1 #include <stdio.h> 2 #include <string.h> 3 #include <signal.h> 4 #include <unistd.h> 5 #include <stdlib.h> 6 #include <termios.h> 7 #include <sys/utsname.h> 8 #include <sys/types.h> 9 #include <sys/stat.h> 10 #include <ctype.h> 11 12 /* user defined header files */ 13 #include <linux/types.h> 14 #include <kvm/kvm.h> 15 #include <kvm/kvm-cpu.h> 16 #include <kvm/8250-serial.h> 17 #include <kvm/virtio-blk.h> 18 #include <kvm/virtio-net.h> 19 #include <kvm/virtio-console.h> 20 #include <kvm/virtio-rng.h> 21 #include <kvm/virtio-balloon.h> 22 #include <kvm/disk-image.h> 23 #include <kvm/util.h> 24 #include <kvm/pci.h> 25 #include <kvm/rtc.h> 26 #include <kvm/term.h> 27 #include <kvm/ioport.h> 28 #include <kvm/threadpool.h> 29 #include <kvm/barrier.h> 30 #include <kvm/symbol.h> 31 #include <kvm/virtio-9p.h> 32 #include <kvm/vesa.h> 33 #include <kvm/ioeventfd.h> 34 #include <kvm/i8042.h> 35 #include <kvm/vnc.h> 36 #include <kvm/sdl.h> 37 #include <kvm/framebuffer.h> 38 #include <kvm/irq.h> 39 40 /* header files for gitish interface */ 41 #include <kvm/builtin-run.h> 42 #include <kvm/parse-options.h> 43 #include <kvm/mutex.h> 44 45 #define DEFAULT_KVM_DEV "/dev/kvm" 46 #define DEFAULT_CONSOLE "serial" 47 #define DEFAULT_NETWORK "user" 48 #define DEFAULT_HOST_ADDR "192.168.33.1" 49 #define DEFAULT_GUEST_ADDR "192.168.33.15" 50 #define DEFAULT_GUEST_MAC "02:15:15:15:15:15" 51 #define DEFAULT_HOST_MAC "02:01:01:01:01:01" 52 #define DEFAULT_SCRIPT "none" 53 54 #define MB_SHIFT (20) 55 #define MIN_RAM_SIZE_MB (64ULL) 56 #define MIN_RAM_SIZE_BYTE (MIN_RAM_SIZE_MB << MB_SHIFT) 57 58 struct kvm *kvm; 59 struct kvm_cpu *kvm_cpus[KVM_NR_CPUS]; 60 __thread struct kvm_cpu *current_kvm_cpu; 61 62 static u64 ram_size; 63 static u8 image_count; 64 static int virtio_rng; 65 static const char *kernel_cmdline; 66 static const char *kernel_filename; 67 static const char *vmlinux_filename; 68 static const char *initrd_filename; 69 static const char *image_filename[MAX_DISK_IMAGES]; 70 static const char *console; 71 static const char *kvm_dev; 72 static const char *network; 73 static const char *host_ip; 74 static const char *guest_ip; 75 static const char *guest_mac; 76 static const char *host_mac; 77 static const char *script; 78 static const char *guest_name; 79 static bool single_step; 80 static bool readonly_image[MAX_DISK_IMAGES]; 81 static bool vnc; 82 static bool sdl; 83 static bool balloon; 84 static bool using_rootfs; 85 extern bool ioport_debug; 86 extern int active_console; 87 extern int debug_iodelay; 88 89 bool do_debug_print = false; 90 91 static int nrcpus; 92 static int vidmode = -1; 93 94 static const char * const run_usage[] = { 95 "kvm run [<options>] [<kernel image>]", 96 NULL 97 }; 98 99 static int img_name_parser(const struct option *opt, const char *arg, int unset) 100 { 101 char *sep; 102 struct stat st; 103 104 if (stat(arg, &st) == 0 && 105 S_ISDIR(st.st_mode)) { 106 char tmp[PATH_MAX]; 107 108 if (realpath(arg, tmp) == 0 || 109 virtio_9p__init(kvm, tmp, "/dev/root") < 0) 110 die("Unable to initialize virtio 9p"); 111 using_rootfs = 1; 112 return 0; 113 } 114 115 if (image_count >= MAX_DISK_IMAGES) 116 die("Currently only 4 images are supported"); 117 118 image_filename[image_count] = arg; 119 sep = strstr(arg, ","); 120 if (sep) { 121 if (strcmp(sep + 1, "ro") == 0) 122 readonly_image[image_count] = 1; 123 *sep = 0; 124 } 125 126 image_count++; 127 128 return 0; 129 } 130 131 static int virtio_9p_rootdir_parser(const struct option *opt, const char *arg, int unset) 132 { 133 char *tag_name; 134 char tmp[PATH_MAX]; 135 136 /* 137 * 9p dir can be of the form dirname,tag_name or 138 * just dirname. In the later case we use the 139 * default tag name 140 */ 141 tag_name = strstr(arg, ","); 142 if (tag_name) { 143 *tag_name = '\0'; 144 tag_name++; 145 } 146 if (realpath(arg, tmp)) { 147 if (virtio_9p__init(kvm, tmp, tag_name) < 0) 148 die("Unable to initialize virtio 9p"); 149 } else 150 die("Failed resolving 9p path"); 151 return 0; 152 } 153 154 155 static const struct option options[] = { 156 OPT_GROUP("Basic options:"), 157 OPT_STRING('\0', "name", &guest_name, "guest name", 158 "A name for the guest"), 159 OPT_INTEGER('c', "cpus", &nrcpus, "Number of CPUs"), 160 OPT_U64('m', "mem", &ram_size, "Virtual machine memory size in MiB."), 161 OPT_CALLBACK('d', "disk", NULL, "image", "Disk image", img_name_parser), 162 OPT_STRING('\0', "console", &console, "serial or virtio", 163 "Console to use"), 164 OPT_INCR('\0', "rng", &virtio_rng, 165 "Enable virtio Random Number Generator"), 166 OPT_STRING('\0', "kvm-dev", &kvm_dev, "kvm-dev", "KVM device file"), 167 OPT_CALLBACK('\0', "virtio-9p", NULL, "dirname,tag_name", 168 "Enable 9p over virtio", virtio_9p_rootdir_parser), 169 OPT_BOOLEAN('\0', "balloon", &balloon, "Enable virtio balloon"), 170 OPT_BOOLEAN('\0', "vnc", &vnc, "Enable VNC framebuffer"), 171 OPT_BOOLEAN('\0', "sdl", &sdl, "Enable SDL framebuffer"), 172 173 OPT_GROUP("Kernel options:"), 174 OPT_STRING('k', "kernel", &kernel_filename, "kernel", 175 "Kernel to boot in virtual machine"), 176 OPT_STRING('i', "initrd", &initrd_filename, "initrd", 177 "Initial RAM disk image"), 178 OPT_STRING('p', "params", &kernel_cmdline, "params", 179 "Kernel command line arguments"), 180 181 OPT_GROUP("Networking options:"), 182 OPT_STRING('n', "network", &network, "user, tap, none", 183 "Network to use"), 184 OPT_STRING('\0', "host-ip", &host_ip, "a.b.c.d", 185 "Assign this address to the host side networking"), 186 OPT_STRING('\0', "guest-ip", &guest_ip, "a.b.c.d", 187 "Assign this address to the guest side networking"), 188 OPT_STRING('\0', "host-mac", &host_mac, "aa:bb:cc:dd:ee:ff", 189 "Assign this address to the host side NIC"), 190 OPT_STRING('\0', "guest-mac", &guest_mac, "aa:bb:cc:dd:ee:ff", 191 "Assign this address to the guest side NIC"), 192 OPT_STRING('\0', "tapscript", &script, "Script path", 193 "Assign a script to process created tap device"), 194 195 OPT_GROUP("BIOS options:"), 196 OPT_INTEGER('\0', "vidmode", &vidmode, 197 "Video mode"), 198 199 OPT_GROUP("Debug options:"), 200 OPT_BOOLEAN('\0', "debug", &do_debug_print, 201 "Enable debug messages"), 202 OPT_BOOLEAN('\0', "debug-single-step", &single_step, 203 "Enable single stepping"), 204 OPT_BOOLEAN('\0', "debug-ioport", &ioport_debug, 205 "Enable ioport debugging"), 206 OPT_INTEGER('\0', "debug-iodelay", &debug_iodelay, 207 "Delay IO by millisecond"), 208 OPT_END() 209 }; 210 211 /* 212 * Serialize debug printout so that the output of multiple vcpus does not 213 * get mixed up: 214 */ 215 static