1 #include "kvm/builtin-run.h" 2 3 #include "kvm/builtin-setup.h" 4 #include "kvm/virtio-balloon.h" 5 #include "kvm/virtio-console.h" 6 #include "kvm/parse-options.h" 7 #include "kvm/8250-serial.h" 8 #include "kvm/framebuffer.h" 9 #include "kvm/disk-image.h" 10 #include "kvm/threadpool.h" 11 #include "kvm/virtio-scsi.h" 12 #include "kvm/virtio-blk.h" 13 #include "kvm/virtio-net.h" 14 #include "kvm/virtio-rng.h" 15 #include "kvm/ioeventfd.h" 16 #include "kvm/virtio-9p.h" 17 #include "kvm/barrier.h" 18 #include "kvm/kvm-cpu.h" 19 #include "kvm/ioport.h" 20 #include "kvm/symbol.h" 21 #include "kvm/i8042.h" 22 #include "kvm/mutex.h" 23 #include "kvm/term.h" 24 #include "kvm/util.h" 25 #include "kvm/strbuf.h" 26 #include "kvm/vesa.h" 27 #include "kvm/irq.h" 28 #include "kvm/kvm.h" 29 #include "kvm/pci.h" 30 #include "kvm/rtc.h" 31 #include "kvm/sdl.h" 32 #include "kvm/vnc.h" 33 #include "kvm/guest_compat.h" 34 #include "kvm/pci-shmem.h" 35 #include "kvm/kvm-ipc.h" 36 #include "kvm/builtin-debug.h" 37 38 #include <linux/types.h> 39 #include <linux/err.h> 40 41 #include <sys/utsname.h> 42 #include <sys/types.h> 43 #include <sys/stat.h> 44 #include <termios.h> 45 #include <signal.h> 46 #include <stdlib.h> 47 #include <string.h> 48 #include <unistd.h> 49 #include <ctype.h> 50 #include <stdio.h> 51 52 #define DEFAULT_KVM_DEV "/dev/kvm" 53 #define DEFAULT_CONSOLE "serial" 54 #define DEFAULT_NETWORK "user" 55 #define DEFAULT_HOST_ADDR "192.168.33.1" 56 #define DEFAULT_GUEST_ADDR "192.168.33.15" 57 #define DEFAULT_GUEST_MAC "02:15:15:15:15:15" 58 #define DEFAULT_HOST_MAC "02:01:01:01:01:01" 59 #define DEFAULT_SCRIPT "none" 60 const char *DEFAULT_SANDBOX_FILENAME = "guest/sandbox.sh"; 61 62 #define MB_SHIFT (20) 63 #define KB_SHIFT (10) 64 #define GB_SHIFT (30) 65 #define MIN_RAM_SIZE_MB (64ULL) 66 #define MIN_RAM_SIZE_BYTE (MIN_RAM_SIZE_MB << MB_SHIFT) 67 68 struct kvm *kvm; 69 struct kvm_cpu **kvm_cpus; 70 __thread struct kvm_cpu *current_kvm_cpu; 71 72 struct kvm_config { 73 struct disk_image_params disk_image[MAX_DISK_IMAGES]; 74 u64 ram_size; 75 u8 image_count; 76 u8 num_net_devices; 77 bool virtio_rng; 78 const char *kernel_cmdline; 79 const char *kernel_filename; 80 const char *vmlinux_filename; 81 const char *initrd_filename; 82 const char *firmware_filename; 83 const char *console; 84 const char *dev; 85 const char *network; 86 const char *host_ip; 87 const char *guest_ip; 88 const char *guest_mac; 89 const char *host_mac; 90 const char *script; 91 const char *guest_name; 92 const char *sandbox; 93 const char *hugetlbfs_path; 94 const char *custom_rootfs_name; 95 struct virtio_net_params *net_params; 96 bool single_step; 97 bool vnc; 98 bool sdl; 99 bool balloon; 100 bool using_rootfs; 101 bool custom_rootfs; 102 bool no_net; 103 bool no_dhcp; 104 } cfg; 105 106 extern bool ioport_debug; 107 extern bool mmio_debug; 108 static int kvm_run_wrapper; 109 extern int active_console; 110 extern int debug_iodelay; 111 112 bool do_debug_print = false; 113 114 static int nrcpus; 115 static int vidmode = -1; 116 117 extern char _binary_guest_init_start; 118 extern char _binary_guest_init_size; 119 120 static const char * const run_usage[] = { 121 "lkvm run [<options>] [<kernel image>]", 122 NULL 123 }; 124 125 enum { 126 KVM_RUN_DEFAULT, 127 KVM_RUN_SANDBOX, 128 }; 129 130 void kvm_run_set_wrapper_sandbox(void) 131 { 132 kvm_run_wrapper = KVM_RUN_SANDBOX; 133 } 134 135 static int img_name_parser(const struct option *opt, const char *arg, int unset) 136 { 137 char path[PATH_MAX]; 138 const char *cur; 139 struct stat st; 140 char *sep; 141 142 if (stat(arg, &st) == 0 && 143 S_ISDIR(st.st_mode)) { 144 char tmp[PATH_MAX]; 145 146 if (cfg.using_rootfs) 147 die("Please use only one rootfs directory atmost"); 148 149 if (realpath(arg, tmp) == 0 || 150 virtio_9p__register(kvm, tmp, "/dev/root") < 0) 151 die("Unable to initialize virtio 9p"); 152 cfg.using_rootfs = 1; 153 return 0; 154 } 155 156 snprintf(path, PATH_MAX, "%s%s", kvm__get_dir(), arg); 157 158 if (stat(path, &st) == 0 && 159 S_ISDIR(st.st_mode)) { 160 char tmp[PATH_MAX]; 161 162 if (cfg.using_rootfs) 163 die("Please use only one rootfs directory atmost"); 164 165 if (realpath(path, tmp) == 0 || 166 virtio_9p__register(kvm, tmp, "/dev/root") < 0) 167 die("Unable to initialize virtio 9p"); 168 if (virtio_9p__register(kvm, "/", "hostfs") < 0) 169 die("Unable to initialize virtio 9p"); 170 kvm_setup_resolv(arg); 171 cfg.using_rootfs = cfg.custom_rootfs = 1; 172 cfg.custom_rootfs_name = arg; 173 return 0; 174 } 175 176 if (cfg.image_count >= MAX_DISK_IMAGES) 177 die("Currently only 4 images are supported"); 178 179 cfg.disk_image[cfg.image_count].filename = arg; 