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Add a section skeleton for copy bypass

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It's something we're likely to want to do at some point.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
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Gilles Peskine 2023-10-13 20:05:32 +02:00
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docs/architecture/psa-shared-memory.md
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@ -253,3 +253,11 @@ TODO: when there is a requirement on drivers, how to we validate that our built-
## Analysis of argument protection in built-in drivers
TODO: analyze the built-in implementations of mechanisms for which there is a requirement on drivers. By code inspection, how satisfied are we that they meet the requirement?
## Copy bypass
For efficiency, we are likely to want mechanisms to bypass the copy and process buffers directly in builds that are not affected by shared memory considerations.
Expand this section to document any mechanisms that bypass the copy.
Make sure that such mechanisms preserve the guarantees when buffers overlap.