1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2011 NetApp, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #include <sys/cdefs.h> 32 __FBSDID("$FreeBSD$"); 33 34 #include <sys/types.h> 35 #ifndef WITHOUT_CAPSICUM 36 #include <sys/capsicum.h> 37 #endif 38 #include <sys/mman.h> 39 #ifdef BHYVE_SNAPSHOT 40 #include <sys/socket.h> 41 #include <sys/stat.h> 42 #endif 43 #include <sys/time.h> 44 #ifdef BHYVE_SNAPSHOT 45 #include <sys/un.h> 46 #endif 47 48 #include <amd64/vmm/intel/vmcs.h> 49 #include <x86/apicreg.h> 50 51 #include <machine/atomic.h> 52 #include <machine/segments.h> 53 54 #ifndef WITHOUT_CAPSICUM 55 #include <capsicum_helpers.h> 56 #endif 57 #include <stdio.h> 58 #include <stdlib.h> 59 #include <string.h> 60 #include <err.h> 61 #include <errno.h> 62 #ifdef BHYVE_SNAPSHOT 63 #include <fcntl.h> 64 #endif 65 #include <libgen.h> 66 #include <unistd.h> 67 #include <assert.h> 68 #include <pthread.h> 69 #include <pthread_np.h> 70 #include <sysexits.h> 71 #include <stdbool.h> 72 #include <stdint.h> 73 #ifdef BHYVE_SNAPSHOT 74 #include <ucl.h> 75 #include <unistd.h> 76 77 #include <libxo/xo.h> 78 #endif 79 80 #include <machine/vmm.h> 81 #ifndef WITHOUT_CAPSICUM 82 #include <machine/vmm_dev.h> 83 #endif 84 #include <machine/vmm_instruction_emul.h> 85 #include <vmmapi.h> 86 87 #include "bhyverun.h" 88 #include "acpi.h" 89 #include "atkbdc.h" 90 #include "bootrom.h" 91 #include "config.h" 92 #include "inout.h" 93 #include "debug.h" 94 #include "fwctl.h" 95 #include "gdb.h" 96 #include "ioapic.h" 97 #include "kernemu_dev.h" 98 #include "mem.h" 99 #include "mevent.h" 100 #include "mptbl.h" 101 #include "pci_emul.h" 102 #include "pci_irq.h" 103 #include "pci_lpc.h" 104 #include "smbiostbl.h" 105 #ifdef BHYVE_SNAPSHOT 106 #include "snapshot.h" 107 #endif 108 #include "xmsr.h" 109 #include "spinup_ap.h" 110 #include "rtc.h" 111 #include "vmgenc.h" 112 113 #define GUEST_NIO_PORT 0x488 /* guest upcalls via i/o port */ 114 115 #define MB (1024UL * 1024) 116 #define GB (1024UL * MB) 117 118 static const char * const vmx_exit_reason_desc[] = { 119 [EXIT_REASON_EXCEPTION] = "Exception or non-maskable interrupt (NMI)", 120 [EXIT_REASON_EXT_INTR] = "External interrupt", 121 [EXIT_REASON_TRIPLE_FAULT] = "Triple fault", 122 [EXIT_REASON_INIT] = "INIT signal", 123 [EXIT_REASON_SIPI] = "Start-up IPI (SIPI)", 124 [EXIT_REASON_IO_SMI] = "I/O system-management interrupt (SMI)", 125 [EXIT_REASON_SMI] = "Other SMI", 126 [EXIT_REASON_INTR_WINDOW] = "Interrupt window", 127 [EXIT_REASON_NMI_WINDOW] = "NMI window", 128 [EXIT_REASON_TASK_SWITCH] = "Task switch", 129 [EXIT_REASON_CPUID] = "CPUID", 130 [EXIT_REASON_GETSEC] = "GETSEC", 131 [EXIT_REASON_HLT] = "HLT", 132 [EXIT_REASON_INVD] = "INVD", 133 [EXIT_REASON_INVLPG] = "INVLPG", 134 [EXIT_REASON_RDPMC] = "RDPMC", 135 [EXIT_REASON_RDTSC] = "RDTSC", 136 [EXIT_REASON_RSM] = "RSM", 137 [EXIT_REASON_VMCALL] = "VMCALL", 138 [EXIT_REASON_VMCLEAR] = "VMCLEAR", 139 [EXIT_REASON_VMLAUNCH] = "VMLAUNCH", 140 [EXIT_REASON_VMPTRLD] = "VMPTRLD", 141 [EXIT_REASON_VMPTRST] = "VMPTRST", 142 [EXIT_REASON_VMREAD] = "VMREAD", 143 [EXIT_REASON_VMRESUME] = "VMRESUME", 144 [EXIT_REASON_VMWRITE] = "VMWRITE", 145 [EXIT_REASON_VMXOFF] = "VMXOFF", 146 [EXIT_REASON_VMXON] = "VMXON", 147 [EXIT_REASON_CR_ACCESS] = "Control-register accesses", 148 [EXIT_REASON_DR_ACCESS] = "MOV DR", 149 [EXIT_REASON_INOUT] = "I/O instruction", 150 [EXIT_REASON_RDMSR] = "RDMSR", 151 [EXIT_REASON_WRMSR] = "WRMSR", 152 [EXIT_REASON_INVAL_VMCS] = 153 "VM-entry failure due to invalid guest state", 154 [EXIT_REASON_INVAL_MSR] = "VM-entry failure due to MSR loading", 155 [EXIT_REASON_MWAIT] = "MWAIT", 156 [EXIT_REASON_MTF] = "Monitor trap flag", 157 [EXIT_REASON_MONITOR] = "MONITOR", 158 [EXIT_REASON_PAUSE] = "PAUSE", 159 [EXIT_REASON_MCE_DURING_ENTRY] = 160 "VM-entry failure due to machine-check event", 161 [EXIT_REASON_TPR] = "TPR below threshold", 162 [EXIT_REASON_APIC_ACCESS] = "APIC access", 163 [EXIT_REASON_VIRTUALIZED_EOI] = "Virtualized EOI", 164 [EXIT_REASON_GDTR_IDTR] = "Access to GDTR or IDTR", 165 [EXIT_REASON_LDTR_TR] = "Access to LDTR or TR", 166 [EXIT_REASON_EPT_FAULT] = "EPT violation", 167 [EXIT_REASON_EPT_MISCONFIG] = "EPT misconfiguration", 168 [EXIT_REASON_INVEPT] = "INVEPT", 169 [EXIT_REASON_RDTSCP] = "RDTSCP", 170 [EXIT_REASON_VMX_PREEMPT] = "VMX-preemption timer expired", 171 [EXIT_REASON_INVVPID] = "INVVPID", 172 [EXIT_REASON_WBINVD] = "WBINVD", 173 [EXIT_REASON_XSETBV] = "XSETBV", 174 [EXIT_REASON_APIC_WRITE] = "APIC write", 175 [EXIT_REASON_RDRAND] = "RDRAND", 176 [EXIT_REASON_INVPCID] = "INVPCID", 177 [EXIT_REASON_VMFUNC] = "VMFUNC", 178 [EXIT_REASON_ENCLS] = "ENCLS", 179 [EXIT_REASON_RDSEED] = "RDSEED", 180 [EXIT_REASON_PM_LOG_FULL] = "Page-modification log full", 181 [EXIT_REASON_XSAVES] = "XSAVES", 182 [EXIT_REASON_XRSTORS] = "XRSTORS" 183 }; 184 185 typedef int (*vmexit_handler_t)(struct vmctx *, struct vm_exit *, int *vcpu); 186 187 int guest_ncpus; 188 uint16_t cpu_cores, cpu_sockets, cpu_threads; 189 190 int raw_stdio = 0; 191 192 static char *progname; 193 static const int BSP = 0; 194 195 static