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/kvm-ipc.h" 35 #include "kvm/builtin-debug.h" 36 37 #include <linux/types.h> 38 #include <linux/err.h> 39 40 #include <sys/utsname.h> 41 #include <sys/types.h> 42 #include <sys/stat.h> 43 #include <termios.h> 44 #include <signal.h> 45 #include <stdlib.h> 46 #include <string.h> 47 #include <unistd.h> 48 #include <ctype.h> 49 #include <stdio.h> 50 51 #define MB_SHIFT (20) 52 #define KB_SHIFT (10) 53 #define GB_SHIFT (30) 54 55 __thread struct kvm_cpu *current_kvm_cpu; 56 57 static int kvm_run_wrapper; 58 59 bool do_debug_print = false; 60 61 static const char * const run_usage[] = { 62 "lkvm run [<options>] [<kernel image>]", 63 NULL 64 }; 65 66 enum { 67 KVM_RUN_DEFAULT, 68 KVM_RUN_SANDBOX, 69 }; 70 71 static int img_name_parser(const struct option *opt, const char *arg, int unset) 72 { 73 char path[PATH_MAX]; 74 struct stat st; 75 76 snprintf(path, PATH_MAX, "%s%s", kvm__get_dir(), arg); 77 78 if ((stat(arg, &st) == 0 && S_ISDIR(st.st_mode)) || 79 (stat(path, &st) == 0 && S_ISDIR(st.st_mode))) 80 return virtio_9p_img_name_parser(opt, arg, unset); 81 return disk_img_name_parser(opt, arg, unset); 82 } 83 84 void kvm_run_set_wrapper_sandbox(void) 85 { 86 kvm_run_wrapper = KVM_RUN_SANDBOX; 87 } 88 89 #ifndef OPT_ARCH_RUN 90 #define OPT_ARCH_RUN(...) 91 #endif 92 93 #define BUILD_OPTIONS(name, cfg, kvm) \ 94 struct option name[] = { \ 95 OPT_GROUP("Basic options:"), \ 96 OPT_STRING('\0', "name", &(cfg)->guest_name, "guest name", \ 97 "A name for the guest"), \ 98 OPT_INTEGER('c', "cpus", &(cfg)->nrcpus, "Number of CPUs"), \ 99 OPT_U64('m', "mem", &(cfg)->ram_size, "Virtual machine memory" \ 100 " size in MiB."), \ 101 OPT_CALLBACK('d', "disk", kvm, "image or rootfs_dir", "Disk " \ 102 " image or rootfs directory", img_name_parser, \ 103 kvm), \ 104 OPT_BOOLEAN('\0', "balloon", &(cfg)->balloon, "Enable virtio" \ 105 " balloon"), \ 106 OPT_BOOLEAN('\0', "vnc", &(cfg)->vnc, "Enable VNC framebuffer"),\ 107 OPT_BOOLEAN('\0', "gtk", &(cfg)->gtk, "Enable GTK framebuffer"),\ 108 OPT_BOOLEAN('\0', "sdl", &(cfg)->sdl, "Enable SDL framebuffer"),\ 109 OPT_BOOLEAN('\0', "rng", &(cfg)->virtio_rng, "Enable virtio" \ 110 " Random Number Generator"), \ 111 OPT_CALLBACK('\0', "9p", NULL, "dir_to_share,tag_name", \ 112 "Enable virtio 9p to share files between host and" \ 113 " guest", virtio_9p_rootdir_parser, kvm), \ 114 OPT_STRING('\0', "console", &(cfg)->console, "serial, virtio or"\ 115 " hv", "Console to use"), \ 116 OPT_STRING('\0', "dev", &(cfg)->dev, "device_file", \ 117 "KVM device file"), \ 118 OPT_CALLBACK('\0', "tty", NULL, "tty id", \ 119 "Remap guest TTY into a pty on the host", \ 120 tty_parser, NULL), \ 121 OPT_STRING('\0', "sandbox", &(cfg)->sandbox, "script", \ 122 "Run this script when booting into custom" \ 123 " rootfs"), \ 124 OPT_STRING('\0', "hugetlbfs", &(cfg)->hugetlbfs_path, "path", \ 125 "Hugetlbfs path"), \ 126 \ 127 OPT_GROUP("Kernel options:"), \ 128 OPT_STRING('k', "kernel", &(cfg)->kernel_filename, "kernel", \ 129 "Kernel to boot in virtual