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qemu-patch-raspberry4/hw/i386/pc_q35.c
David Hildenbrand 195784a0cf numa: Auto-enable NUMA when any memory devices are possible 
Let's auto-enable it also when maxmem is specified but no slots are
defined. This will result in us properly creating ACPI srat tables,
indicating the maximum possible PFN to the guest OS. Based on this, e.g.,
Linux will enable the swiotlb properly.

This avoids having to manually force the switolb on (swiotlb=force) in
Linux in case we're booting only using DMA memory (e.g., 2GB on x86-64),
and virtio-mem adds memory later on that really needs the swiotlb to be
used for DMA.

Let's take care of backwards compatibility if somebody has a setup that
specifies "maxram" without "slots".

Reported-by: Alex Shi <alex.shi@linux.alibaba.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Cc: Sergio Lopez <slp@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: qemu-arm@nongnu.org <qemu-arm@nongnu.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20200626072248.78761-22-david@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-07-03 07:57:04 -04:00

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/*
* Q35 chipset based pc system emulator
*
* Copyright (c) 2003-2004 Fabrice Bellard
* Copyright (c) 2009, 2010
* Isaku Yamahata <yamahata at valinux co jp>
* VA Linux Systems Japan K.K.
* Copyright (C) 2012 Jason Baron <jbaron@redhat.com>
*
* This is based on pc.c, but heavily modified.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include "qemu/units.h"
#include "hw/loader.h"
#include "sysemu/arch_init.h"
#include "hw/i2c/smbus_eeprom.h"
#include "hw/rtc/mc146818rtc.h"
#include "hw/xen/xen.h"
#include "sysemu/kvm.h"
#include "sysemu/xen.h"
#include "hw/kvm/clock.h"
#include "hw/pci-host/q35.h"
#include "hw/qdev-properties.h"
#include "exec/address-spaces.h"
#include "hw/i386/x86.h"
#include "hw/i386/pc.h"
#include "hw/i386/ich9.h"
#include "hw/i386/amd_iommu.h"
#include "hw/i386/intel_iommu.h"
#include "hw/display/ramfb.h"
#include "hw/firmware/smbios.h"
#include "hw/ide/pci.h"
#include "hw/ide/ahci.h"
#include "hw/usb.h"
#include "qapi/error.h"
#include "qemu/error-report.h"
#include "sysemu/numa.h"
#include "hw/hyperv/vmbus-bridge.h"
#include "hw/mem/nvdimm.h"
#include "hw/i386/acpi-build.h"
/* ICH9 AHCI has 6 ports */
#define MAX_SATA_PORTS 6
struct ehci_companions {
const char *name;
int func;
int port;
};
static const struct ehci_companions ich9_1d[] = {
{ .name = "ich9-usb-uhci1", .func = 0, .port = 0 },
{ .name = "ich9-usb-uhci2", .func = 1, .port = 2 },
{ .name = "ich9-usb-uhci3", .func = 2, .port = 4 },
};
static const struct ehci_companions ich9_1a[] = {
{ .name = "ich9-usb-uhci4", .func = 0, .port = 0 },
{ .name = "ich9-usb-uhci5", .func = 1, .port = 2 },
{ .name = "ich9-usb-uhci6", .func = 2, .port = 4 },
};
static int ehci_create_ich9_with_companions(PCIBus *bus, int slot)
{
const struct ehci_companions *comp;
PCIDevice *ehci, *uhci;
BusState *usbbus;
const char *name;
int i;
switch (slot) {
case 0x1d:
name = "ich9-usb-ehci1";
comp = ich9_1d;
break;
case 0x1a:
name = "ich9-usb-ehci2";
comp = ich9_1a;
break;
default:
return -1;
}
ehci = pci_new_multifunction(PCI_DEVFN(slot, 7), true, name);
pci_realize_and_unref(ehci, bus, &error_fatal);
usbbus = QLIST_FIRST(&ehci->qdev.child_bus);
for (i = 0; i < 3; i++) {
uhci = pci_new_multifunction(PCI_DEVFN(slot, comp[i].func), true,
comp[i].name);
qdev_prop_set_string(&uhci->qdev, "masterbus", usbbus->name);
qdev_prop_set_uint32(&uhci->qdev, "firstport", comp[i].port);
pci_realize_and_unref(uhci, bus, &error_fatal);
}
return 0;
}
/* PC hardware initialisation */
static void pc_q35_init(MachineState *machine)
{
PCMachineState *pcms = PC_MACHINE(machine);
PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
X86MachineState *x86ms = X86_MACHINE(machine);
Q35PCIHost *q35_host;
PCIHostState *phb;
PCIBus *host_bus;
PCIDevice *lpc;
DeviceState *lpc_dev;
BusState *idebus[MAX_SATA_PORTS];
ISADevice *rtc_state;
MemoryRegion *system_io = get_system_io();
MemoryRegion *pci_memory;
MemoryRegion *rom_memory;
MemoryRegion *ram_memory;
GSIState *gsi_state;
ISABus *isa_bus;
int i;
ICH9LPCState *ich9_lpc;
PCIDevice *ahci;
ram_addr_t lowmem;
DriveInfo *hd[MAX_SATA_PORTS];
MachineClass *mc = MACHINE_GET_CLASS(machine);
/* Check whether RAM fits below 4G (leaving 1/2 GByte for IO memory
* and 256 Mbytes for PCI Express Enhanced Configuration Access Mapping
* also known as MMCFG).
