diff --git a/include/hw/boards.h b/include/hw/boards.h
index 48ff6d8b93f..9a492770cbb 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -732,6 +732,9 @@ struct MachineState {
     } \
     type_init(machine_initfn##_register_types)
 
+extern GlobalProperty hw_compat_9_1[];
+extern const size_t hw_compat_9_1_len;
+
 extern GlobalProperty hw_compat_9_0[];
 extern const size_t hw_compat_9_0_len;
 
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index 4e55d7ef6ea..14ee06287da 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -215,6 +215,9 @@ void pc_system_parse_ovmf_flash(uint8_t *flash_ptr, size_t flash_size);
 /* sgx.c */
 void pc_machine_init_sgx_epc(PCMachineState *pcms);
 
+extern GlobalProperty pc_compat_9_1[];
+extern const size_t pc_compat_9_1_len;
+
 extern GlobalProperty pc_compat_9_0[];
 extern const size_t pc_compat_9_0_len;
 
diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index 687fe0bb8bc..a5d3ad9bf9e 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -3301,10 +3301,17 @@ static void machvirt_machine_init(void)
 }
 type_init(machvirt_machine_init);
 
-static void virt_machine_9_1_options(MachineClass *mc)
+static void virt_machine_9_2_options(MachineClass *mc)
 {
 }
-DEFINE_VIRT_MACHINE_AS_LATEST(9, 1)
+DEFINE_VIRT_MACHINE_AS_LATEST(9, 2)
+
+static void virt_machine_9_1_options(MachineClass *mc)
+{
+    virt_machine_9_2_options(mc);
+    compat_props_add(mc->compat_props, hw_compat_9_1, hw_compat_9_1_len);
+}
+DEFINE_VIRT_MACHINE(9, 1)
 
 static void virt_machine_9_0_options(MachineClass *mc)
 {
diff --git a/hw/core/machine.c b/hw/core/machine.c
index 27dcda02483..adaba17ebac 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -34,6 +34,9 @@
 #include "hw/virtio/virtio-iommu.h"
 #include "audio/audio.h"
 
+GlobalProperty hw_compat_9_1[] = {};
+const size_t hw_compat_9_1_len = G_N_ELEMENTS(hw_compat_9_1);
+
 GlobalProperty hw_compat_9_0[] = {
     {"arm-cpu", "backcompat-cntfrq", "true" },
     { "scsi-hd", "migrate-emulated-scsi-request", "false" },
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index c74931d577a..0cf4cb0d9f2 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -79,6 +79,9 @@
     { "qemu64-" TYPE_X86_CPU, "model-id", "QEMU Virtual CPU version " v, },\
     { "athlon-" TYPE_X86_CPU, "model-id", "QEMU Virtual CPU version " v, },
 
+GlobalProperty pc_compat_9_1[] = {};
+const size_t pc_compat_9_1_len = G_N_ELEMENTS(pc_compat_9_1);
+
 GlobalProperty pc_compat_9_0[] = {
     { TYPE_X86_CPU, "x-amd-topoext-features-only", "false" },
     { TYPE_X86_CPU, "x-l1-cache-per-thread", "false" },
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index d9e69243b4a..746bfe05d38 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -479,13 +479,24 @@ static void pc_i440fx_machine_options(MachineClass *m)
                                      "Use a different south bridge than PIIX3");
 }
 
-static void pc_i440fx_machine_9_1_options(MachineClass *m)
+static void pc_i440fx_machine_9_2_options(MachineClass *m)
 {
     pc_i440fx_machine_options(m);
     m->alias = "pc";
     m->is_default = true;
 }
 
+DEFINE_I440FX_MACHINE(9, 2);
+
+static void pc_i440fx_machine_9_1_options(MachineClass *m)
+{
+    pc_i440fx_machine_9_2_options(m);
+    m->alias = NULL;
+    m->is_default = false;
+    compat_props_add(m->compat_props, hw_compat_9_1, hw_compat_9_1_len);
+    compat_props_add(m->compat_props, pc_compat_9_1, pc_compat_9_1_len);
+}
+
 DEFINE_I440FX_MACHINE(9, 1);
 
 static void pc_i440fx_machine_9_0_options(MachineClass *m)
@@ -493,8 +504,6 @@ static void pc_i440fx_machine_9_0_options(MachineClass *m)
     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
 
     pc_i440fx_machine_9_1_options(m);
-    m->alias = NULL;
-    m->is_default = false;
     m->smbios_memory_device_size = 16 * GiB;
 
     compat_props_add(m->compat_props, hw_compat_9_0, hw_compat_9_0_len);
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index 9d108b194e4..67162ac8863 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -361,19 +361,28 @@ static void pc_q35_machine_options(MachineClass *m)
                      pc_q35_compat_defaults, pc_q35_compat_defaults_len);
 }
 
