Re: [Qemu-devel] q35 chipset support

[Markus Armbruster]

Anthony Liguori <address@hidden> writes:

> On 06/14/2012 02:54 PM, Jason Baron wrote:
>> Hi,
>>
>> I recently updated Isaku Yamahata's q35 patches to work on the latest qemu 
>> and
>> seabios trees. On the qemu side, most of the changes revolved around updating
>> to use QOM and updates to the memory API. I was also able to drop quite a few
>> patches that had already been resolved by the current qemu tree.
>>
>> The trees seem pretty stable and can be found here:
>>
>> git://github.com/jibaron/q35-qemu.git
>> git://github.com/jibaron/q35-seabios.git
>
> I'm got the beginnings of a feature page started:
>
> http://wiki.qemu.org/Features/Q35
>
> The approach above will not work in a QOM world unfortunately.  We
> need to do quite a bit of ground work before adding another chipset.
> The biggest task is converting devices to not require an ISA bus since
> ICH9 simply doesn't have an ISA bus.

Could you explain briefly why use of a software ISA bus construct
matters for device models and/or guests?

[...]