cpuset_t cpumask; 196 197 static void vm_loop(struct vmctx *ctx, int vcpu); 198 199 static struct bhyvestats { 200 uint64_t vmexit_bogus; 201 uint64_t vmexit_reqidle; 202 uint64_t vmexit_hlt; 203 uint64_t vmexit_pause; 204 uint64_t vmexit_mtrap; 205 uint64_t vmexit_inst_emul; 206 uint64_t cpu_switch_rotate; 207 uint64_t cpu_switch_direct; 208 } stats; 209 210 static struct mt_vmm_info { 211 pthread_t mt_thr; 212 struct vmctx *mt_ctx; 213 int mt_vcpu; 214 } *mt_vmm_info; 215 216 static cpuset_t **vcpumap; 217 218 static void 219 usage(int code) 220 { 221 222 fprintf(stderr, 223 "Usage: %s [-AaCDeHhPSuWwxY]\n" 224 " %*s [-c [[cpus=]numcpus][,sockets=n][,cores=n][,threads=n]]\n" 225 " %*s [-G port] [-k config_file] [-l lpc] [-m mem] [-o var=value]\n" 226 " %*s [-p vcpu:hostcpu] [-r file] [-s pci] [-U uuid] vmname\n" 227 " -A: create ACPI tables\n" 228 " -a: local apic is in xAPIC mode (deprecated)\n" 229 " -C: include guest memory in core file\n" 230 " -c: number of CPUs and/or topology specification\n" 231 " -D: destroy on power-off\n" 232 " -e: exit on unhandled I/O access\n" 233 " -G: start a debug server\n" 234 " -H: vmexit from the guest on HLT\n" 235 " -h: help\n" 236 " -k: key=value flat config file\n" 237 " -K: PS2 keyboard layout\n" 238 " -l: LPC device configuration\n" 239 " -m: memory size\n" 240 " -o: set config 'var' to 'value'\n" 241 " -P: vmexit from the guest on pause\n" 242 " -p: pin 'vcpu' to 'hostcpu'\n" 243 #ifdef BHYVE_SNAPSHOT 244 " -r: path to checkpoint file\n" 245 #endif 246 " -S: guest memory cannot be swapped\n" 247 " -s: <slot,driver,configinfo> PCI slot config\n" 248 " -U: UUID\n" 249 " -u: RTC keeps UTC time\n" 250 " -W: force virtio to use single-vector MSI\n" 251 " -w: ignore unimplemented MSRs\n" 252 " -x: local APIC is in x2APIC mode\n" 253 " -Y: disable MPtable generation\n", 254 progname, (int)strlen(progname), "", (int)strlen(progname), "", 255 (int)strlen(progname), ""); 256 257 exit(code); 258 } 259 260 /* 261 * XXX This parser is known to have the following issues: 262 * 1. It accepts null key=value tokens ",," as setting "cpus" to an 263 * empty string. 264 * 265 * The acceptance of a null specification ('-c ""') is by design to match the 266 * manual page syntax specification, this results in a topology of 1 vCPU. 267 */ 268 static int 269 topology_parse(const char *opt) 270 { 271 char *cp, *str, *tofree; 272 273 if (*opt == '\0') { 274 set_config_value("sockets", "1"); 275 set_config_value("cores", "1"); 276 set_config_value("threads", "1"); 277 set_config_value("cpus", "1"); 278 return (0); 279 } 280 281 tofree = str = strdup(opt); 282 if (str == NULL) 283 errx(4, "Failed to allocate memory"); 284 285 while ((cp = strsep(&str, ",")) != NULL) { 286 if (strncmp(cp, "cpus=", strlen("cpus=")) == 0) 287 set_config_value("cpus", cp + strlen("cpus=")); 288 else if (strncmp(cp, "sockets=", strlen("sockets=")) == 0) 289 set_config_value("sockets", cp + strlen("sockets=")); 290 else if (strncmp(cp, "cores=", strlen("cores=")) == 0) 291 set_config_value("cores", cp + strlen("cores=")); 292 else if (strncmp(cp, "threads=", strlen("threads=")) == 0) 293 set_config_value("threads", cp + strlen("threads=")); 294 #ifdef notyet /* Do not expose this until vmm.ko implements it */ 295 else if (strncmp(cp, "maxcpus=", strlen("maxcpus=")) == 0) 296 set_config_value("maxcpus", cp + strlen("maxcpus=")); 297 #endif 298 else if (strchr(cp, '=') != NULL) 299 goto out; 300 else 301 set_config_value("cpus", cp); 302 } 303 free(tofree); 304 return (0); 305 306 out: 307 free(tofree); 308 return (-1); 309 } 310 311 static int 312 parse_int_value(const char *key, const char *value, int minval, int maxval) 313 { 314 char *cp; 315 long lval; 316 317 errno = 0; 318 lval = strtol(value, &cp, 0); 319 if (errno != 0 || *cp != '\0' || cp == value || lval < minval || 320 lval > maxval) 321 errx(4, "Invalid value for %s: '%s'", key, value); 322 return (lval); 323 } 324 325 /* 326 * Set the sockets, cores, threads, and guest_cpus variables based on 327 * the configured topology. 328 * 329 * The limits of UINT16_MAX are due to the types passed to 330 * vm_set_topology(). vmm.ko may enforce tighter limits. 331 */ 332 static void 333 calc_topology(void) 334 { 335 const char *value; 336 bool explicit_cpus; 337 uint64_t ncpus; 338 339 value = get_config_value("cpus"); 340 if (value != NULL) { 341 guest_ncpus = parse_int_value("cpus", value, 1, UINT16_MAX); 342 explicit_cpus = true; 343 } else { 344 guest_ncpus = 1; 345 explicit_cpus = false; 346 } 347 value = get_config_value("cores"); 348 if (value != NULL) 349 cpu_cores = parse_int_value("cores", value, 1, UINT16_MAX); 350 else 351 cpu_cores = 1; 352 value = get_config_value("threads"); 353 if (value != NULL) 354 cpu_threads = parse_int_value("threads", value, 1, UINT16_MAX); 355 else 356 cpu_threads = 1; 357 value = get_config_value("sockets"); 358 if (value != NULL) 359 cpu_sockets = parse_int_value("sockets", value, 1, UINT16_MAX); 360 else 361 cpu_sockets = guest_ncpus; 362 363 /* 364 * Compute sockets * cores * threads avoiding overflow. The 365 * range check above insures these are 16 bit values. 