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? -Kevin
