pc: Remove PcGuestInfo.isapc_ram_fw field

The code can use the PCMachineClass.pci_enabled field directly.
Signed-off-by: NEduardo Habkost <ehabkost@redhat.com>
Reviewed-by: NMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
Reviewed-by: NMarcel Apfelbaum <marcel@redhat.com>

hw/i386/pc.c

@@ -1365,7 +1365,7 @@ void pc_memory_init(PCMachineState *pcms,
     }
 
     /* Initialize PC system firmware */
-    pc_system_firmware_init(rom_memory, guest_info->isapc_ram_fw);
+    pc_system_firmware_init(rom_memory, !pcmc->pci_enabled);
 
     option_rom_mr = g_malloc(sizeof(*option_rom_mr));
     memory_region_init_ram(option_rom_mr, NULL, "pc.rom", PC_ROM_SIZE,

hw/i386/pc_piix.c

@@ -85,7 +85,6 @@ static void pc_init1(MachineState *machine,
     MemoryRegion *ram_memory;
     MemoryRegion *pci_memory;
     MemoryRegion *rom_memory;
-    PcGuestInfo *guest_info;
     ram_addr_t lowmem;
 
     /* Check whether RAM fits below 4G (leaving 1/2 GByte for IO memory).
@@ -141,9 +140,7 @@ static void pc_init1(MachineState *machine,
         rom_memory = system_memory;
     }
 
-    guest_info = pc_guest_info_init(pcms);
-
-    guest_info->isapc_ram_fw = !pcmc->pci_enabled;
+    pc_guest_info_init(pcms);
 
     if (pcmc->smbios_defaults) {
         MachineClass *mc = MACHINE_GET_CLASS(machine);

hw/i386/pc_q35.c

@@ -71,7 +71,6 @@ static void pc_q35_init(MachineState *machine)
     int i;
     ICH9LPCState *ich9_lpc;
     PCIDevice *ahci;
-    PcGuestInfo *guest_info;
     ram_addr_t lowmem;
     DriveInfo *hd[MAX_SATA_PORTS];
     MachineClass *mc = MACHINE_GET_CLASS(machine);
@@ -134,8 +133,7 @@ static void pc_q35_init(MachineState *machine)
         rom_memory = get_system_memory();
     }
 
-    guest_info = pc_guest_info_init(pcms);
-    guest_info->isapc_ram_fw = false;
+    pc_guest_info_init(pcms);
 
     if (pcmc->smbios_defaults) {
         /* These values are guest ABI, do not change */

include/hw/i386/pc.h

@@ -35,7 +35,6 @@
 
 /* Machine info for ACPI build: */
 struct PcGuestInfo {
-    bool isapc_ram_fw;
     unsigned apic_id_limit;
     bool apic_xrupt_override;
     uint64_t numa_nodes;