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Re: [Qemu-ppc] [PATCH v7 18/19] spapr: add a 'pseries-4.0-xive' machine

From: Cédric Le Goater
Subject: Re: [Qemu-ppc] [PATCH v7 18/19] spapr: add a 'pseries-4.0-xive' machine type
Date: Wed, 12 Dec 2018 08:26:20 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.3.1

[ ... ]

>>> So, instead I think we want a machine option which can be set to
>>> xics/xive/dual, with xics being the default for earlier machine types
>>> and dual the default for 4.0 onwards.
>> I will revive an old patch doing just that. 
>> The question now is how to link the sPAPRMachineState instance to 
>> the selected sPAPR IRQ backend. 
>> I don't think we can move 'smc->irq' to sPAPRMachineState.
> I think you could..
>> So we will
>> need an helper returning the appropriate backend depending on the machine 
>> option and 'smc->irq' should disappear.
> ..but this approach might be easier.

I proposed the first approach in v8. We can add the missing wrappers 
in a second round and move then under spapr_irq.h. These are :
ops :

   spapr->irq->dt_populate   spapr->irq->print_info
   spapr->irq->cpu_intc_create (this name is too long)

constants :



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