Re: [Qemu-devel] [RFC v4 3/6] i386/acpi-build: describe new pci domain in AML

[Zihan Yang]

Marcel Apfelbaum <address@hidden> 于2018年8月25日周六 下午7:58写道：
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> On 08/19/2018 05:00 AM, Zihan Yang wrote:
> > Marcel Apfelbaum <address@hidden> 于2018年8月18日周六 上午1:49写道：
> >>
> >>
> >> On 08/09/2018 09:34 AM, Zihan Yang wrote:
> >>> Describe new pci segments of host bridges in AML as new pci devices,
> >>> with _SEG and _BBN to let them be in DSDT.
> >>>
> >>> Besides, bus_nr indicates the bus number of pxb-pcie under pcie.0 bus,
> >>> but since we put it into separate domain, it should be zero,
> >> Why should it be 0? Isn't possible we start another domain from bus_nr> 0?
> > In the last version, I got a misunderstanding about bus_nr, and you pointed 
> > me
> > out that we should start from bus 0 when in new domain. I can support this
> > start_bus in later patch, but I wonder when would we want to start a domain
> > from bus_nr > 0? I'm not quite familiar with the use case.
>
> That is a good point. I can't think of a reason to start a new PCI
> domain with a bus number  >0 , but is it possible.
> So if it doesn't complicate the implementation we don't
> want this kind of limitation.
> On the other hand, if it makes the code too complicated,
> we can argue for requiring it.

OK, then I will add it first and see its impact.

> Thanks,
> Marcel
>
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