Re: [Qemu-devel] [PATCH] hw/pci-host: Fix x86 Host Bridges 64bit PCI hole

[Marcel Apfelbaum]

On 23/10/2017 8:45, Gerd Hoffmann wrote:
>    Hi,
>
> > The guest will still run with 40 bits physical!
> > (judging the code anyway, I hope I am wrong)
> >
> > Then, the stakes are not so big, the Guest kernel will disregard
> > the 64bit hole since is not CPU addressable and go on.
>
> But then there is no working 64bit hole for hotplug ...

Hosts with old CPUs are not fit for modern PCIe devices
having large BARs anyway, no 64bit hole in this case would
be OK, I think.

Thanks,
Marcel

> cheers,
>    Gerd