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 #define BUILD_OPTIONS(name, cfg) \ 459 struct option name[] = { \ 460 OPT_GROUP("Basic options:"), \ 461 OPT_STRING('\0', "name", &(cfg)->guest_name, "guest name", \ 462 "A name for the guest"), \ 463 OPT_INTEGER('c', "cpus", &nrcpus, "Number of CPUs"), \ 464 OPT_U64('m', "mem", &(cfg)->ram_size, "Virtual machine memory size\ 465 in MiB."), \ 466 OPT_CALLBACK('\0', "shmem", NULL, \ 467 "[pci:]<addr>:<size>[:handle=<handle>][:create]", \ 468 "Share host shmem with guest via pci device", \ 469 shmem_parser), \ 470 OPT_CALLBACK('d', "disk", NULL, "image or rootfs_dir", "Disk \ 471 image or rootfs directory", img_name_parser), \ 472 OPT_BOOLEAN('\0', "balloon", &(cfg)->balloon, "Enable virtio \ 473 balloon"), \ 474 OPT_BOOLEAN('\0', "vnc", &(cfg)->vnc, "Enable VNC framebuffer"),\ 475 OPT_BOOLEAN('\0', "sdl", &(cfg)->sdl, "Enable SDL framebuffer"),\ 476 OPT_BOOLEAN('\0', "rng", &(cfg)->virtio_rng, "Enable virtio Random\ 477 Number Generator"), \ 478 OPT_CALLBACK('\0', "9p", NULL, "dir_to_share,tag_name", \ 479 "Enable virtio 9p to share files between host and \ 480 guest", virtio_9p_rootdir_parser), \ 481 OPT_STRING('\0', "console", &(cfg)->console, "serial, virtio or \ 482 hv", "Console to use"), \ 483 OPT_STRING('\0', "dev", &(cfg)->dev, "device_file", \ 484 "KVM device file"), \ 485 OPT_CALLBACK('\0', "tty", NULL, "tty id", \ 486 "Remap guest TTY into a pty on the host", \ 487 tty_parser), \ 488 OPT_STRING('\0', "sandbox", &(cfg)->sandbox, "script", \ 489 "Run this script when booting into custom \ 490 rootfs"), \ 491 OPT_STRING('\0', "hugetlbfs", &(cfg)->hugetlbfs_path, "path", \ 492 "Hugetlbfs path"), \ 493 \ 494 OPT_GROUP("Kernel options:"), \ 495 OPT_STRING('k', "kernel", &(cfg)->kernel_filename, "kernel", \ 496 "Kernel to boot in virtual machine"), \ 497 OPT_STRING('i', "initrd", &(cfg)->initrd_filename, "initrd", \ 498 "Initial RAM disk image"), \ 499 OPT_STRING('p', "params", &(cfg)->kernel_cmdline, "params", \ 500 "Kernel command line arguments"), \ 501 OPT_STRING('f', "firmware", &(cfg)->firmware_filename, "firmware",\ 502 "Firmware image to boot in virtual machine"), \ 503 \ 504 OPT_GROUP("Networking options:"), \ 505 OPT_CALLBACK_DEFAULT('n', "network", NULL, "network params", \ 506 "Create a new guest NIC", \ 507 netdev_parser, NULL), \ 508 OPT_BOOLEAN('\0', "no-dhcp", &(cfg)->no_dhcp, "Disable kernel DHCP\ 509 in rootfs mode"), \ 510 \ 511 OPT_GROUP("BIOS options:"), \ 512 OPT_INTEGER('\0', "vidmode", &vidmode, \ 513 "Video mode"), \ 514 \ 515 OPT_GROUP("Debug options:"), \ 516 OPT_BOOLEAN('\0', "debug", &do_debug_print, \ 517 "Enable debug messages"), \ 518 OPT_BOOLEAN('\0', "debug-single-step", &(cfg)->single_step, \ 519 "Enable single stepping"), \ 520 OPT_BOOLEAN('\0', "debug-ioport", &ioport_debug, \ 521 "Enable ioport debugging"), \ 522 OPT_BOOLEAN('\0', "debug-mmio", &mmio_debug, \ 523 "Enable MMIO debugging"), \ 524 OPT_INTEGER('\0', "debug-iodelay", &debug_iodelay, \ 525 "Delay IO by millisecond"), \ 526 OPT_END() \ 527 }; 528 529 /* 530 * Serialize debug printout so that the output of multiple vcpus does not 531 * get mixed up: 532 */ 533 static int printout_done; 534 535 static void