Re: [GIT PULL] iommu/arm-smmu: Updates for 5.15

[Robin Murphy <robin.murphy@arm.com>]

On 2021-08-13 17:47, Will Deacon wrote:
> Hi Joerg,
> 
> Please pull these Arm SMMU updates for 5.15. There's not tonnes here, but
> a good mixture of optimisations and cleanups -- summary in the tag.
> 
> This applies cleanly against iommu/next, but I suspect it will conflict
> with Robin's series on the list. Please shout if you need anything from
> me to help with that (e.g. rebase, checking a merge conflict).

In fact it merges cleanly into my local branch, so I hope we should be 
good :)

Robin.

> Cheers,
> 
> Will
> 
> --->8
> 
> The following changes since commit ff1176468d368232b684f75e82563369208bc371:
> 
>    Linux 5.14-rc3 (2021-07-25 15:35:14 -0700)
> 
> are available in the Git repository at:
> 
>    git://git.kernel.org/pub/scm/linux/kernel/git/will/linux.git tags/arm-smmu-updates
> 
> for you to fetch changes up to fac956710ab0812f9e395e9f7a27da551412830f:
> 
>    iommu/arm-smmu-v3: Stop pre-zeroing batch commands (2021-08-13 14:26:06 +0100)
> 
> ----------------------------------------------------------------
> Arm SMMU updates for 5.15
> 
> - SMMUv3
> 
>    * Minor optimisation to avoid zeroing struct members on CMD submission
> 
>    * Increased use of batched commands to reduce submission latency
> 
>    * Refactoring in preparation for ECMDQ support
> 
> - SMMUv2
> 
>    * Fix races when probing devices with identical StreamIDs
> 
>    * Optimise walk cache flushing for Qualcomm implementations
> 
>    * Allow deep sleep states for some Qualcomm SoCs with shared clocks
> 
> ----------------------------------------------------------------
> Ashish Mhetre (1):
>        iommu: Fix race condition during default domain allocation
> 
> John Garry (2):
>        iommu/arm-smmu-v3: Remove some unneeded init in arm_smmu_cmdq_issue_cmdlist()
>        iommu/arm-smmu-v3: Stop pre-zeroing batch commands
> 
> Krishna Reddy (1):
>        iommu/arm-smmu: Fix race condition during iommu_group creation
> 
> Sai Prakash Ranjan (2):
>        iommu/arm-smmu: Add clk_bulk_{prepare/unprepare} to system pm callbacks
>        iommu/arm-smmu: Optimize ->tlb_flush_walk() for qcom implementation
> 
> Zhen Lei (4):
>        iommu/arm-smmu-v3: Use command queue batching helpers to improve performance
>        iommu/arm-smmu-v3: Add and use static helper function arm_smmu_cmdq_issue_cmd_with_sync()
>        iommu/arm-smmu-v3: Add and use static helper function arm_smmu_get_cmdq()
>        iommu/arm-smmu-v3: Extract reusable function __arm_smmu_cmdq_skip_err()
> 
>   drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 89 +++++++++++++++++------------
>   drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c  | 11 ++++
>   drivers/iommu/arm/arm-smmu/arm-smmu.c       | 45 ++++++++++++---
>   drivers/iommu/arm/arm-smmu/arm-smmu.h       |  1 +
>   drivers/iommu/iommu.c                       |  2 +
>   5 files changed, 106 insertions(+), 42 deletions(-)
> 
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