[PATCH v4 0/2] CPU hotplug for qemu-xen

[Anthony PERARD <anthony.perard@citrix.com>]

Hi all,

This series implements the 'cpu-add' QMP command to hotplug CPU with qemu-xen.

When using adding vcpus with this series, libxl will report many "error". This
is because libxl call the QMP command 'cpu-add' for every plugged vcpus, even
those that have been plugged before. There is currently no way to list cpus
that are plugged by QEMU. Also, the way errors are handled by libxl_qmp those
not help yet to suppress this error printing.

Unplug of vcpu is not supported by the series.

Change since the last set:
  - ignore the return value of libxl__qmp_cpu_add as it those not give any
    usefull information.

And before (v2-v3):
  - use more and different macro in the libxl patch.

Anthony PERARD (2):
  libxl: Add "cpu-add" QMP command.
  libxl: Use QMP cpu-add to hotplug CPU with qemu-xen.

 tools/libxl/libxl.c          | 47 ++++++++++++++++++++++++++++++++++++++------
 tools/libxl/libxl_internal.h |  2 ++
 tools/libxl/libxl_qmp.c      | 21 ++++++++++++++++++++
 3 files changed, 64 insertions(+), 6 deletions(-)

-- 
Anthony PERARD