qemu/hw/i386/pc_q35.c
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   1/*
   2 * Q35 chipset based pc system emulator
   3 *
   4 * Copyright (c) 2003-2004 Fabrice Bellard
   5 * Copyright (c) 2009, 2010
   6 *               Isaku Yamahata <yamahata at valinux co jp>
   7 *               VA Linux Systems Japan K.K.
   8 * Copyright (C) 2012 Jason Baron <jbaron@redhat.com>
   9 *
  10 * This is based on pc.c, but heavily modified.
  11 *
  12 * Permission is hereby granted, free of charge, to any person obtaining a copy
  13 * of this software and associated documentation files (the "Software"), to deal
  14 * in the Software without restriction, including without limitation the rights
  15 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  16 * copies of the Software, and to permit persons to whom the Software is
  17 * furnished to do so, subject to the following conditions:
  18 *
  19 * The above copyright notice and this permission notice shall be included in
  20 * all copies or substantial portions of the Software.
  21 *
  22 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  23 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  24 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  25 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  26 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  27 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  28 * THE SOFTWARE.
  29 */
  30
  31#include "qemu/osdep.h"
  32#include "qemu/units.h"
  33#include "hw/loader.h"
  34#include "sysemu/arch_init.h"
  35#include "hw/i2c/smbus_eeprom.h"
  36#include "hw/rtc/mc146818rtc.h"
  37#include "hw/xen/xen.h"
  38#include "sysemu/kvm.h"
  39#include "sysemu/xen.h"
  40#include "hw/kvm/clock.h"
  41#include "hw/pci-host/q35.h"
  42#include "hw/qdev-properties.h"
  43#include "exec/address-spaces.h"
  44#include "hw/i386/x86.h"
  45#include "hw/i386/pc.h"
  46#include "hw/i386/ich9.h"
  47#include "hw/i386/amd_iommu.h"
  48#include "hw/i386/intel_iommu.h"
  49#include "hw/display/ramfb.h"
  50#include "hw/firmware/smbios.h"
  51#include "hw/ide/pci.h"
  52#include "hw/ide/ahci.h"
  53#include "hw/usb.h"
  54#include "qapi/error.h"
  55#include "qemu/error-report.h"
  56#include "sysemu/numa.h"
  57#include "hw/hyperv/vmbus-bridge.h"
  58#include "hw/mem/nvdimm.h"
  59#include "hw/i386/acpi-build.h"
  60
  61/* ICH9 AHCI has 6 ports */
  62#define MAX_SATA_PORTS     6
  63
  64struct ehci_companions {
  65    const char *name;
  66    int func;
  67    int port;
  68};
  69
  70static const struct ehci_companions ich9_1d[] = {
  71    { .name = "ich9-usb-uhci1", .func = 0, .port = 0 },
  72    { .name = "ich9-usb-uhci2", .func = 1, .port = 2 },
  73    { .name = "ich9-usb-uhci3", .func = 2, .port = 4 },
  74};
  75
  76static const struct ehci_companions ich9_1a[] = {
  77    { .name = "ich9-usb-uhci4", .func = 0, .port = 0 },
  78    { .name = "ich9-usb-uhci5", .func = 1, .port = 2 },
  79    { .name = "ich9-usb-uhci6", .func = 2, .port = 4 },
  80};
  81
  82static int ehci_create_ich9_with_companions(PCIBus *bus, int slot)
  83{
  84    const struct ehci_companions *comp;
  85    PCIDevice *ehci, *uhci;
  86    BusState *usbbus;
  87    const char *name;
  88    int i;
  89
  90    switch (slot) {
  91    case 0x1d:
  92        name = "ich9-usb-ehci1";
  93        comp = ich9_1d;
  94        break;
  95    case 0x1a:
  96        name = "ich9-usb-ehci2";
  97        comp = ich9_1a;
  98        break;
  99    default:
 100        return -1;
 101    }
 102
 103    ehci = pci_new_multifunction(PCI_DEVFN(slot, 7), true, name);
