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 "qemu_fwcfg.h" 105 #include "smbiostbl.h" 106 #ifdef BHYVE_SNAPSHOT 107 #include "snapshot.h" 108 #endif 109 #include "xmsr.h" 110 #include "spinup_ap.h" 111 #include "rtc.h" 112 #include "vmgenc.h" 113 114 #define GUEST_NIO_PORT 0x488 /* guest upcalls via i/o port */ 115 116 #define MB (1024UL * 1024) 117 #define GB (1024UL * MB) 118 119 static const char * const vmx_exit_reason_desc[] = { 120 [EXIT_REASON_EXCEPTION] = "Exception or non-maskable interrupt (NMI)", 121 [EXIT_REASON_EXT_INTR] = "External interrupt", 122 [EXIT_REASON_TRIPLE_FAULT] = "Triple fault", 123 [EXIT_REASON_INIT] = "INIT signal", 124 [EXIT_REASON_SIPI] = "Start-up IPI (SIPI)", 125 [EXIT_REASON_IO_SMI] = "I/O system-management interrupt (SMI)", 126 [EXIT_REASON_SMI] = "Other SMI", 127 [EXIT_REASON_INTR_WINDOW] = "Interrupt window", 128 [EXIT_REASON_NMI_WINDOW] = "NMI window", 129 [EXIT_REASON_TASK_SWITCH] = "Task switch", 130 [EXIT_REASON_CPUID] = "CPUID", 131 [EXIT_REASON_GETSEC] = "GETSEC", 132 [EXIT_REASON_HLT] = "HLT", 133 [EXIT_REASON_INVD] = "INVD", 134 [EXIT_REASON_INVLPG] = "INVLPG", 135 [EXIT_REASON_RDPMC] = "RDPMC", 136 [EXIT_REASON_RDTSC] = "RDTSC", 137 [EXIT_REASON_RSM] = "RSM", 138 [EXIT_REASON_VMCALL] = "VMCALL", 139 [EXIT_REASON_VMCLEAR] = "VMCLEAR", 140 [EXIT_REASON_VMLAUNCH] = "VMLAUNCH", 141 [EXIT_REASON_VMPTRLD] = "VMPTRLD", 142 [EXIT_REASON_VMPTRST] = "VMPTRST", 143 [EXIT_REASON_VMREAD] = "VMREAD", 144 [EXIT_REASON_VMRESUME] = "VMRESUME", 145 [EXIT_REASON_VMWRITE] = "VMWRITE", 146 [EXIT_REASON_VMXOFF] = "VMXOFF", 147 [EXIT_REASON_VMXON] = "VMXON", 148 [EXIT_REASON_CR_ACCESS] = "Control-register accesses", 149 [EXIT_REASON_DR_ACCESS] = "MOV DR", 150 [EXIT_REASON_INOUT] = "I/O instruction", 151 [EXIT_REASON_RDMSR] = "RDMSR", 152 [EXIT_REASON_WRMSR] = "WRMSR", 153 [EXIT_REASON_INVAL_VMCS] = 154 "VM-entry failure due to invalid guest state", 155 [EXIT_REASON_INVAL_MSR] = "VM-entry failure due to MSR loading", 156 [EXIT_REASON_MWAIT] = "MWAIT", 157 [EXIT_REASON_MTF] = "Monitor trap flag", 158 [EXIT_REASON_MONITOR] = "MONITOR", 159 [EXIT_REASON_PAUSE] = "PAUSE", 160 [EXIT_REASON_MCE_DURING_ENTRY] = 161 "VM-entry failure due to machine-check event", 162 [EXIT_REASON_TPR] = "TPR below threshold", 163 [EXIT_REASON_APIC_ACCESS] = "APIC access", 164 [EXIT_REASON_VIRTUALIZED_EOI] = "Virtualized EOI", 165 [EXIT_REASON_GDTR_IDTR] = "Access to GDTR or IDTR", 166 [EXIT_REASON_LDTR_TR] = "Access to LDTR or TR", 167 [EXIT_REASON_EPT_FAULT] = "EPT violation", 168 [EXIT_REASON_EPT_MISCONFIG] = "EPT misconfiguration", 169 [EXIT_REASON_INVEPT] = "INVEPT", 170 [EXIT_REASON_RDTSCP] = "RDTSCP", 171 [EXIT_REASON_VMX_PREEMPT] = "VMX-preemption timer expired", 172 [EXIT_REASON_INVVPID] = "INVVPID", 173 [EXIT_REASON_WBINVD] = "WBINVD", 174 [EXIT_REASON_XSETBV] = "XSETBV", 175 [EXIT_REASON_APIC_WRITE] = "APIC write", 176 [EXIT_REASON_RDRAND] = "RDRAND", 177 [EXIT_REASON_INVPCID] = "INVPCID", 178 [EXIT_REASON_VMFUNC] = "VMFUNC", 179 [EXIT_REASON_ENCLS] = "ENCLS", 180 [EXIT_REASON_RDSEED] = "RDSEED", 181 [EXIT_REASON_PM_LOG_FULL] = "Page-modification log full", 182 [EXIT_REASON_XSAVES] = "XSAVES", 183 [EXIT_REASON_XRSTORS] = "XRSTORS" 184 }; 185 186 typedef int (*vmexit_handler_t)(struct vmctx *, struct vcpu *, struct vm_exit *); 187 188 int guest_ncpus; 189 uint16_t cpu_cores, cpu_sockets, cpu_threads; 190 191 int raw_stdio = 0; 192 193 static char *progname; 194 static const int BSP = 0; 195 196 static cpuset_t cpumask; 197 198 static void vm_loop(struct vmctx *ctx, struct vcpu *vcpu); 199 200 static struct bhyvestats { 201 uint64_t vmexit_bogus; 202 uint64_t vmexit_reqidle; 203 uint64_t vmexit_hlt; 204 uint64_t vmexit_pause; 205 uint64_t vmexit_mtrap; 206 