1 /*- 2 * Copyright (c) 2011 NetApp, Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include <sys/types.h> 33 #include <sys/mman.h> 34 #include <sys/time.h> 35 36 #include <machine/segments.h> 37 38 #include <stdio.h> 39 #include <stdlib.h> 40 #include <libgen.h> 41 #include <unistd.h> 42 #include <assert.h> 43 #include <errno.h> 44 #include <signal.h> 45 #include <pthread.h> 46 #include <pthread_np.h> 47 48 #include <machine/vmm.h> 49 #include <vmmapi.h> 50 51 #include "bhyverun.h" 52 #include "acpi.h" 53 #include "inout.h" 54 #include "dbgport.h" 55 #include "mem.h" 56 #include "mevent.h" 57 #include "mptbl.h" 58 #include "pci_emul.h" 59 #include "xmsr.h" 60 #include "ioapic.h" 61 #include "spinup_ap.h" 62 #include "rtc.h" 63 64 #define DEFAULT_GUEST_HZ 100 65 #define DEFAULT_GUEST_TSLICE 200 66 67 #define GUEST_NIO_PORT 0x488 /* guest upcalls via i/o port */ 68 69 #define VMEXIT_SWITCH 0 /* force vcpu switch in mux mode */ 70 #define VMEXIT_CONTINUE 1 /* continue from next instruction */ 71 #define VMEXIT_RESTART 2 /* restart current instruction */ 72 #define VMEXIT_ABORT 3 /* abort the vm run loop */ 73 #define VMEXIT_RESET 4 /* guest machine has reset */ 74 75 #define MB (1024UL * 1024) 76 #define GB (1024UL * MB) 77 78 typedef int (*vmexit_handler_t)(struct vmctx *, struct vm_exit *, int *vcpu); 79 80 int guest_tslice = DEFAULT_GUEST_TSLICE; 81 int guest_hz = DEFAULT_GUEST_HZ; 82 char *vmname; 83 84 int guest_ncpus; 85 86 static int pincpu = -1; 87 static int guest_vcpu_mux; 88 static int guest_vmexit_on_hlt, guest_vmexit_on_pause, disable_x2apic; 89 90 static int foundcpus; 91 92 static int strictio; 93 94 static int acpi; 95 96 static char *progname; 97 static const int BSP = 0; 98 99 static int cpumask; 100 101 static void vm_loop(struct vmctx *ctx, int vcpu, uint64_t rip); 102 103 struct vm_exit vmexit[VM_MAXCPU]; 104 105 struct fbsdstats { 106 uint64_t vmexit_bogus; 107 uint64_t vmexit_bogus_switch; 108 uint64_t vmexit_hlt; 109 uint64_t vmexit_pause; 110 uint64_t vmexit_mtrap; 111 uint64_t vmexit_paging; 112 uint64_t cpu_switch_rotate; 113 uint64_t cpu_switch_direct; 114 int io_reset; 115 } stats; 116 117 struct mt_vmm_info { 118 pthread_t mt_thr; 119 struct vmctx *mt_ctx; 120 int mt_vcpu; 121 } mt_vmm_info[VM_MAXCPU]; 122 123 static void 124 usage(int code) 125 { 126 127 fprintf(stderr, 128 "Usage: %s [-aehABHIP][-g <gdb port>][-z <hz>][-s <pci>]" 129 "[-S <pci>][-p pincpu][-n <pci>][-m lowmem][-M highmem]" 130 " <vmname>\n" 131 " -a: local apic is in XAPIC mode (default is X2APIC)\n" 132 " -A: create an ACPI table\n" 133 " -g: gdb port (default is %d and 0 means don't open)\n" 134 " -c: # cpus (default 1)\n" 135 " -p: pin vcpu 'n' to host cpu 'pincpu + n'\n" 136 " -B: inject breakpoint exception on vm entry\n" 137 " -H: vmexit from the guest on hlt\n" 138 " -I: present an ioapic to the guest\n" 139 " -P: vmexit from the guest on pause\n" 140 " -e: