In qemu>=8.1, the dirty-limit functionality for live
migration was included. In the live migration
scenario, it implements the force convergence
using the dirty-limit approach, which results in
better reliable read performance. A straightforward
dirty-limit capability for live migration is added by
this patchset. Users might not care about other
dirty-limit arguments like "x-vcpu-dirty-limit-period"
or "vcpu-dirty-limit," thus do not expose them to
Libvirt and leave the default settings in place.
values as default. For more details about dirty-limit.
please see the following reference:
https://lore.kernel.org/qemu-
devel/169024923116.19090.10825599068950039132-0@git.sr.ht/

Please review,
thanks, Yong

Hyman Huang (4):
  Add VIR_MIGRATE_DIRTY_LIMIT flag
  qemu_migration: Implement VIR_MIGRATE_DIRTY_LIMIT flag
  virsh: Add support for VIR_MIGRATE_DIRTY_LIMIT flag
  NEWS: document support for dirty-limit live migration

 NEWS.rst                         |  8 ++++++++
 docs/manpages/virsh.rst          | 10 +++++++++-
 include/libvirt/libvirt-domain.h |  5 +++++
 src/libvirt-domain.c             |  8 ++++++++
 src/qemu/qemu_migration.c        |  8 ++++++++
 src/qemu/qemu_migration.h        |  1 +
 src/qemu/qemu_migration_params.c |  6 ++++++
 src/qemu/qemu_migration_params.h |  1 +
 tools/virsh-domain.c             | 10 ++++++++++
 9 files changed, 56 insertions(+), 1 deletion(-)

--
2.38.5