int printout_done; 216 217 static void handle_sigusr1(int sig) 218 { 219 struct kvm_cpu *cpu = current_kvm_cpu; 220 221 if (!cpu) 222 return; 223 224 printf("\n #\n # vCPU #%ld's dump:\n #\n", cpu->cpu_id); 225 kvm_cpu__show_registers(cpu); 226 kvm_cpu__show_code(cpu); 227 kvm_cpu__show_page_tables(cpu); 228 fflush(stdout); 229 printout_done = 1; 230 mb(); 231 } 232 233 /* Pause/resume the guest using SIGUSR2 */ 234 static int is_paused; 235 236 static void handle_sigusr2(int sig) 237 { 238 if (is_paused) 239 kvm__continue(); 240 else 241 kvm__pause(); 242 243 is_paused = !is_paused; 244 pr_info("Guest %s\n", is_paused ? "paused" : "resumed"); 245 } 246 247 static void handle_sigquit(int sig) 248 { 249 int i; 250 251 for (i = 0; i < nrcpus; i++) { 252 struct kvm_cpu *cpu = kvm_cpus[i]; 253 254 if (!cpu) 255 continue; 256 257 printout_done = 0; 258 pthread_kill(cpu->thread, SIGUSR1); 259 /* 260 * Wait for the vCPU to dump state before signalling 261 * the next thread. Since this is debug code it does 262 * not matter that we are burning CPU time a bit: 263 */ 264 while (!printout_done) 265 mb(); 266 } 267 268 serial8250__inject_sysrq(kvm); 269 } 270 271 static void handle_sigalrm(int sig) 272 { 273 serial8250__inject_interrupt(kvm); 274 virtio_console__inject_interrupt(kvm); 275 } 276 277 static void handle_sigstop(int sig) 278 { 279 kvm_cpu__reboot(); 280 } 281 282 static void *kvm_cpu_thread(void *arg) 283 { 284 current_kvm_cpu = arg; 285 286 if (kvm_cpu__start(current_kvm_cpu)) 287 goto panic_kvm; 288 289 kvm_cpu__delete(current_kvm_cpu); 290 291 return (void *) (intptr_t) 0; 292 293 panic_kvm: 294 fprintf(stderr, "KVM exit reason: %u (\"%s\")\n", 295 current_kvm_cpu->kvm_run->exit_reason, 296 kvm_exit_reasons[current_kvm_cpu->kvm_run->exit_reason]); 297 if (current_kvm_cpu->kvm_run->exit_reason == KVM_EXIT_UNKNOWN) 298 fprintf(stderr, "KVM exit code: 0x%Lu\n", 299 current_kvm_cpu->kvm_run->hw.hardware_exit_reason); 300 301 kvm_cpu__show_registers(current_kvm_cpu); 302 kvm_cpu__show_code(current_kvm_cpu); 303 kvm_cpu__show_page_tables(current_kvm_cpu); 304 305 kvm_cpu__delete(current_kvm_cpu); 306 307 return (void *) (intptr_t) 1; 308 } 309 310 static char kernel[PATH_MAX]; 311 312 static const char *host_kernels[] = { 313 "/boot/vmlinuz", 314 "/boot/bzImage", 315 NULL 316 }; 317 318 static const char *default_kernels[] = { 319 "./bzImage", 320 "../../arch/x86/boot/bzImage", 321 NULL 322 }; 323 324 static const char *default_vmlinux[] = { 325 "../../../vmlinux", 326 "../../vmlinux", 327 NULL 328 }; 329 330 static void kernel_usage_with_options(void) 331 { 332 const char **k; 333 struct utsname uts; 334 335 fprintf(stderr, "Fatal: could not find default kernel image in:\n"); 336 k = &default_kernels[0]; 337 while (*k) { 338 fprintf(stderr, "\t%s\n", *k); 339 k++; 340 } 341 342 if (uname(&uts) < 0) 343 return; 344 345 k = &host_kernels[0]; 346 while (*k) { 347 if (snprintf(kernel, PATH_MAX, "%s-%s", *k, uts.release) < 0) 348 return; 349 fprintf(stderr, "\t%s\n", kernel); 350 k++; 351 } 352 fprintf(stderr, "\nPlease see 'kvm run --help' for more options.