Re: [Qemu-devel] [PATCH RFC v2 2/2] hw/pci: handle unassigned pci addresses

[Peter Maydell]

On 15 September 2013 14:39, Michael S. Tsirkin <address@hidden> wrote:
> On Sun, Sep 15, 2013 at 02:24:07PM +0100, Peter Maydell wrote:
>> Yes, that's true, but even then it's usually just "overlaps
>> of subregions within a single container" and there isn't
>> a need to worry about within-container versus outside-container
>> interactions.

> Well actually if you look at the 'subregion collisions'
> mail that I sent, must of the collisions are exactly
> of this sort.
>
> For example, mcfg in q35 overlaps the pci hole, so
> any pci bar can be made to overlap it.

Yes, but if we were applying a sensible set of priorities
then you don't need to care at all about the contents
of the pci hole container, because the pci hole will
be at a lower priority then mcfg; so you don't get into
this odd corner case of "what happens if the high
priority container turns out not to have anything there".

-- PMM