lib/librte_eal/linux/eal/eal_memory.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2014 Intel Corporation.
   3  * Copyright(c) 2013 6WIND S.A.
   4  */
   5
   6 #define _FILE_OFFSET_BITS 64
   7 #include <errno.h>
   8 #include <fcntl.h>
   9 #include <stdarg.h>
  10 #include <stdbool.h>
  11 #include <stdlib.h>
  12 #include <stdio.h>
  13 #include <stdint.h>
  14 #include <inttypes.h>
  15 #include <string.h>
  16 #include <sys/mman.h>
  17 #include <sys/types.h>
  18 #include <sys/stat.h>
  19 #include <sys/queue.h>
  20 #include <sys/file.h>
  21 #include <sys/resource.h>
  22 #include <unistd.h>
  23 #include <limits.h>
  24 #include <sys/ioctl.h>
  25 #include <sys/time.h>
  26 #include <signal.h>
  27 #include <setjmp.h>
  28 #ifdef F_ADD_SEALS /* if file sealing is supported, so is memfd */
  29 #include <linux/memfd.h>
  30 #define MEMFD_SUPPORTED
  31 #endif
  32 #ifdef RTE_EAL_NUMA_AWARE_HUGEPAGES
  33 #include <numa.h>
  34 #include <numaif.h>
  35 #endif
  36
  37 #include <rte_errno.h>
  38 #include <rte_log.h>
  39 #include <rte_memory.h>
  40 #include <rte_launch.h>
  41 #include <rte_eal.h>
  42 #include <rte_eal_memconfig.h>
  43 #include <rte_per_lcore.h>
  44 #include <rte_lcore.h>
  45 #include <rte_common.h>
  46 #include <rte_string_fns.h>
  47
  48 #include "eal_private.h"
  49 #include "eal_memalloc.h"
  50 #include "eal_internal_cfg.h"
  51 #include "eal_filesystem.h"
  52 #include "eal_hugepages.h"
  53 #include "eal_options.h"
  54
  55 #define PFN_MASK_SIZE   8
  56
  57 /**
  58  * @file
  59  * Huge page mapping under linux
  60  *
  61  * To reserve a big contiguous amount of memory, we use the hugepage
  62  * feature of linux. For that, we need to have hugetlbfs mounted. This
  63  * code will create many files in this directory (one per page) and
  64  * map them in virtual memory. For each page, we will retrieve its
  65  * physical address and remap it in order to have a virtual contiguous
  66  * zone as well as a physical contiguous zone.
  67  */
  68
  69 static bool phys_addrs_available = true;
  70
  71 #define RANDOMIZE_VA_SPACE_FILE "/proc/sys/kernel/randomize_va_space"
  72
  73 static void
  74 test_phys_addrs_available(void)
  75 {
  76         uint64_t tmp = 0;
  77         phys_addr_t physaddr;
  78
  79         if (!rte_eal_has_hugepages()) {
  80                 RTE_LOG(ERR, EAL,
  81                         "Started without hugepages support, physical addresses not available\n");
  82                 phys_addrs_available = false;
  83                 return;
  84         }
  85
  86         physaddr = rte_mem_virt2phy(&tmp);
  87         if (physaddr == RTE_BAD_PHYS_ADDR) {
  88                 if (rte_eal_iova_mode() == RTE_IOVA_PA)
  89                         RTE_LOG(ERR, EAL,
  90                                 "Cannot obtain physical addresses: %s. "
  91                                 "Only vfio will function.\n",
  92                                 strerror(errno));
  93                 phys_addrs_available = false;
  94         }
  95 }
  96
  97 /*
  98  * Get physical address of any mapped virtual address in the current process.
  99  */
 100 phys_addr_t
 101 rte_mem_virt2phy(const void *virtaddr)
 102 {
 103         int fd, retval;
 104         uint64_t page, physaddr;
 105         unsigned long virt_pfn;
 106         int page_size;
 107         off_t offset;
 108
 109         /* Cannot parse /proc/self/pagemap, no need to log errors everywhere */
 110         if (!phys_addrs_available)
 111                 return RTE_BAD_IOVA;
 112
 113         /* standard page size */
 114         page_size = getpagesize();
 115
 116         fd = open("/proc/self/pagemap", O_RDONLY);
 117         if (fd < 0) {
 118                 RTE_LOG(INFO, EAL, "%s(): cannot open /proc/self/pagemap: %s\n",
 119                         __func__, strerror(errno));
 120                 return RTE_BAD_IOVA;
 121         }
 122
 123         virt_pfn = (unsigned long)virtaddr / page_size;
 124         offset = sizeof(uint64_t) * virt_pfn;
 125         if (lseek(fd, offset, SEEK_SET) == (off_t) -1) {
 126                 RTE_LOG(INFO, EAL, "%s(): seek error in /proc/self/pagemap: %s\n",
 127                                 __func__, strerror(errno));
 128                 close(fd);
 129                 return RTE_BAD_IOVA;
 130         }
 131
 132         retval = read(fd, &page, PFN_MASK_SIZE);
 133         close(fd);
 134         if (retval < 0) {
 135                 RTE_LOG(INFO, EAL, "%s(): cannot read /proc/self/pagemap: %s\n",
 136                                 __func__, strerror(errno));
 137                 return RTE_BAD_IOVA;
 138         } else if (retval != PFN_MASK_SIZE) {
 139                 RTE_LOG(INFO, EAL, "%s(): read %d bytes from /proc/self/pagemap "
 140                                 "but expected %d:\n",
 141                                 __func__, retval, PFN_MASK_SIZE);
 142                 return RTE_BAD_IOVA;
 143         }
 144
 145         /*
 146          * the pfn (page frame number) are bits 0-54 (see
 147          * pagemap.txt in linux Documentation)
 148          */
 149         if ((page & 0x7fffffffffffffULL) == 0)
 150                 return RTE_BAD_IOVA;
 151
 152         physaddr = ((page & 0x7fffffffffffffULL) * page_size)
 153                 + ((unsigned long)virtaddr % page_size);
 154
 155         return physaddr;
 156 }
 157
 158 rte_iova_t
 159 rte_mem_virt2iova(const void *virtaddr)
 160 {
 161         if (rte_eal_iova_mode() == RTE_IOVA_VA)
 162                 return (uintptr_t)virtaddr;
 163         return rte_mem_virt2phy(virtaddr);
 164 }
 165
 166 /*
 167  * For each hugepage in hugepg_tbl, fill the physaddr value. We find
 168  * it by browsing the /proc/self/pagemap special file.
 169  */
 170 static int
 171 find_physaddrs(struct hugepage_file *hugepg_tbl, struct hugepage_info *hpi)
 172 {
 173         unsigned int i;
 174         phys_addr_t addr;
 175
 176         for (i = 0; i < hpi->num_pages[0]; i++) {
 177                 addr = rte_mem_virt2phy(hugepg_tbl[i].orig_va);
 178                 if (addr == RTE_BAD_PHYS_ADDR)
 179                         return -1;
 180                 hugepg_tbl[i].physaddr = addr;
 181         }
 182         return 0;
 183 }
 184
 185 /*
 186  * For each hugepage in hugepg_tbl, fill the physaddr value sequentially.
 187  */
 188 static int
 189 set_physaddrs(struct hugepage_file *hugepg_tbl, struct hugepage_info *hpi)
 190 {
 191         unsigned int i;
 192         static phys_addr_t addr;
 193
 194         for (i = 0; i < hpi->num_pages[0]; i++) {
 195                 hugepg_tbl[i].physaddr = addr;
 196                 addr += hugepg_tbl[i].size;
 197         }
 198         return 0;
 199 }
 200
 201 /*
 202  * Check whether address-space layout randomization is enabled in
 203  * the kernel. This is important for multi-process as it can prevent
 204  * two processes mapping data to the same virtual address
 205  * Returns:
 206  *    0 - address space randomization disabled
 207  *    1/2 - address space randomization enabled
 208  *    negative error code on error
 209  */
 210 static int
 211 aslr_enabled(void)
 212 {
 213         char c;
 214         int retval, fd = open(RANDOMIZE_VA_SPACE_FILE, O_RDONLY);
 215         if (fd < 0)
 216                 return -errno;
 217         retval = read(fd, &c, 1);
 218         close(fd);
 219         if (retval < 0)
 220                 return -errno;
 221         if (retval == 0)
 222                 return -EIO;
 223         switch (c) {
 224                 case '0' : return 0;
 225                 case '1' : return 1;
 226                 case '2' : return 2;
 227                 default: return -EINVAL;
 228         }
 229 }
 230
 231 static sigjmp_buf huge_jmpenv;
 232
 233 static void huge_sigbus_handler(int signo __rte_unused)
 234 {
 235         siglongjmp(huge_jmpenv, 1);
 236 }
 237
 238 /* Put setjmp into a wrap method to avoid compiling error. Any non-volatile,
 239  * non-static local variable in the stack frame calling sigsetjmp might be
 240  * clobbered by a call to longjmp.
 241  */
 242 static int huge_wrap_sigsetjmp(void)
 243 {
 244         return sigsetjmp(huge_jmpenv, 1);
 245 }
 246
 247 #ifdef RTE_EAL_NUMA_AWARE_HUGEPAGES
 248 /* Callback for numa library. */
 249 void numa_error(char *where)
 250 {
 251         RTE_LOG(ERR, EAL, "%s failed: %s\n", where, strerror(errno));
 252 }
 253 #endif
 254
 255 /*
 256  * Mmap all hugepages of hugepage table: it first open a file in
 257  * hugetlbfs, then mmap() hugepage_sz data in it. If orig is set, the
 258  * virtual address is stored in hugepg_tbl[i].orig_va, else it is stored
 259  * in hugepg_tbl[i].final_va. The second mapping (when orig is 0) tries to
 260  * map contiguous physical blocks in contiguous virtual blocks.
 261  */
 262 static unsigned
 263 map_all_hugepages(struct hugepage_file *hugepg_tbl, struct hugepage_info *hpi,
 264                   uint64_t *essential_memory __rte_unused)
 265 {
 266         int fd;
 267         unsigned i;
 268         void *virtaddr;
 269 #ifdef RTE_EAL_NUMA_AWARE_HUGEPAGES
 270         int node_id = -1;
 271         int essential_prev = 0;
 272         int oldpolicy;
 273         struct bitmask *oldmask = NULL;
 274         bool have_numa = true;
 275         unsigned long maxnode = 0;
 276
 277         /* Check if kernel supports NUMA. */
 278         if (numa_available() != 0) {
 279                 RTE_LOG(DEBUG, EAL, "NUMA is not supported.\n");
 280                 have_numa = false;
 281         }
 282
 283         if (have_numa) {
 284                 RTE_LOG(DEBUG, EAL, "Trying to obtain current memory policy.\n");
 285                 oldmask = numa_allocate_nodemask();
 286                 if (get_mempolicy(&oldpolicy, oldmask->maskp,
 287                                   oldmask->size + 1, 0, 0) < 0) {
 288                         RTE_LOG(ERR, EAL,
 289                                 "Failed to get current mempolicy: %s. "
 290                                 "Assuming MPOL_DEFAULT.\n", strerror(errno));
 291                         oldpolicy = MPOL_DEFAULT;
 292                 }
 293                 for (i = 0; i < RTE_MAX_NUMA_NODES; i++)
 294                         if (internal_config.socket_mem[i])
 295                                 maxnode = i + 1;
 296         }
 297 #endif
 298
 299         for (i = 0; i < hpi->num_pages[0]; i++) {
 300                 struct hugepage_file *hf = &hugepg_tbl[i];
 301                 uint64_t hugepage_sz = hpi->hugepage_sz;
 302
 303 #ifdef RTE_EAL_NUMA_AWARE_HUGEPAGES
 304                 if (maxnode) {
 305                         unsigned int j;
 306
 307                         for (j = 0; j < maxnode; j++)
 308                                 if (essential_memory[j])
 309                                         break;
 310
 311                         if (j == maxnode) {
 312                                 node_id = (node_id + 1) % maxnode;
 313                                 while (!internal_config.socket_mem[node_id]) {
 314                                         node_id++;
 315                                         node_id %= maxnode;
 316                                 }
 317                                 essential_prev = 0;
 318                         } else {
 319                                 node_id = j;
 320                                 essential_prev = essential_memory[j];
 321
 322                                 if (essential_memory[j] < hugepage_sz)
 323                                         essential_memory[j] = 0;
 324                                 else
 325                                         essential_memory[j] -= hugepage_sz;
 326                         }
 327
 328                         RTE_LOG(DEBUG, EAL,
 329                                 "Setting policy MPOL_PREFERRED for socket %d\n",
 330                                 node_id);
 331                         numa_set_preferred(node_id);
 332                 }
 333 #endif
 334
 335                 hf->file_id = i;
 336                 hf->size = hugepage_sz;
 337                 eal_get_hugefile_path(hf->filepath, sizeof(hf->filepath),
 338                                 hpi->hugedir, hf->file_id);
 339                 hf->filepath[sizeof(hf->filepath) - 1] = '\0';
 340
 341                 /* try to create hugepage file */
 342                 fd = open(hf->filepath, O_CREAT | O_RDWR, 0600);
 343                 if (fd < 0) {
 344                         RTE_LOG(DEBUG, EAL, "%s(): open failed: %s\n", __func__,
 345                                         strerror(errno));
 346                         goto out;
 347                 }
 348
 349                 /* map the segment, and populate page tables,
 350                  * the kernel fills this segment with zeros. we don't care where
 351                  * this gets mapped - we already have contiguous memory areas
 352                  * ready for us to map into.