exit on unhandled i/o access\n" 141 " -h: help\n" 142 " -z: guest hz (default is %d)\n" 143 " -s: <slot,driver,configinfo> PCI slot config\n" 144 " -S: <slot,driver,configinfo> legacy PCI slot config\n" 145 " -m: memory size in MB\n" 146 " -x: mux vcpus to 1 hcpu\n" 147 " -t: mux vcpu timeslice hz (default %d)\n", 148 progname, DEFAULT_GDB_PORT, DEFAULT_GUEST_HZ, 149 DEFAULT_GUEST_TSLICE); 150 exit(code); 151 } 152 153 void * 154 paddr_guest2host(struct vmctx *ctx, uintptr_t gaddr, size_t len) 155 { 156 157 return (vm_map_gpa(ctx, gaddr, len)); 158 } 159 160 int 161 fbsdrun_disable_x2apic(void) 162 { 163 164 return (disable_x2apic); 165 } 166 167 int 168 fbsdrun_vmexit_on_pause(void) 169 { 170 171 return (guest_vmexit_on_pause); 172 } 173 174 int 175 fbsdrun_vmexit_on_hlt(void) 176 { 177 178 return (guest_vmexit_on_hlt); 179 } 180 181 int 182 fbsdrun_muxed(void) 183 { 184 185 return (guest_vcpu_mux); 186 } 187 188 static void * 189 fbsdrun_start_thread(void *param) 190 { 191 char tname[MAXCOMLEN + 1]; 192 struct mt_vmm_info *mtp; 193 int vcpu; 194 195 mtp = param; 196 vcpu = mtp->mt_vcpu; 197 198 snprintf(tname, sizeof(tname), "%s vcpu %d", vmname, vcpu); 199 pthread_set_name_np(mtp->mt_thr, tname); 200 201 vm_loop(mtp->mt_ctx, vcpu, vmexit[vcpu].rip); 202 203 /* not reached */ 204 exit(1); 205 return (NULL); 206 } 207 208 void 209 fbsdrun_addcpu(struct vmctx *ctx, int vcpu, uint64_t rip) 210 { 211 int error; 212 213 if (cpumask & (1 << vcpu)) { 214 fprintf(stderr, "addcpu: attempting to add existing cpu %d\n", 215 vcpu); 216 exit(1); 217 } 218 219 cpumask |= 1 << vcpu; 220 foundcpus++; 221 222 /* 223 * Set up the vmexit struct to allow execution to start 224 * at the given RIP 225 */ 226 vmexit[vcpu].rip = rip; 227 vmexit[vcpu].inst_length = 0; 228 229 if (vcpu == BSP || !guest_vcpu_mux){ 230 mt_vmm_info[vcpu].mt_ctx = ctx; 231 mt_vmm_info[vcpu].mt_vcpu = vcpu; 232 233 error = pthread_create(&mt_vmm_info[vcpu].mt_thr, NULL, 234 fbsdrun_start_thread, &mt_vmm_info[vcpu]); 235 assert(error == 0); 236 } 237 } 238 239 static int 240 fbsdrun_get_next_cpu(int curcpu) 241 { 242 243 /* 244 * Get the next available CPU. Assumes they arrive 245 * in ascending order with no gaps. 246 */ 247 return ((curcpu + 1) % foundcpus); 248 } 249 250 static int 251 vmexit_catch_reset(void) 252 { 253 stats.io_reset++; 254 return (VMEXIT_RESET); 255 } 256 257 static int 258 vmexit_catch_inout(void) 259 { 260 return (VMEXIT_ABORT); 261 } 262 263 static int 264 vmexit_handle_notify(struct vmctx *ctx, struct vm_exit *vme, int *pvcpu, 265 uint32_t eax) 266 { 267 #if PG_DEBUG /* put all types of debug here */ 268 if (eax == 0) { 269 pause_noswitch = 1; 270 } else if (eax == 1) { 271 pause_noswitch = 0; 272 } else { 273 pause_noswitch = 0; 274 if (eax == 5) { 275 vm_set_capability(ctx, *pvcpu, VM_CAP_MTRAP_EXIT, 1); 276 } 277 } 278 #endif 279 return (VMEXIT_CONTINUE); 280 } 281 282 static int 