 104    pci_realize_and_unref(ehci, bus, &error_fatal);
 105    usbbus = QLIST_FIRST(&ehci->qdev.child_bus);
 106
 107    for (i = 0; i < 3; i++) {
 108        uhci = pci_new_multifunction(PCI_DEVFN(slot, comp[i].func), true,
 109                                     comp[i].name);
 110        qdev_prop_set_string(&uhci->qdev, "masterbus", usbbus->name);
 111        qdev_prop_set_uint32(&uhci->qdev, "firstport", comp[i].port);
 112        pci_realize_and_unref(uhci, bus, &error_fatal);
 113    }
 114    return 0;
 115}
 116
 117/* PC hardware initialisation */
 118static void pc_q35_init(MachineState *machine)
 119{
 120    PCMachineState *pcms = PC_MACHINE(machine);
 121    PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
 122    X86MachineState *x86ms = X86_MACHINE(machine);
 123    Q35PCIHost *q35_host;
 124    PCIHostState *phb;
 125    PCIBus *host_bus;
 126    PCIDevice *lpc;
 127    DeviceState *lpc_dev;
 128    BusState *idebus[MAX_SATA_PORTS];
 129    ISADevice *rtc_state;
 130    MemoryRegion *system_io = get_system_io();
 131    MemoryRegion *pci_memory;
 132    MemoryRegion *rom_memory;
 133    MemoryRegion *ram_memory;
 134    GSIState *gsi_state;
 135    ISABus *isa_bus;
 136    int i;
 137    ICH9LPCState *ich9_lpc;
 138    PCIDevice *ahci;
 139    ram_addr_t lowmem;
 140    DriveInfo *hd[MAX_SATA_PORTS];
 141    MachineClass *mc = MACHINE_GET_CLASS(machine);
 142
 143    /* Check whether RAM fits below 4G (leaving 1/2 GByte for IO memory
 144     * and 256 Mbytes for PCI Express Enhanced Configuration Access Mapping
 145     * also known as MMCFG).
 146     * If it doesn't, we need to split it in chunks below and above 4G.
 147     * In any case, try to make sure that guest addresses aligned at
 148     * 1G boundaries get mapped to host addresses aligned at 1G boundaries.
 149     */
 150    if (machine->ram_size >= 0xb0000000) {
 151        lowmem = 0x80000000;
 152    } else {
 153        lowmem = 0xb0000000;
 154    }
 155
 156    /* Handle the machine opt max-ram-below-4g.  It is basically doing
 157     * min(qemu limit, user limit).
 158     */
 159    if (!pcms->max_ram_below_4g) {
 160        pcms->max_ram_below_4g = 4 * GiB;
 161    }
 162    if (lowmem > pcms->max_ram_below_4g) {
 163        lowmem = pcms->max_ram_below_4g;
 164        if (machine->ram_size - lowmem > lowmem &&
 165            lowmem & (1 * GiB - 1)) {
 166            warn_report("There is possibly poor performance as the ram size "
 167                        " (0x%" PRIx64 ") is more then twice the size of"
 168                        " max-ram-below-4g (%"PRIu64") and"
 169                        " max-ram-below-4g is not a multiple of 1G.",
 170                        (uint64_t)machine->ram_size, pcms->max_ram_below_4g);
 171        }
 172    }
 173
 174    if (machine->ram_size >= lowmem) {
 175        x86ms->above_4g_mem_size = machine->ram_size - lowmem;
 176        x86ms->below_4g_mem_size = lowmem;
 177    } else {
 178        x86ms->above_4g_mem_size = 0;
 179        x86ms->below_4g_mem_size = machine->ram_size;
 180    }
 181
 182    if (xen_enabled()) {
 183        xen_hvm_init(pcms, &ram_memory);
 184    }
 185
 186    x86_cpus_init(x86ms, pcmc->default_cpu_version);
 187
 188    kvmclock_create();
 189
 190    /* pci enabled */
 191    if (pcmc->pci_enabled) {
 192        pci_memory = g_new(MemoryRegion, 1);
 193        memory_region_init(pci_memory, NULL, "pci", UINT64_MAX);
 194        rom_memory = pci_memory;
 195    } else {
 196        pci_memory = NULL;
 197        rom_memory = get_system_memory();
 198    }
 199
 200    pc_guest_info_init(pcms);
 201
 202    if (pcmc->smbios_defaults) {
