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migration/ram: Factor out check for advised postcopy

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Let's factor out this check, to be used in virtio-mem context next.

While at it, fix a spelling error in a related comment.

Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>S
Signed-off-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
David Hildenbrand 2023-01-17 12:22:46 +01:00 committed by Juan Quintela
parent 508f7988fd
commit 80fe315c38
3 changed files with 11 additions and 8 deletions
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4
include/migration/misc.h
View file

@ -67,8 +67,10 @@ bool migration_has_failed(MigrationState *);
/* ...and after the device transmission */
bool migration_in_postcopy_after_devices(MigrationState *);
void migration_global_dump(Monitor *mon);
/* True if incomming migration entered POSTCOPY_INCOMING_DISCARD */
/* True if incoming migration entered POSTCOPY_INCOMING_DISCARD */
bool migration_in_incoming_postcopy(void);
/* True if incoming migration entered POSTCOPY_INCOMING_ADVISE */
bool migration_incoming_postcopy_advised(void);
/* True if background snapshot is active */
bool migration_in_bg_snapshot(void);

7
migration/migration.c
View file

@ -2126,6 +2126,13 @@ bool migration_in_incoming_postcopy(void)
return ps >= POSTCOPY_INCOMING_DISCARD && ps < POSTCOPY_INCOMING_END;
}
bool migration_incoming_postcopy_advised(void)
{
PostcopyState ps = postcopy_state_get();
return ps >= POSTCOPY_INCOMING_ADVISE && ps < POSTCOPY_INCOMING_END;
}
bool migration_in_bg_snapshot(void)
{
MigrationState *s = migrate_get_current();

8
migration/ram.c
View file

@ -4150,12 +4150,6 @@ int ram_load_postcopy(QEMUFile *f, int channel)
return ret;
}
static bool postcopy_is_advised(void)
{
PostcopyState ps = postcopy_state_get();
return ps >= POSTCOPY_INCOMING_ADVISE && ps < POSTCOPY_INCOMING_END;
}
static bool postcopy_is_running(void)
{
PostcopyState ps = postcopy_state_get();
@ -4226,7 +4220,7 @@ static int ram_load_precopy(QEMUFile *f)
MigrationIncomingState *mis = migration_incoming_get_current();
int flags = 0, ret = 0, invalid_flags = 0, len = 0, i = 0;
/* ADVISE is earlier, it shows the source has the postcopy capability on */
bool postcopy_advised = postcopy_is_advised();
bool postcopy_advised = migration_incoming_postcopy_advised();
if (!migrate_use_compression()) {
invalid_flags |= RAM_SAVE_FLAG_COMPRESS_PAGE;
}