arch/x86/mm/numa_64.c

   1 /*
   2  * Generic VM initialization for x86-64 NUMA setups.
   3  * Copyright 2002,2003 Andi Kleen, SuSE Labs.
   4  */
   5 #include <linux/kernel.h>
   6 #include <linux/mm.h>
   7 #include <linux/string.h>
   8 #include <linux/init.h>
   9 #include <linux/bootmem.h>
  10 #include <linux/mmzone.h>
  11 #include <linux/ctype.h>
  12 #include <linux/module.h>
  13 #include <linux/nodemask.h>
  14
  15 #include <asm/e820.h>
  16 #include <asm/proto.h>
  17 #include <asm/dma.h>
  18 #include <asm/numa.h>
  19 #include <asm/acpi.h>
  20 #include <asm/k8.h>
  21
  22 #ifndef Dprintk
  23 #define Dprintk(x...)
  24 #endif
  25
  26 struct pglist_data *node_data[MAX_NUMNODES] __read_mostly;
  27 EXPORT_SYMBOL(node_data);
  28
  29 bootmem_data_t plat_node_bdata[MAX_NUMNODES];
  30
  31 struct memnode memnode;
  32
  33 int cpu_to_node_map[NR_CPUS] __read_mostly = {
  34         [0 ... NR_CPUS-1] = NUMA_NO_NODE
  35 };
  36 EXPORT_SYMBOL(cpu_to_node_map);
  37
  38 unsigned char apicid_to_node[MAX_LOCAL_APIC] __cpuinitdata = {
  39         [0 ... MAX_LOCAL_APIC-1] = NUMA_NO_NODE
  40 };
  41
  42 cpumask_t node_to_cpumask_map[MAX_NUMNODES] __read_mostly;
  43 EXPORT_SYMBOL(node_to_cpumask_map);
  44
  45 int numa_off __initdata;
  46 unsigned long __initdata nodemap_addr;
  47 unsigned long __initdata nodemap_size;
  48
  49 /*
  50  * Given a shift value, try to populate memnodemap[]
  51  * Returns :
  52  * 1 if OK
  53  * 0 if memnodmap[] too small (of shift too small)
  54  * -1 if node overlap or lost ram (shift too big)
  55  */
  56 static int __init populate_memnodemap(const struct bootnode *nodes,
  57                                       int numnodes, int shift)
  58 {
  59         unsigned long addr, end;
  60         int i, res = -1;
  61
  62         memset(memnodemap, 0xff, memnodemapsize);
  63         for (i = 0; i < numnodes; i++) {
  64                 addr = nodes[i].start;
  65                 end = nodes[i].end;
  66                 if (addr >= end)
  67                         continue;
  68                 if ((end >> shift) >= memnodemapsize)
  69                         return 0;
  70                 do {
  71                         if (memnodemap[addr >> shift] != 0xff)
  72                                 return -1;
  73                         memnodemap[addr >> shift] = i;
  74                         addr += (1UL << shift);
  75                 } while (addr < end);
  76                 res = 1;
  77         }
  78         return res;
  79 }
  80
  81 static int __init allocate_cachealigned_memnodemap(void)
  82 {
  83         unsigned long pad, pad_addr;
  84
  85         memnodemap = memnode.embedded_map;
  86         if (memnodemapsize <= 48)
  87                 return 0;
  88
  89         pad = L1_CACHE_BYTES - 1;
  90         pad_addr = 0x8000;
  91         nodemap_size = pad + memnodemapsize;
  92         nodemap_addr = find_e820_area(pad_addr, end_pfn<<PAGE_SHIFT,
  93                                       nodemap_size);
  94         if (nodemap_addr == -1UL) {
  95                 printk(KERN_ERR
  96                        "NUMA: Unable to allocate Memory to Node hash map\n");
  97                 nodemap_addr = nodemap_size = 0;
  98                 return -1;
  99         }
 100         pad_addr = (nodemap_addr + pad) & ~pad;
 101         memnodemap = phys_to_virt(pad_addr);
 102
 103         printk(KERN_DEBUG "NUMA: Allocated memnodemap from %lx - %lx\n",
 104                nodemap_addr, nodemap_addr + nodemap_size);
 105         return 0;
 106 }
 107
 108 /*
 109  * The LSB of all start and end addresses in the node map is the value of the
 110  * maximum possible shift.
