[Qemu-devel] [PATCH v3 0/4] xen: add qdevs for each backend, correct pvUSB

[Juergen Gross <jgross@suse.com>]

Trying to use pvUSB in a Xen guest with a qemu emulated USB controller
will crash qemu as it tries to attach a pvUSB device to the emulated
controller.

This can be avoided by adding a unique id to each pvUSB controller which
can be used when attaching the pvUSB device. In order to make this
possible the pvUSB controller has to be a hotpluggable qemu device.

This is achieved by adding a qdev for each Xen backend all attached to
a new Xen specific bus.

Changes in V3:
- removed two spurious changes in patch 3 as requested by Stefano

Changes in V2:
- one qdev for each backend instead of pvUSB only

Juergen Gross (4):
  xen: add an own bus for xen backend devices
  qdev: add function qdev_set_id()
  xen: create qdev for each backend device
  xen: attach pvusb usb bus to backend qdev

 hw/usb/xen-usb.c             | 23 +++++++--------
 hw/xen/xen_backend.c         | 66 ++++++++++++++++++++++++++++++++++++++++++--
 hw/xen/xen_pvdev.c           |  4 ++-
 include/hw/xen/xen_backend.h |  8 ++++++
 include/hw/xen/xen_pvdev.h   |  1 +
 include/monitor/qdev.h       |  1 +
 qdev-monitor.c               | 36 +++++++++++++-----------
 7 files changed, 106 insertions(+), 33 deletions(-)

-- 
2.10.0