handle_sigusr1(int sig) 536 { 537 struct kvm_cpu *cpu = current_kvm_cpu; 538 int fd = kvm_cpu__get_debug_fd(); 539 540 if (!cpu || cpu->needs_nmi) 541 return; 542 543 dprintf(fd, "\n #\n # vCPU #%ld's dump:\n #\n", cpu->cpu_id); 544 kvm_cpu__show_registers(cpu); 545 kvm_cpu__show_code(cpu); 546 kvm_cpu__show_page_tables(cpu); 547 fflush(stdout); 548 printout_done = 1; 549 mb(); 550 } 551 552 /* Pause/resume the guest using SIGUSR2 */ 553 static int is_paused; 554 555 static void handle_pause(int fd, u32 type, u32 len, u8 *msg) 556 { 557 if (WARN_ON(len)) 558 return; 559 560 if (type == KVM_IPC_RESUME && is_paused) { 561 kvm->vm_state = KVM_VMSTATE_RUNNING; 562 kvm__continue(); 563 } else if (type == KVM_IPC_PAUSE && !is_paused) { 564 kvm->vm_state = KVM_VMSTATE_PAUSED; 565 ioctl(kvm->vm_fd, KVM_KVMCLOCK_CTRL); 566 kvm__pause(); 567 } else { 568 return; 569 } 570 571 is_paused = !is_paused; 572 } 573 574 static void handle_vmstate(int fd, u32 type, u32 len, u8 *msg) 575 { 576 int r = 0; 577 578 if (type == KVM_IPC_VMSTATE) 579 r = write(fd, &kvm->vm_state, sizeof(kvm->vm_state)); 580 581 if (r < 0) 582 pr_warning("Failed sending VMSTATE"); 583 } 584 585 static void handle_debug(int fd, u32 type, u32 len, u8 *msg) 586 { 587 int i; 588 struct debug_cmd_params *params; 589 u32 dbg_type; 590 u32 vcpu; 591 592 if (WARN_ON(type != KVM_IPC_DEBUG || len != sizeof(*params))) 593 return; 594 595 params = (void *)msg; 596 dbg_type = params->dbg_type; 597 vcpu = params->cpu; 598 599 if (dbg_type & KVM_DEBUG_CMD_TYPE_SYSRQ) 600 serial8250__inject_sysrq(kvm, params->sysrq); 601 602 if (dbg_type & KVM_DEBUG_CMD_TYPE_NMI) { 603 if ((int)vcpu >= kvm->nrcpus) 604 return; 605 606 kvm_cpus[vcpu]->needs_nmi = 1; 607 pthread_kill(kvm_cpus[vcpu]->thread, SIGUSR1); 608 } 609 610 if (!(dbg_type & KVM_DEBUG_CMD_TYPE_DUMP)) 611 return; 612 613 for (i = 0; i < nrcpus; i++) { 614 struct kvm_cpu *cpu = kvm_cpus[i]; 615 616 if (!cpu) 617 continue; 618 619 printout_done = 0; 620 621 kvm_cpu__set_debug_fd(fd); 622 pthread_kill(cpu->thread, SIGUSR1); 623 /* 624 * Wait for the vCPU to dump state before signalling 625 * the next thread. Since this is debug code it does 626 * not matter that we are burning CPU time a bit: 627 */ 628 while (!printout_done) 629 mb(); 630 } 631 632 close(fd); 633 634 serial8250__inject_sysrq(kvm, 'p'); 635 } 636 637 static void handle_sigalrm(int sig) 638 { 639 kvm__arch_periodic_poll(kvm); 640 } 641 642 static void handle_stop(int fd, u32 type, u32 len, u8 *msg) 643 { 644 if (WARN_ON(type != KVM_IPC_STOP || len)) 645 return; 646 647 kvm_cpu__reboot(); 648 } 649 650 static void *kvm_cpu_thread(void *arg) 651 { 652 current_kvm_cpu = arg; 653 654 if (kvm_cpu__start(current_kvm_cpu)) 655 goto panic_kvm; 656 657 return (void *) (intptr_t) 0; 658 659 panic_kvm: 660 fprintf(stderr, "KVM exit reason: %u (\"%s\")\n", 661 current_kvm_cpu->kvm_run->exit_reason, 662 kvm_exit_reasons[current_kvm_cpu->kvm_run->exit_reason]); 663 if (current_kvm_cpu->kvm_run->exit_reason == KVM_EXIT_UNKNOWN) 664 fprintf(stderr, "KVM exit code: 0x%Lu\n", 665 current_kvm_cpu->kvm_run->hw.hardware_exit_reason); 666 667 kvm_cpu__set_debug_fd(STDOUT_FILENO); 668 kvm_cpu__show_registers(current_kvm_cpu); 669 