180 cur = arg; 181 182 if (strncmp(arg, "scsi:", 5) == 0) { 183 sep = strstr(arg, ":"); 184 if (sep) 185 cfg.disk_image[cfg.image_count].wwpn = sep + 1; 186 sep = strstr(sep + 1, ":"); 187 if (sep) { 188 *sep = 0; 189 cfg.disk_image[cfg.image_count].tpgt = sep + 1; 190 } 191 cur = sep + 1; 192 } 193 194 do { 195 sep = strstr(cur, ","); 196 if (sep) { 197 if (strncmp(sep + 1, "ro", 2) == 0) 198 cfg.disk_image[cfg.image_count].readonly = true; 199 else if (strncmp(sep + 1, "direct", 6) == 0) 200 cfg.disk_image[cfg.image_count].direct = true; 201 *sep = 0; 202 cur = sep + 1; 203 } 204 } while (sep); 205 206 cfg.image_count++; 207 208 return 0; 209 } 210 211 static int virtio_9p_rootdir_parser(const struct option *opt, const char *arg, int unset) 212 { 213 char *tag_name; 214 char tmp[PATH_MAX]; 215 216 /* 217 * 9p dir can be of the form dirname,tag_name or 218 * just dirname. In the later case we use the 219 * default tag name 220 */ 221 tag_name = strstr(arg, ","); 222 if (tag_name) { 223 *tag_name = '\0'; 224 tag_name++; 225 } 226 if (realpath(arg, tmp)) { 227 if (virtio_9p__register(kvm, tmp, tag_name) < 0) 228 die("Unable to initialize virtio 9p"); 229 } else 230 die("Failed resolving 9p path"); 231 return 0; 232 } 233 234 static int tty_parser(const struct option *opt, const char *arg, int unset) 235 { 236 int tty = atoi(arg); 237 238 term_set_tty(tty); 239 240 return 0; 241 } 242 243 static inline void str_to_mac(const char *str, char *mac) 244 { 245 sscanf(str, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", 246 mac, mac+1, mac+2, mac+3, mac+4, mac+5); 247 } 248 static int set_net_param(struct virtio_net_params *p, const char *param, 249 const char *val) 250 { 251 if (strcmp(param, "guest_mac") == 0) { 252 str_to_mac(val, p->guest_mac); 253 } else if (strcmp(param, "mode") == 0) { 254 if (!strncmp(val, "user", 4)) { 255 int i; 256 257 for (i = 0; i < cfg.num_net_devices; i++) 258 if (cfg.net_params[i].mode == NET_MODE_USER) 259 die("Only one usermode network device allowed at a time"); 260 p->mode = NET_MODE_USER; 261 } else if (!strncmp(val, "tap", 3)) { 262 p->mode = NET_MODE_TAP; 263 } else if (!strncmp(val, "none", 4)) { 264 cfg.no_net = 1; 265 return -1; 266 } else 267 die("Unknown network mode %s, please use user, tap or none", cfg.network); 268 } else if (strcmp(param, "script") == 0) { 269 p->script = strdup(val); 270 } else if (strcmp(param, "guest_ip") == 0) { 271 p->guest_ip = strdup(val); 272 } else if (strcmp(param, "host_ip") == 0) { 273 p->host_ip = strdup(val); 274 } else if (strcmp(param, "trans") == 0) { 275 p->trans = strdup(val); 276 } else if (strcmp(param, "vhost") == 0) { 277 p->vhost = atoi(val); 278 } else if (strcmp(param, "fd") == 0) { 279 p->fd = atoi(val); 280 } else 281 die("Unknown network parameter %s", param); 282 283 return 0; 284 } 285 286 static int netdev_parser(const struct option *opt, const char *arg, int unset) 287 { 288 struct virtio_net_params p; 289 char *buf = NULL, *cmd = NULL, *cur = NULL; 290 bool on_cmd = true; 291 292 if (arg) { 293 buf = strdup(arg); 294 if (buf == NULL) 295 die("Failed allocating new net buffer"); 296 cur = strtok(buf, ",="); 297 } 298 299 p = (struct virtio_net_params) { 300 .guest_ip = DEFAULT_GUEST_ADDR, 301 .host_ip = DEFAULT_HOST_ADDR, 302 .script = DEFAULT_SCRIPT, 303 .mode = NET_MODE_TAP, 304 }; 305 306 str_to_mac(DEFAULT_GUEST_MAC, p.guest_mac); 307 p.guest_mac[5] += cfg.num_net_devices; 308 309 while (cur) { 310 if (on_cmd) { 311 cmd = cur; 312 } else { 313 if (set_net_param(&p, cmd, cur) < 0) 314 goto done; 315 } 316 on_cmd = !on_cmd; 317 318 cur = strtok(NULL, ",="); 319 }; 320 321 cfg.num_net_devices++; 322 323 cfg.net_params = realloc(cfg.net_params, cfg.num_net_devices * sizeof(*cfg.net_params)); 324 if (cfg.net_params == NULL) 325 die("Failed adding new network device"); 326 327 cfg.net_params[cfg.num_net_devices - 1] = p; 328 329 done: 330 free(buf); 331 return 0; 332 } 333 334 static int shmem_parser(const struct option *opt, const char *arg, int unset) 335 { 336 const u64 default_size = SHMEM_DEFAULT_SIZE; 337 const u64 default_phys_addr = SHMEM_DEFAULT_ADDR; 338 const char *default_handle = SHMEM_DEFAULT_HANDLE; 339 struct shmem_info *si = malloc(sizeof(struct shmem_info)); 340 u64 phys_addr; 341 u64 size; 342 char *handle = NULL; 343 int create = 0; 344 const char *p = arg; 345 char *next; 346 int base = 10; 347 int verbose = 0; 348 349 const int skip_pci = strlen("pci:"); 350 if (verbose) 351 pr_info("shmem_parser(%p,%s,%d)", opt, arg, unset); 352 /* parse out optional addr family */ 353 if (strcasestr(p, "pci:")) { 354 p += skip_pci; 355 } else if (strcasestr(p, "mem:")) { 356 die("I can't add to E820 map yet.