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From: Gerd Hoffmann <kraxel@redhat.com>
Date: Thu, 10 Oct 2013 15:21:55 +0200
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Subject: Re: [Qemu-devel] [RFC] map 64-bit PCI devices after all possible RAM
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To: Igor Mammedov <imammedo@redhat.com>
Cc: pbonzini@redhat.com, kevin@koconnor.net, seabios@seabios.org, qemu-devel@nongnu.org, "Michael S. Tsirkin" <mst@redhat.com>

  Hi,

> > Guess we can just go with Igor's approach then.  "etc/mem64-end" is a
> > pretty bad name to say "please map 64bit pci bars here" though.
> reasoning bind was to tell BIOS where RAM ends and let it decide what
> to do with this information.
> 
> But we could do other way around and use "etc/pci-info" that was
> proposed earlier by Michael, it is already committed into QEMU and
> provides start/end of 32/64-bit PCI windows in QEMU view.
> We could use pci-info.w64.start as base for 64-bit bars.

We need only the single value from pci-info, I'd suggest to drop
pci-info in favor of a file you can read using romfile_loadint.

cheers,
  Gerd