kvm_cpu__show_code(current_kvm_cpu); 670 kvm_cpu__show_page_tables(current_kvm_cpu); 671 672 return (void *) (intptr_t) 1; 673 } 674 675 static char kernel[PATH_MAX]; 676 677 static const char *host_kernels[] = { 678 "/boot/vmlinuz", 679 "/boot/bzImage", 680 NULL 681 }; 682 683 static const char *default_kernels[] = { 684 "./bzImage", 685 "arch/" BUILD_ARCH "/boot/bzImage", 686 "../../arch/" BUILD_ARCH "/boot/bzImage", 687 NULL 688 }; 689 690 static const char *default_vmlinux[] = { 691 "vmlinux", 692 "../../../vmlinux", 693 "../../vmlinux", 694 NULL 695 }; 696 697 static void kernel_usage_with_options(void) 698 { 699 const char **k; 700 struct utsname uts; 701 702 fprintf(stderr, "Fatal: could not find default kernel image in:\n"); 703 k = &default_kernels[0]; 704 while (*k) { 705 fprintf(stderr, "\t%s\n", *k); 706 k++; 707 } 708 709 if (uname(&uts) < 0) 710 return; 711 712 k = &host_kernels[0]; 713 while (*k) { 714 if (snprintf(kernel, PATH_MAX, "%s-%s", *k, uts.release) < 0) 715 return; 716 fprintf(stderr, "\t%s\n", kernel); 717 k++; 718 } 719 fprintf(stderr, "\nPlease see '%s run --help' for more options.\n\n", 720 KVM_BINARY_NAME); 721 } 722 723 static u64 host_ram_size(void) 724 { 725 long page_size; 726 long nr_pages; 727 728 nr_pages = sysconf(_SC_PHYS_PAGES); 729 if (nr_pages < 0) { 730 pr_warning("sysconf(_SC_PHYS_PAGES) failed"); 731 return 0; 732 } 733 734 page_size = sysconf(_SC_PAGE_SIZE); 735 if (page_size < 0) { 736 pr_warning("sysconf(_SC_PAGE_SIZE) failed"); 737 return 0; 738 } 739 740 return (nr_pages * page_size) >> MB_SHIFT; 741 } 742 743 /* 744 * If user didn't specify how much memory it wants to allocate for the guest, 745 * avoid filling the whole host RAM. 746 */ 747 #define RAM_SIZE_RATIO 0.8 748 749 static u64 get_ram_size(int nr_cpus) 750 { 751 u64 available; 752 u64 ram_size; 753 754 ram_size = 64 * (nr_cpus + 3); 755 756 available = host_ram_size() * RAM_SIZE_RATIO; 757 if (!available) 758 available = MIN_RAM_SIZE_MB; 759 760 if (ram_size > available) 761 ram_size = available; 762 763 return ram_size; 764 } 765 766 static const char *find_kernel(void) 767 { 768 const char **k; 769 struct stat st; 770 struct utsname uts; 771 772 k = &default_kernels[0]; 773 while (*k) { 774 if (stat(*k, &st) < 0 || !S_ISREG(st.st_mode)) { 775 k++; 776 continue; 777 } 778 strncpy(kernel, *k, PATH_MAX); 779 return kernel; 780 } 781 782 if (uname(&uts) < 0) 783 return NULL; 784 785 k = &host_kernels[0]; 786 while (*k) { 787 if (snprintf(kernel, PATH_MAX, "%s-%s", *k, uts.release) < 0) 788 return NULL; 789 790 if (stat(kernel, &st) < 0 || !S_ISREG(st.st_mode)) { 791 k++; 792 continue; 793 } 794 return kernel; 795 796 } 797 return NULL; 798 } 799 800 static const char *find_vmlinux(void) 801 { 802 const char **vmlinux; 803 804 vmlinux = &default_vmlinux[0]; 805 while (*vmlinux) { 806 struct stat st; 807 808 if (stat(*vmlinux, &st) < 0 || !S_ISREG(st.st_mode)) { 809 vmlinux++; 810 continue; 811 } 812 return *vmlinux; 813 } 814 return NULL; 815 } 816 817 void kvm_run_help(void) 818 { 819 BUILD_OPTIONS(options, &cfg); 820 usage_with_options(run_usage, options); 821 } 822 823 static int kvm_setup_guest_init(void) 824 { 825 const char *rootfs = cfg.custom_rootfs_name; 826 