Am 04.05.21 um 11:49 schrieb Christophe Leroy:

Le 04/05/2021 à 11:46, Christian Zigotzky a écrit :

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Am 04.05.21 um 11:11 schrieb Christophe Leroy:

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Le 04/05/2021 à 11:09, Christian Zigotzky a écrit :

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Am 04.05.21 um 10:58 schrieb Christophe Leroy:

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Le 04/05/2021 à 10:29, Christian Zigotzky a écrit :

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On 04 May 2021 at 09:47am, Christophe Leroy wrote:

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Hi

Le 04/05/2021 à 09:21, Christian Zigotzky a écrit :

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Hi Christophe,

Thanks for your answer but I think I don't know how it works 
with the cherry-pick.

$ git bisect start

As you suspect the problem to be specific to powerpc, I can do

git bisect start -- arch/powerpc

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$ git bisect good 68a32ba14177d4a21c4a9a941cf1d7aea86d436f
$ git bisect bad c70a4be130de333ea079c59da41cc959712bb01c

You said that powerpc-5.13-1 is bad so you can narrow the search 
I think:

git bisect bad powerpc-5.13-1
git bisect good 887f3ceb51cd3~

I tried it but without any success.

git bisect bad powerpc-5.13-1

Output:
fatal: Needed a single revision
Bad rev input: powerpc-5.13-1

I don't understand, on my side it works. Maybe a difference 
between your version of git and mine.

In that case, just use the SHA corresponding to the merge:

git bisect bad c70a4be130de333ea079c59da41cc959712bb01c

Christophe

Do you use a BookE machine?

No I don't unfortunately, and I have tried booting in QEMU a kernel 
built with your config, but it freezes before any output.

You can use my kernels and distributions.

Ok, I'll see if I can do something with them.

In the meantime, have you been able to bisect ?

Thanks
Christophe

I am bisecting currently.

$ git bisect start -- arch/powerpc
$ git bisect good 887f3ceb51cd3~
$ git bisect bad c70a4be130de333ea079c59da41cc959712bb01c