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/atomic.h> 37 #include <machine/segments.h> 38 39 #include <stdio.h> 40 #include <stdlib.h> 41 #include <string.h> 42 #include <err.h> 43 #include <libgen.h> 44 #include <unistd.h> 45 #include <assert.h> 46 #include <errno.h> 47 #include <pthread.h> 48 #include <pthread_np.h> 49 #include <sysexits.h> 50 51 #include <machine/vmm.h> 52 #include <vmmapi.h> 53 54 #include "bhyverun.h" 55 #include "acpi.h" 56 #include "inout.h" 57 #include "dbgport.h" 58 #include "ioapic.h" 59 #include "mem.h" 60 #include "mevent.h" 61 #include "mptbl.h" 62 #include "pci_emul.h" 63 #include "pci_irq.h" 64 #include "pci_lpc.h" 65 #include "smbiostbl.h" 66 #include "xmsr.h" 67 #include "spinup_ap.h" 68 #include "rtc.h" 69 70 #define GUEST_NIO_PORT 0x488 /* guest upcalls via i/o port */ 71 72 #define MB (1024UL * 1024) 73 #define GB (1024UL * MB) 74 75 typedef int (*vmexit_handler_t)(struct vmctx *, struct vm_exit *, int *vcpu); 76 extern int vmexit_task_switch(struct vmctx *, struct vm_exit *, int *vcpu); 77 78 char *vmname; 79 80 int guest_ncpus; 81 char *guest_uuid_str; 82 83 static int guest_vmexit_on_hlt, guest_vmexit_on_pause; 84 static int virtio_msix = 1; 85 static int x2apic_mode = 0; /* default is xAPIC */ 86 87 static int strictio; 88 static int strictmsr = 1; 89 90 static int acpi; 91 92 static char *progname; 93 static const int BSP = 0; 94 95 static cpuset_t cpumask; 96 97 static void vm_loop(struct vmctx *ctx, int vcpu, uint64_t rip); 98 99 static struct vm_exit vmexit[VM_MAXCPU]; 100 101 struct bhyvestats { 102 uint64_t vmexit_bogus; 103 uint64_t vmexit_bogus_switch; 104 uint64_t vmexit_hlt; 105 uint64_t vmexit_pause; 106 uint64_t vmexit_mtrap; 107 uint64_t vmexit_inst_emul; 108 uint64_t cpu_switch_rotate; 109 uint64_t cpu_switch_direct; 110 } stats; 111 112 struct mt_vmm_info { 113 pthread_t mt_thr; 114 struct vmctx *mt_ctx; 115 int mt_vcpu; 116 } mt_vmm_info[VM_MAXCPU]; 117 118 static cpuset_t *vcpumap[VM_MAXCPU] = { NULL }; 119 120 static void 121 usage(int code) 122 { 123 124 fprintf(stderr, 125 "Usage: %s [-abehwxACHPWY] [-c vcpus] [-g <gdb port>] [-l <lpc>]\n" 126 " %*s [-m mem] [-p vcpu:hostcpu] [-s <pci>] [-U uuid] <vm>\n" 127 " -a: local apic is in xAPIC mode (deprecated)\n" 128 " -A: create ACPI tables\n" 129 " -c: # cpus (default 1)\n" 130 " -C: include guest memory in core file\n" 131 " -e: exit on unhandled I/O access\n" 132 " -g: gdb port\n" 133 " -h: help\n" 134 " -H: vmexit from the guest on hlt\n" 135 " -l: LPC device configuration\n" 136 " -m: memory size in MB\n" 137 " -p: pin 'vcpu' to 'hostcpu'\n" 138 " -P: vmexit from the guest on pause\n" 139 " -s: <slot,driver,configinfo> PCI slot config\n" 140 " -U: uuid\n" 141 " -w: ignore unimplemented MSRs\n" 142 " -W: force virtio to use single-vector MSI\n" 143 " -x: local apic is in x2APIC mode\n" 144 " -Y: disable MPtable generation\n", 145 progname, (int)strlen(progname), ""); 146 147 exit(code); 148 } 149 150 static int 151 pincpu_parse(const char *opt) 152 { 153 int vcpu, pcpu; 154 155 if (sscanf(opt, "%d:%d", &vcpu, &pcpu) != 2) { 156 fprintf(stderr, "invalid format: %s\n", opt); 157 return (-1); 158 } 159 160 if (vcpu < 0 || vcpu >= VM_MAXCPU) { 161 fprintf(stderr, "vcpu '%d' outside valid range from 0 to %d\n", 162 vcpu, VM_MAXCPU - 1); 163 return (-1); 164 } 165 166 if (pcpu < 0 || pcpu >= CPU_SETSIZE) { 167 fprintf(stderr, "hostcpu '%d' outside valid range from " 168 "0 to %d\n", pcpu, CPU_SETSIZE - 1); 169 return (-1); 170 } 171 172 if (vcpumap[vcpu] == NULL) { 173 if ((vcpumap[vcpu] = malloc(sizeof(cpuset_t))) == NULL) { 174 perror("malloc"); 175 return (-1); 176 } 177 CPU_ZERO(vcpumap[vcpu]); 178 } 179 CPU_SET(pcpu, vcpumap[vcpu]); 180 return (0); 181 } 182 183 void 184 vm_inject_fault(void *arg, int vcpu, int vector, int errcode_valid, 185 int errcode) 186 { 187 struct vmctx *ctx; 188 int error; 189 190 ctx = arg; 191 if (errcode_valid) 192 error = vm_inject_exception2(ctx, vcpu, vector, errcode); 193 else 194 error = vm_inject_exception(ctx, vcpu, vector); 195 assert(error == 0); 196 197 /* 198 * Set the instruction length to 0 to ensure that the instruction is 199 * restarted when the fault handler returns. 200 */ 201 vmexit[vcpu].inst_length = 0; 202 } 203 204 void * 205 paddr_guest2host(struct vmctx *ctx, uintptr_t gaddr, size_t len) 206 { 207 208 return (vm_map_gpa(ctx, gaddr, len)); 209 } 210 211 int 212 fbsdrun_vmexit_on_pause(void) 213 { 214 215 return (guest_vmexit_on_pause); 216 } 217 218 int 219 fbsdrun_vmexit_on_hlt(void) 220 { 221 222 return (guest_vmexit_on_hlt); 223 } 224 225 int 226 fbsdrun_virtio_msix(void) 227 { 228 229 return (virtio_msix); 230 } 231 232 static void * 233 fbsdrun_start_thread(void *param) 234 { 235 char tname[MAXCOMLEN + 1]; 236 struct mt_vmm_info *mtp; 237 int vcpu; 238 239 mtp = param; 240 vcpu = mtp->mt_vcpu; 241 242 snprintf(tname, sizeof(tname), "vcpu %d", vcpu); 243 pthread_set_name_np(mtp->mt_thr, tname); 244 245 vm_loop(mtp->mt_ctx, vcpu, vmexit[vcpu].rip); 246 247 /* not reached */ 248 exit(1); 249 return (NULL); 250 } 251 252 void 253 fbsdrun_addcpu(struct vmctx *ctx, int fromcpu, int newcpu, uint64_t rip) 254 { 255 int error; 256 257 assert(fromcpu == BSP); 258 259 /* 260 * The 'newcpu' must be activated in the context of 'fromcpu'. If 261 * vm_activate_cpu() is delayed until newcpu's pthread starts running 262 * then vmm.ko is out-of-sync with bhyve and this can create a race 263 * with vm_suspend(). 