 203        /* These values are guest ABI, do not change */
 204        smbios_set_defaults("QEMU", "Standard PC (Q35 + ICH9, 2009)",
 205                            mc->name, pcmc->smbios_legacy_mode,
 206                            pcmc->smbios_uuid_encoded,
 207                            SMBIOS_ENTRY_POINT_21);
 208    }
 209
 210    /* allocate ram and load rom/bios */
 211    if (!xen_enabled()) {
 212        pc_memory_init(pcms, get_system_memory(),
 213                       rom_memory, &ram_memory);
 214    }
 215
 216    /* create pci host bus */
 217    q35_host = Q35_HOST_DEVICE(qdev_new(TYPE_Q35_HOST_DEVICE));
 218
 219    object_property_add_child(qdev_get_machine(), "q35", OBJECT(q35_host));
 220    object_property_set_link(OBJECT(q35_host), MCH_HOST_PROP_RAM_MEM,
 221                             OBJECT(ram_memory), NULL);
 222    object_property_set_link(OBJECT(q35_host), MCH_HOST_PROP_PCI_MEM,
 223                             OBJECT(pci_memory), NULL);
 224    object_property_set_link(OBJECT(q35_host), MCH_HOST_PROP_SYSTEM_MEM,
 225                             OBJECT(get_system_memory()), NULL);
 226    object_property_set_link(OBJECT(q35_host), MCH_HOST_PROP_IO_MEM,
 227                             OBJECT(system_io), NULL);
 228    object_property_set_int(OBJECT(q35_host), PCI_HOST_BELOW_4G_MEM_SIZE,
 229                            x86ms->below_4g_mem_size, NULL);
 230    object_property_set_int(OBJECT(q35_host), PCI_HOST_ABOVE_4G_MEM_SIZE,
 231                            x86ms->above_4g_mem_size, NULL);
 232    /* pci */
 233    sysbus_realize_and_unref(SYS_BUS_DEVICE(q35_host), &error_fatal);
 234    phb = PCI_HOST_BRIDGE(q35_host);
 235    host_bus = phb->bus;
 236    /* create ISA bus */
 237    lpc = pci_create_simple_multifunction(host_bus, PCI_DEVFN(ICH9_LPC_DEV,
 238                                          ICH9_LPC_FUNC), true,
 239                                          TYPE_ICH9_LPC_DEVICE);
 240
 241    object_property_add_link(OBJECT(machine), PC_MACHINE_ACPI_DEVICE_PROP,
 242                             TYPE_HOTPLUG_HANDLER,
 243                             (Object **)&pcms->acpi_dev,
 244                             object_property_allow_set_link,
 245                             OBJ_PROP_LINK_STRONG);
 246    object_property_set_link(OBJECT(machine), PC_MACHINE_ACPI_DEVICE_PROP,
 247                             OBJECT(lpc), &error_abort);
 248
 249    /* irq lines */
 250    gsi_state = pc_gsi_create(&x86ms->gsi, pcmc->pci_enabled);
 251
 252    ich9_lpc = ICH9_LPC_DEVICE(lpc);
 253    lpc_dev = DEVICE(lpc);
 254    for (i = 0; i < GSI_NUM_PINS; i++) {
 255        qdev_connect_gpio_out_named(lpc_dev, ICH9_GPIO_GSI, i, x86ms->gsi[i]);
 256    }
 257    pci_bus_irqs(host_bus, ich9_lpc_set_irq, ich9_lpc_map_irq, ich9_lpc,
 258                 ICH9_LPC_NB_PIRQS);
 259    pci_bus_set_route_irq_fn(host_bus, ich9_route_intx_pin_to_irq);
 260    isa_bus = ich9_lpc->isa_bus;
 261
 262    pc_i8259_create(isa_bus, gsi_state->i8259_irq);
 263
 264    if (pcmc->pci_enabled) {
 265        ioapic_init_gsi(gsi_state, "q35");
 266    }
 267
 268    if (tcg_enabled()) {
 269        x86_register_ferr_irq(x86ms->gsi[13]);
 270    }
 271
 272    assert(pcms->vmport != ON_OFF_AUTO__MAX);
 273    if (pcms->vmport == ON_OFF_AUTO_AUTO) {
 274        pcms->vmport = xen_enabled() ? ON_OFF_AUTO_OFF : ON_OFF_AUTO_ON;
 275    }
 276
 277    /* init basic PC hardware */
 278    pc_basic_device_init(pcms, isa_bus, x86ms->gsi, &rtc_state, !mc->no_floppy,
 279                         0xff0104);
 280
 281    /* connect pm stuff to lpc */
