Merge remote-tracking branch 'remotes/ehabkost/tags/x86-and-machine-pull-request' into staging

x86 and machine queue for 5.0 soft freeze

Bug fixes:
* memory encryption: Disable mem merge
  (Dr. David Alan Gilbert)

Features:
* New EPYC CPU definitions (Babu Moger)
* Denventon-v2 CPU model (Tao Xu)
* New 'note' field on versioned CPU models (Tao Xu)

Cleanups:
* x86 CPU topology cleanups (Babu Moger)
* cpu: Use DeviceClass reset instead of a special CPUClass reset
  (Peter Maydell)

# gpg: Signature made Wed 18 Mar 2020 01:16:43 GMT
# gpg:                using RSA key 5A322FD5ABC4D3DBACCFD1AA2807936F984DC5A6
# gpg:                issuer "ehabkost@redhat.com"
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>" [full]
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF  D1AA 2807 936F 984D C5A6

* remotes/ehabkost/tags/x86-and-machine-pull-request:
  hw/i386: Rename apicid_from_topo_ids to x86_apicid_from_topo_ids
  hw/i386: Update structures to save the number of nodes per package
  hw/i386: Remove unnecessary initialization in x86_cpu_new
  machine: Add SMP Sockets in CpuTopology
  hw/i386: Consolidate topology functions
  hw/i386: Introduce X86CPUTopoInfo to contain topology info
  cpu: Use DeviceClass reset instead of a special CPUClass reset
  machine/memory encryption: Disable mem merge
  hw/i386: Rename X86CPUTopoInfo structure to X86CPUTopoIDs
  i386: Add 2nd Generation AMD EPYC processors
  i386: Add missing cpu feature bits in EPYC model
  target/i386: Add new property note to versioned CPU models
  target/i386: Add Denverton-v2 (no MPX) CPU model

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

50 files changed, 490 insertions, 279 deletions

diff --git a/hw/core/cpu.c b/hw/core/cpu.c
index 3b2363f043..786a1bec8a 100644
--- a/hw/core/cpu.c
+++ b/hw/core/cpu.c
@@ -239,27 +239,16 @@ void cpu_dump_statistics(CPUState *cpu, int flags)
     }
 }
 
-void cpu_class_set_parent_reset(CPUClass *cc,
-                                void (*child_reset)(CPUState *cpu),
-                                void (**parent_reset)(CPUState *cpu))
-{
-    *parent_reset = cc->reset;
-    cc->reset = child_reset;
-}
-
 void cpu_reset(CPUState *cpu)
 {
-    CPUClass *klass = CPU_GET_CLASS(cpu);
-
-    if (klass->reset != NULL) {
-        (*klass->reset)(cpu);
-    }
+    device_cold_reset(DEVICE(cpu));
 
     trace_guest_cpu_reset(cpu);
 }
 
-static void cpu_common_reset(CPUState *cpu)
+static void cpu_common_reset(DeviceState *dev)
 {
+    CPUState *cpu = CPU(dev);
     CPUClass *cc = CPU_GET_CLASS(cpu);
 
     if (qemu_loglevel_mask(CPU_LOG_RESET)) {
@@ -419,7 +408,6 @@ static void cpu_class_init(ObjectClass *klass, void *data)
     CPUClass *k = CPU_CLASS(klass);
 
     k->parse_features = cpu_common_parse_features;
-    k->reset = cpu_common_reset;
     k->get_arch_id = cpu_common_get_arch_id;
     k->has_work = cpu_common_has_work;
     k->get_paging_enabled = cpu_common_get_paging_enabled;
@@ -440,6 +428,7 @@ static void cpu_class_init(ObjectClass *klass, void *data)
     set_bit(DEVICE_CATEGORY_CPU, dc->categories);
     dc->realize = cpu_common_realizefn;
     dc->unrealize = cpu_common_unrealizefn;
+    dc->reset = cpu_common_reset;
     device_class_set_props(dc, cpu_common_props);
     /*
      * Reason: CPUs still need special care by board code: wiring up
diff --git a/hw/core/machine.c b/hw/core/machine.c
index 9e8c06036f..b958cd1b99 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -425,6 +425,14 @@ static void machine_set_memory_encryption(Object *obj, const char *value,
 
     g_free(ms->memory_encryption);
     ms->memory_encryption = g_strdup(value);
+
+    /*
+     * With memory encryption, the host can't see the real contents of RAM,
+     * so there's no point in it trying to merge areas.
+     */
+    if (value) {
+        machine_set_mem_merge(obj, false, errp);
+    }
 }
 
 static bool machine_get_nvdimm(Object *obj, Error **errp)
@@ -749,6 +757,7 @@ static void smp_parse(MachineState *ms, QemuOpts *opts)
         ms->smp.cpus = cpus;
         ms->smp.cores = cores;
         ms->smp.threads = threads;
+        ms->smp.sockets = sockets;
     }
 
     if (ms->smp.cpus > 1) {
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 362eb2a180..98ee763f68 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -781,6 +781,7 @@ void pc_smp_parse(MachineState *ms, QemuOpts *opts)
         ms->smp.cpus = cpus;
         ms->smp.cores = cores;
         ms->smp.threads = threads;
+        ms->smp.sockets = sockets;
         x86ms->smp_dies = dies;
     }
 
@@ -1505,7 +1506,7 @@ static void pc_cpu_pre_plug(HotplugHandler *hotplug_dev,
     int idx;
     CPUState *cs;
     CPUArchId *cpu_slot;
-    X86CPUTopoInfo topo;
+    X86CPUTopoIDs topo_ids;
     X86CPU *cpu = X86_CPU(dev);
     CPUX86State *env = &cpu->env;
     MachineState *ms = MACHINE(hotplug_dev);
@@ -1513,6 +1514,7 @@ static void pc_cpu_pre_plug(HotplugHandler *hotplug_dev,
     X86MachineState *x86ms = X86_MACHINE(pcms);
     unsigned int smp_cores = ms->smp.cores;
     unsigned int smp_threads = ms->smp.threads;
+    X86CPUTopoInfo topo_info;
 
     if(!object_dynamic_cast(OBJECT(cpu), ms->cpu_type)) {
         error_setg(errp, "Invalid CPU type, expected cpu type: '%s'",
@@ -1520,7 +1522,10 @@ static void pc_cpu_pre_plug(HotplugHandler *hotplug_dev,
         return;
     }
 
+    init_topo_info(&topo_info, x86ms);
+
     env->nr_dies = x86ms->smp_dies;
+    env->nr_nodes = topo_info.nodes_per_pkg;
 
     /*
      * If APIC ID is not set,
@@ -1571,24 +1576,22 @@ static void pc_cpu_pre_plug(HotplugHandler *hotplug_dev,
             return;
         }
 
-        topo.pkg_id = cpu->socket_id;
-        topo.die_id = cpu->die_id;
-        topo.core_id = cpu->core_id;
-        topo.smt_id = cpu->thread_id;
-        cpu->apic_id = apicid_from_topo_ids(x86ms->smp_dies, smp_cores,
-                                            smp_threads, &topo);
+        topo_ids.pkg_id = cpu->socket_id;
+        topo_ids.die_id = cpu->die_id;
+        topo_ids.core_id = cpu->core_id;
+        topo_ids.smt_id = cpu->thread_id;
+        cpu->apic_id = x86_apicid_from_topo_ids(&topo_info, &topo_ids);
     }
 
     cpu_slot = pc_find_cpu_slot(MACHINE(pcms), cpu->apic_id, &idx);
     if (!cpu_slot) {
         MachineState *ms = MACHINE(pcms);
 
-        x86_topo_ids_from_apicid(cpu->apic_id, x86ms->smp_dies,
-                                 smp_cores, smp_threads, &topo);
+        x86_topo_ids_from_apicid(cpu->apic_id, &topo_info, &topo_ids);
         error_setg(errp,
             "Invalid CPU [socket: %u, die: %u, core: %u, thread: %u] with"
             " APIC ID %" PRIu32 ", valid index range 0:%d",
-            topo.pkg_id, topo.die_id, topo.core_id, topo.smt_id,
+            topo_ids.pkg_id, topo_ids.die_id, topo_ids.core_id, topo_ids.smt_id,
             cpu->apic_id, ms->possible_cpus->len - 1);
         return;
     }
@@ -1605,35 +1608,37 @@ static void pc_cpu_pre_plug(HotplugHandler *hotplug_dev,
     /* TODO: move socket_id/core_id/thread_id checks into x86_cpu_realizefn()
      * once -smp refactoring is complete and there will be CPU private
      * CPUState::nr_cores and CPUState::nr_threads fields instead of globals */
-    x86_topo_ids_from_apicid(cpu->apic_id, x86ms->smp_dies,
-                             smp_cores, smp_threads, &topo);
-    if (cpu->socket_id != -1 && cpu->socket_id != topo.pkg_id) {
+    x86_topo_ids_from_apicid(cpu->apic_id, &topo_info, &topo_ids);
+    if (cpu->socket_id != -1 && cpu->socket_id != topo_ids.pkg_id) {
         error_setg(errp, "property socket-id: %u doesn't match set apic-id:"
-            " 0x%x (socket-id: %u)", cpu->socket_id, cpu->apic_id, topo.pkg_id);
+            " 0x%x (socket-id: %u)", cpu->socket_id, cpu->apic_id,
+            topo_ids.pkg_id);
         return;
     }
-    cpu->socket_id = topo.pkg_id;
+    cpu->socket_id = topo_ids.pkg_id;
 
-    if (cpu->die_id != -1 && cpu->die_id != topo.die_id) {
+    if (cpu->die_id != -1 && cpu->die_id != topo_ids.die_id) {
         error_setg(errp, "property die-id: %u doesn't match set apic-id:"
-            " 0x%x (die-id: %u)", cpu->die_id, cpu->apic_id, topo.die_id);
+            " 0x%x (die-id: %u)", cpu->die_id, cpu->apic_id, topo_ids.die_id);
         return;
     }
-    cpu->die_id = topo.die_id;
+    cpu->die_id = topo_ids.die_id;
 
-    if (cpu->core_id != -1 && cpu->core_id != topo.core_id) {
+    if (cpu->core_id != -1 && cpu->core_id != topo_ids.core_id) {
         error_setg(errp, "property core-id: %u doesn't match set apic-id:"
-            " 0x%x (core-id: %u)", cpu->core_id, cpu->apic_id, topo.core_id);
+            " 0x%x (core-id: %u)", cpu->core_id, cpu->apic_id,
+            topo_ids.core_id);
         return;
     }
-    cpu->core_id = topo.core_id;
+    cpu->core_id = topo_ids.core_id;
 
-    if (cpu->thread_id != -1 && cpu->thread_id != topo.smt_id) {
+    if (cpu->thread_id != -1 && cpu->thread_id != topo_ids.smt_id) {
         error_setg(errp, "property thread-id: %u doesn't match set apic-id:"
-            " 0x%x (thread-id: %u)", cpu->thread_id, cpu->apic_id, topo.smt_id);
+            " 0x%x (thread-id: %u)", cpu->thread_id, cpu->apic_id,
+            topo_ids.smt_id);
         return;
     }
-    cpu->thread_id = topo.smt_id;
+    cpu->thread_id = topo_ids.smt_id;
 
     if (hyperv_feat_enabled(cpu, HYPERV_FEAT_VPINDEX) &&
         !kvm_hv_vpindex_settable()) {
diff --git a/hw/i386/x86.c b/hw/i386/x86.c
index 08246523f2..87b73fe33c 100644
--- a/hw/i386/x86.c
+++ b/hw/i386/x86.c
@@ -57,6 +57,17 @@
 /* Physical Address of PVH entry point read from kernel ELF NOTE */
 static size_t pvh_start_addr;
 