machine"), \ 130 OPT_STRING('i', "initrd", &(cfg)->initrd_filename, "initrd", \ 131 "Initial RAM disk image"), \ 132 OPT_STRING('p', "params", &(cfg)->kernel_cmdline, "params", \ 133 "Kernel command line arguments"), \ 134 OPT_STRING('f', "firmware", &(cfg)->firmware_filename, "firmware",\ 135 "Firmware image to boot in virtual machine"), \ 136 OPT_STRING('F', "flash", &(cfg)->flash_filename, "flash",\ 137 "Flash image to present to virtual machine"), \ 138 \ 139 OPT_GROUP("Networking options:"), \ 140 OPT_CALLBACK_DEFAULT('n', "network", NULL, "network params", \ 141 "Create a new guest NIC", \ 142 netdev_parser, NULL, kvm), \ 143 OPT_BOOLEAN('\0', "no-dhcp", &(cfg)->no_dhcp, "Disable kernel" \ 144 " DHCP in rootfs mode"), \ 145 \ 146 OPT_GROUP("VFIO options:"), \ 147 OPT_CALLBACK('\0', "vfio-pci", NULL, "[domain:]bus:dev.fn", \ 148 "Assign a PCI device to the virtual machine", \ 149 vfio_device_parser, kvm), \ 150 \ 151 OPT_GROUP("Debug options:"), \ 152 OPT_BOOLEAN('\0', "debug", &do_debug_print, \ 153 "Enable debug messages"), \ 154 OPT_BOOLEAN('\0', "debug-single-step", &(cfg)->single_step, \ 155 "Enable single stepping"), \ 156 OPT_BOOLEAN('\0', "debug-ioport", &(cfg)->ioport_debug, \ 157 "Enable ioport debugging"), \ 158 OPT_BOOLEAN('\0', "debug-mmio", &(cfg)->mmio_debug, \ 159 "Enable MMIO debugging"), \ 160 OPT_INTEGER('\0', "debug-iodelay", &(cfg)->debug_iodelay, \ 161 "Delay IO by millisecond"), \ 162 \ 163 OPT_ARCH(RUN, cfg) \ 164 OPT_END() \ 165 }; 166 167 static void *kvm_cpu_thread(void *arg) 168 { 169 char name[16]; 170 171 current_kvm_cpu = arg; 172 173 sprintf(name, "kvm-vcpu-%lu", current_kvm_cpu->cpu_id); 174 kvm__set_thread_name(name); 175 176 if (kvm_cpu__start(current_kvm_cpu)) 177 goto panic_kvm; 178 179 return (void *) (intptr_t) 0; 180 181 panic_kvm: 182 fprintf(stderr, "KVM exit reason: %u (\"%s\")\n", 183 current_kvm_cpu->kvm_run->exit_reason, 184 kvm_exit_reasons[current_kvm_cpu->kvm_run->exit_reason]); 185 if (current_kvm_cpu->kvm_run->exit_reason == KVM_EXIT_UNKNOWN) 186 fprintf(stderr, "KVM exit code: 0x%llu\n", 187 (unsigned long long)current_kvm_cpu->kvm_run->hw.hardware_exit_reason); 188 189 kvm_cpu__set_debug_fd(STDOUT_FILENO); 190 kvm_cpu__show_registers(current_kvm_cpu); 191 kvm_cpu__show_code(current_kvm_cpu); 192 kvm_cpu__show_page_tables(current_kvm_cpu); 193 194 return (void *) (intptr_t) 1; 195 } 196 197 static char kernel[PATH_MAX]; 198 199 static const char *host_kernels[] = { 200 "/boot/vmlinuz", 201 "/boot/bzImage", 202 NULL 203 }; 204 205 static const char *default_kernels[] = { 206 "./bzImage", 207 "arch/" BUILD_ARCH "/boot/bzImage", 208 "../../arch/" BUILD_ARCH "/boot/bzImage", 209 NULL 210 }; 211 212 static const char *default_vmlinux[] = { 213 "vmlinux", 214 "../../../vmlinux", 215 "../../vmlinux", 216 NULL 217 }; 218 219 static void kernel_usage_with_options(void) 220 { 221 const char **k; 222 struct utsname uts; 223 224 fprintf(stderr, "Fatal: could not find default kernel image in:\n"); 225 k = &default_kernels[0]; 226 while (*k) { 227 fprintf(stderr, "\t%s\n", *k); 228 k++; 229 } 230 231 if (uname(&uts) < 0) 232 return; 233 234 k = &host_kernels[0]; 235 while (*k) { 236 if (snprintf(kernel, PATH_MAX, "%s-%s", *k, uts.release) < 0) 237 return; 238 fprintf(stderr, "\t%s\n", kernel); 239 k++; 240 } 241 fprintf(stderr, "\nPlease see '%s run --help' for more options.