diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 99b843ba2f..9dde61a667 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -4776,8 +4776,14 @@ DEFINE_SPAPR_MACHINE(10, 1);
  */
 static void spapr_machine_10_0_class_options(MachineClass *mc)
 {
+    static GlobalProperty spapr_compat_10_0[] = {
+        { TYPE_POWERPC_CPU, "rtas-stopped-state", "false" },
+    };
+
     spapr_machine_10_1_class_options(mc);
     compat_props_add(mc->compat_props, hw_compat_10_0, hw_compat_10_0_len);
+    compat_props_add(mc->compat_props, spapr_compat_10_0,
+                     G_N_ELEMENTS(spapr_compat_10_0));
 }
 
 DEFINE_SPAPR_MACHINE(10, 0);
diff --git a/target/ppc/cpu.h b/target/ppc/cpu.h
index 787020f6f9..bbd661e96c 100644
--- a/target/ppc/cpu.h
+++ b/target/ppc/cpu.h
@@ -1529,6 +1529,7 @@ struct ArchCPU {
     void *machine_data;
     int32_t node_id; /* NUMA node this CPU belongs to */
     PPCHash64Options *hash64_opts;
+    bool rtas_stopped_state;
 
     /* Those resources are used only during code translation */
     /* opcode handlers */
diff --git a/target/ppc/cpu_init.c b/target/ppc/cpu_init.c
index 86ead740ee..8dac1cd812 100644
--- a/target/ppc/cpu_init.c
+++ b/target/ppc/cpu_init.c
@@ -55,6 +55,11 @@
 /* #define PPC_DEBUG_SPR */
 /* #define USE_APPLE_GDB */
 
+static const Property powerpc_cpu_properties[] = {
+    DEFINE_PROP_BOOL("rtas-stopped-state", PowerPCCPU,
+                      rtas_stopped_state, true),
+};
+
 static inline void vscr_init(CPUPPCState *env, uint32_t val)
 {
     /* Altivec always uses round-to-nearest */
@@ -7529,6 +7534,8 @@ static void ppc_cpu_class_init(ObjectClass *oc, const void *data)
                                       &pcc->parent_unrealize);
     pcc->pvr_match = ppc_pvr_match_default;
 
+    device_class_set_props(dc, powerpc_cpu_properties);
+
     resettable_class_set_parent_phases(rc, NULL, ppc_cpu_reset_hold, NULL,
                                        &pcc->parent_phases);
 
diff --git a/target/ppc/machine.c b/target/ppc/machine.c
index d72e5ecb94..49cfdc6d67 100644
--- a/target/ppc/machine.c
+++ b/target/ppc/machine.c
@@ -257,6 +257,45 @@ static int cpu_post_load(void *opaque, int version_id)
         ppc_store_sdr1(env, env->spr[SPR_SDR1]);
     }
 
+    if (!cpu->rtas_stopped_state) {
+        /*
+         * The source QEMU doesn't have fb802acdc8 and still uses halt +
+         * PM bits in LPCR to implement RTAS stopped state. The new (this)
+         * QEMU will have put the secondary vcpus in stopped state,
+         * waiting for the start-cpu RTAS call. That call will never come
+         * if the source cpus were already running. Try to infer the cpus
+         * state and set env->quiesced accordingly.
+         *
+         * env->quiesced = true  ==> the cpu is waiting to start
+         * env->quiesced = false ==> the cpu is running (unless halted)
+         */
+
+        /*
+         * Halted _could_ mean quiesced, but it could also be cede,
+         * confer_self, power management, etc.
+         */
+        if (CPU(cpu)->halted) {
+            PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu);
+            /*
+             * Both the PSSCR_EC bit and LPCR PM bits set at cpu reset
+             * and rtas_stop and cleared at rtas_start, it's a good
+             * heuristic.
+             */
+            if ((env->spr[SPR_PSSCR] & PSSCR_EC) &&
+                (env->spr[SPR_LPCR] & pcc->lpcr_pm)) {
+                env->quiesced = true;
+            } else {
+                env->quiesced = false;
+            }
+        } else {
+            /*
+             * Old QEMU sets halted during rtas_stop_self. Not halted,
+             * therefore definitely not quiesced.
+             */
+            env->quiesced = false;
+        }
+    }
+
     post_load_update_msr(env);
 
     if (tcg_enabled()) {
@@ -649,6 +688,28 @@ static const VMStateDescription vmstate_reservation = {
     }
 };
 
+static bool rtas_stopped_needed(void *opaque)
+{
+    PowerPCCPU *cpu = opaque;
+
+    return cpu->rtas_stopped_state;
+}
+
+static const VMStateDescription vmstate_rtas_stopped = {
+    .name = "cpu/rtas_stopped",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .needed = rtas_stopped_needed,
+    .fields = (const VMStateField[]) {
+        /*
+         * "RTAS stopped" state, independent of halted state. For QEMU
+         * < 10.0, this is taken from cpu->halted at cpu_post_load()
+         */
+        VMSTATE_BOOL(env.quiesced, PowerPCCPU),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
 #ifdef TARGET_PPC64
 static bool bhrb_needed(void *opaque)
 {
@@ -715,6 +776,7 @@ const VMStateDescription vmstate_ppc_cpu = {
         &vmstate_tlbmas,
         &vmstate_compat,
         &vmstate_reservation,
+        &vmstate_rtas_stopped,
         NULL
     }
 };