diff --git a/hw/core/machine.c b/hw/core/machine.c
index d776c8cf20..1016ec9e1c 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -741,67 +741,59 @@ void machine_set_cpu_numa_node(MachineState *machine,
 
 static void smp_parse(MachineState *ms, QemuOpts *opts)
 {
-    if (opts) {
-        unsigned cpus    = qemu_opt_get_number(opts, "cpus", 0);
-        unsigned sockets = qemu_opt_get_number(opts, "sockets", 0);
-        unsigned cores   = qemu_opt_get_number(opts, "cores", 0);
-        unsigned threads = qemu_opt_get_number(opts, "threads", 0);
+    unsigned cpus    = qemu_opt_get_number(opts, "cpus", 0);
+    unsigned sockets = qemu_opt_get_number(opts, "sockets", 0);
+    unsigned cores   = qemu_opt_get_number(opts, "cores", 0);
+    unsigned threads = qemu_opt_get_number(opts, "threads", 0);
 
-        /* compute missing values, prefer sockets over cores over threads */
-        if (cpus == 0 || sockets == 0) {
-            cores = cores > 0 ? cores : 1;
-            threads = threads > 0 ? threads : 1;
-            if (cpus == 0) {
-                sockets = sockets > 0 ? sockets : 1;
-                cpus = cores * threads * sockets;
-            } else {
-                ms->smp.max_cpus =
-                        qemu_opt_get_number(opts, "maxcpus", cpus);
-                sockets = ms->smp.max_cpus / (cores * threads);
-            }
-        } else if (cores == 0) {
-            threads = threads > 0 ? threads : 1;
-            cores = cpus / (sockets * threads);
-            cores = cores > 0 ? cores : 1;
-        } else if (threads == 0) {
-            threads = cpus / (cores * sockets);
-            threads = threads > 0 ? threads : 1;
-        } else if (sockets * cores * threads < cpus) {
-            error_report("cpu topology: "
-                         "sockets (%u) * cores (%u) * threads (%u) < "
-                         "smp_cpus (%u)",
-                         sockets, cores, threads, cpus);
-            exit(1);
+    /* compute missing values, prefer sockets over cores over threads */
+    if (cpus == 0 || sockets == 0) {
+        cores = cores > 0 ? cores : 1;
+        threads = threads > 0 ? threads : 1;
+        if (cpus == 0) {
+            sockets = sockets > 0 ? sockets : 1;
+            cpus = cores * threads * sockets;
+        } else {
+            ms->smp.max_cpus =
+                    qemu_opt_get_number(opts, "maxcpus", cpus);
+            sockets = ms->smp.max_cpus / (cores * threads);
         }
-
-        ms->smp.max_cpus =
-                qemu_opt_get_number(opts, "maxcpus", cpus);
-
-        if (ms->smp.max_cpus < cpus) {
-            error_report("maxcpus must be equal to or greater than smp");
-            exit(1);
-        }
-
-        if (sockets * cores * threads != ms->smp.max_cpus) {
-            error_report("Invalid CPU topology: "
-                         "sockets (%u) * cores (%u) * threads (%u) "
-                         "!= maxcpus (%u)",
-                         sockets, cores, threads,
-                         ms->smp.max_cpus);
-            exit(1);
-        }
-
-        ms->smp.cpus = cpus;
-        ms->smp.cores = cores;
-        ms->smp.threads = threads;
-        ms->smp.sockets = sockets;
+    } else if (cores == 0) {
+        threads = threads > 0 ? threads : 1;
+        cores = cpus / (sockets * threads);
+        cores = cores > 0 ? cores : 1;
+    } else if (threads == 0) {
+        threads = cpus / (cores * sockets);
+        threads = threads > 0 ? threads : 1;
+    } else if (sockets * cores * threads < cpus) {
+        error_report("cpu topology: "
+                        "sockets (%u) * cores (%u) * threads (%u) < "
+                        "smp_cpus (%u)",
+                        sockets, cores, threads, cpus);
+        exit(1);
     }
 
-    if (ms->smp.cpus > 1) {
-        Error *blocker = NULL;
-        error_setg(&blocker, QERR_REPLAY_NOT_SUPPORTED, "smp");
-        replay_add_blocker(blocker);
+    ms->smp.max_cpus =
+            qemu_opt_get_number(opts, "maxcpus", cpus);
+
+    if (ms->smp.max_cpus < cpus) {
+        error_report("maxcpus must be equal to or greater than smp");
+        exit(1);
     }
+
+    if (sockets * cores * threads != ms->smp.max_cpus) {
+        error_report("Invalid CPU topology: "
+                        "sockets (%u) * cores (%u) * threads (%u) "
+                        "!= maxcpus (%u)",
+                        sockets, cores, threads,
+                        ms->smp.max_cpus);
+        exit(1);
+    }
+
+    ms->smp.cpus = cpus;
+    ms->smp.cores = cores;
+    ms->smp.threads = threads;
+    ms->smp.sockets = sockets;
 }
 
 static void machine_class_init(ObjectClass *oc, void *data)
@@ -1135,7 +1127,9 @@ bool machine_smp_parse(MachineState *ms, QemuOpts *opts, Error **errp)
 {
     MachineClass *mc = MACHINE_GET_CLASS(ms);
 
-    mc->smp_parse(ms, opts);
+    if (opts) {
+        mc->smp_parse(ms, opts);
+    }
 
