On Wed, May 24, 2017 at 07:01:42PM +0100, Jean-Philippe Brucker wrote:
> * TLB invalidation by range is batched and committed with a single sync.
> Batching ATC invalidation is inconvenient, endpoints limit the number of
> inflight invalidations. We'd have to count the number of invalidations
> queued and send a sync periodically. In addition, I suspect we always
> need a sync between TLB and ATC invalidation for the same page.
This sounds like the number of outstanding ATS invalidations is not
managed by the SMMU hardware, is that right?
Joerg
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