 111  */
 112 static int __init extract_lsb_from_nodes(const struct bootnode *nodes,
 113                                          int numnodes)
 114 {
 115         int i, nodes_used = 0;
 116         unsigned long start, end;
 117         unsigned long bitfield = 0, memtop = 0;
 118
 119         for (i = 0; i < numnodes; i++) {
 120                 start = nodes[i].start;
 121                 end = nodes[i].end;
 122                 if (start >= end)
 123                         continue;
 124                 bitfield |= start;
 125                 nodes_used++;
 126                 if (end > memtop)
 127                         memtop = end;
 128         }
 129         if (nodes_used <= 1)
 130                 i = 63;
 131         else
 132                 i = find_first_bit(&bitfield, sizeof(unsigned long)*8);
 133         memnodemapsize = (memtop >> i)+1;
 134         return i;
 135 }
 136
 137 int __init compute_hash_shift(struct bootnode *nodes, int numnodes)
 138 {
 139         int shift;
 140
 141         shift = extract_lsb_from_nodes(nodes, numnodes);
 142         if (allocate_cachealigned_memnodemap())
 143                 return -1;
 144         printk(KERN_DEBUG "NUMA: Using %d for the hash shift.\n",
 145                 shift);
 146
 147         if (populate_memnodemap(nodes, numnodes, shift) != 1) {
 148                 printk(KERN_INFO "Your memory is not aligned you need to "
 149                        "rebuild your kernel with a bigger NODEMAPSIZE "
 150                        "shift=%d\n", shift);
 151                 return -1;
 152         }
 153         return shift;
 154 }
 155
 156 int early_pfn_to_nid(unsigned long pfn)
 157 {
 158         return phys_to_nid(pfn << PAGE_SHIFT);
 159 }
 160
 161 static void * __init early_node_mem(int nodeid, unsigned long start,
 162                                     unsigned long end, unsigned long size)
 163 {
 164         unsigned long mem = find_e820_area(start, end, size);
 165         void *ptr;
 166
 167         if (mem != -1L)
 168                 return __va(mem);
 169         ptr = __alloc_bootmem_nopanic(size,
 170                                 SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS));
 171         if (ptr == NULL) {
 172                 printk(KERN_ERR "Cannot find %lu bytes in node %d\n",
 173                        size, nodeid);
 174                 return NULL;
 175         }
 176         return ptr;
 177 }
 178
 179 /* Initialize bootmem allocator for a node */
 180 void __init setup_node_bootmem(int nodeid, unsigned long start,
 181                                unsigned long end)
 182 {
 183         unsigned long start_pfn, end_pfn, bootmap_pages, bootmap_size;
 184         unsigned long bootmap_start, nodedata_phys;
 185         void *bootmap;
 186         const int pgdat_size = round_up(sizeof(pg_data_t), PAGE_SIZE);
 187
 188         start = round_up(start, ZONE_ALIGN);
 189
 190         printk(KERN_INFO "Bootmem setup node %d %016lx-%016lx\n", nodeid,
 191                start, end);
 192
 193         start_pfn = start >> PAGE_SHIFT;
 194         end_pfn = end >> PAGE_SHIFT;
 195
 196         node_data[nodeid] = early_node_mem(nodeid, start, end, pgdat_size);
 197         if (node_data[nodeid] == NULL)
 198                 return;
 199         nodedata_phys = __pa(node_data[nodeid]);
 200
 201         memset(NODE_DATA(nodeid), 0, sizeof(pg_data_t));
 202         NODE_DATA(nodeid)->bdata = &plat_node_bdata[nodeid];
 203         NODE_DATA(nodeid)->node_start_pfn = start_pfn;
 204         NODE_DATA(nodeid)->node_spanned_pages = end_pfn - start_pfn;
 205
 206         /* Find a place for the bootmem map */
 207         bootmap_pages = bootmem_bootmap_pages(end_pfn - start_pfn);
 208         bootmap_start = round_up(nodedata_phys + pgdat_size, PAGE_SIZE);
 209         bootmap = early_node_mem(nodeid, bootmap_start, end,
 210                                         bootmap_pages<<PAGE_SHIFT);
 211         if (bootmap == NULL)  {
 212                 if (nodedata_phys < start || nodedata_phys >= end)
 213                         free_bootmem((unsigned long)node_data[nodeid],
