hw/i386/pc: move shared x86 functions to x86.c and export them

Move x86 functions that will be shared between PC and non-PC machine
types to x86.c, along with their helpers.

Signed-off-by: Sergio Lopez <slp@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>

1 files changed, 1 insertions, 586 deletions

diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 903bc05f8f..4a1bc95ccb 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -24,6 +24,7 @@
 
 #include "qemu/osdep.h"
 #include "qemu/units.h"
+#include "hw/i386/x86.h"
 #include "hw/i386/pc.h"
 #include "hw/char/serial.h"
 #include "hw/char/parallel.h"
@@ -103,9 +104,6 @@
 
 struct hpet_fw_config hpet_cfg = {.count = UINT8_MAX};
 
-/* Physical Address of PVH entry point read from kernel ELF NOTE */
-static size_t pvh_start_addr;
-
 GlobalProperty pc_compat_4_1[] = {};
 const size_t pc_compat_4_1_len = G_N_ELEMENTS(pc_compat_4_1);
 
@@ -867,481 +865,6 @@ static void handle_a20_line_change(void *opaque, int irq, int level)
     x86_cpu_set_a20(cpu, level);
 }
 
-/*
- * Calculates initial APIC ID for a specific CPU index
- *
- * Currently we need to be able to calculate the APIC ID from the CPU index
- * alone (without requiring a CPU object), as the QEMU<->Seabios interfaces have
- * no concept of "CPU index", and the NUMA tables on fw_cfg need the APIC ID of
- * all CPUs up to max_cpus.
- */
-static uint32_t x86_cpu_apic_id_from_index(PCMachineState *pcms,
-                                           unsigned int cpu_index)
-{
-    MachineState *ms = MACHINE(pcms);
-    PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
-    uint32_t correct_id;
-    static bool warned;
-
-    correct_id = x86_apicid_from_cpu_idx(pcms->smp_dies, ms->smp.cores,
-                                         ms->smp.threads, cpu_index);
-    if (pcmc->compat_apic_id_mode) {
-        if (cpu_index != correct_id && !warned && !qtest_enabled()) {
-            error_report("APIC IDs set in compatibility mode, "
-                         "CPU topology won't match the configuration");
-            warned = true;
-        }
-        return cpu_index;
-    } else {
-        return correct_id;
-    }
-}
-
-static long get_file_size(FILE *f)
-{
-    long where, size;
-
-    /* XXX: on Unix systems, using fstat() probably makes more sense */
-
-    where = ftell(f);
-    fseek(f, 0, SEEK_END);
-    size = ftell(f);
-    fseek(f, where, SEEK_SET);
-
-    return size;
-}
-
-struct setup_data {
-    uint64_t next;
-    uint32_t type;
-    uint32_t len;
-    uint8_t data[0];
-} __attribute__((packed));
-
-
-/*
- * The entry point into the kernel for PVH boot is different from
- * the native entry point.  The PVH entry is defined by the x86/HVM
- * direct boot ABI and is available in an ELFNOTE in the kernel binary.
- *
- * This function is passed to load_elf() when it is called from
- * load_elfboot() which then additionally checks for an ELF Note of
- * type XEN_ELFNOTE_PHYS32_ENTRY and passes it to this function to
- * parse the PVH entry address from the ELF Note.
- *
- * Due to trickery in elf_opts.h, load_elf() is actually available as
- * load_elf32() or load_elf64() and this routine needs to be able
- * to deal with being called as 32 or 64 bit.
- *
- * The address of the PVH entry point is saved to the 'pvh_start_addr'
- * global variable.  (although the entry point is 32-bit, the kernel
- * binary can be either 32-bit or 64-bit).
- */
-static uint64_t read_pvh_start_addr(void *arg1, void *arg2, bool is64)
-{
-    size_t *elf_note_data_addr;
-
-    /* Check if ELF Note header passed in is valid */
-    if (arg1 == NULL) {
-        return 0;
-    }
-
-    if (is64) {
-        struct elf64_note *nhdr64 = (struct elf64_note *)arg1;
-        uint64_t nhdr_size64 = sizeof(struct elf64_note);
-        uint64_t phdr_align = *(uint64_t *)arg2;
-        uint64_t nhdr_namesz = nhdr64->n_namesz;
-
-        elf_note_data_addr =
-            ((void *)nhdr64) + nhdr_size64 +
-            QEMU_ALIGN_UP(nhdr_namesz, phdr_align);
-    } else {
-        struct elf32_note *nhdr32 = (struct elf32_note *)arg1;
-        uint32_t nhdr_size32 = sizeof(struct elf32_note);
-        uint32_t phdr_align = *(uint32_t *)arg2;
-        uint32_t nhdr_namesz = nhdr32->n_namesz;
-
-        elf_note_data_addr =
-            ((void *)nhdr32) + nhdr_size32 +
-            QEMU_ALIGN_UP(nhdr_namesz, phdr_align);
-    }
-
-    pvh_start_addr = *elf_note_data_addr;
-
-    return pvh_start_addr;
-}
-
-static bool load_elfboot(const char *kernel_filename,