+inline void init_topo_info(X86CPUTopoInfo *topo_info,
+                           const X86MachineState *x86ms)
+{
+    MachineState *ms = MACHINE(x86ms);
+
+    topo_info->nodes_per_pkg = ms->numa_state->num_nodes / ms->smp.sockets;
+    topo_info->dies_per_pkg = x86ms->smp_dies;
+    topo_info->cores_per_die = ms->smp.cores;
+    topo_info->threads_per_core = ms->smp.threads;
+}
+
 /*
  * Calculates initial APIC ID for a specific CPU index
  *
@@ -68,13 +79,14 @@ static size_t pvh_start_addr;
 uint32_t x86_cpu_apic_id_from_index(X86MachineState *x86ms,
                                     unsigned int cpu_index)
 {
-    MachineState *ms = MACHINE(x86ms);
     X86MachineClass *x86mc = X86_MACHINE_GET_CLASS(x86ms);
+    X86CPUTopoInfo topo_info;
     uint32_t correct_id;
     static bool warned;
 
-    correct_id = x86_apicid_from_cpu_idx(x86ms->smp_dies, ms->smp.cores,
-                                         ms->smp.threads, cpu_index);
+    init_topo_info(&topo_info, x86ms);
+
+    correct_id = x86_apicid_from_cpu_idx(&topo_info, cpu_index);
     if (x86mc->compat_apic_id_mode) {
         if (cpu_index != correct_id && !warned && !qtest_enabled()) {
             error_report("APIC IDs set in compatibility mode, "
@@ -92,13 +104,9 @@ void x86_cpu_new(X86MachineState *x86ms, int64_t apic_id, Error **errp)
 {
     Object *cpu = NULL;
     Error *local_err = NULL;
-    CPUX86State *env = NULL;
 
     cpu = object_new(MACHINE(x86ms)->cpu_type);
 
-    env = &X86_CPU(cpu)->env;
-    env->nr_dies = x86ms->smp_dies;
-
     object_property_set_uint(cpu, apic_id, "apic-id", &local_err);
     object_property_set_bool(cpu, true, "realized", &local_err);
 
@@ -143,21 +151,24 @@ x86_cpu_index_to_props(MachineState *ms, unsigned cpu_index)
 
 int64_t x86_get_default_cpu_node_id(const MachineState *ms, int idx)
 {
-   X86CPUTopoInfo topo;
+   X86CPUTopoIDs topo_ids;
    X86MachineState *x86ms = X86_MACHINE(ms);
+   X86CPUTopoInfo topo_info;
+
+   init_topo_info(&topo_info, x86ms);
 
    assert(idx < ms->possible_cpus->len);
    x86_topo_ids_from_apicid(ms->possible_cpus->cpus[idx].arch_id,
-                            x86ms->smp_dies, ms->smp.cores,
-                            ms->smp.threads, &topo);
-   return topo.pkg_id % ms->numa_state->num_nodes;
+                            &topo_info, &topo_ids);
+   return topo_ids.pkg_id % ms->numa_state->num_nodes;
 }
 
 const CPUArchIdList *x86_possible_cpu_arch_ids(MachineState *ms)
 {
     X86MachineState *x86ms = X86_MACHINE(ms);
-    int i;
     unsigned int max_cpus = ms->smp.max_cpus;
+    X86CPUTopoInfo topo_info;
+    int i;
 
     if (ms->possible_cpus) {
         /*
@@ -171,26 +182,28 @@ const CPUArchIdList *x86_possible_cpu_arch_ids(MachineState *ms)
     ms->possible_cpus = g_malloc0(sizeof(CPUArchIdList) +
                                   sizeof(CPUArchId) * max_cpus);
     ms->possible_cpus->len = max_cpus;
+
+    init_topo_info(&topo_info, x86ms);
+
     for (i = 0; i < ms->possible_cpus->len; i++) {
-        X86CPUTopoInfo topo;
+        X86CPUTopoIDs topo_ids;
 
         ms->possible_cpus->cpus[i].type = ms->cpu_type;
         ms->possible_cpus->cpus[i].vcpus_count = 1;
         ms->possible_cpus->cpus[i].arch_id =
             x86_cpu_apic_id_from_index(x86ms, i);
         x86_topo_ids_from_apicid(ms->possible_cpus->cpus[i].arch_id,
-                                 x86ms->smp_dies, ms->smp.cores,
-                                 ms->smp.threads, &topo);
+                                 &topo_info, &topo_ids);
         ms->possible_cpus->cpus[i].props.has_socket_id = true;
-        ms->possible_cpus->cpus[i].props.socket_id = topo.pkg_id;
+        ms->possible_cpus->cpus[i].props.socket_id = topo_ids.pkg_id;
         if (x86ms->smp_dies > 1) {
             ms->possible_cpus->cpus[i].props.has_die_id = true;
-            ms->possible_cpus->cpus[i].props.die_id = topo.die_id;
+            ms->possible_cpus->cpus[i].props.die_id = topo_ids.die_id;
         }
         ms->possible_cpus->cpus[i].props.has_core_id = true;
-        ms->possible_cpus->cpus[i].props.core_id = topo.core_id;
+        ms->possible_cpus->cpus[i].props.core_id = topo_ids.core_id;
         ms->possible_cpus->cpus[i].props.has_thread_id = true;
-        ms->possible_cpus->cpus[i].props.thread_id = topo.smt_id;
+        ms->possible_cpus->cpus[i].props.thread_id = topo_ids.smt_id;
     }
     return ms->possible_cpus;
 }
diff --git a/include/hw/boards.h b/include/hw/boards.h
index c96120d15f..236d239c19 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -236,12 +236,14 @@ typedef struct DeviceMemoryState {
  * @cpus: the number of present logical processors on the machine
  * @cores: the number of cores in one package
  * @threads: the number of threads in one core
+ * @sockets: the number of sockets on the machine
  * @max_cpus: the maximum number of logical processors on the machine
  */
 typedef struct CpuTopology {
     unsigned int cpus;
     unsigned int cores;
     unsigned int threads;
+    unsigned int sockets;
     unsigned int max_cpus;
 } CpuTopology;
 
diff --git a/include/hw/core/cpu.h b/include/hw/core/cpu.h
index e1d6ee00b4..5bf94d28cf 100644
--- a/include/hw/core/cpu.h
+++ b/include/hw/core/cpu.h
@@ -79,7 +79,6 @@ struct TranslationBlock;
  * @class_by_name: Callback to map -cpu command line model name to an
  * instantiatable CPU type.
  * @parse_features: Callback to parse command line arguments.
- * @reset: Callback to reset the #CPUState to its initial state.
  * @reset_dump_flags: #CPUDumpFlags to use for reset logging.
  * @has_work: Callback for checking if there is work to do.
  * @do_interrupt: Callback for interrupt handling.
@@ -165,7 +164,6 @@ typedef struct CPUClass {
     ObjectClass *(*class_by_name)(const char *cpu_model);
     void (*parse_features)(const char *typename, char *str, Error **errp);
 
-    void (*reset)(CPUState *cpu);
     int reset_dump_flags;
     bool (*has_work)(CPUState *cpu);
     void (*do_interrupt)(CPUState *cpu);
@@ -1135,10 +1133,6 @@ void cpu_exec_unrealizefn(CPUState *cpu);
  */
 bool target_words_bigendian(void);
 
-void cpu_class_set_parent_reset(CPUClass *cc,
-                                void (*child_reset)(CPUState *cpu),
-                                void (**parent_reset)(CPUState *cpu));
-
 #ifdef NEED_CPU_H
 
 #ifdef CONFIG_SOFTMMU
diff --git a/include/hw/i386/topology.h b/include/hw/i386/topology.h
index 4ff5b2da6c..b9593b9905 100644
--- a/include/hw/i386/topology.h
+++ b/include/hw/i386/topology.h
@@ -45,11 +45,18 @@
  */
 typedef uint32_t apic_id_t;
 
-typedef struct X86CPUTopoInfo {
+typedef struct X86CPUTopoIDs {
     unsigned pkg_id;
     unsigned die_id;
     unsigned core_id;
     unsigned smt_id;
+} X86CPUTopoIDs;
+
+typedef struct X86CPUTopoInfo {
+    unsigned nodes_per_pkg;
+    unsigned dies_per_pkg;
+    unsigned cores_per_die;
+    unsigned threads_per_core;
 } X86CPUTopoInfo;
 
 /* Return the bit width needed for 'count' IDs
@@ -63,120 +70,102 @@ static unsigned apicid_bitwidth_for_count(unsigned count)
 
 /* Bit width of the SMT_ID (thread ID) field on the APIC ID
  */
-static inline unsigned apicid_smt_width(unsigned nr_dies,
-                                        unsigned nr_cores,
-                                        unsigned nr_threads)
+static inline unsigned apicid_smt_width(X86CPUTopoInfo *topo_info)
 {
-    return apicid_bitwidth_for_count(nr_threads);
+    return apicid_bitwidth_for_count(topo_info->threads_per_core);
 }
 
 /* Bit width of the Core_ID field
  */
-static inline unsigned apicid_core_width(unsigned nr_dies,
-                                         unsigned nr_cores,
-                                         unsigned nr_threads)
+static inline unsigned apicid_core_width(X86CPUTopoInfo *topo_info)
 {
-    return apicid_bitwidth_for_count(nr_cores);
+    return apicid_bitwidth_for_count(topo_info->cores_per_die);
 }
 
 /* Bit width of the Die_ID field */
-static inline unsigned apicid_die_width(unsigned nr_dies,
-                                        unsigned nr_cores,
-                                        unsigned nr_threads)
+static inline unsigned apicid_die_width(X86CPUTopoInfo *topo_info)
 {
-    return apicid_bitwidth_for_count(nr_dies);
+    return apicid_bitwidth_for_count(topo_info->dies_per_pkg);
 }
 
 /* Bit offset of the Core_ID field
  */
-static inline unsigned apicid_core_offset(unsigned nr_dies,
-                                          unsigned nr_cores,
-                                          unsigned nr_threads)
+static inline unsigned apicid_core_offset(X86CPUTopoInfo *topo_info)
 {
-    return apicid_smt_width(nr_dies, nr_cores, nr_threads);
+    return apicid_smt_width(topo_info);
 }
 
 /* Bit offset of the Die_ID field */
-static inline unsigned apicid_die_offset(unsigned nr_dies,
-                                          unsigned nr_cores,
-                                           unsigned nr_threads)
+static inline unsigned apicid_die_offset(X86CPUTopoInfo *topo_info)
 {
-    return apicid_core_offset(nr_dies, nr_cores, nr_threads) +
-           apicid_core_width(nr_dies, nr_cores, nr_threads);
+    return apicid_core_offset(topo_info) + apicid_core_width(topo_info);
 }
 
 /* Bit offset of the Pkg_ID (socket ID) field
  */
-static inline unsigned apicid_pkg_offset(unsigned nr_dies,
-                                         unsigned nr_cores,
-                                         unsigned nr_threads)
+static inline unsigned apicid_pkg_offset(X86CPUTopoInfo *topo_info)
 {
-    return apicid_die_offset(nr_dies, nr_cores, nr_threads) +
-           apicid_die_width(nr_dies, nr_cores, nr_threads);
+    return apicid_die_offset(topo_info) + apicid_die_width(topo_info);
 }
 
