diff --git a/include/hw/i386/x86.h b/include/hw/i386/x86.h
index 9d6effc48971..07c466c8e4b4 100644
--- a/include/hw/i386/x86.h
+++ b/include/hw/i386/x86.h
@@ -93,6 +93,16 @@ CpuInstanceProperties x86_cpu_index_to_props(MachineState *ms,
                                              unsigned cpu_index);
 int64_t x86_get_default_cpu_node_id(const MachineState *ms, int idx);
 const CPUArchIdList *x86_possible_cpu_arch_ids(MachineState *ms);
+CPUArchId *x86_find_cpu_slot(MachineState *ms, uint32_t id, int *idx);
+void x86_rtc_set_cpus_count(ISADevice *rtc, uint16_t cpus_count);
+void x86_cpu_pre_plug(HotplugHandler *hotplug_dev,
+                      DeviceState *dev, Error **errp);
+void x86_cpu_plug(HotplugHandler *hotplug_dev,
+                  DeviceState *dev, Error **errp);
+void x86_cpu_unplug_request_cb(HotplugHandler *hotplug_dev,
+                               DeviceState *dev, Error **errp);
+void x86_cpu_unplug_cb(HotplugHandler *hotplug_dev,
+                       DeviceState *dev, Error **errp);
 
 void x86_bios_rom_init(MemoryRegion *rom_memory, bool isapc_ram_fw);
 
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index a18140421e92..b55369357e5d 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -803,19 +803,6 @@ void pc_hot_add_cpu(MachineState *ms, const int64_t id, Error **errp)
     }
 }
 
-static void rtc_set_cpus_count(ISADevice *rtc, uint16_t cpus_count)
-{
-    if (cpus_count > 0xff) {
-        /* If the number of CPUs can't be represented in 8 bits, the
-         * BIOS must use "FW_CFG_NB_CPUS". Set RTC field to 0 just
-         * to make old BIOSes fail more predictably.
-         */
-        rtc_set_memory(rtc, 0x5f, 0);
-    } else {
-        rtc_set_memory(rtc, 0x5f, cpus_count - 1);
-    }
-}
-
 static
 void pc_machine_done(Notifier *notifier, void *data)
 {
@@ -825,7 +812,7 @@ void pc_machine_done(Notifier *notifier, void *data)
     PCIBus *bus = pcms->bus;
 
     /* set the number of CPUs */
-    rtc_set_cpus_count(x86ms->rtc, x86ms->boot_cpus);
+    x86_rtc_set_cpus_count(x86ms->rtc, x86ms->boot_cpus);
 
     if (bus) {
         int extra_hosts = 0;
@@ -1373,264 +1360,6 @@ static void pc_memory_unplug(HotplugHandler *hotplug_dev,
     error_propagate(errp, local_err);
 }
 
-static int pc_apic_cmp(const void *a, const void *b)
-{
-   CPUArchId *apic_a = (CPUArchId *)a;
-   CPUArchId *apic_b = (CPUArchId *)b;
-
-   return apic_a->arch_id - apic_b->arch_id;
-}
-
-/* returns pointer to CPUArchId descriptor that matches CPU's apic_id
- * in ms->possible_cpus->cpus, if ms->possible_cpus->cpus has no
- * entry corresponding to CPU's apic_id returns NULL.