 353                  */
 354                 virtaddr = mmap(NULL, hugepage_sz, PROT_READ | PROT_WRITE,
 355                                 MAP_SHARED | MAP_POPULATE, fd, 0);
 356                 if (virtaddr == MAP_FAILED) {
 357                         RTE_LOG(DEBUG, EAL, "%s(): mmap failed: %s\n", __func__,
 358                                         strerror(errno));
 359                         close(fd);
 360                         goto out;
 361                 }
 362
 363                 hf->orig_va = virtaddr;
 364
 365                 /* In linux, hugetlb limitations, like cgroup, are
 366                  * enforced at fault time instead of mmap(), even
 367                  * with the option of MAP_POPULATE. Kernel will send
 368                  * a SIGBUS signal. To avoid to be killed, save stack
 369                  * environment here, if SIGBUS happens, we can jump
 370                  * back here.
 371                  */
 372                 if (huge_wrap_sigsetjmp()) {
 373                         RTE_LOG(DEBUG, EAL, "SIGBUS: Cannot mmap more "
 374                                 "hugepages of size %u MB\n",
 375                                 (unsigned int)(hugepage_sz / 0x100000));
 376                         munmap(virtaddr, hugepage_sz);
 377                         close(fd);
 378                         unlink(hugepg_tbl[i].filepath);
 379 #ifdef RTE_EAL_NUMA_AWARE_HUGEPAGES
 380                         if (maxnode)
 381                                 essential_memory[node_id] =
 382                                         essential_prev;
 383 #endif
 384                         goto out;
 385                 }
 386                 *(int *)virtaddr = 0;
 387
 388                 /* set shared lock on the file. */
 389                 if (flock(fd, LOCK_SH) < 0) {
 390                         RTE_LOG(DEBUG, EAL, "%s(): Locking file failed:%s \n",
 391                                 __func__, strerror(errno));
 392                         close(fd);
 393                         goto out;
 394                 }
 395
 396                 close(fd);
 397         }
 398
 399 out:
 400 #ifdef RTE_EAL_NUMA_AWARE_HUGEPAGES
 401         if (maxnode) {
 402                 RTE_LOG(DEBUG, EAL,
 403                         "Restoring previous memory policy: %d\n", oldpolicy);
 404                 if (oldpolicy == MPOL_DEFAULT) {
 405                         numa_set_localalloc();
 406                 } else if (set_mempolicy(oldpolicy, oldmask->maskp,
 407                                          oldmask->size + 1) < 0) {
 408                         RTE_LOG(ERR, EAL, "Failed to restore mempolicy: %s\n",
 409                                 strerror(errno));
 410                         numa_set_localalloc();
 411                 }
 412         }
 413         if (oldmask != NULL)
 414                 numa_free_cpumask(oldmask);
 415 #endif
 416         return i;
 417 }
 418
 419 /*
 420  * Parse /proc/self/numa_maps to get the NUMA socket ID for each huge
 421  * page.
 422  */
 423 static int
 424 find_numasocket(struct hugepage_file *hugepg_tbl, struct hugepage_info *hpi)
 425 {
 426         int socket_id;
 427         char *end, *nodestr;
 428         unsigned i, hp_count = 0;
 429         uint64_t virt_addr;
 430         char buf[BUFSIZ];
 431         char hugedir_str[PATH_MAX];
 432         FILE *f;
 433
 434         f = fopen("/proc/self/numa_maps", "r");
 435         if (f == NULL) {
 436                 RTE_LOG(NOTICE, EAL, "NUMA support not available"
 437                         " consider that all memory is in socket_id 0\n");
 438                 return 0;
 439         }
 440
 441         snprintf(hugedir_str, sizeof(hugedir_str),
 442                         "%s/%s", hpi->hugedir, eal_get_hugefile_prefix());
 443
 444         /* parse numa map */
 445         while (fgets(buf, sizeof(buf), f) != NULL) {
 446
 447                 /* ignore non huge page */
 448                 if (strstr(buf, " huge ") == NULL &&
 449                                 strstr(buf, hugedir_str) == NULL)
 450                         continue;
 451
 452                 /* get zone addr */
 453                 virt_addr = strtoull(buf, &end, 16);
 454                 if (virt_addr == 0 || end == buf) {
 455                         RTE_LOG(ERR, EAL, "%s(): error in numa_maps parsing\n", __func__);
 456                         goto error;
 457                 }
 458
 459                 /* get node id (socket id) */
 460                 nodestr = strstr(buf, " N");
 461                 if (nodestr == NULL) {
 462                         RTE_LOG(ERR, EAL, "%s(): error in numa_maps parsing\n", __func__);
 463                         goto error;
 464                 }
 465                 nodestr += 2;
 466                 end = strstr(nodestr, "=");
 467                 if (end == NULL) {
 468                         RTE_LOG(ERR, EAL, "%s(): error in numa_maps parsing\n", __func__);
 469                         goto error;
 470                 }
 471                 end[0] = '\0';
 472                 end = NULL;
 473
 474                 socket_id = strtoul(nodestr, &end, 0);
 475                 if ((nodestr[0] == '\0') || (end == NULL) || (*end != '\0')) {
 476                         RTE_LOG(ERR, EAL, "%s(): error in numa_maps parsing\n", __func__);
 477                         goto error;
 478                 }
 479
 480                 /* if we find this page in our mappings, set socket_id */
 481                 for (i = 0; i < hpi->num_pages[0]; i++) {
 482                         void *va = (void *)(unsigned long)virt_addr;
 483                         if (hugepg_tbl[i].orig_va == va) {
 484                                 hugepg_tbl[i].socket_id = socket_id;
 485                                 hp_count++;
 486 #ifdef RTE_EAL_NUMA_AWARE_HUGEPAGES
 487                                 RTE_LOG(DEBUG, EAL,
 488                                         "Hugepage %s is on socket %d\n",
 489                                         hugepg_tbl[i].filepath, socket_id);
 490 #endif
 491                         }
 492                 }
 493         }
 494
 495         if (hp_count < hpi->num_pages[0])
 496                 goto error;
 497
 498         fclose(f);
 499         return 0;
 500
 501 error:
 502         fclose(f);
 503         return -1;
 504 }
 505
 506 static int
 507 cmp_physaddr(const void *a, const void *b)
 508 {
 509 #ifndef RTE_ARCH_PPC_64
 510         const struct hugepage_file *p1 = a;
 511         const struct hugepage_file *p2 = b;
 512 #else
 513         /* PowerPC needs memory sorted in reverse order from x86 */
 514         const struct hugepage_file *p1 = b;
 515         const struct hugepage_file *p2 = a;
 516 #endif
 517         if (p1->physaddr < p2->physaddr)
 518                 return -1;
 519         else if (p1->physaddr > p2->physaddr)
 520                 return 1;
 521         else
 522                 return 0;
 523 }
 524
 525 /*
 526  * Uses mmap to create a shared memory area for storage of data
 527  * Used in this file to store the hugepage file map on disk
 528  */
 529 static void *
 530 create_shared_memory(const char *filename, const size_t mem_size)
 531 {
 532         void *retval;
 533         int fd;
 534
 535         /* if no shared files mode is used, create anonymous memory instead */
 536         if (internal_config.no_shconf) {
 537                 retval = mmap(NULL, mem_size, PROT_READ | PROT_WRITE,
 538                                 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
 539                 if (retval == MAP_FAILED)
 540                         return NULL;
 541                 return retval;
 542         }
 543
 544         fd = open(filename, O_CREAT | O_RDWR, 0600);
 545         if (fd < 0)
 546                 return NULL;
 547         if (ftruncate(fd, mem_size) < 0) {
 548                 close(fd);
 549                 return NULL;
 550         }
 551         retval = mmap(NULL, mem_size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
 552         close(fd);
 553         if (retval == MAP_FAILED)
 554                 return NULL;
 555         return retval;
 556 }
 557
 558 /*
 559  * this copies *active* hugepages from one hugepage table to another.
 560  * destination is typically the shared memory.
 561  */
 562 static int
 563 copy_hugepages_to_shared_mem(struct hugepage_file * dst, int dest_size,
 564                 const struct hugepage_file * src, int src_size)
 565 {
 566         int src_pos, dst_pos = 0;
 567
 568         for (src_pos = 0; src_pos < src_size; src_pos++) {
 569                 if (src[src_pos].orig_va != NULL) {
 570                         /* error on overflow attempt */
 571                         if (dst_pos == dest_size)
 572                                 return -1;
 573                         memcpy(&dst[dst_pos], &src[src_pos], sizeof(struct hugepage_file));
 574                         dst_pos++;
 575                 }
 576         }
 577         return 0;
 578 }
 579
 580 static int
 581 unlink_hugepage_files(struct hugepage_file *hugepg_tbl,
 582                 unsigned num_hp_info)
 583 {
 584         unsigned socket, size;
 585         int page, nrpages = 0;
 586
 587         /* get total number of hugepages */
 588         for (size = 0; size < num_hp_info; size++)
 589                 for (socket = 0; socket < RTE_MAX_NUMA_NODES; socket++)
 590                         nrpages +=
 591                         internal_config.hugepage_info[size].num_pages[socket];
 592
 593         for (page = 0; page < nrpages; page++) {
 594                 struct hugepage_file *hp = &hugepg_tbl[page];
 595
 596                 if (hp->orig_va != NULL && unlink(hp->filepath)) {
 597                         RTE_LOG(WARNING, EAL, "%s(): Removing %s failed: %s\n",
 598                                 __func__, hp->filepath, strerror(errno));
 599                 }
 600         }
 601         return 0;
 602 }
 603
 604 /*
 605  * unmaps hugepages that are not going to be used. since we originally allocate
 606  * ALL hugepages (not just those we need), additional unmapping needs to be done.