* If it doesn't, we need to split it in chunks below and above 4G.
* In any case, try to make sure that guest addresses aligned at
* 1G boundaries get mapped to host addresses aligned at 1G boundaries.
*/
if (machine->ram_size >= 0xb0000000) {
lowmem = 0x80000000;
} else {
lowmem = 0xb0000000;
}
/* Handle the machine opt max-ram-below-4g. It is basically doing
* min(qemu limit, user limit).
*/
if (!pcms->max_ram_below_4g) {
pcms->max_ram_below_4g = 4 * GiB;
}
if (lowmem > pcms->max_ram_below_4g) {
lowmem = pcms->max_ram_below_4g;
if (machine->ram_size - lowmem > lowmem &&
lowmem & (1 * GiB - 1)) {
warn_report("There is possibly poor performance as the ram size "
" (0x%" PRIx64 ") is more then twice the size of"
" max-ram-below-4g (%"PRIu64") and"
" max-ram-below-4g is not a multiple of 1G.",
(uint64_t)machine->ram_size, pcms->max_ram_below_4g);
}
}
if (machine->ram_size >= lowmem) {
x86ms->above_4g_mem_size = machine->ram_size - lowmem;
x86ms->below_4g_mem_size = lowmem;
} else {
x86ms->above_4g_mem_size = 0;
x86ms->below_4g_mem_size = machine->ram_size;
}
if (xen_enabled()) {
xen_hvm_init(pcms, &ram_memory);
}
x86_cpus_init(x86ms, pcmc->default_cpu_version);
kvmclock_create();
/* pci enabled */
if (pcmc->pci_enabled) {
pci_memory = g_new(MemoryRegion, 1);
memory_region_init(pci_memory, NULL, "pci", UINT64_MAX);
rom_memory = pci_memory;
} else {
pci_memory = NULL;
rom_memory = get_system_memory();
}
pc_guest_info_init(pcms);
if (pcmc->smbios_defaults) {
/* These values are guest ABI, do not change */
smbios_set_defaults("QEMU", "Standard PC (Q35 + ICH9, 2009)",
mc->name, pcmc->smbios_legacy_mode,
pcmc->smbios_uuid_encoded,
SMBIOS_ENTRY_POINT_21);
}
/* allocate ram and load rom/bios */
if (!xen_enabled()) {
pc_memory_init(pcms, get_system_memory(),
rom_memory, &ram_memory);
}
/* create pci host bus */
q35_host = Q35_HOST_DEVICE(qdev_new(TYPE_Q35_HOST_DEVICE));
object_property_add_child(qdev_get_machine(), "q35", OBJECT(q35_host));
object_property_set_link(OBJECT(q35_host), OBJECT(ram_memory),
MCH_HOST_PROP_RAM_MEM, NULL);
object_property_set_link(OBJECT(q35_host), OBJECT(pci_memory),
MCH_HOST_PROP_PCI_MEM, NULL);
object_property_set_link(OBJECT(q35_host), OBJECT(get_system_memory()),
MCH_HOST_PROP_SYSTEM_MEM, NULL);
object_property_set_link(OBJECT(q35_host), OBJECT(system_io),
MCH_HOST_PROP_IO_MEM, NULL);
object_property_set_int(OBJECT(q35_host), x86ms->below_4g_mem_size,
PCI_HOST_BELOW_4G_MEM_SIZE, NULL);
object_property_set_int(OBJECT(q35_host), x86ms->above_4g_mem_size,
PCI_HOST_ABOVE_4G_MEM_SIZE, NULL);
/* pci */
sysbus_realize_and_unref(SYS_BUS_DEVICE(q35_host), &error_fatal);
phb = PCI_HOST_BRIDGE(q35_host);
host_bus = phb->bus;
/* create ISA bus */
lpc = pci_create_simple_multifunction(host_bus, PCI_DEVFN(ICH9_LPC_DEV,
ICH9_LPC_FUNC), true,
TYPE_ICH9_LPC_DEVICE);
object_property_add_link(OBJECT(machine), PC_MACHINE_ACPI_DEVICE_PROP,
TYPE_HOTPLUG_HANDLER,
(Object **)&pcms->acpi_dev,
object_property_allow_set_link,
OBJ_PROP_LINK_STRONG);
object_property_set_link(OBJECT(machine), OBJECT(lpc),
PC_MACHINE_ACPI_DEVICE_PROP, &error_abort);
/* irq lines */