\n\n", 242 KVM_BINARY_NAME); 243 } 244 245 static u64 host_ram_size(void) 246 { 247 long page_size; 248 long nr_pages; 249 250 nr_pages = sysconf(_SC_PHYS_PAGES); 251 if (nr_pages < 0) { 252 pr_warning("sysconf(_SC_PHYS_PAGES) failed"); 253 return 0; 254 } 255 256 page_size = sysconf(_SC_PAGE_SIZE); 257 if (page_size < 0) { 258 pr_warning("sysconf(_SC_PAGE_SIZE) failed"); 259 return 0; 260 } 261 262 return (nr_pages * page_size) >> MB_SHIFT; 263 } 264 265 /* 266 * If user didn't specify how much memory it wants to allocate for the guest, 267 * avoid filling the whole host RAM. 268 */ 269 #define RAM_SIZE_RATIO 0.8 270 271 static u64 get_ram_size(int nr_cpus) 272 { 273 u64 available; 274 u64 ram_size; 275 276 ram_size = 64 * (nr_cpus + 3); 277 278 available = host_ram_size() * RAM_SIZE_RATIO; 279 if (!available) 280 available = MIN_RAM_SIZE_MB; 281 282 if (ram_size > available) 283 ram_size = available; 284 285 return ram_size; 286 } 287 288 static const char *find_kernel(void) 289 { 290 const char **k; 291 struct stat st; 292 struct utsname uts; 293 294 k = &default_kernels[0]; 295 while (*k) { 296 if (stat(*k, &st) < 0 || !S_ISREG(st.st_mode)) { 297 k++; 298 continue; 299 } 300 strlcpy(kernel, *k, PATH_MAX); 301 return kernel; 302 } 303 304 if (uname(&uts) < 0) 305 return NULL; 306 307 k = &host_kernels[0]; 308 while (*k) { 309 if (snprintf(kernel, PATH_MAX, "%s-%s", *k, uts.release) < 0) 310 return NULL; 311 312 if (stat(kernel, &st) < 0 || !S_ISREG(st.st_mode)) { 313 k++; 314 continue; 315 } 316 return kernel; 317 318 } 319 return NULL; 320 } 321 322 static const char *find_vmlinux(void) 323 { 324 const char **vmlinux; 325 326 vmlinux = &default_vmlinux[0]; 327 while (*vmlinux) { 328 struct stat st; 329 330 if (stat(*vmlinux, &st) < 0 || !S_ISREG(st.st_mode)) { 331 vmlinux++; 332 continue; 333 } 334 return *vmlinux; 335 } 336 return NULL; 337 } 338 339 void kvm_run_help(void) 340 { 341 struct kvm *kvm = NULL; 342 343 BUILD_OPTIONS(options, &kvm->cfg, kvm); 344 usage_with_options(run_usage, options); 345 } 346 347 static int kvm_run_set_sandbox(struct kvm *kvm) 348 { 349 const char *guestfs_name = kvm->cfg.custom_rootfs_name; 350 char path[PATH_MAX], script[PATH_MAX], *tmp; 351 352 snprintf(path, PATH_MAX, "%s%s/virt/sandbox.sh", kvm__get_dir(), guestfs_name); 353 354 remove(path); 355 356 if (kvm->cfg.sandbox == NULL) 357 return 0; 358 359 tmp = realpath(kvm->cfg.sandbox, NULL); 360 if (tmp == NULL) 361 return -ENOMEM; 362 363 snprintf(script, PATH_MAX, "/host/%s", tmp); 364 free(tmp); 365 366 return symlink(script, path); 367 } 368 369 static void kvm_write_sandbox_cmd_exactly(int fd, const char *arg) 370 { 371 const char *single_quote; 372 373 if (!