-                   int kernel_file_size,
-                   uint8_t *header,
-                   size_t pvh_xen_start_addr,
-                   FWCfgState *fw_cfg)
-{
-    uint32_t flags = 0;
-    uint32_t mh_load_addr = 0;
-    uint32_t elf_kernel_size = 0;
-    uint64_t elf_entry;
-    uint64_t elf_low, elf_high;
-    int kernel_size;
-
-    if (ldl_p(header) != 0x464c457f) {
-        return false; /* no elfboot */
-    }
-
-    bool elf_is64 = header[EI_CLASS] == ELFCLASS64;
-    flags = elf_is64 ?
-        ((Elf64_Ehdr *)header)->e_flags : ((Elf32_Ehdr *)header)->e_flags;
-
-    if (flags & 0x00010004) { /* LOAD_ELF_HEADER_HAS_ADDR */
-        error_report("elfboot unsupported flags = %x", flags);
-        exit(1);
-    }
-
-    uint64_t elf_note_type = XEN_ELFNOTE_PHYS32_ENTRY;
-    kernel_size = load_elf(kernel_filename, read_pvh_start_addr,
-                           NULL, &elf_note_type, &elf_entry,
-                           &elf_low, &elf_high, 0, I386_ELF_MACHINE,
-                           0, 0);
-
-    if (kernel_size < 0) {
-        error_report("Error while loading elf kernel");
-        exit(1);
-    }
-    mh_load_addr = elf_low;
-    elf_kernel_size = elf_high - elf_low;
-
-    if (pvh_start_addr == 0) {
-        error_report("Error loading uncompressed kernel without PVH ELF Note");
-        exit(1);
-    }
-    fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_ENTRY, pvh_start_addr);
-    fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_ADDR, mh_load_addr);
-    fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_SIZE, elf_kernel_size);
-
-    return true;
-}
-
-static void x86_load_linux(PCMachineState *pcms,
-                           FWCfgState *fw_cfg)
-{
-    uint16_t protocol;
-    int setup_size, kernel_size, cmdline_size;
-    int dtb_size, setup_data_offset;
-    uint32_t initrd_max;
-    uint8_t header[8192], *setup, *kernel;
-    hwaddr real_addr, prot_addr, cmdline_addr, initrd_addr = 0;
-    FILE *f;
-    char *vmode;
-    MachineState *machine = MACHINE(pcms);
-    PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
-    struct setup_data *setup_data;
-    const char *kernel_filename = machine->kernel_filename;
-    const char *initrd_filename = machine->initrd_filename;
-    const char *dtb_filename = machine->dtb;
-    const char *kernel_cmdline = machine->kernel_cmdline;
-
-    /* Align to 16 bytes as a paranoia measure */
-    cmdline_size = (strlen(kernel_cmdline) + 16) & ~15;
-
-    /* load the kernel header */
-    f = fopen(kernel_filename, "rb");
-    if (!f) {
-        fprintf(stderr, "qemu: could not open kernel file '%s': %s\n",
-                kernel_filename, strerror(errno));
-        exit(1);
-    }
-
-    kernel_size = get_file_size(f);
-    if (!kernel_size ||
-        fread(header, 1, MIN(ARRAY_SIZE(header), kernel_size), f) !=
-        MIN(ARRAY_SIZE(header), kernel_size)) {
-        fprintf(stderr, "qemu: could not load kernel '%s': %s\n",
-                kernel_filename, strerror(errno));
-        exit(1);
-    }
-
-    /* kernel protocol version */
-    if (ldl_p(header + 0x202) == 0x53726448) {
-        protocol = lduw_p(header + 0x206);
-    } else {
-        /*
-         * This could be a multiboot kernel. If it is, let's stop treating it
-         * like a Linux kernel.
-         * Note: some multiboot images could be in the ELF format (the same of
-         * PVH), so we try multiboot first since we check the multiboot magic
-         * header before to load it.
-         */
-        if (load_multiboot(fw_cfg, f, kernel_filename, initrd_filename,
-                           kernel_cmdline, kernel_size, header)) {
-            return;
-        }
-        /*
-         * Check if the file is an uncompressed kernel file (ELF) and load it,
-         * saving the PVH entry point used by the x86/HVM direct boot ABI.
-         * If load_elfboot() is successful, populate the fw_cfg info.
-         */
-        if (pcmc->pvh_enabled &&
-            load_elfboot(kernel_filename, kernel_size,
-                         header, pvh_start_addr, fw_cfg)) {
-            fclose(f);
-
-            fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_SIZE,
-                strlen(kernel_cmdline) + 1);
-            fw_cfg_add_string(fw_cfg, FW_CFG_CMDLINE_DATA, kernel_cmdline);
-
-            fw_cfg_add_i32(fw_cfg, FW_CFG_SETUP_SIZE, sizeof(header));
-            fw_cfg_add_bytes(fw_cfg, FW_CFG_SETUP_DATA,
-                             header, sizeof(header));
-
-            /* load initrd */