 /* Make APIC ID for the CPU based on Pkg_ID, Core_ID, SMT_ID
  *
  * The caller must make sure core_id < nr_cores and smt_id < nr_threads.
  */
-static inline apic_id_t apicid_from_topo_ids(unsigned nr_dies,
-                                             unsigned nr_cores,
-                                             unsigned nr_threads,
-                                             const X86CPUTopoInfo *topo)
+static inline apic_id_t x86_apicid_from_topo_ids(X86CPUTopoInfo *topo_info,
+                                                 const X86CPUTopoIDs *topo_ids)
 {
-    return (topo->pkg_id  << apicid_pkg_offset(nr_dies, nr_cores, nr_threads)) |
-           (topo->die_id  << apicid_die_offset(nr_dies, nr_cores, nr_threads)) |
-          (topo->core_id << apicid_core_offset(nr_dies, nr_cores, nr_threads)) |
-           topo->smt_id;
+    return (topo_ids->pkg_id  << apicid_pkg_offset(topo_info)) |
+           (topo_ids->die_id  << apicid_die_offset(topo_info)) |
+           (topo_ids->core_id << apicid_core_offset(topo_info)) |
+           topo_ids->smt_id;
 }
 
 /* Calculate thread/core/package IDs for a specific topology,
  * based on (contiguous) CPU index
  */
-static inline void x86_topo_ids_from_idx(unsigned nr_dies,
-                                         unsigned nr_cores,
-                                         unsigned nr_threads,
+static inline void x86_topo_ids_from_idx(X86CPUTopoInfo *topo_info,
                                          unsigned cpu_index,
-                                         X86CPUTopoInfo *topo)
+                                         X86CPUTopoIDs *topo_ids)
 {
-    topo->pkg_id = cpu_index / (nr_dies * nr_cores * nr_threads);
-    topo->die_id = cpu_index / (nr_cores * nr_threads) % nr_dies;
-    topo->core_id = cpu_index / nr_threads % nr_cores;
-    topo->smt_id = cpu_index % nr_threads;
+    unsigned nr_dies = topo_info->dies_per_pkg;
+    unsigned nr_cores = topo_info->cores_per_die;
+    unsigned nr_threads = topo_info->threads_per_core;
+
+    topo_ids->pkg_id = cpu_index / (nr_dies * nr_cores * nr_threads);
+    topo_ids->die_id = cpu_index / (nr_cores * nr_threads) % nr_dies;
+    topo_ids->core_id = cpu_index / nr_threads % nr_cores;
+    topo_ids->smt_id = cpu_index % nr_threads;
 }
 
 /* Calculate thread/core/package IDs for a specific topology,
  * based on APIC ID
  */
 static inline void x86_topo_ids_from_apicid(apic_id_t apicid,
-                                            unsigned nr_dies,
-                                            unsigned nr_cores,
-                                            unsigned nr_threads,
-                                            X86CPUTopoInfo *topo)
+                                            X86CPUTopoInfo *topo_info,
+                                            X86CPUTopoIDs *topo_ids)
 {
-    topo->smt_id = apicid &
-            ~(0xFFFFFFFFUL << apicid_smt_width(nr_dies, nr_cores, nr_threads));
-    topo->core_id =
-            (apicid >> apicid_core_offset(nr_dies, nr_cores, nr_threads)) &
-            ~(0xFFFFFFFFUL << apicid_core_width(nr_dies, nr_cores, nr_threads));
-    topo->die_id =
-            (apicid >> apicid_die_offset(nr_dies, nr_cores, nr_threads)) &
-            ~(0xFFFFFFFFUL << apicid_die_width(nr_dies, nr_cores, nr_threads));
-    topo->pkg_id = apicid >> apicid_pkg_offset(nr_dies, nr_cores, nr_threads);
+    topo_ids->smt_id = apicid &
+            ~(0xFFFFFFFFUL << apicid_smt_width(topo_info));
+    topo_ids->core_id =
+            (apicid >> apicid_core_offset(topo_info)) &
+            ~(0xFFFFFFFFUL << apicid_core_width(topo_info));
+    topo_ids->die_id =
+            (apicid >> apicid_die_offset(topo_info)) &
+            ~(0xFFFFFFFFUL << apicid_die_width(topo_info));
+    topo_ids->pkg_id = apicid >> apicid_pkg_offset(topo_info);
 }
 
 /* Make APIC ID for the CPU 'cpu_index'
  *
  * 'cpu_index' is a sequential, contiguous ID for the CPU.
  */
-static inline apic_id_t x86_apicid_from_cpu_idx(unsigned nr_dies,
-                                                unsigned nr_cores,
-                                                unsigned nr_threads,
+static inline apic_id_t x86_apicid_from_cpu_idx(X86CPUTopoInfo *topo_info,
                                                 unsigned cpu_index)
 {
-    X86CPUTopoInfo topo;
-    x86_topo_ids_from_idx(nr_dies, nr_cores, nr_threads, cpu_index, &topo);
-    return apicid_from_topo_ids(nr_dies, nr_cores, nr_threads, &topo);
+    X86CPUTopoIDs topo_ids;
+    x86_topo_ids_from_idx(topo_info, cpu_index, &topo_ids);
+    return x86_apicid_from_topo_ids(topo_info, &topo_ids);
 }
 
 #endif /* HW_I386_TOPOLOGY_H */
diff --git a/include/hw/i386/x86.h b/include/hw/i386/x86.h
index 41fe37b8a3..22babcb3bb 100644
--- a/include/hw/i386/x86.h
+++ b/include/hw/i386/x86.h
@@ -21,6 +21,7 @@
 #include "exec/hwaddr.h"
 #include "qemu/notify.h"
 
+#include "hw/i386/topology.h"
 #include "hw/boards.h"
 #include "hw/nmi.h"
 #include "hw/isa/isa.h"
@@ -82,6 +83,8 @@ typedef struct {
 #define X86_MACHINE_CLASS(class) \
     OBJECT_CLASS_CHECK(X86MachineClass, class, TYPE_X86_MACHINE)
 
+void init_topo_info(X86CPUTopoInfo *topo_info, const X86MachineState *x86ms);
+
 uint32_t x86_cpu_apic_id_from_index(X86MachineState *pcms,
                                     unsigned int cpu_index);
 
diff --git a/scripts/coccinelle/cpu-reset.cocci b/scripts/coccinelle/cpu-reset.cocci
new file mode 100644
index 0000000000..396a724e51
--- /dev/null
+++ b/scripts/coccinelle/cpu-reset.cocci
@@ -0,0 +1,47 @@
+// Convert targets using the old CPUState reset to DeviceState reset
+//
+// Copyright Linaro Ltd 2020
+// This work is licensed under the terms of the GNU GPLv2 or later.
+//
+// spatch --macro-file scripts/cocci-macro-file.h \
+//        --sp-file scripts/coccinelle/cpu-reset.cocci \
+//        --keep-comments --smpl-spacing --in-place --include-headers --dir target
+//
+// For simplicity we assume some things about the code we're modifying
+// that happen to be true for all our targets:
+//  * all cpu_class_set_parent_reset() callsites have a 'DeviceClass *dc' local
+//  * the parent reset field in the target CPU class is 'parent_reset'
+//  * no reset function already has a 'dev' local
+
+@@
+identifier cpu, x;
+typedef CPUState;
+@@
+struct x {
+...
+- void (*parent_reset)(CPUState *cpu);
++ DeviceReset parent_reset;
+...
+};
+@ rule1 @
+identifier resetfn;
+expression resetfield;
+identifier cc;
+@@
+- cpu_class_set_parent_reset(cc, resetfn, resetfield)
++ device_class_set_parent_reset(dc, resetfn, resetfield)
+@@
+identifier rule1.resetfn;
+identifier cpu, cc;
+typedef CPUState, DeviceState;
+@@
+-resetfn(CPUState *cpu)
+-{
++resetfn(DeviceState *dev)
++{
++    CPUState *cpu = CPU(dev);
+<...
+-    cc->parent_reset(cpu);
++    cc->parent_reset(dev);
+...>
+}
diff --git a/softmmu/vl.c b/softmmu/vl.c
index 6a285925b3..1d33a28340 100644
--- a/softmmu/vl.c
+++ b/softmmu/vl.c
@@ -3946,6 +3946,7 @@ void qemu_init(int argc, char **argv, char **envp)
     current_machine->smp.max_cpus = machine_class->default_cpus;
     current_machine->smp.cores = 1;
     current_machine->smp.threads = 1;
+    current_machine->smp.sockets = 1;
 
     machine_class->smp_parse(current_machine,
         qemu_opts_find(qemu_find_opts("smp-opts"), NULL));
diff --git a/target/alpha/cpu-qom.h b/target/alpha/cpu-qom.h
index 6f0a0adb9e..08832fa767 100644
--- a/target/alpha/cpu-qom.h
+++ b/target/alpha/cpu-qom.h
@@ -44,7 +44,7 @@ typedef struct AlphaCPUClass {
     /*< public >*/
 
     DeviceRealize parent_realize;
-    void (*parent_reset)(CPUState *cpu);
+    DeviceReset parent_reset;
 } AlphaCPUClass;
 
 typedef struct AlphaCPU AlphaCPU;
diff --git a/target/arm/cpu-qom.h b/target/arm/cpu-qom.h
index 3a9d31ea9d..d95568bf05 100644
--- a/target/arm/cpu-qom.h
+++ b/target/arm/cpu-qom.h
@@ -51,7 +51,7 @@ typedef struct ARMCPUClass {
 
     const ARMCPUInfo *info;
     DeviceRealize parent_realize;
-    void (*parent_reset)(CPUState *cpu);
+    DeviceReset parent_reset;
 } ARMCPUClass;
 
 typedef struct ARMCPU ARMCPU;
diff --git a/target/arm/cpu.c b/target/arm/cpu.c
index 3a5d1379cf..a79f233b17 100644
--- a/target/arm/cpu.c
+++ b/target/arm/cpu.c
@@ -155,14 +155,14 @@ static void cp_reg_check_reset(gpointer key, gpointer value,  gpointer opaque)
     assert(oldvalue == newvalue);
 }
 
-/* CPUClass::reset() */
-static void arm_cpu_reset(CPUState *s)
+static void arm_cpu_reset(DeviceState *dev)
 {
+    CPUState *s = CPU(dev);
     ARMCPU *cpu = ARM_CPU(s);
     ARMCPUClass *acc = ARM_CPU_GET_CLASS(cpu);
     CPUARMState *env = &cpu->env;
 
-    acc->parent_reset(s);
+    acc->parent_reset(dev);
 
     memset(env, 0, offsetof(CPUARMState, end_reset_fields));
 
@@ -2786,7 +2786,7 @@ static void arm_cpu_class_init(ObjectClass *oc, void *data)
                                     &acc->parent_realize);
 
     device_class_set_props(dc, arm_cpu_properties);
-    cpu_class_set_parent_reset(cc, arm_cpu_reset, &acc->parent_reset);
+    device_class_set_parent_reset(dc, arm_cpu_reset, &acc->parent_reset);
 
     cc->class_by_name = arm_cpu_class_by_name;
     cc->has_work = arm_cpu_has_work;
diff --git a/target/cris/cpu-qom.h b/target/cris/cpu-qom.h
index 308c1f95bd..f1de6041dc 100644
--- a/target/cris/cpu-qom.h
+++ b/target/cris/cpu-qom.h
@@ -45,7 +45,7 @@ typedef struct CRISCPUClass {
     /*< public >*/
 