gsi_state = pc_gsi_create(&x86ms->gsi, pcmc->pci_enabled);
ich9_lpc = ICH9_LPC_DEVICE(lpc);
lpc_dev = DEVICE(lpc);
for (i = 0; i < GSI_NUM_PINS; i++) {
qdev_connect_gpio_out_named(lpc_dev, ICH9_GPIO_GSI, i, x86ms->gsi[i]);
}
pci_bus_irqs(host_bus, ich9_lpc_set_irq, ich9_lpc_map_irq, ich9_lpc,
ICH9_LPC_NB_PIRQS);
pci_bus_set_route_irq_fn(host_bus, ich9_route_intx_pin_to_irq);
isa_bus = ich9_lpc->isa_bus;
pc_i8259_create(isa_bus, gsi_state->i8259_irq);
if (pcmc->pci_enabled) {
ioapic_init_gsi(gsi_state, "q35");
}
if (tcg_enabled()) {
x86_register_ferr_irq(x86ms->gsi[13]);
}
assert(pcms->vmport != ON_OFF_AUTO__MAX);
if (pcms->vmport == ON_OFF_AUTO_AUTO) {
pcms->vmport = xen_enabled() ? ON_OFF_AUTO_OFF : ON_OFF_AUTO_ON;
}
/* init basic PC hardware */
pc_basic_device_init(isa_bus, x86ms->gsi, &rtc_state, !mc->no_floppy,
(pcms->vmport != ON_OFF_AUTO_ON), pcms->pit_enabled,
0xff0104);
/* connect pm stuff to lpc */
ich9_lpc_pm_init(lpc, x86_machine_is_smm_enabled(x86ms));
if (pcms->sata_enabled) {
/* ahci and SATA device, for q35 1 ahci controller is built-in */
ahci = pci_create_simple_multifunction(host_bus,
PCI_DEVFN(ICH9_SATA1_DEV,
ICH9_SATA1_FUNC),
true, "ich9-ahci");
idebus[0] = qdev_get_child_bus(&ahci->qdev, "ide.0");
idebus[1] = qdev_get_child_bus(&ahci->qdev, "ide.1");
g_assert(MAX_SATA_PORTS == ahci_get_num_ports(ahci));
ide_drive_get(hd, ahci_get_num_ports(ahci));
ahci_ide_create_devs(ahci, hd);
} else {
idebus[0] = idebus[1] = NULL;
}
if (machine_usb(machine)) {
/* Should we create 6 UHCI according to ich9 spec? */
ehci_create_ich9_with_companions(host_bus, 0x1d);
}
if (pcms->smbus_enabled) {
/* TODO: Populate SPD eeprom data. */
pcms->smbus = ich9_smb_init(host_bus,
PCI_DEVFN(ICH9_SMB_DEV, ICH9_SMB_FUNC),
0xb100);
smbus_eeprom_init(pcms->smbus, 8, NULL, 0);
}
pc_cmos_init(pcms, idebus[0], idebus[1], rtc_state);
/* the rest devices to which pci devfn is automatically assigned */
pc_vga_init(isa_bus, host_bus);
pc_nic_init(pcmc, isa_bus, host_bus);
if (machine->nvdimms_state->is_enabled) {
nvdimm_init_acpi_state(machine->nvdimms_state, system_io,
x86_nvdimm_acpi_dsmio,
x86ms->fw_cfg, OBJECT(pcms));
}
}
#define DEFINE_Q35_MACHINE(suffix, name, compatfn, optionfn) \
static void pc_init_##suffix(MachineState *machine) \
{ \
void (*compat)(MachineState *m) = (compatfn); \
if (compat) { \
compat(machine); \
} \
pc_q35_init(machine); \
} \
DEFINE_PC_MACHINE(suffix, name, pc_init_##suffix, optionfn)
static void pc_q35_machine_options(MachineClass *m)
{
PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
pcmc->default_nic_model = "e1000e";
m->family = "pc_q35";
m->desc = "Standard PC (Q35 + ICH9, 2009)";
m->units_per_default_bus = 1;
m->default_machine_opts = "firmware=bios-256k.bin";
m->default_display = "std";
m->default_kernel_irqchip_split = false;
m->no_floppy = 1;
machine_class_allow_dynamic_sysbus_dev(m, TYPE_AMD_IOMMU_DEVICE);
machine_class_allow_dynamic_sysbus_dev(m, TYPE_INTEL_IOMMU_DEVICE);
machine_class_allow_dynamic_sysbus_dev(m, TYPE_RAMFB_DEVICE);
machine_class_allow_dynamic_sysbus_dev(m, TYPE_VMBUS_BRIDGE);
m->max_cpus = 288;
}
static void pc_q35_5_1_machine_options(MachineClass *m)
{
PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
pc_q35_machine_options(m);
m->alias = "q35";
pcmc->default_cpu_version = 1;
}
DEFINE_Q35_MACHINE(v5_1, "pc-q35-5.1", NULL,
pc_q35_5_1_machine_options);
static void pc_q35_5_0_machine_options(MachineClass *m)
{
pc_q35_5_1_machine_options(m);
m->alias = NULL;
m->numa_mem_supported = true;
compat_props_add(m->compat_props, hw_compat_5_0, hw_compat_5_0_len);
compat_props_add(m->compat_props, pc_compat_5_0, pc_compat_5_0_len);
m->auto_enable_numa_with_memhp = false;
}
DEFINE_Q35_MACHINE(v5_0, "pc-q35-5.0", NULL,
pc_q35_5_0_machine_options);
static void pc_q35_4_2_machine_options(MachineClass *m)
{
pc_q35_5_0_machine_options(m);
m->alias = NULL;
compat_props_add(m->compat_props, hw_compat_4_2, hw_compat_4_2_len);
compat_props_add(m->compat_props, pc_compat_4_2, pc_compat_4_2_len);
}
DEFINE_Q35_MACHINE(v4_2, "pc-q35-4.2", NULL,
pc_q35_4_2_machine_options);
static void pc_q35_4_1_machine_options(MachineClass *m)
{
pc_q35_4_2_machine_options(m);
m->alias = NULL;
compat_props_add(m->compat_props, hw_compat_4_1, hw_compat_4_1_len);
compat_props_add(m->compat_props, pc_compat_4_1, pc_compat_4_1_len);
}
DEFINE_Q35_MACHINE(v4_1, "pc-q35-4.1", NULL,
pc_q35_4_1_machine_options);
static void pc_q35_4_0_1_machine_options(MachineClass *m)
{
PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
pc_q35_4_1_machine_options(m);
m->alias = NULL;
pcmc->default_cpu_version = CPU_VERSION_LEGACY;
/*
* This is the default machine for the 4.0-stable branch. It is basically
* a 4.0 that doesn't use split irqchip by default. It MUST hence apply the
* 4.0 compat props.
*/
compat_props_add(m->compat_props, hw_compat_4_0, hw_compat_4_0_len);
compat_props_add(m->compat_props, pc_compat_4_0, pc_compat_4_0_len);
}
DEFINE_Q35_MACHINE(v4_0_1, "pc-q35-4.0.1", NULL,
pc_q35_4_0_1_machine_options);
static void pc_q35_4_0_machine_options(MachineClass *m)
{
pc_q35_4_0_1_machine_options(m);
m->default_kernel_irqchip_split = true;
m->alias = NULL;
/* Compat props are applied by the 4.0.1 machine */
}
DEFINE_Q35_MACHINE(v4_0, "pc-q35-4.0", NULL,
pc_q35_4_0_machine_options);
static void pc_q35_3_1_machine_options(MachineClass *m)
{
PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
pc_q35_4_0_machine_options(m);
m->default_kernel_irqchip_split = false;
pcmc->do_not_add_smb_acpi = true;
m->smbus_no_migration_support = true;
m->alias = NULL;
pcmc->pvh_enabled = false;
compat_props_add(m->compat_props, hw_compat_3_1, hw_compat_3_1_len);
compat_props_add(m->compat_props, pc_compat_3_1, pc_compat_3_1_len);
}
DEFINE_Q35_MACHINE(v3_1, "pc-q35-3.1", NULL,
pc_q35_3_1_machine_options);
static void pc_q35_3_0_machine_options(MachineClass *m)
{
pc_q35_3_1_machine_options(m);
compat_props_add(m->compat_props, hw_compat_3_0, hw_compat_3_0_len);
compat_props_add(m->compat_props, pc_compat_3_0, pc_compat_3_0_len);
}
DEFINE_Q35_MACHINE(v3_0, "pc-q35-3.0", NULL,
pc_q35_3_0_machine_options);
static void pc_q35_2_12_machine_options(MachineClass *m)
{
pc_q35_3_0_machine_options(m);
compat_props_add(m->compat_props, hw_compat_2_12, hw_compat_2_12_len);
compat_props_add(m->compat_props, pc_compat_2_12, pc_compat_2_12_len);