-            if (initrd_filename) {
-                GMappedFile *mapped_file;
-                gsize initrd_size;
-                gchar *initrd_data;
-                GError *gerr = NULL;
-
-                mapped_file = g_mapped_file_new(initrd_filename, false, &gerr);
-                if (!mapped_file) {
-                    fprintf(stderr, "qemu: error reading initrd %s: %s\n",
-                            initrd_filename, gerr->message);
-                    exit(1);
-                }
-                pcms->initrd_mapped_file = mapped_file;
-
-                initrd_data = g_mapped_file_get_contents(mapped_file);
-                initrd_size = g_mapped_file_get_length(mapped_file);
-                initrd_max = pcms->below_4g_mem_size - pcmc->acpi_data_size - 1;
-                if (initrd_size >= initrd_max) {
-                    fprintf(stderr, "qemu: initrd is too large, cannot support."
-                            "(max: %"PRIu32", need %"PRId64")\n",
-                            initrd_max, (uint64_t)initrd_size);
-                    exit(1);
-                }
-
-                initrd_addr = (initrd_max - initrd_size) & ~4095;
-
-                fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_ADDR, initrd_addr);
-                fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_SIZE, initrd_size);
-                fw_cfg_add_bytes(fw_cfg, FW_CFG_INITRD_DATA, initrd_data,
-                                 initrd_size);
-            }
-
-            option_rom[nb_option_roms].bootindex = 0;
-            option_rom[nb_option_roms].name = "pvh.bin";
-            nb_option_roms++;
-
-            return;
-        }
-        protocol = 0;
-    }
-
-    if (protocol < 0x200 || !(header[0x211] & 0x01)) {
-        /* Low kernel */
-        real_addr    = 0x90000;
-        cmdline_addr = 0x9a000 - cmdline_size;
-        prot_addr    = 0x10000;
-    } else if (protocol < 0x202) {
-        /* High but ancient kernel */
-        real_addr    = 0x90000;
-        cmdline_addr = 0x9a000 - cmdline_size;
-        prot_addr    = 0x100000;
-    } else {
-        /* High and recent kernel */
-        real_addr    = 0x10000;
-        cmdline_addr = 0x20000;
-        prot_addr    = 0x100000;
-    }
-
-    /* highest address for loading the initrd */
-    if (protocol >= 0x20c &&
-        lduw_p(header + 0x236) & XLF_CAN_BE_LOADED_ABOVE_4G) {
-        /*
-         * Linux has supported initrd up to 4 GB for a very long time (2007,
-         * long before XLF_CAN_BE_LOADED_ABOVE_4G which was added in 2013),
-         * though it only sets initrd_max to 2 GB to "work around bootloader
-         * bugs". Luckily, QEMU firmware(which does something like bootloader)
-         * has supported this.
-         *
-         * It's believed that if XLF_CAN_BE_LOADED_ABOVE_4G is set, initrd can
-         * be loaded into any address.
-         *
-         * In addition, initrd_max is uint32_t simply because QEMU doesn't
-         * support the 64-bit boot protocol (specifically the ext_ramdisk_image
-         * field).
-         *
-         * Therefore here just limit initrd_max to UINT32_MAX simply as well.
-         */
-        initrd_max = UINT32_MAX;
-    } else if (protocol >= 0x203) {
-        initrd_max = ldl_p(header + 0x22c);
-    } else {
-        initrd_max = 0x37ffffff;
-    }
-
-    if (initrd_max >= pcms->below_4g_mem_size - pcmc->acpi_data_size) {
-        initrd_max = pcms->below_4g_mem_size - pcmc->acpi_data_size - 1;
-    }
-
-    fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_ADDR, cmdline_addr);
-    fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_SIZE, strlen(kernel_cmdline) + 1);
-    fw_cfg_add_string(fw_cfg, FW_CFG_CMDLINE_DATA, kernel_cmdline);
-
-    if (protocol >= 0x202) {
-        stl_p(header + 0x228, cmdline_addr);
-    } else {
-        stw_p(header + 0x20, 0xA33F);
-        stw_p(header + 0x22, cmdline_addr - real_addr);
-    }
-
-    /* handle vga= parameter */
-    vmode = strstr(kernel_cmdline, "vga=");
-    if (vmode) {
-        unsigned int video_mode;
-        int ret;
-        /* skip "vga=" */
-        vmode += 4;
-        if (!strncmp(vmode, "normal", 6)) {
-            video_mode = 0xffff;
-        } else if (!strncmp(vmode, "ext", 3)) {
-            video_mode = 0xfffe;
-        } else if (!strncmp(vmode, "ask", 3)) {
-            video_mode = 0xfffd;
-        } else {
-            ret = qemu_strtoui(vmode, NULL, 0, &video_mode);
-            if (ret != 0) {
-                fprintf(stderr, "qemu: can't parse 'vga' parameter: %s\n",