     DeviceRealize parent_realize;
-    void (*parent_reset)(CPUState *cpu);
+    DeviceReset parent_reset;
 
     uint32_t vr;
 } CRISCPUClass;
diff --git a/target/cris/cpu.c b/target/cris/cpu.c
index 17c6712e29..cff6b9eabf 100644
--- a/target/cris/cpu.c
+++ b/target/cris/cpu.c
@@ -40,15 +40,15 @@ static bool cris_cpu_has_work(CPUState *cs)
     return cs->interrupt_request & (CPU_INTERRUPT_HARD | CPU_INTERRUPT_NMI);
 }
 
-/* CPUClass::reset() */
-static void cris_cpu_reset(CPUState *s)
+static void cris_cpu_reset(DeviceState *dev)
 {
+    CPUState *s = CPU(dev);
     CRISCPU *cpu = CRIS_CPU(s);
     CRISCPUClass *ccc = CRIS_CPU_GET_CLASS(cpu);
     CPUCRISState *env = &cpu->env;
     uint32_t vr;
 
-    ccc->parent_reset(s);
+    ccc->parent_reset(dev);
 
     vr = env->pregs[PR_VR];
     memset(env, 0, offsetof(CPUCRISState, end_reset_fields));
@@ -264,7 +264,7 @@ static void cris_cpu_class_init(ObjectClass *oc, void *data)
     device_class_set_parent_realize(dc, cris_cpu_realizefn,
                                     &ccc->parent_realize);
 
-    cpu_class_set_parent_reset(cc, cris_cpu_reset, &ccc->parent_reset);
+    device_class_set_parent_reset(dc, cris_cpu_reset, &ccc->parent_reset);
 
     cc->class_by_name = cris_cpu_class_by_name;
     cc->has_work = cris_cpu_has_work;
diff --git a/target/hppa/cpu-qom.h b/target/hppa/cpu-qom.h
index 6367dc4793..b1f6045495 100644
--- a/target/hppa/cpu-qom.h
+++ b/target/hppa/cpu-qom.h
@@ -44,7 +44,7 @@ typedef struct HPPACPUClass {
     /*< public >*/
 
     DeviceRealize parent_realize;
-    void (*parent_reset)(CPUState *cpu);
+    DeviceReset parent_reset;
 } HPPACPUClass;
 
 typedef struct HPPACPU HPPACPU;
diff --git a/target/i386/cpu-qom.h b/target/i386/cpu-qom.h
index 0efab2fc67..3e96f8d668 100644
--- a/target/i386/cpu-qom.h
+++ b/target/i386/cpu-qom.h
@@ -71,7 +71,7 @@ typedef struct X86CPUClass {
 
     DeviceRealize parent_realize;
     DeviceUnrealize parent_unrealize;
-    void (*parent_reset)(CPUState *cpu);
+    DeviceReset parent_reset;
 } X86CPUClass;
 
 typedef struct X86CPU X86CPU;
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 92fafa2659..34b511f078 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -1133,7 +1133,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
             "clzero", NULL, "xsaveerptr", NULL,
             NULL, NULL, NULL, NULL,
             NULL, "wbnoinvd", NULL, NULL,
-            "ibpb", NULL, NULL, NULL,
+            "ibpb", NULL, NULL, "amd-stibp",
             NULL, NULL, NULL, NULL,
             NULL, NULL, NULL, NULL,
             "amd-ssbd", "virt-ssbd", "amd-no-ssb", NULL,
@@ -1690,6 +1690,7 @@ typedef struct PropValue {
 typedef struct X86CPUVersionDefinition {
     X86CPUVersion version;
     const char *alias;
+    const char *note;
     PropValue *props;
 } X86CPUVersionDefinition;
 
@@ -1720,6 +1721,7 @@ struct X86CPUModel {
     X86CPUDefinition *cpudef;
     /* CPU model version */
     X86CPUVersion version;
+    const char *note;
     /*
      * If true, this is an alias CPU model.
      * This matters only for "-cpu help" and query-cpu-definitions
@@ -1796,6 +1798,56 @@ static CPUCaches epyc_cache_info = {
     },
 };
 
+static CPUCaches epyc_rome_cache_info = {
+    .l1d_cache = &(CPUCacheInfo) {
+        .type = DATA_CACHE,
+        .level = 1,
+        .size = 32 * KiB,
+        .line_size = 64,
+        .associativity = 8,
+        .partitions = 1,
+        .sets = 64,
+        .lines_per_tag = 1,
+        .self_init = 1,
+        .no_invd_sharing = true,
+    },
+    .l1i_cache = &(CPUCacheInfo) {
+        .type = INSTRUCTION_CACHE,
+        .level = 1,
+        .size = 32 * KiB,
+        .line_size = 64,
+        .associativity = 8,
+        .partitions = 1,
+        .sets = 64,
+        .lines_per_tag = 1,
+        .self_init = 1,
+        .no_invd_sharing = true,
+    },
+    .l2_cache = &(CPUCacheInfo) {
+        .type = UNIFIED_CACHE,
+        .level = 2,
+        .size = 512 * KiB,
+        .line_size = 64,
+        .associativity = 8,
+        .partitions = 1,
+        .sets = 1024,
+        .lines_per_tag = 1,
+    },
+    .l3_cache = &(CPUCacheInfo) {
+        .type = UNIFIED_CACHE,
+        .level = 3,
+        .size = 16 * MiB,
+        .line_size = 64,
+        .associativity = 16,
+        .partitions = 1,
+        .sets = 16384,
+        .lines_per_tag = 1,
+        .self_init = true,
+        .inclusive = true,
+        .complex_indexing = true,
+    },
+};
+
 /* The following VMX features are not supported by KVM and are left out in the
  * CPU definitions:
  *
@@ -3592,6 +3644,18 @@ static X86CPUDefinition builtin_x86_defs[] = {
         .features[FEAT_VMX_VMFUNC] = MSR_VMX_VMFUNC_EPT_SWITCHING,
         .xlevel = 0x80000008,
         .model_id = "Intel Atom Processor (Denverton)",
+        .versions = (X86CPUVersionDefinition[]) {
+            { .version = 1 },
+            {
+                .version = 2,
+                .props = (PropValue[]) {
+                    { "monitor", "off" },
+                    { "mpx", "off" },
+                    { /* end of list */ },
+                },
+            },
+            { /* end of list */ },
+        },
     },
     {
         .name = "Snowridge",
@@ -3928,10 +3992,6 @@ static X86CPUDefinition builtin_x86_defs[] = {
             CPUID_7_0_EBX_SMEP | CPUID_7_0_EBX_BMI2 | CPUID_7_0_EBX_RDSEED |
             CPUID_7_0_EBX_ADX | CPUID_7_0_EBX_SMAP | CPUID_7_0_EBX_CLFLUSHOPT |
             CPUID_7_0_EBX_SHA_NI,
-        /* Missing: XSAVES (not supported by some Linux versions,
-         * including v4.1 to v4.12).
-         * KVM doesn't yet expose any XSAVES state save component.
-         */
         .features[FEAT_XSAVE] =
             CPUID_XSAVE_XSAVEOPT | CPUID_XSAVE_XSAVEC |
             CPUID_XSAVE_XGETBV1,
@@ -3954,6 +4014,19 @@ static X86CPUDefinition builtin_x86_defs[] = {
                     { /* end of list */ }
                 }
             },
+            {
+                .version = 3,
+                .props = (PropValue[]) {
+                    { "ibpb", "on" },
+                    { "perfctr-core", "on" },
+                    { "clzero", "on" },
+                    { "xsaveerptr", "on" },
+                    { "xsaves", "on" },
+                    { "model-id",
+                      "AMD EPYC Processor" },
+                    { /* end of list */ }
+                }
+            },
             { /* end of list */ }
         }
     },
@@ -4007,6 +4080,56 @@ static X86CPUDefinition builtin_x86_defs[] = {
         .model_id = "Hygon Dhyana Processor",
         .cache_info = &epyc_cache_info,
     },
+    {
+        .name = "EPYC-Rome",
+        .level = 0xd,
+        .vendor = CPUID_VENDOR_AMD,
+        .family = 23,
+        .model = 49,
+        .stepping = 0,
+        .features[FEAT_1_EDX] =
+            CPUID_SSE2 | CPUID_SSE | CPUID_FXSR | CPUID_MMX | CPUID_CLFLUSH |
+            CPUID_PSE36 | CPUID_PAT | CPUID_CMOV | CPUID_MCA | CPUID_PGE |
+            CPUID_MTRR | CPUID_SEP | CPUID_APIC | CPUID_CX8 | CPUID_MCE |
+            CPUID_PAE | CPUID_MSR | CPUID_TSC | CPUID_PSE | CPUID_DE |
+            CPUID_VME | CPUID_FP87,
+        .features[FEAT_1_ECX] =
+            CPUID_EXT_RDRAND | CPUID_EXT_F16C | CPUID_EXT_AVX |
+            CPUID_EXT_XSAVE | CPUID_EXT_AES |  CPUID_EXT_POPCNT |
+            CPUID_EXT_MOVBE | CPUID_EXT_SSE42 | CPUID_EXT_SSE41 |
+            CPUID_EXT_CX16 | CPUID_EXT_FMA | CPUID_EXT_SSSE3 |
+            CPUID_EXT_MONITOR | CPUID_EXT_PCLMULQDQ | CPUID_EXT_SSE3,
+        .features[FEAT_8000_0001_EDX] =
+            CPUID_EXT2_LM | CPUID_EXT2_RDTSCP | CPUID_EXT2_PDPE1GB |
+            CPUID_EXT2_FFXSR | CPUID_EXT2_MMXEXT | CPUID_EXT2_NX |
+            CPUID_EXT2_SYSCALL,
+        .features[FEAT_8000_0001_ECX] =
+            CPUID_EXT3_OSVW | CPUID_EXT3_3DNOWPREFETCH |
+            CPUID_EXT3_MISALIGNSSE | CPUID_EXT3_SSE4A | CPUID_EXT3_ABM |
+            CPUID_EXT3_CR8LEG | CPUID_EXT3_SVM | CPUID_EXT3_LAHF_LM |
+            CPUID_EXT3_TOPOEXT | CPUID_EXT3_PERFCORE,
+        .features[FEAT_8000_0008_EBX] =
+            CPUID_8000_0008_EBX_CLZERO | CPUID_8000_0008_EBX_XSAVEERPTR |
+            CPUID_8000_0008_EBX_WBNOINVD | CPUID_8000_0008_EBX_IBPB |
+            CPUID_8000_0008_EBX_STIBP,
+        .features[FEAT_7_0_EBX] =
+            CPUID_7_0_EBX_FSGSBASE | CPUID_7_0_EBX_BMI1 | CPUID_7_0_EBX_AVX2 |
+            CPUID_7_0_EBX_SMEP | CPUID_7_0_EBX_BMI2 | CPUID_7_0_EBX_RDSEED |
+            CPUID_7_0_EBX_ADX | CPUID_7_0_EBX_SMAP | CPUID_7_0_EBX_CLFLUSHOPT |
+            CPUID_7_0_EBX_SHA_NI | CPUID_7_0_EBX_CLWB,
+        .features[FEAT_7_0_ECX] =
+            CPUID_7_0_ECX_UMIP | CPUID_7_0_ECX_RDPID,
+        .features[FEAT_XSAVE] =
+            CPUID_XSAVE_XSAVEOPT | CPUID_XSAVE_XSAVEC |
+            CPUID_XSAVE_XGETBV1 | CPUID_XSAVE_XSAVES,
+        .features[FEAT_6_EAX] =
+            CPUID_6_EAX_ARAT,
+        .features[FEAT_SVM] =
+            CPUID_SVM_NPT | CPUID_SVM_NRIPSAVE,
+        .xlevel = 0x8000001E,
+        .model_id = "AMD EPYC-Rome Processor",
+        .cache_info = &epyc_rome_cache_info,
+    },
 };
 