366 */ 367 ncpus = (uint64_t)cpu_sockets * cpu_cores * cpu_threads; 368 if (ncpus > UINT16_MAX) 369 errx(4, "Computed number of vCPUs too high: %ju", 370 (uintmax_t)ncpus); 371 372 if (explicit_cpus) { 373 if (guest_ncpus != (int)ncpus) 374 errx(4, "Topology (%d sockets, %d cores, %d threads) " 375 "does not match %d vCPUs", 376 cpu_sockets, cpu_cores, cpu_threads, 377 guest_ncpus); 378 } else 379 guest_ncpus = ncpus; 380 } 381 382 static int 383 pincpu_parse(const char *opt) 384 { 385 const char *value; 386 char *newval; 387 char key[16]; 388 int vcpu, pcpu; 389 390 if (sscanf(opt, "%d:%d", &vcpu, &pcpu) != 2) { 391 fprintf(stderr, "invalid format: %s\n", opt); 392 return (-1); 393 } 394 395 if (vcpu < 0) { 396 fprintf(stderr, "invalid vcpu '%d'\n", vcpu); 397 return (-1); 398 } 399 400 if (pcpu < 0 || pcpu >= CPU_SETSIZE) { 401 fprintf(stderr, "hostcpu '%d' outside valid range from " 402 "0 to %d\n", pcpu, CPU_SETSIZE - 1); 403 return (-1); 404 } 405 406 snprintf(key, sizeof(key), "vcpu.%d.cpuset", vcpu); 407 value = get_config_value(key); 408 409 if (asprintf(&newval, "%s%s%d", value != NULL ? value : "", 410 value != NULL ? "," : "", pcpu) == -1) { 411 perror("failed to build new cpuset string"); 412 return (-1); 413 } 414 415 set_config_value(key, newval); 416 free(newval); 417 return (0); 418 } 419 420 static void 421 parse_cpuset(int vcpu, const char *list, cpuset_t *set) 422 { 423 char *cp, *token; 424 int pcpu, start; 425 426 CPU_ZERO(set); 427 start = -1; 428 token = __DECONST(char *, list); 429 for (;;) { 430 pcpu = strtoul(token, &cp, 0); 431 if (cp == token) 432 errx(4, "invalid cpuset for vcpu %d: '%s'", vcpu, list); 433 if (pcpu < 0 || pcpu >= CPU_SETSIZE) 434 errx(4, "hostcpu '%d' outside valid range from 0 to %d", 435 pcpu, CPU_SETSIZE - 1); 436 switch (*cp) { 437 case ',': 438 case '\0': 439 if (start >= 0) { 440 if (start > pcpu) 441 errx(4, "Invalid hostcpu range %d-%d", 442 start, pcpu); 443 while (start < pcpu) { 444 CPU_SET(start, set); 445 start++; 446 } 447 start = -1; 448 } 449 CPU_SET(pcpu, set); 450 break; 451 case '-': 452 if (start >= 0) 453 errx(4, "invalid cpuset for vcpu %d: '%s'", 454 vcpu, list); 455 start = pcpu; 456 break; 457 default: 458 errx(4, "invalid cpuset for vcpu %d: '%s'", vcpu, list); 459 } 460 if (*cp == '\0') 461 break; 462 token = cp + 1; 463 } 464 } 465 466 static void 467 build_vcpumaps(void) 468 { 469 char key[16]; 470 const char *value; 471 int vcpu; 472 473 vcpumap = calloc(guest_ncpus, sizeof(*vcpumap)); 474 for (vcpu = 0; vcpu < guest_ncpus; vcpu++) { 475 snprintf(key, sizeof(key), "vcpu.%d.cpuset", vcpu); 476 value = get_config_value(key); 477 if (value == NULL) 478 continue; 479 vcpumap[vcpu] = malloc(sizeof(cpuset_t)); 480 if (vcpumap[vcpu] == NULL) 481 err(4, "Failed to allocate cpuset for vcpu %d", vcpu); 482 parse_cpuset(vcpu, value, vcpumap[vcpu]); 483 } 484 } 485 486 void 487 vm_inject_fault(void *arg, int vcpu, int vector, int errcode_valid, 488 int errcode) 489 { 490 struct vmctx *ctx; 491 int error, restart_instruction; 492 493 ctx = arg; 494 restart_instruction = 1; 495 496 error = vm_inject_exception(ctx, vcpu, vector, errcode_valid, errcode, 497 restart_instruction); 498 assert(error == 0); 499 } 500 501 void * 502 paddr_guest2host(struct vmctx *ctx, uintptr_t gaddr, size_t len) 503 { 504 505 return (vm_map_gpa(ctx, gaddr, len)); 506 } 507 508 #ifdef BHYVE_SNAPSHOT 509 uintptr_t 510 paddr_host2guest(struct vmctx *ctx, void *addr) 511 { 512 return (vm_rev_map_gpa(ctx, addr)); 513 } 514 #endif 515 516 int 517 fbsdrun_virtio_msix(void) 518 { 519 520 return (get_config_bool_default("virtio_msix", true)); 521 } 522 523 static void * 524 fbsdrun_start_thread(void *param) 525 { 526 char tname[MAXCOMLEN + 1]; 527 struct mt_vmm_info *mtp; 528 int error, vcpu; 529 530 mtp = param; 531 vcpu = mtp->mt_vcpu; 532 533 snprintf(tname, sizeof(tname), "vcpu %d", vcpu); 534 pthread_set_name_np(mtp->mt_thr, tname); 535 536 if (vcpumap[vcpu] != NULL) { 537 error = pthread_setaffinity_np(mtp->mt_thr, sizeof(cpuset_t), 538 vcpumap[vcpu]); 539 assert(error == 0); 540 } 541 542 #ifdef BHYVE_SNAPSHOT 543 checkpoint_cpu_add(vcpu); 544 #endif 545 gdb_cpu_add(vcpu); 546 547 vm_loop(mtp->mt_ctx, vcpu); 548 549 /* not reached */ 550 exit(1); 551 return (NULL); 552 } 553 554 static void 555 fbsdrun_addcpu(struct vmctx *ctx, int newcpu) 556 { 557 int error; 558 559 error = vm_activate_cpu(ctx, newcpu); 560 if (error != 0) 561 err(EX_OSERR, "could not activate CPU %d", newcpu); 562 563 CPU_SET_ATOMIC(newcpu, &cpumask); 564 565 vm_suspend_cpu(ctx, newcpu); 566 567 mt_vmm_info[newcpu].mt_ctx = ctx; 568 mt_vmm_info[newcpu].mt_vcpu = newcpu; 569 570 error = pthread_create(&mt_vmm_info[newcpu].mt_thr, NULL, 571 fbsdrun_start_thread, &mt_vmm_info[newcpu]); 572 assert(error == 0); 573 } 574 575 static int 576 fbsdrun_deletecpu(int vcpu) 577 { 578 579 if (!CPU_ISSET(vcpu, &cpumask)) { 580 fprintf(stderr, "Attempting to delete unknown cpu %d\n", vcpu); 581 exit(4); 582 } 583 584 CPU_CLR_ATOMIC(vcpu, &cpumask); 585 return (CPU_EMPTY(&cpumask)); 