QOM CPUState refactorings

* Fix x86 cpu-add
 * Change KVM PMU behavior for 1.6
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Merge remote-tracking branch 'afaerber/tags/qom-cpu-for-anthony' into staging

QOM CPUState refactorings

* Fix x86 cpu-add
* Change KVM PMU behavior for 1.6

# gpg: Signature made Mon 29 Jul 2013 10:28:18 AM CDT using RSA key ID 3E7E013F
# gpg: Can't check signature: public key not found

# By Eduardo Habkost (2) and Andreas Färber (1)
# Via Andreas Färber
* afaerber/tags/qom-cpu-for-anthony:
  target-i386: Disable PMU CPUID leaf by default
  target-i386: Pass X86CPU object to cpu_x86_find_by_name()
  cpu: Partially revert "cpu: Change qemu_init_vcpu() argument to CPUState"

include/hw/i386/pc.h

@@ -235,6 +235,10 @@ int e820_add_entry(uint64_t, uint64_t, uint32_t);
             .driver   = "virtio-net-pci",\
             .property = "any_layout",\
             .value    = "off",\
+        },{\
+            .driver = TYPE_X86_CPU,\
+            .property = "pmu",\
+            .value = "on",\
         }
 
 #define PC_COMPAT_1_4 \

qom/cpu.c

@@ -228,8 +228,6 @@ static void cpu_common_realizefn(DeviceState *dev, Error **errp)
 {
     CPUState *cpu = CPU(dev);
 
-    qemu_init_vcpu(cpu);
-
     if (dev->hotplugged) {
         cpu_synchronize_post_init(cpu);
         notifier_list_notify(&cpu_added_notifiers, dev);

target-alpha/cpu.c

@@ -33,8 +33,11 @@ static void alpha_cpu_set_pc(CPUState *cs, vaddr value)
 
 static void alpha_cpu_realizefn(DeviceState *dev, Error **errp)
 {
+    CPUState *cs = CPU(dev);
     AlphaCPUClass *acc = ALPHA_CPU_GET_CLASS(dev);
 
+    qemu_init_vcpu(cs);
+
     acc->parent_realize(dev, errp);
 }
 

target-arm/cpu.c

@@ -159,6 +159,7 @@ static void arm_cpu_finalizefn(Object *obj)
 
 static void arm_cpu_realizefn(DeviceState *dev, Error **errp)
 {
+    CPUState *cs = CPU(dev);
     ARMCPU *cpu = ARM_CPU(dev);
     ARMCPUClass *acc = ARM_CPU_GET_CLASS(dev);
     CPUARMState *env = &cpu->env;
@@ -214,7 +215,8 @@ static void arm_cpu_realizefn(DeviceState *dev, Error **errp)
 
     init_cpreg_list(cpu);
 
-    cpu_reset(CPU(cpu));
+    cpu_reset(cs);
+    qemu_init_vcpu(cs);
 
     acc->parent_realize(dev, errp);
 }

target-cris/cpu.c

@@ -137,10 +137,11 @@ void cris_cpu_list(FILE *f, fprintf_function cpu_fprintf)
 
 static void cris_cpu_realizefn(DeviceState *dev, Error **errp)
 {
-    CRISCPU *cpu = CRIS_CPU(dev);
+    CPUState *cs = CPU(dev);
     CRISCPUClass *ccc = CRIS_CPU_GET_CLASS(dev);
 
-    cpu_reset(CPU(cpu));
+    cpu_reset(cs);
+    qemu_init_vcpu(cs);
 
     ccc->parent_realize(dev, errp);
 }

target-i386/cpu-qom.h

@@ -68,6 +68,13 @@ typedef struct X86CPU {
 
     /* Features that were filtered out because of missing host capabilities */
     uint32_t filtered_features[FEATURE_WORDS];
+
+    /* Enable PMU CPUID bits. This can't be enabled by default yet because
+     * it doesn't have ABI stability guarantees, as it passes all PMU CPUID
+     * bits returned by GET_SUPPORTED_CPUID (that depend on host CPU and kernel
+     * capabilities) directly to the guest.
+     */
+    bool enable_pmu;
 } X86CPU;
 
 static inline X86CPU *x86_env_get_cpu(CPUX86State *env)

target-i386/cpu.c

@@ -1475,9 +1475,11 @@ static void x86_cpu_get_feature_words(Object *obj, Visitor *v, void *opaque,
     error_propagate(errp, err);
 }
 