 /* KVM-specific features that are automatically added/removed
@@ -4849,6 +4972,7 @@ static void x86_cpu_list_entry(gpointer data, gpointer user_data)
     g_autofree char *name = x86_cpu_class_get_model_name(cc);
     g_autofree char *desc = g_strdup(cc->model_description);
     g_autofree char *alias_of = x86_cpu_class_get_alias_of(cc);
+    g_autofree char *model_id = x86_cpu_class_get_model_id(cc);
 
     if (!desc && alias_of) {
         if (cc->model && cc->model->version == CPU_VERSION_AUTO) {
@@ -4857,11 +4981,14 @@ static void x86_cpu_list_entry(gpointer data, gpointer user_data)
             desc = g_strdup_printf("(alias of %s)", alias_of);
         }
     }
+    if (!desc && cc->model && cc->model->note) {
+        desc = g_strdup_printf("%s [%s]", model_id, cc->model->note);
+    }
     if (!desc) {
-        desc = x86_cpu_class_get_model_id(cc);
+        desc = g_strdup_printf("%s", model_id);
     }
 
-    qemu_printf("x86 %-20s  %-48s\n", name, desc);
+    qemu_printf("x86 %-20s  %-58s\n", name, desc);
 }
 
 /* list available CPU models and flags */
@@ -5338,6 +5465,7 @@ static void x86_register_cpudef_types(X86CPUDefinition *def)
             x86_cpu_versioned_model_name(def, vdef->version);
         m->cpudef = def;
         m->version = vdef->version;
+        m->note = vdef->note;
         x86_register_cpu_model_type(name, m);
 
         if (vdef->alias) {
@@ -5369,6 +5497,11 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
     uint32_t die_offset;
     uint32_t limit;
     uint32_t signature[3];
+    X86CPUTopoInfo topo_info;
+
+    topo_info.dies_per_pkg = env->nr_dies;
+    topo_info.cores_per_die = cs->nr_cores;
+    topo_info.threads_per_core = cs->nr_threads;
 
     /* Calculate & apply limits for different index ranges */
     if (index >= 0xC0000000) {
@@ -5455,8 +5588,7 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
                                     eax, ebx, ecx, edx);
                 break;
             case 3: /* L3 cache info */
-                die_offset = apicid_die_offset(env->nr_dies,
-                                        cs->nr_cores, cs->nr_threads);
+                die_offset = apicid_die_offset(&topo_info);
                 if (cpu->enable_l3_cache) {
                     encode_cache_cpuid4(env->cache_info_cpuid4.l3_cache,
                                         (1 << die_offset), cs->nr_cores,
@@ -5547,14 +5679,12 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
 
         switch (count) {
         case 0:
-            *eax = apicid_core_offset(env->nr_dies,
-                                      cs->nr_cores, cs->nr_threads);
+            *eax = apicid_core_offset(&topo_info);
             *ebx = cs->nr_threads;
             *ecx |= CPUID_TOPOLOGY_LEVEL_SMT;
             break;
         case 1:
-            *eax = apicid_pkg_offset(env->nr_dies,
-                                     cs->nr_cores, cs->nr_threads);
+            *eax = apicid_pkg_offset(&topo_info);
             *ebx = cs->nr_cores * cs->nr_threads;
             *ecx |= CPUID_TOPOLOGY_LEVEL_CORE;
             break;
@@ -5578,20 +5708,17 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
         *edx = cpu->apic_id;
         switch (count) {
         case 0:
-            *eax = apicid_core_offset(env->nr_dies, cs->nr_cores,
-                                                    cs->nr_threads);
+            *eax = apicid_core_offset(&topo_info);
             *ebx = cs->nr_threads;
             *ecx |= CPUID_TOPOLOGY_LEVEL_SMT;
             break;
         case 1:
-            *eax = apicid_die_offset(env->nr_dies, cs->nr_cores,
-                                                   cs->nr_threads);
+            *eax = apicid_die_offset(&topo_info);
             *ebx = cs->nr_cores * cs->nr_threads;
             *ecx |= CPUID_TOPOLOGY_LEVEL_CORE;
             break;
         case 2:
-            *eax = apicid_pkg_offset(env->nr_dies, cs->nr_cores,
-                                                   cs->nr_threads);
+            *eax = apicid_pkg_offset(&topo_info);
             *ebx = env->nr_dies * cs->nr_cores * cs->nr_threads;
             *ecx |= CPUID_TOPOLOGY_LEVEL_DIE;
             break;
@@ -5855,9 +5982,9 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
     }
 }
 
-/* CPUClass::reset() */
-static void x86_cpu_reset(CPUState *s)
+static void x86_cpu_reset(DeviceState *dev)
 {
+    CPUState *s = CPU(dev);
     X86CPU *cpu = X86_CPU(s);
     X86CPUClass *xcc = X86_CPU_GET_CLASS(cpu);
     CPUX86State *env = &cpu->env;
@@ -5865,7 +5992,7 @@ static void x86_cpu_reset(CPUState *s)
     uint64_t xcr0;
     int i;
 
-    xcc->parent_reset(s);
+    xcc->parent_reset(dev);
 
     memset(env, 0, offsetof(CPUX86State, end_reset_fields));
 
@@ -6830,6 +6957,7 @@ static void x86_cpu_initfn(Object *obj)
     FeatureWord w;
 
     env->nr_dies = 1;
+    env->nr_nodes = 1;
     cpu_set_cpustate_pointers(cpu);
 
     object_property_add(obj, "family", "int",
@@ -7169,7 +7297,7 @@ static void x86_cpu_common_class_init(ObjectClass *oc, void *data)
                                       &xcc->parent_unrealize);
     device_class_set_props(dc, x86_cpu_properties);
 
-    cpu_class_set_parent_reset(cc, x86_cpu_reset, &xcc->parent_reset);
+    device_class_set_parent_reset(dc, x86_cpu_reset, &xcc->parent_reset);
     cc->reset_dump_flags = CPU_DUMP_FPU | CPU_DUMP_CCOP;
 
     cc->class_by_name = x86_cpu_class_by_name;
diff --git a/target/i386/cpu.h b/target/i386/cpu.h
index c2d89315b9..60d797d594 100644
--- a/target/i386/cpu.h
+++ b/target/i386/cpu.h
@@ -792,6 +792,8 @@ typedef uint64_t FeatureWordArray[FEATURE_WORDS];
 #define CPUID_8000_0008_EBX_WBNOINVD    (1U << 9)
 /* Indirect Branch Prediction Barrier */
 #define CPUID_8000_0008_EBX_IBPB        (1U << 12)
+/* Single Thread Indirect Branch Predictors */
+#define CPUID_8000_0008_EBX_STIBP       (1U << 15)
 
 #define CPUID_XSAVE_XSAVEOPT   (1U << 0)
 #define CPUID_XSAVE_XSAVEC     (1U << 1)
@@ -1607,6 +1609,7 @@ typedef struct CPUX86State {
     TPRAccess tpr_access_type;
 
     unsigned nr_dies;
+    unsigned nr_nodes;
 } CPUX86State;
 
 struct kvm_msrs;
diff --git a/target/lm32/cpu-qom.h b/target/lm32/cpu-qom.h
index dc9ac9ac9f..bdedb3759a 100644
--- a/target/lm32/cpu-qom.h
+++ b/target/lm32/cpu-qom.h
@@ -44,7 +44,7 @@ typedef struct LM32CPUClass {
     /*< public >*/
 
     DeviceRealize parent_realize;
-    void (*parent_reset)(CPUState *cpu);
+    DeviceReset parent_reset;
 } LM32CPUClass;
 
 typedef struct LM32CPU LM32CPU;
diff --git a/target/lm32/cpu.c b/target/lm32/cpu.c
index 687bf35e65..c50ad5fa15 100644
--- a/target/lm32/cpu.c
+++ b/target/lm32/cpu.c
@@ -99,14 +99,14 @@ static bool lm32_cpu_has_work(CPUState *cs)
     return cs->interrupt_request & CPU_INTERRUPT_HARD;
 }
 
-/* CPUClass::reset() */
-static void lm32_cpu_reset(CPUState *s)
+static void lm32_cpu_reset(DeviceState *dev)
 {
+    CPUState *s = CPU(dev);
     LM32CPU *cpu = LM32_CPU(s);
     LM32CPUClass *lcc = LM32_CPU_GET_CLASS(cpu);
     CPULM32State *env = &cpu->env;
 
-    lcc->parent_reset(s);
+    lcc->parent_reset(dev);
 
     /* reset cpu state */
     memset(env, 0, offsetof(CPULM32State, end_reset_fields));
@@ -218,7 +218,7 @@ static void lm32_cpu_class_init(ObjectClass *oc, void *data)
 
     device_class_set_parent_realize(dc, lm32_cpu_realizefn,
                                     &lcc->parent_realize);
-    cpu_class_set_parent_reset(cc, lm32_cpu_reset, &lcc->parent_reset);
+    device_class_set_parent_reset(dc, lm32_cpu_reset, &lcc->parent_reset);
 
     cc->class_by_name = lm32_cpu_class_by_name;
     cc->has_work = lm32_cpu_has_work;
diff --git a/target/m68k/cpu-qom.h b/target/m68k/cpu-qom.h
index b56da8a213..88b11b60f1 100644
--- a/target/m68k/cpu-qom.h
+++ b/target/m68k/cpu-qom.h
@@ -44,7 +44,7 @@ typedef struct M68kCPUClass {
     /*< public >*/
 
     DeviceRealize parent_realize;
-    void (*parent_reset)(CPUState *cpu);
+    DeviceReset parent_reset;
 } M68kCPUClass;
 
 typedef struct M68kCPU M68kCPU;
diff --git a/target/m68k/cpu.c b/target/m68k/cpu.c
index f0653cda2f..9445fcd6df 100644
--- a/target/m68k/cpu.c
+++ b/target/m68k/cpu.c
@@ -41,16 +41,16 @@ static void m68k_set_feature(CPUM68KState *env, int feature)
     env->features |= (1u << feature);
 }
 
-/* CPUClass::reset() */
-static void m68k_cpu_reset(CPUState *s)
+static void m68k_cpu_reset(DeviceState *dev)
 {
+    CPUState *s = CPU(dev);
     M68kCPU *cpu = M68K_CPU(s);
     M68kCPUClass *mcc = M68K_CPU_GET_CLASS(cpu);
     CPUM68KState *env = &cpu->env;
     floatx80 nan = floatx80_default_nan(NULL);
     int i;
 
-    mcc->parent_reset(s);
+    mcc->parent_reset(dev);
 
     memset(env, 0, offsetof(CPUM68KState, end_reset_fields));
 #ifdef CONFIG_SOFTMMU
@@ -273,7 +273,7 @@ static void m68k_cpu_class_init(ObjectClass *c, void *data)
 
     device_class_set_parent_realize(dc, m68k_cpu_realizefn,
                                     &mcc->parent_realize);
-    cpu_class_set_parent_reset(cc, m68k_cpu_reset, &mcc->parent_reset);
+    device_class_set_parent_reset(dc, m68k_cpu_reset, &mcc->parent_reset);
 
     cc->class_by_name = m68k_cpu_class_by_name;
     cc->has_work = m68k_cpu_has_work;
diff --git a/target/microblaze/cpu-qom.h b/target/microblaze/cpu-qom.h
index 49b07cc697..053ba44ee8 100644
--- a/target/microblaze/cpu-qom.h
+++ b/target/microblaze/cpu-qom.h
@@ -44,7 +44,7 @@ typedef struct MicroBlazeCPUClass {
     /*< public >*/
 
