diff --git a/MAINTAINERS b/MAINTAINERS
index 50435b8d2f..dc9091c1d7 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1629,6 +1629,7 @@ F: qapi/machine.json
 F: qapi/machine-target.json
 F: include/hw/boards.h
 F: include/hw/core/cpu.h
+F: include/hw/core/smp.h
 F: include/hw/cpu/cluster.h
 F: include/sysemu/numa.h
 T: git https://gitlab.com/ehabkost/qemu.git machine-next
diff --git a/hw/core/machine.c b/hw/core/machine.c
index b8d95eec32..3018230033 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -17,6 +17,7 @@
 #include "qemu/units.h"
 #include "hw/boards.h"
 #include "hw/loader.h"
+#include "hw/core/smp.h"
 #include "qapi/error.h"
 #include "qapi/qapi-visit-common.h"
 #include "qapi/qapi-visit-machine.h"
@@ -749,165 +750,6 @@ void machine_set_cpu_numa_node(MachineState *machine,
     }
 }
 
-/*
- * Report information of a machine's supported CPU topology hierarchy.
- * Topology members will be ordered from the largest to the smallest
- * in the string.
- */
-static char *cpu_hierarchy_to_string(MachineState *ms)
-{
-    MachineClass *mc = MACHINE_GET_CLASS(ms);
-    GString *s = g_string_new(NULL);
-
-    g_string_append_printf(s, "sockets (%u)", ms->smp.sockets);
-
-    if (mc->smp_props.dies_supported) {
-        g_string_append_printf(s, " * dies (%u)", ms->smp.dies);
-    }
-
-    g_string_append_printf(s, " * cores (%u)", ms->smp.cores);
-    g_string_append_printf(s, " * threads (%u)", ms->smp.threads);
-
-    return g_string_free(s, false);
-}
-
-/*
- * smp_parse - Generic function used to parse the given SMP configuration
- *
- * Any missing parameter in "cpus/maxcpus/sockets/cores/threads" will be
- * automatically computed based on the provided ones.
- *
- * In the calculation of omitted sockets/cores/threads: we prefer sockets
- * over cores over threads before 6.2, while preferring cores over sockets
- * over threads since 6.2.
- *
- * In the calculation of cpus/maxcpus: When both maxcpus and cpus are omitted,
- * maxcpus will be computed from the given parameters and cpus will be set
- * equal to maxcpus. When only one of maxcpus and cpus is given then the
- * omitted one will be set to its given counterpart's value. Both maxcpus and
- * cpus may be specified, but maxcpus must be equal to or greater than cpus.
- *
- * For compatibility, apart from the parameters that will be computed, newly
- * introduced topology members which are likely to be target specific should
- * be directly set as 1 if they are omitted (e.g. dies for PC since 4.1).
- */
-static void smp_parse(MachineState *ms, SMPConfiguration *config, Error **errp)
-{
-    MachineClass *mc = MACHINE_GET_CLASS(ms);
-    unsigned cpus    = config->has_cpus ? config->cpus : 0;
-    unsigned sockets = config->has_sockets ? config->sockets : 0;
-    unsigned dies    = config->has_dies ? config->dies : 0;
-    unsigned cores   = config->has_cores ? config->cores : 0;
-    unsigned threads = config->has_threads ? config->threads : 0;
-    unsigned maxcpus = config->has_maxcpus ? config->maxcpus : 0;
-
-    /*
-     * Specified CPU topology parameters must be greater than zero,
-     * explicit configuration like "cpus=0" is not allowed.
-     */
-    if ((config->has_cpus && config->cpus == 0) ||
-        (config->has_sockets && config->sockets == 0) ||
-        (config->has_dies && config->dies == 0) ||
-        (config->has_cores && config->cores == 0) ||
-        (config->has_threads && config->threads == 0) ||
-        (config->has_maxcpus && config->maxcpus == 0)) {
-        warn_report("Deprecated CPU topology (considered invalid): "
-                    "CPU topology parameters must be greater than zero");
-    }
-
-    /*
-     * If not supported by the machine, a topology parameter must be
-     * omitted or specified equal to 1.