\n"); 357 } 358 /* parse out physical addr */ 359 base = 10; 360 if (strcasestr(p, "0x")) 361 base = 16; 362 phys_addr = strtoll(p, &next, base); 363 if (next == p && phys_addr == 0) { 364 pr_info("shmem: no physical addr specified, using default."); 365 phys_addr = default_phys_addr; 366 } 367 if (*next != ':' && *next != '\0') 368 die("shmem: unexpected chars after phys addr.\n"); 369 if (*next == '\0') 370 p = next; 371 else 372 p = next + 1; 373 /* parse out size */ 374 base = 10; 375 if (strcasestr(p, "0x")) 376 base = 16; 377 size = strtoll(p, &next, base); 378 if (next == p && size == 0) { 379 pr_info("shmem: no size specified, using default."); 380 size = default_size; 381 } 382 /* look for [KMGkmg][Bb]* uses base 2. */ 383 int skip_B = 0; 384 if (strspn(next, "KMGkmg")) { /* might have a prefix */ 385 if (*(next + 1) == 'B' || *(next + 1) == 'b') 386 skip_B = 1; 387 switch (*next) { 388 case 'K': 389 case 'k': 390 size = size << KB_SHIFT; 391 break; 392 case 'M': 393 case 'm': 394 size = size << MB_SHIFT; 395 break; 396 case 'G': 397 case 'g': 398 size = size << GB_SHIFT; 399 break; 400 default: 401 die("shmem: bug in detecting size prefix."); 402 break; 403 } 404 next += 1 + skip_B; 405 } 406 if (*next != ':' && *next != '\0') { 407 die("shmem: unexpected chars after phys size. <%c><%c>\n", 408 *next, *p); 409 } 410 if (*next == '\0') 411 p = next; 412 else 413 p = next + 1; 414 /* parse out optional shmem handle */ 415 const int skip_handle = strlen("handle="); 416 next = strcasestr(p, "handle="); 417 if (*p && next) { 418 if (p != next) 419 die("unexpected chars before handle\n"); 420 p += skip_handle; 421 next = strchrnul(p, ':'); 422 if (next - p) { 423 handle = malloc(next - p + 1); 424 strncpy(handle, p, next - p); 425 handle[next - p] = '\0'; /* just in case. */ 426 } 427 if (*next == '\0') 428 p = next; 429 else 430 p = next + 1; 431 } 432 /* parse optional create flag to see if we should create shm seg. */ 433 if (*p && strcasestr(p, "create")) { 434 create = 1; 435 p += strlen("create"); 436 } 437 if (*p != '\0') 438 die("shmem: unexpected trailing chars\n"); 439 if (handle == NULL) { 440 handle = malloc(strlen(default_handle) + 1); 441 strcpy(handle, default_handle); 442 } 443 if (verbose) { 444 pr_info("shmem: phys_addr = %llx", phys_addr); 445 pr_info("shmem: size = %llx", size); 446 pr_info("shmem: handle = %s", handle); 447 pr_info("shmem: create = %d", create); 448 } 449 450 si->phys_addr = phys_addr; 451 si->size = size; 452 si->handle = handle; 453 si->create = create; 454 pci_shmem__register_mem(si); /* ownership of si, etc. passed on. */ 455 return 0; 456 } 457 458 static const struct option options[] = { 459 OPT_GROUP("Basic options:"), 460 OPT_STRING('\0', "name", &cfg.guest_name, "guest name", 461 "A name for the guest"), 462 OPT_INTEGER('c', "cpus", &nrcpus, "Number of CPUs"), 463 OPT_U64('m', "mem", &cfg.ram_size, "Virtual machine memory size in MiB."), 464 OPT_CALLBACK('\0', "shmem", NULL, 465 "[pci:]<addr>:<size>[:handle=<handle>][:create]", 466 "Share host shmem with guest via pci device", 467 shmem_parser), 468 OPT_CALLBACK('d', "disk", NULL, "image or rootfs_dir", "Disk image or rootfs directory", img_name_parser), 469 OPT_BOOLEAN('\0', "balloon", &cfg.balloon, "Enable virtio balloon"), 470 OPT_BOOLEAN('\0', "vnc", &cfg.vnc, "Enable VNC framebuffer"), 471 OPT_BOOLEAN('\0', "sdl", &cfg.sdl, "Enable SDL framebuffer"), 472 OPT_BOOLEAN('\0', "rng", &cfg.virtio_rng, "Enable virtio Random Number Generator"), 473 OPT_CALLBACK('\0', "9p", NULL, "dir_to_share,tag_name", 474 "Enable virtio 9p to share files between host and guest", virtio_9p_rootdir_parser), 475 OPT_STRING('\0', "console", &cfg.console, "serial, virtio or hv", 476 "Console to use"), 477 OPT_STRING('\0', "dev", &cfg.dev, "device_file", "KVM device file"), 478 OPT_CALLBACK('\0', "tty", NULL, "tty id", 479 "Remap guest TTY into a pty on the host", 480 tty_parser), 481 OPT_STRING('\0', "sandbox", &cfg.sandbox, "script", 482 "Run this script when booting into custom rootfs"), 483 OPT_STRING('\0', "hugetlbfs", &cfg.hugetlbfs_path, "path", "Hugetlbfs path"), 484 485 OPT_GROUP("Kernel options:"), 486 OPT_STRING('k', "kernel", &cfg.kernel_filename, "kernel", 487 "Kernel to boot in virtual machine"), 488 OPT_STRING('i', "initrd", &cfg.initrd_filename, "initrd", 489 "Initial RAM disk image"), 490 OPT_STRING('p', "params", &cfg.kernel_cmdline, "params", 491 "Kernel command line arguments"), 492 OPT_STRING('f', "firmware", &cfg.firmware_filename, "firmware", 493 "Firmware image to boot in virtual machine"), 494 495 OPT_GROUP("Networking options:"), 496 OPT_CALLBACK_DEFAULT('n', "network", NULL, "network