[libvirt] [PATCH 0/2] use qemu's dump-guest-meory when vm uses host device

[Wen Congyang]

Currently, we use migrate to dump guest's memory. There is one
restriction in migrate command: the device's status should be
stored in qemu because the device's status should be passed to
target machine.

If we passthrough a host device to guest, the device's status
is stored in the real device. So migrate command will fail.

We usually use dump when guest is panicked. So there is no need
to store device's status in the vmcore.

qemu will have a new monitor command dump-guest-memory to dump
guest memory, but it doesn't support async now(it will support
later when the common async API is implemented).

So I use dump-guest-memory only when the guest uses host device
in this patchset.

Wen Congyang (2):
  qemu: implement qemu's dump-guest-memory
  qemu: try to use qemu's dump-guest-meory when vm uses host device

 src/qemu/qemu_domain.c       |    1 +
 src/qemu/qemu_domain.h       |    1 +
 src/qemu/qemu_driver.c       |   42 ++++++++++++++++++++-
 src/qemu/qemu_monitor.c      |   32 ++++++++++++++++
 src/qemu/qemu_monitor.h      |   13 +++++++
 src/qemu/qemu_monitor_json.c |   42 +++++++++++++++++++++
 src/qemu/qemu_monitor_json.h |    7 ++++
 src/qemu/qemu_monitor_text.c |   83 ++++++++++++++++++++++++++++++++++++++++++
 src/qemu/qemu_monitor_text.h |    7 ++++
 9 files changed, 226 insertions(+), 2 deletions(-)