x86: Factor out pc_new_cpu

At this point, this refactoring looks like overkill. But we will need it
for CPU hotplugging, and qemu-kvm already carries it. Merging it early
would help qemu-kvm when rebasing against upstream.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

hw/pc.c

@@ -1062,6 +1062,25 @@ int cpu_is_bsp(CPUState *env)
 	return env->cpuid_apic_id == 0;
 }
 
+static CPUState *pc_new_cpu(const char *cpu_model)
+{
+    CPUState *env;
+
+    env = cpu_init(cpu_model);
+    if (!env) {
+        fprintf(stderr, "Unable to find x86 CPU definition\n");
+        exit(1);
+    }
+    if ((env->cpuid_features & CPUID_APIC) || smp_cpus > 1) {
+        env->cpuid_apic_id = env->cpu_index;
+        /* APIC reset callback resets cpu */
+        apic_init(env);
+    } else {
+        qemu_register_reset((QEMUResetHandler*)cpu_reset, env);
+    }
+    return env;
+}
+
 /* PC hardware initialisation */
 static void pc_init1(ram_addr_t ram_size,
                      const char *boot_device,
@@ -1103,20 +1122,9 @@ static void pc_init1(ram_addr_t ram_size,
         cpu_model = "qemu32";
 #endif
     }
-    
-    for(i = 0; i < smp_cpus; i++) {
-        env = cpu_init(cpu_model);
-        if (!env) {
-            fprintf(stderr, "Unable to find x86 CPU definition\n");
-            exit(1);
-        }
-        if ((env->cpuid_features & CPUID_APIC) || smp_cpus > 1) {
-            env->cpuid_apic_id = env->cpu_index;
-            /* APIC reset callback resets cpu */
-            apic_init(env);
-        } else {
-            qemu_register_reset((QEMUResetHandler*)cpu_reset, env);
-        }
+
+    for (i = 0; i < smp_cpus; i++) {
+        env = pc_new_cpu(cpu_model);
     }
 
     vmport_init();