This patch series is v3 of what was originally the single patch "Xen: Use the ioreq-server API when available".
v2 of the series moved the code that added the PCI bus listener to patch #1 and the remainder of the changes to patch #2. Patch #2 was then re-worked to constrain the #ifdefing to xen_common.h, as requested by Stefano. v3 of the series modifies patch #1 to add the listener interface into the core qdev, rather than the PCI bus code. This change only requires trivial modification to patch #2, to only act on realize/ unrealize of PCI devices. Patch #2 was also modified at Stefano's request to remove an extra identity check of memory sections against the ram region.