- */
-static CPUArchId *pc_find_cpu_slot(MachineState *ms, uint32_t id, int *idx)
-{
-    CPUArchId apic_id, *found_cpu;
-
-    apic_id.arch_id = id;
-    found_cpu = bsearch(&apic_id, ms->possible_cpus->cpus,
-        ms->possible_cpus->len, sizeof(*ms->possible_cpus->cpus),
-        pc_apic_cmp);
-    if (found_cpu && idx) {
-        *idx = found_cpu - ms->possible_cpus->cpus;
-    }
-    return found_cpu;
-}
-
-static void pc_cpu_plug(HotplugHandler *hotplug_dev,
-                        DeviceState *dev, Error **errp)
-{
-    CPUArchId *found_cpu;
-    Error *local_err = NULL;
-    X86CPU *cpu = X86_CPU(dev);
-    PCMachineState *pcms = PC_MACHINE(hotplug_dev);
-    X86MachineState *x86ms = X86_MACHINE(hotplug_dev);
-
-    if (x86ms->acpi_dev) {
-        hotplug_handler_plug(x86ms->acpi_dev, dev, &local_err);
-        if (local_err) {
-            goto out;
-        }
-    }
-
-    /* increment the number of CPUs */
-    x86ms->boot_cpus++;
-    if (x86ms->rtc) {
-        rtc_set_cpus_count(x86ms->rtc, x86ms->boot_cpus);
-    }
-    if (x86ms->fw_cfg) {
-        fw_cfg_modify_i16(x86ms->fw_cfg, FW_CFG_NB_CPUS, x86ms->boot_cpus);
-    }
-
-    found_cpu = pc_find_cpu_slot(MACHINE(pcms), cpu->apic_id, NULL);
-    found_cpu->cpu = OBJECT(dev);
-out:
-    error_propagate(errp, local_err);
-}
-static void pc_cpu_unplug_request_cb(HotplugHandler *hotplug_dev,
-                                     DeviceState *dev, Error **errp)
-{
-    int idx = -1;
-    X86CPU *cpu = X86_CPU(dev);
-    PCMachineState *pcms = PC_MACHINE(hotplug_dev);
-    X86MachineState *x86ms = X86_MACHINE(hotplug_dev);
-
-    if (!x86ms->acpi_dev) {
-        error_setg(errp, "CPU hot unplug not supported without ACPI");
-        return;
-    }
-
-    pc_find_cpu_slot(MACHINE(pcms), cpu->apic_id, &idx);
-    assert(idx != -1);
-    if (idx == 0) {
-        error_setg(errp, "Boot CPU is unpluggable");
-        return;
-    }
-
-    hotplug_handler_unplug_request(x86ms->acpi_dev, dev,
-                                   errp);
-}
-
-static void pc_cpu_unplug_cb(HotplugHandler *hotplug_dev,
-                             DeviceState *dev, Error **errp)
-{
-    CPUArchId *found_cpu;
-    Error *local_err = NULL;
-    X86CPU *cpu = X86_CPU(dev);
-    PCMachineState *pcms = PC_MACHINE(hotplug_dev);
-    X86MachineState *x86ms = X86_MACHINE(hotplug_dev);
-
-    hotplug_handler_unplug(x86ms->acpi_dev, dev, &local_err);
-    if (local_err) {
-        goto out;
-    }
-
-    found_cpu = pc_find_cpu_slot(MACHINE(pcms), cpu->apic_id, NULL);
-    found_cpu->cpu = NULL;
-    qdev_unrealize(dev);
-
-    /* decrement the number of CPUs */
-    x86ms->boot_cpus--;
-    /* Update the number of CPUs in CMOS */
-    rtc_set_cpus_count(x86ms->rtc, x86ms->boot_cpus);
-    fw_cfg_modify_i16(x86ms->fw_cfg, FW_CFG_NB_CPUS, x86ms->boot_cpus);
- out:
-    error_propagate(errp, local_err);
-}
-
-static void pc_cpu_pre_plug(HotplugHandler *hotplug_dev,
-                            DeviceState *dev, Error **errp)
-{
-    int idx;
-    CPUState *cs;
-    CPUArchId *cpu_slot;
-    X86CPUTopoIDs topo_ids;
-    X86CPU *cpu = X86_CPU(dev);
-    CPUX86State *env = &cpu->env;
-    MachineState *ms = MACHINE(hotplug_dev);
-    PCMachineState *pcms = PC_MACHINE(hotplug_dev);
-    X86MachineState *x86ms = X86_MACHINE(hotplug_dev);
-    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'",
-                   ms->cpu_type);
-        return;
-    }
-
-    init_topo_info(&topo_info, x86ms);
-
-    env->nr_dies = x86ms->smp_dies;
-
-    /*
-     * If APIC ID is not set,
-     * set it based on socket/die/core/thread properties.
