Mac Mini G4 hang on boot with git master

[Mark Cave-Ayland]

On 17/03/2019 16:25, christophe leroy wrote:

>> This was a weird one: bisecting directly from git master gave a nonsense result,
>> however by manually rebasing Michael's PR onto my last known good commit from master
>> I was able to finally pin it down to this commit:
>>
>>
>> 7a0d6955f3f7a4250da63d528bfff7a9c91b5725 is the first bad commit
>> commit 7a0d6955f3f7a4250da63d528bfff7a9c91b5725
>> Author: Christophe Leroy <christophe.leroy at c-s.fr>
>> Date:   Thu Feb 21 10:37:55 2019 +0000
>>
>>      powerpc/6xx: Store PGDIR physical address in a SPRG
>>
>>      Use SPRN_SPRG2 to store the current thread PGDIR and
>>      avoid reading thread_struct.pgdir at every TLB miss.
>>
>>      Signed-off-by: Christophe Leroy <christophe.leroy at c-s.fr>
>>      Signed-off-by: Michael Ellerman <mpe at ellerman.id.au>
>>
>>
> 
> Hi,
> 
> The fix is there:
> 
> https://patchwork.ozlabs.org/patch/1053385/
> 
> Christophe

Hi Christophe,

Thank you! I've tried the patch here and have confirmed that it fixes the problem
with the hang on boot.


ATB,

Mark.