586 } 587 588 static int 589 vmexit_handle_notify(struct vmctx *ctx __unused, struct vm_exit *vme __unused, 590 int *pvcpu __unused, uint32_t eax __unused) 591 { 592 #if BHYVE_DEBUG 593 /* 594 * put guest-driven debug here 595 */ 596 #endif 597 return (VMEXIT_CONTINUE); 598 } 599 600 static int 601 vmexit_inout(struct vmctx *ctx, struct vm_exit *vme, int *pvcpu) 602 { 603 int error; 604 int bytes, port, in, out; 605 int vcpu; 606 607 vcpu = *pvcpu; 608 609 port = vme->u.inout.port; 610 bytes = vme->u.inout.bytes; 611 in = vme->u.inout.in; 612 out = !in; 613 614 /* Extra-special case of host notifications */ 615 if (out && port == GUEST_NIO_PORT) { 616 error = vmexit_handle_notify(ctx, vme, pvcpu, vme->u.inout.eax); 617 return (error); 618 } 619 620 error = emulate_inout(ctx, vcpu, vme); 621 if (error) { 622 fprintf(stderr, "Unhandled %s%c 0x%04x at 0x%lx\n", 623 in ? "in" : "out", 624 bytes == 1 ? 'b' : (bytes == 2 ? 'w' : 'l'), 625 port, vme->rip); 626 return (VMEXIT_ABORT); 627 } else { 628 return (VMEXIT_CONTINUE); 629 } 630 } 631 632 static int 633 vmexit_rdmsr(struct vmctx *ctx, struct vm_exit *vme, int *pvcpu) 634 { 635 uint64_t val; 636 uint32_t eax, edx; 637 int error; 638 639 val = 0; 640 error = emulate_rdmsr(ctx, *pvcpu, vme->u.msr.code, &val); 641 if (error != 0) { 642 fprintf(stderr, "rdmsr to register %#x on vcpu %d\n", 643 vme->u.msr.code, *pvcpu); 644 if (get_config_bool("x86.strictmsr")) { 645 vm_inject_gp(ctx, *pvcpu); 646 return (VMEXIT_CONTINUE); 647 } 648 } 649 650 eax = val; 651 error = vm_set_register(ctx, *pvcpu, VM_REG_GUEST_RAX, eax); 652 assert(error == 0); 653 654 edx = val >> 32; 655 error = vm_set_register(ctx, *pvcpu, VM_REG_GUEST_RDX, edx); 656 assert(error == 0); 657 658 return (VMEXIT_CONTINUE); 659 } 660 661 static int 662 vmexit_wrmsr(struct vmctx *ctx, struct vm_exit *vme, int *pvcpu) 663 { 664 int error; 665 666 error = emulate_wrmsr(ctx, *pvcpu, vme->u.msr.code, vme->u.msr.wval); 667 if (error != 0) { 668 fprintf(stderr, "wrmsr to register %#x(%#lx) on vcpu %d\n", 669 vme->u.msr.code, vme->u.msr.wval, *pvcpu); 670 if (get_config_bool("x86.strictmsr")) { 671 vm_inject_gp(ctx, *pvcpu); 672 return (VMEXIT_CONTINUE); 673 } 674 } 675 return (VMEXIT_CONTINUE); 676 } 677 678 #define DEBUG_EPT_MISCONFIG 679 #ifdef DEBUG_EPT_MISCONFIG 680 #define VMCS_GUEST_PHYSICAL_ADDRESS 0x00002400 681 682 static uint64_t ept_misconfig_gpa, ept_misconfig_pte[4]; 683 static int ept_misconfig_ptenum; 684 #endif 685 686 static const char * 687 vmexit_vmx_desc(uint32_t exit_reason) 688 { 689 690 if (exit_reason >= nitems(vmx_exit_reason_desc) || 691 vmx_exit_reason_desc[exit_reason] == NULL) 692 return ("Unknown"); 693 return (vmx_exit_reason_desc[exit_reason]); 694 } 695 696 static int 697 vmexit_vmx(struct vmctx *ctx, struct vm_exit *vme, int *pvcpu) 698 { 699 700 fprintf(stderr, "vm exit[%d]\n", *pvcpu); 701 fprintf(stderr, "\treason\t\tVMX\n"); 702 fprintf(stderr, "\trip\t\t0x%016lx\n", vme->rip); 703 fprintf(stderr, "\tinst_length\t%d\n", vme->inst_length); 704 fprintf(stderr, "\tstatus\t\t%d\n", vme->u.vmx.status); 705 fprintf(stderr, "\texit_reason\t%u (%s)\n", vme->u.vmx.exit_reason, 706 vmexit_vmx_desc(vme->u.vmx.exit_reason)); 707 fprintf(stderr, "\tqualification\t0x%016lx\n", 708 vme->u.vmx.exit_qualification); 709 fprintf(stderr, "\tinst_type\t\t%d\n", vme->u.vmx.inst_type); 710 fprintf(stderr, "\tinst_error\t\t%d\n", vme->u.vmx.inst_error); 711 #ifdef DEBUG_EPT_MISCONFIG 712 if (vme->u.vmx.exit_reason == EXIT_REASON_EPT_MISCONFIG) { 713 vm_get_register(ctx, *pvcpu, 714 VMCS_IDENT(VMCS_GUEST_PHYSICAL_ADDRESS), 715 &ept_misconfig_gpa); 716 vm_get_gpa_pmap(ctx, ept_misconfig_gpa, ept_misconfig_pte, 717 &ept_misconfig_ptenum); 718 fprintf(stderr, "\tEPT misconfiguration:\n"); 719 fprintf(stderr, "\t\tGPA: %#lx\n", ept_misconfig_gpa); 720 fprintf(stderr, "\t\tPTE(%d): %#lx %#lx %#lx %#lx\n", 721 ept_misconfig_ptenum, ept_misconfig_pte[0], 722 ept_misconfig_pte[1], ept_misconfig_pte[2], 723 ept_misconfig_pte[3]); 724 } 725 #endif /* DEBUG_EPT_MISCONFIG */ 726 return (VMEXIT_ABORT); 727 } 728 729 static int 730 vmexit_svm(struct vmctx *ctx __unused, struct vm_exit *vme, int *pvcpu) 731 { 732 733 fprintf(stderr, "vm exit[%d]\n", *pvcpu); 734 fprintf(stderr, "\treason\t\tSVM\n"); 735 fprintf(stderr, "\trip\t\t0x%016lx\n", vme->rip); 736 fprintf(stderr, "\tinst_length\t%d\n", vme->inst_length); 737 fprintf(stderr, "\texitcode\t%#lx\n", vme->u.svm.exitcode); 738 fprintf(stderr, "\texitinfo1\t%#lx\n", vme->u.svm.exitinfo1); 739 fprintf(stderr, "\texitinfo2\t%#lx\n", vme->u.svm.exitinfo2); 740 return (VMEXIT_ABORT); 741 } 742 743 static int 744 vmexit_bogus(struct vmctx *ctx __unused, struct vm_exit *vme, 745 int *pvcpu __unused) 746 { 747 748 assert(vme->inst_length == 0); 749 750 stats.vmexit_bogus++; 751 752 return (VMEXIT_CONTINUE); 753 } 754 755 static int 756 vmexit_reqidle(struct vmctx *ctx __unused, struct vm_exit *vme, 757 int *pvcpu __unused) 758 { 759 760 assert(vme->inst_length == 0); 761 762 stats.vmexit_reqidle++; 763 764 return (VMEXIT_CONTINUE); 765 } 766 767 static int 768 vmexit_hlt(struct vmctx *ctx __unused, struct vm_exit *vme __unused, 769 int *pvcpu __unused) 770 { 771 772 stats.vmexit_hlt++; 773 774 /* 775 * Just continue execution with the next instruction. We use 776 * the HLT VM exit as a way to be friendly with the host 777 * scheduler. 