1 #include "kvm/builtin-run.h" 2 3 #include "kvm/virtio-balloon.h" 4 #include "kvm/virtio-console.h" 5 #include "kvm/parse-options.h" 6 #include "kvm/8250-serial.h" 7 #include "kvm/framebuffer.h" 8 #include "kvm/disk-image.h" 9 #include "kvm/threadpool.h" 10 #include "kvm/virtio-blk.h" 11 #include "kvm/virtio-net.h" 12 #include "kvm/virtio-rng.h" 13 #include "kvm/ioeventfd.h" 14 #include "kvm/virtio-9p.h" 15 #include "kvm/barrier.h" 16 #include "kvm/kvm-cpu.h" 17 #include "kvm/ioport.h" 18 #include "kvm/symbol.h" 19 #include "kvm/i8042.h" 20 #include "kvm/mutex.h" 21 #include "kvm/term.h" 22 #include "kvm/util.h" 23 #include "kvm/vesa.h" 24 #include "kvm/irq.h" 25 #include "kvm/kvm.h" 26 #include "kvm/pci.h" 27 #include "kvm/rtc.h" 28 #include "kvm/sdl.h" 29 #include "kvm/vnc.h" 30 31 #include <linux/types.h> 32 33 #include <sys/utsname.h> 34 #include <sys/types.h> 35 #include <sys/stat.h> 36 #include <termios.h> 37 #include <signal.h> 38 #include <stdlib.h> 39 #include <string.h> 40 #include <unistd.h> 41 #include <ctype.h> 42 #include <stdio.h> 43 44 #define DEFAULT_KVM_DEV "/dev/kvm" 45 #define DEFAULT_CONSOLE "serial" 46 #define DEFAULT_NETWORK "user" 47 #define DEFAULT_HOST_ADDR "192.168.33.1" 48 #define DEFAULT_GUEST_ADDR "192.168.33.15" 49 #define DEFAULT_GUEST_MAC "02:15:15:15:15:15" 50 #define DEFAULT_HOST_MAC "02:01:01:01:01:01" 51 #define DEFAULT_SCRIPT "none" 52 53 #define MB_SHIFT (20) 54 #define MIN_RAM_SIZE_MB (64ULL) 55 #define MIN_RAM_SIZE_BYTE (MIN_RAM_SIZE_MB << MB_SHIFT) 56 57 struct kvm *kvm; 58 struct kvm_cpu *kvm_cpus[KVM_NR_CPUS]; 59 __thread struct kvm_cpu *current_kvm_cpu; 60 61 static u64 ram_size; 62 static u8 image_count; 63 static int virtio_rng; 64 static const char *kernel_cmdline; 65 static const char *kernel_filename; 66 static const char *vmlinux_filename; 67 static const char *initrd_filename; 68 static const char *image_filename[MAX_DISK_IMAGES]; 69 static const char *console; 70 static const char *dev; 71 static const char *network; 72 static const char *host_ip; 73 static const char *guest_ip; 74 static const char *guest_mac; 75 static const char *host_mac; 76 static const char *script; 77 static const char *guest_name; 78 static bool single_step; 79 static bool readonly_image[MAX_DISK_IMAGES]; 80 static bool vnc; 81 static bool sdl; 82 static bool balloon; 83 static bool using_rootfs; 84 extern bool ioport_debug; 85 extern int active_console; 86 extern int debug_iodelay; 87 88 bool do_debug_print = false; 89 90 static int nrcpus; 91 static int vidmode = -1; 92 93 static const char * const run_usage[] = { 94 "kvm run [<options>] [<kernel image>]", 95 NULL 96 }; 97 98 static int img_name_parser(const struct option *opt, const char *arg, int unset) 99 { 100 char *sep; 101 struct stat st; 102 103 if (stat(arg, &st) == 0 && 104 S_ISDIR(st.st_mode)) { 105 char tmp[PATH_MAX]; 106 107 if (realpath(arg, tmp) == 0 || 108 virtio_9p__init(kvm, tmp, "/dev/root") < 0) 109 die("Unable to initialize