uint64_t vmexit_inst_emul; 207 uint64_t cpu_switch_rotate; 208 uint64_t cpu_switch_direct; 209 } stats; 210 211 static struct vcpu_info { 212 struct vmctx *ctx; 213 struct vcpu *vcpu; 214 int vcpuid; 215 } *vcpu_info; 216 217 static cpuset_t **vcpumap; 218 219 static void 220 usage(int code) 221 { 222 223 fprintf(stderr, 224 "Usage: %s [-AaCDeHhPSuWwxY]\n" 225 " %*s [-c [[cpus=]numcpus][,sockets=n][,cores=n][,threads=n]]\n" 226 " %*s [-G port] [-k config_file] [-l lpc] [-m mem] [-o var=value]\n" 227 " %*s [-p vcpu:hostcpu] [-r file] [-s pci] [-U uuid] vmname\n" 228 " -A: create ACPI tables\n" 229 " -a: local apic is in xAPIC mode (deprecated)\n" 230 " -C: include guest memory in core file\n" 231 " -c: number of CPUs and/or topology specification\n" 232 " -D: destroy on power-off\n" 233 " -e: exit on unhandled I/O access\n" 234 " -G: start a debug server\n" 235 " -H: vmexit from the guest on HLT\n" 236 " -h: help\n" 237 " -k: key=value flat config file\n" 238 " -K: PS2 keyboard layout\n" 239 " -l: LPC device configuration\n" 240 " -m: memory size\n" 241 " -o: set config 'var' to 'value'\n" 242 " -P: vmexit from the guest on pause\n" 243 " -p: pin 'vcpu' to 'hostcpu'\n" 244 #ifdef BHYVE_SNAPSHOT 245 " -r: path to checkpoint file\n" 246 #endif 247 " -S: guest memory cannot be swapped\n" 248 " -s: <slot,driver,configinfo> PCI slot config\n" 249 " -U: UUID\n" 250 " -u: RTC keeps UTC time\n" 251 " -W: force virtio to use single-vector MSI\n" 252 " -w: ignore unimplemented MSRs\n" 253 " -x: local APIC is in x2APIC mode\n" 254 " -Y: disable MPtable generation\n", 255 progname, (int)strlen(progname), "", (int)strlen(progname), "", 256 (int)strlen(progname), ""); 257 258 exit(code); 259 } 260 261 /* 262 * XXX This parser is known to have the following issues: 263 * 1. It accepts null key=value tokens ",," as setting "cpus" to an 264 * empty string. 265 * 266 * The acceptance of a null specification ('-c ""') is by design to match the 267 * manual page syntax specification, this results in a topology of 1 vCPU. 268 */ 269 static int 270 topology_parse(const char *opt) 271 { 272 char *cp, *str, *tofree; 273 274 if (*opt == '\0') { 275 set_config_value("sockets", "1"); 276 set_config_value("cores", "1"); 277 set_config_value("threads", "1"); 278 set_config_value("cpus", "1"); 279 return (0); 280 } 281 282 tofree = str = strdup(opt); 283 if (str == NULL) 284 errx(4, "Failed to allocate memory"); 285 286 while ((cp = strsep(&str, ",")) != NULL) { 287 if (strncmp(cp, "cpus=", strlen("cpus=")) == 0) 288 set_config_value("cpus", cp + strlen("cpus=")); 289 else if (strncmp(cp, "sockets=", strlen("sockets=")) == 0) 290 set_config_value("sockets", cp + strlen("sockets=")); 291 else if (strncmp(cp, "cores=", strlen("cores=")) == 0) 292 set_config_value("cores", cp + strlen("cores=")); 293 else if (strncmp(cp, "threads=", strlen("threads=")) == 0) 294 set_config_value("threads", cp + strlen("threads=")); 295 #ifdef notyet /* Do not expose this until vmm.ko implements it */ 296 else if (strncmp(cp, "maxcpus=", strlen("maxcpus=")) == 0) 297 set_config_value("maxcpus", cp + strlen("maxcpus=")); 298 #endif 299 else if (strchr(cp, '=') != NULL) 300 goto out; 301 else 302 set_config_value("cpus", cp); 303 } 304 free(tofree); 305 return (0); 306 307 out: 308 free(tofree); 309 return (-1); 310 } 311 312 static int 313 parse_int_value(const char *key, const char *value, int minval, int maxval) 314 { 315 char *cp; 316 long lval; 317 318 errno = 0; 319 lval = strtol(value, &cp, 0); 320 if (errno != 0 || *cp != '\0' || cp == value || lval < minval || 321 lval > maxval) 322 errx(4, "Invalid value for %s: '%s'", key, value); 323 return (lval); 324 } 325 326 /* 327 * Set the sockets, cores, threads, and guest_cpus variables based on 328 * the configured topology. 