264 */ 265 error = vm_activate_cpu(ctx, newcpu); 266 assert(error == 0); 267 268 CPU_SET_ATOMIC(newcpu, &cpumask); 269 270 /* 271 * Set up the vmexit struct to allow execution to start 272 * at the given RIP 273 */ 274 vmexit[newcpu].rip = rip; 275 vmexit[newcpu].inst_length = 0; 276 277 mt_vmm_info[newcpu].mt_ctx = ctx; 278 mt_vmm_info[newcpu].mt_vcpu = newcpu; 279 280 error = pthread_create(&mt_vmm_info[newcpu].mt_thr, NULL, 281 fbsdrun_start_thread, &mt_vmm_info[newcpu]); 282 assert(error == 0); 283 } 284 285 static int 286 fbsdrun_deletecpu(struct vmctx *ctx, int vcpu) 287 { 288 289 if (!CPU_ISSET(vcpu, &cpumask)) { 290 fprintf(stderr, "Attempting to delete unknown cpu %d\n", vcpu); 291 exit(1); 292 } 293 294 CPU_CLR_ATOMIC(vcpu, &cpumask); 295 return (CPU_EMPTY(&cpumask)); 296 } 297 298 static int 299 vmexit_handle_notify(struct vmctx *ctx, struct vm_exit *vme, int *pvcpu, 300 uint32_t eax) 301 { 302 #if BHYVE_DEBUG 303 /* 304 * put guest-driven debug here 305 */ 306 #endif 307 return (VMEXIT_CONTINUE); 308 } 309 310 static int 311 vmexit_inout(struct vmctx *ctx, struct vm_exit *vme, int *pvcpu) 312 { 313 int error; 314 int bytes, port, in, out, string; 315 int vcpu; 316 317 vcpu = *pvcpu; 318 319 port = vme->u.inout.port; 320 bytes = vme->u.inout.bytes; 321 string = vme->u.inout.string; 322 in = vme->u.inout.in; 323 out = !in; 324 325 /* Extra-special case of host notifications */ 326 if (out && port == GUEST_NIO_PORT) { 327 error = vmexit_handle_notify(ctx, vme, pvcpu, vme->u.inout.eax); 328 return (error); 329 } 330 331 error = emulate_inout(ctx, vcpu, vme, strictio); 332 if (!error && in && !string) { 333 error = vm_set_register(ctx, vcpu, VM_REG_GUEST_RAX, 334 vme->u.inout.eax); 335 assert(error == 0); 336 } 337 338 if (error) { 339 fprintf(stderr, "Unhandled %s%c 0x%04x\n", in ? "in" : "out", 340 bytes == 1 ? 'b' : (bytes == 2 ? 'w' : 'l'), port); 341 return (VMEXIT_ABORT); 342 } else { 343 return (VMEXIT_CONTINUE); 344 } 345 } 346 347 static int 348 vmexit_rdmsr(struct vmctx *ctx, struct vm_exit *vme, int *pvcpu) 349 { 350 uint64_t val; 351 uint32_t eax, edx; 352 int error; 353 354 val = 0; 355 error = emulate_rdmsr(ctx, *pvcpu, vme->u.msr.code, &val); 356 if (error != 0) { 357 fprintf(stderr, "rdmsr to register %#x on vcpu %d\n", 358 vme->u.msr.code, *pvcpu); 359 if (strictmsr) { 360 vm_inject_gp(ctx, *pvcpu); 361 return (VMEXIT_RESTART); 362 } 363 } 364 365 eax = val; 366 error = vm_set_register(ctx, *pvcpu, VM_REG_GUEST_RAX, eax); 367 assert(error == 0); 368 369 edx = val >> 32; 370 error = vm_set_register(ctx, *pvcpu, VM_REG_GUEST_RDX, edx); 371 assert(error == 0); 372 373 return (VMEXIT_CONTINUE); 374 } 375 376 static int 377 vmexit_wrmsr(struct vmctx *ctx, struct vm_exit *vme, int *pvcpu) 378 { 379 int error; 380 381 error = emulate_wrmsr(ctx, *pvcpu, vme->u.msr.code, vme->u.msr.wval); 382 if (error != 0) { 383 fprintf(stderr, "wrmsr to register %#x(%#lx) on vcpu %d\n", 384 vme->u.msr.code, vme->u.msr.wval, *pvcpu); 385 if (strictmsr) { 