target-ppc: Make host CPU a subclass of the host's CPU model

This avoids assigning individual class fields and contributors
forgetting to add field assignments in KVM-only code.

ppc_cpu_class_find_by_pvr() requires the CPU model classes to be
registered, so defer host CPU type registration to kvm_arch_init().

Only register the host CPU type if there is a class with matching PVR.
This lets us drop error handling from instance_init.

Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Alexander Graf <agraf@suse.de>

1 files changed, 8 insertions, 7 deletions

diff --git a/target-ppc/translate_init.c b/target-ppc/translate_init.c
index 1783c22..521cdcc 100644
--- a/target-ppc/translate_init.c
+++ b/target-ppc/translate_init.c
@@ -8298,13 +8298,6 @@ static ObjectClass *ppc_cpu_class_by_name(const char *name)
     const char *p;
     int i, len;
 
-    if (strcasecmp(name, "host") == 0) {
-        if (kvm_enabled()) {
-            ret = object_class_by_name(TYPE_HOST_POWERPC_CPU);
-        }
-        return ret;
-    }
-
     /* Check if the given name is a PVR */
     len = strlen(name);
     if (len == 10 && name[0] == '0' && name[1] == 'x') {
@@ -8405,6 +8398,9 @@ static void ppc_cpu_list_entry(gpointer data, gpointer user_data)
         return;
     }
 #endif
+    if (unlikely(strcmp(typename, TYPE_HOST_POWERPC_CPU) == 0)) {
+        return;
+    }
 
     name = g_strndup(typename,
                      strlen(typename) - strlen("-" TYPE_POWERPC_CPU));
@@ -8427,6 +8423,11 @@ void ppc_cpu_list(FILE *f, fprintf_function cpu_fprintf)
     g_slist_foreach(list, ppc_cpu_list_entry, &s);
     g_slist_free(list);
 
+#ifdef CONFIG_KVM
+    cpu_fprintf(f, "\n");
+    cpu_fprintf(f, "PowerPC %-16s\n", "host");
+#endif
+
     cpu_fprintf(f, "\n");
     for (i = 0; i < ARRAY_SIZE(ppc_cpu_aliases); i++) {
         ObjectClass *oc = ppc_cpu_class_by_name(ppc_cpu_aliases[i].model);