On J722S, when testing with Vision apps conformance tests, we see that the cache invalidate calls on the A53 cores does not seem to have the desired effect. The memory range that the cache invalidate operates on seems to have stale data.

Other observations:

• When the memory region is marked non-cached on the A53 side, the issue is not seen, but the performance deteriorates severely.
• This issue is seen when exchanging buffers between C7x and A53.
• This issue is seen on Sitara devices also.
• This issue is only seen for QNX HLOS.