[Xen-changelog] [xen-unstable] hvm: Fix TPMD and QEMU connection

[Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1198147386 0
# Node ID 6730dfe7ec692efeadb06fe8abf1e4be33338ecb
# Parent  d0052f37363c7beccc2694ec7dcfcbf95e69fde0
hvm: Fix TPMD and QEMU connection

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>
---
 tools/ioemu/hw/tpm_tis.c |    5 +++++
 1 files changed, 5 insertions(+)

diff -r d0052f37363c -r 6730dfe7ec69 tools/ioemu/hw/tpm_tis.c
--- a/tools/ioemu/hw/tpm_tis.c  Thu Dec 20 10:35:22 2007 +0000
+++ b/tools/ioemu/hw/tpm_tis.c  Thu Dec 20 10:43:06 2007 +0000
@@ -904,6 +904,11 @@ 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);
+
+    for (c = 0; !IS_COMM_WITH_VTPM(s) && (c < 5); c++) {
+       open_vtpm_channel(s);
+       sleep(1);
+    }
 }
 
 /****************************************************************************/

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