Re: MPC8321 boot failure

Re: MPC8321 boot failure

[Christophe LEROY]

Hi,

I can now confirm that the boot failure is due to the absence of commit 
8183d99f4a22 ("powerpc/lib/feature-fixups: use raw_patch_instruction()")

Greg, could you please apply that patch to 4.14 stable ?

Thanks
Christophe

Le 17/10/2018 � 18:36, Christophe LEROY a �crit�:
> Hi,
> 
> Yes I discovered the same issue today on MPC8321E, I plan to look at it 
> more closely tomorrow morning (Paris Time).
> 
> I think we are missing commit 8183d99f4a22c2abbc543847a588df3666ef0c0c , 
> I didn't realise it when we applied the serie to 4.14, 
> patch_instruction() is called too early without that patch.
> 
> If you have opportunity to test now, you are welcome, otherwise I'll 
> test it tomorrow.
> 
> Christophe
> 
> Le 17/10/2018 � 17:18, David Gounaris a �crit�:
>> Hello, I got into troubles when I upgraded to Linux kernel 4.14.76 on 
>> boards with MPC8321.
>>
>>
>> The symptom that I see is that the boot process gets cyclic, and no 
>> printouts are seen from the Linux kernel. It�seems like it resets.
>>
>>
>> When I revert the following commits it works again.
>>
>> af1a8101794dfea897290e057f61086dabfe6c91, powerpc/lib: fix book3s/32 
>> boot failure due to code patching
>> 609fbeddb24c4035d24fc32d82dc08b30ae3dfc0, powerpc: Avoid code patching 
>> freed init sections
>>
>> Any ideas of how to continue?
>>
>> BR / David Gounaris
>>
>>
>>

Re: SV: MPC8321 boot failure

[gregkh]

On Thu, Oct 18, 2018 at 08:51:46AM +0000, David Gounaris wrote:
> Hi, I can also confirm that it works after cherry-picking the proposed commit.
> 
> Reported-and-tested-by: David Gounaris <david.gounaris@infinera.com<mailto:David.Gounaris@infinera.com>>
> 

Now queued up, thanks.

greg k-h