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Date: Sun, 22 Aug 2010 16:07:51 -0500
From: Anthony Liguori <anthony@codemonkey.ws>
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Subject: Re: [Qemu-devel] [PATCH v2 0/7] APIC/IOAPIC cleanup
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To: Avi Kivity <avi@redhat.com>
Cc: Blue Swirl <blauwirbel@gmail.com>, "Liu >> \"Liu,
	Jinsong\"" <jinsong.liu@intel.com>, qemu-devel <qemu-devel@nongnu.org>, Paul Brook <paul@codesourcery.com>

On 08/22/2010 02:44 PM, Avi Kivity wrote:
>> No more MI diamond and all devices have DeviceStates.  
>> Coincidentally, it matches more closely how hardware works..
>>
>
>
> Well, I agree, but I honestly lost the context.  How does this relate 
> to the APIC and cpu hotplug?
>
> I'll take the opportunity to say that we should be using a language 
> that has first-class (...) support for these concepts instead of 
> having to divine them from the code.

At the risk of sounding uncool, I think what we really need is a UML 
diagram describing the device tree.  It's really not that much more 
difficult to create a similar mess in C++.

Regards,

Anthony Liguori

>> Generally speaking, any time we have one device that needs to sit on 
>> multiple busses, we're going to have to model it in this fashion.
>
> We'll just have to address them one by one then.  Perhaps if many come 
> up we can try a generic solution.
>