Re: [Qemu-devel] [SeaBIOS] [seabios patch 0/5] dynamic pci i/o windows

[Gerd Hoffmann]

On 05/04/12 15:18, Kevin O'Connor wrote:
> On Fri, May 04, 2012 at 10:21:22AM +0200, Gerd Hoffmann wrote:
>>   Hi,
>>
>> This patch series makes the PCI I/O windows runtime-configurable via
>> qemu firmware config interface.  Main advantage is that we can size and
>> shuffle around the PCI i/O windows according to the amount of memory the
>> virtual machine has.  We don't need a hole for 64bit PCI bars, we can
>> just map them above the main memory.  The hole for 32bit PCI bars can be
>> enlarged for guests with less than 3.5 GB of memory.
> 
> Why pass in a PCI IO range through fw_cfg if SeaBIOS can figure out an
> acceptable range from the amount of memory in the machine?

Suggestions on how to update the pci host bridge windows in the dsdt then?

cheers,
  Gerd