diff -r 966a6d3b7408 tools/ioemu/hw/tpm_tis.c
--- a/tools/ioemu/hw/tpm_tis.c	Fri Dec 14 11:50:24 2007 +0000
+++ b/tools/ioemu/hw/tpm_tis.c	Thu Dec 20 11:56:24 2007 +0900
@@ -904,6 +904,13 @@ void tpm_tis_init(SetIRQFunc *set_irq, v
     memset(s->buffer.buf,0,sizeof(s->buffer.buf));
 
     register_savevm("tpm-tis", 0, 1, tpm_save, tpm_load, s);
+
+    int ctr = 0;
+    while(!IS_COMM_WITH_VTPM(s) && ctr < 5){
+       open_vtpm_channel(s);
+       ctr++;
+       sleep(1);
+    }
 }
 
 /****************************************************************************/