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Date: Sun, 13 Feb 2011 09:14:10 -0600
From: Anthony Liguori <anthony@codemonkey.ws>
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Subject: Re: [Qemu-devel] Re: [PATCH 15/15] Implement the bus structure for
	PAPR virtual IO
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To: Alexander Graf <agraf@suse.de>
Cc: Blue Swirl <blauwirbel@gmail.com>, Paul Mackerras <paulus@samba.org>, "qemu-devel@nongnu.org List" <qemu-devel@nongnu.org>, anton@samba.org, David Gibson <david@gibson.dropbear.id.au>

On 02/13/2011 06:40 AM, Alexander Graf wrote:
>
>> Ah, yeah.  I'm still not sure what to do about it.  I was going to
>> fold the dynamic hcall registration into the patch set before
>> upstreaming.  But then something paulus said made me rethink whether
>> the dynamic registration was a good idea.  Still need to sort this out
>> before the series is really ready.
>>      
> We can surely move it to dynamic later on. I think the "proper" way would be to populate a qdev bus and have the individual hypercall receivers register themselves through -device creations.
>    

Ignore the qdev bit for a moment.  Hypercalls could be plausibly 
implemented as another I/O space from a processor so the thing to model 
off of would be PIO dispatch (cpu_outb and friends).

 From a qdev perspective, having a VIO bus makes sense.  The details of 
which I/O spaces are uses are not as important from a device tree 
perspective.

Regards,

Anthony Liguori

> Alex
>
>
>