Re: [PATCH v4 2/2] of: Add unit tests for applying overlays

[Frank Rowand]

Hi Rob,

On 07/25/17 13:36, Rob Herring wrote:
> On Tue, Apr 25, 2017 at 7:09 PM,  <frowand.list@xxxxxxxxx> wrote:
>> From: Frank Rowand <frank.rowand@xxxxxxxx>
>>
>> Existing overlay unit tests examine individual pieces of the overlay
>> code.  The new tests target the entire process of applying an overlay.
>>
>> Signed-off-by: Frank Rowand <frank.rowand@xxxxxxxx>
>> ---
> 
> [...]
> 
>> @@ -1261,6 +1263,8 @@ void __init unflatten_device_tree(void)
>>
>>         /* Get pointer to "/chosen" and "/aliases" nodes for use everywhere */
>>         of_alias_scan(early_init_dt_alloc_memory_arch);
>> +
>> +       unittest_unflatten_overlay_base();
> 
> This breaks on systems that don't boot with FDT and call
> unflatten_device_tree, namely x86 and UML (UML needs a few hacks to
> work) which was a feature of the unittest. Considering applying
> overlays on x86 is something we'll want to support, the unittest
> should support that case.
> 
> Rob

What is the symptom of the breakage?  Or what is causing breakage?

-Frank