V4 series adding support for QEMU's mapped-ram stream format [1] and
migration capability. The use of mapped-ram is controlled by extending
save_image_format setting in qemu.conf with a new 'sparse' option. The
'raw' format continues to be the default.

Also included are patches that leverage mapped-ram to add support for
parallel save/restore.

Changes in V4:
* Rebased on latest master, including the series
  "qemu: Support specifying save image format"

V1:
https://lists.libvirt.org/archives/list/devel@lists.libvirt.org/message/MNBHGQH7PKV4RXQZXLPAGMOTNEVR3JVS/

V2:
https://lists.libvirt.org/archives/list/devel@lists.libvirt.org/message/GNJNAXSB77PNUKOZ7Q4D5RVF23SAVMDN/

V3:
https://lists.libvirt.org/archives/list/devel@lists.libvirt.org/message/SK2PSRXO4MPKRZLP74GR4J2EUVI5VVHW/

[1] https://gitlab.com/qemu-project/qemu/-/blob/master/docs/devel/migration/mapped-ram.rst?ref_type=heads

Claudio Fontana (3):
  include: Define constants for parallel save/restore
  tools: add parallel parameter to virsh save command
  tools: add parallel parameter to virsh restore command

Jim Fehlig (15):
  lib: virDomain{Save,Restore}Params: Ensure absolute path
  qemu: Add function to get FDPass object from monitor
  qemu: Add function to check capability in migration params
  qemu: Add function to get bool value from migration params
  qemu: Add mapped-ram migration capability
  qemu: Add function to get migration params for save
  qemu_saveimage: add "sparse" to supported save image formats
  qemu: Add helper function for creating save image fd
  qemu: Add support for mapped-ram on save
  qemu: Move creation of qemuProcessIncomingDef struct
  qemu: Apply migration parameters in qemuMigrationDstRun
  qemu: Add support for mapped-ram on restore
  qemu: Support O_DIRECT with mapped-ram on save
  qemu: Support O_DIRECT with mapped-ram on restore
  qemu: Add support for parallel save and restore

 docs/manpages/virsh.rst          |  21 +++-
 include/libvirt/libvirt-domain.h |  11 ++
 src/libvirt-domain.c             |  92 +++++++++++---
 src/qemu/qemu.conf.in            |   9 +-
 src/qemu/qemu_driver.c           |  78 +++++++++---
 src/qemu/qemu_fd.c               |  46 +++++++
 src/qemu/qemu_fd.h               |   4 +
 src/qemu/qemu_migration.c        | 204 ++++++++++++++++++++++---------
 src/qemu/qemu_migration.h        |  10 +-
 src/qemu/qemu_migration_params.c |  92 ++++++++++++++
 src/qemu/qemu_migration_params.h |  17 +++
 src/qemu/qemu_monitor.c          |  37 ++++++
 src/qemu/qemu_monitor.h          |   5 +
 src/qemu/qemu_process.c          | 100 ++++++++++-----
 src/qemu/qemu_process.h          |  19 ++-
 src/qemu/qemu_saveimage.c        | 120 ++++++++++++------
 src/qemu/qemu_saveimage.h        |   4 +
 src/qemu/qemu_snapshot.c         |  15 ++-
 tools/virsh-domain.c             |  81 ++++++++++--
 19 files changed, 775 insertions(+), 190 deletions(-)

-- 
2.43.0