On 12/8/25 4:08 AM, Cédric Le Goater wrote:
Hello,
Ben, Mark,
Since Steve retired, we have generic names under the "CheckPoint and
Restart (CPR)" entry in MAINTAINERS. Would you be willing to step forward
as Reviewers/Maintainers ?
You can add me as a Reviewer.
Thanks/regards,
-Mark
Also, do you have a gitlab account so we can copy you on any reported
issues [1] ?
Thanks,
C.
[1] https://gitlab.com/qemu-project/qemu/-/issues/3235
On 12/3/25 19:51, Ben Chaney wrote:
Changes since v2
- I have taken over this patch set since Steve retired
- Added comments to explain the order of events
- Remove redundant reversion to cleanup git history
- Inclusion of virtio and stub fixes
Tap and vhost devices can be preserved during cpr-transfer using
traditional live migration methods, wherein the management layer
creates new interfaces for the target and fiddles with 'ip link'
to deactivate the old interface and activate the new.
However, CPR can simply send the file descriptors to new QEMU,
with no special management actions required. The user enables
this behavior by specifing '-netdev tap,cpr=on'. The default
is cpr=off.
Signed-off-by: Ben Chaney <[email protected]>
---
Steve Sistare (8):
migration: stop vm earlier for cpr
migration: cpr setup notifier
vhost: reset vhost devices for cpr
cpr: delete all fds
tap: common return label
tap: cpr support
tap: postload fix for cpr
tap: cpr fixes
hw/net/virtio-net.c | 26 +++++++
hw/vfio/device.c | 2 +-
hw/virtio/vhost-backend.c | 6 ++
hw/virtio/vhost.c | 32 +++++++++
include/hw/virtio/vhost-backend.h | 1 +
include/hw/virtio/vhost.h | 1 +
include/migration/cpr.h | 3 +-
include/net/tap.h | 1 +
io/channel-socket.c | 4 +-
migration/cpr.c | 24 +++++--
migration/migration.c | 69 ++++++++++++++----
net/tap-win32.c | 5 ++
net/tap.c | 147
+++++++++++++++++++++++++++++---------
qapi/net.json | 5 +-
stubs/cpr.c | 8 +++
stubs/meson.build | 1 +
16 files changed, 279 insertions(+), 56 deletions(-)
---
base-commit: 9febfa94b69b7146582c48a868bd2330ac45037f
change-id: 20251203-cpr-tap-04fd811ace03
Best regards,