 282    ich9_lpc_pm_init(lpc, x86_machine_is_smm_enabled(x86ms));
 283
 284    if (pcms->sata_enabled) {
 285        /* ahci and SATA device, for q35 1 ahci controller is built-in */
 286        ahci = pci_create_simple_multifunction(host_bus,
 287                                               PCI_DEVFN(ICH9_SATA1_DEV,
 288                                                         ICH9_SATA1_FUNC),
 289                                               true, "ich9-ahci");
 290        idebus[0] = qdev_get_child_bus(&ahci->qdev, "ide.0");
 291        idebus[1] = qdev_get_child_bus(&ahci->qdev, "ide.1");
 292        g_assert(MAX_SATA_PORTS == ahci_get_num_ports(ahci));
 293        ide_drive_get(hd, ahci_get_num_ports(ahci));
 294        ahci_ide_create_devs(ahci, hd);
 295    } else {
 296        idebus[0] = idebus[1] = NULL;
 297    }
 298
 299    if (machine_usb(machine)) {
 300        /* Should we create 6 UHCI according to ich9 spec? */
 301        ehci_create_ich9_with_companions(host_bus, 0x1d);
 302    }
 303
 304    if (pcms->smbus_enabled) {
 305        /* TODO: Populate SPD eeprom data.  */
 306        pcms->smbus = ich9_smb_init(host_bus,
 307                                    PCI_DEVFN(ICH9_SMB_DEV, ICH9_SMB_FUNC),
 308                                    0xb100);
 309        smbus_eeprom_init(pcms->smbus, 8, NULL, 0);
 310    }
 311
 312    pc_cmos_init(pcms, idebus[0], idebus[1], rtc_state);
 313
 314    /* the rest devices to which pci devfn is automatically assigned */
 315    pc_vga_init(isa_bus, host_bus);
 316    pc_nic_init(pcmc, isa_bus, host_bus);
 317
 318    if (machine->nvdimms_state->is_enabled) {
 319        nvdimm_init_acpi_state(machine->nvdimms_state, system_io,
 320                               x86_nvdimm_acpi_dsmio,
 321                               x86ms->fw_cfg, OBJECT(pcms));
 322    }
 323}
 324
 325#define DEFINE_Q35_MACHINE(suffix, name, compatfn, optionfn) \
 326    static void pc_init_##suffix(MachineState *machine) \
 327    { \
 328        void (*compat)(MachineState *m) = (compatfn); \
 329        if (compat) { \
 330            compat(machine); \
 331        } \
 332        pc_q35_init(machine); \
 333    } \
 334    DEFINE_PC_MACHINE(suffix, name, pc_init_##suffix, optionfn)
 335
 336
 337static void pc_q35_machine_options(MachineClass *m)
 338{
 339    PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
 340    pcmc->default_nic_model = "e1000e";
 341
 342    m->family = "pc_q35";
 343    m->desc = "Standard PC (Q35 + ICH9, 2009)";
 344    m->units_per_default_bus = 1;
 345    m->default_machine_opts = "firmware=bios-256k.bin";
 346    m->default_display = "std";
 347    m->default_kernel_irqchip_split = false;
 348    m->no_floppy = 1;
 349    machine_class_allow_dynamic_sysbus_dev(m, TYPE_AMD_IOMMU_DEVICE);
 350    machine_class_allow_dynamic_sysbus_dev(m, TYPE_INTEL_IOMMU_DEVICE);
 351    machine_class_allow_dynamic_sysbus_dev(m, TYPE_RAMFB_DEVICE);
 352    machine_class_allow_dynamic_sysbus_dev(m, TYPE_VMBUS_BRIDGE);
 353    m->max_cpus = 288;
 354}
 355
 356static void pc_q35_5_1_machine_options(MachineClass *m)
 357{
 358    PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
 359    pc_q35_machine_options(m);
 360    m->alias = "q35";
 361    pcmc->default_cpu_version = 1;
 362}
 363
 364DEFINE_Q35_MACHINE(v5_1, "pc-q35-5.1", NULL,
 365                   pc_q35_5_1_machine_options);
 366
 367static void pc_q35_5_0_machine_options(MachineClass *m)
 368{
 369    pc_q35_5_1_machine_options(m);
 370    m->alias = NULL;
 371    m->numa_mem_supported = true;
 372    compat_props_add(m->compat_props, hw_compat_5_0, hw_compat_5_0_len);