params", 497 "Create a new guest NIC", 498 netdev_parser, NULL), 499 OPT_BOOLEAN('\0', "no-dhcp", &cfg.no_dhcp, "Disable kernel DHCP in rootfs mode"), 500 501 OPT_GROUP("BIOS options:"), 502 OPT_INTEGER('\0', "vidmode", &vidmode, 503 "Video mode"), 504 505 OPT_GROUP("Debug options:"), 506 OPT_BOOLEAN('\0', "debug", &do_debug_print, 507 "Enable debug messages"), 508 OPT_BOOLEAN('\0', "debug-single-step", &cfg.single_step, 509 "Enable single stepping"), 510 OPT_BOOLEAN('\0', "debug-ioport", &ioport_debug, 511 "Enable ioport debugging"), 512 OPT_BOOLEAN('\0', "debug-mmio", &mmio_debug, 513 "Enable MMIO debugging"), 514 OPT_INTEGER('\0', "debug-iodelay", &debug_iodelay, 515 "Delay IO by millisecond"), 516 OPT_END() 517 }; 518 519 /* 520 * Serialize debug printout so that the output of multiple vcpus does not 521 * get mixed up: 522 */ 523 static int printout_done; 524 525 static void handle_sigusr1(int sig) 526 { 527 struct kvm_cpu *cpu = current_kvm_cpu; 528 int fd = kvm_cpu__get_debug_fd(); 529 530 if (!cpu || cpu->needs_nmi) 531 return; 532 533 dprintf(fd, "\n #\n # vCPU #%ld's dump:\n #\n", cpu->cpu_id); 534 kvm_cpu__show_registers(cpu); 535 kvm_cpu__show_code(cpu); 536 kvm_cpu__show_page_tables(cpu); 537 fflush(stdout); 538 printout_done = 1; 539 mb(); 540 } 541 542 /* Pause/resume the guest using SIGUSR2 */ 543 static int is_paused; 544 545 static void handle_pause(int fd, u32 type, u32 len, u8 *msg) 546 { 547 if (WARN_ON(len)) 548 return; 549 550 if (type == KVM_IPC_RESUME && is_paused) { 551 kvm->vm_state = KVM_VMSTATE_RUNNING; 552 kvm__continue(); 553 } else if (type == KVM_IPC_PAUSE && !is_paused) { 554 kvm->vm_state = KVM_VMSTATE_PAUSED; 555 ioctl(kvm->vm_fd, KVM_KVMCLOCK_CTRL); 556 kvm__pause(); 557 } else { 558 return; 559 } 560 561 is_paused = !is_paused; 562 } 563 564 static void handle_vmstate(int fd, u32 type, u32 len, u8 *msg) 565 { 566 int r = 0; 567 568 if (type == KVM_IPC_VMSTATE) 569 r = write(fd, &kvm->vm_state, sizeof(kvm->vm_state)); 570 571 if (r < 0) 572 pr_warning("Failed sending VMSTATE"); 573 } 574 575 static void handle_debug(int fd, u32 type, u32 len, u8 *msg) 576 { 577 int i; 578 struct debug_cmd_params *params; 579 u32 dbg_type; 580 u32 vcpu; 581 582 if (WARN_ON(type != KVM_IPC_DEBUG || len != sizeof(*params))) 583 return; 584 585 params = (void *)msg; 586 dbg_type = params->dbg_type; 587 vcpu = params->cpu; 588 589 if (dbg_type & KVM_DEBUG_CMD_TYPE_SYSRQ) 590 serial8250__inject_sysrq(kvm, params->sysrq); 591 592 if (dbg_type & KVM_DEBUG_CMD_TYPE_NMI) { 593 if ((int)vcpu >= kvm->nrcpus) 594 return; 595 596 kvm_cpus[vcpu]->needs_nmi = 1; 597 pthread_kill(kvm_cpus[vcpu]->thread, SIGUSR1); 598 } 599 600 if (!(dbg_type & KVM_DEBUG_CMD_TYPE_DUMP)) 601 return; 602 603 for (i = 0; i < nrcpus; i++) { 604 struct kvm_cpu *cpu = kvm_cpus[i]; 605 606 if (!cpu) 607 continue; 608 609 printout_done = 0; 610 611 kvm_cpu__set_debug_fd(fd); 612 pthread_kill(cpu->thread, SIGUSR1); 613 /* 614 * Wait for the vCPU to dump state before signalling 615 * the next thread. Since this is debug code it does 616 * not matter that we are burning CPU time a bit: 617 */ 618 while (!printout_done) 619 mb(); 620 } 621 622 close(fd); 623 624 serial8250__inject_sysrq(kvm, 'p'); 625 } 626 627 static void handle_sigalrm(int sig) 628 { 629 kvm__arch_periodic_poll(kvm); 630 } 631 632 static void handle_stop(int fd, u32 type, u32 len, u8 *msg) 633 { 634 if (WARN_ON(type != KVM_IPC_STOP || len)) 635 return; 636 637 kvm_cpu__reboot(); 638 } 639 640 static void *kvm_cpu_thread(void *arg) 641 { 642 current_kvm_cpu = arg; 643 644 if (kvm_cpu__start(current_kvm_cpu)) 645 goto panic_kvm; 646 647 return (void *) (intptr_t) 0; 648 649 panic_kvm: 650 fprintf(stderr, "KVM exit reason: %u (\"%s\")\n", 651 current_kvm_cpu->kvm_run->exit_reason, 652 kvm_exit_reasons[current_kvm_cpu->kvm_run->exit_reason]); 653 if (current_kvm_cpu->kvm_run->exit_reason == KVM_EXIT_UNKNOWN) 654 fprintf(stderr, "KVM exit code: 0x%Lu\n", 655 current_kvm_cpu->kvm_run->hw.hardware_exit_reason); 656 657 kvm_cpu__set_debug_fd(STDOUT_FILENO); 658 kvm_cpu__show_registers(current_kvm_cpu); 659 kvm_cpu__show_code(current_kvm_cpu); 660 kvm_cpu__show_page_tables(current_kvm_cpu); 661 662 return (void *) (intptr_t) 1; 663 } 664 665 static char kernel[PATH_MAX]; 666 667 static const char *host_kernels[] = { 668 "/boot/vmlinuz", 669 "/boot/bzImage", 670 NULL 671 }; 672 673 static const char *default_kernels[] = { 674 "./bzImage", 675 "arch/" BUILD_ARCH "/boot/bzImage", 676 "../../arch/" BUILD_ARCH "/boot/bzImage", 677 NULL 678 }; 679 680 static const char *default_vmlinux[] = { 681 "vmlinux", 682 "../../../vmlinux", 683 "../../vmlinux", 684 NULL 685 }; 686 687 static void kernel_usage_with_options(void) 688 { 689 const char **k; 690 struct utsname uts; 691 692 fprintf(stderr, "Fatal: could not find default kernel image in:\n"); 693 k = &default_kernels[0]; 694 while (*k) { 695 fprintf(stderr, "\t%s\n", *k); 696 k++; 697 } 698 699 if (uname(&uts) < 0) 700 return; 701 702 k = &host_kernels[0]; 703 while (*k) { 704 if (snprintf(kernel, PATH_MAX, "%s-%s", *k, uts.release) < 0) 705 return; 706 fprintf(stderr, "\t%s\n", kernel); 707 k++; 708 } 709 fprintf(stderr, "\nPlease see '%s run --help' for more options.