diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/migration/register.h | 27 |
1 files changed, 15 insertions, 12 deletions
diff --git a/include/migration/register.h b/include/migration/register.h index a958a92a0f..a8dfd8fefd 100644 --- a/include/migration/register.h +++ b/include/migration/register.h @@ -47,22 +47,25 @@ typedef struct SaveVMHandlers { /* This runs outside the iothread lock! */ int (*save_setup)(QEMUFile *f, void *opaque); /* Note for save_live_pending: - * - res_precopy_only is for data which must be migrated in precopy phase - * or in stopped state, in other words - before target vm start - * - res_postcopy_only is for data which must be migrated in postcopy phase - * or in stopped state, in other words - after source vm stop + * must_precopy: + * - must be migrated in precopy or in stopped state + * - i.e. must be migrated before target start * - * Sum of res_postcopy_only and res_postcopy_only is the whole - * amount of pending data. + * can_postcopy: + * - can migrate in postcopy or in stopped state + * - i.e. can migrate after target start + * - some can also be migrated during precopy (RAM) + * - some must be migrated after source stops (block-dirty-bitmap) + * + * Sum of can_postcopy and must_postcopy is the whole amount of + * pending data. */ /* This estimates the remaining data to transfer */ - void (*state_pending_estimate)(void *opaque, - uint64_t *res_precopy_only, - uint64_t *res_postcopy_only); + void (*state_pending_estimate)(void *opaque, uint64_t *must_precopy, + uint64_t *can_postcopy); /* This calculate the exact remaining data to transfer */ - void (*state_pending_exact)(void *opaque, - uint64_t *res_precopy_only, - uint64_t *res_postcopy_only); + void (*state_pending_exact)(void *opaque, uint64_t *must_precopy, + uint64_t *can_postcopy); LoadStateHandler *load_state; int (*load_setup)(QEMUFile *f, void *opaque); int (*load_cleanup)(void *opaque); |