-     */
-    if (cpu->apic_id == UNASSIGNED_APIC_ID) {
-        int max_socket = (ms->smp.max_cpus - 1) /
-                                smp_threads / smp_cores / x86ms->smp_dies;
-
-        /*
-         * die-id was optional in QEMU 4.0 and older, so keep it optional
-         * if there's only one die per socket.
-         */
-        if (cpu->die_id < 0 && x86ms->smp_dies == 1) {
-            cpu->die_id = 0;
-        }
-
-        if (cpu->socket_id < 0) {
-            error_setg(errp, "CPU socket-id is not set");
-            return;
-        } else if (cpu->socket_id > max_socket) {
-            error_setg(errp, "Invalid CPU socket-id: %u must be in range 0:%u",
-                       cpu->socket_id, max_socket);
-            return;
-        }
-        if (cpu->die_id < 0) {
-            error_setg(errp, "CPU die-id is not set");
-            return;
-        } else if (cpu->die_id > x86ms->smp_dies - 1) {
-            error_setg(errp, "Invalid CPU die-id: %u must be in range 0:%u",
-                       cpu->die_id, x86ms->smp_dies - 1);
-            return;
-        }
-        if (cpu->core_id < 0) {
-            error_setg(errp, "CPU core-id is not set");
-            return;
-        } else if (cpu->core_id > (smp_cores - 1)) {
-            error_setg(errp, "Invalid CPU core-id: %u must be in range 0:%u",
-                       cpu->core_id, smp_cores - 1);
-            return;
-        }
-        if (cpu->thread_id < 0) {
-            error_setg(errp, "CPU thread-id is not set");
-            return;
-        } else if (cpu->thread_id > (smp_threads - 1)) {
-            error_setg(errp, "Invalid CPU thread-id: %u must be in range 0:%u",
-                       cpu->thread_id, smp_threads - 1);
-            return;
-        }
-
-        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, &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_ids.pkg_id, topo_ids.die_id, topo_ids.core_id, topo_ids.smt_id,
-            cpu->apic_id, ms->possible_cpus->len - 1);
-        return;
-    }
-
-    if (cpu_slot->cpu) {
-        error_setg(errp, "CPU[%d] with APIC ID %" PRIu32 " exists",
-                   idx, cpu->apic_id);
-        return;
-    }
-
-    /* if 'address' properties socket-id/core-id/thread-id are not set, set them
-     * so that machine_query_hotpluggable_cpus would show correct values
-     */
-    /* 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, &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_ids.pkg_id);
-        return;
-    }
-    cpu->socket_id = topo_ids.pkg_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_ids.die_id);
-        return;
-    }
-    cpu->die_id = topo_ids.die_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_ids.core_id);
-        return;
-    }
-    cpu->core_id = topo_ids.core_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_ids.smt_id);
-        return;
-    }
-    cpu->thread_id = topo_ids.smt_id;
-
-    if (hyperv_feat_enabled(cpu, HYPERV_FEAT_VPINDEX) &&
-        !kvm_hv_vpindex_settable()) {
-        error_setg(errp, "kernel doesn't allow setting HyperV VP_INDEX");
-        return;
-    }
-
-    cs = CPU(cpu);
-    cs->cpu_index = idx;
-
-    numa_cpu_pre_plug(cpu_slot, dev, errp);
-}
-
 static void pc_virtio_md_pci_pre_plug(HotplugHandler *hotplug_dev,
                                       DeviceState *dev, Error **errp)
 {
@@ -1699,7 +1428,7 @@ static void pc_machine_device_pre_plug_cb(HotplugHandler *hotplug_dev,