\n\n", 710 KVM_BINARY_NAME); 711 } 712 713 static u64 host_ram_size(void) 714 { 715 long page_size; 716 long nr_pages; 717 718 nr_pages = sysconf(_SC_PHYS_PAGES); 719 if (nr_pages < 0) { 720 pr_warning("sysconf(_SC_PHYS_PAGES) failed"); 721 return 0; 722 } 723 724 page_size = sysconf(_SC_PAGE_SIZE); 725 if (page_size < 0) { 726 pr_warning("sysconf(_SC_PAGE_SIZE) failed"); 727 return 0; 728 } 729 730 return (nr_pages * page_size) >> MB_SHIFT; 731 } 732 733 /* 734 * If user didn't specify how much memory it wants to allocate for the guest, 735 * avoid filling the whole host RAM. 736 */ 737 #define RAM_SIZE_RATIO 0.8 738 739 static u64 get_ram_size(int nr_cpus) 740 { 741 u64 available; 742 u64 ram_size; 743 744 ram_size = 64 * (nr_cpus + 3); 745 746 available = host_ram_size() * RAM_SIZE_RATIO; 747 if (!available) 748 available = MIN_RAM_SIZE_MB; 749 750 if (ram_size > available) 751 ram_size = available; 752 753 return ram_size; 754 } 755 756 static const char *find_kernel(void) 757 { 758 const char **k; 759 struct stat st; 760 struct utsname uts; 761 762 k = &default_kernels[0]; 763 while (*k) { 764 if (stat(*k, &st) < 0 || !S_ISREG(st.st_mode)) { 765 k++; 766 continue; 767 } 768 strncpy(kernel, *k, PATH_MAX); 769 return kernel; 770 } 771 772 if (uname(&uts) < 0) 773 return NULL; 774 775 k = &host_kernels[0]; 776 while (*k) { 777 if (snprintf(kernel, PATH_MAX, "%s-%s", *k, uts.release) < 0) 778 return NULL; 779 780 if (stat(kernel, &st) < 0 || !S_ISREG(st.st_mode)) { 781 k++; 782 continue; 783 } 784 return kernel; 785 786 } 787 return NULL; 788 } 789 790 static const char *find_vmlinux(void) 791 { 792 const char **vmlinux; 793 794 vmlinux = &default_vmlinux[0]; 795 while (*vmlinux) { 796 struct stat st; 797 798 if (stat(*vmlinux, &st) < 0 || !S_ISREG(st.st_mode)) { 799 vmlinux++; 800 continue; 801 } 802 return *vmlinux; 803 } 804 return NULL; 805 } 806 807 void kvm_run_help(void) 808 { 809 usage_with_options(run_usage, options); 810 } 811 812 static int kvm_setup_guest_init(void) 813 { 814 const char *rootfs = cfg.custom_rootfs_name; 815 char tmp[PATH_MAX]; 816 size_t size; 817 int fd, ret; 818 char *data; 819 820 /* Setup /virt/init */ 821 size = (size_t)&_binary_guest_init_size; 822 data = (char *)&_binary_guest_init_start; 823 snprintf(tmp, PATH_MAX, "%s%s/virt/init", kvm__get_dir(), rootfs); 824 remove(tmp); 825 fd = open(tmp, O_CREAT | O_WRONLY, 0755); 826 if (fd < 0) 827 die("Fail to setup %s", tmp); 828 ret = xwrite(fd, data, size); 829 if (ret < 0) 830 die("Fail to setup %s", tmp); 831 close(fd); 832 833 return 0; 834 } 835 836 static int kvm_run_set_sandbox(void) 837 { 838 const char *guestfs_name = cfg.custom_rootfs_name; 839 char path[PATH_MAX], script[PATH_MAX], *tmp; 840 841 snprintf(path, PATH_MAX, "%s%s/virt/sandbox.sh", kvm__get_dir(), guestfs_name); 842 843 remove(path); 844 845 if (cfg.sandbox == NULL) 846 return 0; 847 848 tmp = realpath(cfg.sandbox, NULL); 849 if (tmp == NULL) 850 return -ENOMEM; 851 852 snprintf(script, PATH_MAX, "/host/%s", tmp); 853 free(tmp); 854 855 return symlink(script, path); 856 } 857 858 static void kvm_write_sandbox_cmd_exactly(int fd, const char *arg) 859 { 860 const char *single_quote; 861 862 if (!*arg) { /* zero length string */ 863 if (write(fd, "''", 2) <= 0) 864 die("Failed writing sandbox script"); 865 return; 866 } 867 868 while (*arg) { 869 single_quote = strchrnul(arg, '\''); 870 871 /* write non-single-quote string as #('string') */ 872 if (arg != single_quote) { 873 if (write(fd, "'", 1) <= 0 || 874 write(fd, arg, single_quote - arg) <= 0 || 875 write(fd, "'", 1) <= 0) 876 die("Failed writing sandbox script"); 877 } 878 879 /* write single quote as #("'") */ 880 if (*single_quote) { 881 if (write(fd, "\"'\"", 3) <= 0) 882 die("Failed writing sandbox script"); 883 } else 884 break; 885 886 arg = single_quote + 1; 887 } 888 } 889 890 static void resolve_program(const char *src, char *dst, size_t len) 891 { 892 struct stat st; 893 int err; 894 895 err = stat(src, &st); 896 897 if (!err && S_ISREG(st.st_mode)) { 898 char resolved_path[PATH_MAX]; 899 900 if (!realpath(src, resolved_path)) 