On 2021/7/26 16:27, Robin Murphy wrote:

On 2021-07-24 06:29, Lu Baolu wrote:

quoted

Hi Robin,

On 2021/7/22 2:20, Robin Murphy wrote:

quoted

Eliminate the iommu_get_dma_strict() indirection and pipe the
information through the domain type from the beginning. Besides
the flow simplification this also has several nice side-effects:

  - Automatically implies strict mode for untrusted devices by
    virtue of their IOMMU_DOMAIN_DMA override.
  - Ensures that we only ends up using flush queues for drivers
    which are aware of them and can actually benefit.

Is this expressed by vendor iommu driver has ops->flush_iotlb_all?

No, it's literally whether ->domain_alloc accepts the DMA_DOMAIN_FQ type 
or not.

Get it. Thank you!

Best regards,
baolu

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