On 2011-05-22 10:41, Gleb Natapov wrote:
>> The chipset knows about the priorities.  How to communicate them to
>> the core?
>>
>> - at runtime, with hierarchical dispatch of ->read() and ->write():
>> slow, and doesn't work at all for RAM.
>> - using registration order: fragile
>> - using priorities
>>
> - by resolving overlapping and registering flattened list with the core.
>   (See example above).

[Registration would happens with the help of the core against the next
higher layer.]

To do this, you need to
 - open-code the resolution logic at every level (very bad idea)
 - provide library services to obtain a flattened representation

Please try to specify such an API without any parameters that are
priority-like.

Jan