778 */ 779 return (VMEXIT_CONTINUE); 780 } 781 782 static int 783 vmexit_pause(struct vmctx *ctx __unused, struct vm_exit *vme __unused, 784 int *pvcpu __unused) 785 { 786 787 stats.vmexit_pause++; 788 789 return (VMEXIT_CONTINUE); 790 } 791 792 static int 793 vmexit_mtrap(struct vmctx *ctx __unused, struct vm_exit *vme, int *pvcpu) 794 { 795 796 assert(vme->inst_length == 0); 797 798 stats.vmexit_mtrap++; 799 800 #ifdef BHYVE_SNAPSHOT 801 checkpoint_cpu_suspend(*pvcpu); 802 #endif 803 gdb_cpu_mtrap(*pvcpu); 804 #ifdef BHYVE_SNAPSHOT 805 checkpoint_cpu_resume(*pvcpu); 806 #endif 807 808 return (VMEXIT_CONTINUE); 809 } 810 811 static int 812 vmexit_inst_emul(struct vmctx *ctx, struct vm_exit *vme, int *pvcpu) 813 { 814 int err, i, cs_d; 815 struct vie *vie; 816 enum vm_cpu_mode mode; 817 818 stats.vmexit_inst_emul++; 819 820 vie = &vme->u.inst_emul.vie; 821 if (!vie->decoded) { 822 /* 823 * Attempt to decode in userspace as a fallback. This allows 824 * updating instruction decode in bhyve without rebooting the 825 * kernel (rapid prototyping), albeit with much slower 826 * emulation. 827 */ 828 vie_restart(vie); 829 mode = vme->u.inst_emul.paging.cpu_mode; 830 cs_d = vme->u.inst_emul.cs_d; 831 if (vmm_decode_instruction(mode, cs_d, vie) != 0) 832 goto fail; 833 if (vm_set_register(ctx, *pvcpu, VM_REG_GUEST_RIP, 834 vme->rip + vie->num_processed) != 0) 835 goto fail; 836 } 837 838 err = emulate_mem(ctx, *pvcpu, vme->u.inst_emul.gpa, 839 vie, &vme->u.inst_emul.paging); 840 if (err) { 841 if (err == ESRCH) { 842 EPRINTLN("Unhandled memory access to 0x%lx\n", 843 vme->u.inst_emul.gpa); 844 } 845 goto fail; 846 } 847 848 return (VMEXIT_CONTINUE); 849 850 fail: 851 fprintf(stderr, "Failed to emulate instruction sequence [ "); 852 for (i = 0; i < vie->num_valid; i++) 853 fprintf(stderr, "%02x", vie->inst[i]); 854 FPRINTLN(stderr, " ] at 0x%lx", vme->rip); 855 return (VMEXIT_ABORT); 856 } 857 858 static pthread_mutex_t resetcpu_mtx = PTHREAD_MUTEX_INITIALIZER; 859 static pthread_cond_t resetcpu_cond = PTHREAD_COND_INITIALIZER; 860 861 static int 862 vmexit_suspend(struct vmctx *ctx, struct vm_exit *vme, int *pvcpu) 863 { 864 enum vm_suspend_how how; 865 866 how = vme->u.suspended.how; 867 868 fbsdrun_deletecpu(*pvcpu); 869 870 if (*pvcpu != BSP) { 871 pthread_mutex_lock(&resetcpu_mtx); 872 pthread_cond_signal(&resetcpu_cond); 873 pthread_mutex_unlock(&resetcpu_mtx); 874 pthread_exit(NULL); 875 } 876 877 pthread_mutex_lock(&resetcpu_mtx); 878 while (!CPU_EMPTY(&cpumask)) { 879 pthread_cond_wait(&resetcpu_cond, &resetcpu_mtx); 880 } 881 pthread_mutex_unlock(&resetcpu_mtx); 882 883 switch (how) { 884 case VM_SUSPEND_RESET: 885 exit(0); 886 case VM_SUSPEND_POWEROFF: 887 if (get_config_bool_default("destroy_on_poweroff", false)) 888 vm_destroy(ctx); 889 exit(1); 890 case VM_SUSPEND_HALT: 891 exit(2); 892 case VM_SUSPEND_TRIPLEFAULT: 893 exit(3); 894 default: 895 fprintf(stderr, "vmexit_suspend: invalid reason %d\n", how); 896 exit(100); 897 } 898 return (0); /* NOTREACHED */ 899 } 900 901 static int 902 vmexit_debug(struct vmctx *ctx __unused, struct vm_exit *vme __unused, 903 int *pvcpu) 904 { 905 906 #ifdef BHYVE_SNAPSHOT 907 checkpoint_cpu_suspend(*pvcpu); 908 #endif 909 gdb_cpu_suspend(*pvcpu); 910 #ifdef BHYVE_SNAPSHOT 911 checkpoint_cpu_resume(*pvcpu); 912 #endif 913 return (VMEXIT_CONTINUE); 914 } 915 916 static int 917 vmexit_breakpoint(struct vmctx *ctx __unused, struct vm_exit *vme, int *pvcpu) 918 { 919 920 gdb_cpu_breakpoint(*pvcpu, vme); 921 return (VMEXIT_CONTINUE); 922 } 923 924 static int 925 vmexit_ipi(struct vmctx *ctx, struct vm_exit *vme, int *pvcpu __unused) 926 { 927 int error = -1; 928 int i; 929 switch (vme->u.ipi.mode) { 930 case APIC_DELMODE_INIT: 931 CPU_FOREACH_ISSET(i, &vme->u.ipi.dmask) { 932 error = vm_suspend_cpu(ctx, i); 933 if (error) { 934 warnx("%s: failed to suspend cpu %d\n", 935 __func__, i); 936 break; 937 } 938 } 939 break; 940 case APIC_DELMODE_STARTUP: 941 CPU_FOREACH_ISSET(i, &vme->u.ipi.dmask) { 942 spinup_ap(ctx, i, vme->u.ipi.vector << PAGE_SHIFT); 943 } 944 error = 0; 945 break; 946 default: 947 break; 948 } 949 950 return (error); 951 } 952 953 static vmexit_handler_t handler[VM_EXITCODE_MAX] = { 954 [VM_EXITCODE_INOUT] = vmexit_inout, 955 [VM_EXITCODE_INOUT_STR] = vmexit_inout, 956 [VM_EXITCODE_VMX] = vmexit_vmx, 957 [VM_EXITCODE_SVM] = vmexit_svm, 958 [VM_EXITCODE_BOGUS] = vmexit_bogus, 959 [VM_EXITCODE_REQIDLE] = vmexit_reqidle, 960 [VM_EXITCODE_RDMSR] = vmexit_rdmsr, 961 [VM_EXITCODE_WRMSR] = vmexit_wrmsr, 962 [VM_EXITCODE_MTRAP] = vmexit_mtrap, 963 [VM_EXITCODE_INST_EMUL] = vmexit_inst_emul, 964 [VM_EXITCODE_SUSPENDED] = vmexit_suspend, 965 [VM_EXITCODE_TASK_SWITCH] = vmexit_task_switch, 966 [VM_EXITCODE_DEBUG] = vmexit_debug, 967 [VM_EXITCODE_BPT] = vmexit_breakpoint, 968 [VM_EXITCODE_IPI] = vmexit_ipi, 