[Xen-devel] [PATCH][BIOS]Fix TPMD and QEMU connection

[Kouichi Yasaki <yasaki.kouichi@xxxxxxxxxxxxxx>]

Hi,

In HVM domain, MA_Transmit function in tcgbios sometimes become an error
(TCG_NO_RESPONSE). The cause of the error is not to make connection of
QEMU and TPMD instance within a timeout of MA_Transmit function.

Before the MA_Transmit function was called, the attached patch corrected so
that connection of QEMU and TPMD might be completed.

Signed-off-by: Kouichi YASAKI <yasaki.kouichi@xxxxxxxxxxxxxx>

Thanks
  Kouichi YASAKI

diff -r d9ab9eb2bfee tools/ioemu/hw/tpm_tis.c
--- a/tools/ioemu/hw/tpm_tis.c  Sat Dec 15 18:29:27 2007 +0000
+++ b/tools/ioemu/hw/tpm_tis.c  Mon Dec 17 19:46:42 2007 +0900
@@ -904,6 +904,10 @@ 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);
+
+    while(!IS_COMM_WITH_VTPM(s)){
+       open_vtpm_channel(s);
+    }
 }
 
 /****************************************************************************/

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