901 die("Unable to resolve program %s: %s\n", src, strerror(errno)); 902 903 snprintf(dst, len, "/host%s", resolved_path); 904 } else 905 strncpy(dst, src, len); 906 } 907 908 static void kvm_run_write_sandbox_cmd(const char **argv, int argc) 909 { 910 const char script_hdr[] = "#! /bin/bash\n\n"; 911 char program[PATH_MAX]; 912 int fd; 913 914 remove(cfg.sandbox); 915 916 fd = open(cfg.sandbox, O_RDWR | O_CREAT, 0777); 917 if (fd < 0) 918 die("Failed creating sandbox script"); 919 920 if (write(fd, script_hdr, sizeof(script_hdr) - 1) <= 0) 921 die("Failed writing sandbox script"); 922 923 resolve_program(argv[0], program, PATH_MAX); 924 kvm_write_sandbox_cmd_exactly(fd, program); 925 926 argv++; 927 argc--; 928 929 while (argc) { 930 if (write(fd, " ", 1) <= 0) 931 die("Failed writing sandbox script"); 932 933 kvm_write_sandbox_cmd_exactly(fd, argv[0]); 934 argv++; 935 argc--; 936 } 937 if (write(fd, "\n", 1) <= 0) 938 die("Failed writing sandbox script"); 939 940 close(fd); 941 } 942 943 static int kvm_cmd_run_init(int argc, const char **argv) 944 { 945 static char real_cmdline[2048], default_name[20]; 946 struct framebuffer *fb = NULL; 947 unsigned int nr_online_cpus; 948 int max_cpus, recommended_cpus; 949 int i, r; 950 951 signal(SIGALRM, handle_sigalrm); 952 kvm_ipc__register_handler(KVM_IPC_DEBUG, handle_debug); 953 signal(SIGUSR1, handle_sigusr1); 954 kvm_ipc__register_handler(KVM_IPC_PAUSE, handle_pause); 955 kvm_ipc__register_handler(KVM_IPC_RESUME, handle_pause); 956 kvm_ipc__register_handler(KVM_IPC_STOP, handle_stop); 957 kvm_ipc__register_handler(KVM_IPC_VMSTATE, handle_vmstate); 958 959 nr_online_cpus = sysconf(_SC_NPROCESSORS_ONLN); 960 cfg.custom_rootfs_name = "default"; 961 962 while (argc != 0) { 963 argc = parse_options(argc, argv, options, run_usage, 964 PARSE_OPT_STOP_AT_NON_OPTION | 965 PARSE_OPT_KEEP_DASHDASH); 966 if (argc != 0) { 967 /* Cusrom options, should have been handled elsewhere */ 968 if (strcmp(argv[0], "--") == 0) { 969 if (kvm_run_wrapper == KVM_RUN_SANDBOX) { 970 cfg.sandbox = DEFAULT_SANDBOX_FILENAME; 971 kvm_run_write_sandbox_cmd(argv+1, argc-1); 972 break; 973 } 974 } 975 976 if ((kvm_run_wrapper == KVM_RUN_DEFAULT && cfg.kernel_filename) || 977 (kvm_run_wrapper == KVM_RUN_SANDBOX && cfg.sandbox)) { 978 fprintf(stderr, "Cannot handle parameter: " 979 "%s\n", argv[0]); 980 usage_with_options(run_usage, options); 981 return -EINVAL; 982 } 983 if (kvm_run_wrapper == KVM_RUN_SANDBOX) { 984 /* 985 * first unhandled parameter is treated as 986 * sandbox command 987 */ 988 cfg.sandbox = DEFAULT_SANDBOX_FILENAME; 989 kvm_run_write_sandbox_cmd(argv, argc); 990 } else { 991 /* 992 * first unhandled parameter is treated as a kernel 993 * image 994 */ 995 cfg.kernel_filename = argv[0]; 996 } 997 argv++; 998 argc--; 999 } 1000 1001 } 1002 1003 if (!cfg.kernel_filename) 1004 cfg.kernel_filename = find_kernel(); 1005 1006 if (!cfg.kernel_filename) { 1007 kernel_usage_with_options(); 1008 return -EINVAL; 1009 } 1010 1011 cfg.vmlinux_filename = find_vmlinux(); 1012 1013 if (nrcpus == 0) 1014 nrcpus = nr_online_cpus; 1015 1016 if (!cfg.ram_size) 1017 cfg.ram_size = get_ram_size(nrcpus); 1018 1019 if (cfg.ram_size < MIN_RAM_SIZE_MB) 1020 die("Not enough memory specified: %lluMB (min %lluMB)", cfg.ram_size, MIN_RAM_SIZE_MB); 1021 1022 if (cfg.ram_size > host_ram_size()) 1023 pr_warning("Guest memory size %lluMB exceeds host physical RAM size %lluMB", cfg.ram_size, host_ram_size()); 1024 1025 cfg.ram_size <<= MB_SHIFT; 1026 1027 if (!cfg.dev) 1028 cfg.dev = DEFAULT_KVM_DEV; 1029 1030 if (!cfg.console) 1031 cfg.console = DEFAULT_CONSOLE; 1032 1033 if (!strncmp(cfg.console, "virtio", 6)) 1034 active_console = CONSOLE_VIRTIO; 1035 else if (!strncmp(cfg.console, "serial", 6)) 1036 active_console = CONSOLE_8250; 1037 else if (!strncmp(cfg.console, "hv", 2)) 1038 active_console = CONSOLE_HV; 1039 else 1040 pr_warning("No console!"); 1041 1042 if (!cfg.host_ip) 1043 cfg.host_ip = DEFAULT_HOST_ADDR; 1044 1045 if (!cfg.guest_ip) 1046 cfg.guest_ip = DEFAULT_GUEST_ADDR; 1047 1048 if (!cfg.guest_mac) 1049 cfg.guest_mac = DEFAULT_GUEST_MAC; 1050 1051 if (!cfg.host_mac) 1052 cfg.host_mac = DEFAULT_HOST_MAC; 1053 1054 if (!cfg.script) 1055 cfg.script = DEFAULT_SCRIPT; 1056 1057 term_init(); 1058 1059 if (!cfg.guest_name) { 1060 if (cfg.custom_rootfs) { 1061 cfg.guest_name = cfg.custom_rootfs_name; 1062 } else { 1063 sprintf(default_name, "guest-%u", getpid()); 1064 cfg.guest_name = default_name; 1065 } 1066 } 1067 1068 kvm = kvm__init(cfg.dev, cfg.hugetlbfs_path, cfg.ram_size, cfg.guest_name); 1069 if (IS_ERR(kvm)) { 1070 r = PTR_ERR(kvm); 1071 goto fail; 1072 } 1073 1074 