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From: Gerd Hoffmann <kraxel@redhat.com>
Date: Thu, 19 Oct 2017 15:03:45 +0200
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Subject: Re: [Qemu-devel] [PATCH] hw/pci-host: Fix x86 Host Bridges 64bit
 PCI hole
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To: Marcel Apfelbaum <marcel@redhat.com>, Laszlo Ersek <lersek@redhat.com>, qemu-devel@nongnu.org
Cc: mst@redhat.com, pbonzini@redhat.com, ehabkost@redhat.com, Igor Mammedov <imammedo@redhat.com>, "Dr. David Alan Gilbert" <dgilbert@redhat.com>

  Hi,

> =C2=A0 - commit 39848901818 pc: limit 64 bit hole to 2G by default
> =C2=A0 shows us QEMU had the 64bit PCI hole, so it is a regression.

commit message says:

<quote>
=C2=A0=C2=A0=C2=A0=C2=A0It turns out that some 32 bit windows guests cras=
h
=C2=A0=C2=A0=C2=A0=C2=A0if 64 bit PCI hole size is >2G.
</quote>

Why this suddenly isn't a problem any more?

Also: how about just using the existing pci_hole64_size property?

cheers,
  Gerd