Re: [PATCH v1 0/3] Clean-up arm-smmu-v3-sva.c: remove arm_smmu_bond

[Will Deacon]

On Tue, 5 Sep 2023 19:49:11 +0800, Michael Shavit wrote:
> This small series was originally part of a larger effort to support
> set_dev_pasid in arm-smmu-v3.c and a related SVA refactoring. But it can
> also stand on its own as an initial and prepatory clean-up.
> 
> The crux of this series relies on the observation that SVA won't
> allocate multiple SVA domains for the same device and mm pair. There's
> therefore no reason for the driver to try to normalize data allocated
> for a device/mm pair across set_dev_pasid calls. This simplification
> then allows set_dev_pasid to use the SVA iommu_domain to hold
> information instead of allocating a "bond" to represent the attachement.
> Note that long term, we'll likely want to represent the SVA domain using
> the same arm_smmu_domain struct used in arm-smmu-v3. This series serves
> as an interim step to make those later refactors easier to reason about.
> 
> [...]

Applied first two patches to will (for-joerg/arm-smmu/updates), thanks!

[1/3] iommu/arm-smmu-v3-sva: Remove unused iommu_sva handle
      https://git.kernel.org/will/c/d912aed14fe4
[2/3] iommu/arm-smmu-v3-sva: Remove bond refcount
      https://git.kernel.org/will/c/37ed36448fcd

Cheers,
-- 
Will

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