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SubjectRE: [PATCH 2/2] iommu/vt-d: Remove caching mode check before devtlb flush
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> From: Jacob Pan <jacob.jun.pan@linux.intel.com>
> Sent: Wednesday, April 10, 2024 1:32 AM
>
> If the guest uses SL page tables in vIOMMU, we don;t expose ATS to the
> guest. So ATS is not relevant here, does't matter map or unmap.
>

ATS is orthogonal to SL vs. FL. Where is this restriction coming from?

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