 214                                      pgdat_size);
 215                 node_data[nodeid] = NULL;
 216                 return;
 217         }
 218         bootmap_start = __pa(bootmap);
 219         Dprintk("bootmap start %lu pages %lu\n", bootmap_start, bootmap_pages);
 220
 221         bootmap_size = init_bootmem_node(NODE_DATA(nodeid),
 222                                          bootmap_start >> PAGE_SHIFT,
 223                                          start_pfn, end_pfn);
 224
 225         free_bootmem_with_active_regions(nodeid, end);
 226
 227         reserve_bootmem_node(NODE_DATA(nodeid), nodedata_phys, pgdat_size);
 228         reserve_bootmem_node(NODE_DATA(nodeid), bootmap_start,
 229                              bootmap_pages<<PAGE_SHIFT);
 230 #ifdef CONFIG_ACPI_NUMA
 231         srat_reserve_add_area(nodeid);
 232 #endif
 233         node_set_online(nodeid);
 234 }
 235
 236 #ifdef CONFIG_FLAT_NODE_MEM_MAP
 237 /* Initialize final allocator for a zone */
 238 static void __init flat_setup_node_zones(int nodeid)
 239 {
 240         unsigned long start_pfn, end_pfn, memmapsize, limit;
 241
 242         start_pfn = node_start_pfn(nodeid);
 243         end_pfn = node_end_pfn(nodeid);
 244
 245         Dprintk(KERN_INFO "Setting up memmap for node %d %lx-%lx\n",
 246                 nodeid, start_pfn, end_pfn);
 247
 248         /*
 249          * Try to allocate mem_map at end to not fill up precious <4GB
 250          * memory.
 251          */
 252         memmapsize = sizeof(struct page) * (end_pfn-start_pfn);
 253         limit = end_pfn << PAGE_SHIFT;
 254
 255         NODE_DATA(nodeid)->node_mem_map =
 256                 __alloc_bootmem_core(NODE_DATA(nodeid)->bdata,
 257                                      memmapsize, SMP_CACHE_BYTES,
 258                                      round_down(limit - memmapsize, PAGE_SIZE),
 259                                      limit);
 260 }
 261 #else
 262 #define flat_setup_node_zones(i) do {} while (0)
 263 #endif
 264
 265 /*
 266  * There are unfortunately some poorly designed mainboards around that
 267  * only connect memory to a single CPU. This breaks the 1:1 cpu->node
 268  * mapping. To avoid this fill in the mapping for all possible CPUs,
 269  * as the number of CPUs is not known yet. We round robin the existing
 270  * nodes.
 271  */
 272 void __init numa_init_array(void)
 273 {
 274         int rr, i;
 275
 276         rr = first_node(node_online_map);
 277         for (i = 0; i < NR_CPUS; i++) {
 278                 if (cpu_to_node(i) != NUMA_NO_NODE)
 279                         continue;
 280                 numa_set_node(i, rr);
 281                 rr = next_node(rr, node_online_map);
 282                 if (rr == MAX_NUMNODES)
 283                         rr = first_node(node_online_map);
 284         }
 285 }
 286
 287 #ifdef CONFIG_NUMA_EMU
 288 /* Numa emulation */
 289 char *cmdline __initdata;
 290
 291 /*
 292  * Setups up nid to range from addr to addr + size.  If the end
 293  * boundary is greater than max_addr, then max_addr is used instead.
 294  * The return value is 0 if there is additional memory left for
 295  * allocation past addr and -1 otherwise.  addr is adjusted to be at
 296  * the end of the node.
 297  */
 298 static int __init setup_node_range(int nid, struct bootnode *nodes, u64 *addr,
 299                                    u64 size, u64 max_addr)
 300 {
 301         int ret = 0;
 302
 303         nodes[nid].start = *addr;
 304         *addr += size;
 305         if (*addr >= max_addr) {
 306                 *addr = max_addr;
 307                 ret = -1;
 308         }
 309         nodes[nid].end = *addr;
 310         node_set(nid, node_possible_map);
 311         printk(KERN_INFO "Faking node %d at %016Lx-%016Lx (%LuMB)\n", nid,
 312                nodes[nid].start, nodes[nid].end,
 313                (nodes[nid].end - nodes[nid].start) >> 20);
 314         return ret;
 315 }
 316
 317 /*
 318  * Splits num_nodes nodes up equally starting at node_start.  The return value
 319  * is the number of nodes split up and addr is adjusted to be at the end of the
 320  * last node allocated.
