[PATCH v4] powerpc: Avoid code patching freed init sections

[Christophe LEROY]

Le 03/10/2018 à 05:20, Michael Ellerman a écrit :
> Andreas Schwab <schwab at linux-m68k.org> writes:
> 
>> On Sep 14 2018, Michael Neuling <mikey at neuling.org> wrote:
>>
>>> This stops us from doing code patching in init sections after they've
>>> been freed.
>>
>> This breaks booting on PowerBook6,7, crashing very early.
> 
> Crud, sorry.
> 
> My CI setup tests with the mac99 qemu model, but that boots happily, not
> sure why.

Maybe mac99 doesn't use relocation ?

The issue is that during early boot, 'init_mem_is_free' is not yet at 
its definitif address.

I sent a fix for it : https://patchwork.ozlabs.org/patch/977195/

Christophe