Commit f796baa1 authored by Dr. David Alan Gilbert's avatar Dr. David Alan Gilbert Committed by Juan Quintela

Split header writing out of qemu_savevm_state_begin

Split qemu_savevm_state_begin to:
  qemu_savevm_state_header   That writes the initial file header.
  qemu_savevm_state_begin    That sets up devices and does the first
                             device pass.

Used later in postcopy.
Signed-off-by: default avatarDr. David Alan Gilbert <>
Reviewed-by: default avatarAmit Shah <>
Reviewed-by: default avatarDavid Gibson <>
Reviewed-by: default avatarJuan Quintela <>
Signed-off-by: default avatarJuan Quintela <>
parent b3af1bc9
......@@ -84,6 +84,7 @@ void qemu_announce_self(void);
bool qemu_savevm_state_blocked(Error **errp);
void qemu_savevm_state_begin(QEMUFile *f,
const MigrationParams *params);
void qemu_savevm_state_header(QEMUFile *f);
int qemu_savevm_state_iterate(QEMUFile *f);
void qemu_savevm_state_complete(QEMUFile *f);
void qemu_savevm_state_cancel(void);
......@@ -738,6 +738,7 @@ static void *migration_thread(void *opaque)
int64_t start_time = initial_time;
bool old_vm_running = false;
qemu_savevm_state_begin(s->file, &s->params);
s->setup_time = qemu_clock_get_ms(QEMU_CLOCK_HOST) - setup_start;
......@@ -625,6 +625,13 @@ bool qemu_savevm_state_blocked(Error **errp)
return false;
void qemu_savevm_state_header(QEMUFile *f)
qemu_put_be32(f, QEMU_VM_FILE_MAGIC);
qemu_put_be32(f, QEMU_VM_FILE_VERSION);
void qemu_savevm_state_begin(QEMUFile *f,
const MigrationParams *params)
......@@ -639,9 +646,6 @@ void qemu_savevm_state_begin(QEMUFile *f,
se->ops->set_params(params, se->opaque);
qemu_put_be32(f, QEMU_VM_FILE_MAGIC);
qemu_put_be32(f, QEMU_VM_FILE_VERSION);
QTAILQ_FOREACH(se, &savevm_state.handlers, entry) {
int len;
......@@ -851,6 +855,7 @@ static int qemu_savevm_state(QEMUFile *f, Error **errp)
qemu_savevm_state_begin(f, &params);
......@@ -1186,6 +1186,7 @@ qemu_loadvm_state_section_startfull(uint32_t section_id, const char *idstr, uint
savevm_section_start(const char *id, unsigned int section_id) "%s, section_id %u"
savevm_section_end(const char *id, unsigned int section_id, int ret) "%s, section_id %u -> %d"
savevm_state_begin(void) ""
savevm_state_header(void) ""
savevm_state_iterate(void) ""
savevm_state_complete(void) ""
savevm_state_cancel(void) ""
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