-static int cpu_x86_find_by_name(x86_def_t *x86_cpu_def, const char *name)
+static int cpu_x86_find_by_name(X86CPU *cpu, x86_def_t *x86_cpu_def,
+                                const char *name)
 {
     x86_def_t *def;
+    Error *err = NULL;
     int i;
 
     if (name == NULL) {
@@ -1485,6 +1487,8 @@ static int cpu_x86_find_by_name(x86_def_t *x86_cpu_def, const char *name)
     }
     if (kvm_enabled() && strcmp(name, "host") == 0) {
         kvm_cpu_fill_host(x86_cpu_def);
+        object_property_set_bool(OBJECT(cpu), true, "pmu", &err);
+        assert_no_error(err);
         return 0;
     }
 
@@ -1742,7 +1746,7 @@ static void cpu_x86_register(X86CPU *cpu, const char *name, Error **errp)
 
     memset(def, 0, sizeof(*def));
 
-    if (cpu_x86_find_by_name(def, name) < 0) {
+    if (cpu_x86_find_by_name(cpu, def, name) < 0) {
         error_setg(errp, "Unable to find CPU definition: %s", name);
         return;
     }
@@ -2016,7 +2020,7 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
         break;
     case 0xA:
         /* Architectural Performance Monitoring Leaf */
-        if (kvm_enabled()) {
+        if (kvm_enabled() && cpu->enable_pmu) {
             KVMState *s = cs->kvm_state;
 
             *eax = kvm_arch_get_supported_cpuid(s, 0xA, count, R_EAX);
@@ -2333,6 +2337,7 @@ static void x86_cpu_apic_realize(X86CPU *cpu, Error **errp)
 
 static void x86_cpu_realizefn(DeviceState *dev, Error **errp)
 {
+    CPUState *cs = CPU(dev);
     X86CPU *cpu = X86_CPU(dev);
     X86CPUClass *xcc = X86_CPU_GET_CLASS(dev);
     CPUX86State *env = &cpu->env;
@@ -2387,12 +2392,13 @@ static void x86_cpu_realizefn(DeviceState *dev, Error **errp)
 #endif
 
     mce_init(cpu);
+    qemu_init_vcpu(cs);
 
     x86_cpu_apic_realize(cpu, &local_err);
     if (local_err != NULL) {
         goto out;
     }
-    cpu_reset(CPU(cpu));
+    cpu_reset(cs);
 
     xcc->parent_realize(dev, &local_err);
 out:
@@ -2520,6 +2526,11 @@ static void x86_cpu_synchronize_from_tb(CPUState *cs, TranslationBlock *tb)
     cpu->env.eip = tb->pc - tb->cs_base;
 }
 
+static Property x86_cpu_properties[] = {
+    DEFINE_PROP_BOOL("pmu", X86CPU, enable_pmu, false),
+    DEFINE_PROP_END_OF_LIST()
+};
+
 static void x86_cpu_common_class_init(ObjectClass *oc, void *data)
 {
     X86CPUClass *xcc = X86_CPU_CLASS(oc);
@@ -2529,6 +2540,7 @@ static void x86_cpu_common_class_init(ObjectClass *oc, void *data)
     xcc->parent_realize = dc->realize;
     dc->realize = x86_cpu_realizefn;
     dc->bus_type = TYPE_ICC_BUS;
+    dc->props = x86_cpu_properties;
 
     xcc->parent_reset = cc->reset;
     cc->reset = x86_cpu_reset;

target-lm32/cpu.c

@@ -46,10 +46,12 @@ static void lm32_cpu_reset(CPUState *s)
 
 static void lm32_cpu_realizefn(DeviceState *dev, Error **errp)
 {
-    LM32CPU *cpu = LM32_CPU(dev);
+    CPUState *cs = CPU(dev);
     LM32CPUClass *lcc = LM32_CPU_GET_CLASS(dev);
 
-    cpu_reset(CPU(cpu));
+    cpu_reset(cs);
+
+    qemu_init_vcpu(cs);
 
     lcc->parent_realize(dev, errp);
 }

target-m68k/cpu.c

@@ -143,12 +143,14 @@ static const M68kCPUInfo m68k_cpus[] = {
 
 static void m68k_cpu_realizefn(DeviceState *dev, Error **errp)
 {
+    CPUState *cs = CPU(dev);
     M68kCPU *cpu = M68K_CPU(dev);
     M68kCPUClass *mcc = M68K_CPU_GET_CLASS(dev);
 
     m68k_cpu_init_gdb(cpu);
 
-    cpu_reset(CPU(cpu));
+    cpu_reset(cs);
+    qemu_init_vcpu(cs);
 
     mcc->parent_realize(dev, errp);
 }

target-microblaze/cpu.c

@@ -90,10 +90,11 @@ static void mb_cpu_reset(CPUState *s)
 
 static void mb_cpu_realizefn(DeviceState *dev, Error **errp)
 {
-    MicroBlazeCPU *cpu = MICROBLAZE_CPU(dev);
+    CPUState *cs = CPU(dev);
     MicroBlazeCPUClass *mcc = MICROBLAZE_CPU_GET_CLASS(dev);
 
