTEL_IOMMU_SVM
> 
> Nicolin Chen (5):
>       iommu/tegra-smmu: Unwrap tegra_smmu_group_get
>       iommu/tegra-smmu: Expand mutex protection range
>       iommu/tegra-smmu: Use fwspec in tegra_smmu_(de)attach_dev
>       iommu/tegra-smmu: Rework tegra_smmu_probe_device()
>       iommu/tegra-smmu: Add PCI support
> 
> Rob Clark (1):
>       iommu/arm-smmu: Add a way for implementations to influence SCTLR
> 
> Robin Murphy (2):
>       iommu/arm-smmu: Use new devm_krealloc()
>       iommu/io-pgtable: Remove tlb_flush_leaf
> 
> Sai Prakash Ranjan (4):
>       iommu/arm-smmu: Add support for pagetable config domain attribute
>       iommu/arm-smmu: Move non-strict mode to use io_pgtable_domain_attr
>       iommu: arm-smmu-impl: Use table to list QCOM implementations
>       iommu: arm-smmu-impl: Add a space before open parenthesis
> 
> Sai Praneeth Prakhya (3):
>       iommu: Add support to change default domain of an iommu group
>       iommu: Take lock before reading iommu group default domain type
>       iommu: Document usage of "/sys/kernel/iommu_groups/<grp_id>/type" file
> 
> Suravee Suthikulpanit (1):
>       iommu/amd: Add sanity check for interrupt remapping table length macros
> 
> Tom Murphy (4):
>       iommu: Handle freelists when using deferred flushing in iommu drivers
>       iommu: Add iommu_dma_free_cpu_cached_iovas()
>       iommu: Allow the dma-iommu api to use bounce buffers
>       iommu/vt-d: Convert intel iommu driver to the iommu ops
> 
> Vijayanand Jitta (2):
>       iommu/iova: Retry from last rb tree node if iova search fails
>       iommu/iova: Free global iova rcache on iova alloc failure
> 
> Will Deacon (10):
>       Merge branch 'stable/for-linus-5.10-rc2' of git://git.kernel.org/.../konrad/swiotlb into for-next/iommu/vt-d
>       Merge branch 'for-next/iommu/io-pgtable-domain-attr' into for-next/iommu/arm-smmu
>       Merge branch 'for-next/iommu/arm-smmu' into for-next/iommu/core
>       Merge branch 'for-next/iommu/default-domains' into for-next/iommu/core
>       Merge branch 'for-next/iommu/iova' into for-next/iommu/core
>       Merge branch 'for-next/iommu/misc' into for-next/iommu/core
>       Merge branch 'for-next/iommu/svm' into for-next/iommu/core
>       Merge branch 'for-next/iommu/tegra-smmu' into for-next/iommu/core
>       Merge branch 'for-next/iommu/vt-d' into for-next/iommu/core
>       Merge branch 'for-next/iommu/fixes' into for-next/iommu/core
> 
> Yang Yingliang (1):
>       iommu: return error code when it can't get group
> 
> Yong Wu (1):
>       iommu: Improve the performance for direct_mapping
> 
>  .../ABI/testing/sysfs-kernel-iommu_groups          |  30 +
>  Documentation/admin-guide/kernel-parameters.txt    |   5 -
>  .../devicetree/bindings/iommu/arm,smmu.yaml        |   9 +-
>  drivers/gpu/drm/msm/msm_iommu.c                    |   1 -
>  drivers/gpu/drm/panfrost/panfrost_mmu.c            |   7 -
>  drivers/iommu/Kconfig                              |   7 +
>  drivers/iommu/Makefile                             |   1 +
>  drivers/iommu/amd/amd_iommu_types.h                |  19 +-
>  drivers/iommu/amd/init.c                           |   6 +-
>  drivers/iommu/amd/iommu.c                          |   2 +-
>  drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c    | 244 +++++-
>  drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c        |  59 +-
>  drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h        |  30 +
>  drivers/iommu/arm/arm-smmu/arm-smmu-impl.c         |  13 +-
>  drivers/iommu/arm/arm-smmu/arm-smmu-nvidia.c       |  17 +-
>  drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c         | 270 +++++-
>  drivers/iommu/arm/arm-smmu/arm-smmu.c              |  76 +-
>  drivers/iommu/arm/arm-smmu/arm-smmu.h              |   5 +-
>  drivers/iommu/arm/arm-smmu/qcom_iommu.c            |   8 -
>  drivers/iommu/dma-iommu.c                          | 244 +++++-
>  drivers/iommu/intel/Kconfig                        |   1 +
>  drivers/iommu/intel/iommu.c                        | 919 +++------------------
>  drivers/iommu/intel/svm.c                          |   6 +-
>  drivers/iommu/io-pgtable-arm-v7s.c                 |  11 +-
>  drivers/iommu/io-pgtable-arm.c                     |  29 +-
>  drivers/iommu/ioasid.c                             |  38 +-
>  drivers/iommu/iommu-sva-lib.c                      |  86 ++
>  drivers/iommu/iommu-sva-lib.h                      |  15 +
>  drivers/iommu/iommu.c                              | 276 ++++++-
>  drivers/iommu/iova.c                               | 100 ++-
>  drivers/iommu/ipmmu-vmsa.c                         |   1 -
>  drivers/iommu/msm_iommu.c                          |   7 -
>  drivers/iommu/mtk_iommu.c                          |   1 -
>  drivers/iommu/tegra-smmu.c                         | 240 ++----
>  drivers/xen/swiotlb-xen.c                          |   3 +-
>  include/linux/dma-iommu.h                          |   8 +
>  include/linux/io-pgtable.h                         |  19 +-
>  include/linux/ioasid.h                             |  10 +-
>  include/linux/iommu.h                              |   2 +
>  include/linux/iova.h                               |  21 -
>  include/linux/swiotlb.h                            |  10 +-
>  kernel/dma/swiotlb.c                               |  22 +-
>  42 files changed, 1613 insertions(+), 1265 deletions(-)
>  create mode 100644 drivers/iommu/iommu-sva-lib.c
>  create mode 100644 drivers/iommu/iommu-sva-lib.h

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