     DeviceRealize parent_realize;
-    void (*parent_reset)(CPUState *cpu);
+    DeviceReset parent_reset;
 } MicroBlazeCPUClass;
 
 typedef struct MicroBlazeCPU MicroBlazeCPU;
diff --git a/target/microblaze/cpu.c b/target/microblaze/cpu.c
index 8c90110e52..a2c2f271df 100644
--- a/target/microblaze/cpu.c
+++ b/target/microblaze/cpu.c
@@ -102,14 +102,14 @@ static void microblaze_cpu_set_irq(void *opaque, int irq, int level)
 }
 #endif
 
-/* CPUClass::reset() */
-static void mb_cpu_reset(CPUState *s)
+static void mb_cpu_reset(DeviceState *dev)
 {
+    CPUState *s = CPU(dev);
     MicroBlazeCPU *cpu = MICROBLAZE_CPU(s);
     MicroBlazeCPUClass *mcc = MICROBLAZE_CPU_GET_CLASS(cpu);
     CPUMBState *env = &cpu->env;
 
-    mcc->parent_reset(s);
+    mcc->parent_reset(dev);
 
     memset(env, 0, offsetof(CPUMBState, end_reset_fields));
     env->res_addr = RES_ADDR_NONE;
@@ -292,7 +292,7 @@ static void mb_cpu_class_init(ObjectClass *oc, void *data)
 
     device_class_set_parent_realize(dc, mb_cpu_realizefn,
                                     &mcc->parent_realize);
-    cpu_class_set_parent_reset(cc, mb_cpu_reset, &mcc->parent_reset);
+    device_class_set_parent_reset(dc, mb_cpu_reset, &mcc->parent_reset);
 
     cc->class_by_name = mb_cpu_class_by_name;
     cc->has_work = mb_cpu_has_work;
diff --git a/target/mips/cpu-qom.h b/target/mips/cpu-qom.h
index a430c0fe4b..9d0df6c034 100644
--- a/target/mips/cpu-qom.h
+++ b/target/mips/cpu-qom.h
@@ -48,7 +48,7 @@ typedef struct MIPSCPUClass {
     /*< public >*/
 
     DeviceRealize parent_realize;
-    void (*parent_reset)(CPUState *cpu);
+    DeviceReset parent_reset;
     const struct mips_def_t *cpu_def;
 } MIPSCPUClass;
 
diff --git a/target/mips/cpu.c b/target/mips/cpu.c
index 6cd6b9650b..e86cd06548 100644
--- a/target/mips/cpu.c
+++ b/target/mips/cpu.c
@@ -96,14 +96,14 @@ static bool mips_cpu_has_work(CPUState *cs)
     return has_work;
 }
 
-/* CPUClass::reset() */
-static void mips_cpu_reset(CPUState *s)
+static void mips_cpu_reset(DeviceState *dev)
 {
+    CPUState *s = CPU(dev);
     MIPSCPU *cpu = MIPS_CPU(s);
     MIPSCPUClass *mcc = MIPS_CPU_GET_CLASS(cpu);
     CPUMIPSState *env = &cpu->env;
 
-    mcc->parent_reset(s);
+    mcc->parent_reset(dev);
 
     memset(env, 0, offsetof(CPUMIPSState, end_reset_fields));
 
@@ -189,7 +189,7 @@ static void mips_cpu_class_init(ObjectClass *c, void *data)
 
     device_class_set_parent_realize(dc, mips_cpu_realizefn,
                                     &mcc->parent_realize);
-    cpu_class_set_parent_reset(cc, mips_cpu_reset, &mcc->parent_reset);
+    device_class_set_parent_reset(dc, mips_cpu_reset, &mcc->parent_reset);
 
     cc->class_by_name = mips_cpu_class_by_name;
     cc->has_work = mips_cpu_has_work;
diff --git a/target/moxie/cpu.c b/target/moxie/cpu.c
index cf47bc709b..6e0443ccb7 100644
--- a/target/moxie/cpu.c
+++ b/target/moxie/cpu.c
@@ -35,13 +35,14 @@ static bool moxie_cpu_has_work(CPUState *cs)
     return cs->interrupt_request & CPU_INTERRUPT_HARD;
 }
 
-static void moxie_cpu_reset(CPUState *s)
+static void moxie_cpu_reset(DeviceState *dev)
 {
+    CPUState *s = CPU(dev);
     MoxieCPU *cpu = MOXIE_CPU(s);
     MoxieCPUClass *mcc = MOXIE_CPU_GET_CLASS(cpu);
     CPUMoxieState *env = &cpu->env;
 
-    mcc->parent_reset(s);
+    mcc->parent_reset(dev);
 
     memset(env, 0, offsetof(CPUMoxieState, end_reset_fields));
     env->pc = 0x1000;
@@ -101,7 +102,7 @@ static void moxie_cpu_class_init(ObjectClass *oc, void *data)
 
     device_class_set_parent_realize(dc, moxie_cpu_realizefn,
                                     &mcc->parent_realize);
-    cpu_class_set_parent_reset(cc, moxie_cpu_reset, &mcc->parent_reset);
+    device_class_set_parent_reset(dc, moxie_cpu_reset, &mcc->parent_reset);
 
     cc->class_by_name = moxie_cpu_class_by_name;
 
diff --git a/target/moxie/cpu.h b/target/moxie/cpu.h
index 01dca548e5..455553b794 100644
--- a/target/moxie/cpu.h
+++ b/target/moxie/cpu.h
@@ -69,7 +69,7 @@ typedef struct MoxieCPUClass {
     /*< public >*/
 
     DeviceRealize parent_realize;
-    void (*parent_reset)(CPUState *cpu);
+    DeviceReset parent_reset;
 } MoxieCPUClass;
 
 /**
diff --git a/target/nios2/cpu.c b/target/nios2/cpu.c
index 1856b7fcc7..8f7011fcb9 100644
--- a/target/nios2/cpu.c
+++ b/target/nios2/cpu.c
@@ -39,9 +39,9 @@ static bool nios2_cpu_has_work(CPUState *cs)
     return cs->interrupt_request & (CPU_INTERRUPT_HARD | CPU_INTERRUPT_NMI);
 }
 
-/* CPUClass::reset() */
-static void nios2_cpu_reset(CPUState *cs)
+static void nios2_cpu_reset(DeviceState *dev)
 {
+    CPUState *cs = CPU(dev);
     Nios2CPU *cpu = NIOS2_CPU(cs);
     Nios2CPUClass *ncc = NIOS2_CPU_GET_CLASS(cpu);
     CPUNios2State *env = &cpu->env;
@@ -51,7 +51,7 @@ static void nios2_cpu_reset(CPUState *cs)
         log_cpu_state(cs, 0);
     }
 
-    ncc->parent_reset(cs);
+    ncc->parent_reset(dev);
 
     memset(env->regs, 0, sizeof(uint32_t) * NUM_CORE_REGS);
     env->regs[R_PC] = cpu->reset_addr;
@@ -188,7 +188,7 @@ static void nios2_cpu_class_init(ObjectClass *oc, void *data)
     device_class_set_parent_realize(dc, nios2_cpu_realizefn,
                                     &ncc->parent_realize);
     device_class_set_props(dc, nios2_properties);
-    cpu_class_set_parent_reset(cc, nios2_cpu_reset, &ncc->parent_reset);
+    device_class_set_parent_reset(dc, nios2_cpu_reset, &ncc->parent_reset);
 
     cc->class_by_name = nios2_cpu_class_by_name;
     cc->has_work = nios2_cpu_has_work;
diff --git a/target/nios2/cpu.h b/target/nios2/cpu.h
index 78f633f970..4dddf9c3a1 100644
--- a/target/nios2/cpu.h
+++ b/target/nios2/cpu.h
@@ -50,7 +50,7 @@ typedef struct Nios2CPUClass {
     /*< public >*/
 
     DeviceRealize parent_realize;
-    void (*parent_reset)(CPUState *cpu);
+    DeviceReset parent_reset;
 } Nios2CPUClass;
 
 #define TARGET_HAS_ICE 1
diff --git a/target/openrisc/cpu.c b/target/openrisc/cpu.c
index 5cd04dafab..5528c0918f 100644
--- a/target/openrisc/cpu.c
+++ b/target/openrisc/cpu.c
@@ -41,13 +41,13 @@ static void openrisc_disas_set_info(CPUState *cpu, disassemble_info *info)
     info->print_insn = print_insn_or1k;
 }
 
-/* CPUClass::reset() */
-static void openrisc_cpu_reset(CPUState *s)
+static void openrisc_cpu_reset(DeviceState *dev)
 {
+    CPUState *s = CPU(dev);
     OpenRISCCPU *cpu = OPENRISC_CPU(s);
     OpenRISCCPUClass *occ = OPENRISC_CPU_GET_CLASS(cpu);
 
-    occ->parent_reset(s);
+    occ->parent_reset(dev);
 
     memset(&cpu->env, 0, offsetof(CPUOpenRISCState, end_reset_fields));
 
@@ -150,7 +150,7 @@ static void openrisc_cpu_class_init(ObjectClass *oc, void *data)
 
     device_class_set_parent_realize(dc, openrisc_cpu_realizefn,
                                     &occ->parent_realize);
-    cpu_class_set_parent_reset(cc, openrisc_cpu_reset, &occ->parent_reset);
+    device_class_set_parent_reset(dc, openrisc_cpu_reset, &occ->parent_reset);
 
     cc->class_by_name = openrisc_cpu_class_by_name;
     cc->has_work = openrisc_cpu_has_work;
diff --git a/target/openrisc/cpu.h b/target/openrisc/cpu.h
index d9484b802f..f37a52e153 100644
--- a/target/openrisc/cpu.h
+++ b/target/openrisc/cpu.h
@@ -48,7 +48,7 @@ typedef struct OpenRISCCPUClass {
     /*< public >*/
 
     DeviceRealize parent_realize;
-    void (*parent_reset)(CPUState *cpu);
+    DeviceReset parent_reset;
 } OpenRISCCPUClass;
 
 #define TARGET_INSN_START_EXTRA_WORDS 1
diff --git a/target/ppc/cpu-qom.h b/target/ppc/cpu-qom.h
index 15d6b54a7d..000c7d405b 100644
--- a/target/ppc/cpu-qom.h
+++ b/target/ppc/cpu-qom.h
@@ -166,7 +166,7 @@ typedef struct PowerPCCPUClass {
 
     DeviceRealize parent_realize;
     DeviceUnrealize parent_unrealize;
-    void (*parent_reset)(CPUState *cpu);
+    DeviceReset parent_reset;
     void (*parent_parse_features)(const char *type, char *str, Error **errp);
 
     uint32_t pvr;
diff --git a/target/ppc/translate_init.inc.c b/target/ppc/translate_init.inc.c
index 997c8b0b4b..e853164a86 100644
--- a/target/ppc/translate_init.inc.c
+++ b/target/ppc/translate_init.inc.c
@@ -10663,16 +10663,16 @@ static bool ppc_cpu_has_work(CPUState *cs)
     return msr_ee && (cs->interrupt_request & CPU_INTERRUPT_HARD);
 }
 
