Re: [PATCH v4 2/5] drivers/of: do not add memory for unavailable nodes

[Reza Arbab]

On Mon, Oct 24, 2016 at 09:24:04PM +1100, Michael Ellerman wrote:
> The code already looks for "linux,usable-memory" in preference to 
> "reg". Can you use that instead?

Yes, we could set the size of "linux,usable-memory" to zero instead of 
setting status to "disabled".

I'll send a v5 of this set which drops 1/5 and 2/5. That would be the 
only difference here.

> That would have the advantage that existing kernels already understand
> it.
>
> Another problem with using "status" is we could have device trees out
> there that have status = disabled and we don't know about it, and by
> changing the kernel to use that property we break people's systems.
> Though for memory nodes my guess is that's not true, but you never know ...

--
Reza Arbab