Re: [Qemu-devel] [Qemu-ppc] [PATCH v2] pci: allow 0 address for PCI IO/MEM regions

[Laurent Vivier]

On 24/07/2015 10:46, Peter Maydell wrote:
> On 23 July 2015 at 22:49, Michael Roth <address@hidden> wrote:
>> I seem to recall Michael suggesting it may have already been
>> fixed on x86. I think we had a TODO to figure out all
>> the architectures that don't use IO windows and figure out
>> if they need a fix as well.
> 
> If we think we've fixed x86, then I think for 2.5 I would
> be happy with "allow 0 addresses globally and see if anything
> breaks". I'm pretty confident none of the ARM platforms will

I agree. It was exactly what I was thinking...

> have issues -- they don't do any kind of overlapping of
> non-PCI memory regions with the MMIO window(s).

So, after a "grep PCI" in defconfigs, we can have issue with powerpc,
s390x and sparc64 (I guess it is already fixed for x86_64 and i386 ?).

Laurent