virtio 9p"); 110 using_rootfs = 1; 111 return 0; 112 } 113 114 if (image_count >= MAX_DISK_IMAGES) 115 die("Currently only 4 images are supported"); 116 117 image_filename[image_count] = arg; 118 sep = strstr(arg, ","); 119 if (sep) { 120 if (strcmp(sep + 1, "ro") == 0) 121 readonly_image[image_count] = 1; 122 *sep = 0; 123 } 124 125 image_count++; 126 127 return 0; 128 } 129 130 static int virtio_9p_rootdir_parser(const struct option *opt, const char *arg, int unset) 131 { 132 char *tag_name; 133 char tmp[PATH_MAX]; 134 135 /* 136 * 9p dir can be of the form dirname,tag_name or 137 * just dirname. In the later case we use the 138 * default tag name 139 */ 140 tag_name = strstr(arg, ","); 141 if (tag_name) { 142 *tag_name = '\0'; 143 tag_name++; 144 } 145 if (realpath(arg, tmp)) { 146 if (virtio_9p__init(kvm, tmp, tag_name) < 0) 147 die("Unable to initialize virtio 9p"); 148 } else 149 die("Failed resolving 9p path"); 150 return 0; 151 } 152 153 154 static const struct option options[] = { 155 OPT_GROUP("Basic options:"), 156 OPT_STRING('\0', "name", &guest_name, "guest name", 157 "A name for the guest"), 158 OPT_INTEGER('c', "cpus", &nrcpus, "Number of CPUs"), 159 OPT_U64('m', "mem", &ram_size, "Virtual machine memory size in MiB."), 160 OPT_CALLBACK('d', "disk", NULL, "image or rootfs_dir", "Disk image or rootfs directory", img_name_parser), 161 OPT_BOOLEAN('\0', "balloon", &balloon, "Enable virtio balloon"), 162 OPT_BOOLEAN('\0', "vnc", &vnc, "Enable VNC framebuffer"), 163 OPT_BOOLEAN('\0', "sdl", &sdl, "Enable SDL framebuffer"), 164 OPT_INCR('\0', "rng", &virtio_rng, "Enable virtio Random Number Generator"), 165 OPT_CALLBACK('\0', "9p", NULL, "dir_to_share,tag_name", 166 "Enable virtio 9p to share files between host and guest", virtio_9p_rootdir_parser), 167 OPT_STRING('\0', "console", &console, "serial or virtio", 168 "Console to use"), 169 OPT_STRING('\0', "dev", &dev, "device_file", "KVM device file"), 170 171 OPT_GROUP("Kernel options:"), 172 OPT_STRING('k', "kernel", &kernel_filename, "kernel", 173 "Kernel to boot in virtual machine"), 174 OPT_STRING('i', "initrd", &initrd_filename, "initrd", 175 "Initial RAM disk image"), 176 OPT_STRING('p', "params", &kernel_cmdline, "params", 177 "Kernel command line arguments"), 178 179 OPT_GROUP("Networking options:"), 180 OPT_STRING('n', "network", &network, "user, tap, none", 181 "Network to use"), 182 OPT_STRING('\0', "host-ip", &host_ip, "a.b.c.d", 183 "Assign this address to the host side networking"), 184 OPT_STRING('\0', "guest-ip", &guest_ip, "a.b.c.d", 185 "Assign this address to the guest side networking"), 186 OPT_STRING('\0', "host-mac", &host_mac, "aa:bb:cc:dd:ee:ff", 187 "Assign this address to the host side NIC"), 188 OPT_STRING('\0', "guest-mac", &guest_mac, "aa:bb:cc:dd:ee:ff", 189 "Assign this address to the guest side NIC"), 190 OPT_STRING('\0', "tapscript", &script, "Script path", 191 "Assign a script to process created tap device"), 192 193 OPT_GROUP("BIOS