     /* sanity-check smp_cpus and max_cpus against mc */
     if (ms->smp.cpus < mc->min_cpus) {
@@ -1151,6 +1145,12 @@ bool machine_smp_parse(MachineState *ms, QemuOpts *opts, Error **errp)
                    mc->name, mc->max_cpus);
         return false;
     }
+
+    if (ms->smp.cpus > 1) {
+        Error *blocker = NULL;
+        error_setg(&blocker, QERR_REPLAY_NOT_SUPPORTED, "smp");
+        replay_add_blocker(blocker);
+    }
     return true;
 }
 
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 92958e9ad7..e206ac85f3 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -712,69 +712,61 @@ void pc_acpi_smi_interrupt(void *opaque, int irq, int level)
  */
 void pc_smp_parse(MachineState *ms, QemuOpts *opts)
 {
-    if (opts) {
-        unsigned cpus    = qemu_opt_get_number(opts, "cpus", 0);
-        unsigned sockets = qemu_opt_get_number(opts, "sockets", 0);
-        unsigned dies = qemu_opt_get_number(opts, "dies", 1);
-        unsigned cores   = qemu_opt_get_number(opts, "cores", 0);
-        unsigned threads = qemu_opt_get_number(opts, "threads", 0);
+    unsigned cpus    = qemu_opt_get_number(opts, "cpus", 0);
+    unsigned sockets = qemu_opt_get_number(opts, "sockets", 0);
+    unsigned dies = qemu_opt_get_number(opts, "dies", 1);
+    unsigned cores   = qemu_opt_get_number(opts, "cores", 0);
+    unsigned threads = qemu_opt_get_number(opts, "threads", 0);
 
-        /* compute missing values, prefer sockets over cores over threads */
-        if (cpus == 0 || sockets == 0) {
-            cores = cores > 0 ? cores : 1;
-            threads = threads > 0 ? threads : 1;
-            if (cpus == 0) {
-                sockets = sockets > 0 ? sockets : 1;
-                cpus = cores * threads * dies * sockets;
-            } else {
-                ms->smp.max_cpus =
-                        qemu_opt_get_number(opts, "maxcpus", cpus);
-                sockets = ms->smp.max_cpus / (cores * threads * dies);
-            }
-        } else if (cores == 0) {
-            threads = threads > 0 ? threads : 1;
-            cores = cpus / (sockets * dies * threads);
-            cores = cores > 0 ? cores : 1;
-        } else if (threads == 0) {
-            threads = cpus / (cores * dies * sockets);
-            threads = threads > 0 ? threads : 1;
-        } else if (sockets * dies * cores * threads < cpus) {
-            error_report("cpu topology: "
-                         "sockets (%u) * dies (%u) * cores (%u) * threads (%u) < "
-                         "smp_cpus (%u)",
-                         sockets, dies, cores, threads, cpus);
-            exit(1);
+    /* compute missing values, prefer sockets over cores over threads */
+    if (cpus == 0 || sockets == 0) {
+        cores = cores > 0 ? cores : 1;
+        threads = threads > 0 ? threads : 1;
+        if (cpus == 0) {
+            sockets = sockets > 0 ? sockets : 1;
+            cpus = cores * threads * dies * sockets;
+        } else {
+            ms->smp.max_cpus =
+                    qemu_opt_get_number(opts, "maxcpus", cpus);
+            sockets = ms->smp.max_cpus / (cores * threads * dies);
         }
-
-        ms->smp.max_cpus =
-                qemu_opt_get_number(opts, "maxcpus", cpus);
-
-        if (ms->smp.max_cpus < cpus) {
-            error_report("maxcpus must be equal to or greater than smp");
-            exit(1);
-        }
-
-        if (sockets * dies * cores * threads != ms->smp.max_cpus) {
-            error_report("Invalid CPU topology deprecated: "
-                         "sockets (%u) * dies (%u) * cores (%u) * threads (%u) "
-                         "!= maxcpus (%u)",
-                         sockets, dies, cores, threads,
-                         ms->smp.max_cpus);
-            exit(1);
-        }
-
-        ms->smp.cpus = cpus;
-        ms->smp.cores = cores;
-        ms->smp.threads = threads;
-        ms->smp.sockets = sockets;
-        ms->smp.dies = dies;
+    } else if (cores == 0) {
+        threads = threads > 0 ? threads : 1;
+        cores = cpus / (sockets * dies * threads);
+        cores = cores > 0 ? cores : 1;
+    } else if (threads == 0) {
+        threads = cpus / (cores * dies * sockets);
+        threads = threads > 0 ? threads : 1;
+    } else if (sockets * dies * cores * threads < cpus) {
+        error_report("cpu topology: "
+                        "sockets (%u) * dies (%u) * cores (%u) * threads (%u) < "
+                        "smp_cpus (%u)",
+                        sockets, dies, cores, threads, cpus);
+        exit(1);
     }
 
-    if (ms->smp.cpus > 1) {
-        Error *blocker = NULL;
-        error_setg(&blocker, QERR_REPLAY_NOT_SUPPORTED, "smp");
-        replay_add_blocker(blocker);
+    ms->smp.max_cpus =
+            qemu_opt_get_number(opts, "maxcpus", cpus);
+
+    if (ms->smp.max_cpus < cpus) {
+        error_report("maxcpus must be equal to or greater than smp");
+        exit(1);
     }
+
+    if (sockets * dies * cores * threads != ms->smp.max_cpus) {
+        error_report("Invalid CPU topology deprecated: "
+                        "sockets (%u) * dies (%u) * cores (%u) * threads (%u) "
+                        "!= maxcpus (%u)",
+                        sockets, dies, cores, threads,
+                        ms->smp.max_cpus);
+        exit(1);
+    }
+
+    ms->smp.cpus = cpus;
+    ms->smp.cores = cores;
+    ms->smp.threads = threads;
+    ms->smp.sockets = sockets;
+    ms->smp.dies = dies;
 }
 
 static