969 }; 970 971 static void 972 vm_loop(struct vmctx *ctx, int vcpu) 973 { 974 struct vm_exit vme; 975 int error, rc; 976 enum vm_exitcode exitcode; 977 cpuset_t active_cpus; 978 979 error = vm_active_cpus(ctx, &active_cpus); 980 assert(CPU_ISSET(vcpu, &active_cpus)); 981 982 while (1) { 983 error = vm_run(ctx, vcpu, &vme); 984 if (error != 0) 985 break; 986 987 exitcode = vme.exitcode; 988 if (exitcode >= VM_EXITCODE_MAX || handler[exitcode] == NULL) { 989 fprintf(stderr, "vm_loop: unexpected exitcode 0x%x\n", 990 exitcode); 991 exit(4); 992 } 993 994 rc = (*handler[exitcode])(ctx, &vme, &vcpu); 995 996 switch (rc) { 997 case VMEXIT_CONTINUE: 998 break; 999 case VMEXIT_ABORT: 1000 abort(); 1001 default: 1002 exit(4); 1003 } 1004 } 1005 fprintf(stderr, "vm_run error %d, errno %d\n", error, errno); 1006 } 1007 1008 static int 1009 num_vcpus_allowed(struct vmctx *ctx) 1010 { 1011 uint16_t sockets, cores, threads, maxcpus; 1012 int tmp, error; 1013 1014 /* 1015 * The guest is allowed to spinup more than one processor only if the 1016 * UNRESTRICTED_GUEST capability is available. 1017 */ 1018 error = vm_get_capability(ctx, BSP, VM_CAP_UNRESTRICTED_GUEST, &tmp); 1019 if (error != 0) 1020 return (1); 1021 1022 error = vm_get_topology(ctx, &sockets, &cores, &threads, &maxcpus); 1023 if (error == 0) 1024 return (maxcpus); 1025 else 1026 return (1); 1027 } 1028 1029 static void 1030 fbsdrun_set_capabilities(struct vmctx *ctx, int cpu) 1031 { 1032 int err, tmp; 1033 1034 if (get_config_bool_default("x86.vmexit_on_hlt", false)) { 1035 err = vm_get_capability(ctx, cpu, VM_CAP_HALT_EXIT, &tmp); 1036 if (err < 0) { 1037 fprintf(stderr, "VM exit on HLT not supported\n"); 1038 exit(4); 1039 } 1040 vm_set_capability(ctx, cpu, VM_CAP_HALT_EXIT, 1); 1041 if (cpu == BSP) 1042 handler[VM_EXITCODE_HLT] = vmexit_hlt; 1043 } 1044 1045 if (get_config_bool_default("x86.vmexit_on_pause", false)) { 1046 /* 1047 * pause exit support required for this mode 1048 */ 1049 err = vm_get_capability(ctx, cpu, VM_CAP_PAUSE_EXIT, &tmp); 1050 if (err < 0) { 1051 fprintf(stderr, 1052 "SMP mux requested, no pause support\n"); 1053 exit(4); 1054 } 1055 vm_set_capability(ctx, cpu, VM_CAP_PAUSE_EXIT, 1); 1056 if (cpu == BSP) 1057 handler[VM_EXITCODE_PAUSE] = vmexit_pause; 1058 } 1059 1060 if (get_config_bool_default("x86.x2apic", false)) 1061 err = vm_set_x2apic_state(ctx, cpu, X2APIC_ENABLED); 1062 else 1063 err = vm_set_x2apic_state(ctx, cpu, X2APIC_DISABLED); 1064 1065 if (err) { 1066 fprintf(stderr, "Unable to set x2apic state (%d)\n", err); 1067 exit(4); 1068 } 1069 1070 vm_set_capability(ctx, cpu, VM_CAP_ENABLE_INVPCID, 1); 1071 1072 err = vm_set_capability(ctx, cpu, VM_CAP_IPI_EXIT, 1); 1073 assert(err == 0); 1074 } 1075 1076 static struct vmctx * 1077 do_open(const char *vmname) 1078 { 1079 struct vmctx *ctx; 1080 int error; 1081 bool reinit, romboot; 1082 1083 reinit = romboot = false; 1084 1085 if (lpc_bootrom()) 1086 romboot = true; 1087 1088 error = vm_create(vmname); 1089 if (error) { 1090 if (errno == EEXIST) { 1091 if (romboot) { 1092 reinit = true; 1093 } else { 1094 /* 1095 * The virtual machine has been setup by the 1096 * userspace bootloader. 1097 */ 1098 } 1099 } else { 1100 perror("vm_create"); 1101 exit(4); 1102 } 1103 } else { 1104 if (!romboot) { 1105 /* 1106 * If the virtual machine was just created then a 1107 * bootrom must be configured to boot it. 1108 */ 1109 fprintf(stderr, "virtual machine cannot be booted\n"); 1110 exit(4); 1111 } 1112 } 1113 1114 ctx = vm_open(vmname); 1115 if (ctx == NULL) { 1116 perror("vm_open"); 1117 exit(4); 1118 } 1119 1120 #ifndef WITHOUT_CAPSICUM 1121 if (vm_limit_rights(ctx) != 0) 1122 err(EX_OSERR, "vm_limit_rights"); 1123 #endif 1124 1125 if (reinit) { 1126 error = vm_reinit(ctx); 1127 if (error) { 1128 perror("vm_reinit"); 1129 exit(4); 1130 } 1131 } 1132 error = vm_set_topology(ctx, cpu_sockets, cpu_cores, cpu_threads, 1133 0 /* maxcpus, unimplemented */); 1134 if (error) 1135 errx(EX_OSERR, "vm_set_topology"); 1136 return (ctx); 1137 } 1138 1139 static void 1140 spinup_vcpu(struct vmctx *ctx, int vcpu) 1141 { 1142 int error; 1143 1144 if (vcpu != BSP) { 1145 fbsdrun_set_capabilities(ctx, vcpu); 1146 1147 /* 1148 * Enable the 'unrestricted guest' mode for APs. 1149 * 1150 * APs startup in power-on 16-bit mode. 1151 */ 1152 error = vm_set_capability(ctx, vcpu, VM_CAP_UNRESTRICTED_GUEST, 1); 1153 assert(error == 0); 1154 } 1155 1156 fbsdrun_addcpu(ctx, vcpu); 1157 } 1158 1159 static bool 1160 parse_config_option(const char *option) 1161 { 1162 const char *value; 1163 char *path; 1164 1165 value = strchr(option, '='); 1166 if (value == NULL || value[1] == '\0') 1167 return (false); 1168 path = strndup(option, value - option); 1169 if (path == NULL) 1170 err(4, "Failed to allocate memory"); 1171 set_config_value(path, value + 1); 1172 return (true); 1173 } 1174 1175 static void 1176 parse_simple_config_file(const char *path) 1177 { 1178 FILE *fp; 1179 char *line, *cp; 1180 size_t linecap; 1181 unsigned int lineno; 1182 1183 fp = fopen(path, "r"); 1184 if (fp == NULL) 1185 err(4, "Failed to