options:"), 194 OPT_INTEGER('\0', "vidmode", &vidmode, 195 "Video mode"), 196 197 OPT_GROUP("Debug options:"), 198 OPT_BOOLEAN('\0', "debug", &do_debug_print, 199 "Enable debug messages"), 200 OPT_BOOLEAN('\0', "debug-single-step", &single_step, 201 "Enable single stepping"), 202 OPT_BOOLEAN('\0', "debug-ioport", &ioport_debug, 203 "Enable ioport debugging"), 204 OPT_INTEGER('\0', "debug-iodelay", &debug_iodelay, 205 "Delay IO by millisecond"), 206 OPT_END() 207 }; 208 209 /* 210 * Serialize debug printout so that the output of multiple vcpus does not 211 * get mixed up: 212 */ 213 static int printout_done; 214 215 static void handle_sigusr1(int sig) 216 { 217 struct kvm_cpu *cpu = current_kvm_cpu; 218 219 if (!cpu) 220 return; 221 222 printf("\n #\n # vCPU #%ld's dump:\n #\n", cpu->cpu_id); 223 kvm_cpu__show_registers(cpu); 224 kvm_cpu__show_code(cpu); 225 kvm_cpu__show_page_tables(cpu); 226 fflush(stdout); 227 printout_done = 1; 228 mb(); 229 } 230 231 /* Pause/resume the guest using SIGUSR2 */ 232 static int is_paused; 233 234 static void handle_sigusr2(int sig) 235 { 236 if (sig == SIGKVMRESUME && is_paused) 237 kvm__continue(); 238 else if (sig == SIGUSR2 && !is_paused) 239 kvm__pause(); 240 else 241 return; 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 void kvm_run_help(void) 450 { 451 usage_with_options(run_usage, options); 452 } 453 454 int kvm_cmd_run(int argc, const char **argv, const char *prefix) 455 { 456 struct virtio_net_parameters net_params; 457 static char real_cmdline[2048], default_name[20]; 458 struct framebuffer *fb = NULL; 459 unsigned int nr_online_cpus; 460 int exit_code = 0; 461 int max_cpus, recommended_cpus; 462 int i; 463 void *ret; 464 465 signal(SIGALRM, handle_sigalrm); 466 signal(SIGQUIT, handle_sigquit); 467 signal(SIGUSR1, handle_sigusr1); 468 signal(SIGUSR2, handle_sigusr2); 469 signal(SIGKVMSTOP, handle_sigstop); 470 signal(SIGKVMRESUME, handle_sigusr2); 471 /* ignore balloon signal by default if not enable balloon optiion */ 472 signal(SIGKVMADDMEM, SIG_IGN); 473 signal(SIGKVMDELMEM, SIG_IGN); 474 475 nr_online_cpus = sysconf(_SC_NPROCESSORS_ONLN); 476 477 while (argc != 0) { 478 argc = parse_options(argc, argv, options, run_usage, 479 PARSE_OPT_STOP_AT_NON_OPTION); 480 if (argc != 0) { 481 if (kernel_filename) { 482 fprintf(stderr, "Cannot handle parameter: " 483 "%s\n", argv[0]); 484 usage_with_options(run_usage, options); 485 return EINVAL; 486 } 487 /* first unhandled parameter is treated as a kernel 488 image 489 */ 490 kernel_filename = argv[0]; 491 argv++; 492 argc--; 493 } 494 495 } 496 497 if (!kernel_filename) 498 kernel_filename = find_kernel(); 499 500 if (!kernel_filename) { 501 kernel_usage_with_options(); 502 return EINVAL; 503 } 504 505 vmlinux_filename = find_vmlinux(); 506 507 if (nrcpus == 0) 508 nrcpus = nr_online_cpus; 509 else if (nrcpus < 1 || nrcpus > KVM_NR_CPUS) 510 die("Number of CPUs %d is out of [1;%d] range", nrcpus, KVM_NR_CPUS); 511 512 if (!ram_size) 513 ram_size = get_ram_size(nrcpus); 514 515 if (ram_size < MIN_RAM_SIZE_MB) 516 die("Not enough memory specified: %lluMB (min %lluMB)", ram_size, MIN_RAM_SIZE_MB); 517 518 if (ram_size > host_ram_size()) 519 pr_warning("Guest memory size %lluMB exceeds host physical RAM size %lluMB", ram_size, host_ram_size()); 520 521 ram_size <<= MB_SHIFT; 522 523 if (!dev) 524 dev = DEFAULT_KVM_DEV; 525 526 if (!console) 527 console = DEFAULT_CONSOLE; 528 529 if (!strncmp(console, "virtio", 6)) 530 active_console = CONSOLE_VIRTIO; 531 else 532 active_console = CONSOLE_8250; 533 534 if (!host_ip) 535 host_ip = DEFAULT_HOST_ADDR; 536 537 if (!guest_ip) 538 guest_ip = DEFAULT_GUEST_ADDR; 539 540 if (!guest_mac) 541 guest_mac = DEFAULT_GUEST_MAC; 542 543 if (!host_mac) 544 host_mac = DEFAULT_HOST_MAC; 545 546 if (!script) 547 script = DEFAULT_SCRIPT; 548 549 symbol__init(vmlinux_filename); 550 551 term_init(); 552 553 if (!guest_name) { 554 sprintf(default_name, "guest-%u", getpid()); 555 guest_name = default_name; 556 } 557 558 kvm = kvm__init(dev, ram_size, guest_name); 559 560 irq__init(kvm); 561 562 kvm->single_step = single_step; 563 564 ioeventfd__init(); 565 566 max_cpus = kvm__max_cpus(kvm); 567 recommended_cpus = kvm__recommended_cpus(kvm); 568 569 if (nrcpus > max_cpus) { 570 printf(" # Limit the number of CPUs to %d\n", max_cpus); 571 kvm->nrcpus = max_cpus; 572 } else if (nrcpus > recommended_cpus) { 573 printf(" # Warning: The maximum recommended amount of VCPUs" 574 " is %d\n", recommended_cpus); 575 } 576 577 kvm->nrcpus = nrcpus; 578 579 /* 580 * vidmode should be either specified 581 * either set by default 582 */ 583 if (vnc || sdl) { 584 if (vidmode == -1) 585 vidmode = 0x312; 586 } else 587 vidmode = 0; 588 589 memset(real_cmdline, 0, sizeof(real_cmdline)); 590 strcpy(real_cmdline, "notsc noapic noacpi pci=conf1 reboot=k panic=1 i8042.direct=1 i8042.dumbkbd=1 i8042.nopnp=1"); 591 if (vnc || sdl) { 592 strcat(real_cmdline, " video=vesafb console=tty0"); 593 } else 594 strcat(real_cmdline, " console=ttyS0 earlyprintk=serial"); 595 strcat(real_cmdline, " "); 596 if (kernel_cmdline) 597 strlcat(real_cmdline, kernel_cmdline, sizeof(real_cmdline)); 598 599 if (!using_rootfs && !image_filename[0]) { 600 if (virtio_9p__init(kvm, "/", "/dev/root") < 0) 601 die("Unable to initialize virtio 9p"); 602 603 using_rootfs = 1; 604 605 if (!strstr(real_cmdline, "init=")) 606 strlcat(real_cmdline, " init=/bin/sh ", sizeof(real_cmdline)); 607 } 608 609 if (!strstr(real_cmdline, "root=")) 610 strlcat(real_cmdline, " root=/dev/vda rw ", sizeof(real_cmdline)); 611 612 if (using_rootfs) 613 strcat(real_cmdline, " root=/dev/root rootflags=rw,trans=virtio,version=9p2000.u rootfstype=9p"); 614 615 if (image_count) { 616 kvm->nr_disks = image_count; 617 kvm->disks = disk_image__open_all(image_filename, readonly_image, image_count); 618 if (!kvm->disks) 619 die("Unable to load all disk images."); 620 621 virtio_blk__init_all(kvm); 622 } 623 