linux-user: Use X86CPU property to retrieve CPUID family

Avoids duplicating the calculation.
Reviewed-by: NIgor Mammedov <imammedo@redhat.com>
Signed-off-by: NAndreas Färber <afaerber@suse.de>

linux-user/cpu-uname.c

@@ -55,12 +55,14 @@ const char *cpu_to_uname_machine(void *cpu_env)
     return "x86-64";
 #elif defined(TARGET_I386)
     /* see arch/x86/kernel/cpu/bugs.c: check_bugs(), 386, 486, 586, 686 */
-    uint32_t cpuid_version = ((CPUX86State *)cpu_env)->cpuid_version;
-    int family = ((cpuid_version >> 8) & 0x0f) + ((cpuid_version >> 20) & 0xff);
-    if (family == 4)
+    CPUState *cpu = ENV_GET_CPU((CPUX86State *)cpu_env);
+    int family = object_property_get_int(OBJECT(cpu), "family", NULL);
+    if (family == 4) {
         return "i486";
-    if (family == 5)
+    }
+    if (family == 5) {
         return "i586";
+    }
     return "i686";
 #else
     /* default is #define-d in each arch/ subdir */