Re: [Qemu-devel] KVM call minutes for Feb 8

Anthony Liguori
2011-02-10T14:01:03Z

On 02/10/2011 02:00 PM, Avi Kivity wrote:
> On 02/10/2011 02:51 PM, Anthony Liguori wrote:
>> On 02/10/2011 12:13 PM, Gleb Natapov wrote:
>>>
>>> Which spec? Even in this discussion we completely mixed different
>>> things. 440FX is not a chipset.
>>
>> Yes, it is. It's a single silicon package with a defined pinout. If
>> you don't believe me, re-read the spec.
>>
>> It's a MCM with the PIIX3 being internally connected. The
>> connection between the i440fx and PIIX3 happens to be PCI but that's
>> not always the case. Sometimes it's a proprietary bus.
>
> Aren't they two distinct chips, together comprising the chip-set?
>
> One (the northbridge) converts the system bus to PCI + some extra
> wires, the other (southbridge) bridges PCI to ISA and contains some
> embedded ISA devices. IIRC there are some wires between them that are
> not PCI.

Yes, you are correct. So I can understand an argument for:

-device i440fx,id=pmc -device piix3,chipset=pmc

Or something like that.

Regards,

Anthony Liguori