 607  */
 608 static int
 609 unmap_unneeded_hugepages(struct hugepage_file *hugepg_tbl,
 610                 struct hugepage_info *hpi,
 611                 unsigned num_hp_info)
 612 {
 613         unsigned socket, size;
 614         int page, nrpages = 0;
 615
 616         /* get total number of hugepages */
 617         for (size = 0; size < num_hp_info; size++)
 618                 for (socket = 0; socket < RTE_MAX_NUMA_NODES; socket++)
 619                         nrpages += internal_config.hugepage_info[size].num_pages[socket];
 620
 621         for (size = 0; size < num_hp_info; size++) {
 622                 for (socket = 0; socket < RTE_MAX_NUMA_NODES; socket++) {
 623                         unsigned pages_found = 0;
 624
 625                         /* traverse until we have unmapped all the unused pages */
 626                         for (page = 0; page < nrpages; page++) {
 627                                 struct hugepage_file *hp = &hugepg_tbl[page];
 628
 629                                 /* find a page that matches the criteria */
 630                                 if ((hp->size == hpi[size].hugepage_sz) &&
 631                                                 (hp->socket_id == (int) socket)) {
 632
 633                                         /* if we skipped enough pages, unmap the rest */
 634                                         if (pages_found == hpi[size].num_pages[socket]) {
 635                                                 uint64_t unmap_len;
 636
 637                                                 unmap_len = hp->size;
 638
 639                                                 /* get start addr and len of the remaining segment */
 640                                                 munmap(hp->orig_va,
 641                                                         (size_t)unmap_len);
 642
 643                                                 hp->orig_va = NULL;
 644                                                 if (unlink(hp->filepath) == -1) {
 645                                                         RTE_LOG(ERR, EAL, "%s(): Removing %s failed: %s\n",
 646                                                                         __func__, hp->filepath, strerror(errno));
 647                                                         return -1;
 648                                                 }
 649                                         } else {
 650                                                 /* lock the page and skip */
 651                                                 pages_found++;
 652                                         }
 653
 654                                 } /* match page */
 655                         } /* foreach page */
 656                 } /* foreach socket */
 657         } /* foreach pagesize */
 658
 659         return 0;
 660 }
 661
 662 static int
 663 remap_segment(struct hugepage_file *hugepages, int seg_start, int seg_end)
 664 {
 665         struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
 666         struct rte_memseg_list *msl;
 667         struct rte_fbarray *arr;
 668         int cur_page, seg_len;
 669         unsigned int msl_idx;
 670         int ms_idx;
 671         uint64_t page_sz;
 672         size_t memseg_len;
 673         int socket_id;
 674
 675         page_sz = hugepages[seg_start].size;
 676         socket_id = hugepages[seg_start].socket_id;
 677         seg_len = seg_end - seg_start;
 678
 679         RTE_LOG(DEBUG, EAL, "Attempting to map %" PRIu64 "M on socket %i\n",
 680                         (seg_len * page_sz) >> 20ULL, socket_id);
 681
 682         /* find free space in memseg lists */
 683         for (msl_idx = 0; msl_idx < RTE_MAX_MEMSEG_LISTS; msl_idx++) {
 684                 bool empty;
 685                 msl = &mcfg->memsegs[msl_idx];
 686                 arr = &msl->memseg_arr;
 687
 688                 if (msl->page_sz != page_sz)
 689                         continue;
 690                 if (msl->socket_id != socket_id)
 691                         continue;
 692
 693                 /* leave space for a hole if array is not empty */
 694                 empty = arr->count == 0;
 695                 ms_idx = rte_fbarray_find_next_n_free(arr, 0,
 696                                 seg_len + (empty ? 0 : 1));
 697
 698                 /* memseg list is full? */
 699                 if (ms_idx < 0)
 700                         continue;
 701
 702                 /* leave some space between memsegs, they are not IOVA
 703                  * contiguous, so they shouldn't be VA contiguous either.
 704                  */
 705                 if (!empty)
 706                         ms_idx++;
 707                 break;
 708         }
 709         if (msl_idx == RTE_MAX_MEMSEG_LISTS) {
 710                 RTE_LOG(ERR, EAL, "Could not find space for memseg. Please increase %s and/or %s in configuration.\n",
 711                                 RTE_STR(CONFIG_RTE_MAX_MEMSEG_PER_TYPE),
 712                                 RTE_STR(CONFIG_RTE_MAX_MEM_PER_TYPE));
 713                 return -1;
 714         }
 715
 716 #ifdef RTE_ARCH_PPC64
 717         /* for PPC64 we go through the list backwards */
 718         for (cur_page = seg_end - 1; cur_page >= seg_start;
 719                         cur_page--, ms_idx++) {
 720 #else
 721         for (cur_page = seg_start; cur_page < seg_end; cur_page++, ms_idx++) {
 722 #endif
 723                 struct hugepage_file *hfile = &hugepages[cur_page];
 724                 struct rte_memseg *ms = rte_fbarray_get(arr, ms_idx);
 725                 void *addr;
 726                 int fd;
 727
 728                 fd = open(hfile->filepath, O_RDWR);
 729                 if (fd < 0) {
 730                         RTE_LOG(ERR, EAL, "Could not open '%s': %s\n",
 731                                         hfile->filepath, strerror(errno));
 732                         return -1;
 733                 }
 734                 /* set shared lock on the file. */
 735                 if (flock(fd, LOCK_SH) < 0) {
 736                         RTE_LOG(DEBUG, EAL, "Could not lock '%s': %s\n",
 737                                         hfile->filepath, strerror(errno));
 738                         close(fd);
 739                         return -1;
 740                 }
 741                 memseg_len = (size_t)page_sz;
 742                 addr = RTE_PTR_ADD(msl->base_va, ms_idx * memseg_len);
 743
 744                 /* we know this address is already mmapped by memseg list, so
 745                  * using MAP_FIXED here is safe
 746                  */
 747                 addr = mmap(addr, page_sz, PROT_READ | PROT_WRITE,
 748                                 MAP_SHARED | MAP_POPULATE | MAP_FIXED, fd, 0);
 749                 if (addr == MAP_FAILED) {
 750                         RTE_LOG(ERR, EAL, "Couldn't remap '%s': %s\n",
 751                                         hfile->filepath, strerror(errno));
 752                         close(fd);
 753                         return -1;
 754                 }
 755
 756                 /* we have a new address, so unmap previous one */
 757 #ifndef RTE_ARCH_64
 758                 /* in 32-bit legacy mode, we have already unmapped the page */
 759                 if (!internal_config.legacy_mem)
 760                         munmap(hfile->orig_va, page_sz);
 761 #else
 762                 munmap(hfile->orig_va, page_sz);
 763 #endif
 764
 765                 hfile->orig_va = NULL;
 766                 hfile->final_va = addr;
 767
 768                 /* rewrite physical addresses in IOVA as VA mode */
 769                 if (rte_eal_iova_mode() == RTE_IOVA_VA)
 770                         hfile->physaddr = (uintptr_t)addr;
 771
 772                 /* set up memseg data */
 773                 ms->addr = addr;
 774                 ms->hugepage_sz = page_sz;
 775                 ms->len = memseg_len;
 776                 ms->iova = hfile->physaddr;
 777                 ms->socket_id = hfile->socket_id;
 778                 ms->nchannel = rte_memory_get_nchannel();
 779                 ms->nrank = rte_memory_get_nrank();
 780
 781                 rte_fbarray_set_used(arr, ms_idx);
 782
 783                 /* store segment fd internally */
 784                 if (eal_memalloc_set_seg_fd(msl_idx, ms_idx, fd) < 0)
 785                         RTE_LOG(ERR, EAL, "Could not store segment fd: %s\n",
 786                                 rte_strerror(rte_errno));
 787         }
 788         RTE_LOG(DEBUG, EAL, "Allocated %" PRIu64 "M on socket %i\n",
 789                         (seg_len * page_sz) >> 20, socket_id);
 790         return 0;
 791 }
 792
 793 static uint64_t
 794 get_mem_amount(uint64_t page_sz, uint64_t max_mem)
 795 {
 796         uint64_t area_sz, max_pages;
 797
 798         /* limit to RTE_MAX_MEMSEG_PER_LIST pages or RTE_MAX_MEM_MB_PER_LIST */
 799         max_pages = RTE_MAX_MEMSEG_PER_LIST;
 800         max_mem = RTE_MIN((uint64_t)RTE_MAX_MEM_MB_PER_LIST << 20, max_mem);
 801
 802         area_sz = RTE_MIN(page_sz * max_pages, max_mem);
 803
 804         /* make sure the list isn't smaller than the page size */
 805         area_sz = RTE_MAX(area_sz, page_sz);
 806
 807         return RTE_ALIGN(area_sz, page_sz);
 808 }
 809
 810 static int
 811 free_memseg_list(struct rte_memseg_list *msl)
 812 {
 813         if (rte_fbarray_destroy(&msl->memseg_arr)) {
 814                 RTE_LOG(ERR, EAL, "Cannot destroy memseg list\n");
 815                 return -1;
 816         }
 817         memset(msl, 0, sizeof(*msl));
 818         return 0;
 819 }
 820
 821 #define MEMSEG_LIST_FMT "memseg-%" PRIu64 "k-%i-%i"
 822 static int
 823 alloc_memseg_list(struct rte_memseg_list *msl, uint64_t page_sz,
 824                 int n_segs, int socket_id, int type_msl_idx)
 825 {
 826         char name[RTE_FBARRAY_NAME_LEN];
 827
 828         snprintf(name, sizeof(name), MEMSEG_LIST_FMT, page_sz >> 10, socket_id,
 829                  type_msl_idx);
 830         if (rte_fbarray_init(&msl->memseg_arr, name, n_segs,
 831                         sizeof(struct rte_memseg))) {
 832                 RTE_LOG(ERR, EAL, "Cannot allocate memseg list: %s\n",
 833                         rte_strerror(rte_errno));
 834                 return -1;
 835         }
 836
 837         msl->page_sz = page_sz;
 838         msl->socket_id = socket_id;
 839         msl->base_va = NULL;
 840
 841         RTE_LOG(DEBUG, EAL, "Memseg list allocated: 0x%zxkB at socket %i\n",
 842                         (size_t)page_sz >> 10, socket_id);
 843
 844         return 0;
 845 }
 846
 847 static int
 848 alloc_va_space(struct rte_memseg_list *msl)
 849 {
 850         uint64_t page_sz;
 851         size_t mem_sz;
 852         void *addr;
 853         int flags = 0;
 854
 855         page_sz = msl->page_sz;
 856         mem_sz = page_sz * msl->memseg_arr.len;
 857
 858         addr = eal_get_virtual_area(msl->base_va, &mem_sz, page_sz, 0, flags);
 859         if (addr == NULL) {
 860                 if (rte_errno == EADDRNOTAVAIL)
 861                         RTE_LOG(ERR, EAL, "Could not mmap %llu bytes at [%p] - please use '--base-virtaddr' option\n",
 862                                 (unsigned long long)mem_sz, msl->base_va);
 863                 else
 864                         RTE_LOG(ERR, EAL, "Cannot reserve memory\n");
 865                 return -1;
 866         }
 867         msl->base_va = addr;
 868         msl->len = mem_sz;
 869
 870         return 0;
 871 }
 872
 873 /*
 874  * Our VA space is not preallocated yet, so preallocate it here. We need to know
 875  * how many segments there are in order to map all pages into one address space,
 876  * and leave appropriate holes between segments so that rte_malloc does not
 877  * concatenate them into one big segment.
 878  *
 879  * we also need to unmap original pages to free up address space.
 880  */
 881 static int __rte_unused
 882 prealloc_segments(struct hugepage_file *hugepages, int n_pages)
 883 {
 884         struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
 885         int cur_page, seg_start_page, end_seg, new_memseg;
 886         unsigned int hpi_idx, socket, i;
 887         int n_contig_segs, n_segs;
 888         int msl_idx;
 889
 890         /* before we preallocate segments, we need to free up our VA space.
 891          * we're not removing files, and we already have information about
 892          * PA-contiguousness, so it is safe to unmap everything.
 893          */
 894         for (cur_page = 0; cur_page < n_pages; cur_page++) {
 895                 struct hugepage_file *hpi = &hugepages[cur_page];
 896                 munmap(hpi->orig_va, hpi->size);
 897                 hpi->orig_va = NULL;
 898         }
 899
 900         /* we cannot know how many page sizes and sockets we have discovered, so
 901          * loop over all of them
 902          */
 903         for (hpi_idx = 0; hpi_idx < internal_config.num_hugepage_sizes;
 904                         hpi_idx++) {
 905                 uint64_t page_sz =
 906                         internal_config.hugepage_info[hpi_idx].hugepage_sz;
 907
 908                 for (i = 0; i < rte_socket_count(); i++) {
 909                         struct rte_memseg_list *msl;
 910
 911                         socket = rte_socket_id_by_idx(i);
 912                         n_contig_segs = 0;
 913                         n_segs = 0;
 914                         seg_start_page = -1;
 915
 916                         for (cur_page = 0; cur_page < n_pages; cur_page++) {
 917                                 struct hugepage_file *prev, *cur;
 918                                 int prev_seg_start_page = -1;
 919
 920                                 cur = &hugepages[cur_page];
 921                                 prev = cur_page == 0 ? NULL :
 922                                                 &hugepages[cur_page - 1];
 923
 924                                 new_memseg = 0;
 925                                 end_seg = 0;
 926
 927                                 if (cur->size == 0)
 928                                         end_seg = 1;
 929                                 else if (cur->socket_id != (int) socket)
 930                                         end_seg = 1;
 931                                 else if (cur->size != page_sz)
 932                                         end_seg = 1;
 933                                 else if (cur_page == 0)
 934                                         new_memseg = 1;
 935 #ifdef RTE_ARCH_PPC_64
 936                                 /* On PPC64 architecture, the mmap always start
 937                                  * from higher address to lower address. Here,
 938                                  * physical addresses are in descending order.