char tmp[PATH_MAX]; 827 size_t size; 828 int fd, ret; 829 char *data; 830 831 /* Setup /virt/init */ 832 size = (size_t)&_binary_guest_init_size; 833 data = (char *)&_binary_guest_init_start; 834 snprintf(tmp, PATH_MAX, "%s%s/virt/init", kvm__get_dir(), rootfs); 835 remove(tmp); 836 fd = open(tmp, O_CREAT | O_WRONLY, 0755); 837 if (fd < 0) 838 die("Fail to setup %s", tmp); 839 ret = xwrite(fd, data, size); 840 if (ret < 0) 841 die("Fail to setup %s", tmp); 842 close(fd); 843 844 return 0; 845 } 846 847 static int kvm_run_set_sandbox(void) 848 { 849 const char *guestfs_name = cfg.custom_rootfs_name; 850 char path[PATH_MAX], script[PATH_MAX], *tmp; 851 852 snprintf(path, PATH_MAX, "%s%s/virt/sandbox.sh", kvm__get_dir(), guestfs_name); 853 854 remove(path); 855 856 if (cfg.sandbox == NULL) 857 return 0; 858 859 tmp = realpath(cfg.sandbox, NULL); 860 if (tmp == NULL) 861 return -ENOMEM; 862 863 snprintf(script, PATH_MAX, "/host/%s", tmp); 864 free(tmp); 865 866 return symlink(script, path); 867 } 868 869 static void kvm_write_sandbox_cmd_exactly(int fd, const char *arg) 870 { 871 const char *single_quote; 872 873 if (!*arg) { /* zero length string */ 874 if (write(fd, "''", 2) <= 0) 875 die("Failed writing sandbox script"); 876 return; 877 } 878 879 while (*arg) { 880 single_quote = strchrnul(arg, '\''); 881 882 /* write non-single-quote string as #('string') */ 883 if (arg != single_quote) { 884 if (write(fd, "'", 1) <= 0 || 885 write(fd, arg, single_quote - arg) <= 0 || 886 write(fd, "'", 1) <= 0) 887 die("Failed writing sandbox script"); 888 } 889 890 /* write single quote as #("'") */ 891 if (*single_quote) { 892 if (write(fd, "\"'\"", 3) <= 0) 893 die("Failed writing sandbox script"); 894 } else 895 break; 896 897 arg = single_quote + 1; 898 } 899 } 900 901 static void resolve_program(const char *src, char *dst, size_t len) 902 { 903 struct stat st; 904 int err; 905 906 err = stat(src, &st); 907 908 if (!err && S_ISREG(st.st_mode)) { 909 char resolved_path[PATH_MAX]; 910 911 if (!realpath(src, resolved_path)) 912 die("Unable to resolve program %s: %s\n", src, strerror(errno)); 913 914 snprintf(dst, len, "/host%s", resolved_path); 915 } else 916 strncpy(dst, src, len); 917 } 918 919 static void kvm_run_write_sandbox_cmd(const char **argv, int argc) 920 { 921 const char script_hdr[] = "#! /bin/bash\n\n"; 922 char program[PATH_MAX]; 923 int fd; 924 925 remove(cfg.sandbox); 926 927 fd = open(cfg.sandbox, O_RDWR | O_CREAT, 0777); 928 if (fd < 0) 929 die("Failed creating sandbox script"); 930 931 if (write(fd, script_hdr, sizeof(script_hdr) - 1) <= 0) 932 die("Failed writing sandbox script"); 933 934 resolve_program(argv[0], program, PATH_MAX); 935 kvm_write_sandbox_cmd_exactly(fd, program); 936 937 argv++; 938 argc--; 939 940 while (argc) { 941 if (write(fd, " ", 1) <= 0) 942 die("Failed writing sandbox script"); 943 944 kvm_write_sandbox_cmd_exactly(fd, argv[0]); 945 argv++; 946 argc--; 947 } 948 if (write(fd, "\n", 1) <= 0) 949 die("Failed writing sandbox script"); 950 951 close(fd); 952 } 953 954 static int kvm_cmd_run_init(int argc, const char **argv) 955 { 956 static char real_cmdline[2048], default_name[20]; 957 struct framebuffer *fb = NULL; 958 unsigned int