283 vmexit_inout(struct vmctx *ctx, struct vm_exit *vme, int *pvcpu) 284 { 285 int error; 286 int bytes, port, in, out; 287 uint32_t eax; 288 int vcpu; 289 290 vcpu = *pvcpu; 291 292 port = vme->u.inout.port; 293 bytes = vme->u.inout.bytes; 294 eax = vme->u.inout.eax; 295 in = vme->u.inout.in; 296 out = !in; 297 298 /* We don't deal with these */ 299 if (vme->u.inout.string || vme->u.inout.rep) 300 return (VMEXIT_ABORT); 301 302 /* Special case of guest reset */ 303 if (out && port == 0x64 && (uint8_t)eax == 0xFE) 304 return (vmexit_catch_reset()); 305 306 /* Extra-special case of host notifications */ 307 if (out && port == GUEST_NIO_PORT) 308 return (vmexit_handle_notify(ctx, vme, pvcpu, eax)); 309 310 error = emulate_inout(ctx, vcpu, in, port, bytes, &eax, strictio); 311 if (error == 0 && in) 312 error = vm_set_register(ctx, vcpu, VM_REG_GUEST_RAX, eax); 313 314 if (error == 0) 315 return (VMEXIT_CONTINUE); 316 else { 317 fprintf(stderr, "Unhandled %s%c 0x%04x\n", 318 in ? "in" : "out", 319 bytes == 1 ? 'b' : (bytes == 2 ? 'w' : 'l'), port); 320 return (vmexit_catch_inout()); 321 } 322 } 323 324 static int 325 vmexit_rdmsr(struct vmctx *ctx, struct vm_exit *vme, int *pvcpu) 326 { 327 fprintf(stderr, "vm exit rdmsr 0x%x, cpu %d\n", vme->u.msr.code, 328 *pvcpu); 329 return (VMEXIT_ABORT); 330 } 331 332 static int 333 vmexit_wrmsr(struct vmctx *ctx, struct vm_exit *vme, int *pvcpu) 334 { 335 int newcpu; 336 int retval = VMEXIT_CONTINUE; 337 338 newcpu = emulate_wrmsr(ctx, *pvcpu, vme->u.msr.code,vme->u.msr.wval); 339 340 if (guest_vcpu_mux && *pvcpu != newcpu) { 341 retval = VMEXIT_SWITCH; 342 *pvcpu = newcpu; 343 } 344 345 return (retval); 346 } 347 348 static int 349 vmexit_spinup_ap(struct vmctx *ctx, struct vm_exit *vme, int *pvcpu) 350 { 351 int newcpu; 352 int retval = VMEXIT_CONTINUE; 353 354 newcpu = spinup_ap(ctx, *pvcpu, 355 vme->u.spinup_ap.vcpu, vme->u.spinup_ap.rip); 356 357 if (guest_vcpu_mux && *pvcpu != newcpu) { 358 retval = VMEXIT_SWITCH; 359 *pvcpu = newcpu; 360 } 361 362 return (retval); 363 } 364 365 static int 366 vmexit_vmx(struct vmctx *ctx, struct vm_exit *vmexit, int *pvcpu) 367 { 368 369 fprintf(stderr, "vm exit[%d]\n", *pvcpu); 370 fprintf(stderr, "\treason\t\tVMX\n"); 371 fprintf(stderr, "\trip\t\t0x%016lx\n", vmexit->rip); 372 fprintf(stderr, "\tinst_length\t%d\n", vmexit->inst_length); 373 fprintf(stderr, "\terror\t\t%d\n", vmexit->u.vmx.error); 374 fprintf(stderr, "\texit_reason\t%u\n", vmexit->u.vmx.exit_reason); 375 fprintf(stderr, "\tqualification\t0x%016lx\n", 376 vmexit->u.vmx.exit_qualification); 377 378 return (VMEXIT_ABORT); 379 } 380 381 static int bogus_noswitch = 1; 382 383 static int 384 vmexit_bogus(struct vmctx *ctx, struct vm_exit *vmexit, int *pvcpu) 385 { 386 stats.vmexit_bogus++; 387 388 if (!guest_vcpu_mux || guest_ncpus == 1 || bogus_noswitch) { 389 return (VMEXIT_RESTART); 390 } else { 391 stats.vmexit_bogus_switch++; 