707ff80021
The Xen ioreq-server API, introduced in Xen 4.5, requires that PCI device models explicitly register with Xen for config space accesses. This patch adds a listener interface into qdev-core which can be used by the Xen interface code to monitor for arrival and departure of PCI devices. Signed-off-by: Paul Durrant <paul.durrant@citrix.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>