what is the Subsequent functions of the entity associationtree?

[wongkq]

Hello: Does the entity association tree have any other function besides generating the entity association PDR? If BMC does not have a merge entity association PDR, does the entity association tree of hostboot need to be modified?

[dcrowell77]

There are several different (unrelated) uses of the word "association". Can you point to a specific example so that I understand the context of the question?

[ibmzach]

Does the entity association tree have any other function besides generating the entity association PDR?

Hostboot constructs an entity association tree in order to generate the correct association PDRs, but I'm not sure that answers your question.

If BMC does not have a merge entity association PDR

What is a "merge entity association PDR"?

does the entity association tree of hostboot need to be modified?

Hostboot doesn't keep a persistent entity tree, it only builds an ephemeral one to construct the association PDRs for the BMC, and it does this one time during each IPL.

[wongkq]

If BMC does not have a merge entity association PDR

What is a "merge entity association PDR"? Sorry, I mean hostboot sends entity association PDRs to BMC. If BMC does not merge these PDRs, will hostboot modify its entity association tree?

[ibmzach]

Hostboot clears all its PDRs before retrieving them again from the BMC during the PDR exchange. The BMC must merge its entity association PDRs to provide a coherent view of the IDs for the sensors and effecters that are created later. Hostboot doesn't "modify" any entity association tree; it merely correlates the entities that the BMC describes with its own internal hardware information and uses that to create and refer to sensors and effecters for various hardware operations.