392 vmexit->inst_length = 0; 393 *pvcpu = -1; 394 return (VMEXIT_SWITCH); 395 } 396 } 397 398 static int 399 vmexit_hlt(struct vmctx *ctx, struct vm_exit *vmexit, int *pvcpu) 400 { 401 stats.vmexit_hlt++; 402 if (fbsdrun_muxed()) { 403 *pvcpu = -1; 404 return (VMEXIT_SWITCH); 405 } else { 406 /* 407 * Just continue execution with the next instruction. We use 408 * the HLT VM exit as a way to be friendly with the host 409 * scheduler. 410 */ 411 return (VMEXIT_CONTINUE); 412 } 413 } 414 415 static int pause_noswitch; 416 417 static int 418 vmexit_pause(struct vmctx *ctx, struct vm_exit *vmexit, int *pvcpu) 419 { 420 stats.vmexit_pause++; 421 422 if (fbsdrun_muxed() && !pause_noswitch) { 423 *pvcpu = -1; 424 return (VMEXIT_SWITCH); 425 } else { 426 return (VMEXIT_CONTINUE); 427 } 428 } 429 430 static int 431 vmexit_mtrap(struct vmctx *ctx, struct vm_exit *vmexit, int *pvcpu) 432 { 433 stats.vmexit_mtrap++; 434 435 return (VMEXIT_RESTART); 436 } 437 438 static int 439 vmexit_paging(struct vmctx *ctx, struct vm_exit *vmexit, int *pvcpu) 440 { 441 int err; 442 stats.vmexit_paging++; 443 444 err = emulate_mem(ctx, *pvcpu, vmexit->u.paging.gpa, 445 &vmexit->u.paging.vie); 446 447 if (err) { 448 if (err == EINVAL) { 449 fprintf(stderr, 450 "Failed to emulate instruction at 0x%lx\n", 451 vmexit->rip); 452 } else if (err == ESRCH) { 453 fprintf(stderr, "Unhandled memory access to 0x%lx\n", 454 vmexit->u.paging.gpa); 455 } 456 457 return (VMEXIT_ABORT); 458 } 459 460 return (VMEXIT_CONTINUE); 461 } 462 463 static void 464 sigalrm(int sig) 465 { 466 return; 467 } 468 469 static void 470 setup_timeslice(void) 471 { 472 struct sigaction sa; 473 struct itimerval itv; 474 int error; 475 476 /* 477 * Setup a realtime timer to generate a SIGALRM at a 478 * frequency of 'guest_tslice' ticks per second. 479 */ 480 sigemptyset(&sa.sa_mask); 481 sa.sa_flags = 0; 482 sa.sa_handler = sigalrm; 483 484 error = sigaction(SIGALRM, &sa, NULL); 485 assert(error == 0); 486 487 itv.it_interval.tv_sec = 0; 488 itv.it_interval.tv_usec = 1000000 / guest_tslice; 489 itv.it_value.tv_sec = 0; 490 itv.it_value.tv_usec = 1000000 / guest_tslice; 491 492 error = setitimer(ITIMER_REAL, &itv, NULL); 493 assert(error == 0); 494 } 495 496 static vmexit_handler_t handler[VM_EXITCODE_MAX] = { 497 [VM_EXITCODE_INOUT] = vmexit_inout, 498 [VM_EXITCODE_VMX] = vmexit_vmx, 499 [VM_EXITCODE_BOGUS] = vmexit_bogus, 500 [VM_EXITCODE_RDMSR] = vmexit_rdmsr, 501 [VM_EXITCODE_WRMSR] = vmexit_wrmsr, 502 [VM_EXITCODE_MTRAP] = vmexit_mtrap, 503 [VM_EXITCODE_PAGING] = vmexit_paging, 504 [VM_EXITCODE_SPINUP_AP] = vmexit_spinup_ap, 505 }; 506 507 static void 508 vm_loop(struct vmctx *ctx, int vcpu, uint64_t rip) 509 { 510 cpuset_t mask; 511 int error, rc, prevcpu; 512 enum vm_exitcode exitcode; 513 514 if (guest_vcpu_mux) 515 setup_timeslice(); 516 517 if (pincpu >= 0) { 518 CPU_ZERO(&mask); 519 CPU_SET(pincpu + vcpu, &mask); 520 error = pthread_setaffinity_np(pthread_self(), 521 sizeof(mask), &mask); 522 assert(error == 0); 523 } 524 525 while (1) { 526 error = vm_run(ctx, vcpu, rip, &vmexit[vcpu]); 527 if (error != 0) { 528 /* 529 * It is possible that 'vmmctl' or some other process 530 * has transitioned the vcpu to CANNOT_RUN state right 531 * before we tried to transition it to RUNNING. 