329 * 330 * The limits of UINT16_MAX are due to the types passed to 331 * vm_set_topology(). vmm.ko may enforce tighter limits. 332 */ 333 static void 334 calc_topology(void) 335 { 336 const char *value; 337 bool explicit_cpus; 338 uint64_t ncpus; 339 340 value = get_config_value("cpus"); 341 if (value != NULL) { 342 guest_ncpus = parse_int_value("cpus", value, 1, UINT16_MAX); 343 explicit_cpus = true; 344 } else { 345 guest_ncpus = 1; 346 explicit_cpus = false; 347 } 348 value = get_config_value("cores"); 349 if (value != NULL) 350 cpu_cores = parse_int_value("cores", value, 1, UINT16_MAX); 351 else 352 cpu_cores = 1; 353 value = get_config_value("threads"); 354 if (value != NULL) 355 cpu_threads = parse_int_value("threads", value, 1, UINT16_MAX); 356 else 357 cpu_threads = 1; 358 value = get_config_value("sockets"); 359 if (value != NULL) 360 cpu_sockets = parse_int_value("sockets", value, 1, UINT16_MAX); 361 else 362 cpu_sockets = guest_ncpus; 363 364 /* 365 * Compute sockets * cores * threads avoiding overflow. The 366 * range check above insures these are 16 bit values. 367 */ 368 ncpus = (uint64_t)cpu_sockets * cpu_cores * cpu_threads; 369 if (ncpus > UINT16_MAX) 370 errx(4, "Computed number of vCPUs too high: %ju", 371 (uintmax_t)ncpus); 372 373 if (explicit_cpus) { 374 if (guest_ncpus != (int)ncpus) 375 errx(4, "Topology (%d sockets, %d cores, %d threads) " 376 "does not match %d vCPUs", 377 cpu_sockets, cpu_cores, cpu_threads, 378 guest_ncpus); 379 } else 380 guest_ncpus = ncpus; 381 } 382 383 static int 384 pincpu_parse(const char *opt) 385 { 386 const char *value; 387 char *newval; 388 char key[16]; 389 int vcpu, pcpu; 390 391 if (sscanf(opt, "%d:%d", &vcpu, &pcpu) != 2) { 392 fprintf(stderr, "invalid format: %s\n", opt); 393 return (-1); 394 } 395 396 if (vcpu < 0) { 397 fprintf(stderr, "invalid vcpu '%d'\n", vcpu); 398 return (-1); 399 } 400 401 if (pcpu < 0 || pcpu >= CPU_SETSIZE) { 402 fprintf(stderr, "hostcpu '%d' outside valid range from " 403 "0 to %d\n", pcpu, CPU_SETSIZE - 1); 404 return (-1); 405 } 406 407 snprintf(key, sizeof(key), "vcpu.%d.cpuset", vcpu); 408 value = get_config_value(key); 409 410 if (asprintf(&newval, "%s%s%d", value != NULL ? value : "", 411 value != NULL ? "," : "", pcpu) == -1) { 412 perror("failed to build new cpuset string"); 413 return (-1); 414 } 415 416 set_config_value(key, newval); 417 free(newval); 418 return (0); 419 } 420 421 static void 422 parse_cpuset(int vcpu, const char *list, cpuset_t *set) 423 { 424 char *cp, *token; 425 int pcpu, start; 426 427 CPU_ZERO(set); 428 start = -1; 429 token = __DECONST(char *, list); 430 for (;;) { 431 pcpu = strtoul(token, &cp, 0); 432 if (cp == token) 433 errx(4, "invalid cpuset for vcpu %d: '%s'", vcpu, list); 434 if (pcpu < 0 || pcpu >= CPU_SETSIZE) 435 errx(4, "hostcpu '%d' outside valid range from 0 to %d", 436 pcpu, CPU_SETSIZE - 1); 437 switch (*cp) { 438 case ',': 439 case '\0': 440 if (start >= 0) { 441 if (start > pcpu) 442 errx(4, "Invalid hostcpu range %d-%d", 443 start, pcpu); 444 while (start < pcpu) { 445 CPU_SET(start, set); 446 start++; 447 } 448 start = -1; 449 } 450 CPU_SET(pcpu, set); 451 break; 452 case '-': 453 if (start >= 0) 454 errx(4, "invalid cpuset for vcpu %d: '%s'", 455 vcpu, list); 456 start = pcpu; 457 break; 458 default: 459 errx(4, "invalid cpuset for vcpu %d: '%s'", vcpu, list); 460 } 461 if (*cp == '\0') 462 break; 463 token = cp + 1; 464 } 465 } 466 467 static void 468 build_vcpumaps(void) 469 { 470 char key[16]; 471 const char *value; 472 int vcpu; 473 474 vcpumap = calloc(guest_ncpus, sizeof(*vcpumap)); 475 for (vcpu = 0; vcpu < guest_ncpus; vcpu++) { 476 snprintf(key, sizeof(key), "vcpu.