-                        strerror(-ret));
-                exit(1);
-            }
-        }
-        stw_p(header + 0x1fa, video_mode);
-    }
-
-    /* loader type */
-    /*
-     * High nybble = B reserved for QEMU; low nybble is revision number.
-     * If this code is substantially changed, you may want to consider
-     * incrementing the revision.
-     */
-    if (protocol >= 0x200) {
-        header[0x210] = 0xB0;
-    }
-    /* heap */
-    if (protocol >= 0x201) {
-        header[0x211] |= 0x80; /* CAN_USE_HEAP */
-        stw_p(header + 0x224, cmdline_addr - real_addr - 0x200);
-    }
-
-    /* load initrd */
-    if (initrd_filename) {
-        GMappedFile *mapped_file;
-        gsize initrd_size;
-        gchar *initrd_data;
-        GError *gerr = NULL;
-
-        if (protocol < 0x200) {
-            fprintf(stderr, "qemu: linux kernel too old to load a ram disk\n");
-            exit(1);
-        }
-
-        mapped_file = g_mapped_file_new(initrd_filename, false, &gerr);
-        if (!mapped_file) {
-            fprintf(stderr, "qemu: error reading initrd %s: %s\n",
-                    initrd_filename, gerr->message);
-            exit(1);
-        }
-        pcms->initrd_mapped_file = mapped_file;
-
-        initrd_data = g_mapped_file_get_contents(mapped_file);
-        initrd_size = g_mapped_file_get_length(mapped_file);
-        if (initrd_size >= initrd_max) {
-            fprintf(stderr, "qemu: initrd is too large, cannot support."
-                    "(max: %"PRIu32", need %"PRId64")\n",
-                    initrd_max, (uint64_t)initrd_size);
-            exit(1);
-        }
-
-        initrd_addr = (initrd_max - initrd_size) & ~4095;
-
-        fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_ADDR, initrd_addr);
-        fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_SIZE, initrd_size);
-        fw_cfg_add_bytes(fw_cfg, FW_CFG_INITRD_DATA, initrd_data, initrd_size);
-
-        stl_p(header + 0x218, initrd_addr);
-        stl_p(header + 0x21c, initrd_size);
-    }
-
-    /* load kernel and setup */
-    setup_size = header[0x1f1];
-    if (setup_size == 0) {
-        setup_size = 4;
-    }
-    setup_size = (setup_size + 1) * 512;
-    if (setup_size > kernel_size) {
-        fprintf(stderr, "qemu: invalid kernel header\n");
-        exit(1);
-    }
-    kernel_size -= setup_size;
-
-    setup  = g_malloc(setup_size);
-    kernel = g_malloc(kernel_size);
-    fseek(f, 0, SEEK_SET);
-    if (fread(setup, 1, setup_size, f) != setup_size) {
-        fprintf(stderr, "fread() failed\n");
-        exit(1);
-    }
-    if (fread(kernel, 1, kernel_size, f) != kernel_size) {
-        fprintf(stderr, "fread() failed\n");
-        exit(1);
-    }
-    fclose(f);
-
-    /* append dtb to kernel */
-    if (dtb_filename) {
-        if (protocol < 0x209) {
-            fprintf(stderr, "qemu: Linux kernel too old to load a dtb\n");
-            exit(1);
-        }
-
-        dtb_size = get_image_size(dtb_filename);
-        if (dtb_size <= 0) {
-            fprintf(stderr, "qemu: error reading dtb %s: %s\n",
-                    dtb_filename, strerror(errno));
-            exit(1);
-        }
-
-        setup_data_offset = QEMU_ALIGN_UP(kernel_size, 16);
-        kernel_size = setup_data_offset + sizeof(struct setup_data) + dtb_size;
-        kernel = g_realloc(kernel, kernel_size);
-
-        stq_p(header + 0x250, prot_addr + setup_data_offset);
-
-        setup_data = (struct setup_data *)(kernel + setup_data_offset);
-        setup_data->next = 0;
-        setup_data->type = cpu_to_le32(SETUP_DTB);
-        setup_data->len = cpu_to_le32(dtb_size);
-
-        load_image_size(dtb_filename, setup_data->data, dtb_size);
-    }
-
-    memcpy(setup, header, MIN(sizeof(header), setup_size));
-
-    fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_ADDR, prot_addr);
-    fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_SIZE, kernel_size);
-    fw_cfg_add_bytes(fw_cfg, FW_CFG_KERNEL_DATA, kernel, kernel_size);
-
-    fw_cfg_add_i32(fw_cfg, FW_CFG_SETUP_ADDR, real_addr);
-    fw_cfg_add_i32(fw_cfg, FW_CFG_SETUP_SIZE, setup_size);
-    fw_cfg_add_bytes(fw_cfg, FW_CFG_SETUP_DATA, setup, setup_size);
-
-    option_rom[nb_option_roms].bootindex = 0;
-    option_rom[nb_option_roms].name = "linuxboot.bin";
-    if (pcmc->linuxboot_dma_enabled && fw_cfg_dma_enabled(fw_cfg)) {
-        option_rom[nb_option_roms].name = "linuxboot_dma.bin";
-    }
-    nb_option_roms++;
-}
-
 #define NE2000_NB_MAX 6
 
