> 
> That will only work if the HOBs are returned in ProcessorIndex order.
> 
> That happens to be the case in my testing; the HOBs are returned in the
> same order they are created by patch #5 of this series.
> 
> Is that behavior guaranteed?  MdePkg/Include/Library/HobLib.h doesn't
> say anything about the ordering.

The HOB item order follows when it's created.
The HOB structure implicitly guarantees it.

I am aware that in a production server UEFI firmware, the number of HOB items 
is huge.
Enumerating the HOB list multiple times is a big cost.


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