nr_online_cpus; 959 int max_cpus, recommended_cpus; 960 int i, r; 961 BUILD_OPTIONS(options, &cfg); 962 963 signal(SIGALRM, handle_sigalrm); 964 kvm_ipc__register_handler(KVM_IPC_DEBUG, handle_debug); 965 signal(SIGUSR1, handle_sigusr1); 966 kvm_ipc__register_handler(KVM_IPC_PAUSE, handle_pause); 967 kvm_ipc__register_handler(KVM_IPC_RESUME, handle_pause); 968 kvm_ipc__register_handler(KVM_IPC_STOP, handle_stop); 969 kvm_ipc__register_handler(KVM_IPC_VMSTATE, handle_vmstate); 970 971 nr_online_cpus = sysconf(_SC_NPROCESSORS_ONLN); 972 cfg.custom_rootfs_name = "default"; 973 974 while (argc != 0) { 975 argc = parse_options(argc, argv, options, run_usage, 976 PARSE_OPT_STOP_AT_NON_OPTION | 977 PARSE_OPT_KEEP_DASHDASH); 978 if (argc != 0) { 979 /* Cusrom options, should have been handled elsewhere */ 980 if (strcmp(argv[0], "--") == 0) { 981 if (kvm_run_wrapper == KVM_RUN_SANDBOX) { 982 cfg.sandbox = DEFAULT_SANDBOX_FILENAME; 983 kvm_run_write_sandbox_cmd(argv+1, argc-1); 984 break; 985 } 986 } 987 988 if ((kvm_run_wrapper == KVM_RUN_DEFAULT && cfg.kernel_filename) || 989 (kvm_run_wrapper == KVM_RUN_SANDBOX && cfg.sandbox)) { 990 fprintf(stderr, "Cannot handle parameter: " 991 "%s\n", argv[0]); 992 usage_with_options(run_usage, options); 993 return -EINVAL; 994 } 995 if (kvm_run_wrapper == KVM_RUN_SANDBOX) { 996 /* 997 * first unhandled parameter is treated as 998 * sandbox command 999 */ 1000 cfg.sandbox = DEFAULT_SANDBOX_FILENAME; 1001 kvm_run_write_sandbox_cmd(argv, argc); 1002 } else { 1003 /* 1004 * first unhandled parameter is treated as a kernel 1005 * image 1006 */ 1007 cfg.kernel_filename = argv[0]; 1008 } 1009 argv++; 1010 argc--; 1011 } 1012 1013 } 1014 1015 if (!cfg.kernel_filename) 1016 cfg.kernel_filename = find_kernel(); 1017 1018 if (!cfg.kernel_filename) { 1019 kernel_usage_with_options(); 1020 return -EINVAL; 1021 } 1022 1023 cfg.vmlinux_filename = find_vmlinux(); 1024 1025 if (nrcpus == 0) 1026 nrcpus = nr_online_cpus; 1027 1028 if (!cfg.ram_size) 1029 cfg.ram_size = get_ram_size(nrcpus); 1030 1031 if (cfg.ram_size < MIN_RAM_SIZE_MB) 1032 die("Not enough memory specified: %lluMB (min %lluMB)", cfg.ram_size, MIN_RAM_SIZE_MB); 1033 1034 if (cfg.ram_size > host_ram_size()) 1035 pr_warning("Guest memory size %lluMB exceeds host physical RAM size %lluMB", cfg.ram_size, host_ram_size()); 1036 1037 cfg.ram_size <<= MB_SHIFT; 1038 1039 if (!cfg.dev) 1040 cfg.dev = DEFAULT_KVM_DEV; 1041 1042 if (!cfg.console) 1043 cfg.console = DEFAULT_CONSOLE; 1044 1045 if (!strncmp(cfg.console, "virtio", 6)) 1046 active_console = CONSOLE_VIRTIO; 1047 else if (!strncmp(cfg.console, "serial", 6)) 1048 active_console = CONSOLE_8250; 1049 else if (!strncmp(cfg.console, "hv", 2)) 1050 active_console = CONSOLE_HV; 1051 else 1052 pr_warning("No console!"); 1053 1054 if (!cfg.host_ip) 1055 cfg.host_ip = DEFAULT_HOST_ADDR; 1056 1057 if (!cfg.guest_ip) 1058 cfg.guest_ip = DEFAULT_GUEST_ADDR; 1059 1060 if (!cfg.guest_mac) 1061 cfg.guest_mac = DEFAULT_GUEST_MAC; 1062 1063 if (!cfg.host_mac) 1064 cfg.host_mac = DEFAULT_HOST_MAC; 1065 1066 if (!cfg.script) 1067 cfg.script = DEFAULT_SCRIPT; 1068 1069 term_init(); 1070 1071 if (!cfg.guest_name) { 1072 if (cfg.custom_rootfs) { 1073 cfg.guest_name = cfg.custom_rootfs_name; 1074 } else { 1075 sprintf(default_name, "guest-%u", getpid()); 1076 cfg.guest_name = default_name; 1077 } 1078 } 1079 1080 kvm = kvm__init(cfg.dev, cfg.hugetlbfs_path, cfg.ram_size, cfg.guest_name); 1081 if (IS_ERR(kvm)) { 1082 r = PTR_ERR(kvm); 1083 goto fail; 1084 } 1085 1086 kvm->single_step = cfg.single_step; 1087 1088 r = ioeventfd__init(kvm); 1089 if (r < 0) { 1090 pr_err("ioeventfd__init() failed with error %d\n", r); 1091 goto fail; 1092 } 1093 1094 max_cpus = kvm__max_cpus(kvm); 1095 recommended_cpus = kvm__recommended_cpus(kvm); 1096 1097 if (nrcpus > max_cpus) { 1098 printf(" # Limit the number of CPUs to %d\n", max_cpus); 1099 nrcpus = max_cpus; 1100 } else if (nrcpus > recommended_cpus) { 1101 printf(" # Warning: The maximum recommended amount of VCPUs" 1102 " is %d\n", recommended_cpus); 1103 } 1104 1105 kvm->nrcpus = nrcpus; 1106 1107 /* Alloc one pointer too many, so array ends up 0-terminated */ 1108 kvm_cpus = calloc(nrcpus + 1, sizeof(void *)); 1109 if (!kvm_cpus) 1110 die("Couldn't allocate array for %d CPUs", nrcpus); 1111 1112 r = irq__init(kvm); 1113 if (r < 0) { 1114 pr_err("irq__init() failed with error %d\n", r); 1115 goto fail; 1116 } 1117 1118 r = pci__init(kvm); 1119 if (r < 0) { 1120 pr_err("pci__init() failed with error %d\n", r); 1121 goto fail; 1122 } 1123 1124 r = ioport__init(kvm); 1125 if (r < 0) { 1126 pr_err("ioport__init() failed with error %d\n", r); 1127 goto fail; 1128 } 1129 1130 /* 1131 * vidmode should be either specified 1132 * either set by default 1133 */ 1134 if (cfg.vnc || cfg.sdl) { 1135 if (vidmode == -1) 1136 vidmode = 0x312; 1137 } else { 1138 vidmode = 0; 1139 } 1140 1141 memset(real_cmdline, 0, sizeof(real_cmdline)); 1142 kvm__arch_set_cmdline(real_cmdline, cfg.vnc || cfg.sdl); 1143 1144 if (strlen(real_cmdline) > 0) 1145 strcat(real_cmdline, " "); 1146 1147 if (cfg.kernel_cmdline) 1148 strlcat(real_cmdline, cfg.kernel_cmdline, sizeof(real_cmdline)); 1149 1150 if (!cfg.using_rootfs && !cfg.disk_image[0].filename && !cfg.initrd_filename) { 1151 char tmp[PATH_MAX]; 1152 1153 kvm_setup_create_new(cfg.custom_rootfs_name); 1154 kvm_setup_resolv(cfg.custom_rootfs_name); 1155 1156 snprintf(tmp, PATH_MAX, "%s%s", kvm__get_dir(), "default"); 1157 if (virtio_9p__register(kvm, tmp, "/dev/root") < 0) 1158 die("Unable to initialize virtio 9p"); 1159 if (virtio_9p__register(kvm, "/", "hostfs") < 0) 1160 die("Unable to initialize virtio 9p"); 1161 cfg.using_rootfs = cfg.custom_rootfs = 1; 1162 } 1163 1164 if (cfg.using_rootfs) { 1165 strcat(real_cmdline, " root=/dev/root rw rootflags=rw,trans=virtio,version=9p2000.L rootfstype=9p"); 1166 if (cfg.custom_rootfs) { 1167 kvm_run_set_sandbox(); 1168 1169 strcat(real_cmdline, " init=/virt/init"); 1170 1171 if (!cfg.no_dhcp) 1172 strcat(real_cmdline, " ip=dhcp"); 1173 if (kvm_setup_guest_init()) 1174 die("Failed to setup init for guest."); 1175 } 1176 } else if (!strstr(real_cmdline, "root=")) { 1177 strlcat(real_cmdline, " root=/dev/vda rw ", sizeof(real_cmdline)); 1178 } 1179 1180 if (cfg.image_count) { 1181 kvm->nr_disks = cfg.image_count; 1182 kvm->disks = disk_image__open_all((struct disk_image_params *)&cfg.disk_image, cfg.image_count); 1183 if (IS_ERR(kvm->disks)) { 1184 r = PTR_ERR(kvm->disks); 1185 pr_err("disk_image__open_all() failed with error %ld\n", 1186 PTR_ERR(kvm->disks)); 1187 goto fail; 1188 } 1189 } 1190 1191 printf(" # %s run -k %s -m %Lu -c %d --name %s\n", KVM_BINARY_NAME, 1192 cfg.kernel_filename, cfg.ram_size / 1024 / 1024, nrcpus, cfg.guest_name); 1193 1194 if (!cfg.firmware_filename) { 1195 if (!kvm__load_kernel(kvm, cfg.kernel_filename, 1196 cfg.initrd_filename, real_cmdline, vidmode)) 1197 die("unable to load kernel %s", cfg.kernel_filename); 1198 1199 kvm->vmlinux = cfg.vmlinux_filename; 1200 r = symbol_init(kvm); 1201 if (r < 0) 1202 pr_debug("symbol_init() failed with error %d\n", r); 1203 } 1204 1205 ioport__setup_arch(); 1206 1207 r = rtc__init(kvm); 1208 if (r < 0) { 1209 pr_err("rtc__init() failed with error %d\n", r); 1210 goto fail; 1211 } 1212 1213 r = serial8250__init(kvm); 1214 if (r < 0) { 1215 pr_err("serial__init() failed with error %d\n", r); 1216 goto fail; 1217 } 1218 1219 r = virtio_blk__init(kvm); 1220 if (r < 0) { 1221 pr_err("virtio_blk__init() failed with error %d\n", r); 1222 goto fail; 1223 } 1224 1225 r = virtio_scsi_init(kvm); 1226 if (r < 0) { 1227 pr_err("virtio_scsi_init() failed with error %d\n", r); 1228 goto fail; 1229 } 1230 1231 1232 if (active_console == CONSOLE_VIRTIO) 1233 virtio_console__init(kvm); 1234 1235 if (cfg.virtio_rng) 1236 virtio_rng__init(kvm); 1237 1238 if (cfg.balloon) 1239 virtio_bln__init(kvm); 1240 1241 if (!cfg.network) 1242 cfg.network = DEFAULT_NETWORK; 1243 1244 virtio_9p__init(kvm); 1245 1246 for (i = 0; i < cfg.num_net_devices; i++) { 1247 cfg.net_params[i].kvm = kvm; 1248 virtio_net__init(&cfg.net_params[i]); 1249 } 1250 1251 if (cfg.num_net_devices == 0 && cfg.no_net == 0) { 1252 struct virtio_net_params net_params; 1253 1254 net_params = (struct virtio_net_params) { 1255 .guest_ip = cfg.guest_ip, 1256 .host_ip = cfg.host_ip, 1257 .kvm = kvm, 1258 .script = cfg.script, 1259 .mode = NET_MODE_USER, 1260 }; 1261 str_to_mac(cfg.guest_mac, net_params.guest_mac); 1262 str_to_mac(cfg.host_mac, net_params.host_mac); 1263 1264 virtio_net__init(&net_params); 1265 } 1266 1267 kvm__init_ram(kvm); 1268 1269 #ifdef CONFIG_X86 1270 kbd__init(kvm); 1271 #endif 1272 1273 pci_shmem__init(kvm); 1274 1275 if (cfg.vnc || cfg.sdl) { 1276 fb = vesa__init(kvm); 1277 if (IS_ERR(fb)) { 1278 pr_err("vesa__init() failed with error %ld\n", PTR_ERR(fb)); 1279 goto fail; 1280 } 1281 } 1282 1283 if (cfg.vnc && fb) { 1284 r = vnc__init(fb); 1285 if (r < 0) { 1286 pr_err("vnc__init() failed with error %d\n", r); 1287 goto fail; 1288 } 1289 } 1290 1291 if (cfg.sdl && fb) { 1292 sdl__init(fb); 1293 if (r < 0) { 1294 pr_err("sdl__init() failed with error %d\n", r); 1295 goto fail; 1296 } 1297 } 1298 1299 r = fb__start(); 1300 if (r < 0) { 1301 pr_err("fb__init() failed with error %d\n", r); 1302 goto fail; 1303 } 1304 1305 /* Device init all done; firmware init must 1306 * come after this (it may set up device trees etc.) 1307 */ 1308 1309 kvm__start_timer(kvm); 1310 1311 if (cfg.firmware_filename) { 1312 if (!kvm__load_firmware(kvm, cfg.firmware_filename)) 1313 die("unable to load firmware image %s: %s", cfg.firmware_filename, strerror(errno)); 1314 } else { 1315 