*arg) { /* zero length string */ 374 if (write(fd, "''", 2) <= 0) 375 die("Failed writing sandbox script"); 376 return; 377 } 378 379 while (*arg) { 380 single_quote = strchrnul(arg, '\''); 381 382 /* write non-single-quote string as #('string') */ 383 if (arg != single_quote) { 384 if (write(fd, "'", 1) <= 0 || 385 write(fd, arg, single_quote - arg) <= 0 || 386 write(fd, "'", 1) <= 0) 387 die("Failed writing sandbox script"); 388 } 389 390 /* write single quote as #("'") */ 391 if (*single_quote) { 392 if (write(fd, "\"'\"", 3) <= 0) 393 die("Failed writing sandbox script"); 394 } else 395 break; 396 397 arg = single_quote + 1; 398 } 399 } 400 401 static void resolve_program(const char *src, char *dst, size_t len) 402 { 403 struct stat st; 404 int err; 405 406 err = stat(src, &st); 407 408 if (!err && S_ISREG(st.st_mode)) { 409 char resolved_path[PATH_MAX]; 410 411 if (!realpath(src, resolved_path)) 412 die("Unable to resolve program %s: %s\n", src, strerror(errno)); 413 414 if (snprintf(dst, len, "/host%s", resolved_path) >= (int)len) 415 die("Pathname too long: %s -> %s\n", src, resolved_path); 416 417 } else 418 strlcpy(dst, src, len); 419 } 420 421 static void kvm_run_write_sandbox_cmd(struct kvm *kvm, const char **argv, int argc) 422 { 423 const char script_hdr[] = "#! /bin/bash\n\n"; 424 char program[PATH_MAX]; 425 int fd; 426 427 remove(kvm->cfg.sandbox); 428 429 fd = open(kvm->cfg.sandbox, O_RDWR | O_CREAT, 0777); 430 if (fd < 0) 431 die("Failed creating sandbox script"); 432 433 if (write(fd, script_hdr, sizeof(script_hdr) - 1) <= 0) 434 die("Failed writing sandbox script"); 435 436 resolve_program(argv[0], program, PATH_MAX); 437 kvm_write_sandbox_cmd_exactly(fd, program); 438 439 argv++; 440 argc--; 441 442 while (argc) { 443 if (write(fd, " ", 1) <= 0) 444 die("Failed writing sandbox script"); 445 446 kvm_write_sandbox_cmd_exactly(fd, argv[0]); 447 argv++; 448 argc--; 449 } 450 if (write(fd, "\n", 1) <= 0) 451 die("Failed writing sandbox script"); 452 453 close(fd); 454 } 455 456 static struct kvm *kvm_cmd_run_init(int argc, const char **argv) 457 { 458 static char real_cmdline[2048], default_name[20]; 459 unsigned int nr_online_cpus; 460 struct kvm *kvm = kvm__new(); 461 bool video; 462 463 if (IS_ERR(kvm)) 464 return kvm; 465 466 nr_online_cpus = sysconf(_SC_NPROCESSORS_ONLN); 467 kvm->cfg.custom_rootfs_name = "default"; 468 469 while (argc != 0) { 470 BUILD_OPTIONS(options, &kvm->cfg, kvm); 471 argc = parse_options(argc, argv, options, run_usage, 472 PARSE_OPT_STOP_AT_NON_OPTION | 473 PARSE_OPT_KEEP_DASHDASH); 474 if (argc != 0) { 475 /* Cusrom options, should have been handled elsewhere */ 476 if (strcmp(argv[0], "--") == 0) { 477 if (kvm_run_wrapper == KVM_RUN_SANDBOX) { 478 kvm->cfg.sandbox = DEFAULT_SANDBOX_FILENAME; 479 kvm_run_write_sandbox_cmd(kvm, argv+1, argc-1); 480 break; 481 } 482 } 483 484 if ((kvm_run_wrapper == KVM_RUN_DEFAULT && kvm->cfg.kernel_filename) || 485 (kvm_run_wrapper == KVM_RUN_SANDBOX && kvm->cfg.sandbox)) { 486 fprintf(stderr, "Cannot handle parameter: " 487 "%s\n", argv[0]); 488 usage_with_options(run_usage, options); 