[Qemu-devel] [PATCH v4 REPOST 2/2] Use ioreq-server API

[Paul Durrant <paul.durrant@citrix.com>]

This patch series is a re-post v4 of what was originally the single
patch "Xen: Use the ioreq-server API when available". It was originally
posted on October 16th and pinged on October 29th. I am still awaiting
an ack/nack for patch #1, hence the re-post.

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.

v4 of the series replaces the use of a vmstate pre_save callback
with extra code in the existing runstate change notification
callback. It also tidies up some things in xen-hvm.c pointed out
by Stefano and adds his ack to patch #2.