[PATCH v8 7/7] Qemu-Xen-vTPM: QEMU machine class is initialized before tpm_init()

[Quan Xu <quan.xu@intel.com>]

make sure QEMU machine class is initialized and QEMU has registered
Xen stubdom vTPM driver when call tpm_init()

Signed-off-by: Quan Xu <quan.xu@intel.com>
Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
---
 vl.c | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/vl.c b/vl.c
index 74c2681..7bc87f1 100644
--- a/vl.c
+++ b/vl.c
@@ -4131,12 +4131,6 @@ int main(int argc, char **argv, char **envp)
         exit(1);
     }
 
-#ifdef CONFIG_TPM
-    if (tpm_init() < 0) {
-        exit(1);
-    }
-#endif
-
     /* init the bluetooth world */
     if (foreach_device_config(DEV_BT, bt_parse))
         exit(1);
@@ -4239,6 +4233,17 @@ int main(int argc, char **argv, char **envp)
             exit(1);
     }
 
+    /*
+     * For compatible with Xen stubdom vTPM driver, make
+     * sure QEMU machine class is initialized and QEMU has
+     * registered Xen stubdom vTPM driver.
+     */
+#ifdef CONFIG_TPM
+    if (tpm_init() < 0) {
+        exit(1);
+    }
+#endif
+
     /* init generic devices */
     if (qemu_opts_foreach(qemu_find_opts("device"), device_init_func, NULL, 1) != 0)
         exit(1);
-- 
1.8.3.2