%d.cpuset", vcpu); 477 value = get_config_value(key); 478 if (value == NULL) 479 continue; 480 vcpumap[vcpu] = malloc(sizeof(cpuset_t)); 481 if (vcpumap[vcpu] == NULL) 482 err(4, "Failed to allocate cpuset for vcpu %d", vcpu); 483 parse_cpuset(vcpu, value, vcpumap[vcpu]); 484 } 485 } 486 487 void 488 vm_inject_fault(struct vcpu *vcpu, int vector, int errcode_valid, 489 int errcode) 490 { 491 int error, restart_instruction; 492 493 restart_instruction = 1; 494 495 error = vm_inject_exception(vcpu, vector, errcode_valid, errcode, 496 restart_instruction); 497 assert(error == 0); 498 } 499 500 void * 501 paddr_guest2host(struct vmctx *ctx, uintptr_t gaddr, size_t len) 502 { 503 504 return (vm_map_gpa(ctx, gaddr, len)); 505 } 506 507 #ifdef BHYVE_SNAPSHOT 508 uintptr_t 509 paddr_host2guest(struct vmctx *ctx, void *addr) 510 { 511 return (vm_rev_map_gpa(ctx, addr)); 512 } 513 #endif 514 515 int 516 fbsdrun_virtio_msix(void) 517 { 518 519 return (get_config_bool_default("virtio_msix", true)); 520 } 521 522 static void * 523 fbsdrun_start_thread(void *param) 524 { 525 char tname[MAXCOMLEN + 1]; 526 struct vcpu_info *vi = param; 527 int error; 528 529 snprintf(tname, sizeof(tname), "vcpu %d", vi->vcpuid); 530 pthread_set_name_np(pthread_self(), tname); 531 532 if (vcpumap[vi->vcpuid] != NULL) { 533 error = pthread_setaffinity_np(pthread_self(), 534 sizeof(cpuset_t), vcpumap[vi->vcpuid]); 535 assert(error == 0); 536 } 537 538 #ifdef BHYVE_SNAPSHOT 539 checkpoint_cpu_add(vi->vcpuid); 540 #endif 541 gdb_cpu_add(vi->vcpu); 542 543 vm_loop(vi->ctx, vi->vcpu); 544 545 /* not reached */ 546 exit(1); 547 return (NULL); 548 } 549 550 static void 551 fbsdrun_addcpu(struct vcpu_info *vi) 552 { 553 pthread_t thr; 554 int error; 555 556 error = vm_activate_cpu(vi->vcpu); 557 if (error != 0) 558 err(EX_OSERR, "could not activate CPU %d", vi->vcpuid); 559 560 CPU_SET_ATOMIC(vi->vcpuid, &cpumask); 561 562 vm_suspend_cpu(vi->vcpu); 563 564 error = pthread_create(&thr, NULL, fbsdrun_start_thread, vi); 565 assert(error == 0); 566 } 567 568 static int 569 fbsdrun_deletecpu(int vcpu) 570 { 571 572 if (!CPU_ISSET(vcpu, &cpumask)) { 573 fprintf(stderr, "Attempting to delete unknown cpu %d\n", vcpu); 574 exit(4); 575 } 576 577 CPU_CLR_ATOMIC(vcpu, &cpumask); 578 return (CPU_EMPTY(&cpumask)); 579 } 580 581 static int 582 vmexit_handle_notify(struct vmctx *ctx __unused, struct vcpu *vcpu __unused, 583 struct vm_exit *vme __unused, uint32_t eax __unused) 584 { 585 #if BHYVE_DEBUG 586 /* 587 * put guest-driven debug here 588 */ 589 #endif 590 return (VMEXIT_CONTINUE); 591 } 592 593 static int 594 vmexit_inout(struct vmctx *ctx, struct vcpu *vcpu, struct vm_exit *vme) 595 { 596 int error; 597 int bytes, port, in, out; 598 599 port = vme->u.inout.port; 600 bytes = vme->u.inout.bytes; 601 in = vme->u.inout.in; 602 out = !in; 603 604 /* Extra-special case of host notifications */ 605 if (out && port == GUEST_NIO_PORT) { 606 error = vmexit_handle_notify(ctx, vcpu, vme, vme->u.inout.eax); 607 return (error); 608 } 609 610 error = emulate_inout(ctx, vcpu, vme); 611 if (error) { 612 fprintf(stderr, "Unhandled %s%c 0x%04x at 0x%lx\n", 613 in ? "in" : "out", 614 bytes == 1 ? 'b' : (bytes == 2 ? 