-     */
-    if (!mc->smp_props.dies_supported && dies > 1) {
-        error_setg(errp, "dies not supported by this machine's CPU topology");
-        return;
-    }
-
-    dies = dies > 0 ? dies : 1;
-
-    /* compute missing values based on the provided ones */
-    if (cpus == 0 && maxcpus == 0) {
-        sockets = sockets > 0 ? sockets : 1;
-        cores = cores > 0 ? cores : 1;
-        threads = threads > 0 ? threads : 1;
-    } else {
-        maxcpus = maxcpus > 0 ? maxcpus : cpus;
-
-        if (mc->smp_props.prefer_sockets) {
-            /* prefer sockets over cores before 6.2 */
-            if (sockets == 0) {
-                cores = cores > 0 ? cores : 1;
-                threads = threads > 0 ? threads : 1;
-                sockets = maxcpus / (dies * cores * threads);
-            } else if (cores == 0) {
-                threads = threads > 0 ? threads : 1;
-                cores = maxcpus / (sockets * dies * threads);
-            }
-        } else {
-            /* prefer cores over sockets since 6.2 */
-            if (cores == 0) {
-                sockets = sockets > 0 ? sockets : 1;
-                threads = threads > 0 ? threads : 1;
-                cores = maxcpus / (sockets * dies * threads);
-            } else if (sockets == 0) {
-                threads = threads > 0 ? threads : 1;
-                sockets = maxcpus / (dies * cores * threads);
-            }
-        }
-
-        /* try to calculate omitted threads at last */
-        if (threads == 0) {
-            threads = maxcpus / (sockets * dies * cores);
-        }
-    }
-
-    maxcpus = maxcpus > 0 ? maxcpus : sockets * dies * cores * threads;
-    cpus = cpus > 0 ? cpus : maxcpus;
-
-    ms->smp.cpus = cpus;
-    ms->smp.sockets = sockets;
-    ms->smp.dies = dies;
-    ms->smp.cores = cores;
-    ms->smp.threads = threads;
-    ms->smp.max_cpus = maxcpus;
-
-    /* sanity-check of the computed topology */
-    if (sockets * dies * cores * threads != maxcpus) {
-        g_autofree char *topo_msg = cpu_hierarchy_to_string(ms);
-        error_setg(errp, "Invalid CPU topology: "
-                   "product of the hierarchy must match maxcpus: "
-                   "%s != maxcpus (%u)",
-                   topo_msg, maxcpus);
-        return;
-    }
-
-    if (maxcpus < cpus) {
-        g_autofree char *topo_msg = cpu_hierarchy_to_string(ms);
-        error_setg(errp, "Invalid CPU topology: "
-                   "maxcpus must be equal to or greater than smp: "
-                   "%s == maxcpus (%u) < smp_cpus (%u)",
-                   topo_msg, maxcpus, cpus);
-        return;
-    }
-
-    if (ms->smp.cpus < mc->min_cpus) {
-        error_setg(errp, "Invalid SMP CPUs %d. The min CPUs "
-                   "supported by machine '%s' is %d",
-                   ms->smp.cpus,
-                   mc->name, mc->min_cpus);
-        return;
-    }
-
-    if (ms->smp.max_cpus > mc->max_cpus) {
-        error_setg(errp, "Invalid SMP CPUs %d. The max CPUs "
-                   "supported by machine '%s' is %d",
-                   ms->smp.max_cpus,
-                   mc->name, mc->max_cpus);
-        return;
-    }
-}
-
 static void machine_get_smp(Object *obj, Visitor *v, const char *name,
                             void *opaque, Error **errp)
 {
diff --git a/include/hw/core/smp.h b/include/hw/core/smp.h
new file mode 100644
index 0000000000..fe892a5193
--- /dev/null
+++ b/include/hw/core/smp.h
@@ -0,0 +1,185 @@
+/*
+ * QEMU Machine core (related to SMP)
+ *
+ * Copyright (c) 2021 Huawei Technologies Co., Ltd
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License,
+ * or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef MACHINE_CORE_SMP_H
+#define MACHINE_CORE_SMP_H
+
+#include "hw/boards.h"
+#include "qapi/error.h"
+
+/*
+ * Report information of a machine's supported CPU topology hierarchy.
+ * Topology members will be ordered from the largest to the smallest
+ * in the string.
+ */
+static inline char *cpu_hierarchy_to_string(MachineState *ms)
+{
+    MachineClass *mc = MACHINE_GET_CLASS(ms);
+    GString *s = g_string_new(NULL);
+
+    g_string_append_printf(s, "sockets (%u)", ms->smp.sockets);
+
+    if (mc->smp_props.dies_supported) {
+        g_string_append_printf(s, " * dies (%u)", ms->smp.dies);
+    }
+
+    g_string_append_printf(s, " * cores (%u)", ms->smp.cores);
+    g_string_append_printf(s, " * threads (%u)", ms->smp.threads);
+
+    return g_string_free(s, false);
+}
+
+/*
+ * smp_parse - Generic function used to parse the given SMP configuration
+ *
+ * Any missing parameter in "cpus/maxcpus/sockets/cores/threads" will be
+ * automatically computed based on the provided ones.
+ *
+ * In the calculation of omitted sockets/cores/threads: we prefer sockets
+ * over cores over threads before 6.2, while preferring cores over sockets
+ * over threads since 6.2.
+ *
+ * In the calculation of cpus/maxcpus: When both maxcpus and cpus are omitted,
+ * maxcpus will be computed from the given parameters and cpus will be set
+ * equal to maxcpus. When only one of maxcpus and cpus is given then the
+ * omitted one will be set to its given counterpart's value. Both maxcpus and
+ * cpus may be specified, but maxcpus must be equal to or greater than cpus.
