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Re: [PATCH v2 6/8] target/ppc: allow ppc_cpu_do_system_reset to take an


From: Programmingkid
Subject: Re: [PATCH v2 6/8] target/ppc: allow ppc_cpu_do_system_reset to take an alternate vector
Date: Thu, 19 Mar 2020 16:49:55 -0400

> On Mar 17, 2020, at 6:46 PM, David Gibson <address@hidden> wrote:
> 
> On Tue, Mar 17, 2020 at 11:06:15AM -0400, Programmingkid wrote:
>> 
>>> On Mar 17, 2020, at 7:01 AM, address@hidden wrote:
>>> 
>>> Message: 3
>>> Date: Tue, 17 Mar 2020 11:47:32 +0100
>>> From: Cédric Le Goater <address@hidden>
>>> To: David Gibson <address@hidden>, Nicholas Piggin
>>>     <address@hidden>
>>> Cc: address@hidden, Aravinda Prasad <address@hidden>,
>>>     Ganesh Goudar <address@hidden>, Greg Kurz <address@hidden>,
>>>     address@hidden
>>> Subject: Re: [PATCH v2 6/8] target/ppc: allow ppc_cpu_do_system_reset
>>>     to take an alternate vector
>>> Message-ID: <address@hidden>
>>> Content-Type: text/plain; charset=windows-1252
>>> 
>>> On 3/17/20 12:34 AM, David Gibson wrote:
>>>> On Tue, Mar 17, 2020 at 09:28:24AM +1000, Nicholas Piggin wrote:
>>>>> Cédric Le Goater's on March 17, 2020 4:15 am:
>>>>>> On 3/16/20 3:26 PM, Nicholas Piggin wrote:
>>>>>>> Provide for an alternate delivery location, -1 defaults to the
>>>>>>> architected address.
>>>>>> 
>>>>>> I don't know what is the best approach, to override the vector addr
>>>>>> computed by powerpc_excp() or use a machine class handler with 
>>>>>> cpu->vhyp.
>>>>> 
>>>>> Yeah it's getting a bit ad hoc and inconsistent with machine check
>>>>> etc, I just figured get something minimal in there now. The whole
>>>>> exception delivery needs a spring clean though.
>>>> 
>> 
>> Currently Mac OS 9 will not restart. When someone goes to restart it
>> the screen will turn black and stay that way. Could this patch solve
>> this problem?
> 
> No.  It's unlikely to be related, and at this stage is used
> exclusively to implement the FWNMI stuff for the pseries machine.
> 
> -- 
> David Gibson                  | I'll have my music baroque, and my code
> david AT gibson.dropbear.id.au        | minimalist, thank you.  NOT _the_ 
> _other_
>                               | _way_ _around_!
> http://www.ozlabs.org/~dgibson

Ok. Thank you.




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