Re: [PATCH 0/7] of: overlay: Add support for export-symbols node feature

[Herve Codina]

Hi Ayush,

On Tue, 10 Dec 2024 14:52:22 +0530
Ayush Singh <ayush@xxxxxxxxxxxxxxx> wrote:

...
> 
> What is the reason for not using symbols directly as described here [3]?
> 
> I do like this approach since it does not pollute the global symbols. 
> Just want to know if there are any other reasons for it.
> 

Modifying the __symbols__ node at runtime (adding / removing properties in
it) exposes memory leaks if __symbols__ already exist in the live DT.
This __symbols__ node exist if the dtb was compiled with '-@' or if you
chain the overlay (i.e. __symbols__ node created by the first overlay).

I think also that some conflicts can appears. What happens if you want to
add a new label but this label is already present for some other purpose?

Best regards,
Hervé