 321  */
 322 static int __init split_nodes_equally(struct bootnode *nodes, u64 *addr,
 323                                       u64 max_addr, int node_start,
 324                                       int num_nodes)
 325 {
 326         unsigned int big;
 327         u64 size;
 328         int i;
 329
 330         if (num_nodes <= 0)
 331                 return -1;
 332         if (num_nodes > MAX_NUMNODES)
 333                 num_nodes = MAX_NUMNODES;
 334         size = (max_addr - *addr - e820_hole_size(*addr, max_addr)) /
 335                num_nodes;
 336         /*
 337          * Calculate the number of big nodes that can be allocated as a result
 338          * of consolidating the leftovers.
 339          */
 340         big = ((size & ~FAKE_NODE_MIN_HASH_MASK) * num_nodes) /
 341               FAKE_NODE_MIN_SIZE;
 342
 343         /* Round down to nearest FAKE_NODE_MIN_SIZE. */
 344         size &= FAKE_NODE_MIN_HASH_MASK;
 345         if (!size) {
 346                 printk(KERN_ERR "Not enough memory for each node.  "
 347                        "NUMA emulation disabled.\n");
 348                 return -1;
 349         }
 350
 351         for (i = node_start; i < num_nodes + node_start; i++) {
 352                 u64 end = *addr + size;
 353
 354                 if (i < big)
 355                         end += FAKE_NODE_MIN_SIZE;
 356                 /*
 357                  * The final node can have the remaining system RAM.  Other
 358                  * nodes receive roughly the same amount of available pages.
 359                  */
 360                 if (i == num_nodes + node_start - 1)
 361                         end = max_addr;
 362                 else
 363                         while (end - *addr - e820_hole_size(*addr, end) <
 364                                size) {
 365                                 end += FAKE_NODE_MIN_SIZE;
 366                                 if (end > max_addr) {
 367                                         end = max_addr;
 368                                         break;
 369                                 }
 370                         }
 371                 if (setup_node_range(i, nodes, addr, end - *addr, max_addr) < 0)
 372                         break;
 373         }
 374         return i - node_start + 1;
 375 }
 376
 377 /*
 378  * Splits the remaining system RAM into chunks of size.  The remaining memory is
 379  * always assigned to a final node and can be asymmetric.  Returns the number of
 380  * nodes split.
 381  */
 382 static int __init split_nodes_by_size(struct bootnode *nodes, u64 *addr,
 383                                       u64 max_addr, int node_start, u64 size)
 384 {
 385         int i = node_start;
 386         size = (size << 20) & FAKE_NODE_MIN_HASH_MASK;
 387         while (!setup_node_range(i++, nodes, addr, size, max_addr))
 388                 ;
 389         return i - node_start;
 390 }
 391
 392 /*
 393  * Sets up the system RAM area from start_pfn to end_pfn according to the
 394  * numa=fake command-line option.
 395  */
 396 static int __init numa_emulation(unsigned long start_pfn, unsigned long end_pfn)
 397 {
 398         struct bootnode nodes[MAX_NUMNODES];
 399         u64 size, addr = start_pfn << PAGE_SHIFT;
 400         u64 max_addr = end_pfn << PAGE_SHIFT;
 401         int num_nodes = 0, num = 0, coeff_flag, coeff = -1, i;
 402
 403         memset(&nodes, 0, sizeof(nodes));
 404         /*
 405          * If the numa=fake command-line is just a single number N, split the
 406          * system RAM into N fake nodes.
 407          */
 408         if (!strchr(cmdline, '*') && !strchr(cmdline, ',')) {
 409                 long n = simple_strtol(cmdline, NULL, 0);
 410
 411                 num_nodes = split_nodes_equally(nodes, &addr, max_addr, 0, n);
 412                 if (num_nodes < 0)
 413                         return num_nodes;
 414                 goto out;
 415         }
 416
 417         /* Parse the command line. */
 418         for (coeff_flag = 0; ; cmdline++) {
 419                 if (*cmdline && isdigit(*cmdline)) {
 420                         num = num * 10 + *cmdline - '0';
 421                         continue;
 422                 }
 423                 if (*cmdline == '*') {
 424                         if (num > 0)
 425                                 coeff = num;
 426                         coeff_flag = 1;
 427                 }
 428                 if (!*cmdline || *cmdline == ',') {
 429                         if (!coeff_flag)
 430                                 coeff = 1;
 431                         /*
 432                          * Round down to the nearest FAKE_NODE_MIN_SIZE.
