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Split header writing out of qemu_savevm_state_begin

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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: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Dr. David Alan Gilbert 2015-05-21 13:24:12 +01:00 • committed by Juan Quintela
parent b3af1bc9d2
commit f796baa1b3
4 changed files with 11 additions and 3 deletions
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11
migration/savevm.c
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@ -625,6 +625,13 @@ bool qemu_savevm_state_blocked(Error **errp)
return false;
}
void qemu_savevm_state_header(QEMUFile *f)
{
trace_savevm_state_header();
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_mutex_unlock_iothread();
qemu_savevm_state_header(f);
qemu_savevm_state_begin(f, &params);
qemu_mutex_lock_iothread();