open configuration file %s", path); 1186 line = NULL; 1187 linecap = 0; 1188 lineno = 1; 1189 for (lineno = 1; getline(&line, &linecap, fp) > 0; lineno++) { 1190 if (*line == '#' || *line == '\n') 1191 continue; 1192 cp = strchr(line, '\n'); 1193 if (cp != NULL) 1194 *cp = '\0'; 1195 if (!parse_config_option(line)) 1196 errx(4, "%s line %u: invalid config option '%s'", path, 1197 lineno, line); 1198 } 1199 free(line); 1200 fclose(fp); 1201 } 1202 1203 static void 1204 parse_gdb_options(const char *opt) 1205 { 1206 const char *sport; 1207 char *colon; 1208 1209 if (opt[0] == 'w') { 1210 set_config_bool("gdb.wait", true); 1211 opt++; 1212 } 1213 1214 colon = strrchr(opt, ':'); 1215 if (colon == NULL) { 1216 sport = opt; 1217 } else { 1218 *colon = '\0'; 1219 colon++; 1220 sport = colon; 1221 set_config_value("gdb.address", opt); 1222 } 1223 1224 set_config_value("gdb.port", sport); 1225 } 1226 1227 static void 1228 set_defaults(void) 1229 { 1230 1231 set_config_bool("acpi_tables", false); 1232 set_config_value("memory.size", "256M"); 1233 set_config_bool("x86.strictmsr", true); 1234 } 1235 1236 int 1237 main(int argc, char *argv[]) 1238 { 1239 int c, error; 1240 int max_vcpus, memflags; 1241 struct vmctx *ctx; 1242 uint64_t rip; 1243 size_t memsize; 1244 const char *optstr, *value, *vmname; 1245 #ifdef BHYVE_SNAPSHOT 1246 char *restore_file; 1247 struct restore_state rstate; 1248 1249 restore_file = NULL; 1250 #endif 1251 1252 init_config(); 1253 set_defaults(); 1254 progname = basename(argv[0]); 1255 1256 #ifdef BHYVE_SNAPSHOT 1257 optstr = "aehuwxACDHIPSWYk:o:p:G:c:s:m:l:K:U:r:"; 1258 #else 1259 optstr = "aehuwxACDHIPSWYk:o:p:G:c:s:m:l:K:U:"; 1260 #endif 1261 while ((c = getopt(argc, argv, optstr)) != -1) { 1262 switch (c) { 1263 case 'a': 1264 set_config_bool("x86.x2apic", false); 1265 break; 1266 case 'A': 1267 set_config_bool("acpi_tables", true); 1268 break; 1269 case 'D': 1270 set_config_bool("destroy_on_poweroff", true); 1271 break; 1272 case 'p': 1273 if (pincpu_parse(optarg) != 0) { 1274 errx(EX_USAGE, "invalid vcpu pinning " 1275 "configuration '%s'", optarg); 1276 } 1277 break; 1278 case 'c': 1279 if (topology_parse(optarg) != 0) { 1280 errx(EX_USAGE, "invalid cpu topology " 1281 "'%s'", optarg); 1282 } 1283 break; 1284 case 'C': 1285 set_config_bool("memory.guest_in_core", true); 1286 break; 1287 case 'G': 1288 parse_gdb_options(optarg); 1289 break; 1290 case 'k': 1291 parse_simple_config_file(optarg); 1292 break; 1293 case 'K': 1294 set_config_value("keyboard.layout", optarg); 1295 break; 1296 case 'l': 1297 if (strncmp(optarg, "help", strlen(optarg)) == 0) { 1298 lpc_print_supported_devices(); 1299 exit(0); 1300 } else if (lpc_device_parse(optarg) != 0) { 1301 errx(EX_USAGE, "invalid lpc device " 1302 "configuration '%s'", optarg); 1303 } 1304 break; 1305 #ifdef BHYVE_SNAPSHOT 1306 case 'r': 1307 restore_file = optarg; 1308 break; 1309 #endif 1310 case 's': 1311 if (strncmp(optarg, "help", strlen(optarg)) == 0) { 1312 pci_print_supported_devices(); 1313 exit(0); 1314 } else if (pci_parse_slot(optarg) != 0) 1315 exit(4); 1316 else 1317 break; 1318 case 'S': 1319 set_config_bool("memory.wired", true); 1320 break; 1321 case 'm': 1322 set_config_value("memory.size", optarg); 1323 break; 1324 case 'o': 1325 if (!parse_config_option(optarg)) 1326 errx(EX_USAGE, "invalid configuration option '%s'", optarg); 1327 break; 1328 case 'H': 1329 set_config_bool("x86.vmexit_on_hlt", true); 1330 break; 1331 case 'I': 1332 /* 1333 * The "-I" option was used to add an ioapic to the 1334 * virtual machine. 1335 * 1336 * An ioapic is now provided unconditionally for each 1337 * virtual machine and this option is now deprecated. 1338 */ 1339 break; 1340 case 'P': 1341 set_config_bool("x86.vmexit_on_pause", true); 1342 break; 1343 case 'e': 1344 set_config_bool("x86.strictio", true); 1345 break; 1346 case 'u': 1347 set_config_bool("rtc.use_localtime", false); 1348 break; 1349 case 'U': 1350 set_config_value("uuid", optarg); 1351 break; 1352 case 'w': 1353 set_config_bool("x86.strictmsr", false); 1354 break; 1355 case 'W': 1356 set_config_bool("virtio_msix", false); 1357 break; 1358 case 'x': 1359 set_config_bool("x86.x2apic", true); 1360 break; 1361 case 'Y': 1362 set_config_bool("x86.mptable", false); 1363 break; 1364 case 'h': 1365 usage(0); 1366 default: 1367 usage(1); 1368 } 1369 } 1370 argc -= optind; 1371 argv += optind; 1372 1373 if (argc > 1) 1374 usage(1); 1375 1376 #ifdef BHYVE_SNAPSHOT 1377 if (restore_file != NULL) { 1378 error = load_restore_file(restore_file, &rstate); 1379 if (error) { 1380 fprintf(stderr, "Failed to read checkpoint info from " 1381 "file: '%s'.