 433                          * Command-line coefficients are in megabytes.
 434                          */
 435                         size = ((u64)num << 20) & FAKE_NODE_MIN_HASH_MASK;
 436                         if (size)
 437                                 for (i = 0; i < coeff; i++, num_nodes++)
 438                                         if (setup_node_range(num_nodes, nodes,
 439                                                 &addr, size, max_addr) < 0)
 440                                                 goto done;
 441                         if (!*cmdline)
 442                                 break;
 443                         coeff_flag = 0;
 444                         coeff = -1;
 445                 }
 446                 num = 0;
 447         }
 448 done:
 449         if (!num_nodes)
 450                 return -1;
 451         /* Fill remainder of system RAM, if appropriate. */
 452         if (addr < max_addr) {
 453                 if (coeff_flag && coeff < 0) {
 454                         /* Split remaining nodes into num-sized chunks */
 455                         num_nodes += split_nodes_by_size(nodes, &addr, max_addr,
 456                                                          num_nodes, num);
 457                         goto out;
 458                 }
 459                 switch (*(cmdline - 1)) {
 460                 case '*':
 461                         /* Split remaining nodes into coeff chunks */
 462                         if (coeff <= 0)
 463                                 break;
 464                         num_nodes += split_nodes_equally(nodes, &addr, max_addr,
 465                                                          num_nodes, coeff);
 466                         break;
 467                 case ',':
 468                         /* Do not allocate remaining system RAM */
 469                         break;
 470                 default:
 471                         /* Give one final node */
 472                         setup_node_range(num_nodes, nodes, &addr,
 473                                          max_addr - addr, max_addr);
 474                         num_nodes++;
 475                 }
 476         }
 477 out:
 478         memnode_shift = compute_hash_shift(nodes, num_nodes);
 479         if (memnode_shift < 0) {
 480                 memnode_shift = 0;
 481                 printk(KERN_ERR "No NUMA hash function found.  NUMA emulation "
 482                        "disabled.\n");
 483                 return -1;
 484         }
 485
 486         /*
 487          * We need to vacate all active ranges that may have been registered by
 488          * SRAT and set acpi_numa to -1 so that srat_disabled() always returns
 489          * true.  NUMA emulation has succeeded so we will not scan ACPI nodes.
 490          */
 491         remove_all_active_ranges();
 492 #ifdef CONFIG_ACPI_NUMA
 493         acpi_numa = -1;
 494 #endif
 495         for_each_node_mask(i, node_possible_map) {
 496                 e820_register_active_regions(i, nodes[i].start >> PAGE_SHIFT,
 497                                                 nodes[i].end >> PAGE_SHIFT);
 498                 setup_node_bootmem(i, nodes[i].start, nodes[i].end);
 499         }
 500         acpi_fake_nodes(nodes, num_nodes);
 501         numa_init_array();
 502         return 0;
 503 }
 504 #endif /* CONFIG_NUMA_EMU */
 505
 506 void __init numa_initmem_init(unsigned long start_pfn, unsigned long end_pfn)
 507 {
 508         int i;
 509
 510         nodes_clear(node_possible_map);
 511
 512 #ifdef CONFIG_NUMA_EMU
 513         if (cmdline && !numa_emulation(start_pfn, end_pfn))
 514                 return;
 515         nodes_clear(node_possible_map);
 516 #endif
 517
 518 #ifdef CONFIG_ACPI_NUMA
 519         if (!numa_off && !acpi_scan_nodes(start_pfn << PAGE_SHIFT,
 520                                           end_pfn << PAGE_SHIFT))
 521                 return;
 522         nodes_clear(node_possible_map);
