Re: [PATCH] Add a new PIIX option to control PCI hot unplugging of devices on non-root buses

[Ani Sinha]

> On Apr 22, 2020, at 4:15 PM, Ani Sinha <address@hidden> wrote:
> 
> 
> 
>> On Apr 21, 2020, at 8:32 PM, Daniel P. Berrangé <address@hidden> wrote:
>> 
>> On Tue, Apr 21, 2020 at 02:45:04PM +0000, Ani Sinha wrote:
>>> 
>>> 
>>>> On Apr 20, 2020, at 8:32 PM, Michael S. Tsirkin <address@hidden> wrote:
>>>> 
>>>> But I for one would like to focus on keeping PIIX stable
>>>> and focus development on q35.  Not bloating PIIX with lots of new
>>>> features is IMHO a good way to do that.
>>> 
>>> Does this mean this patch is a no-go then? :(
>> 
>> I'd support this patch, as I don't think it can really be described as
>> bloat or destabalizing. It is just adding a simple property to
>> conditionalize existing functionality.  Telling people to switch to Q35
>> is unreasonable as it is not a simple 1-1 conversion from existing use
>> of PIIX. Q35 has much higher complexity in its configuration, has higher
>> memory overhead per VM too, and lacks certain features of PIIX too.
> 
> Cool. How do we go forward from here?
> 

We would really appreciate if we can add this extra knob in Qemu. Maybe someone 
else also in the community will find this useful. We don’t want to maintain 
this patch internally forever but rather prefer we maintain this as a Qemu 
community.

ani