diff --git a/hw/i386/acpi-build.h b/hw/i386/acpi-build.h
index e57b1aa..148c0f9 100644
--- a/hw/i386/acpi-build.h
+++ b/hw/i386/acpi-build.h
@@ -4,6 +4,6 @@
 
 #include "qemu/typedefs.h"
 
-void acpi_setup(PcGuestInfo *);
+void acpi_setup(void);
 
 #endif
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index 223621a..4480409 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -43,10 +43,6 @@ struct PcGuestInfo {
     uint64_t *node_mem;
     uint64_t *node_cpu;
     FWCfgState *fw_cfg;
-    int legacy_acpi_table_size;
-    bool has_acpi_build;
-    bool has_reserved_memory;
-    bool rsdp_in_ram;
 };
 
 /**
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index 45c07ca..7f574f2 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -2593,6 +2593,7 @@ static
 void acpi_build(AcpiBuildTables *tables)
 {
     PCMachineState *pcms = PC_MACHINE(qdev_get_machine());
+    PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
     PcGuestInfo *guest_info = &pcms->acpi_guest_info;
     GArray *table_offsets;
     unsigned facs, dsdt, rsdt, fadt;
@@ -2706,12 +2707,12 @@ void acpi_build(AcpiBuildTables *tables)
      *
      * All this is for PIIX4, since QEMU 2.0 didn't support Q35 migration.
      */
-    if (guest_info->legacy_acpi_table_size) {
+    if (pcmc->legacy_acpi_table_size) {
         /* Subtracting aml_len gives the size of fixed tables.  Then add the
          * size of the PIIX4 DSDT/SSDT in QEMU 2.0.
          */
         int legacy_aml_len =
-            guest_info->legacy_acpi_table_size +
+            pcmc->legacy_acpi_table_size +
             ACPI_BUILD_LEGACY_CPU_AML_SIZE * max_cpus;
         int legacy_table_size =
             ROUND_UP(tables_blob->len - aml_len + legacy_aml_len,
@@ -2804,6 +2805,7 @@ static const VMStateDescription vmstate_acpi_build = {
 void acpi_setup(void)
 {
     PCMachineState *pcms = PC_MACHINE(qdev_get_machine());
+    PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
     PcGuestInfo *guest_info = &pcms->acpi_guest_info;
     AcpiBuildTables tables;
     AcpiBuildState *build_state;
@@ -2813,7 +2815,7 @@ void acpi_setup(void)
         return;
     }
 
-    if (!guest_info->has_acpi_build) {
+    if (!pcmc->has_acpi_build) {
         ACPI_BUILD_DPRINTF("ACPI build disabled. Bailing out.\n");
         return;
     }
@@ -2842,7 +2844,7 @@ void acpi_setup(void)
     fw_cfg_add_file(guest_info->fw_cfg, ACPI_BUILD_TPMLOG_FILE,
                     tables.tcpalog->data, acpi_data_len(tables.tcpalog));
 
-    if (!guest_info->rsdp_in_ram) {
+    if (!pcmc->rsdp_in_ram) {
         /*
          * Keep for compatibility with old machine types.
          * Though RSDP is small, its contents isn't immutable, so
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 9745dca..3c59500 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -1180,7 +1180,7 @@ void pc_machine_done(Notifier *notifier, void *data)
         }
     }
 
-    acpi_setup(&pcms->acpi_guest_info);
+    acpi_setup();
 }
 
 PcGuestInfo *pc_guest_info_init(PCMachineState *pcms)
@@ -1316,7 +1316,7 @@ void pc_memory_init(PCMachineState *pcms,
         e820_add_entry(0x100000000ULL, pcms->above_4g_mem_size, E820_RAM);
     }
 
-    if (!guest_info->has_reserved_memory &&
+    if (!pcmc->has_reserved_memory &&
         (machine->ram_slots ||
          (machine->maxram_size > machine->ram_size))) {
         MachineClass *mc = MACHINE_GET_CLASS(machine);
@@ -1327,7 +1327,7 @@ void pc_memory_init(PCMachineState *pcms,
     }
 
     /* initialize hotplug memory address space */
-    if (guest_info->has_reserved_memory &&
+    if (pcmc->has_reserved_memory &&
         (machine->ram_size < machine->maxram_size)) {
         ram_addr_t hotplug_mem_size =
             machine->maxram_size - machine->ram_size;
@@ -1382,7 +1382,7 @@ void pc_memory_init(PCMachineState *pcms,
 
     rom_set_fw(fw_cfg);
 
-    if (guest_info->has_reserved_memory && pcms->hotplug_memory.base) {
+    if (pcmc->has_reserved_memory && pcms->hotplug_memory.base) {
         uint64_t *val = g_malloc(sizeof(*val));
         PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
         uint64_t res_mem_end = pcms->hotplug_memory.base;
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 4262c32..584441a 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -143,12 +143,7 @@ static void pc_init1(MachineState *machine,
 
     guest_info = pc_guest_info_init(pcms);
 
-    guest_info->has_acpi_build = pcmc->has_acpi_build;
-    guest_info->legacy_acpi_table_size = pcmc->legacy_acpi_table_size;
-
     guest_info->isapc_ram_fw = !pcmc->pci_enabled;
-    guest_info->has_reserved_memory = pcmc->has_reserved_memory;
-    guest_info->rsdp_in_ram = pcmc->rsdp_in_ram;
 
     if (pcmc->smbios_defaults) {
         MachineClass *mc = MACHINE_GET_CLASS(machine);
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index 0c156e2..45e05f4 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -136,14 +136,6 @@ static void pc_q35_init(MachineState *machine)
 
     guest_info = pc_guest_info_init(pcms);
     guest_info->isapc_ram_fw = false;
-    guest_info->has_acpi_build = pcmc->has_acpi_build;
-    guest_info->has_reserved_memory = pcmc->has_reserved_memory;
-    guest_info->rsdp_in_ram = pcmc->rsdp_in_ram;
-
-    /* Migration was not supported in 2.0 for Q35, so do not bother
-     * with this hack (see hw/i386/acpi-build.c).
-     */
-    guest_info->legacy_acpi_table_size = 0;
 
     if (pcmc->smbios_defaults) {
         /* These values are guest ABI, do not change */