386 vm_inject_gp(ctx, *pvcpu); 387 return (VMEXIT_RESTART); 388 } 389 } 390 return (VMEXIT_CONTINUE); 391 } 392 393 static int 394 vmexit_spinup_ap(struct vmctx *ctx, struct vm_exit *vme, int *pvcpu) 395 { 396 int newcpu; 397 int retval = VMEXIT_CONTINUE; 398 399 newcpu = spinup_ap(ctx, *pvcpu, 400 vme->u.spinup_ap.vcpu, vme->u.spinup_ap.rip); 401 402 return (retval); 403 } 404 405 #define DEBUG_EPT_MISCONFIG 406 #ifdef DEBUG_EPT_MISCONFIG 407 #define EXIT_REASON_EPT_MISCONFIG 49 408 #define VMCS_GUEST_PHYSICAL_ADDRESS 0x00002400 409 #define VMCS_IDENT(x) ((x) | 0x80000000) 410 411 static uint64_t ept_misconfig_gpa, ept_misconfig_pte[4]; 412 static int ept_misconfig_ptenum; 413 #endif 414 415 static int 416 vmexit_vmx(struct vmctx *ctx, struct vm_exit *vmexit, int *pvcpu) 417 { 418 419 fprintf(stderr, "vm exit[%d]\n", *pvcpu); 420 fprintf(stderr, "\treason\t\tVMX\n"); 421 fprintf(stderr, "\trip\t\t0x%016lx\n", vmexit->rip); 422 fprintf(stderr, "\tinst_length\t%d\n", vmexit->inst_length); 423 fprintf(stderr, "\tstatus\t\t%d\n", vmexit->u.vmx.status); 424 fprintf(stderr, "\texit_reason\t%u\n", vmexit->u.vmx.exit_reason); 425 fprintf(stderr, "\tqualification\t0x%016lx\n", 426 vmexit->u.vmx.exit_qualification); 427 fprintf(stderr, "\tinst_type\t\t%d\n", vmexit->u.vmx.inst_type); 428 fprintf(stderr, "\tinst_error\t\t%d\n", vmexit->u.vmx.inst_error); 429 #ifdef DEBUG_EPT_MISCONFIG 430 if (vmexit->u.vmx.exit_reason == EXIT_REASON_EPT_MISCONFIG) { 431 vm_get_register(ctx, *pvcpu, 432 VMCS_IDENT(VMCS_GUEST_PHYSICAL_ADDRESS), 433 &ept_misconfig_gpa); 434 vm_get_gpa_pmap(ctx, ept_misconfig_gpa, ept_misconfig_pte, 435 &ept_misconfig_ptenum); 436 fprintf(stderr, "\tEPT misconfiguration:\n"); 437 fprintf(stderr, "\t\tGPA: %#lx\n", ept_misconfig_gpa); 438 fprintf(stderr, "\t\tPTE(%d): %#lx %#lx %#lx %#lx\n", 439 ept_misconfig_ptenum, ept_misconfig_pte[0], 440 ept_misconfig_pte[1], ept_misconfig_pte[2], 441 ept_misconfig_pte[3]); 442 } 443 #endif /* DEBUG_EPT_MISCONFIG */ 444 return (VMEXIT_ABORT); 445 } 446 447 static int 448 vmexit_bogus(struct vmctx *ctx, struct vm_exit *vmexit, int *pvcpu) 449 { 450 451 stats.vmexit_bogus++; 452 453 return (VMEXIT_RESTART); 454 } 455 456 static int 457 vmexit_hlt(struct vmctx *ctx, struct vm_exit *vmexit, int *pvcpu) 458 { 459 460 stats.vmexit_hlt++; 461 462 /* 463 * Just continue execution with the next instruction. We use 464 * the HLT VM exit as a way to be friendly with the host 465 * scheduler. 