kvm->single_step = cfg.single_step; 1075 1076 r = ioeventfd__init(kvm); 1077 if (r < 0) { 1078 pr_err("ioeventfd__init() failed with error %d\n", r); 1079 goto fail; 1080 } 1081 1082 max_cpus = kvm__max_cpus(kvm); 1083 recommended_cpus = kvm__recommended_cpus(kvm); 1084 1085 if (nrcpus > max_cpus) { 1086 printf(" # Limit the number of CPUs to %d\n", max_cpus); 1087 nrcpus = max_cpus; 1088 } else if (nrcpus > recommended_cpus) { 1089 printf(" # Warning: The maximum recommended amount of VCPUs" 1090 " is %d\n", recommended_cpus); 1091 } 1092 1093 kvm->nrcpus = nrcpus; 1094 1095 /* Alloc one pointer too many, so array ends up 0-terminated */ 1096 kvm_cpus = calloc(nrcpus + 1, sizeof(void *)); 1097 if (!kvm_cpus) 1098 die("Couldn't allocate array for %d CPUs", nrcpus); 1099 1100 r = irq__init(kvm); 1101 if (r < 0) { 1102 pr_err("irq__init() failed with error %d\n", r); 1103 goto fail; 1104 } 1105 1106 r = pci__init(kvm); 1107 if (r < 0) { 1108 pr_err("pci__init() failed with error %d\n", r); 1109 goto fail; 1110 } 1111 1112 r = ioport__init(kvm); 1113 if (r < 0) { 1114 pr_err("ioport__init() failed with error %d\n", r); 1115 goto fail; 1116 } 1117 1118 /* 1119 * vidmode should be either specified 1120 * either set by default 1121 */ 1122 if (cfg.vnc || cfg.sdl) { 1123 if (vidmode == -1) 1124 vidmode = 0x312; 1125 } else { 1126 vidmode = 0; 1127 } 1128 1129 memset(real_cmdline, 0, sizeof(real_cmdline)); 1130 kvm__arch_set_cmdline(real_cmdline, cfg.vnc || cfg.sdl); 1131 1132 if (strlen(real_cmdline) > 0) 1133 strcat(real_cmdline, " "); 1134 1135 if (cfg.kernel_cmdline) 1136 strlcat(real_cmdline, cfg.kernel_cmdline, sizeof(real_cmdline)); 1137 1138 if (!cfg.using_rootfs && !cfg.disk_image[0].filename && !cfg.initrd_filename) { 1139 char tmp[PATH_MAX]; 1140 1141 kvm_setup_create_new(cfg.custom_rootfs_name); 1142 kvm_setup_resolv(cfg.custom_rootfs_name); 1143 1144 snprintf(tmp, PATH_MAX, "%s%s", kvm__get_dir(), "default"); 1145 if (virtio_9p__register(kvm, tmp, "/dev/root") < 0) 1146 die("Unable to initialize virtio 9p"); 1147 if (virtio_9p__register(kvm, "/", "hostfs") < 0) 1148 die("Unable to initialize virtio 9p"); 1149 cfg.using_rootfs = cfg.custom_rootfs = 1; 1150 } 1151 1152 if (cfg.using_rootfs) { 1153 strcat(real_cmdline, " root=/dev/root rw rootflags=rw,trans=virtio,version=9p2000.L rootfstype=9p"); 1154 if (cfg.custom_rootfs) { 1155 kvm_run_set_sandbox(); 1156 1157 strcat(real_cmdline, " init=/virt/init"); 1158 1159 if (!cfg.no_dhcp) 1160 strcat(real_cmdline, " ip=dhcp"); 1161 if (kvm_setup_guest_init()) 1162 die("Failed to setup init for guest."); 1163 } 1164 } else if (!strstr(real_cmdline, "root=")) { 1165 strlcat(real_cmdline, " root=/dev/vda rw ", sizeof(real_cmdline)); 1166 } 1167 1168 if (cfg.image_count) { 1169 kvm->nr_disks = cfg.image_count; 1170 kvm->disks = disk_image__open_all((struct disk_image_params *)&cfg.disk_image, cfg.image_count); 1171 if (IS_ERR(kvm->disks)) { 1172 r = PTR_ERR(kvm->disks); 1173 pr_err("disk_image__open_all() failed with error %ld\n", 1174 PTR_ERR(kvm->disks)); 1175 goto fail; 1176 } 1177 } 1178 1179 printf(" # %s run -k %s -m %Lu -c %d --name %s\n", KVM_BINARY_NAME, 1180 cfg.kernel_filename, cfg.ram_size / 1024 / 1024, nrcpus, cfg.guest_name); 1181 1182 if (!cfg.firmware_filename) { 1183 if (!kvm__load_kernel(kvm, cfg.kernel_filename, 1184 cfg.initrd_filename, real_cmdline, vidmode)) 1185 die("unable to load kernel %s", cfg.kernel_filename); 1186 1187 kvm->vmlinux = cfg.vmlinux_filename; 1188 r = symbol_init(kvm); 1189 if (r < 0) 1190 pr_debug("symbol_init() failed with error %d\n", r); 1191 } 1192 1193 ioport__setup_arch(); 1194 1195 r = rtc__init(kvm); 1196 if (r < 0) { 1197 pr_err("rtc__init() failed with error %d\n", r); 1198 goto fail; 1199 } 1200 1201 r = serial8250__init(kvm); 1202 if (r < 0) { 1203 pr_err("serial__init() failed with error %d\n", r); 1204 goto fail; 1205 } 1206 1207 r = virtio_blk__init(kvm); 1208 if (r < 0) { 1209 pr_err("virtio_blk__init() failed with error %d\n", r); 1210 goto fail; 1211 } 1212 1213 r = virtio_scsi_init(kvm); 1214 if (r < 0) { 1215 pr_err("virtio_scsi_init() failed with error %d\n", r); 1216 goto fail; 1217 } 1218 1219 1220 if (active_console == CONSOLE_VIRTIO) 1221 virtio_console__init(kvm); 1222 1223 if (cfg.virtio_rng) 1224 virtio_rng__init(kvm); 1225 1226 if (cfg.balloon) 1227 virtio_bln__init(kvm); 1228 1229 if (!cfg.network) 1230 cfg.network = DEFAULT_NETWORK; 1231 1232 virtio_9p__init(kvm); 1233 1234 for (i = 0; i < cfg.num_net_devices; i++) { 1235 cfg.net_params[i].kvm = kvm; 1236 virtio_net__init(&cfg.net_params[i]); 1237 } 1238 1239 if (cfg.num_net_devices == 0 && cfg.no_net == 0) { 1240 struct virtio_net_params