 939                                  */
 940                                 else if ((prev->physaddr - cur->physaddr) !=
 941                                                 cur->size)
 942                                         new_memseg = 1;
 943 #else
 944                                 else if ((cur->physaddr - prev->physaddr) !=
 945                                                 cur->size)
 946                                         new_memseg = 1;
 947 #endif
 948                                 if (new_memseg) {
 949                                         /* if we're already inside a segment,
 950                                          * new segment means end of current one
 951                                          */
 952                                         if (seg_start_page != -1) {
 953                                                 end_seg = 1;
 954                                                 prev_seg_start_page =
 955                                                                 seg_start_page;
 956                                         }
 957                                         seg_start_page = cur_page;
 958                                 }
 959
 960                                 if (end_seg) {
 961                                         if (prev_seg_start_page != -1) {
 962                                                 /* we've found a new segment */
 963                                                 n_contig_segs++;
 964                                                 n_segs += cur_page -
 965                                                         prev_seg_start_page;
 966                                         } else if (seg_start_page != -1) {
 967                                                 /* we didn't find new segment,
 968                                                  * but did end current one
 969                                                  */
 970                                                 n_contig_segs++;
 971                                                 n_segs += cur_page -
 972                                                                 seg_start_page;
 973                                                 seg_start_page = -1;
 974                                                 continue;
 975                                         } else {
 976                                                 /* we're skipping this page */
 977                                                 continue;
 978                                         }
 979                                 }
 980                                 /* segment continues */
 981                         }
 982                         /* check if we missed last segment */
 983                         if (seg_start_page != -1) {
 984                                 n_contig_segs++;
 985                                 n_segs += cur_page - seg_start_page;
 986                         }
 987
 988                         /* if no segments were found, do not preallocate */
 989                         if (n_segs == 0)
 990                                 continue;
 991
 992                         /* we now have total number of pages that we will
 993                          * allocate for this segment list. add separator pages
 994                          * to the total count, and preallocate VA space.
 995                          */
 996                         n_segs += n_contig_segs - 1;
 997
 998                         /* now, preallocate VA space for these segments */
 999
1000                         /* first, find suitable memseg list for this */
1001                         for (msl_idx = 0; msl_idx < RTE_MAX_MEMSEG_LISTS;
1002                                         msl_idx++) {
1003                                 msl = &mcfg->memsegs[msl_idx];
1004
1005                                 if (msl->base_va != NULL)
1006                                         continue;
1007                                 break;
1008                         }
1009                         if (msl_idx == RTE_MAX_MEMSEG_LISTS) {
1010                                 RTE_LOG(ERR, EAL, "Not enough space in memseg lists, please increase %s\n",
1011                                         RTE_STR(CONFIG_RTE_MAX_MEMSEG_LISTS));
1012                                 return -1;
1013                         }
1014
1015                         /* now, allocate fbarray itself */
1016                         if (alloc_memseg_list(msl, page_sz, n_segs, socket,
1017                                                 msl_idx) < 0)
1018                                 return -1;
1019
1020                         /* finally, allocate VA space */
1021                         if (alloc_va_space(msl) < 0)
1022                                 return -1;
1023                 }
1024         }
1025         return 0;
1026 }
1027
1028 /*
1029  * We cannot reallocate memseg lists on the fly because PPC64 stores pages
1030  * backwards, therefore we have to process the entire memseg first before
1031  * remapping it into memseg list VA space.
1032  */
1033 static int
1034 remap_needed_hugepages(struct hugepage_file *hugepages, int n_pages)
1035 {
1036         int cur_page, seg_start_page, new_memseg, ret;
1037
1038         seg_start_page = 0;
1039         for (cur_page = 0; cur_page < n_pages; cur_page++) {
1040                 struct hugepage_file *prev, *cur;
1041
1042                 new_memseg = 0;
1043
1044                 cur = &hugepages[cur_page];
1045                 prev = cur_page == 0 ? NULL : &hugepages[cur_page - 1];
1046
1047                 /* if size is zero, no more pages left */
1048                 if (cur->size == 0)
1049                         break;
1050
1051                 if (cur_page == 0)
1052                         new_memseg = 1;
1053                 else if (cur->socket_id != prev->socket_id)
1054                         new_memseg = 1;
1055                 else if (cur->size != prev->size)
1056                         new_memseg = 1;
1057 #ifdef RTE_ARCH_PPC_64
1058                 /* On PPC64 architecture, the mmap always start from higher
1059                  * address to lower address. Here, physical addresses are in
1060                  * descending order.
1061                  */
1062                 else if ((prev->physaddr - cur->physaddr) != cur->size)
1063                         new_memseg = 1;
1064 #else
1065                 else if ((cur->physaddr - prev->physaddr) != cur->size)
1066                         new_memseg = 1;
1067 #endif
1068
1069                 if (new_memseg) {
1070                         /* if this isn't the first time, remap segment */
1071                         if (cur_page != 0) {
1072                                 ret = remap_segment(hugepages, seg_start_page,
1073                                                 cur_page);
1074                                 if (ret != 0)
1075                                         return -1;
1076                         }
1077                         /* remember where we started */
1078                         seg_start_page = cur_page;
1079                 }
1080                 /* continuation of previous memseg */
1081         }
1082         /* we were stopped, but we didn't remap the last segment, do it now */
1083         if (cur_page != 0) {
1084                 ret = remap_segment(hugepages, seg_start_page,
1085                                 cur_page);
1086                 if (ret != 0)
1087                         return -1;
1088         }
1089         return 0;
1090 }
1091
1092 static inline uint64_t
1093 get_socket_mem_size(int socket)
1094 {
1095         uint64_t size = 0;
1096         unsigned i;
1097
1098         for (i = 0; i < internal_config.num_hugepage_sizes; i++){
1099                 struct hugepage_info *hpi = &internal_config.hugepage_info[i];
1100                 size += hpi->hugepage_sz * hpi->num_pages[socket];
1101         }
1102
1103         return size;
1104 }
1105
1106 /*
1107  * This function is a NUMA-aware equivalent of calc_num_pages.
1108  * It takes in the list of hugepage sizes and the
1109  * number of pages thereof, and calculates the best number of
1110  * pages of each size to fulfill the request for <memory> ram
1111  */
1112 static int
1113 calc_num_pages_per_socket(uint64_t * memory,
1114                 struct hugepage_info *hp_info,
1115                 struct hugepage_info *hp_used,
1116                 unsigned num_hp_info)
1117 {
1118         unsigned socket, j, i = 0;
1119         unsigned requested, available;
1120         int total_num_pages = 0;
1121         uint64_t remaining_mem, cur_mem;
1122         uint64_t total_mem = internal_config.memory;
1123
1124         if (num_hp_info == 0)
1125                 return -1;
1126
1127         /* if specific memory amounts per socket weren't requested */
1128         if (internal_config.force_sockets == 0) {
1129                 size_t total_size;
1130 #ifdef RTE_ARCH_64
1131                 int cpu_per_socket[RTE_MAX_NUMA_NODES];
1132                 size_t default_size;
1133                 unsigned lcore_id;
1134
1135                 /* Compute number of cores per socket */
1136                 memset(cpu_per_socket, 0, sizeof(cpu_per_socket));
1137                 RTE_LCORE_FOREACH(lcore_id) {
1138                         cpu_per_socket[rte_lcore_to_socket_id(lcore_id)]++;
1139                 }
1140
1141                 /*
1142                  * Automatically spread requested memory amongst detected sockets according
1143                  * to number of cores from cpu mask present on each socket
1144                  */
1145                 total_size = internal_config.memory;
1146                 for (socket = 0; socket < RTE_MAX_NUMA_NODES && total_size != 0; socket++) {
1147
1148                         /* Set memory amount per socket */
1149                         default_size = (internal_config.memory * cpu_per_socket[socket])
1150                                         / rte_lcore_count();
1151
1152                         /* Limit to maximum available memory on socket */
1153                         default_size = RTE_MIN(default_size, get_socket_mem_size(socket));
1154
1155                         /* Update sizes */
1156                         memory[socket] = default_size;
1157                         total_size -= default_size;
1158                 }
1159
1160                 /*
1161                  * If some memory is remaining, try to allocate it by getting all
1162                  * available memory from sockets, one after the other
1163                  */
1164                 for (socket = 0; socket < RTE_MAX_NUMA_NODES && total_size != 0; socket++) {
1165                         /* take whatever is available */
1166                         default_size = RTE_MIN(get_socket_mem_size(socket) - memory[socket],
1167                                                total_size);
1168
1169                         /* Update sizes */
1170                         memory[socket] += default_size;
1171                         total_size -= default_size;
1172                 }
1173 #else
1174                 /* in 32-bit mode, allocate all of the memory only on master
1175                  * lcore socket
1176                  */
1177                 total_size = internal_config.memory;
1178                 for (socket = 0; socket < RTE_MAX_NUMA_NODES && total_size != 0;
1179                                 socket++) {
1180                         struct rte_config *cfg = rte_eal_get_configuration();
1181                         unsigned int master_lcore_socket;
1182
1183                         master_lcore_socket =
1184                                 rte_lcore_to_socket_id(cfg->master_lcore);
1185
1186                         if (master_lcore_socket != socket)
1187                                 continue;
1188
1189                         /* Update sizes */
1190                         memory[socket] = total_size;
1191                         break;
1192                 }
1193 #endif
1194         }
1195
1196         for (socket = 0; socket < RTE_MAX_NUMA_NODES && total_mem != 0; socket++) {
1197                 /* skips if the memory on specific socket wasn't requested */
1198                 for (i = 0; i < num_hp_info && memory[socket] != 0; i++){
1199                         strlcpy(hp_used[i].hugedir, hp_info[i].hugedir,
1200                                 sizeof(hp_used[i].hugedir));
1201                         hp_used[i].num_pages[socket] = RTE_MIN(
1202                                         memory[socket] / hp_info[i].hugepage_sz,
1203                                         hp_info[i].num_pages[socket]);
1204
1205                         cur_mem = hp_used[i].num_pages[socket] *
1206                                         hp_used[i].hugepage_sz;
1207
1208                         memory[socket] -= cur_mem;
1209                         total_mem -= cur_mem;
1210
1211                         total_num_pages += hp_used[i].num_pages[socket];
1212
1213                         /* check if we have met all memory requests */
1214                         if (memory[socket] == 0)
1215                                 break;
1216
1217                         /* check if we have any more pages left at this size, if so
1218                          * move on to next size */
1219                         if (hp_used[i].num_pages[socket] == hp_info[i].num_pages[socket])
1220                                 continue;
1221                         /* At this point we know that there are more pages available that are
1222                          * bigger than the memory we want, so lets see if we can get enough
1223                          * from other page sizes.
1224                          */
1225                         remaining_mem = 0;
1226                         for (j = i+1; j < num_hp_info; j++)
1227                                 remaining_mem += hp_info[j].hugepage_sz *
1228                                 hp_info[j].num_pages[socket];
1229
1230                         /* is there enough other memory, if not allocate another page and quit */
1231                         if (remaining_mem < memory[socket]){
1232                                 cur_mem = RTE_MIN(memory[socket],
1233                                                 hp_info[i].hugepage_sz);
1234                                 memory[socket] -= cur_mem;
1235                                 total_mem -= cur_mem;
1236                                 hp_used[i].num_pages[socket]++;
1237                                 total_num_pages++;
1238                                 break; /* we are done with this socket*/
1239                         }
1240                 }
1241                 /* if we didn't satisfy all memory requirements per socket */
1242                 if (memory[socket] > 0 &&
1243                                 internal_config.socket_mem[socket] != 0) {
1244                         /* to prevent icc errors */
1245                         requested = (unsigned) (internal_config.socket_mem[socket] /
1246                                         0x100000);
1247                         available = requested -
1248                                         ((unsigned) (memory[socket] / 0x100000));
1249                         RTE_LOG(ERR, EAL, "Not enough memory available on socket %u! "
1250                                         "Requested: %uMB, available: %uMB\n", socket,
1251                                         requested, available);
1252                         return -1;
1253                 }
1254         }
1255
1256         /* if we didn't satisfy total memory requirements */
1257         if (total_mem > 0) {
1258                 requested = (unsigned) (internal_config.memory / 0x100000);
1259                 available = requested - (unsigned) (total_mem / 0x100000);
1260                 RTE_LOG(ERR, EAL, "Not enough memory available! Requested: %uMB,"
1261                                 " available: %uMB\n", requested, available);
1262                 return -1;
1263         }
1264         return total_num_pages;
1265 }
1266
1267 static inline size_t
1268 eal_get_hugepage_mem_size(void)
1269 {
1270         uint64_t size = 0;
1271         unsigned i, j;
1272
1273         for (i = 0; i < internal_config.num_hugepage_sizes; i++) {
1274                 struct hugepage_info *hpi = &internal_config.hugepage_info[i];
1275                 if (strnlen(hpi->hugedir, sizeof(hpi->hugedir)) != 0) {
1276                         for (j = 0; j < RTE_MAX_NUMA_NODES; j++) {
1277                                 size += hpi->hugepage_sz * hpi->num_pages[j];
1278                         }
1279                 }
1280         }
1281
1282         return (size < SIZE_MAX) ? (size_t)(size) : SIZE_MAX;
1283 }
1284
1285 static struct sigaction huge_action_old;
1286 static int huge_need_recover;
1287
1288 static void
1289 huge_register_sigbus(void)
1290 {
1291         sigset_t mask;
1292         struct sigaction action;
1293
1294         sigemptyset(&mask);
1295         sigaddset(&mask, SIGBUS);
1296         action.sa_flags = 0;
1297         action.sa_mask = mask;
1298         action.sa_handler = huge_sigbus_handler;
1299
1300         huge_need_recover = !sigaction(SIGBUS, &action, &huge_action_old);
1301 }
1302
1303 static void
1304 huge_recover_sigbus(void)
1305 {
1306         if (huge_need_recover) {
1307                 sigaction(SIGBUS, &huge_action_old, NULL);
1308                 huge_need_recover = 0;
1309         }
1310 }
1311
1312 /*
1313  * Prepare physical memory mapping: fill configuration structure with
1314  * these infos, return 0 on success.