\n", restore_file); 1382 exit(1); 1383 } 1384 vmname = lookup_vmname(&rstate); 1385 if (vmname != NULL) 1386 set_config_value("name", vmname); 1387 } 1388 #endif 1389 1390 if (argc == 1) 1391 set_config_value("name", argv[0]); 1392 1393 vmname = get_config_value("name"); 1394 if (vmname == NULL) 1395 usage(1); 1396 1397 if (get_config_bool_default("config.dump", false)) { 1398 dump_config(); 1399 exit(1); 1400 } 1401 1402 calc_topology(); 1403 build_vcpumaps(); 1404 1405 value = get_config_value("memory.size"); 1406 error = vm_parse_memsize(value, &memsize); 1407 if (error) 1408 errx(EX_USAGE, "invalid memsize '%s'", value); 1409 1410 ctx = do_open(vmname); 1411 1412 #ifdef BHYVE_SNAPSHOT 1413 if (restore_file != NULL) { 1414 guest_ncpus = lookup_guest_ncpus(&rstate); 1415 memflags = lookup_memflags(&rstate); 1416 memsize = lookup_memsize(&rstate); 1417 } 1418 1419 if (guest_ncpus < 1) { 1420 fprintf(stderr, "Invalid guest vCPUs (%d)\n", guest_ncpus); 1421 exit(1); 1422 } 1423 #endif 1424 1425 max_vcpus = num_vcpus_allowed(ctx); 1426 if (guest_ncpus > max_vcpus) { 1427 fprintf(stderr, "%d vCPUs requested but only %d available\n", 1428 guest_ncpus, max_vcpus); 1429 exit(4); 1430 } 1431 1432 fbsdrun_set_capabilities(ctx, BSP); 1433 1434 memflags = 0; 1435 if (get_config_bool_default("memory.wired", false)) 1436 memflags |= VM_MEM_F_WIRED; 1437 if (get_config_bool_default("memory.guest_in_core", false)) 1438 memflags |= VM_MEM_F_INCORE; 1439 vm_set_memflags(ctx, memflags); 1440 error = vm_setup_memory(ctx, memsize, VM_MMAP_ALL); 1441 if (error) { 1442 fprintf(stderr, "Unable to setup memory (%d)\n", errno); 1443 exit(4); 1444 } 1445 1446 error = init_msr(); 1447 if (error) { 1448 fprintf(stderr, "init_msr error %d", error); 1449 exit(4); 1450 } 1451 1452 init_mem(guest_ncpus); 1453 init_inout(); 1454 kernemu_dev_init(); 1455 init_bootrom(ctx); 1456 atkbdc_init(ctx); 1457 pci_irq_init(ctx); 1458 ioapic_init(ctx); 1459 1460 rtc_init(ctx); 1461 sci_init(ctx); 1462 1463 /* 1464 * Exit if a device emulation finds an error in its initilization 1465 */ 1466 if (init_pci(ctx) != 0) { 1467 perror("device emulation initialization error"); 1468 exit(4); 1469 } 1470 1471 /* 1472 * Initialize after PCI, to allow a bootrom file to reserve the high 1473 * region. 1474 */ 1475 if (get_config_bool("acpi_tables")) 1476 vmgenc_init(ctx); 1477 1478 init_gdb(ctx); 1479 1480 if (lpc_bootrom()) { 1481 if (vm_set_capability(ctx, BSP, VM_CAP_UNRESTRICTED_GUEST, 1)) { 1482 fprintf(stderr, "ROM boot failed: unrestricted guest " 1483 "capability not available\n"); 1484 exit(4); 1485 } 1486 error = vcpu_reset(ctx, BSP); 1487 assert(error == 0); 1488 } 1489 1490 /* Allocate per-VCPU resources. */ 1491 mt_vmm_info = calloc(guest_ncpus, sizeof(*mt_vmm_info)); 1492 1493 /* 1494 * Add all vCPUs. 1495 */ 1496 for (int vcpu = 0; vcpu < guest_ncpus; vcpu++) { 1497 spinup_vcpu(ctx, vcpu); 1498 } 1499 1500 #ifdef BHYVE_SNAPSHOT 1501 if (restore_file != NULL) { 1502 fprintf(stdout, "Pausing pci devs...\r\n"); 1503 if (vm_pause_user_devs() != 0) { 1504 fprintf(stderr, "Failed to pause PCI device state.\n"); 1505 exit(1); 1506 } 1507 1508 fprintf(stdout, "Restoring vm mem...\r\n"); 1509 if (restore_vm_mem(ctx, &rstate) != 0) { 1510 fprintf(stderr, "Failed to restore VM memory.\n"); 1511 exit(1); 1512 } 1513 1514 fprintf(stdout, "Restoring pci devs...\r\n"); 1515 if (vm_restore_user_devs(ctx, &rstate) != 0) { 1516 fprintf(stderr, "Failed to restore PCI device state.\n"); 1517 exit(1); 1518 } 1519 1520 fprintf(stdout, "Restoring kernel structs...\r\n"); 1521 if (vm_restore_kern_structs(ctx, &rstate) != 0) { 1522 fprintf(stderr, "Failed to restore kernel structs.\n"); 1523 exit(1); 1524 } 1525 1526 fprintf(stdout, "Resuming pci devs...\r\n"); 1527 if (vm_resume_user_devs() != 0) { 1528 fprintf(stderr, "Failed to resume PCI device state.\n"); 1529 exit(1); 1530 } 1531 } 1532 #endif 1533 1534 error = vm_get_register(ctx, BSP, VM_REG_GUEST_RIP, &rip); 1535 assert(error == 0); 1536 1537 /* 1538 * build the guest tables, MP etc. 1539 */ 1540 if (get_config_bool_default("x86.mptable", true)) { 1541 error = mptable_build(ctx, guest_ncpus); 1542 if (error) { 1543 perror("error to build the guest tables"); 1544 exit(4); 1545 } 1546 } 1547 1548 error = smbios_build(ctx); 1549 if (error != 0) 1550 exit(4); 1551 1552 if (get_config_bool("acpi_tables")) { 1553 error = acpi_build(ctx, guest_ncpus); 1554 assert(error == 0); 1555 } 1556 1557 if (lpc_bootrom()) 1558 fwctl_init(); 1559 1560 /* 1561 * Change the proc title to include the VM name. 1562 */ 1563 setproctitle("%s", vmname); 1564 1565 #ifndef WITHOUT_CAPSICUM 1566 caph_cache_catpages(); 1567 1568 if (caph_limit_stdout() == -1 || caph_limit_stderr() == -1) 1569 errx(EX_OSERR, "Unable to apply rights for sandbox"); 1570 1571 if (caph_enter() == -1) 1572 errx(EX_OSERR, "cap_enter() failed"); 1573 #endif 1574 1575 #ifdef BHYVE_SNAPSHOT 1576 /* initialize mutex/cond variables */ 1577 init_snapshot(); 1578 1579 /* 1580 * checkpointing thread for communication with bhyvectl 1581 */ 1582 if (init_checkpoint_thread(ctx) < 0) 1583 printf("Failed to start checkpoint thread!\r\n"); 1584 1585 if (restore_file != NULL) { 1586 destroy_restore_state(&rstate); 1587 vm_restore_time(ctx); 1588 1589 for (int i = 0; i < guest_ncpus; i++) { 1590 if (i == BSP) 1591 continue; 1592 vm_resume_cpu(ctx, i); 1593 } 1594 } 1595 #endif 1596 vm_resume_cpu(ctx, BSP); 1597 1598 /* 1599 * Head off to the main event dispatch loop 1600 */ 1601 mevent_dispatch(); 1602 1603 exit(4); 1604 } 1605