\n\n"); 353 } 354 355 static u64 host_ram_size(void) 356 { 357 long page_size; 358 long nr_pages; 359 360 nr_pages = sysconf(_SC_PHYS_PAGES); 361 if (nr_pages < 0) { 362 pr_warning("sysconf(_SC_PHYS_PAGES) failed"); 363 return 0; 364 } 365 366 page_size = sysconf(_SC_PAGE_SIZE); 367 if (page_size < 0) { 368 pr_warning("sysconf(_SC_PAGE_SIZE) failed"); 369 return 0; 370 } 371 372 return (nr_pages * page_size) >> MB_SHIFT; 373 } 374 375 /* 376 * If user didn't specify how much memory it wants to allocate for the guest, 377 * avoid filling the whole host RAM. 378 */ 379 #define RAM_SIZE_RATIO 0.8 380 381 static u64 get_ram_size(int nr_cpus) 382 { 383 u64 available; 384 u64 ram_size; 385 386 ram_size = 64 * (nr_cpus + 3); 387 388 available = host_ram_size() * RAM_SIZE_RATIO; 389 if (!available) 390 available = MIN_RAM_SIZE_MB; 391 392 if (ram_size > available) 393 ram_size = available; 394 395 return ram_size; 396 } 397 398 static const char *find_kernel(void) 399 { 400 const char **k; 401 struct stat st; 402 struct utsname uts; 403 404 k = &default_kernels[0]; 405 while (*k) { 406 if (stat(*k, &st) < 0 || !S_ISREG(st.st_mode)) { 407 k++; 408 continue; 409 } 410 strncpy(kernel, *k, PATH_MAX); 411 return kernel; 412 } 413 414 if (uname(&uts) < 0) 415 return NULL; 416 417 k = &host_kernels[0]; 418 while (*k) { 419 if (snprintf(kernel, PATH_MAX, "%s-%s", *k, uts.release) < 0) 420 return NULL; 421 422 if (stat(kernel, &st) < 0 || !S_ISREG(st.st_mode)) { 423 k++; 424 continue; 425 } 426 return kernel; 427 428 } 429 return NULL; 430 } 431 432 static const char *find_vmlinux(void) 433 { 434 const char **vmlinux; 435 436 vmlinux = &default_vmlinux[0]; 437 while (*vmlinux) { 438 struct stat st; 439 440 if (stat(*vmlinux, &st) < 0 || !S_ISREG(st.st_mode)) { 441 vmlinux++; 442 continue; 443 } 444 return *vmlinux; 445 } 446 return NULL; 447 } 448 449 static int root_device(char *dev, long *part) 450 { 451 struct stat st; 452 453 if (stat("/", &st) < 0) 454 return -1; 455 456 *part = minor(st.st_dev); 457 458 sprintf(dev, "/dev/block/%u:0", major(st.st_dev)); 459 if (access(dev, R_OK) < 0) 460 return -1; 461 462 return 0; 463 } 464 465 static char *host_image(char *cmd_line, size_t size) 466 { 467 char *t; 468 char device[PATH_MAX]; 469 long part = 0; 470 471 t = malloc(PATH_MAX); 472 if (!t) 473 return NULL; 474 475 /* check for the root file system */ 476 if (root_device(device, &part) < 0) { 477 free(t); 478 return NULL; 479 } 480 strncpy(t, device, PATH_MAX); 481 if (!strstr(cmd_line, "root=")) { 482 char tmp[PATH_MAX]; 483 snprintf(tmp, sizeof(tmp), "root=/dev/vda%ld rw ", part); 484 strlcat(cmd_line, tmp, size); 485 } 486 return t; 487 } 488 489 void kvm_run_help(void) 490 { 491 usage_with_options(run_usage, options); 492 } 493 494 int kvm_cmd_run(int argc, const char **argv, const char *prefix) 495 { 496 struct virtio_net_parameters net_params; 497 static char real_cmdline[2048], default_name[20]; 498 struct framebuffer *fb = NULL; 499 unsigned int nr_online_cpus; 500 int exit_code = 0; 501 int max_cpus, recommended_cpus; 502 char *hi; 503 int i; 504 void *ret; 505 506 signal(SIGALRM, handle_sigalrm); 507 signal(SIGQUIT, handle_sigquit); 508 signal(SIGUSR1, handle_sigusr1); 509 signal(SIGUSR2, handle_sigusr2); 510 signal(SIGKVMSTOP, handle_sigstop); 511 512 nr_online_cpus = sysconf(_SC_NPROCESSORS_ONLN); 513 514 while (argc != 0) { 515 argc = parse_options(argc, argv, options, run_usage, 516 PARSE_OPT_STOP_AT_NON_OPTION); 