1315  *  1. map N huge pages in separate files in hugetlbfs
1316  *  2. find associated physical addr
1317  *  3. find associated NUMA socket ID
1318  *  4. sort all huge pages by physical address
1319  *  5. remap these N huge pages in the correct order
1320  *  6. unmap the first mapping
1321  *  7. fill memsegs in configuration with contiguous zones
1322  */
1323 static int
1324 eal_legacy_hugepage_init(void)
1325 {
1326         struct rte_mem_config *mcfg;
1327         struct hugepage_file *hugepage = NULL, *tmp_hp = NULL;
1328         struct hugepage_info used_hp[MAX_HUGEPAGE_SIZES];
1329         struct rte_fbarray *arr;
1330         struct rte_memseg *ms;
1331
1332         uint64_t memory[RTE_MAX_NUMA_NODES];
1333
1334         unsigned hp_offset;
1335         int i, j;
1336         int nr_hugefiles, nr_hugepages = 0;
1337         void *addr;
1338
1339         test_phys_addrs_available();
1340
1341         memset(used_hp, 0, sizeof(used_hp));
1342
1343         /* get pointer to global configuration */
1344         mcfg = rte_eal_get_configuration()->mem_config;
1345
1346         /* hugetlbfs can be disabled */
1347         if (internal_config.no_hugetlbfs) {
1348                 struct rte_memseg_list *msl;
1349                 int n_segs, cur_seg, fd, flags;
1350 #ifdef MEMFD_SUPPORTED
1351                 int memfd;
1352 #endif
1353                 uint64_t page_sz;
1354
1355                 /* nohuge mode is legacy mode */
1356                 internal_config.legacy_mem = 1;
1357
1358                 /* nohuge mode is single-file segments mode */
1359                 internal_config.single_file_segments = 1;
1360
1361                 /* create a memseg list */
1362                 msl = &mcfg->memsegs[0];
1363
1364                 page_sz = RTE_PGSIZE_4K;
1365                 n_segs = internal_config.memory / page_sz;
1366
1367                 if (rte_fbarray_init(&msl->memseg_arr, "nohugemem", n_segs,
1368                                         sizeof(struct rte_memseg))) {
1369                         RTE_LOG(ERR, EAL, "Cannot allocate memseg list\n");
1370                         return -1;
1371                 }
1372
1373                 /* set up parameters for anonymous mmap */
1374                 fd = -1;
1375                 flags = MAP_PRIVATE | MAP_ANONYMOUS;
1376
1377 #ifdef MEMFD_SUPPORTED
1378                 /* create a memfd and store it in the segment fd table */
1379                 memfd = memfd_create("nohuge", 0);
1380                 if (memfd < 0) {
1381                         RTE_LOG(DEBUG, EAL, "Cannot create memfd: %s\n",
1382                                         strerror(errno));
1383                         RTE_LOG(DEBUG, EAL, "Falling back to anonymous map\n");
1384                 } else {
1385                         /* we got an fd - now resize it */
1386                         if (ftruncate(memfd, internal_config.memory) < 0) {
1387                                 RTE_LOG(ERR, EAL, "Cannot resize memfd: %s\n",
1388                                                 strerror(errno));
1389                                 RTE_LOG(ERR, EAL, "Falling back to anonymous map\n");
1390                                 close(memfd);
1391                         } else {
1392                                 /* creating memfd-backed file was successful.
1393                                  * we want changes to memfd to be visible to
1394                                  * other processes (such as vhost backend), so
1395                                  * map it as shared memory.
1396                                  */
1397                                 RTE_LOG(DEBUG, EAL, "Using memfd for anonymous memory\n");
1398                                 fd = memfd;
1399                                 flags = MAP_SHARED;
1400                         }
1401                 }
1402 #endif
1403                 addr = mmap(NULL, internal_config.memory, PROT_READ | PROT_WRITE,
1404                                 flags, fd, 0);
1405                 if (addr == MAP_FAILED) {
1406                         RTE_LOG(ERR, EAL, "%s: mmap() failed: %s\n", __func__,
1407                                         strerror(errno));
1408                         return -1;
1409                 }
1410                 msl->base_va = addr;
1411                 msl->page_sz = page_sz;
1412                 msl->socket_id = 0;
1413                 msl->len = internal_config.memory;
1414
1415                 /* we're in single-file segments mode, so only the segment list
1416                  * fd needs to be set up.
1417                  */
1418                 if (fd != -1) {
1419                         if (eal_memalloc_set_seg_list_fd(0, fd) < 0) {
1420                                 RTE_LOG(ERR, EAL, "Cannot set up segment list fd\n");
1421                                 /* not a serious error, proceed */
1422                         }
1423                 }
1424
1425                 /* populate memsegs. each memseg is one page long */
1426                 for (cur_seg = 0; cur_seg < n_segs; cur_seg++) {
1427                         arr = &msl->memseg_arr;
1428
1429                         ms = rte_fbarray_get(arr, cur_seg);
1430                         if (rte_eal_iova_mode() == RTE_IOVA_VA)
1431                                 ms->iova = (uintptr_t)addr;
1432                         else
1433                                 ms->iova = RTE_BAD_IOVA;
1434                         ms->addr = addr;
1435                         ms->hugepage_sz = page_sz;
1436                         ms->socket_id = 0;
1437                         ms->len = page_sz;
1438
1439                         rte_fbarray_set_used(arr, cur_seg);
1440
1441                         addr = RTE_PTR_ADD(addr, (size_t)page_sz);
1442                 }
1443                 if (mcfg->dma_maskbits &&
1444                     rte_mem_check_dma_mask_thread_unsafe(mcfg->dma_maskbits)) {
1445                         RTE_LOG(ERR, EAL,
1446                                 "%s(): couldn't allocate memory due to IOVA exceeding limits of current DMA mask.\n",
1447                                 __func__);
1448                         if (rte_eal_iova_mode() == RTE_IOVA_VA &&
1449                             rte_eal_using_phys_addrs())
1450                                 RTE_LOG(ERR, EAL,
1451                                         "%s(): Please try initializing EAL with --iova-mode=pa parameter.\n",
1452                                         __func__);
1453                         goto fail;
1454                 }
1455                 return 0;
1456         }
1457
1458         /* calculate total number of hugepages available. at this point we haven't
1459          * yet started sorting them so they all are on socket 0 */
1460         for (i = 0; i < (int) internal_config.num_hugepage_sizes; i++) {
1461                 /* meanwhile, also initialize used_hp hugepage sizes in used_hp */
1462                 used_hp[i].hugepage_sz = internal_config.hugepage_info[i].hugepage_sz;
1463
1464                 nr_hugepages += internal_config.hugepage_info[i].num_pages[0];
1465         }
1466
1467         /*
1468          * allocate a memory area for hugepage table.
1469          * this isn't shared memory yet. due to the fact that we need some
1470          * processing done on these pages, shared memory will be created
1471          * at a later stage.
1472          */
1473         tmp_hp = malloc(nr_hugepages * sizeof(struct hugepage_file));
1474         if (tmp_hp == NULL)
1475                 goto fail;
1476
1477         memset(tmp_hp, 0, nr_hugepages * sizeof(struct hugepage_file));
1478
1479         hp_offset = 0; /* where we start the current page size entries */
1480
1481         huge_register_sigbus();
1482
1483         /* make a copy of socket_mem, needed for balanced allocation. */
1484         for (i = 0; i < RTE_MAX_NUMA_NODES; i++)
1485                 memory[i] = internal_config.socket_mem[i];
1486
1487         /* map all hugepages and sort them */
1488         for (i = 0; i < (int)internal_config.num_hugepage_sizes; i ++){
1489                 unsigned pages_old, pages_new;
1490                 struct hugepage_info *hpi;
1491
1492                 /*
1493                  * we don't yet mark hugepages as used at this stage, so
1494                  * we just map all hugepages available to the system
1495                  * all hugepages are still located on socket 0
1496                  */
1497                 hpi = &internal_config.hugepage_info[i];
1498
1499                 if (hpi->num_pages[0] == 0)
1500                         continue;
1501
1502                 /* map all hugepages available */
1503                 pages_old = hpi->num_pages[0];
1504                 pages_new = map_all_hugepages(&tmp_hp[hp_offset], hpi, memory);
1505                 if (pages_new < pages_old) {
1506                         RTE_LOG(DEBUG, EAL,
1507                                 "%d not %d hugepages of size %u MB allocated\n",
1508                                 pages_new, pages_old,
1509                                 (unsigned)(hpi->hugepage_sz / 0x100000));
1510
1511                         int pages = pages_old - pages_new;
1512
1513                         nr_hugepages -= pages;
1514                         hpi->num_pages[0] = pages_new;
1515                         if (pages_new == 0)
1516                                 continue;
1517                 }
1518
1519                 if (phys_addrs_available &&
1520                                 rte_eal_iova_mode() != RTE_IOVA_VA) {
1521                         /* find physical addresses for each hugepage */
1522                         if (find_physaddrs(&tmp_hp[hp_offset], hpi) < 0) {
1523                                 RTE_LOG(DEBUG, EAL, "Failed to find phys addr "
1524                                         "for %u MB pages\n",
1525                                         (unsigned int)(hpi->hugepage_sz / 0x100000));
1526                                 goto fail;
1527                         }
1528                 } else {
1529                         /* set physical addresses for each hugepage */
1530                         if (set_physaddrs(&tmp_hp[hp_offset], hpi) < 0) {
1531                                 RTE_LOG(DEBUG, EAL, "Failed to set phys addr "
1532                                         "for %u MB pages\n",
1533                                         (unsigned int)(hpi->hugepage_sz / 0x100000));
1534                                 goto fail;
1535                         }
1536                 }
1537
1538                 if (find_numasocket(&tmp_hp[hp_offset], hpi) < 0){
1539                         RTE_LOG(DEBUG, EAL, "Failed to find NUMA socket for %u MB pages\n",
1540                                         (unsigned)(hpi->hugepage_sz / 0x100000));
1541                         goto fail;
1542                 }
1543
1544                 qsort(&tmp_hp[hp_offset], hpi->num_pages[0],
1545                       sizeof(struct hugepage_file), cmp_physaddr);
1546
1547                 /* we have processed a num of hugepages of this size, so inc offset */
1548                 hp_offset += hpi->num_pages[0];
1549         }
1550
1551         huge_recover_sigbus();
1552
1553         if (internal_config.memory == 0 && internal_config.force_sockets == 0)
1554                 internal_config.memory = eal_get_hugepage_mem_size();
1555
1556         nr_hugefiles = nr_hugepages;
1557
1558
1559         /* clean out the numbers of pages */
1560         for (i = 0; i < (int) internal_config.num_hugepage_sizes; i++)
1561                 for (j = 0; j < RTE_MAX_NUMA_NODES; j++)
1562                         internal_config.hugepage_info[i].num_pages[j] = 0;
1563
1564         /* get hugepages for each socket */
1565         for (i = 0; i < nr_hugefiles; i++) {
1566                 int socket = tmp_hp[i].socket_id;
1567
1568                 /* find a hugepage info with right size and increment num_pages */
1569                 const int nb_hpsizes = RTE_MIN(MAX_HUGEPAGE_SIZES,
1570                                 (int)internal_config.num_hugepage_sizes);
1571                 for (j = 0; j < nb_hpsizes; j++) {
1572                         if (tmp_hp[i].size ==
1573                                         internal_config.hugepage_info[j].hugepage_sz) {
1574                                 internal_config.hugepage_info[j].num_pages[socket]++;
1575                         }
1576                 }
1577         }
1578
1579         /* make a copy of socket_mem, needed for number of pages calculation */
1580         for (i = 0; i < RTE_MAX_NUMA_NODES; i++)
1581                 memory[i] = internal_config.socket_mem[i];
1582
1583         /* calculate final number of pages */
1584         nr_hugepages = calc_num_pages_per_socket(memory,
1585                         internal_config.hugepage_info, used_hp,
1586                         internal_config.num_hugepage_sizes);
1587
1588         /* error if not enough memory available */
1589         if (nr_hugepages < 0)
1590                 goto fail;
1591
1592         /* reporting in! */
1593         for (i = 0; i < (int) internal_config.num_hugepage_sizes; i++) {
1594                 for (j = 0; j < RTE_MAX_NUMA_NODES; j++) {
1595                         if (used_hp[i].num_pages[j] > 0) {
1596                                 RTE_LOG(DEBUG, EAL,
1597                                         "Requesting %u pages of size %uMB"
1598                                         " from socket %i\n",
1599                                         used_hp[i].num_pages[j],
1600                                         (unsigned)
1601                                         (used_hp[i].hugepage_sz / 0x100000),
1602                                         j);
1603                         }
1604                 }
1605         }
1606
1607         /* create shared memory */
1608         hugepage = create_shared_memory(eal_hugepage_data_path(),
1609                         nr_hugefiles * sizeof(struct hugepage_file));
1610
1611         if (hugepage == NULL) {
1612                 RTE_LOG(ERR, EAL, "Failed to create shared memory!\n");
1613                 goto fail;
1614         }
1615         memset(hugepage, 0, nr_hugefiles * sizeof(struct hugepage_file));
1616
1617         /*
1618          * unmap pages that we won't need (looks at used_hp).
