[FSL P50x0] Xorg always restarts again and again after the the PowerPC updates 5.13-1

[Christophe Leroy]

Le 13/05/2021 à 17:19, Christian Zigotzky a écrit :
> On 13 May 2021 at 12:01 pm, Christophe Leroy wrote:
>>
>>
>> Le 13/05/2021 à 08:47, Christian Zigotzky a écrit :
>>> Hi Christophe,
>>>
>>>> On 9. May 2021, at 19:37, Christophe Leroy <christophe.leroy at csgroup.eu> wrote:
>>>>
>>>> Did I do an error in my analysis ?
>>>
>>> No, you didn’t. On the contrary you have found the issue. ;-) The issue is somewhere in the new 
>>> interrupt code.
>>
>> I'm not convinced, but let's give it a try.
>>
>>>
>>>> ZZ | * | ceff77efa4f8 powerpc/64e/interrupt: Use new interrupt context tracking scheme
>>>
>>> Could you please create a patch for reverting the new interrupt code? I would like to confirm 
>>> your result.
>>
>> Please fetch https://github.com/chleroy/linux.git and try the branch for_christian.
>>
>> This is a revert of approx a dozen of commits around the changes to 64e on top of v5.13-rc1.
>>
>> If the top of the branch works for you, it would be great if you can find out which one of the 
>> reverts fixes the problem for real.
>>
>> Thanks
>> Christophe
> It's working! Great! I can use the RC1 on my FSL P5040. Thank you! The issue is definitely somewhere 
> in the interrupt code. Please tell me the next steps.
> 

Can you bisect between 5.13-rc1 and the top of the 'for_christian' branch to find the first 'good' 
commit ?

Take care it is an "up side down" bisect, a 'good' is one that does _not_ work and a 'bad' is a 
commit that works.

git bisect start
git bisect bad 1c8f441f1485
git bisect good 6efb943b8616

Christophe