qapi: flatten GuestPanicInformation union

Signed-off-by: NAnton Nefedov <anton.nefedov@virtuozzo.com>
Signed-off-by: NDenis V. Lunev <den@openvz.org>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Eric Blake <eblake@redhat.com>
Message-Id: <1487614915-18710-3-git-send-email-den@openvz.org>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

qapi-schema.json

@@ -5914,6 +5914,16 @@
 { 'enum': 'GuestPanicAction',
   'data': [ 'pause', 'poweroff' ] }
 
+##
+# @GuestPanicInformationType:
+#
+# An enumeration of the guest panic information types
+#
+# Since: 2.9
+##
+{ 'enum': 'GuestPanicInformationType',
+  'data': [ 'hyper-v'] }
+
 ##
 # @GuestPanicInformation:
 #
@@ -5922,6 +5932,8 @@
 # Since: 2.9
 ##
 {'union': 'GuestPanicInformation',
+ 'base': {'type': 'GuestPanicInformationType'},
+ 'discriminator': 'type',
  'data': { 'hyper-v': 'GuestPanicInformationHyperV' } }
 
 ##

target/i386/cpu.c

@@ -3778,19 +3778,16 @@ static GuestPanicInformation *x86_cpu_get_crash_info(CPUState *cs)
     GuestPanicInformation *panic_info = NULL;
 
     if (env->features[FEAT_HYPERV_EDX] & HV_X64_GUEST_CRASH_MSR_AVAILABLE) {
-        GuestPanicInformationHyperV *panic_info_hv =
-            g_malloc0(sizeof(GuestPanicInformationHyperV));
         panic_info = g_malloc0(sizeof(GuestPanicInformation));
 
-        panic_info->type = GUEST_PANIC_INFORMATION_KIND_HYPER_V;
-        panic_info->u.hyper_v.data = panic_info_hv;
+        panic_info->type = GUEST_PANIC_INFORMATION_TYPE_HYPER_V;
 
         assert(HV_X64_MSR_CRASH_PARAMS >= 5);
-        panic_info_hv->arg1 = env->msr_hv_crash_params[0];
-        panic_info_hv->arg2 = env->msr_hv_crash_params[1];
-        panic_info_hv->arg3 = env->msr_hv_crash_params[2];
-        panic_info_hv->arg4 = env->msr_hv_crash_params[3];
-        panic_info_hv->arg5 = env->msr_hv_crash_params[4];
+        panic_info->u.hyper_v.arg1 = env->msr_hv_crash_params[0];
+        panic_info->u.hyper_v.arg2 = env->msr_hv_crash_params[1];
+        panic_info->u.hyper_v.arg3 = env->msr_hv_crash_params[2];
+        panic_info->u.hyper_v.arg4 = env->msr_hv_crash_params[3];
+        panic_info->u.hyper_v.arg5 = env->msr_hv_crash_params[4];
     }
 
     return panic_info;

vl.c

@@ -1717,14 +1717,14 @@ void qemu_system_guest_panicked(GuestPanicInformation *info)
     }
 
     if (info) {
-        if (info->type == GUEST_PANIC_INFORMATION_KIND_HYPER_V) {
+        if (info->type == GUEST_PANIC_INFORMATION_TYPE_HYPER_V) {
             qemu_log_mask(LOG_GUEST_ERROR, "HV crash parameters: (%#"PRIx64
                           " %#"PRIx64" %#"PRIx64" %#"PRIx64" %#"PRIx64")\n",
-                          info->u.hyper_v.data->arg1,
-                          info->u.hyper_v.data->arg2,
-                          info->u.hyper_v.data->arg3,
-                          info->u.hyper_v.data->arg4,
-                          info->u.hyper_v.data->arg5);
+                          info->u.hyper_v.arg1,
+                          info->u.hyper_v.arg2,
+                          info->u.hyper_v.arg3,
+                          info->u.hyper_v.arg4,
+                          info->u.hyper_v.arg5);
         }
         qapi_free_GuestPanicInformation(info);
     }