624 printf(" # kvm run -k %s -m %Lu -c %d --name %s\n", kernel_filename, ram_size / 1024 / 1024, nrcpus, guest_name); 625 626 if (!kvm__load_kernel(kvm, kernel_filename, initrd_filename, 627 real_cmdline, vidmode)) 628 die("unable to load kernel %s", kernel_filename); 629 630 kvm->vmlinux = vmlinux_filename; 631 632 ioport__setup_legacy(); 633 634 rtc__init(); 635 636 serial8250__init(kvm); 637 638 pci__init(); 639 640 if (active_console == CONSOLE_VIRTIO) 641 virtio_console__init(kvm); 642 643 if (virtio_rng) 644 while (virtio_rng--) 645 virtio_rng__init(kvm); 646 647 if (balloon) 648 virtio_bln__init(kvm); 649 650 if (!network) 651 network = DEFAULT_NETWORK; 652 653 if (strncmp(network, "none", 4)) { 654 net_params.guest_ip = guest_ip; 655 net_params.host_ip = host_ip; 656 net_params.kvm = kvm; 657 net_params.script = script; 658 sscanf(guest_mac, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", 659 net_params.guest_mac, 660 net_params.guest_mac+1, 661 net_params.guest_mac+2, 662 net_params.guest_mac+3, 663 net_params.guest_mac+4, 664 net_params.guest_mac+5); 665 sscanf(host_mac, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", 666 net_params.host_mac, 667 net_params.host_mac+1, 668 net_params.host_mac+2, 669 net_params.host_mac+3, 670 net_params.host_mac+4, 671 net_params.host_mac+5); 672 673 if (!strncmp(network, "user", 4)) 674 net_params.mode = NET_MODE_USER; 675 else if (!strncmp(network, "tap", 3)) 676 net_params.mode = NET_MODE_TAP; 677 else 678 die("Unkown network mode %s, please use -network user, tap, none", network); 679 virtio_net__init(&net_params); 680 } 681 682 kvm__start_timer(kvm); 683 684 kvm__setup_bios(kvm); 685 686 for (i = 0; i < nrcpus; i++) { 687 kvm_cpus[i] = kvm_cpu__init(kvm, i); 688 if (!kvm_cpus[i]) 689 die("unable to initialize KVM VCPU"); 690 } 691 692 kvm__init_ram(kvm); 693 694 kbd__init(kvm); 695 696 if (vnc || sdl) 697 fb = vesa__init(kvm); 698 699 if (vnc) { 700 if (fb) 701 vnc__init(fb); 702 } 703 704 if (sdl) { 705 if (fb) 706 sdl__init(fb); 707 } 708 709 fb__start(); 710 711 thread_pool__init(nr_online_cpus); 712 ioeventfd__start(); 713 714 for (i = 0; i < nrcpus; i++) { 715 if (pthread_create(&kvm_cpus[i]->thread, NULL, kvm_cpu_thread, kvm_cpus[i]) != 0) 716 die("unable to create KVM VCPU thread"); 717 } 718 719 /* Only VCPU #0 is going to exit by itself when shutting down */ 720 if (pthread_join(kvm_cpus[0]->thread, &ret) != 0) 721 exit_code = 1; 722 723 for (i = 1; i < nrcpus; i++) { 724 if (kvm_cpus[i]->is_running) { 725 pthread_kill(kvm_cpus[i]->thread, SIGKVMEXIT); 726 if (pthread_join(kvm_cpus[i]->thread, &ret) != 0) 727 die("pthread_join"); 728 } 729 if (ret != NULL) 730 exit_code = 1; 731 } 732 733 fb__stop(); 734 735 virtio_blk__delete_all(kvm); 736 virtio_rng__delete_all(kvm); 737 738 disk_image__close_all(kvm->disks, image_count); 739 kvm__delete(kvm); 740 741 if (!exit_code) 742 printf("\n # KVM session ended normally.\n"); 743 744 return exit_code; 745 } 746