532 * 533 * This is expected to be temporary so just retry. 534 */ 535 if (errno == EBUSY) 536 continue; 537 else 538 break; 539 } 540 541 prevcpu = vcpu; 542 543 exitcode = vmexit[vcpu].exitcode; 544 if (exitcode >= VM_EXITCODE_MAX || handler[exitcode] == NULL) { 545 fprintf(stderr, "vm_loop: unexpected exitcode 0x%x\n", 546 exitcode); 547 exit(1); 548 } 549 550 rc = (*handler[exitcode])(ctx, &vmexit[vcpu], &vcpu); 551 552 switch (rc) { 553 case VMEXIT_SWITCH: 554 assert(guest_vcpu_mux); 555 if (vcpu == -1) { 556 stats.cpu_switch_rotate++; 557 vcpu = fbsdrun_get_next_cpu(prevcpu); 558 } else { 559 stats.cpu_switch_direct++; 560 } 561 /* fall through */ 562 case VMEXIT_CONTINUE: 563 rip = vmexit[vcpu].rip + vmexit[vcpu].inst_length; 564 break; 565 case VMEXIT_RESTART: 566 rip = vmexit[vcpu].rip; 567 break; 568 case VMEXIT_RESET: 569 exit(0); 570 default: 571 exit(1); 572 } 573 } 574 fprintf(stderr, "vm_run error %d, errno %d\n", error, errno); 575 } 576 577 static int 578 num_vcpus_allowed(struct vmctx *ctx) 579 { 580 int tmp, error; 581 582 error = vm_get_capability(ctx, BSP, VM_CAP_UNRESTRICTED_GUEST, &tmp); 583 584 /* 585 * The guest is allowed to spinup more than one processor only if the 586 * UNRESTRICTED_GUEST capability is available. 587 */ 588 if (error == 0) 589 return (VM_MAXCPU); 590 else 591 return (1); 592 } 593 594 int 595 main(int argc, char *argv[]) 596 { 597 int c, error, gdb_port, inject_bkpt, tmp, err, ioapic, bvmcons; 598 int max_vcpus; 599 struct vmctx *ctx; 600 uint64_t rip; 601 size_t memsize; 602 603 bvmcons = 0; 604 inject_bkpt = 0; 605 progname = basename(argv[0]); 606 gdb_port = DEFAULT_GDB_PORT; 607 guest_ncpus = 1; 608 ioapic = 0; 609 memsize = 256 * MB; 610 611 while ((c = getopt(argc, argv, "abehABHIPxp:g:c:z:s:S:n:m:")) != -1) { 612 switch (c) { 613 case 'a': 614 disable_x2apic = 1; 615 break; 616 case 'A': 617 acpi = 1; 618 break; 619 case 'b': 620 bvmcons = 1; 621 break; 622 case 'B': 623 inject_bkpt = 1; 624 break; 625 case 'x': 626 guest_vcpu_mux = 1; 627 break; 628 case 'p': 629 pincpu = atoi(optarg); 630 break; 631 case 'c': 632 guest_ncpus = atoi(optarg); 633 break; 634 case 'g': 635 gdb_port = atoi(optarg); 636 break; 637 case 'z': 638 guest_hz = atoi(optarg); 639 break; 640 case 't': 641 guest_tslice = atoi(optarg); 642 break; 643 case 's': 644 if (pci_parse_slot(optarg, 0) != 0) 645 exit(1); 646 else 647 break; 648 case 'S': 649 if (pci_parse_slot(optarg, 1) != 0) 650 exit(1); 651 else 652 break; 653 case 'm': 654 memsize = strtoul(optarg, NULL, 0) * MB; 655 