1619          * also, sets final_va to NULL on pages that were unmapped.
1620          */
1621         if (unmap_unneeded_hugepages(tmp_hp, used_hp,
1622                         internal_config.num_hugepage_sizes) < 0) {
1623                 RTE_LOG(ERR, EAL, "Unmapping and locking hugepages failed!\n");
1624                 goto fail;
1625         }
1626
1627         /*
1628          * copy stuff from malloc'd hugepage* to the actual shared memory.
1629          * this procedure only copies those hugepages that have orig_va
1630          * not NULL. has overflow protection.
1631          */
1632         if (copy_hugepages_to_shared_mem(hugepage, nr_hugefiles,
1633                         tmp_hp, nr_hugefiles) < 0) {
1634                 RTE_LOG(ERR, EAL, "Copying tables to shared memory failed!\n");
1635                 goto fail;
1636         }
1637
1638 #ifndef RTE_ARCH_64
1639         /* for legacy 32-bit mode, we did not preallocate VA space, so do it */
1640         if (internal_config.legacy_mem &&
1641                         prealloc_segments(hugepage, nr_hugefiles)) {
1642                 RTE_LOG(ERR, EAL, "Could not preallocate VA space for hugepages\n");
1643                 goto fail;
1644         }
1645 #endif
1646
1647         /* remap all pages we do need into memseg list VA space, so that those
1648          * pages become first-class citizens in DPDK memory subsystem
1649          */
1650         if (remap_needed_hugepages(hugepage, nr_hugefiles)) {
1651                 RTE_LOG(ERR, EAL, "Couldn't remap hugepage files into memseg lists\n");
1652                 goto fail;
1653         }
1654
1655         /* free the hugepage backing files */
1656         if (internal_config.hugepage_unlink &&
1657                 unlink_hugepage_files(tmp_hp, internal_config.num_hugepage_sizes) < 0) {
1658                 RTE_LOG(ERR, EAL, "Unlinking hugepage files failed!\n");
1659                 goto fail;
1660         }
1661
1662         /* free the temporary hugepage table */
1663         free(tmp_hp);
1664         tmp_hp = NULL;
1665
1666         munmap(hugepage, nr_hugefiles * sizeof(struct hugepage_file));
1667         hugepage = NULL;
1668
1669         /* we're not going to allocate more pages, so release VA space for
1670          * unused memseg lists
1671          */
1672         for (i = 0; i < RTE_MAX_MEMSEG_LISTS; i++) {
1673                 struct rte_memseg_list *msl = &mcfg->memsegs[i];
1674                 size_t mem_sz;
1675
1676                 /* skip inactive lists */
1677                 if (msl->base_va == NULL)
1678                         continue;
1679                 /* skip lists where there is at least one page allocated */
1680                 if (msl->memseg_arr.count > 0)
1681                         continue;
1682                 /* this is an unused list, deallocate it */
1683                 mem_sz = msl->len;
1684                 munmap(msl->base_va, mem_sz);
1685                 msl->base_va = NULL;
1686
1687                 /* destroy backing fbarray */
1688                 rte_fbarray_destroy(&msl->memseg_arr);
1689         }
1690
1691         if (mcfg->dma_maskbits &&
1692             rte_mem_check_dma_mask_thread_unsafe(mcfg->dma_maskbits)) {
1693                 RTE_LOG(ERR, EAL,
1694                         "%s(): couldn't allocate memory due to IOVA exceeding limits of current DMA mask.\n",
1695                         __func__);
1696                 goto fail;
1697         }
1698
1699         return 0;
1700
1701 fail:
1702         huge_recover_sigbus();
1703         free(tmp_hp);
1704         if (hugepage != NULL)
1705                 munmap(hugepage, nr_hugefiles * sizeof(struct hugepage_file));
1706
1707         return -1;
1708 }
1709
1710 static int __rte_unused
1711 hugepage_count_walk(const struct rte_memseg_list *msl, void *arg)
1712 {
1713         struct hugepage_info *hpi = arg;
1714
1715         if (msl->page_sz != hpi->hugepage_sz)
1716                 return 0;
1717
1718         hpi->num_pages[msl->socket_id] += msl->memseg_arr.len;
1719         return 0;
1720 }
1721
1722 static int
1723 limits_callback(int socket_id, size_t cur_limit, size_t new_len)
1724 {
1725         RTE_SET_USED(socket_id);
1726         RTE_SET_USED(cur_limit);
1727         RTE_SET_USED(new_len);
1728         return -1;
1729 }
1730
1731 static int
1732 eal_hugepage_init(void)
1733 {
1734         struct hugepage_info used_hp[MAX_HUGEPAGE_SIZES];
1735         uint64_t memory[RTE_MAX_NUMA_NODES];
1736         int hp_sz_idx, socket_id;
1737
1738         test_phys_addrs_available();
1739
1740         memset(used_hp, 0, sizeof(used_hp));
1741
1742         for (hp_sz_idx = 0;
1743                         hp_sz_idx < (int) internal_config.num_hugepage_sizes;
1744                         hp_sz_idx++) {
1745 #ifndef RTE_ARCH_64
1746                 struct hugepage_info dummy;
1747                 unsigned int i;
1748 #endif
1749                 /* also initialize used_hp hugepage sizes in used_hp */
1750                 struct hugepage_info *hpi;
1751                 hpi = &internal_config.hugepage_info[hp_sz_idx];
1752                 used_hp[hp_sz_idx].hugepage_sz = hpi->hugepage_sz;
1753
1754 #ifndef RTE_ARCH_64
1755                 /* for 32-bit, limit number of pages on socket to whatever we've
1756                  * preallocated, as we cannot allocate more.
1757                  */
1758                 memset(&dummy, 0, sizeof(dummy));
1759                 dummy.hugepage_sz = hpi->hugepage_sz;
1760                 if (rte_memseg_list_walk(hugepage_count_walk, &dummy) < 0)
1761                         return -1;
1762
1763                 for (i = 0; i < RTE_DIM(dummy.num_pages); i++) {
1764                         hpi->num_pages[i] = RTE_MIN(hpi->num_pages[i],
1765                                         dummy.num_pages[i]);
1766                 }
1767 #endif
1768         }
1769
1770         /* make a copy of socket_mem, needed for balanced allocation. */
1771         for (hp_sz_idx = 0; hp_sz_idx < RTE_MAX_NUMA_NODES; hp_sz_idx++)
1772                 memory[hp_sz_idx] = internal_config.socket_mem[hp_sz_idx];
1773
1774         /* calculate final number of pages */
1775         if (calc_num_pages_per_socket(memory,
1776                         internal_config.hugepage_info, used_hp,
1777                         internal_config.num_hugepage_sizes) < 0)
1778                 return -1;
1779
1780         for (hp_sz_idx = 0;
1781                         hp_sz_idx < (int)internal_config.num_hugepage_sizes;
1782                         hp_sz_idx++) {
1783                 for (socket_id = 0; socket_id < RTE_MAX_NUMA_NODES;
1784                                 socket_id++) {
1785                         struct rte_memseg **pages;
1786                         struct hugepage_info *hpi = &used_hp[hp_sz_idx];
1787                         unsigned int num_pages = hpi->num_pages[socket_id];
1788                         unsigned int num_pages_alloc;
1789
1790                         if (num_pages == 0)
1791                                 continue;
1792
1793                         RTE_LOG(DEBUG, EAL, "Allocating %u pages of size %" PRIu64 "M on socket %i\n",
1794                                 num_pages, hpi->hugepage_sz >> 20, socket_id);
1795
1796                         /* we may not be able to allocate all pages in one go,
1797                          * because we break up our memory map into multiple
1798                          * memseg lists. therefore, try allocating multiple
1799                          * times and see if we can get the desired number of
1800                          * pages from multiple allocations.
1801                          */
1802
1803                         num_pages_alloc = 0;
1804                         do {
1805                                 int i, cur_pages, needed;
1806
1807                                 needed = num_pages - num_pages_alloc;
1808
1809                                 pages = malloc(sizeof(*pages) * needed);
1810
1811                                 /* do not request exact number of pages */
1812                                 cur_pages = eal_memalloc_alloc_seg_bulk(pages,
1813                                                 needed, hpi->hugepage_sz,
1814                                                 socket_id, false);
1815                                 if (cur_pages <= 0) {
1816                                         free(pages);
1817                                         return -1;
1818                                 }
1819
1820                                 /* mark preallocated pages as unfreeable */
1821                                 for (i = 0; i < cur_pages; i++) {
1822                                         struct rte_memseg *ms = pages[i];
1823                                         ms->flags |= RTE_MEMSEG_FLAG_DO_NOT_FREE;
1824                                 }
1825                                 free(pages);
1826
1827                                 num_pages_alloc += cur_pages;
1828                         } while (num_pages_alloc != num_pages);
1829                 }
1830         }
1831         /* if socket limits were specified, set them */
1832         if (internal_config.force_socket_limits) {
1833                 unsigned int i;
1834                 for (i = 0; i < RTE_MAX_NUMA_NODES; i++) {
1835                         uint64_t limit = internal_config.socket_limit[i];
1836                         if (limit == 0)
1837                                 continue;
1838                         if (rte_mem_alloc_validator_register("socket-limit",
1839                                         limits_callback, i, limit))
1840                                 RTE_LOG(ERR, EAL, "Failed to register socket limits validator callback\n");
1841                 }
1842         }
1843         return 0;
1844 }
1845
1846 /*
1847  * uses fstat to report the size of a file on disk
1848  */
1849 static off_t
1850 getFileSize(int fd)
1851 {
1852         struct stat st;
1853         if (fstat(fd, &st) < 0)
1854                 return 0;
1855         return st.st_size;
1856 }
1857
1858 /*
1859  * This creates the memory mappings in the secondary process to match that of
1860  * the server process. It goes through each memory segment in the DPDK runtime
1861  * configuration and finds the hugepages which form that segment, mapping them
1862  * in order to form a contiguous block in the virtual memory space
1863  */
1864 static int
1865 eal_legacy_hugepage_attach(void)
1866 {
1867         struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
1868         struct hugepage_file *hp = NULL;
1869         unsigned int num_hp = 0;
1870         unsigned int i = 0;
1871         unsigned int cur_seg;
1872         off_t size = 0;
1873         int fd, fd_hugepage = -1;
1874
1875         if (aslr_enabled() > 0) {
1876                 RTE_LOG(WARNING, EAL, "WARNING: Address Space Layout Randomization "
1877                                 "(ASLR) is enabled in the kernel.\n");
1878                 RTE_LOG(WARNING, EAL, "   This may cause issues with mapping memory "
1879                                 "into secondary processes\n");
1880         }
1881
1882         test_phys_addrs_available();
1883
1884         fd_hugepage = open(eal_hugepage_data_path(), O_RDONLY);
1885         if (fd_hugepage < 0) {
1886                 RTE_LOG(ERR, EAL, "Could not open %s\n",
1887                                 eal_hugepage_data_path());
1888                 goto error;
1889         }
1890
1891         size = getFileSize(fd_hugepage);
1892         hp = mmap(NULL, size, PROT_READ, MAP_PRIVATE, fd_hugepage, 0);
1893         if (hp == MAP_FAILED) {
1894                 RTE_LOG(ERR, EAL, "Could not mmap %s\n",
1895                                 eal_hugepage_data_path());
1896                 goto error;
1897         }
1898
1899         num_hp = size / sizeof(struct hugepage_file);
1900         RTE_LOG(DEBUG, EAL, "Analysing %u files\n", num_hp);
1901
1902         /* map all segments into memory to make sure we get the addrs. the
1903          * segments themselves are already in memseg list (which is shared and
1904          * has its VA space already preallocated), so we just need to map
1905          * everything into correct addresses.