 static const int ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360,
@@ -1378,24 +901,6 @@ void pc_acpi_smi_interrupt(void *opaque, int irq, int level)
     }
 }
 
-static void x86_cpu_new(PCMachineState *pcms, int64_t apic_id, Error **errp)
-{
-    Object *cpu = NULL;
-    Error *local_err = NULL;
-    CPUX86State *env = NULL;
-
-    cpu = object_new(MACHINE(pcms)->cpu_type);
-
-    env = &X86_CPU(cpu)->env;
-    env->nr_dies = pcms->smp_dies;
-
-    object_property_set_uint(cpu, apic_id, "apic-id", &local_err);
-    object_property_set_bool(cpu, true, "realized", &local_err);
-
-    object_unref(cpu);
-    error_propagate(errp, local_err);
-}
-
 /*
  * This function is very similar to smp_parse()
  * in hw/core/machine.c but includes CPU die support.
@@ -1501,32 +1006,6 @@ void pc_hot_add_cpu(MachineState *ms, const int64_t id, Error **errp)
     }
 }
 
-void x86_cpus_init(PCMachineState *pcms)
-{
-    int i;
-    const CPUArchIdList *possible_cpus;
-    MachineState *ms = MACHINE(pcms);
-    MachineClass *mc = MACHINE_GET_CLASS(pcms);
-    PCMachineClass *pcmc = PC_MACHINE_CLASS(mc);
-
-    x86_cpu_set_default_version(pcmc->default_cpu_version);
-
-    /*
-     * Calculates the limit to CPU APIC ID values
-     *
-     * Limit for the APIC ID value, so that all
-     * CPU APIC IDs are < pcms->apic_id_limit.
-     *
-     * This is used for FW_CFG_MAX_CPUS. See comments on fw_cfg_arch_create().
-     */
-    pcms->apic_id_limit = x86_cpu_apic_id_from_index(pcms,
-                                                     ms->smp.max_cpus - 1) + 1;
-    possible_cpus = mc->possible_cpu_arch_ids(ms);
-    for (i = 0; i < ms->smp.cpus; i++) {
-        x86_cpu_new(pcms, possible_cpus->cpus[i].arch_id, &error_fatal);
-    }
-}
-
 static void rtc_set_cpus_count(ISADevice *rtc, uint16_t cpus_count)
 {
     if (cpus_count > 0xff) {
@@ -2685,70 +2164,6 @@ static void pc_machine_wakeup(MachineState *machine)
     cpu_synchronize_all_post_reset();
 }
 
