On 19/10/2017 16:03, Gerd Hoffmann wrote:
Hi,
- commit 39848901818 pc: limit 64 bit hole to 2G by default
shows us QEMU had the 64bit PCI hole, so it is a regression.
commit message says:
<quote>
It turns out that some 32 bit windows guests crash
if 64 bit PCI hole size is >2G.
</quote>
Why this suddenly isn't a problem any more?
I suppose it is, so we need a way to turn it "off".
Also: how about just using the existing pci_hole64_size property?
This is how I started, however Eduardo and (and maybe Michael ?)
where against letting the upper management software to deal with
such a low low level detail. They simply can't take such a decision.
This is why the property you mentioned is not ever linked
in code anywhere! It is simply not implemented and not used.
What about renaming the added compat property
from x-pci-hole64-fix to pci-hole64? Users using 32-bit Windows
guests having the mentioned issue guests will disable it.
Thanks,
Marcel
cheers,
Gerd