1906          */
1907         for (i = 0; i < num_hp; i++) {
1908                 struct hugepage_file *hf = &hp[i];
1909                 size_t map_sz = hf->size;
1910                 void *map_addr = hf->final_va;
1911                 int msl_idx, ms_idx;
1912                 struct rte_memseg_list *msl;
1913                 struct rte_memseg *ms;
1914
1915                 /* if size is zero, no more pages left */
1916                 if (map_sz == 0)
1917                         break;
1918
1919                 fd = open(hf->filepath, O_RDWR);
1920                 if (fd < 0) {
1921                         RTE_LOG(ERR, EAL, "Could not open %s: %s\n",
1922                                 hf->filepath, strerror(errno));
1923                         goto error;
1924                 }
1925
1926                 map_addr = mmap(map_addr, map_sz, PROT_READ | PROT_WRITE,
1927                                 MAP_SHARED | MAP_FIXED, fd, 0);
1928                 if (map_addr == MAP_FAILED) {
1929                         RTE_LOG(ERR, EAL, "Could not map %s: %s\n",
1930                                 hf->filepath, strerror(errno));
1931                         goto fd_error;
1932                 }
1933
1934                 /* set shared lock on the file. */
1935                 if (flock(fd, LOCK_SH) < 0) {
1936                         RTE_LOG(DEBUG, EAL, "%s(): Locking file failed: %s\n",
1937                                 __func__, strerror(errno));
1938                         goto fd_error;
1939                 }
1940
1941                 /* find segment data */
1942                 msl = rte_mem_virt2memseg_list(map_addr);
1943                 if (msl == NULL) {
1944                         RTE_LOG(DEBUG, EAL, "%s(): Cannot find memseg list\n",
1945                                 __func__);
1946                         goto fd_error;
1947                 }
1948                 ms = rte_mem_virt2memseg(map_addr, msl);
1949                 if (ms == NULL) {
1950                         RTE_LOG(DEBUG, EAL, "%s(): Cannot find memseg\n",
1951                                 __func__);
1952                         goto fd_error;
1953                 }
1954
1955                 msl_idx = msl - mcfg->memsegs;
1956                 ms_idx = rte_fbarray_find_idx(&msl->memseg_arr, ms);
1957                 if (ms_idx < 0) {
1958                         RTE_LOG(DEBUG, EAL, "%s(): Cannot find memseg idx\n",
1959                                 __func__);
1960                         goto fd_error;
1961                 }
1962
1963                 /* store segment fd internally */
1964                 if (eal_memalloc_set_seg_fd(msl_idx, ms_idx, fd) < 0)
1965                         RTE_LOG(ERR, EAL, "Could not store segment fd: %s\n",
1966                                 rte_strerror(rte_errno));
1967         }
1968         /* unmap the hugepage config file, since we are done using it */
1969         munmap(hp, size);
1970         close(fd_hugepage);
1971         return 0;
1972
1973 fd_error:
1974         close(fd);
1975 error:
1976         /* map all segments into memory to make sure we get the addrs */
1977         cur_seg = 0;
1978         for (cur_seg = 0; cur_seg < i; cur_seg++) {
1979                 struct hugepage_file *hf = &hp[i];
1980                 size_t map_sz = hf->size;
1981                 void *map_addr = hf->final_va;
1982
1983                 munmap(map_addr, map_sz);
1984         }
1985         if (hp != NULL && hp != MAP_FAILED)
1986                 munmap(hp, size);
1987         if (fd_hugepage >= 0)
1988                 close(fd_hugepage);
1989         return -1;
1990 }
1991
1992 static int
1993 eal_hugepage_attach(void)
1994 {
1995         if (eal_memalloc_sync_with_primary()) {
1996                 RTE_LOG(ERR, EAL, "Could not map memory from primary process\n");
1997                 if (aslr_enabled() > 0)
1998                         RTE_LOG(ERR, EAL, "It is recommended to disable ASLR in the kernel and retry running both primary and secondary processes\n");
1999                 return -1;
2000         }
2001         return 0;
2002 }
2003
2004 int
2005 rte_eal_hugepage_init(void)
2006 {
2007         return internal_config.legacy_mem ?
2008                         eal_legacy_hugepage_init() :
2009                         eal_hugepage_init();
2010 }
2011
2012 int
2013 rte_eal_hugepage_attach(void)
2014 {
2015         return internal_config.legacy_mem ?
2016                         eal_legacy_hugepage_attach() :
2017                         eal_hugepage_attach();
2018 }
2019
2020 int
2021 rte_eal_using_phys_addrs(void)
2022 {
2023         return phys_addrs_available;
2024 }
2025
2026 static int __rte_unused
2027 memseg_primary_init_32(void)
2028 {
2029         struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
2030         int active_sockets, hpi_idx, msl_idx = 0;
2031         unsigned int socket_id, i;
2032         struct rte_memseg_list *msl;
2033         uint64_t extra_mem_per_socket, total_extra_mem, total_requested_mem;
2034         uint64_t max_mem;
2035
2036         /* no-huge does not need this at all */
2037         if (internal_config.no_hugetlbfs)
2038                 return 0;
2039
2040         /* this is a giant hack, but desperate times call for desperate
2041          * measures. in legacy 32-bit mode, we cannot preallocate VA space,
2042          * because having upwards of 2 gigabytes of VA space already mapped will
2043          * interfere with our ability to map and sort hugepages.
2044          *
2045          * therefore, in legacy 32-bit mode, we will be initializing memseg
2046          * lists much later - in eal_memory.c, right after we unmap all the
2047          * unneeded pages. this will not affect secondary processes, as those
2048          * should be able to mmap the space without (too many) problems.
2049          */
2050         if (internal_config.legacy_mem)
2051                 return 0;
2052
2053         /* 32-bit mode is a very special case. we cannot know in advance where
2054          * the user will want to allocate their memory, so we have to do some
2055          * heuristics.
2056          */
2057         active_sockets = 0;
2058         total_requested_mem = 0;
2059         if (internal_config.force_sockets)
2060                 for (i = 0; i < rte_socket_count(); i++) {
2061                         uint64_t mem;
2062
2063                         socket_id = rte_socket_id_by_idx(i);
2064                         mem = internal_config.socket_mem[socket_id];
2065
2066                         if (mem == 0)
2067                                 continue;
2068
2069                         active_sockets++;
2070                         total_requested_mem += mem;
2071                 }
2072         else
2073                 total_requested_mem = internal_config.memory;
2074
2075         max_mem = (uint64_t)RTE_MAX_MEM_MB << 20;
2076         if (total_requested_mem > max_mem) {
2077                 RTE_LOG(ERR, EAL, "Invalid parameters: 32-bit process can at most use %uM of memory\n",
2078                                 (unsigned int)(max_mem >> 20));
2079                 return -1;
2080         }
2081         total_extra_mem = max_mem - total_requested_mem;
2082         extra_mem_per_socket = active_sockets == 0 ? total_extra_mem :
2083                         total_extra_mem / active_sockets;
2084
2085         /* the allocation logic is a little bit convoluted, but here's how it
2086          * works, in a nutshell:
2087          *  - if user hasn't specified on which sockets to allocate memory via
2088          *    --socket-mem, we allocate all of our memory on master core socket.
2089          *  - if user has specified sockets to allocate memory on, there may be
2090          *    some "unused" memory left (e.g. if user has specified --socket-mem
2091          *    such that not all memory adds up to 2 gigabytes), so add it to all
2092          *    sockets that are in use equally.
2093          *
2094          * page sizes are sorted by size in descending order, so we can safely
2095          * assume that we dispense with bigger page sizes first.
2096          */
2097
2098         /* create memseg lists */
2099         for (i = 0; i < rte_socket_count(); i++) {
2100                 int hp_sizes = (int) internal_config.num_hugepage_sizes;
2101                 uint64_t max_socket_mem, cur_socket_mem;
2102                 unsigned int master_lcore_socket;
2103                 struct rte_config *cfg = rte_eal_get_configuration();
2104                 bool skip;
2105
2106                 socket_id = rte_socket_id_by_idx(i);
2107
2108 #ifndef RTE_EAL_NUMA_AWARE_HUGEPAGES
2109                 /* we can still sort pages by socket in legacy mode */
2110                 if (!internal_config.legacy_mem && socket_id > 0)
2111                         break;
2112 #endif
2113
2114                 /* if we didn't specifically request memory on this socket */
2115                 skip = active_sockets != 0 &&
2116                                 internal_config.socket_mem[socket_id] == 0;
2117                 /* ...or if we didn't specifically request memory on *any*
2118                  * socket, and this is not master lcore
2119                  */
2120                 master_lcore_socket = rte_lcore_to_socket_id(cfg->master_lcore);
2121                 skip |= active_sockets == 0 && socket_id != master_lcore_socket;
2122
2123                 if (skip) {
2124                         RTE_LOG(DEBUG, EAL, "Will not preallocate memory on socket %u\n",
2125                                         socket_id);
2126                         continue;
2127                 }
2128
2129                 /* max amount of memory on this socket */
2130                 max_socket_mem = (active_sockets != 0 ?
2131                                         internal_config.socket_mem[socket_id] :
2132                                         internal_config.memory) +
2133                                         extra_mem_per_socket;
2134                 cur_socket_mem = 0;
2135
2136                 for (hpi_idx = 0; hpi_idx < hp_sizes; hpi_idx++) {
2137                         uint64_t max_pagesz_mem, cur_pagesz_mem = 0;
2138                         uint64_t hugepage_sz;
2139                         struct hugepage_info *hpi;
2140                         int type_msl_idx, max_segs, total_segs = 0;
2141
2142                         hpi = &internal_config.hugepage_info[hpi_idx];
2143                         hugepage_sz = hpi->hugepage_sz;
2144
2145                         /* check if pages are actually available */
2146                         if (hpi->num_pages[socket_id] == 0)
2147                                 continue;
2148
2149                         max_segs = RTE_MAX_MEMSEG_PER_TYPE;
2150                         max_pagesz_mem = max_socket_mem - cur_socket_mem;
2151
2152                         /* make it multiple of page size */
2153                         max_pagesz_mem = RTE_ALIGN_FLOOR(max_pagesz_mem,
2154                                         hugepage_sz);
2155
2156                         RTE_LOG(DEBUG, EAL, "Attempting to preallocate "
2157                                         "%" PRIu64 "M on socket %i\n",
2158                                         max_pagesz_mem >> 20, socket_id);
2159
2160                         type_msl_idx = 0;
2161                         while (cur_pagesz_mem < max_pagesz_mem &&
2162                                         total_segs < max_segs) {
2163                                 uint64_t cur_mem;
2164                                 unsigned int n_segs;
2165
2166                                 if (msl_idx >= RTE_MAX_MEMSEG_LISTS) {
2167                                         RTE_LOG(ERR, EAL,
2168                                                 "No more space in memseg lists, please increase %s\n",
2169                                                 RTE_STR(CONFIG_RTE_MAX_MEMSEG_LISTS));
2170                                         return -1;
2171                                 }
2172
2173                                 msl = &mcfg->memsegs[msl_idx];
2174
2175                                 cur_mem = get_mem_amount(hugepage_sz,
2176                                                 max_pagesz_mem);
2177                                 n_segs = cur_mem / hugepage_sz;
2178
2179                                 if (alloc_memseg_list(msl, hugepage_sz, n_segs,
2180                                                 socket_id, type_msl_idx)) {
2181                                         /* failing to allocate a memseg list is
2182                                          * a serious error.