517 if (argc != 0) { 518 if (kernel_filename) { 519 fprintf(stderr, "Cannot handle parameter: " 520 "%s\n", argv[0]); 521 usage_with_options(run_usage, options); 522 return EINVAL; 523 } 524 /* first unhandled parameter is treated as a kernel 525 image 526 */ 527 kernel_filename = argv[0]; 528 argv++; 529 argc--; 530 } 531 532 } 533 534 if (!kernel_filename) 535 kernel_filename = find_kernel(); 536 537 if (!kernel_filename) { 538 kernel_usage_with_options(); 539 return EINVAL; 540 } 541 542 vmlinux_filename = find_vmlinux(); 543 544 if (nrcpus == 0) 545 nrcpus = nr_online_cpus; 546 else if (nrcpus < 1 || nrcpus > KVM_NR_CPUS) 547 die("Number of CPUs %d is out of [1;%d] range", nrcpus, KVM_NR_CPUS); 548 549 if (!ram_size) 550 ram_size = get_ram_size(nrcpus); 551 552 if (ram_size < MIN_RAM_SIZE_MB) 553 die("Not enough memory specified: %lluMB (min %lluMB)", ram_size, MIN_RAM_SIZE_MB); 554 555 if (ram_size > host_ram_size()) 556 pr_warning("Guest memory size %lluMB exceeds host physical RAM size %lluMB", ram_size, host_ram_size()); 557 558 ram_size <<= MB_SHIFT; 559 560 if (!kvm_dev) 561 kvm_dev = DEFAULT_KVM_DEV; 562 563 if (!console) 564 console = DEFAULT_CONSOLE; 565 566 if (!strncmp(console, "virtio", 6)) 567 active_console = CONSOLE_VIRTIO; 568 else 569 active_console = CONSOLE_8250; 570 571 if (!host_ip) 572 host_ip = DEFAULT_HOST_ADDR; 573 574 if (!guest_ip) 575 guest_ip = DEFAULT_GUEST_ADDR; 576 577 if (!guest_mac) 578 guest_mac = DEFAULT_GUEST_MAC; 579 580 if (!host_mac) 581 host_mac = DEFAULT_HOST_MAC; 582 583 if (!script) 584 script = DEFAULT_SCRIPT; 585 586 symbol__init(vmlinux_filename); 587 588 term_init(); 589 590 if (!guest_name) { 591 sprintf(default_name, "guest-%u", getpid()); 592 guest_name = default_name; 593 } 594 595 kvm = kvm__init(kvm_dev, ram_size, guest_name); 596 597 irq__init(kvm); 598 599 kvm->single_step = single_step; 600 601 ioeventfd__init(); 602 603 max_cpus = kvm__max_cpus(kvm); 604 recommended_cpus = kvm__recommended_cpus(kvm); 605 606 if (nrcpus > max_cpus) { 607 printf(" # Limit the number of CPUs to %d\n", max_cpus); 608 kvm->nrcpus = max_cpus; 609 } else if (nrcpus > recommended_cpus) { 610 printf(" # Warning: The maximum recommended amount of VCPUs" 611 " is %d\n", recommended_cpus); 612 } 613 614 kvm->nrcpus = nrcpus; 615 616 /* 617 * vidmode should be either specified 618 * either set by default 619 */ 620 if (vnc || sdl) { 621 if (vidmode == -1) 622 vidmode = 0x312; 623 } else 624 vidmode = 0; 625 626 memset(real_cmdline, 0, sizeof(real_cmdline)); 627 strcpy(real_cmdline, "notsc noapic noacpi pci=conf1 reboot=k panic=1"); 628 if (vnc || sdl) { 629 strcat(real_cmdline, " video=vesafb console=tty0"); 630 } else 631 strcat(real_cmdline, " console=ttyS0 earlyprintk=serial"); 632 strcat(real_cmdline, " "); 633 if (kernel_cmdline) 634 strlcat(real_cmdline, kernel_cmdline, sizeof(real_cmdline)); 635 636 hi = NULL; 637 if (!using_rootfs && !image_filename[0]) { 638 hi = host_image(real_cmdline, sizeof(real_cmdline)); 639 if (hi) { 640 image_filename[0] = hi; 641 readonly_image[0] = true; 642 image_count++; 643 } 644 } 645 646 if (!strstr(real_cmdline, "root=")) 647 strlcat(real_cmdline, " root=/dev/vda rw ", sizeof(real_cmdline)); 648 649 if (using_rootfs) 650 strcat(real_cmdline, " root=/dev/root