[PATCH] iommu/arm-smmuv3: Update comments about ATS and bypass
Will Deacon
will at kernel.org
Mon Dec 9 16:17:27 PST 2024
On Thu, 05 Dec 2024 11:40:15 -0400, Jason Gunthorpe wrote:
> The SMMUv3 spec has a note that BYPASS and ATS don't work together under
> the STE EATS field definition. However there is another section "13.6.4
> Full ATS skipping stage 1" that explains under certain conditions BYPASS
> and ATS do work together if the STE is using S1DSS to select BYPASS and
> the CD table has the possibility for a substream.
>
> When these comments were written the understanding was that all forms of
> BYPASS just didn't work and this was to be a future problem to solve.
>
> [...]
Applied to will (for-joerg/arm-smmu/updates), thanks!
[1/1] iommu/arm-smmuv3: Update comments about ATS and bypass
https://git.kernel.org/will/c/9b640ae7fbba
Cheers,
--
Will
https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev
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