489 free(kvm); 490 return ERR_PTR(-EINVAL); 491 } 492 if (kvm_run_wrapper == KVM_RUN_SANDBOX) { 493 /* 494 * first unhandled parameter is treated as 495 * sandbox command 496 */ 497 kvm->cfg.sandbox = DEFAULT_SANDBOX_FILENAME; 498 kvm_run_write_sandbox_cmd(kvm, argv, argc); 499 } else { 500 /* 501 * first unhandled parameter is treated as a kernel 502 * image 503 */ 504 kvm->cfg.kernel_filename = argv[0]; 505 } 506 argv++; 507 argc--; 508 } 509 510 } 511 512 kvm->nr_disks = kvm->cfg.image_count; 513 514 if (!kvm->cfg.kernel_filename && !kvm->cfg.firmware_filename) { 515 kvm->cfg.kernel_filename = find_kernel(); 516 517 if (!kvm->cfg.kernel_filename) { 518 kernel_usage_with_options(); 519 return ERR_PTR(-EINVAL); 520 } 521 } 522 523 kvm->cfg.vmlinux_filename = find_vmlinux(); 524 kvm->vmlinux = kvm->cfg.vmlinux_filename; 525 526 if (kvm->cfg.nrcpus == 0) 527 kvm->cfg.nrcpus = nr_online_cpus; 528 529 if (!kvm->cfg.ram_size) 530 kvm->cfg.ram_size = get_ram_size(kvm->cfg.nrcpus); 531 532 if (kvm->cfg.ram_size > host_ram_size()) 533 pr_warning("Guest memory size %lluMB exceeds host physical RAM size %lluMB", 534 (unsigned long long)kvm->cfg.ram_size, 535 (unsigned long long)host_ram_size()); 536 537 kvm->cfg.ram_size <<= MB_SHIFT; 538 539 if (!kvm->cfg.dev) 540 kvm->cfg.dev = DEFAULT_KVM_DEV; 541 542 if (!kvm->cfg.console) 543 kvm->cfg.console = DEFAULT_CONSOLE; 544 545 video = kvm->cfg.vnc || kvm->cfg.sdl || kvm->cfg.gtk; 546 if (video) { 547 if ((kvm->cfg.vnc && (kvm->cfg.sdl || kvm->cfg.gtk)) || 548 (kvm->cfg.sdl && kvm->cfg.gtk)) 549 die("Only one of --vnc, --sdl or --gtk can be specified"); 550 } 551 552 if (!strncmp(kvm->cfg.console, "virtio", 6)) 553 kvm->cfg.active_console = CONSOLE_VIRTIO; 554 else if (!strncmp(kvm->cfg.console, "serial", 6)) 555 kvm->cfg.active_console = CONSOLE_8250; 556 else if (!strncmp(kvm->cfg.console, "hv", 2)) 557 kvm->cfg.active_console = CONSOLE_HV; 558 else 559 pr_warning("No console!"); 560 561 if (!kvm->cfg.host_ip) 562 kvm->cfg.host_ip = DEFAULT_HOST_ADDR; 563 564 if (!kvm->cfg.guest_ip) 565 kvm->cfg.guest_ip = DEFAULT_GUEST_ADDR; 566 567 if (!kvm->cfg.guest_mac) 568 kvm->cfg.guest_mac = DEFAULT_GUEST_MAC; 569 570 if (!kvm->cfg.host_mac) 571 kvm->cfg.host_mac = DEFAULT_HOST_MAC; 572 573 if (!kvm->cfg.script) 574 kvm->cfg.script = DEFAULT_SCRIPT; 575 576 if (!kvm->cfg.network) 577 kvm->cfg.network = DEFAULT_NETWORK; 578 579 memset(real_cmdline, 0, sizeof(real_cmdline)); 580 kvm__arch_set_cmdline(real_cmdline, video); 581 582 if (video) { 583 strcat(real_cmdline, " console=tty0"); 584 } else { 585 switch (kvm->cfg.active_console) { 586 case CONSOLE_HV: 587 /* Fallthrough */ 588 case CONSOLE_VIRTIO: 589 strcat(real_cmdline, " console=hvc0"); 590 break; 591 case CONSOLE_8250: 592 strcat(real_cmdline, " console=ttyS0"); 593 break; 594 } 595 } 596 597 if (!kvm->cfg.guest_name) { 598 if (kvm->cfg.custom_rootfs) { 599 kvm->cfg.guest_name = kvm->cfg.custom_rootfs_name; 600 } else { 601 sprintf(default_name, "guest-%u", getpid()); 602 kvm->cfg.guest_name = default_name; 603 } 604 } 605 606 if (!kvm->cfg.using_rootfs && !kvm->cfg.disk_image[0].filename && !kvm->cfg.initrd_filename) { 607 char tmp[PATH_MAX]; 608 609 kvm_setup_create_new(kvm->cfg.custom_rootfs_name); 610 kvm_setup_resolv(kvm->cfg.custom_rootfs_name); 611 612 snprintf(tmp, PATH_MAX, "%s%s", kvm__get_dir(), "default"); 613 if (virtio_9p__register(kvm, tmp, "/dev/root") < 0) 614 die("Unable to initialize virtio 9p"); 615 if (virtio_9p__register(kvm, "/", "hostfs") < 0) 616 die("Unable to initialize virtio 9p"); 617 kvm->cfg.using_rootfs = kvm->cfg.custom_rootfs = 1; 618 } 619 620 if (kvm->cfg.using_rootfs) { 621 strcat(real_cmdline, " rw rootflags=trans=virtio,version=9p2000.L,cache=loose rootfstype=9p"); 622 if (kvm->cfg.custom_rootfs) { 623 kvm_run_set_sandbox(kvm); 624 625 #ifdef CONFIG_GUEST_PRE_INIT 626 strcat(real_cmdline, " init=/virt/pre_init"); 627 #else 628 strcat(real_cmdline, " init=/virt/init"); 629 #endif 630 631 if (!kvm->cfg.no_dhcp) 632 strcat(real_cmdline, " ip=dhcp"); 633 if (kvm_setup_guest_init(kvm->cfg.custom_rootfs_name)) 634 die("Failed to setup init for guest."); 635 } 636 } else if (!kvm->cfg.kernel_cmdline || !strstr(kvm->cfg.kernel_cmdline, "root=")) { 637 strlcat(real_cmdline, " root=/dev/vda rw ", sizeof(real_cmdline)); 638 } 639 640 if (kvm->cfg.kernel_cmdline) { 641 strcat(real_cmdline, " "); 642 strlcat(real_cmdline, kvm->cfg.kernel_cmdline, sizeof(real_cmdline)); 643 } 644 645 kvm->cfg.real_cmdline = real_cmdline; 646 647 if (kvm->cfg.kernel_filename) { 648 printf(" # %s run -k %s -m %Lu -c %d --name %s\n", KVM_BINARY_NAME, 649 kvm->cfg.kernel_filename, 650 (unsigned long long)kvm->cfg.ram_size / 1024 / 1024, 651 kvm->cfg.nrcpus, kvm->cfg.guest_name); 652 } else if (kvm->cfg.firmware_filename) { 653 printf(" # %s run --firmware %s -m %Lu -c %d --name %s\n", KVM_BINARY_NAME, 654 kvm->cfg.firmware_filename, 655 (unsigned long long)kvm->cfg.ram_size / 1024 / 1024, 656 kvm->cfg.nrcpus, kvm->cfg.guest_name); 657 } 658 659 if (init_list__init(kvm) < 0) 660 die ("Initialisation failed"); 661 662 return kvm; 663 } 664 665 static int kvm_cmd_run_work(struct kvm *kvm) 666 { 667 int i; 668 669 for (i = 0; i < kvm->nrcpus; i++) { 670 if (pthread_create(&kvm->cpus[i]->thread, NULL, kvm_cpu_thread, kvm->cpus[i]) != 0) 671 die("unable to create KVM VCPU thread"); 672 } 673 674 /* Only VCPU #0 is going to exit by itself when shutting down */ 675 if (pthread_join(kvm->cpus[0]->thread, NULL) != 0) 676 die("unable to join with vcpu 0"); 677 678 return kvm_cpu__exit(kvm); 679 } 680 681 static void kvm_cmd_run_exit(struct kvm *kvm, int guest_ret) 682 { 683 compat__print_all_messages(); 684 685 init_list__exit(kvm); 686 687 if (guest_ret == 0) 688 printf("\n # KVM session ended normally.\n"); 689 } 690 691 int kvm_cmd_run(int argc, const char **argv, const char *prefix) 692 { 693 int ret = -EFAULT; 694 struct kvm *kvm; 695 696 kvm = kvm_cmd_run_init(argc, argv); 697 if (IS_ERR(kvm)) 698 return PTR_ERR(kvm); 699 700 ret = kvm_cmd_run_work(kvm); 701 kvm_cmd_run_exit(kvm, ret); 702 703 return ret; 704 } 705