}
DEFINE_Q35_MACHINE(v2_12, "pc-q35-2.12", NULL,
pc_q35_2_12_machine_options);
static void pc_q35_2_11_machine_options(MachineClass *m)
{
PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
pc_q35_2_12_machine_options(m);
pcmc->default_nic_model = "e1000";
compat_props_add(m->compat_props, hw_compat_2_11, hw_compat_2_11_len);
compat_props_add(m->compat_props, pc_compat_2_11, pc_compat_2_11_len);
}
DEFINE_Q35_MACHINE(v2_11, "pc-q35-2.11", NULL,
pc_q35_2_11_machine_options);
static void pc_q35_2_10_machine_options(MachineClass *m)
{
pc_q35_2_11_machine_options(m);
compat_props_add(m->compat_props, hw_compat_2_10, hw_compat_2_10_len);
compat_props_add(m->compat_props, pc_compat_2_10, pc_compat_2_10_len);
m->numa_auto_assign_ram = numa_legacy_auto_assign_ram;
m->auto_enable_numa_with_memhp = false;
}
DEFINE_Q35_MACHINE(v2_10, "pc-q35-2.10", NULL,
pc_q35_2_10_machine_options);
static void pc_q35_2_9_machine_options(MachineClass *m)
{
pc_q35_2_10_machine_options(m);
compat_props_add(m->compat_props, hw_compat_2_9, hw_compat_2_9_len);
compat_props_add(m->compat_props, pc_compat_2_9, pc_compat_2_9_len);
}
DEFINE_Q35_MACHINE(v2_9, "pc-q35-2.9", NULL,
pc_q35_2_9_machine_options);
static void pc_q35_2_8_machine_options(MachineClass *m)
{
pc_q35_2_9_machine_options(m);
compat_props_add(m->compat_props, hw_compat_2_8, hw_compat_2_8_len);
compat_props_add(m->compat_props, pc_compat_2_8, pc_compat_2_8_len);
}
DEFINE_Q35_MACHINE(v2_8, "pc-q35-2.8", NULL,
pc_q35_2_8_machine_options);
static void pc_q35_2_7_machine_options(MachineClass *m)
{
pc_q35_2_8_machine_options(m);
m->max_cpus = 255;
compat_props_add(m->compat_props, hw_compat_2_7, hw_compat_2_7_len);
compat_props_add(m->compat_props, pc_compat_2_7, pc_compat_2_7_len);
}
DEFINE_Q35_MACHINE(v2_7, "pc-q35-2.7", NULL,
pc_q35_2_7_machine_options);
static void pc_q35_2_6_machine_options(MachineClass *m)
{
PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
pc_q35_2_7_machine_options(m);
pcmc->legacy_cpu_hotplug = true;
pcmc->linuxboot_dma_enabled = false;
compat_props_add(m->compat_props, hw_compat_2_6, hw_compat_2_6_len);
compat_props_add(m->compat_props, pc_compat_2_6, pc_compat_2_6_len);
}
DEFINE_Q35_MACHINE(v2_6, "pc-q35-2.6", NULL,
pc_q35_2_6_machine_options);
static void pc_q35_2_5_machine_options(MachineClass *m)
{
X86MachineClass *x86mc = X86_MACHINE_CLASS(m);
pc_q35_2_6_machine_options(m);
x86mc->save_tsc_khz = false;
m->legacy_fw_cfg_order = 1;
compat_props_add(m->compat_props, hw_compat_2_5, hw_compat_2_5_len);
compat_props_add(m->compat_props, pc_compat_2_5, pc_compat_2_5_len);
}
DEFINE_Q35_MACHINE(v2_5, "pc-q35-2.5", NULL,
pc_q35_2_5_machine_options);
static void pc_q35_2_4_machine_options(MachineClass *m)
{
PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
pc_q35_2_5_machine_options(m);
m->hw_version = "2.4.0";
pcmc->broken_reserved_end = true;
compat_props_add(m->compat_props, hw_compat_2_4, hw_compat_2_4_len);
compat_props_add(m->compat_props, pc_compat_2_4, pc_compat_2_4_len);
}
DEFINE_Q35_MACHINE(v2_4, "pc-q35-2.4", NULL,
pc_q35_2_4_machine_options);
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