'w' : 'l'), 615 port, vme->rip); 616 return (VMEXIT_ABORT); 617 } else { 618 return (VMEXIT_CONTINUE); 619 } 620 } 621 622 static int 623 vmexit_rdmsr(struct vmctx *ctx __unused, struct vcpu *vcpu, struct vm_exit *vme) 624 { 625 uint64_t val; 626 uint32_t eax, edx; 627 int error; 628 629 val = 0; 630 error = emulate_rdmsr(vcpu, vme->u.msr.code, &val); 631 if (error != 0) { 632 fprintf(stderr, "rdmsr to register %#x on vcpu %d\n", 633 vme->u.msr.code, vcpu_id(vcpu)); 634 if (get_config_bool("x86.strictmsr")) { 635 vm_inject_gp(vcpu); 636 return (VMEXIT_CONTINUE); 637 } 638 } 639 640 eax = val; 641 error = vm_set_register(vcpu, VM_REG_GUEST_RAX, eax); 642 assert(error == 0); 643 644 edx = val >> 32; 645 error = vm_set_register(vcpu, VM_REG_GUEST_RDX, edx); 646 assert(error == 0); 647 648 return (VMEXIT_CONTINUE); 649 } 650 651 static int 652 vmexit_wrmsr(struct vmctx *ctx __unused, struct vcpu *vcpu, struct vm_exit *vme) 653 { 654 int error; 655 656 error = emulate_wrmsr(vcpu, vme->u.msr.code, vme->u.msr.wval); 657 if (error != 0) { 658 fprintf(stderr, "wrmsr to register %#x(%#lx) on vcpu %d\n", 659 vme->u.msr.code, vme->u.msr.wval, vcpu_id(vcpu)); 660 if (get_config_bool("x86.strictmsr")) { 661 vm_inject_gp(vcpu); 662 return (VMEXIT_CONTINUE); 663 } 664 } 665 return (VMEXIT_CONTINUE); 666 } 667 668 #define DEBUG_EPT_MISCONFIG 669 #ifdef DEBUG_EPT_MISCONFIG 670 #define VMCS_GUEST_PHYSICAL_ADDRESS 0x00002400 671 672 static uint64_t ept_misconfig_gpa, ept_misconfig_pte[4]; 673 static int ept_misconfig_ptenum; 674 #endif 675 676 static const char * 677 vmexit_vmx_desc(uint32_t exit_reason) 678 { 679 680 if (exit_reason >= nitems(vmx_exit_reason_desc) || 681 vmx_exit_reason_desc[exit_reason] == NULL) 682 return ("Unknown"); 683 return (vmx_exit_reason_desc[exit_reason]); 684 } 685 686 static int 687 vmexit_vmx(struct vmctx *ctx, struct vcpu *vcpu, struct vm_exit *vme) 688 { 689 690 fprintf(stderr, "vm exit[%d]\n", vcpu_id(vcpu)); 691 fprintf(stderr, "\treason\t\tVMX\n"); 692 fprintf(stderr, "\trip\t\t0x%016lx\n", vme->rip); 693 fprintf(stderr, "\tinst_length\t%d\n", vme->inst_length); 694 fprintf(stderr, "\tstatus\t\t%d\n", vme->u.vmx.status); 695 fprintf(stderr, "\texit_reason\t%u (%s)\n", vme->u.vmx.exit_reason, 696 vmexit_vmx_desc(vme->u.vmx.exit_reason)); 697 fprintf(stderr, "\tqualification\t0x%016lx\n", 698 vme->u.vmx.exit_qualification); 699 fprintf(stderr, "\tinst_type\t\t%d\n", vme->u.vmx.inst_type); 700 fprintf(stderr, "\tinst_error\t\t%d\n", vme->u.vmx.inst_error); 701 #ifdef DEBUG_EPT_MISCONFIG 702 if (vme->u.vmx.exit_reason == EXIT_REASON_EPT_MISCONFIG) { 703 vm_get_register(vcpu, 704 VMCS_IDENT(VMCS_GUEST_PHYSICAL_ADDRESS), 705 &ept_misconfig_gpa); 706 vm_get_gpa_pmap(ctx, ept_misconfig_gpa, ept_misconfig_pte, 707 &ept_misconfig_ptenum); 708 fprintf(stderr, "\tEPT misconfiguration:\n"); 709 fprintf(stderr, "\t\tGPA: %#lx\n", ept_misconfig_gpa); 710 fprintf(stderr, "\t\tPTE(%d): %#lx %#lx %#lx %#lx\n", 711 ept_misconfig_ptenum, ept_misconfig_pte[0], 712 ept_misconfig_pte[1], ept_misconfig_pte[2], 713 ept_misconfig_pte[3]); 714 } 715 #endif /* DEBUG_EPT_MISCONFIG */ 716 return (VMEXIT_ABORT); 717 } 718 719 static int 720 vmexit_svm(struct vmctx *ctx __unused, struct vcpu *vcpu, struct vm_exit *vme) 721 { 722 723 fprintf(stderr, "vm exit[%d]\n", vcpu_id(vcpu)); 724 fprintf(stderr, "\treason\t\tSVM\n"); 725 fprintf(stderr, "\trip\t\t0x%016lx\n", vme->rip); 726 fprintf(stderr, "\tinst_length\t%d\n", vme->inst_length); 727 fprintf(stderr, "\texitcode\t%#lx\n", vme->u.svm.exitcode); 728 fprintf(stderr, "\texitinfo1\t%#lx\n", vme->u.svm.exitinfo1); 729 fprintf(stderr, "\texitinfo2\t%#lx\n", vme->u.svm.exitinfo2); 730 return (VMEXIT_ABORT); 731 } 732 733 static int 734 vmexit_bogus(struct vmctx *ctx __unused, struct vcpu *vcpu __unused, 735 struct vm_exit *vme) 736 { 737 738 assert(vme->inst_length == 0); 739 740 stats.vmexit_bogus++; 741 742 return (VMEXIT_CONTINUE); 743 } 744 745 static int 746 vmexit_reqidle(struct vmctx *ctx __unused, struct vcpu *vcpu __unused, 747 struct vm_exit *vme) 748 { 749 750 assert(vme->inst_length == 0); 751 752 stats.vmexit_reqidle++; 753 754 return (VMEXIT_CONTINUE); 755 } 756 757 static int 758 vmexit_hlt(struct vmctx *ctx __unused, struct vcpu *vcpu __unused, 759 struct vm_exit *vme __unused) 760 { 761 762 stats.vmexit_hlt++; 763 764 /* 765 * Just continue execution with the next instruction. We use 766 * the HLT VM exit as a way to be friendly with the host 767 * scheduler. 