vtpm: Decrease amount of pages on shared ring.

Decrease the amount of shared pages on the ring to only one page -
more is not needed.

Signed-off-by: Stefan Berger <stefanb@us.ibm.com>

diff --git a/xen/include/public/io/tpmif.h b/xen/include/public/io/tpmif.h
index 220671d3edf5e1387452c7fca03125bd0af9b167..02ccdab4713f03e5e52b12da39fde089509eec34 100644 (file)
--- a/xen/include/public/io/tpmif.h
+++ b/xen/include/public/io/tpmif.h
@@ -50,7 +50,7 @@ typedef struct tpmif_tx_request tpmif_tx_request_t;
  */
 typedef uint32_t TPMIF_RING_IDX;
 
-#define TPMIF_TX_RING_SIZE 10
+#define TPMIF_TX_RING_SIZE 1
 
 /* This structure must fit in a memory page. */