kvm__arch_setup_firmware(kvm); 1316 if (r < 0) { 1317 pr_err("kvm__arch_setup_firmware() failed with error %d\n", r); 1318 goto fail; 1319 } 1320 } 1321 1322 for (i = 0; i < nrcpus; i++) { 1323 kvm_cpus[i] = kvm_cpu__init(kvm, i); 1324 if (!kvm_cpus[i]) 1325 die("unable to initialize KVM VCPU"); 1326 } 1327 1328 thread_pool__init(nr_online_cpus); 1329 fail: 1330 return r; 1331 } 1332 1333 static int kvm_cmd_run_work(void) 1334 { 1335 int i, r = -1; 1336 void *ret = NULL; 1337 1338 for (i = 0; i < nrcpus; i++) { 1339 if (pthread_create(&kvm_cpus[i]->thread, NULL, kvm_cpu_thread, kvm_cpus[i]) != 0) 1340 die("unable to create KVM VCPU thread"); 1341 } 1342 1343 /* Only VCPU #0 is going to exit by itself when shutting down */ 1344 if (pthread_join(kvm_cpus[0]->thread, &ret) != 0) 1345 r = 0; 1346 1347 kvm_cpu__delete(kvm_cpus[0]); 1348 kvm_cpus[0] = NULL; 1349 1350 for (i = 1; i < nrcpus; i++) { 1351 if (kvm_cpus[i]->is_running) { 1352 pthread_kill(kvm_cpus[i]->thread, SIGKVMEXIT); 1353 if (pthread_join(kvm_cpus[i]->thread, &ret) != 0) 1354 die("pthread_join"); 1355 kvm_cpu__delete(kvm_cpus[i]); 1356 } 1357 if (ret == NULL) 1358 r = 0; 1359 } 1360 1361 return r; 1362 } 1363 1364 static void kvm_cmd_run_exit(int guest_ret) 1365 { 1366 int r = 0; 1367 1368 compat__print_all_messages(); 1369 1370 r = symbol_exit(kvm); 1371 if (r < 0) 1372 pr_warning("symbol_exit() failed with error %d\n", r); 1373 1374 r = irq__exit(kvm); 1375 if (r < 0) 1376 pr_warning("irq__exit() failed with error %d\n", r); 1377 1378 fb__stop(); 1379 1380 r = virtio_scsi_exit(kvm); 1381 if (r < 0) 1382 pr_warning("virtio_scsi_exit() failed with error %d\n", r); 1383 1384 r = virtio_blk__exit(kvm); 1385 if (r < 0) 1386 pr_warning("virtio_blk__exit() failed with error %d\n", r); 1387 1388 r = virtio_rng__exit(kvm); 1389 if (r < 0) 1390 pr_warning("virtio_rng__exit() failed with error %d\n", r); 1391 1392 r = disk_image__close_all(kvm->disks, cfg.image_count); 1393 if (r < 0) 1394 pr_warning("disk_image__close_all() failed with error %d\n", r); 1395 1396 r = serial8250__exit(kvm); 1397 if (r < 0) 1398 pr_warning("serial8250__exit() failed with error %d\n", r); 1399 1400 r = rtc__exit(kvm); 1401 if (r < 0) 1402 pr_warning("rtc__exit() failed with error %d\n", r); 1403 1404 r = kvm__arch_free_firmware(kvm); 1405 if (r < 0) 1406 pr_warning("kvm__arch_free_firmware() failed with error %d\n", r); 1407 1408 r = ioport__exit(kvm); 1409 if (r < 0) 1410 pr_warning("ioport__exit() failed with error %d\n", r); 1411 1412 r = ioeventfd__exit(kvm); 1413 if (r < 0) 1414 pr_warning("ioeventfd__exit() failed with error %d\n", r); 1415 1416 r = pci__exit(kvm); 1417 if (r < 0) 1418 pr_warning("pci__exit() failed with error %d\n", r); 1419 1420 r = kvm__exit(kvm); 1421 if (r < 0) 1422 pr_warning("pci__exit() failed with error %d\n", r); 1423 1424 free(kvm_cpus); 1425 1426 if (guest_ret == 0) 1427 printf("\n # KVM session ended normally.\n"); 1428 } 1429 1430 int kvm_cmd_run(int argc, const char **argv, const char *prefix) 1431 { 1432 int r, ret = -EFAULT; 1433 1434 r = kvm_cmd_run_init(argc, argv); 1435 if (r < 0) 1436 return r; 1437 1438 ret = kvm_cmd_run_work(); 1439 kvm_cmd_run_exit(ret); 1440 1441 return ret; 1442 } 1443