+ *
+ * For compatibility, apart from the parameters that will be computed, newly
+ * introduced topology members which are likely to be target specific should
+ * be directly set as 1 if they are omitted (e.g. dies for PC since 4.1).
+ */
+static inline void smp_parse(MachineState *ms, SMPConfiguration *config,
+                             Error **errp)
+{
+    MachineClass *mc = MACHINE_GET_CLASS(ms);
+    unsigned cpus    = config->has_cpus ? config->cpus : 0;
+    unsigned sockets = config->has_sockets ? config->sockets : 0;
+    unsigned dies    = config->has_dies ? config->dies : 0;
+    unsigned cores   = config->has_cores ? config->cores : 0;
+    unsigned threads = config->has_threads ? config->threads : 0;
+    unsigned maxcpus = config->has_maxcpus ? config->maxcpus : 0;
+
+    /*
+     * Specified CPU topology parameters must be greater than zero,
+     * explicit configuration like "cpus=0" is not allowed.
+     */
+    if ((config->has_cpus && config->cpus == 0) ||
+        (config->has_sockets && config->sockets == 0) ||
+        (config->has_dies && config->dies == 0) ||
+        (config->has_cores && config->cores == 0) ||
+        (config->has_threads && config->threads == 0) ||
+        (config->has_maxcpus && config->maxcpus == 0)) {
+        warn_report("Deprecated CPU topology (considered invalid): "
+                    "CPU topology parameters must be greater than zero");
+    }
+
+    /*
+     * If not supported by the machine, a topology parameter must be
+     * omitted or specified equal to 1.
+     */
+    if (!mc->smp_props.dies_supported && dies > 1) {
+        error_setg(errp, "dies not supported by this machine's CPU topology");
+        return;
+    }
+
+    dies = dies > 0 ? dies : 1;
+
+    /* compute missing values based on the provided ones */
+    if (cpus == 0 && maxcpus == 0) {
+        sockets = sockets > 0 ? sockets : 1;
+        cores = cores > 0 ? cores : 1;
+        threads = threads > 0 ? threads : 1;
+    } else {
+        maxcpus = maxcpus > 0 ? maxcpus : cpus;
+
+        if (mc->smp_props.prefer_sockets) {
+            /* prefer sockets over cores before 6.2 */
+            if (sockets == 0) {
+                cores = cores > 0 ? cores : 1;
+                threads = threads > 0 ? threads : 1;
+                sockets = maxcpus / (dies * cores * threads);
+            } else if (cores == 0) {
+                threads = threads > 0 ? threads : 1;
+                cores = maxcpus / (sockets * dies * threads);
+            }
+        } else {
+            /* prefer cores over sockets since 6.2 */
+            if (cores == 0) {
+                sockets = sockets > 0 ? sockets : 1;
+                threads = threads > 0 ? threads : 1;
+                cores = maxcpus / (sockets * dies * threads);
+            } else if (sockets == 0) {
+                threads = threads > 0 ? threads : 1;
+                sockets = maxcpus / (dies * cores * threads);
+            }
+        }
+
+        /* try to calculate omitted threads at last */
+        if (threads == 0) {
+            threads = maxcpus / (sockets * dies * cores);
+        }
+    }
+
+    maxcpus = maxcpus > 0 ? maxcpus : sockets * dies * cores * threads;
+    cpus = cpus > 0 ? cpus : maxcpus;
+
+    ms->smp.cpus = cpus;
+    ms->smp.sockets = sockets;
+    ms->smp.dies = dies;
+    ms->smp.cores = cores;
+    ms->smp.threads = threads;
+    ms->smp.max_cpus = maxcpus;
+
+    /* sanity-check of the computed topology */
+    if (sockets * dies * cores * threads != maxcpus) {
+        g_autofree char *topo_msg = cpu_hierarchy_to_string(ms);
+        error_setg(errp, "Invalid CPU topology: "
+                   "product of the hierarchy must match maxcpus: "
+                   "%s != maxcpus (%u)",
+                   topo_msg, maxcpus);
+        return;
+    }
+
+    if (maxcpus < cpus) {
+        g_autofree char *topo_msg = cpu_hierarchy_to_string(ms);
+        error_setg(errp, "Invalid CPU topology: "
+                   "maxcpus must be equal to or greater than smp: "
+                   "%s == maxcpus (%u) < smp_cpus (%u)",
+                   topo_msg, maxcpus, cpus);
+        return;
+    }
+
+    if (ms->smp.cpus < mc->min_cpus) {
+        error_setg(errp, "Invalid SMP CPUs %d. The min CPUs "
+                   "supported by machine '%s' is %d",
+                   ms->smp.cpus,
+                   mc->name, mc->min_cpus);
+        return;
+    }
+
+    if (ms->smp.max_cpus > mc->max_cpus) {
+        error_setg(errp, "Invalid SMP CPUs %d. The max CPUs "
+                   "supported by machine '%s' is %d",
+                   ms->smp.max_cpus,
+                   mc->name, mc->max_cpus);
+        return;
+    }
+}
+
+#endif
