Prasad Pandit <[email protected]> writes: > From: Peter Xu <[email protected]> > > Add a savevm handler for a module to opt-in sending extra sections right > before postcopy starts, and before VM is stopped. > > RAM will start to use this new savevm handler in the next patch to do flush > and sync for multifd pages. > > Note that we choose to do it before VM stopped because the current only > potential user is not sensitive to VM status, so doing it before VM is > stopped is preferred to enlarge any postcopy downtime. > > It is still a bit unfortunate that we need to introduce such a new savevm > handler just for the only use case, however it's so far the cleanest. > > Signed-off-by: Peter Xu <[email protected]> > Signed-off-by: Prasad Pandit <[email protected]>
Reviewed-by: Fabiano Rosas <[email protected]>
