Re: [Qemu-ppc] [PATCH 1/2] spapr/rtas: disable the decrementer interrupt when a CPU is unplugged

[Cédric Le Goater]

On 10/06/2017 12:10 PM, David Gibson wrote:
> On Fri, Oct 06, 2017 at 11:53:30AM +0200, Benjamin Herrenschmidt wrote:
>> On Fri, 2017-10-06 at 20:07 +1100, David Gibson wrote:
>>> Hm.  Checking mmu_model doesn't seem right to me.  I mean, it'll get
>>> the right answer in practice, but the LPCR programming has nothing
>>> whatsoever to do with the MMU.
>>>
>>> I think explicitly checking if cpu_ is a POWER9 instance with
>>> object_dynamic_cast would be a better option.
>>
>> Best is ARCH 300 ... do we hvae arch versions outside of MMU model
>> these days ?
> 
> Not that I could spot easily.  Apart from implicitly in the cpu
> family.
> 

how about : 

        pcc->pvr_match(pcc, CPU_POWERPC_LOGICAL_3_00);

C.