-static CpuInstanceProperties
-x86_cpu_index_to_props(MachineState *ms, unsigned cpu_index)
-{
-    MachineClass *mc = MACHINE_GET_CLASS(ms);
-    const CPUArchIdList *possible_cpus = mc->possible_cpu_arch_ids(ms);
-
-    assert(cpu_index < possible_cpus->len);
-    return possible_cpus->cpus[cpu_index].props;
-}
-
-static int64_t x86_get_default_cpu_node_id(const MachineState *ms, int idx)
-{
-   X86CPUTopoInfo topo;
-   PCMachineState *pcms = PC_MACHINE(ms);
-
-   assert(idx < ms->possible_cpus->len);
-   x86_topo_ids_from_apicid(ms->possible_cpus->cpus[idx].arch_id,
-                            pcms->smp_dies, ms->smp.cores,
-                            ms->smp.threads, &topo);
-   return topo.pkg_id % ms->numa_state->num_nodes;
-}
-
-static const CPUArchIdList *x86_possible_cpu_arch_ids(MachineState *ms)
-{
-    PCMachineState *pcms = PC_MACHINE(ms);
-    int i;
-    unsigned int max_cpus = ms->smp.max_cpus;
-
-    if (ms->possible_cpus) {
-        /*
-         * make sure that max_cpus hasn't changed since the first use, i.e.
-         * -smp hasn't been parsed after it
-         */
-        assert(ms->possible_cpus->len == max_cpus);
-        return ms->possible_cpus;
-    }
-
-    ms->possible_cpus = g_malloc0(sizeof(CPUArchIdList) +
-                                  sizeof(CPUArchId) * max_cpus);
-    ms->possible_cpus->len = max_cpus;
-    for (i = 0; i < ms->possible_cpus->len; i++) {
-        X86CPUTopoInfo topo;
-
-        ms->possible_cpus->cpus[i].type = ms->cpu_type;
-        ms->possible_cpus->cpus[i].vcpus_count = 1;
-        ms->possible_cpus->cpus[i].arch_id =
-            x86_cpu_apic_id_from_index(pcms, i);
-        x86_topo_ids_from_apicid(ms->possible_cpus->cpus[i].arch_id,
-                                 pcms->smp_dies, ms->smp.cores,
-                                 ms->smp.threads, &topo);
-        ms->possible_cpus->cpus[i].props.has_socket_id = true;
-        ms->possible_cpus->cpus[i].props.socket_id = topo.pkg_id;
-        if (pcms->smp_dies > 1) {
-            ms->possible_cpus->cpus[i].props.has_die_id = true;
-            ms->possible_cpus->cpus[i].props.die_id = topo.die_id;
-        }
-        ms->possible_cpus->cpus[i].props.has_core_id = true;
-        ms->possible_cpus->cpus[i].props.core_id = topo.core_id;
-        ms->possible_cpus->cpus[i].props.has_thread_id = true;
-        ms->possible_cpus->cpus[i].props.thread_id = topo.smt_id;
-    }
-    return ms->possible_cpus;
-}
-
 static void x86_nmi(NMIState *n, int cpu_index, Error **errp)
 {
     /* cpu index isn't used */