 373    compat_props_add(m->compat_props, pc_compat_5_0, pc_compat_5_0_len);
 374    m->auto_enable_numa_with_memhp = false;
 375}
 376
 377DEFINE_Q35_MACHINE(v5_0, "pc-q35-5.0", NULL,
 378                   pc_q35_5_0_machine_options);
 379
 380static void pc_q35_4_2_machine_options(MachineClass *m)
 381{
 382    pc_q35_5_0_machine_options(m);
 383    m->alias = NULL;
 384    compat_props_add(m->compat_props, hw_compat_4_2, hw_compat_4_2_len);
 385    compat_props_add(m->compat_props, pc_compat_4_2, pc_compat_4_2_len);
 386}
 387
 388DEFINE_Q35_MACHINE(v4_2, "pc-q35-4.2", NULL,
 389                   pc_q35_4_2_machine_options);
 390
 391static void pc_q35_4_1_machine_options(MachineClass *m)
 392{
 393    pc_q35_4_2_machine_options(m);
 394    m->alias = NULL;
 395    compat_props_add(m->compat_props, hw_compat_4_1, hw_compat_4_1_len);
 396    compat_props_add(m->compat_props, pc_compat_4_1, pc_compat_4_1_len);
 397}
 398
 399DEFINE_Q35_MACHINE(v4_1, "pc-q35-4.1", NULL,
 400                   pc_q35_4_1_machine_options);
 401
 402static void pc_q35_4_0_1_machine_options(MachineClass *m)
 403{
 404    PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
 405    pc_q35_4_1_machine_options(m);
 406    m->alias = NULL;
 407    pcmc->default_cpu_version = CPU_VERSION_LEGACY;
 408    /*
 409     * This is the default machine for the 4.0-stable branch. It is basically
 410     * a 4.0 that doesn't use split irqchip by default. It MUST hence apply the
 411     * 4.0 compat props.
 412     */
 413    compat_props_add(m->compat_props, hw_compat_4_0, hw_compat_4_0_len);
 414    compat_props_add(m->compat_props, pc_compat_4_0, pc_compat_4_0_len);
 415}
 416
 417DEFINE_Q35_MACHINE(v4_0_1, "pc-q35-4.0.1", NULL,
 418                   pc_q35_4_0_1_machine_options);
 419
 420static void pc_q35_4_0_machine_options(MachineClass *m)
 421{
 422    pc_q35_4_0_1_machine_options(m);
 423    m->default_kernel_irqchip_split = true;
 424    m->alias = NULL;
 425    /* Compat props are applied by the 4.0.1 machine */
 426}
 427
 428DEFINE_Q35_MACHINE(v4_0, "pc-q35-4.0", NULL,
 429                   pc_q35_4_0_machine_options);
 430
 431static void pc_q35_3_1_machine_options(MachineClass *m)
 432{
 433    PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
 434
 435    pc_q35_4_0_machine_options(m);
 436    m->default_kernel_irqchip_split = false;
 437    pcmc->do_not_add_smb_acpi = true;
 438    m->smbus_no_migration_support = true;
 439    m->alias = NULL;
 440    pcmc->pvh_enabled = false;
 441    compat_props_add(m->compat_props, hw_compat_3_1, hw_compat_3_1_len);
 442    compat_props_add(m->compat_props, pc_compat_3_1, pc_compat_3_1_len);
 443}
 444
 445DEFINE_Q35_MACHINE(v3_1, "pc-q35-3.1", NULL,
 446                   pc_q35_3_1_machine_options);
 447
 448static void pc_q35_3_0_machine_options(MachineClass *m)
 449{
 450    pc_q35_3_1_machine_options(m);
 451    compat_props_add(m->compat_props, hw_compat_3_0, hw_compat_3_0_len);
 452    compat_props_add(m->compat_props, pc_compat_3_0, pc_compat_3_0_len);
 453}
 454
 455DEFINE_Q35_MACHINE(v3_0, "pc-q35-3.0", NULL,
 456                    pc_q35_3_0_machine_options);
 457
 458static void pc_q35_2_12_machine_options(MachineClass *m)
 459{
 460    pc_q35_3_0_machine_options(m);
 461    compat_props_add(m->compat_props, hw_compat_2_12, hw_compat_2_12_len);
 462    compat_props_add(m->compat_props, pc_compat_2_12, pc_compat_2_12_len);
 463}
 464
 465DEFINE_Q35_MACHINE(v2_12, "pc-q35-2.12", NULL,
 466                   pc_q35_2_12_machine_options);
 467
 468static void pc_q35_2_11_machine_options(MachineClass *m)
 469{