-static void pc_q35_machine_9_1_options(MachineClass *m)
+static void pc_q35_machine_9_2_options(MachineClass *m)
 {
     pc_q35_machine_options(m);
     m->alias = "q35";
 }
 
+DEFINE_Q35_MACHINE(9, 2);
+
+static void pc_q35_machine_9_1_options(MachineClass *m)
+{
+    pc_q35_machine_9_2_options(m);
+    m->alias = NULL;
+    compat_props_add(m->compat_props, hw_compat_9_1, hw_compat_9_1_len);
+    compat_props_add(m->compat_props, pc_compat_9_1, pc_compat_9_1_len);
+}
+
 DEFINE_Q35_MACHINE(9, 1);
 
 static void pc_q35_machine_9_0_options(MachineClass *m)
 {
     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
     pc_q35_machine_9_1_options(m);
-    m->alias = NULL;
     m->smbios_memory_device_size = 16 * GiB;
     compat_props_add(m->compat_props, hw_compat_9_0, hw_compat_9_0_len);
     compat_props_add(m->compat_props, pc_compat_9_0, pc_compat_9_0_len);
diff --git a/hw/m68k/virt.c b/hw/m68k/virt.c
index cda199af8fa..ea5c4a5a570 100644
--- a/hw/m68k/virt.c
+++ b/hw/m68k/virt.c
@@ -366,10 +366,17 @@ type_init(virt_machine_register_types)
 #define DEFINE_VIRT_MACHINE(major, minor) \
     DEFINE_VIRT_MACHINE_IMPL(false, major, minor)
 
-static void virt_machine_9_1_options(MachineClass *mc)
+static void virt_machine_9_2_options(MachineClass *mc)
 {
 }
-DEFINE_VIRT_MACHINE_AS_LATEST(9, 1)
+DEFINE_VIRT_MACHINE_AS_LATEST(9, 2)
+
+static void virt_machine_9_1_options(MachineClass *mc)
+{
+    virt_machine_9_2_options(mc);
+    compat_props_add(mc->compat_props, hw_compat_9_1, hw_compat_9_1_len);
+}
+DEFINE_VIRT_MACHINE(9, 1)
 
 static void virt_machine_9_0_options(MachineClass *mc)
 {
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 370d7c35d3a..8aa3ce7449b 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -4838,14 +4838,25 @@ static void spapr_machine_latest_class_options(MachineClass *mc)
     DEFINE_SPAPR_MACHINE_IMPL(false, major, minor, _, tag)
 
 /*
- * pseries-9.1
+ * pseries-9.2
  */
-static void spapr_machine_9_1_class_options(MachineClass *mc)
+static void spapr_machine_9_2_class_options(MachineClass *mc)
 {
     /* Defaults for the latest behaviour inherited from the base class */
 }
 
-DEFINE_SPAPR_MACHINE_AS_LATEST(9, 1);
+DEFINE_SPAPR_MACHINE_AS_LATEST(9, 2);
+
+/*
+ * pseries-9.1
+ */
+static void spapr_machine_9_1_class_options(MachineClass *mc)
+{
+    spapr_machine_9_2_class_options(mc);
+    compat_props_add(mc->compat_props, hw_compat_9_1, hw_compat_9_1_len);
+}
+
+DEFINE_SPAPR_MACHINE(9, 1);
 
 /*
  * pseries-9.0
diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
index c483ff8064d..18240a0fd8b 100644
--- a/hw/s390x/s390-virtio-ccw.c
+++ b/hw/s390x/s390-virtio-ccw.c
@@ -871,14 +871,26 @@ static const TypeInfo ccw_machine_info = {
     DEFINE_CCW_MACHINE_IMPL(false, major, minor)
 
 
+static void ccw_machine_9_2_instance_options(MachineState *machine)
+{
+}
+
+static void ccw_machine_9_2_class_options(MachineClass *mc)
+{
+}
+DEFINE_CCW_MACHINE_AS_LATEST(9, 2);
+
 static void ccw_machine_9_1_instance_options(MachineState *machine)
 {
+    ccw_machine_9_2_instance_options(machine);
 }
 
 static void ccw_machine_9_1_class_options(MachineClass *mc)
 {
+    ccw_machine_9_2_class_options(mc);
+    compat_props_add(mc->compat_props, hw_compat_9_1, hw_compat_9_1_len);
 }
-DEFINE_CCW_MACHINE_AS_LATEST(9, 1);
+DEFINE_CCW_MACHINE(9, 1);
 
 static void ccw_machine_9_0_instance_options(MachineState *machine)
 {
