[PATCH v5 0/5] add non-strict mode support for arm-smmu-v3

Will Deacon will.deacon at arm.com
Wed Sep 12 09:57:00 PDT 2018


Hi all,

On Wed, Aug 15, 2018 at 09:28:25AM +0800, Zhen Lei wrote:
> v4 -> v5:
> 1. change the type of global variable and struct member named "non_strict" from
>    "int" to "bool".
> 2. cancel the unnecessary parameter "strict" of __arm_lpae_unmap which was added
>    in v4.
> 3. change boot option "arm_iommu" to "iommu.non_strict".
> 4. convert __iommu_dma_unmap to use iommu_unmap_fast()/iommu_tlb_sync(), because
>    non-leaf unmaps still need to be synchronous.
> 
> Thanks for Robin's review comments.

Since this is 90% of the way there now, I suggest Robin picks up what's here
and incorporates his remaining review comments directly (especially since it
sounded like Zhen Lei hasn't got much free time lately). With that, I can
queue this lot via my smmu branch, which already has some stuff queued
for SMMUv3 and io-pgtable.

Please shout if you have any objections, but I'm keen for this not to
languish on the lists given how close it is!

Will



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