768 */ 769 return (VMEXIT_CONTINUE); 770 } 771 772 static int 773 vmexit_pause(struct vmctx *ctx __unused, struct vcpu *vcpu __unused, 774 struct vm_exit *vme __unused) 775 { 776 777 stats.vmexit_pause++; 778 779 return (VMEXIT_CONTINUE); 780 } 781 782 static int 783 vmexit_mtrap(struct vmctx *ctx __unused, struct vcpu *vcpu, 784 struct vm_exit *vme) 785 { 786 787 assert(vme->inst_length == 0); 788 789 stats.vmexit_mtrap++; 790 791 #ifdef BHYVE_SNAPSHOT 792 checkpoint_cpu_suspend(vcpu_id(vcpu)); 793 #endif 794 gdb_cpu_mtrap(vcpu); 795 #ifdef BHYVE_SNAPSHOT 796 checkpoint_cpu_resume(vcpu_id(vcpu)); 797 #endif 798 799 return (VMEXIT_CONTINUE); 800 } 801 802 static int 803 vmexit_inst_emul(struct vmctx *ctx __unused, struct vcpu *vcpu, 804 struct vm_exit *vme) 805 { 806 int err, i, cs_d; 807 struct vie *vie; 808 enum vm_cpu_mode mode; 809 810 stats.vmexit_inst_emul++; 811 812 vie = &vme->u.inst_emul.vie; 813 if (!vie->decoded) { 814 /* 815 * Attempt to decode in userspace as a fallback. This allows 816 * updating instruction decode in bhyve without rebooting the 817 * kernel (rapid prototyping), albeit with much slower 818 * emulation. 819 */ 820 vie_restart(vie); 821 mode = vme->u.inst_emul.paging.cpu_mode; 822 cs_d = vme->u.inst_emul.cs_d; 823 if (vmm_decode_instruction(mode, cs_d, vie) != 0) 824 goto fail; 825 if (vm_set_register(vcpu, VM_REG_GUEST_RIP, 826 vme->rip + vie->num_processed) != 0) 827 goto fail; 828 } 829 830 err = emulate_mem(vcpu, vme->u.inst_emul.gpa, vie, 831 &vme->u.inst_emul.paging); 832 if (err) { 833 if (err == ESRCH) { 834 EPRINTLN("Unhandled memory access to 0x%lx\n", 835 vme->u.inst_emul.gpa); 836 } 837 goto fail; 838 } 839 840 return (VMEXIT_CONTINUE); 841 842 fail: 843 fprintf(stderr, "Failed to emulate instruction sequence [ "); 844 for (i = 0; i < vie->num_valid; i++) 845 fprintf(stderr, "%02x", vie->inst[i]); 846 FPRINTLN(stderr, " ] at 0x%lx", vme->rip); 847 return (VMEXIT_ABORT); 848 } 849 850 static pthread_mutex_t resetcpu_mtx = PTHREAD_MUTEX_INITIALIZER; 851 static pthread_cond_t resetcpu_cond = PTHREAD_COND_INITIALIZER; 852 853 static int 854 vmexit_suspend(struct vmctx *ctx, struct vcpu *vcpu, struct vm_exit *vme) 855 { 856 enum vm_suspend_how how; 857 int vcpuid = vcpu_id(vcpu); 858 859 how = vme->u.suspended.how; 860 861 fbsdrun_deletecpu(vcpuid); 862 863 if (vcpuid != BSP) { 864 pthread_mutex_lock(&resetcpu_mtx); 865 pthread_cond_signal(&resetcpu_cond); 866 pthread_mutex_unlock(&resetcpu_mtx); 867 pthread_exit(NULL); 868 } 869 870 pthread_mutex_lock(&resetcpu_mtx); 871 while (!CPU_EMPTY(&cpumask)) { 872 pthread_cond_wait(&resetcpu_cond, &resetcpu_mtx); 873 } 874 pthread_mutex_unlock(&resetcpu_mtx); 875 876 switch (how) { 877 case VM_SUSPEND_RESET: 878 exit(0); 879 case VM_SUSPEND_POWEROFF: 880 if (get_config_bool_default("destroy_on_poweroff", false)) 881 vm_destroy(ctx); 882 exit(1); 883 case VM_SUSPEND_HALT: 884 exit(2); 885 case VM_SUSPEND_TRIPLEFAULT: 886 exit(3); 887 default: 888 fprintf(stderr, "vmexit_suspend: invalid reason %d\n", how); 889 exit(100); 890 } 891 return (0); /* NOTREACHED */ 892 } 893 894 static int 895 vmexit_debug(struct vmctx *ctx __unused, struct vcpu *vcpu, 896 struct vm_exit *vme __unused) 897 { 898 899 #ifdef BHYVE_SNAPSHOT 900 checkpoint_cpu_suspend(vcpu_id(vcpu)); 901 #endif 902 gdb_cpu_suspend(vcpu); 903 #ifdef BHYVE_SNAPSHOT 904 checkpoint_cpu_resume(vcpu_id(vcpu)); 905 #endif 906 /* 907 * XXX-MJ sleep for a short period to avoid chewing up the CPU in the 908 * window