rootflags=rw,trans=virtio,version=9p2000.u rootfstype=9p"); 651 652 if (image_count) { 653 kvm->nr_disks = image_count; 654 kvm->disks = disk_image__open_all(image_filename, readonly_image, image_count); 655 if (!kvm->disks) 656 die("Unable to load all disk images."); 657 658 virtio_blk__init_all(kvm); 659 } 660 661 free(hi); 662 663 printf(" # kvm run -k %s -m %Lu -c %d --name %s\n", kernel_filename, ram_size / 1024 / 1024, nrcpus, guest_name); 664 665 if (!kvm__load_kernel(kvm, kernel_filename, initrd_filename, 666 real_cmdline, vidmode)) 667 die("unable to load kernel %s", kernel_filename); 668 669 kvm->vmlinux = vmlinux_filename; 670 671 ioport__setup_legacy(); 672 673 rtc__init(); 674 675 serial8250__init(kvm); 676 677 pci__init(); 678 679 if (active_console == CONSOLE_VIRTIO) 680 virtio_console__init(kvm); 681 682 if (virtio_rng) 683 while (virtio_rng--) 684 virtio_rng__init(kvm); 685 686 if (balloon) 687 virtio_bln__init(kvm); 688 689 if (!network) 690 network = DEFAULT_NETWORK; 691 692 if (strncmp(network, "none", 4)) { 693 net_params.guest_ip = guest_ip; 694 net_params.host_ip = host_ip; 695 net_params.kvm = kvm; 696 net_params.script = script; 697 sscanf(guest_mac, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", 698 net_params.guest_mac, 699 net_params.guest_mac+1, 700 net_params.guest_mac+2, 701 net_params.guest_mac+3, 702 net_params.guest_mac+4, 703 net_params.guest_mac+5); 704 sscanf(host_mac, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", 705 net_params.host_mac, 706 net_params.host_mac+1, 707 net_params.host_mac+2, 708 net_params.host_mac+3, 709 net_params.host_mac+4, 710 net_params.host_mac+5); 711 712 if (!strncmp(network, "user", 4)) 713 net_params.mode = NET_MODE_USER; 714 else if (!strncmp(network, "tap", 3)) 715 net_params.mode = NET_MODE_TAP; 716 else 717 die("Unkown network mode %s, please use -network user, tap, none", network); 718 virtio_net__init(&net_params); 719 } 720 721 kvm__start_timer(kvm); 722 723 kvm__setup_bios(kvm); 724 725 for (i = 0; i < nrcpus; i++) { 726 kvm_cpus[i] = kvm_cpu__init(kvm, i); 727 if (!kvm_cpus[i]) 728 die("unable to initialize KVM VCPU"); 729 } 730 731 kvm__init_ram(kvm); 732 733 kbd__init(kvm); 734 735 if (vnc || sdl) 736 fb = vesa__init(kvm); 737 738 if (vnc) { 739 if (fb) 740 vnc__init(fb); 741 } 742 743 if (sdl) { 744 if (fb) 745 sdl__init(fb); 746 } 747 748 fb__start(); 749 750 thread_pool__init(nr_online_cpus); 751 ioeventfd__start(); 752 753 for (i = 0; i < nrcpus; i++) { 754 if (pthread_create(&kvm_cpus[i]->thread, NULL, kvm_cpu_thread, kvm_cpus[i]) != 0) 755 die("unable to create KVM VCPU thread"); 756 } 757 758 /* Only VCPU #0 is going to exit by itself when shutting down */ 759 if (pthread_join(kvm_cpus[0]->thread, &ret) != 0) 760 exit_code = 1; 761 762 for (i = 1; i < nrcpus; i++) { 763 pthread_kill(kvm_cpus[i]->thread, SIGKVMEXIT); 764 if (pthread_join(kvm_cpus[i]->thread, &ret) != 0) 765 die("pthread_join"); 766 767 if (ret != NULL) 768 exit_code = 1; 769 } 770 771 fb__stop(); 772 773 virtio_blk__delete_all(kvm); 774 virtio_rng__delete_all(kvm); 775 776 disk_image__close_all(kvm->disks, image_count); 777 kvm__delete(kvm); 778 779 if (!exit_code) 780 printf("\n # KVM session ended normally.\n"); 781 782 return exit_code; 783 } 784