-/* CPUClass::reset() */
-static void ppc_cpu_reset(CPUState *s)
+static void ppc_cpu_reset(DeviceState *dev)
 {
+    CPUState *s = CPU(dev);
     PowerPCCPU *cpu = POWERPC_CPU(s);
     PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu);
     CPUPPCState *env = &cpu->env;
     target_ulong msr;
     int i;
 
-    pcc->parent_reset(s);
+    pcc->parent_reset(dev);
 
     msr = (target_ulong)0;
     msr |= (target_ulong)MSR_HVB;
@@ -10879,7 +10879,7 @@ static void ppc_cpu_class_init(ObjectClass *oc, void *data)
     pcc->interrupts_big_endian = ppc_cpu_interrupts_big_endian_always;
     device_class_set_props(dc, ppc_cpu_properties);
 
-    cpu_class_set_parent_reset(cc, ppc_cpu_reset, &pcc->parent_reset);
+    device_class_set_parent_reset(dc, ppc_cpu_reset, &pcc->parent_reset);
 
     cc->class_by_name = ppc_cpu_class_by_name;
     pcc->parent_parse_features = cc->parse_features;
diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index c0b7023100..4e578239d3 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -330,13 +330,14 @@ void restore_state_to_opc(CPURISCVState *env, TranslationBlock *tb,
     env->pc = data[0];
 }
 
-static void riscv_cpu_reset(CPUState *cs)
+static void riscv_cpu_reset(DeviceState *dev)
 {
+    CPUState *cs = CPU(dev);
     RISCVCPU *cpu = RISCV_CPU(cs);
     RISCVCPUClass *mcc = RISCV_CPU_GET_CLASS(cpu);
     CPURISCVState *env = &cpu->env;
 
-    mcc->parent_reset(cs);
+    mcc->parent_reset(dev);
 #ifndef CONFIG_USER_ONLY
     env->priv = PRV_M;
     env->mstatus &= ~(MSTATUS_MIE | MSTATUS_MPRV);
@@ -511,7 +512,7 @@ static void riscv_cpu_class_init(ObjectClass *c, void *data)
     device_class_set_parent_realize(dc, riscv_cpu_realize,
                                     &mcc->parent_realize);
 
-    cpu_class_set_parent_reset(cc, riscv_cpu_reset, &mcc->parent_reset);
+    device_class_set_parent_reset(dc, riscv_cpu_reset, &mcc->parent_reset);
 
     cc->class_by_name = riscv_cpu_class_by_name;
     cc->has_work = riscv_cpu_has_work;
diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h
index 31458c5b4a..7d21addbab 100644
--- a/target/riscv/cpu.h
+++ b/target/riscv/cpu.h
@@ -234,7 +234,7 @@ typedef struct RISCVCPUClass {
     CPUClass parent_class;
     /*< public >*/
     DeviceRealize parent_realize;
-    void (*parent_reset)(CPUState *cpu);
+    DeviceReset parent_reset;
 } RISCVCPUClass;
 
 /**
diff --git a/target/s390x/cpu-qom.h b/target/s390x/cpu-qom.h
index dbe5346ec9..1630818c28 100644
--- a/target/s390x/cpu-qom.h
+++ b/target/s390x/cpu-qom.h
@@ -61,7 +61,7 @@ typedef struct S390CPUClass {
     const char *desc;
 
     DeviceRealize parent_realize;
-    void (*parent_reset)(CPUState *cpu);
+    DeviceReset parent_reset;
     void (*load_normal)(CPUState *cpu);
     void (*reset)(CPUState *cpu, cpu_reset_type type);
 } S390CPUClass;
diff --git a/target/s390x/cpu.c b/target/s390x/cpu.c
index 3dd396e870..427a46e3e1 100644
--- a/target/s390x/cpu.c
+++ b/target/s390x/cpu.c
@@ -96,8 +96,9 @@ static void s390_cpu_reset(CPUState *s, cpu_reset_type type)
     S390CPU *cpu = S390_CPU(s);
     S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
     CPUS390XState *env = &cpu->env;
+    DeviceState *dev = DEVICE(s);
 
-    scc->parent_reset(s);
+    scc->parent_reset(dev);
     cpu->env.sigp_order = 0;
     s390_cpu_set_state(S390_CPU_STATE_STOPPED, cpu);
 
@@ -450,8 +451,9 @@ static Property s390x_cpu_properties[] = {
     DEFINE_PROP_END_OF_LIST()
 };
 
-static void s390_cpu_reset_full(CPUState *s)
+static void s390_cpu_reset_full(DeviceState *dev)
 {
+    CPUState *s = CPU(dev);
     return s390_cpu_reset(s, S390_CPU_RESET_CLEAR);
 }
 
@@ -466,7 +468,7 @@ static void s390_cpu_class_init(ObjectClass *oc, void *data)
     device_class_set_props(dc, s390x_cpu_properties);
     dc->user_creatable = true;
 
-    cpu_class_set_parent_reset(cc, s390_cpu_reset_full, &scc->parent_reset);
+    device_class_set_parent_reset(dc, s390_cpu_reset_full, &scc->parent_reset);
 #if !defined(CONFIG_USER_ONLY)
     scc->load_normal = s390_cpu_load_normal;
 #endif
diff --git a/target/sh4/cpu-qom.h b/target/sh4/cpu-qom.h
index 0c56d055ba..72a63f3fd3 100644
--- a/target/sh4/cpu-qom.h
+++ b/target/sh4/cpu-qom.h
@@ -51,7 +51,7 @@ typedef struct SuperHCPUClass {
     /*< public >*/
 
     DeviceRealize parent_realize;
-    void (*parent_reset)(CPUState *cpu);
+    DeviceReset parent_reset;
 
     uint32_t pvr;
     uint32_t prr;
diff --git a/target/sh4/cpu.c b/target/sh4/cpu.c
index 70c8d8170f..3c68021c56 100644
--- a/target/sh4/cpu.c
+++ b/target/sh4/cpu.c
@@ -47,14 +47,14 @@ static bool superh_cpu_has_work(CPUState *cs)
     return cs->interrupt_request & CPU_INTERRUPT_HARD;
 }
 
-/* CPUClass::reset() */
-static void superh_cpu_reset(CPUState *s)
+static void superh_cpu_reset(DeviceState *dev)
 {
+    CPUState *s = CPU(dev);
     SuperHCPU *cpu = SUPERH_CPU(s);
     SuperHCPUClass *scc = SUPERH_CPU_GET_CLASS(cpu);
     CPUSH4State *env = &cpu->env;
 
-    scc->parent_reset(s);
+    scc->parent_reset(dev);
 
     memset(env, 0, offsetof(CPUSH4State, end_reset_fields));
 
@@ -214,7 +214,7 @@ static void superh_cpu_class_init(ObjectClass *oc, void *data)
     device_class_set_parent_realize(dc, superh_cpu_realizefn,
                                     &scc->parent_realize);
 
-    cpu_class_set_parent_reset(cc, superh_cpu_reset, &scc->parent_reset);
+    device_class_set_parent_reset(dc, superh_cpu_reset, &scc->parent_reset);
 
     cc->class_by_name = superh_cpu_class_by_name;
     cc->has_work = superh_cpu_has_work;
diff --git a/target/sparc/cpu-qom.h b/target/sparc/cpu-qom.h
index 7442e2768e..8b4d33c21e 100644
--- a/target/sparc/cpu-qom.h
+++ b/target/sparc/cpu-qom.h
@@ -49,7 +49,7 @@ typedef struct SPARCCPUClass {
     /*< public >*/
 
     DeviceRealize parent_realize;
-    void (*parent_reset)(CPUState *cpu);
+    DeviceReset parent_reset;
     sparc_def_t *cpu_def;
 } SPARCCPUClass;
 
diff --git a/target/sparc/cpu.c b/target/sparc/cpu.c
index eeaecbd8d6..3f05aba9d6 100644
--- a/target/sparc/cpu.c
+++ b/target/sparc/cpu.c
@@ -28,14 +28,14 @@
 
 //#define DEBUG_FEATURES
 
-/* CPUClass::reset() */
-static void sparc_cpu_reset(CPUState *s)
+static void sparc_cpu_reset(DeviceState *dev)
 {
+    CPUState *s = CPU(dev);
     SPARCCPU *cpu = SPARC_CPU(s);
     SPARCCPUClass *scc = SPARC_CPU_GET_CLASS(cpu);
     CPUSPARCState *env = &cpu->env;
 
-    scc->parent_reset(s);
+    scc->parent_reset(dev);
 
     memset(env, 0, offsetof(CPUSPARCState, end_reset_fields));
     env->cwp = 0;
@@ -859,7 +859,7 @@ static void sparc_cpu_class_init(ObjectClass *oc, void *data)
                                     &scc->parent_realize);
     device_class_set_props(dc, sparc_cpu_properties);
 
-    cpu_class_set_parent_reset(cc, sparc_cpu_reset, &scc->parent_reset);
+    device_class_set_parent_reset(dc, sparc_cpu_reset, &scc->parent_reset);
 
     cc->class_by_name = sparc_cpu_class_by_name;
     cc->parse_features = sparc_cpu_parse_features;
diff --git a/target/tilegx/cpu.c b/target/tilegx/cpu.c
index cd422a0467..1fee87c094 100644
--- a/target/tilegx/cpu.c
+++ b/target/tilegx/cpu.c
@@ -68,13 +68,14 @@ static bool tilegx_cpu_has_work(CPUState *cs)
     return true;
 }
 
-static void tilegx_cpu_reset(CPUState *s)
+static void tilegx_cpu_reset(DeviceState *dev)
 {
+    CPUState *s = CPU(dev);
     TileGXCPU *cpu = TILEGX_CPU(s);
     TileGXCPUClass *tcc = TILEGX_CPU_GET_CLASS(cpu);
     CPUTLGState *env = &cpu->env;
 
-    tcc->parent_reset(s);
+    tcc->parent_reset(dev);
 
     memset(env, 0, offsetof(CPUTLGState, end_reset_fields));
 }
@@ -142,7 +143,7 @@ static void tilegx_cpu_class_init(ObjectClass *oc, void *data)
     device_class_set_parent_realize(dc, tilegx_cpu_realizefn,
                                     &tcc->parent_realize);
 
-    cpu_class_set_parent_reset(cc, tilegx_cpu_reset, &tcc->parent_reset);
+    device_class_set_parent_reset(dc, tilegx_cpu_reset, &tcc->parent_reset);
 
     cc->class_by_name = tilegx_cpu_class_by_name;
     cc->has_work = tilegx_cpu_has_work;
diff --git a/target/tilegx/cpu.h b/target/tilegx/cpu.h
index 9cbec247d2..193b6bbccb 100644
--- a/target/tilegx/cpu.h
+++ b/target/tilegx/cpu.h
@@ -118,7 +118,7 @@ typedef struct TileGXCPUClass {
     /*< public >*/
 
     DeviceRealize parent_realize;
-    void (*parent_reset)(CPUState *cpu);
+    DeviceReset parent_reset;
 } TileGXCPUClass;
 
 /**
diff --git a/target/tricore/cpu-qom.h b/target/tricore/cpu-qom.h
index 7c1e130b4e..cd819e6f24 100644
--- a/target/tricore/cpu-qom.h
+++ b/target/tricore/cpu-qom.h
@@ -36,7 +36,7 @@ typedef struct TriCoreCPUClass {
     /*< public >*/
 