 523 #endif
 524
 525 #ifdef CONFIG_K8_NUMA
 526         if (!numa_off && !k8_scan_nodes(start_pfn<<PAGE_SHIFT,
 527                                         end_pfn<<PAGE_SHIFT))
 528                 return;
 529         nodes_clear(node_possible_map);
 530 #endif
 531         printk(KERN_INFO "%s\n",
 532                numa_off ? "NUMA turned off" : "No NUMA configuration found");
 533
 534         printk(KERN_INFO "Faking a node at %016lx-%016lx\n",
 535                start_pfn << PAGE_SHIFT,
 536                end_pfn << PAGE_SHIFT);
 537         /* setup dummy node covering all memory */
 538         memnode_shift = 63;
 539         memnodemap = memnode.embedded_map;
 540         memnodemap[0] = 0;
 541         nodes_clear(node_online_map);
 542         node_set_online(0);
 543         node_set(0, node_possible_map);
 544         for (i = 0; i < NR_CPUS; i++)
 545                 numa_set_node(i, 0);
 546         node_to_cpumask_map[0] = cpumask_of_cpu(0);
 547         e820_register_active_regions(0, start_pfn, end_pfn);
 548         setup_node_bootmem(0, start_pfn << PAGE_SHIFT, end_pfn << PAGE_SHIFT);
 549 }
 550
 551 __cpuinit void numa_add_cpu(int cpu)
 552 {
 553         set_bit(cpu, (unsigned long *)&node_to_cpumask_map[cpu_to_node(cpu)]);
 554 }
 555
 556 void __cpuinit numa_set_node(int cpu, int node)
 557 {
 558         cpu_pda(cpu)->nodenumber = node;
 559         cpu_to_node_map[cpu] = node;
 560 }
 561
 562 unsigned long __init numa_free_all_bootmem(void)
 563 {
 564         unsigned long pages = 0;
 565         int i;
 566
 567         for_each_online_node(i)
 568                 pages += free_all_bootmem_node(NODE_DATA(i));
 569
 570         return pages;
 571 }
 572
 573 void __init paging_init(void)
 574 {
 575         unsigned long max_zone_pfns[MAX_NR_ZONES];
 576         int i;
 577
 578         memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
 579         max_zone_pfns[ZONE_DMA] = MAX_DMA_PFN;
 580         max_zone_pfns[ZONE_DMA32] = MAX_DMA32_PFN;
 581         max_zone_pfns[ZONE_NORMAL] = end_pfn;
 582
 583         sparse_memory_present_with_active_regions(MAX_NUMNODES);
 584         sparse_init();
 585
 586         for_each_online_node(i)
 587                 flat_setup_node_zones(i);
 588
 589         free_area_init_nodes(max_zone_pfns);
 590 }
 591
 592 static __init int numa_setup(char *opt)
 593 {
 594         if (!opt)
 595                 return -EINVAL;
 596         if (!strncmp(opt, "off", 3))
 597                 numa_off = 1;
 598 #ifdef CONFIG_NUMA_EMU
 599         if (!strncmp(opt, "fake=", 5))
 600                 cmdline = opt + 5;
 601 #endif
 602 #ifdef CONFIG_ACPI_NUMA
 603         if (!strncmp(opt, "noacpi", 6))
 604                 acpi_numa = -1;
 605         if (!strncmp(opt, "hotadd=", 7))
 606                 hotadd_percent = simple_strtoul(opt+7, NULL, 10);
 607 #endif
 608         return 0;
 609 }
 610 early_param("numa", numa_setup);
 611
 612 /*
 613  * Setup early cpu_to_node.
 614  *
 615  * Populate cpu_to_node[] only if x86_cpu_to_apicid[],
 616  * and apicid_to_node[] tables have valid entries for a CPU.
 617  * This means we skip cpu_to_node[] initialisation for NUMA
 618  * emulation and faking node case (when running a kernel compiled
 619  * for NUMA on a non NUMA box), which is OK as cpu_to_node[]
 620  * is already initialized in a round robin manner at numa_init_array,
 621  * prior to this call, and this initialization is good enough
 622  * for the fake NUMA cases.
 623  */
 624 void __init init_cpu_to_node(void)
 625 {
 626         int i;
 627
 628         for (i = 0; i < NR_CPUS; i++) {
 629                 u8 apicid = x86_cpu_to_apicid_init[i];
 630
 631                 if (apicid == BAD_APICID)
 632                         continue;
 633                 if (apicid_to_node[apicid] == NUMA_NO_NODE)
 634                         continue;
 635                 numa_set_node(i, apicid_to_node[apicid]);
 636         }
 637 }
 638
 639