466 */ 467 return (VMEXIT_CONTINUE); 468 } 469 470 static int 471 vmexit_pause(struct vmctx *ctx, struct vm_exit *vmexit, int *pvcpu) 472 { 473 474 stats.vmexit_pause++; 475 476 return (VMEXIT_CONTINUE); 477 } 478 479 static int 480 vmexit_mtrap(struct vmctx *ctx, struct vm_exit *vmexit, int *pvcpu) 481 { 482 483 stats.vmexit_mtrap++; 484 485 return (VMEXIT_RESTART); 486 } 487 488 static int 489 vmexit_inst_emul(struct vmctx *ctx, struct vm_exit *vmexit, int *pvcpu) 490 { 491 int err; 492 stats.vmexit_inst_emul++; 493 494 err = emulate_mem(ctx, *pvcpu, vmexit->u.inst_emul.gpa, 495 &vmexit->u.inst_emul.vie, &vmexit->u.inst_emul.paging); 496 497 if (err) { 498 if (err == EINVAL) { 499 fprintf(stderr, 500 "Failed to emulate instruction at 0x%lx\n", 501 vmexit->rip); 502 } else if (err == ESRCH) { 503 fprintf(stderr, "Unhandled memory access to 0x%lx\n", 504 vmexit->u.inst_emul.gpa); 505 } 506 507 return (VMEXIT_ABORT); 508 } 509 510 return (VMEXIT_CONTINUE); 511 } 512 513 static pthread_mutex_t resetcpu_mtx = PTHREAD_MUTEX_INITIALIZER; 514 static pthread_cond_t resetcpu_cond = PTHREAD_COND_INITIALIZER; 515 516 static int 517 vmexit_suspend(struct vmctx *ctx, struct vm_exit *vmexit, int *pvcpu) 518 { 519 enum vm_suspend_how how; 520 521 how = vmexit->u.suspended.how; 522 523 fbsdrun_deletecpu(ctx, *pvcpu); 524 525 if (*pvcpu != BSP) { 526 pthread_mutex_lock(&resetcpu_mtx); 527 pthread_cond_signal(&resetcpu_cond); 528 pthread_mutex_unlock(&resetcpu_mtx); 529 pthread_exit(NULL); 530 } 531 532 pthread_mutex_lock(&resetcpu_mtx); 533 while (!CPU_EMPTY(&cpumask)) { 534 pthread_cond_wait(&resetcpu_cond, &resetcpu_mtx); 535 } 536 pthread_mutex_unlock(&resetcpu_mtx); 537 538 switch (how) { 539 case VM_SUSPEND_RESET: 540 exit(0); 541 case VM_SUSPEND_POWEROFF: 542 exit(1); 543 case VM_SUSPEND_HALT: 544 exit(2); 545 case VM_SUSPEND_TRIPLEFAULT: 546 exit(3); 547 default: 548 fprintf(stderr, "vmexit_suspend: invalid reason %d\n", how); 549 exit(100); 550 } 551 return (0); /* NOTREACHED */ 552 } 553 554 static vmexit_handler_t handler[VM_EXITCODE_MAX] = { 555 [VM_EXITCODE_INOUT] = vmexit_inout, 556 [VM_EXITCODE_INOUT_STR] = vmexit_inout, 557 [VM_EXITCODE_VMX] = vmexit_vmx, 558 [VM_EXITCODE_BOGUS] = vmexit_bogus, 559 [VM_EXITCODE_RDMSR] = vmexit_rdmsr, 560 [VM_EXITCODE_WRMSR] = vmexit_wrmsr, 561 [VM_EXITCODE_MTRAP] = vmexit_mtrap, 562 [VM_EXITCODE_INST_EMUL] = vmexit_inst_emul, 563 [VM_EXITCODE_SPINUP_AP] = vmexit_spinup_ap, 564 [VM_EXITCODE_SUSPENDED] = vmexit_suspend, 565 [VM_EXITCODE_TASK_SWITCH] = vmexit_task_switch, 566 }; 567 568 static void 569 vm_loop(struct vmctx *ctx, int vcpu, uint64_t rip) 570 { 571 int error, rc, prevcpu; 572 enum vm_exitcode exitcode; 573 cpuset_t active_cpus; 574 575 if (vcpumap[vcpu] != NULL) { 576 error = pthread_setaffinity_np(pthread_self(), 577 sizeof(cpuset_t), vcpumap[vcpu]); 578 assert(error == 0); 579 } 580 581 error = vm_active_cpus(ctx, &active_cpus); 582 assert(CPU_ISSET(vcpu, &active_cpus)); 583 584 while (1) { 585 error = vm_run(ctx, vcpu, rip, &vmexit[vcpu]); 586 if (error != 0) 587 break; 588 589 prevcpu = vcpu; 590 591 exitcode = vmexit[vcpu].exitcode; 592 if (exitcode >= VM_EXITCODE_MAX || handler[exitcode] == NULL) { 593 fprintf(stderr, "vm_loop: unexpected exitcode 0x%x\n", 594 exitcode); 595 exit(1); 596 } 597 598 rc = (*handler[exitcode])(ctx, &vmexit[vcpu], &vcpu); 599 600 switch (rc) { 601 case VMEXIT_CONTINUE: 602 rip = vmexit[vcpu].rip + vmexit[vcpu].inst_length; 603 break; 604 case VMEXIT_RESTART: 605 rip = vmexit[vcpu].rip; 606 break; 607 case VMEXIT_ABORT: 608 abort(); 609 default: 610 exit(1); 611 } 612 } 613 fprintf(stderr, "vm_run error %d, errno %d\n", error, errno); 614 } 615 616 static int 617 num_vcpus_allowed(struct vmctx *ctx) 618 { 619 int tmp, error; 620 621 error = vm_get_capability(ctx, BSP, VM_CAP_UNRESTRICTED_GUEST, &tmp); 622 623 /* 624 * The guest is allowed to spinup more than one processor only if the 625 * UNRESTRICTED_GUEST capability is available. 626 */ 627 if (error == 0) 628 return (VM_MAXCPU); 629 else 630 return (1); 631 } 632 633 void 634 fbsdrun_set_capabilities(struct vmctx *ctx, int cpu) 635 { 636 int err, tmp; 637 638 if (fbsdrun_vmexit_on_hlt()) { 639 err = vm_get_capability(ctx, cpu, VM_CAP_HALT_EXIT, &tmp); 640 if (err < 0) { 641 fprintf(stderr, "VM exit on HLT not supported\n"); 642 exit(1); 643 } 644 vm_set_capability(ctx, cpu, VM_CAP_HALT_EXIT, 1); 645 if (cpu == BSP) 646 handler[VM_EXITCODE_HLT] = vmexit_hlt; 647 } 648 649 if (fbsdrun_vmexit_on_pause()) { 650 /* 651 * pause exit support required for this mode 652 */ 653 err = vm_get_capability(ctx, cpu, VM_CAP_PAUSE_EXIT, &tmp); 654 if (err < 0) { 655 fprintf(stderr, 656 "SMP mux requested, no pause support\n"); 657 exit(1); 658 } 659 vm_set_capability(ctx, cpu, VM_CAP_PAUSE_EXIT, 1); 660 if (cpu == BSP) 661 handler[VM_EXITCODE_PAUSE] = vmexit_pause; 662 } 663 664 if (x2apic_mode) 665 err = vm_set_x2apic_state(ctx, cpu, X2APIC_ENABLED); 666 else 667 err = vm_set_x2apic_state(ctx, cpu, X2APIC_DISABLED); 668 669 if (err) { 670 fprintf(stderr, "Unable to set x2apic state (%d)\n", err); 671 exit(1); 672 } 673 674 vm_set_capability(ctx, cpu, VM_CAP_ENABLE_INVPCID, 1); 675 } 676 677 int 678 main(int argc, char *argv[]) 679 { 680 int c, error, gdb_port, err, bvmcons; 681 int dump_guest_memory, max_vcpus, mptgen; 682 struct vmctx *ctx; 683 uint64_t rip; 684 size_t memsize; 685 686 bvmcons = 0; 687 dump_guest_memory = 0; 688 progname = basename(argv[0]); 689 gdb_port = 0; 690 guest_ncpus = 1; 691 memsize = 256 * MB; 692 mptgen = 1; 693 694 while ((c = getopt(argc, argv, "abehwxACHIPWYp:g:c:s:m:l:U:")) != -1) { 695 switch (c) { 696 case 'a': 697 x2apic_mode = 0; 698 break; 699 case 'A': 700 acpi = 1; 701 break; 702 case 'b': 703 bvmcons = 1; 704 break; 705 case 'p': 706 if (pincpu_parse(optarg) != 0) { 707 errx(EX_USAGE, "invalid vcpu pinning " 708 "configuration '%s'", optarg); 709 } 710 break; 711 case 'c': 712 guest_ncpus = atoi(optarg); 713 break; 714 case 'C': 715 dump_guest_memory = 1; 716 break; 717 case 'g': 718 gdb_port = atoi(optarg); 719 break; 720 case 'l': 721 if (lpc_device_parse(optarg) != 0) { 722 errx(EX_USAGE, "invalid lpc device " 723 "configuration '%s'", optarg); 724 } 725 break; 726 case 's': 727 if (pci_parse_slot(optarg) != 0) 728 exit(1); 729 else 730 break; 731 case 'm': 732 error = vm_parse_memsize(optarg, &memsize); 733 if (error) 734 errx(EX_USAGE, "invalid memsize '%s'", optarg); 735 break; 736 case 'H': 737 guest_vmexit_on_hlt = 1; 738 break; 739 case 'I': 740 /* 741 * The "-I" option was used to add an ioapic to the 742 * virtual machine. 743 * 744 * An ioapic is now provided unconditionally for each 745 * virtual machine and this option is now deprecated. 746 */ 747 break; 748 case 'P': 749 guest_vmexit_on_pause = 1; 750 break; 751 case 'e': 752 strictio = 1; 753 break; 754 case 'U': 755 guest_uuid_str = optarg; 756 break; 757 case 'w': 758 strictmsr = 0; 759 break; 760 case 'W': 761 virtio_msix = 0; 762 break; 763 case 'x': 764 x2apic_mode = 1; 765 break; 766 case 'Y': 767 mptgen = 0; 768 break; 769 case 'h': 770 usage(0); 771 default: 772 usage(1); 773 } 774 } 775 argc -= optind; 776 argv += optind; 777 778 if (argc != 1) 779 usage(1); 780 781 vmname = argv[0]; 782 783 ctx = vm_open(vmname); 784 if (ctx == NULL) { 785 perror("vm_open"); 786 exit(1); 787 } 788 789 max_vcpus = num_vcpus_allowed(ctx); 790 if (guest_ncpus > max_vcpus) { 791 fprintf(stderr, "%d vCPUs requested but only %d available\n", 792 guest_ncpus, max_vcpus); 793 exit(1); 794 } 795 796 fbsdrun_set_capabilities(ctx, BSP); 797 798 if (dump_guest_memory) 799 vm_set_memflags(ctx, VM_MEM_F_INCORE); 800 err = vm_setup_memory(ctx, memsize, VM_MMAP_ALL); 801 if (err) { 802 fprintf(stderr, "Unable to setup memory (%d)\n", err); 803 exit(1); 804 } 805 806 init_mem(); 807 init_inout(); 808 pci_irq_init(ctx); 809 ioapic_init(ctx); 810 811 rtc_init(ctx); 812 sci_init(ctx); 813 814 /* 815 * Exit if a device emulation finds an error in it's initilization 816 */ 817 if (init_pci(ctx) != 0) 818 exit(1); 819 820 if (gdb_port != 0) 821 init_dbgport(gdb_port); 822 823 if (bvmcons) 824 init_bvmcons(); 825 826 error = vm_get_register(ctx, BSP, VM_REG_GUEST_RIP, &rip); 827 assert(error == 0); 828 829 /* 830 * build the guest tables, MP etc. 831 */ 832 if (mptgen) { 833 error = mptable_build(ctx, guest_ncpus); 834 if (error) 835 exit(1); 836 } 837 838 error = smbios_build(ctx); 839 assert(error == 0); 840 841 if (acpi) { 842 error = acpi_build(ctx, guest_ncpus); 843 assert(error == 0); 844 } 845 846 /* 847 * Change the proc title to include the VM name. 848 */ 849 setproctitle("%s", vmname); 850 851 /* 852 * Add CPU 0 853 */ 854 fbsdrun_addcpu(ctx, BSP, BSP, rip); 855 856 /* 857 * Head off to the main event dispatch loop 858 */ 859 mevent_dispatch(); 860 861 exit(1); 862 } 863