On Tue, 10 May 2022 09:38:58 +0100, Robin Murphy wrote:
> When using the legacy "mmu-masters" DT binding, we reject DMA domains
> since we have no guarantee of driver probe order and thus can't rely on
> client drivers getting the correct DMA ops. However, we can do better
> than fall back to the old no-default-domain behaviour now, by forcing an
> identity default domain instead. This also means that detaching from a
> VFIO domain can actually work - that looks to have been broken for over
> 6 years, so clearly isn't something that legacy binding users care
> about, but we may as well make the driver code make sense anyway.
>
> [...]
Applied to will (for-joerg/arm-smmu/updates), thanks!
[1/1] iommu/arm-smmu: Force identity domains for legacy binding
https://git.kernel.org/will/c/628bf55b6204
Cheers,
--
Will
https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev
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