net_params; 1241 1242 net_params = (struct virtio_net_params) { 1243 .guest_ip = cfg.guest_ip, 1244 .host_ip = cfg.host_ip, 1245 .kvm = kvm, 1246 .script = cfg.script, 1247 .mode = NET_MODE_USER, 1248 }; 1249 str_to_mac(cfg.guest_mac, net_params.guest_mac); 1250 str_to_mac(cfg.host_mac, net_params.host_mac); 1251 1252 virtio_net__init(&net_params); 1253 } 1254 1255 kvm__init_ram(kvm); 1256 1257 #ifdef CONFIG_X86 1258 kbd__init(kvm); 1259 #endif 1260 1261 pci_shmem__init(kvm); 1262 1263 if (cfg.vnc || cfg.sdl) { 1264 fb = vesa__init(kvm); 1265 if (IS_ERR(fb)) { 1266 pr_err("vesa__init() failed with error %ld\n", PTR_ERR(fb)); 1267 goto fail; 1268 } 1269 } 1270 1271 if (cfg.vnc && fb) { 1272 r = vnc__init(fb); 1273 if (r < 0) { 1274 pr_err("vnc__init() failed with error %d\n", r); 1275 goto fail; 1276 } 1277 } 1278 1279 if (cfg.sdl && fb) { 1280 sdl__init(fb); 1281 if (r < 0) { 1282 pr_err("sdl__init() failed with error %d\n", r); 1283 goto fail; 1284 } 1285 } 1286 1287 r = fb__start(); 1288 if (r < 0) { 1289 pr_err("fb__init() failed with error %d\n", r); 1290 goto fail; 1291 } 1292 1293 /* Device init all done; firmware init must 1294 * come after this (it may set up device trees etc.) 1295 */ 1296 1297 kvm__start_timer(kvm); 1298 1299 if (cfg.firmware_filename) { 1300 if (!kvm__load_firmware(kvm, cfg.firmware_filename)) 1301 die("unable to load firmware image %s: %s", cfg.firmware_filename, strerror(errno)); 1302 } else { 1303 kvm__arch_setup_firmware(kvm); 1304 if (r < 0) { 1305 pr_err("kvm__arch_setup_firmware() failed with error %d\n", r); 1306 goto fail; 1307 } 1308 } 1309 1310 for (i = 0; i < nrcpus; i++) { 1311 kvm_cpus[i] = kvm_cpu__init(kvm, i); 1312 if (!kvm_cpus[i]) 1313 die("unable to initialize KVM VCPU"); 1314 } 1315 1316 thread_pool__init(nr_online_cpus); 1317 fail: 1318 return r; 1319 } 1320 1321 static int kvm_cmd_run_work(void) 1322 { 1323 int i, r = -1; 1324 void *ret = NULL; 1325 1326 for (i = 0; i < nrcpus; i++) { 1327 if (pthread_create(&kvm_cpus[i]->thread, NULL, kvm_cpu_thread, kvm_cpus[i]) != 0) 1328 die("unable to create KVM VCPU thread"); 1329 } 1330 1331 /* Only VCPU #0 is going to exit by itself when shutting down */ 1332 if (pthread_join(kvm_cpus[0]->thread, &ret) != 0) 1333 r = 0; 1334 1335 kvm_cpu__delete(kvm_cpus[0]); 1336 kvm_cpus[0] = NULL; 1337 1338 for (i = 1; i < nrcpus; i++) { 1339 if (kvm_cpus[i]->is_running) { 1340 pthread_kill(kvm_cpus[i]->thread, SIGKVMEXIT); 1341 if (pthread_join(kvm_cpus[i]->thread, &ret) != 0) 1342 die("pthread_join"); 1343 kvm_cpu__delete(kvm_cpus[i]); 1344 } 1345 if (ret == NULL) 1346 r = 0; 1347 } 1348 1349 return r; 1350 } 1351 1352 static void kvm_cmd_run_exit(int guest_ret) 1353 { 1354 int r = 0; 1355 1356 compat__print_all_messages(); 1357 1358 r = symbol_exit(kvm); 1359 if (r < 0) 1360 pr_warning("symbol_exit() failed with error %d\n", r); 1361 1362 r = irq__exit(kvm); 1363 if (r < 0) 1364 pr_warning("irq__exit() failed with error %d\n", r); 1365 1366 fb__stop(); 1367 1368 r = virtio_scsi_exit(kvm); 1369 if (r < 0) 1370 pr_warning("virtio_scsi_exit() failed with error %d\n", r); 1371 1372 r = virtio_blk__exit(kvm); 1373 if (r < 0) 1374 pr_warning("virtio_blk__exit() failed with error %d\n", r); 1375 1376 r = virtio_rng__exit(kvm); 1377 if (r < 0) 1378 pr_warning("virtio_rng__exit() failed with error %d\n", r); 1379 1380 r = disk_image__close_all(kvm->disks, cfg.image_count); 1381 if (r < 0) 1382 pr_warning("disk_image__close_all() failed with error %d\n", r); 1383 1384 r = serial8250__exit(kvm); 1385 if (r < 0) 1386 pr_warning("serial8250__exit() failed with error %d\n", r); 1387 1388 r = rtc__exit(kvm); 1389 if (r < 0) 1390 pr_warning("rtc__exit() failed with error %d\n", r); 1391 1392 r = kvm__arch_free_firmware(kvm); 1393 if (r < 0) 1394 pr_warning("kvm__arch_free_firmware() failed with error %d\n", r); 1395 1396 r = ioport__exit(kvm); 1397 if (r < 0) 1398 pr_warning("ioport__exit() failed with error %d\n", r); 1399 1400 r = ioeventfd__exit(kvm); 1401 if (r < 0) 1402 pr_warning("ioeventfd__exit() failed with error %d\n", r); 1403 1404 r = pci__exit(kvm); 1405 if (r < 0) 1406 pr_warning("pci__exit() failed with error %d\n", r); 1407 1408 r = kvm__exit(kvm); 1409 if (r < 0) 1410 pr_warning("pci__exit() failed with error %d\n", r); 1411 1412 free(kvm_cpus); 1413 1414 if (guest_ret == 0) 1415 printf("\n # KVM session ended normally.\n"); 1416 } 1417 1418 int kvm_cmd_run(int argc, const char **argv, const char *prefix) 1419 { 1420 int r, ret = -EFAULT; 1421 1422 r = kvm_cmd_run_init(argc, argv); 1423 if (r < 0) 1424 return r; 1425 1426 ret = kvm_cmd_run_work(); 1427 kvm_cmd_run_exit(ret); 1428 1429 return ret; 1430 } 1431