     if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
         pc_memory_pre_plug(hotplug_dev, dev, errp);
     } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
-        pc_cpu_pre_plug(hotplug_dev, dev, errp);
+        x86_cpu_pre_plug(hotplug_dev, dev, errp);
     } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_PMEM_PCI) ||
                object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MEM_PCI)) {
         pc_virtio_md_pci_pre_plug(hotplug_dev, dev, errp);
@@ -1712,7 +1441,7 @@ static void pc_machine_device_plug_cb(HotplugHandler *hotplug_dev,
     if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
         pc_memory_plug(hotplug_dev, dev, errp);
     } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
-        pc_cpu_plug(hotplug_dev, dev, errp);
+        x86_cpu_plug(hotplug_dev, dev, errp);
     } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_PMEM_PCI) ||
                object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MEM_PCI)) {
         pc_virtio_md_pci_plug(hotplug_dev, dev, errp);
@@ -1725,7 +1454,7 @@ static void pc_machine_device_unplug_request_cb(HotplugHandler *hotplug_dev,
     if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
         pc_memory_unplug_request(hotplug_dev, dev, errp);
     } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
-        pc_cpu_unplug_request_cb(hotplug_dev, dev, errp);
+        x86_cpu_unplug_request_cb(hotplug_dev, dev, errp);
     } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_PMEM_PCI) ||
                object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MEM_PCI)) {
         pc_virtio_md_pci_unplug_request(hotplug_dev, dev, errp);
@@ -1741,7 +1470,7 @@ static void pc_machine_device_unplug_cb(HotplugHandler *hotplug_dev,
     if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
         pc_memory_unplug(hotplug_dev, dev, errp);
     } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
-        pc_cpu_unplug_cb(hotplug_dev, dev, errp);
+        x86_cpu_unplug_cb(hotplug_dev, dev, errp);
     } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_PMEM_PCI) ||
                object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MEM_PCI)) {
         pc_virtio_md_pci_unplug(hotplug_dev, dev, errp);
diff --git a/hw/i386/x86.c b/hw/i386/x86.c
index e2a5005f389c..c2ea989579c9 100644
--- a/hw/i386/x86.c
+++ b/hw/i386/x86.c
@@ -41,6 +41,7 @@
 #include "hw/i386/topology.h"
 #include "hw/i386/fw_cfg.h"
 #include "hw/intc/i8259.h"
+#include "hw/rtc/mc146818rtc.h"
 
 #include "hw/acpi/cpu_hotplug.h"
 #include "hw/irq.h"
@@ -137,6 +138,276 @@ void x86_cpus_init(X86MachineState *x86ms, int default_cpu_version)
     }
 }
 
+void x86_rtc_set_cpus_count(ISADevice *rtc, uint16_t cpus_count)
+{
+    if (cpus_count > 0xff) {
+        /*
+         * If the number of CPUs can't be represented in 8 bits, the
+         * BIOS must use "FW_CFG_NB_CPUS". Set RTC field to 0 just
+         * to make old BIOSes fail more predictably.
+         */
+        rtc_set_memory(rtc, 0x5f, 0);
+    } else {
+        rtc_set_memory(rtc, 0x5f, cpus_count - 1);
+    }
+}
+
+static int x86_apic_cmp(const void *a, const void *b)
+{
+   CPUArchId *apic_a = (CPUArchId *)a;
+   CPUArchId *apic_b = (CPUArchId *)b;
+
+   return apic_a->arch_id - apic_b->arch_id;
+}
+
+/*
+ * returns pointer to CPUArchId descriptor that matches CPU's apic_id
+ * in ms->possible_cpus->cpus, if ms->possible_cpus->cpus has no
+ * entry corresponding to CPU's apic_id returns NULL.
