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migration/postcopy: mis->have_listen_thread check will never be touched 

If mis->have_listen_thread is true, this means current PostcopyState
must be LISTENING or RUNNING. While the check at the beginning of the
function makes sure the state transaction happens when its previous
PostcopyState is ADVISE or DISCARD.

This means we would never touch this check.

Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>
Message-Id: <20191006000249.29926-2-richardw.yang@linux.intel.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
This commit is contained in:
Wei Yang 2019-10-06 08:02:47 +08:00 committed by Dr. David Alan Gilbert
parent 4991f3091e
commit 2a461c2467
1 changed files with 0 additions and 5 deletions
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5
migration/savevm.c
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@ -1878,11 +1878,6 @@ static int loadvm_postcopy_handle_listen(MigrationIncomingState *mis)
return -1;
}
if (mis->have_listen_thread) {
error_report("CMD_POSTCOPY_RAM_LISTEN already has a listen thread");
return -1;
}
mis->have_listen_thread = true;
/* Start up the listening thread and wait for it to signal ready */
qemu_sem_init(&mis->listen_thread_sem, 0);