 470    PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
 471
 472    pc_q35_2_12_machine_options(m);
 473    pcmc->default_nic_model = "e1000";
 474    compat_props_add(m->compat_props, hw_compat_2_11, hw_compat_2_11_len);
 475    compat_props_add(m->compat_props, pc_compat_2_11, pc_compat_2_11_len);
 476}
 477
 478DEFINE_Q35_MACHINE(v2_11, "pc-q35-2.11", NULL,
 479                   pc_q35_2_11_machine_options);
 480
 481static void pc_q35_2_10_machine_options(MachineClass *m)
 482{
 483    pc_q35_2_11_machine_options(m);
 484    compat_props_add(m->compat_props, hw_compat_2_10, hw_compat_2_10_len);
 485    compat_props_add(m->compat_props, pc_compat_2_10, pc_compat_2_10_len);
 486    m->numa_auto_assign_ram = numa_legacy_auto_assign_ram;
 487    m->auto_enable_numa_with_memhp = false;
 488}
 489
 490DEFINE_Q35_MACHINE(v2_10, "pc-q35-2.10", NULL,
 491                   pc_q35_2_10_machine_options);
 492
 493static void pc_q35_2_9_machine_options(MachineClass *m)
 494{
 495    pc_q35_2_10_machine_options(m);
 496    compat_props_add(m->compat_props, hw_compat_2_9, hw_compat_2_9_len);
 497    compat_props_add(m->compat_props, pc_compat_2_9, pc_compat_2_9_len);
 498}
 499
 500DEFINE_Q35_MACHINE(v2_9, "pc-q35-2.9", NULL,
 501                   pc_q35_2_9_machine_options);
 502
 503static void pc_q35_2_8_machine_options(MachineClass *m)
 504{
 505    pc_q35_2_9_machine_options(m);
 506    compat_props_add(m->compat_props, hw_compat_2_8, hw_compat_2_8_len);
 507    compat_props_add(m->compat_props, pc_compat_2_8, pc_compat_2_8_len);
 508}
 509
 510DEFINE_Q35_MACHINE(v2_8, "pc-q35-2.8", NULL,
 511                   pc_q35_2_8_machine_options);
 512
 513static void pc_q35_2_7_machine_options(MachineClass *m)
 514{
 515    pc_q35_2_8_machine_options(m);
 516    m->max_cpus = 255;
 517    compat_props_add(m->compat_props, hw_compat_2_7, hw_compat_2_7_len);
 518    compat_props_add(m->compat_props, pc_compat_2_7, pc_compat_2_7_len);
 519}
 520
 521DEFINE_Q35_MACHINE(v2_7, "pc-q35-2.7", NULL,
 522                   pc_q35_2_7_machine_options);
 523
 524static void pc_q35_2_6_machine_options(MachineClass *m)
 525{
 526    PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
 527
 528    pc_q35_2_7_machine_options(m);
 529    pcmc->legacy_cpu_hotplug = true;
 530    pcmc->linuxboot_dma_enabled = false;
 531    compat_props_add(m->compat_props, hw_compat_2_6, hw_compat_2_6_len);
 532    compat_props_add(m->compat_props, pc_compat_2_6, pc_compat_2_6_len);
 533}
 534
 535DEFINE_Q35_MACHINE(v2_6, "pc-q35-2.6", NULL,
 536                   pc_q35_2_6_machine_options);
 537
 538static void pc_q35_2_5_machine_options(MachineClass *m)
 539{
 540    X86MachineClass *x86mc = X86_MACHINE_CLASS(m);
 541
 542    pc_q35_2_6_machine_options(m);
 543    x86mc->save_tsc_khz = false;
 544    m->legacy_fw_cfg_order = 1;
 545    compat_props_add(m->compat_props, hw_compat_2_5, hw_compat_2_5_len);
 546    compat_props_add(m->compat_props, pc_compat_2_5, pc_compat_2_5_len);
 547}
 548
 549DEFINE_Q35_MACHINE(v2_5, "pc-q35-2.5", NULL,
 550                   pc_q35_2_5_machine_options);
 551
 552static void pc_q35_2_4_machine_options(MachineClass *m)
 553{
 554    PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
 555
 556    pc_q35_2_5_machine_options(m);
 557    m->hw_version = "2.4.0";
 558    pcmc->broken_reserved_end = true;
 559    compat_props_add(m->compat_props, hw_compat_2_4, hw_compat_2_4_len);
 560    compat_props_add(m->compat_props, pc_compat_2_4, pc_compat_2_4_len);
 561}
 562
 563DEFINE_Q35_MACHINE(v2_4, "pc-q35-2.4", NULL,
 564                   pc_q35_2_4_machine_options);
 565