2183                                          */
2184                                         RTE_LOG(ERR, EAL, "Cannot allocate memseg list\n");
2185                                         return -1;
2186                                 }
2187
2188                                 if (alloc_va_space(msl)) {
2189                                         /* if we couldn't allocate VA space, we
2190                                          * can try with smaller page sizes.
2191                                          */
2192                                         RTE_LOG(ERR, EAL, "Cannot allocate VA space for memseg list, retrying with different page size\n");
2193                                         /* deallocate memseg list */
2194                                         if (free_memseg_list(msl))
2195                                                 return -1;
2196                                         break;
2197                                 }
2198
2199                                 total_segs += msl->memseg_arr.len;
2200                                 cur_pagesz_mem = total_segs * hugepage_sz;
2201                                 type_msl_idx++;
2202                                 msl_idx++;
2203                         }
2204                         cur_socket_mem += cur_pagesz_mem;
2205                 }
2206                 if (cur_socket_mem == 0) {
2207                         RTE_LOG(ERR, EAL, "Cannot allocate VA space on socket %u\n",
2208                                 socket_id);
2209                         return -1;
2210                 }
2211         }
2212
2213         return 0;
2214 }
2215
2216 static int __rte_unused
2217 memseg_primary_init(void)
2218 {
2219         struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
2220         struct memtype {
2221                 uint64_t page_sz;
2222                 int socket_id;
2223         } *memtypes = NULL;
2224         int i, hpi_idx, msl_idx, ret = -1; /* fail unless told to succeed */
2225         struct rte_memseg_list *msl;
2226         uint64_t max_mem, max_mem_per_type;
2227         unsigned int max_seglists_per_type;
2228         unsigned int n_memtypes, cur_type;
2229
2230         /* no-huge does not need this at all */
2231         if (internal_config.no_hugetlbfs)
2232                 return 0;
2233
2234         /*
2235          * figuring out amount of memory we're going to have is a long and very
2236          * involved process. the basic element we're operating with is a memory
2237          * type, defined as a combination of NUMA node ID and page size (so that
2238          * e.g. 2 sockets with 2 page sizes yield 4 memory types in total).
2239          *
2240          * deciding amount of memory going towards each memory type is a
2241          * balancing act between maximum segments per type, maximum memory per
2242          * type, and number of detected NUMA nodes. the goal is to make sure
2243          * each memory type gets at least one memseg list.
2244          *
2245          * the total amount of memory is limited by RTE_MAX_MEM_MB value.
2246          *
2247          * the total amount of memory per type is limited by either
2248          * RTE_MAX_MEM_MB_PER_TYPE, or by RTE_MAX_MEM_MB divided by the number
2249          * of detected NUMA nodes. additionally, maximum number of segments per
2250          * type is also limited by RTE_MAX_MEMSEG_PER_TYPE. this is because for
2251          * smaller page sizes, it can take hundreds of thousands of segments to
2252          * reach the above specified per-type memory limits.
2253          *
2254          * additionally, each type may have multiple memseg lists associated
2255          * with it, each limited by either RTE_MAX_MEM_MB_PER_LIST for bigger
2256          * page sizes, or RTE_MAX_MEMSEG_PER_LIST segments for smaller ones.
2257          *
2258          * the number of memseg lists per type is decided based on the above
2259          * limits, and also taking number of detected NUMA nodes, to make sure
2260          * that we don't run out of memseg lists before we populate all NUMA
2261          * nodes with memory.
2262          *
2263          * we do this in three stages. first, we collect the number of types.
2264          * then, we figure out memory constraints and populate the list of
2265          * would-be memseg lists. then, we go ahead and allocate the memseg
2266          * lists.
2267          */
2268
2269         /* create space for mem types */
2270         n_memtypes = internal_config.num_hugepage_sizes * rte_socket_count();
2271         memtypes = calloc(n_memtypes, sizeof(*memtypes));
2272         if (memtypes == NULL) {
2273                 RTE_LOG(ERR, EAL, "Cannot allocate space for memory types\n");
2274                 return -1;
2275         }
2276
2277         /* populate mem types */
2278         cur_type = 0;
2279         for (hpi_idx = 0; hpi_idx < (int) internal_config.num_hugepage_sizes;
2280                         hpi_idx++) {
2281                 struct hugepage_info *hpi;
2282                 uint64_t hugepage_sz;
2283
2284                 hpi = &internal_config.hugepage_info[hpi_idx];
2285                 hugepage_sz = hpi->hugepage_sz;
2286
2287                 for (i = 0; i < (int) rte_socket_count(); i++, cur_type++) {
2288                         int socket_id = rte_socket_id_by_idx(i);
2289
2290 #ifndef RTE_EAL_NUMA_AWARE_HUGEPAGES
2291                         /* we can still sort pages by socket in legacy mode */
2292                         if (!internal_config.legacy_mem && socket_id > 0)
2293                                 break;
2294 #endif
2295                         memtypes[cur_type].page_sz = hugepage_sz;
2296                         memtypes[cur_type].socket_id = socket_id;
2297
2298                         RTE_LOG(DEBUG, EAL, "Detected memory type: "
2299                                 "socket_id:%u hugepage_sz:%" PRIu64 "\n",
2300                                 socket_id, hugepage_sz);
2301                 }
2302         }
2303         /* number of memtypes could have been lower due to no NUMA support */
2304         n_memtypes = cur_type;
2305
2306         /* set up limits for types */
2307         max_mem = (uint64_t)RTE_MAX_MEM_MB << 20;
2308         max_mem_per_type = RTE_MIN((uint64_t)RTE_MAX_MEM_MB_PER_TYPE << 20,
2309                         max_mem / n_memtypes);
2310         /*
2311          * limit maximum number of segment lists per type to ensure there's
2312          * space for memseg lists for all NUMA nodes with all page sizes
2313          */
2314         max_seglists_per_type = RTE_MAX_MEMSEG_LISTS / n_memtypes;
2315
2316         if (max_seglists_per_type == 0) {
2317                 RTE_LOG(ERR, EAL, "Cannot accommodate all memory types, please increase %s\n",
2318                         RTE_STR(CONFIG_RTE_MAX_MEMSEG_LISTS));
2319                 goto out;
2320         }
2321
2322         /* go through all mem types and create segment lists */
2323         msl_idx = 0;
2324         for (cur_type = 0; cur_type < n_memtypes; cur_type++) {
2325                 unsigned int cur_seglist, n_seglists, n_segs;
2326                 unsigned int max_segs_per_type, max_segs_per_list;
2327                 struct memtype *type = &memtypes[cur_type];
2328                 uint64_t max_mem_per_list, pagesz;
2329                 int socket_id;
2330
2331                 pagesz = type->page_sz;
2332                 socket_id = type->socket_id;
2333
2334                 /*
2335                  * we need to create segment lists for this type. we must take
2336                  * into account the following things:
2337                  *
2338                  * 1. total amount of memory we can use for this memory type
2339                  * 2. total amount of memory per memseg list allowed
2340                  * 3. number of segments needed to fit the amount of memory
2341                  * 4. number of segments allowed per type
2342                  * 5. number of segments allowed per memseg list
2343                  * 6. number of memseg lists we are allowed to take up
2344                  */
2345
2346                 /* calculate how much segments we will need in total */
2347                 max_segs_per_type = max_mem_per_type / pagesz;
2348                 /* limit number of segments to maximum allowed per type */
2349                 max_segs_per_type = RTE_MIN(max_segs_per_type,
2350                                 (unsigned int)RTE_MAX_MEMSEG_PER_TYPE);
2351                 /* limit number of segments to maximum allowed per list */
2352                 max_segs_per_list = RTE_MIN(max_segs_per_type,
2353                                 (unsigned int)RTE_MAX_MEMSEG_PER_LIST);
2354
2355                 /* calculate how much memory we can have per segment list */
2356                 max_mem_per_list = RTE_MIN(max_segs_per_list * pagesz,
2357                                 (uint64_t)RTE_MAX_MEM_MB_PER_LIST << 20);
2358
2359                 /* calculate how many segments each segment list will have */
2360                 n_segs = RTE_MIN(max_segs_per_list, max_mem_per_list / pagesz);
2361
2362                 /* calculate how many segment lists we can have */
2363                 n_seglists = RTE_MIN(max_segs_per_type / n_segs,
2364                                 max_mem_per_type / max_mem_per_list);
2365
2366                 /* limit number of segment lists according to our maximum */
2367                 n_seglists = RTE_MIN(n_seglists, max_seglists_per_type);
2368
2369                 RTE_LOG(DEBUG, EAL, "Creating %i segment lists: "
2370                                 "n_segs:%i socket_id:%i hugepage_sz:%" PRIu64 "\n",
2371                         n_seglists, n_segs, socket_id, pagesz);
2372
2373                 /* create all segment lists */
2374                 for (cur_seglist = 0; cur_seglist < n_seglists; cur_seglist++) {
2375                         if (msl_idx >= RTE_MAX_MEMSEG_LISTS) {
2376                                 RTE_LOG(ERR, EAL,
2377                                         "No more space in memseg lists, please increase %s\n",
2378                                         RTE_STR(CONFIG_RTE_MAX_MEMSEG_LISTS));
2379                                 goto out;
2380                         }
2381                         msl = &mcfg->memsegs[msl_idx++];
2382
2383                         if (alloc_memseg_list(msl, pagesz, n_segs,
2384                                         socket_id, cur_seglist))
2385                                 goto out;
2386
2387                         if (alloc_va_space(msl)) {
2388                                 RTE_LOG(ERR, EAL, "Cannot allocate VA space for memseg list\n");
2389                                 goto out;
2390                         }
2391                 }
2392         }
2393         /* we're successful */
2394         ret = 0;
2395 out:
2396         free(memtypes);
2397         return ret;
2398 }
2399
2400 static int
2401 memseg_secondary_init(void)
2402 {
2403         struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
2404         int msl_idx = 0;
2405         struct rte_memseg_list *msl;
2406
2407         for (msl_idx = 0; msl_idx < RTE_MAX_MEMSEG_LISTS; msl_idx++) {
2408
2409                 msl = &mcfg->memsegs[msl_idx];
2410
2411                 /* skip empty memseg lists */
2412                 if (msl->memseg_arr.len == 0)
2413                         continue;
2414
2415                 if (rte_fbarray_attach(&msl->memseg_arr)) {
2416                         RTE_LOG(ERR, EAL, "Cannot attach to primary process memseg lists\n");
2417                         return -1;
2418                 }
2419
2420                 /* preallocate VA space */
2421                 if (alloc_va_space(msl)) {
2422                         RTE_LOG(ERR, EAL, "Cannot preallocate VA space for hugepage memory\n");
2423                         return -1;
2424                 }
2425         }
2426
2427         return 0;
2428 }
2429
2430 int
2431 rte_eal_memseg_init(void)
2432 {
2433         /* increase rlimit to maximum */
2434         struct rlimit lim;
2435
2436         if (getrlimit(RLIMIT_NOFILE, &lim) == 0) {
2437                 /* set limit to maximum */
2438                 lim.rlim_cur = lim.rlim_max;
2439
2440                 if (setrlimit(RLIMIT_NOFILE, &lim) < 0) {
2441                         RTE_LOG(DEBUG, EAL, "Setting maximum number of open files failed: %s\n",
2442                                         strerror(errno));
2443                 } else {
2444                         RTE_LOG(DEBUG, EAL, "Setting maximum number of open files to %"
2445                                         PRIu64 "\n",
2446                                         (uint64_t)lim.rlim_cur);
2447                 }
2448         } else {
2449                 RTE_LOG(ERR, EAL, "Cannot get current resource limits\n");
2450         }
2451 #ifndef RTE_EAL_NUMA_AWARE_HUGEPAGES
2452         if (!internal_config.legacy_mem && rte_socket_count() > 1) {
2453                 RTE_LOG(WARNING, EAL, "DPDK is running on a NUMA system, but is compiled without NUMA support.\n");
2454                 RTE_LOG(WARNING, EAL, "This will have adverse consequences for performance and usability.\n");
2455                 RTE_LOG(WARNING, EAL, "Please use --"OPT_LEGACY_MEM" option, or recompile with NUMA support.\n");
2456         }
2457 #endif
2458
2459         return rte_eal_process_type() == RTE_PROC_PRIMARY ?
2460 #ifndef RTE_ARCH_64
2461                         memseg_primary_init_32() :
2462 #else
2463                         memseg_primary_init() :
2464 #endif
2465                         memseg_secondary_init();
2466 }