+ */
+CPUArchId *x86_find_cpu_slot(MachineState *ms, uint32_t id, int *idx)
+{
+    CPUArchId apic_id, *found_cpu;
+
+    apic_id.arch_id = id;
+    found_cpu = bsearch(&apic_id, ms->possible_cpus->cpus,
+        ms->possible_cpus->len, sizeof(*ms->possible_cpus->cpus),
+        x86_apic_cmp);
+    if (found_cpu && idx) {
+        *idx = found_cpu - ms->possible_cpus->cpus;
+    }
+    return found_cpu;
+}
+
+void x86_cpu_plug(HotplugHandler *hotplug_dev,
+                  DeviceState *dev, Error **errp)
+{
+    CPUArchId *found_cpu;
+    Error *local_err = NULL;
+    X86CPU *cpu = X86_CPU(dev);
+    X86MachineState *x86ms = X86_MACHINE(hotplug_dev);
+
+    if (x86ms->acpi_dev) {
+        hotplug_handler_plug(x86ms->acpi_dev, dev, &local_err);
+        if (local_err) {
+            goto out;
+        }
+    }
+
+    /* increment the number of CPUs */
+    x86ms->boot_cpus++;
+    if (x86ms->rtc) {
+        x86_rtc_set_cpus_count(x86ms->rtc, x86ms->boot_cpus);
+    }
+    if (x86ms->fw_cfg) {
+        fw_cfg_modify_i16(x86ms->fw_cfg, FW_CFG_NB_CPUS, x86ms->boot_cpus);
+    }
+
+    found_cpu = x86_find_cpu_slot(MACHINE(x86ms), cpu->apic_id, NULL);
+    found_cpu->cpu = OBJECT(dev);
+out:
+    error_propagate(errp, local_err);
+}
+
+void x86_cpu_unplug_request_cb(HotplugHandler *hotplug_dev,
+                               DeviceState *dev, Error **errp)
+{
+    int idx = -1;
+    X86CPU *cpu = X86_CPU(dev);
+    X86MachineState *x86ms = X86_MACHINE(hotplug_dev);
+
+    if (!x86ms->acpi_dev) {
+        error_setg(errp, "CPU hot unplug not supported without ACPI");
+        return;
+    }
+
+    x86_find_cpu_slot(MACHINE(x86ms), cpu->apic_id, &idx);
+    assert(idx != -1);
+    if (idx == 0) {
+        error_setg(errp, "Boot CPU is unpluggable");
+        return;
+    }
+
+    hotplug_handler_unplug_request(x86ms->acpi_dev, dev,
+                                   errp);
+}
+
+void x86_cpu_unplug_cb(HotplugHandler *hotplug_dev,
+                       DeviceState *dev, Error **errp)
+{
+    CPUArchId *found_cpu;
+    Error *local_err = NULL;
+    X86CPU *cpu = X86_CPU(dev);
+    X86MachineState *x86ms = X86_MACHINE(hotplug_dev);
+
+    hotplug_handler_unplug(x86ms->acpi_dev, dev, &local_err);
+    if (local_err) {
+        goto out;
+    }
+
+    found_cpu = x86_find_cpu_slot(MACHINE(x86ms), cpu->apic_id, NULL);
+    found_cpu->cpu = NULL;
+    qdev_unrealize(dev);
+
+    /* decrement the number of CPUs */
+    x86ms->boot_cpus--;
+    /* Update the number of CPUs in CMOS */
+    x86_rtc_set_cpus_count(x86ms->rtc, x86ms->boot_cpus);
+    fw_cfg_modify_i16(x86ms->fw_cfg, FW_CFG_NB_CPUS, x86ms->boot_cpus);
+ out:
+    error_propagate(errp, local_err);
+}
+
+void x86_cpu_pre_plug(HotplugHandler *hotplug_dev,
+                      DeviceState *dev, Error **errp)
+{
+    int idx;
+    CPUState *cs;
+    CPUArchId *cpu_slot;
+    X86CPUTopoIDs topo_ids;
+    X86CPU *cpu = X86_CPU(dev);
+    CPUX86State *env = &cpu->env;
+    MachineState *ms = MACHINE(hotplug_dev);
+    X86MachineState *x86ms = X86_MACHINE(hotplug_dev);
+    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'",
+                   ms->cpu_type);
+        return;
+    }
+
+    init_topo_info(&topo_info, x86ms);
+
+    env->nr_dies = x86ms->smp_dies;
+
+    /*
+     * If APIC ID is not set,
+     * set it based on socket/die/core/thread properties.