     DeviceRealize parent_realize;
-    void (*parent_reset)(CPUState *cpu);
+    DeviceReset parent_reset;
 } TriCoreCPUClass;
 
 typedef struct TriCoreCPU TriCoreCPU;
diff --git a/target/tricore/cpu.c b/target/tricore/cpu.c
index 85bc9f03a1..743b404a95 100644
--- a/target/tricore/cpu.c
+++ b/target/tricore/cpu.c
@@ -53,13 +53,14 @@ static void tricore_cpu_synchronize_from_tb(CPUState *cs,
     env->PC = tb->pc;
 }
 
-static void tricore_cpu_reset(CPUState *s)
+static void tricore_cpu_reset(DeviceState *dev)
 {
+    CPUState *s = CPU(dev);
     TriCoreCPU *cpu = TRICORE_CPU(s);
     TriCoreCPUClass *tcc = TRICORE_CPU_GET_CLASS(cpu);
     CPUTriCoreState *env = &cpu->env;
 
-    tcc->parent_reset(s);
+    tcc->parent_reset(dev);
 
     cpu_state_reset(env);
 }
@@ -153,7 +154,7 @@ static void tricore_cpu_class_init(ObjectClass *c, void *data)
     device_class_set_parent_realize(dc, tricore_cpu_realizefn,
                                     &mcc->parent_realize);
 
-    cpu_class_set_parent_reset(cc, tricore_cpu_reset, &mcc->parent_reset);
+    device_class_set_parent_reset(dc, tricore_cpu_reset, &mcc->parent_reset);
     cc->class_by_name = tricore_cpu_class_by_name;
     cc->has_work = tricore_cpu_has_work;
 
diff --git a/target/xtensa/cpu-qom.h b/target/xtensa/cpu-qom.h
index 9ac54241bd..3ea93ce1f9 100644
--- a/target/xtensa/cpu-qom.h
+++ b/target/xtensa/cpu-qom.h
@@ -56,7 +56,7 @@ typedef struct XtensaCPUClass {
     /*< public >*/
 
     DeviceRealize parent_realize;
-    void (*parent_reset)(CPUState *cpu);
+    DeviceReset parent_reset;
 
     const XtensaConfig *config;
 } XtensaCPUClass;
diff --git a/target/xtensa/cpu.c b/target/xtensa/cpu.c
index 4856aee8ec..82c2ee0679 100644
--- a/target/xtensa/cpu.c
+++ b/target/xtensa/cpu.c
@@ -67,14 +67,14 @@ bool xtensa_abi_call0(void)
 }
 #endif
 
-/* CPUClass::reset() */
-static void xtensa_cpu_reset(CPUState *s)
+static void xtensa_cpu_reset(DeviceState *dev)
 {
+    CPUState *s = CPU(dev);
     XtensaCPU *cpu = XTENSA_CPU(s);
     XtensaCPUClass *xcc = XTENSA_CPU_GET_CLASS(cpu);
     CPUXtensaState *env = &cpu->env;
 
-    xcc->parent_reset(s);
+    xcc->parent_reset(dev);
 
     env->exception_taken = 0;
     env->pc = env->config->exception_vector[EXC_RESET0 + env->static_vectors];
@@ -184,7 +184,7 @@ static void xtensa_cpu_class_init(ObjectClass *oc, void *data)
     device_class_set_parent_realize(dc, xtensa_cpu_realizefn,
                                     &xcc->parent_realize);
 
-    cpu_class_set_parent_reset(cc, xtensa_cpu_reset, &xcc->parent_reset);
+    device_class_set_parent_reset(dc, xtensa_cpu_reset, &xcc->parent_reset);
 
     cc->class_by_name = xtensa_cpu_class_by_name;
     cc->has_work = xtensa_cpu_has_work;
diff --git a/tests/test-x86-cpuid.c b/tests/test-x86-cpuid.c
index 1942287f33..049030a50e 100644
--- a/tests/test-x86-cpuid.c
+++ b/tests/test-x86-cpuid.c
@@ -28,79 +28,101 @@
 
 static void test_topo_bits(void)
 {
+    X86CPUTopoInfo topo_info = {0};
+
     /* simple tests for 1 thread per core, 1 core per die, 1 die per package */
-    g_assert_cmpuint(apicid_smt_width(1, 1, 1), ==, 0);
-    g_assert_cmpuint(apicid_core_width(1, 1, 1), ==, 0);
-    g_assert_cmpuint(apicid_die_width(1, 1, 1), ==, 0);
+    topo_info = (X86CPUTopoInfo) {0, 1, 1, 1};
+    g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 0);
+    g_assert_cmpuint(apicid_core_width(&topo_info), ==, 0);
+    g_assert_cmpuint(apicid_die_width(&topo_info), ==, 0);
 
-    g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 1, 1, 0), ==, 0);
-    g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 1, 1, 1), ==, 1);
-    g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 1, 1, 2), ==, 2);
-    g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 1, 1, 3), ==, 3);
+    topo_info = (X86CPUTopoInfo) {0, 1, 1, 1};
+    g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 0), ==, 0);
+    g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 1), ==, 1);
+    g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 2), ==, 2);
+    g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 3), ==, 3);
 
 
     /* Test field width calculation for multiple values
      */
-    g_assert_cmpuint(apicid_smt_width(1, 1, 2), ==, 1);
-    g_assert_cmpuint(apicid_smt_width(1, 1, 3), ==, 2);
-    g_assert_cmpuint(apicid_smt_width(1, 1, 4), ==, 2);
-
-    g_assert_cmpuint(apicid_smt_width(1, 1, 14), ==, 4);
-    g_assert_cmpuint(apicid_smt_width(1, 1, 15), ==, 4);
-    g_assert_cmpuint(apicid_smt_width(1, 1, 16), ==, 4);
-    g_assert_cmpuint(apicid_smt_width(1, 1, 17), ==, 5);
-
-
-    g_assert_cmpuint(apicid_core_width(1, 30, 2), ==, 5);
-    g_assert_cmpuint(apicid_core_width(1, 31, 2), ==, 5);
-    g_assert_cmpuint(apicid_core_width(1, 32, 2), ==, 5);
-    g_assert_cmpuint(apicid_core_width(1, 33, 2), ==, 6);
-
-    g_assert_cmpuint(apicid_die_width(1, 30, 2), ==, 0);
-    g_assert_cmpuint(apicid_die_width(2, 30, 2), ==, 1);
-    g_assert_cmpuint(apicid_die_width(3, 30, 2), ==, 2);
-    g_assert_cmpuint(apicid_die_width(4, 30, 2), ==, 2);
+    topo_info = (X86CPUTopoInfo) {0, 1, 1, 2};
+    g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 1);
+    topo_info = (X86CPUTopoInfo) {0, 1, 1, 3};
+    g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 2);
+    topo_info = (X86CPUTopoInfo) {0, 1, 1, 4};
+    g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 2);
+
+    topo_info = (X86CPUTopoInfo) {0, 1, 1, 14};
+    g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 4);
+    topo_info = (X86CPUTopoInfo) {0, 1, 1, 15};
+    g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 4);
+    topo_info = (X86CPUTopoInfo) {0, 1, 1, 16};
+    g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 4);
+    topo_info = (X86CPUTopoInfo) {0, 1, 1, 17};
+    g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 5);
+
+
+    topo_info = (X86CPUTopoInfo) {0, 1, 30, 2};
+    g_assert_cmpuint(apicid_core_width(&topo_info), ==, 5);
+    topo_info = (X86CPUTopoInfo) {0, 1, 31, 2};
+    g_assert_cmpuint(apicid_core_width(&topo_info), ==, 5);
+    topo_info = (X86CPUTopoInfo) {0, 1, 32, 2};
+    g_assert_cmpuint(apicid_core_width(&topo_info), ==, 5);
+    topo_info = (X86CPUTopoInfo) {0, 1, 33, 2};
+    g_assert_cmpuint(apicid_core_width(&topo_info), ==, 6);
+
+    topo_info = (X86CPUTopoInfo) {0, 1, 30, 2};
+    g_assert_cmpuint(apicid_die_width(&topo_info), ==, 0);
+    topo_info = (X86CPUTopoInfo) {0, 2, 30, 2};
+    g_assert_cmpuint(apicid_die_width(&topo_info), ==, 1);
+    topo_info = (X86CPUTopoInfo) {0, 3, 30, 2};
+    g_assert_cmpuint(apicid_die_width(&topo_info), ==, 2);
+    topo_info = (X86CPUTopoInfo) {0, 4, 30, 2};
+    g_assert_cmpuint(apicid_die_width(&topo_info), ==, 2);
 
     /* build a weird topology and see if IDs are calculated correctly
      */
 
     /* This will use 2 bits for thread ID and 3 bits for core ID
      */
-    g_assert_cmpuint(apicid_smt_width(1, 6, 3), ==, 2);
-    g_assert_cmpuint(apicid_core_offset(1, 6, 3), ==, 2);
-    g_assert_cmpuint(apicid_die_offset(1, 6, 3), ==, 5);
-    g_assert_cmpuint(apicid_pkg_offset(1, 6, 3), ==, 5);
-
-    g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 6, 3, 0), ==, 0);
-    g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 6, 3, 1), ==, 1);
-    g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 6, 3, 2), ==, 2);
-
-    g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 6, 3, 1 * 3 + 0), ==,
+    topo_info = (X86CPUTopoInfo) {0, 1, 6, 3};
+    g_assert_cmpuint(apicid_smt_width(&topo_info), ==, 2);
+    g_assert_cmpuint(apicid_core_offset(&topo_info), ==, 2);
+    g_assert_cmpuint(apicid_die_offset(&topo_info), ==, 5);
+    g_assert_cmpuint(apicid_pkg_offset(&topo_info), ==, 5);
+
+    topo_info = (X86CPUTopoInfo) {0, 1, 6, 3};
+    g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 0), ==, 0);
+    g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 1), ==, 1);
+    g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 2), ==, 2);
+
+    topo_info = (X86CPUTopoInfo) {0, 1, 6, 3};
+    g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 1 * 3 + 0), ==,
                      (1 << 2) | 0);
-    g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 6, 3, 1 * 3 + 1), ==,
+    g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 1 * 3 + 1), ==,
                      (1 << 2) | 1);
-    g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 6, 3, 1 * 3 + 2), ==,
+    g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 1 * 3 + 2), ==,
                      (1 << 2) | 2);
 
-    g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 6, 3, 2 * 3 + 0), ==,
+    g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 2 * 3 + 0), ==,
                      (2 << 2) | 0);
-    g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 6, 3, 2 * 3 + 1), ==,
+    g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 2 * 3 + 1), ==,
                      (2 << 2) | 1);
-    g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 6, 3, 2 * 3 + 2), ==,
+    g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 2 * 3 + 2), ==,
                      (2 << 2) | 2);
 
-    g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 6, 3, 5 * 3 + 0), ==,
+    g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 5 * 3 + 0), ==,
                      (5 << 2) | 0);
-    g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 6, 3, 5 * 3 + 1), ==,
+    g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 5 * 3 + 1), ==,
                      (5 << 2) | 1);
-    g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 6, 3, 5 * 3 + 2), ==,
+    g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info, 5 * 3 + 2), ==,
                      (5 << 2) | 2);
 
-    g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 6, 3,
+    g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info,
                      1 * 6 * 3 + 0 * 3 + 0), ==, (1 << 5));
-    g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 6, 3,
+    g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info,
                      1 * 6 * 3 + 1 * 3 + 1), ==, (1 << 5) | (1 << 2) | 1);
-    g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 6, 3,
+    g_assert_cmpuint(x86_apicid_from_cpu_idx(&topo_info,
                      3 * 6 * 3 + 5 * 3 + 2), ==, (3 << 5) | (5 << 2) | 2);
 }