break; 656 case 'H': 657 guest_vmexit_on_hlt = 1; 658 break; 659 case 'I': 660 ioapic = 1; 661 break; 662 case 'P': 663 guest_vmexit_on_pause = 1; 664 break; 665 case 'e': 666 strictio = 1; 667 break; 668 case 'h': 669 usage(0); 670 default: 671 usage(1); 672 } 673 } 674 argc -= optind; 675 argv += optind; 676 677 if (argc != 1) 678 usage(1); 679 680 /* No need to mux if guest is uni-processor */ 681 if (guest_ncpus <= 1) 682 guest_vcpu_mux = 0; 683 684 /* vmexit on hlt if guest is muxed */ 685 if (guest_vcpu_mux) { 686 guest_vmexit_on_hlt = 1; 687 guest_vmexit_on_pause = 1; 688 } 689 690 vmname = argv[0]; 691 692 ctx = vm_open(vmname); 693 if (ctx == NULL) { 694 perror("vm_open"); 695 exit(1); 696 } 697 698 max_vcpus = num_vcpus_allowed(ctx); 699 if (guest_ncpus > max_vcpus) { 700 fprintf(stderr, "%d vCPUs requested but only %d available\n", 701 guest_ncpus, max_vcpus); 702 exit(1); 703 } 704 705 if (fbsdrun_vmexit_on_hlt()) { 706 err = vm_get_capability(ctx, BSP, VM_CAP_HALT_EXIT, &tmp); 707 if (err < 0) { 708 fprintf(stderr, "VM exit on HLT not supported\n"); 709 exit(1); 710 } 711 vm_set_capability(ctx, BSP, VM_CAP_HALT_EXIT, 1); 712 handler[VM_EXITCODE_HLT] = vmexit_hlt; 713 } 714 715 if (fbsdrun_vmexit_on_pause()) { 716 /* 717 * pause exit support required for this mode 718 */ 719 err = vm_get_capability(ctx, BSP, VM_CAP_PAUSE_EXIT, &tmp); 720 if (err < 0) { 721 fprintf(stderr, 722 "SMP mux requested, no pause support\n"); 723 exit(1); 724 } 725 vm_set_capability(ctx, BSP, VM_CAP_PAUSE_EXIT, 1); 726 handler[VM_EXITCODE_PAUSE] = vmexit_pause; 727 } 728 729 if (fbsdrun_disable_x2apic()) 730 err = vm_set_x2apic_state(ctx, BSP, X2APIC_DISABLED); 731 else 732 err = vm_set_x2apic_state(ctx, BSP, X2APIC_ENABLED); 733 734 if (err) { 735 fprintf(stderr, "Unable to set x2apic state (%d)\n", err); 736 exit(1); 737 } 738 739 err = vm_setup_memory(ctx, memsize, VM_MMAP_ALL); 740 if (err) { 741 fprintf(stderr, "Unable to setup memory (%d)\n", err); 742 exit(1); 743 } 744 745 init_mem(); 746 init_inout(); 747 748 rtc_init(ctx); 749 750 /* 751 * Exit if a device emulation finds an error in it's initilization 752 */ 753 if (init_pci(ctx) != 0) 754 exit(1); 755 756 if (ioapic) 757 ioapic_init(0); 758 759 if (gdb_port != 0) 760 init_dbgport(gdb_port); 761 762 if (bvmcons) 763 init_bvmcons(); 764 765 error = vm_get_register(ctx, BSP, VM_REG_GUEST_RIP, &rip); 766 assert(error == 0); 767 768 if (inject_bkpt) { 769 error = vm_inject_event(ctx, BSP, VM_HW_EXCEPTION, IDT_BP); 770 assert(error == 0); 771 } 772 773 /* 774 * build the guest tables, MP etc. 775 */ 776 mptable_build(ctx, guest_ncpus, ioapic); 777 778 if (acpi) { 779 error = acpi_build(ctx, guest_ncpus, ioapic); 780 assert(error == 0); 781 } 782 783 /* 784 * Add CPU 0 785 */ 786 fbsdrun_addcpu(ctx, BSP, rip); 787 788 /* 789 * Head off to the main event dispatch loop 790 */ 791 mevent_dispatch(); 792 793 exit(1); 794 } 795