+     */
+    if (cpu->apic_id == UNASSIGNED_APIC_ID) {
+        int max_socket = (ms->smp.max_cpus - 1) /
+                                smp_threads / smp_cores / x86ms->smp_dies;
+
+        /*
+         * die-id was optional in QEMU 4.0 and older, so keep it optional
+         * if there's only one die per socket.
+         */
+        if (cpu->die_id < 0 && x86ms->smp_dies == 1) {
+            cpu->die_id = 0;
+        }
+
+        if (cpu->socket_id < 0) {
+            error_setg(errp, "CPU socket-id is not set");
+            return;
+        } else if (cpu->socket_id > max_socket) {
+            error_setg(errp, "Invalid CPU socket-id: %u must be in range 0:%u",
+                       cpu->socket_id, max_socket);
+            return;
+        }
+        if (cpu->die_id < 0) {
+            error_setg(errp, "CPU die-id is not set");
+            return;
+        } else if (cpu->die_id > x86ms->smp_dies - 1) {
+            error_setg(errp, "Invalid CPU die-id: %u must be in range 0:%u",
+                       cpu->die_id, x86ms->smp_dies - 1);
+            return;
+        }
+        if (cpu->core_id < 0) {
+            error_setg(errp, "CPU core-id is not set");
+            return;
+        } else if (cpu->core_id > (smp_cores - 1)) {
+            error_setg(errp, "Invalid CPU core-id: %u must be in range 0:%u",
+                       cpu->core_id, smp_cores - 1);
+            return;
+        }
+        if (cpu->thread_id < 0) {
+            error_setg(errp, "CPU thread-id is not set");
+            return;
+        } else if (cpu->thread_id > (smp_threads - 1)) {
+            error_setg(errp, "Invalid CPU thread-id: %u must be in range 0:%u",
+                       cpu->thread_id, smp_threads - 1);
+            return;
+        }
+
+        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 = x86_find_cpu_slot(MACHINE(x86ms), cpu->apic_id, &idx);
+    if (!cpu_slot) {
+        MachineState *ms = MACHINE(x86ms);
+
+        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_ids.pkg_id, topo_ids.die_id, topo_ids.core_id, topo_ids.smt_id,
+            cpu->apic_id, ms->possible_cpus->len - 1);
+        return;
+    }
+
+    if (cpu_slot->cpu) {
+        error_setg(errp, "CPU[%d] with APIC ID %" PRIu32 " exists",
+                   idx, cpu->apic_id);
+        return;
+    }
+
+    /* if 'address' properties socket-id/core-id/thread-id are not set, set them
+     * so that machine_query_hotpluggable_cpus would show correct values
+     */
+    /* 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, &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_ids.pkg_id);
+        return;
+    }
+    cpu->socket_id = topo_ids.pkg_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_ids.die_id);
+        return;
+    }
+    cpu->die_id = topo_ids.die_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_ids.core_id);
+        return;
+    }
+    cpu->core_id = topo_ids.core_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_ids.smt_id);
+        return;
+    }
+    cpu->thread_id = topo_ids.smt_id;
+
+    if (hyperv_feat_enabled(cpu, HYPERV_FEAT_VPINDEX) &&
+        !kvm_hv_vpindex_settable()) {
+        error_setg(errp, "kernel doesn't allow setting HyperV VP_INDEX");
+        return;
+    }
+
+    cs = CPU(cpu);
+    cs->cpu_index = idx;
+
+    numa_cpu_pre_plug(cpu_slot, dev, errp);
+}
+
 CpuInstanceProperties
 x86_cpu_index_to_props(MachineState *ms, unsigned cpu_index)
 {