-    cpu_reset(CPU(cpu));
+    cpu_reset(cs);
+    qemu_init_vcpu(cs);
 
     mcc->parent_realize(dev, errp);
 }

target-mips/cpu.c

@@ -62,10 +62,11 @@ static void mips_cpu_reset(CPUState *s)
 
 static void mips_cpu_realizefn(DeviceState *dev, Error **errp)
 {
-    MIPSCPU *cpu = MIPS_CPU(dev);
+    CPUState *cs = CPU(dev);
     MIPSCPUClass *mcc = MIPS_CPU_GET_CLASS(dev);
 
-    cpu_reset(CPU(cpu));
+    cpu_reset(cs);
+    qemu_init_vcpu(cs);
 
     mcc->parent_realize(dev, errp);
 }

target-moxie/cpu.c

@@ -45,10 +45,11 @@ static void moxie_cpu_reset(CPUState *s)
 
 static void moxie_cpu_realizefn(DeviceState *dev, Error **errp)
 {
-    MoxieCPU *cpu = MOXIE_CPU(dev);
+    CPUState *cs = CPU(dev);
     MoxieCPUClass *mcc = MOXIE_CPU_GET_CLASS(dev);
 
-    cpu_reset(CPU(cpu));
+    qemu_init_vcpu(cs);
+    cpu_reset(cs);
 
     mcc->parent_realize(dev, errp);
 }

target-openrisc/cpu.c

@@ -66,10 +66,11 @@ static inline void set_feature(OpenRISCCPU *cpu, int feature)
 
 static void openrisc_cpu_realizefn(DeviceState *dev, Error **errp)
 {
-    OpenRISCCPU *cpu = OPENRISC_CPU(dev);
+    CPUState *cs = CPU(dev);
     OpenRISCCPUClass *occ = OPENRISC_CPU_GET_CLASS(dev);
 
-    cpu_reset(CPU(cpu));
+    qemu_init_vcpu(cs);
+    cpu_reset(cs);
 
     occ->parent_realize(dev, errp);
 }

target-ppc/translate_init.c

@@ -7861,6 +7861,8 @@ static void ppc_cpu_realizefn(DeviceState *dev, Error **errp)
                                  34, "power-spe.xml", 0);
     }
 
+    qemu_init_vcpu(cs);
+
     pcc->parent_realize(dev, errp);
 
 #if defined(PPC_DUMP_CPU)

target-s390x/cpu.c

@@ -101,10 +101,11 @@ static void s390_cpu_machine_reset_cb(void *opaque)
 
 static void s390_cpu_realizefn(DeviceState *dev, Error **errp)
 {
-    S390CPU *cpu = S390_CPU(dev);
+    CPUState *cs = CPU(dev);
     S390CPUClass *scc = S390_CPU_GET_CLASS(dev);
 
-    cpu_reset(CPU(cpu));
+    qemu_init_vcpu(cs);
+    cpu_reset(cs);
 
     scc->parent_realize(dev, errp);
 }

target-sh4/cpu.c

@@ -240,10 +240,11 @@ static const TypeInfo sh7785_type_info = {
 
 static void superh_cpu_realizefn(DeviceState *dev, Error **errp)
 {
-    SuperHCPU *cpu = SUPERH_CPU(dev);
+    CPUState *cs = CPU(dev);
     SuperHCPUClass *scc = SUPERH_CPU_GET_CLASS(dev);
 
-    cpu_reset(CPU(cpu));
+    cpu_reset(cs);
+    qemu_init_vcpu(cs);
 
     scc->parent_realize(dev, errp);
 }

target-sparc/cpu.c

@@ -743,6 +743,8 @@ static void sparc_cpu_realizefn(DeviceState *dev, Error **errp)
 {
     SPARCCPUClass *scc = SPARC_CPU_GET_CLASS(dev);
 
+    qemu_init_vcpu(CPU(dev));
+
     scc->parent_realize(dev, errp);
 }
 

target-unicore32/cpu.c

@@ -92,6 +92,8 @@ static void uc32_cpu_realizefn(DeviceState *dev, Error **errp)
 {
     UniCore32CPUClass *ucc = UNICORE32_CPU_GET_CLASS(dev);
 
+    qemu_init_vcpu(CPU(dev));
+
     ucc->parent_realize(dev, errp);
 }
 

target-xtensa/cpu.c

@@ -90,6 +90,8 @@ static void xtensa_cpu_realizefn(DeviceState *dev, Error **errp)
 
     cs->gdb_num_regs = xcc->config->gdb_regmap.num_regs;
 
+    qemu_init_vcpu(cs);
+
     xcc->parent_realize(dev, errp);
 }