[PATCH v2] iommu: Improve the performance for direct_mapping

[Will Deacon]

On Mon, 7 Dec 2020 17:35:53 +0800, Yong Wu wrote:
> Currently direct_mapping always use the smallest pgsize which is SZ_4K
> normally to mapping. This is unnecessary. we could gather the size, and
> call iommu_map then, iommu_map could decide how to map better with the
> just right pgsize.
> 
> >From the original comment, we should take care overlap, otherwise,
> iommu_map may return -EEXIST. In this overlap case, we should map the
> previous region before overlap firstly. then map the left part.
> 
> [...]

Applied to arm64 (for-next/iommu/misc), thanks!

[1/1] iommu: Improve the performance for direct_mapping
      https://git.kernel.org/arm64/c/093b32a849b3

Cheers,
-- 
Will

https://fixes.arm64.dev
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