between activation of the vCPU thread and the STARTUP IPI. 909 */ 910 usleep(1000); 911 return (VMEXIT_CONTINUE); 912 } 913 914 static int 915 vmexit_breakpoint(struct vmctx *ctx __unused, struct vcpu *vcpu, 916 struct vm_exit *vme) 917 { 918 919 gdb_cpu_breakpoint(vcpu, vme); 920 return (VMEXIT_CONTINUE); 921 } 922 923 static int 924 vmexit_ipi(struct vmctx *ctx __unused, struct vcpu *vcpu __unused, 925 struct vm_exit *vme) 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(vcpu_info[i].vcpu); 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(vcpu_info[i].vcpu, 943 vme->u.ipi.vector << PAGE_SHIFT); 944 } 945 error = 0; 946 break; 947 default: 948 break; 949 } 950 951 return (error); 952 } 953 954 static vmexit_handler_t handler[VM_EXITCODE_MAX] = { 955 [VM_EXITCODE_INOUT] = vmexit_inout, 956 [VM_EXITCODE_INOUT_STR] = vmexit_inout, 957 [VM_EXITCODE_VMX] = vmexit_vmx, 958 [VM_EXITCODE_SVM] = vmexit_svm, 959 [VM_EXITCODE_BOGUS] = vmexit_bogus, 960 [VM_EXITCODE_REQIDLE] = vmexit_reqidle, 961 [VM_EXITCODE_RDMSR] = vmexit_rdmsr, 962 [VM_EXITCODE_WRMSR] = vmexit_wrmsr, 963 [VM_EXITCODE_MTRAP] = vmexit_mtrap, 964 [VM_EXITCODE_INST_EMUL] = vmexit_inst_emul, 965 [VM_EXITCODE_SUSPENDED] = vmexit_suspend, 966 [VM_EXITCODE_TASK_SWITCH] = vmexit_task_switch, 967 [VM_EXITCODE_DEBUG] = vmexit_debug, 968 [VM_EXITCODE_BPT] = vmexit_breakpoint, 969 [VM_EXITCODE_IPI] = vmexit_ipi, 970 }; 971 972 static void 973 vm_loop(struct vmctx *ctx, struct vcpu *vcpu) 974 { 975 struct vm_exit vme; 976 int error, rc; 977 enum vm_exitcode exitcode; 978 cpuset_t active_cpus; 979 980 error = vm_active_cpus(ctx, &active_cpus); 981 assert(CPU_ISSET(vcpu_id(vcpu), &active_cpus)); 982 983 while (1) { 984 error = vm_run(vcpu, &vme); 985 if (error != 0) 986 break; 987 988 exitcode = vme.exitcode; 989 if (exitcode >= VM_EXITCODE_MAX || handler[exitcode] == NULL) { 990 fprintf(stderr, "vm_loop: unexpected exitcode 0x%x\n", 991 exitcode); 992 exit(4); 993 } 994 995 rc = (*handler[exitcode])(ctx, vcpu, &vme); 996 997 switch (rc) { 998 case VMEXIT_CONTINUE: 999 break; 1000 case VMEXIT_ABORT: 1001 abort(); 1002 default: 1003 exit(4); 1004 } 1005 } 1006 fprintf(stderr, "vm_run error %d, errno %d\n", error, errno); 1007 } 1008 1009 static int 1010 num_vcpus_allowed(struct vmctx *ctx, struct vcpu *vcpu) 1011 { 1012 uint16_t sockets, cores, threads, maxcpus; 1013 int tmp, error; 1014 1015 /* 1016 * The guest is allowed to spinup more than one processor only if the 1017 * UNRESTRICTED_GUEST capability is available. 1018 */ 1019 error = vm_get_capability(vcpu, VM_CAP_UNRESTRICTED_GUEST, &tmp); 1020 if (error != 0) 1021 return (1); 1022 1023 error = vm_get_topology(ctx, &sockets, &cores, &threads, &maxcpus); 1024 if (error == 0) 1025 return (maxcpus); 1026 else 1027 return (1); 1028 } 1029 1030 static void 1031 fbsdrun_set_capabilities(struct vcpu *vcpu, bool bsp) 1032 { 1033 int err, tmp; 1034 1035 if (get_config_bool_default("x86.vmexit_on_hlt", false)) { 1036 err = vm_get_capability(vcpu, VM_CAP_HALT_EXIT, &tmp); 1037 if (err < 0) { 1038 fprintf(stderr, "VM exit on HLT not supported\n"); 1039 exit(4); 1040 } 1041 vm_set_capability(vcpu, VM_CAP_HALT_EXIT, 1); 1042 if (bsp) 1043 handler[VM_EXITCODE_HLT] = vmexit_hlt; 1044 } 1045 1046 if (get_config_bool_default("x86.vmexit_on_pause", false)) { 1047 /* 1048 * pause exit support required for this mode 1049 */ 1050 err = vm_get_capability(vcpu, VM_CAP_PAUSE_EXIT, &tmp); 1051 if (err < 0) { 1052 fprintf(stderr, 1053 "SMP mux requested, no pause support\n"); 1054 exit(4); 1055 } 1056 vm_set_capability(vcpu, VM_CAP_PAUSE_EXIT, 1); 1057 if (bsp) 1058 handler[VM_EXITCODE_PAUSE] = vmexit_pause; 1059 } 1060 1061 if (get_config_bool_default("x86.x2apic", false)) 1062 err = vm_set_x2apic_state(vcpu, X2APIC_ENABLED); 1063 else 1064 err = vm_set_x2apic_state(vcpu, X2APIC_DISABLED); 1065 1066 if (err) { 1067 fprintf(stderr, "Unable to set x2apic state (%d)\n", err); 1068 exit(4); 1069 } 1070 1071 vm_set_capability(vcpu, VM_CAP_ENABLE_INVPCID, 1); 1072 1073 err = vm_set_capability(vcpu, VM_CAP_IPI_EXIT, 1); 1074 assert(err == 0); 1075 } 1076 1077 static struct vmctx * 1078 do_open(const char *vmname) 1079 { 1080 struct vmctx *ctx; 1081 int error; 1082 bool reinit, romboot; 1083 1084 reinit = romboot = false; 1085 1086 if (lpc_bootrom()) 1087 romboot = true; 1088 1089 error = vm_create(vmname); 1090 if (error) { 1091 if (errno == EEXIST) { 1092 if (romboot) { 1093 reinit = true; 1094 } else { 1095 /* 1096 * The virtual machine has been setup by the 1097 * userspace bootloader. 1098 */ 1099 } 1100 } else { 1101 perror("vm_create"); 1102 exit(4); 1103 } 1104 } else { 1105 if (!romboot) { 1106 /* 1107 * If the virtual machine was just created then a 1108 * bootrom must be configured to boot it. 1109 */ 1110 fprintf(stderr, "virtual machine cannot be booted\n"); 1111 exit(4); 1112 } 1113 } 1114 1115 ctx = vm_open(vmname); 1116 if (ctx == NULL) { 1117 perror("vm_open"); 1118 exit(4); 1119 } 1120 1121 #ifndef WITHOUT_CAPSICUM 1122 if (vm_limit_rights(ctx) != 0) 1123 err(EX_OSERR, "vm_limit_rights"); 1124 #endif 1125 1126 if (reinit) { 1127 error = vm_reinit(ctx); 1128 if (error) { 1129 perror("vm_reinit"); 1130 exit(4); 1131 } 1132 } 1133 error = vm_set_topology(ctx, cpu_sockets, cpu_cores, cpu_threads, 1134 0 /* maxcpus, unimplemented */); 1135 if (error) 1136 errx(EX_OSERR, "vm_set_topology"); 1137 return (ctx); 1138 } 1139 1140 static void 1141 spinup_vcpu(struct vcpu_info *vi, bool bsp) 1142 { 1143 int error; 1144 1145 if (!bsp) { 1146 fbsdrun_set_capabilities(vi->vcpu, false); 1147 1148 /* 1149 * Enable the 'unrestricted guest' mode for APs. 1150 * 1151 * APs startup in power-on 16-bit mode. 1152 */ 1153 error = vm_set_capability(vi->vcpu, VM_CAP_UNRESTRICTED_GUEST, 1); 1154 assert(error == 0); 1155 } 1156 1157 fbsdrun_addcpu(vi); 1158 } 1159 1160 static bool 1161 parse_config_option(const char *option) 1162 { 1163 const char *value; 1164 char *path; 1165 1166 value = strchr(option, '='); 1167 if (value == NULL || value[1] == '\0') 1168 return (false); 1169 path = strndup(option, value - option); 1170 if (path == NULL) 1171 err(4, "Failed to allocate memory"); 1172 set_config_value(path, value + 1); 1173 return (true); 1174 } 1175 1176 static void 1177 parse_simple_config_file(const char *path) 1178 { 1179 FILE *fp; 1180 char *line, *cp; 1181 size_t linecap; 1182 unsigned int lineno; 1183 1184 fp = fopen(path, "r"); 1185 if (fp == NULL) 1186 err(4, "Failed to open configuration file %s", path); 1187 line = NULL; 1188 linecap = 0; 1189 lineno = 1; 1190 for (lineno = 1; getline(&line, &linecap, fp) > 0; lineno++) { 1191 if (*line == '#' || *line == '\n') 1192 continue; 1193 cp = strchr(line, '\n'); 1194 if (cp != NULL) 1195 *cp = '\0'; 1196 if (!parse_config_option(line)) 1197 errx(4, "%s line %u: invalid config option '%s'", path, 1198 lineno, line); 1199 } 1200 free(line); 1201 fclose(fp); 1202 } 1203 1204 static void 1205 parse_gdb_options(const char *opt) 1206 { 1207 const char *sport; 1208 char *colon; 1209 1210 if (opt[0] == 'w') { 1211 set_config_bool("gdb.wait", true); 1212 opt++; 1213 } 1214 1215 colon = strrchr(opt, ':'); 1216 if (colon == NULL) { 1217 sport = opt; 1218 } else { 1219 *colon = '\0'; 1220 colon++; 1221 sport = colon; 1222 set_config_value("gdb.address", opt); 1223 } 1224 1225 set_config_value("gdb.port", sport); 1226 } 1227 1228 static void 1229 set_defaults(void) 1230 { 1231 1232 set_config_bool("acpi_tables", false); 1233 set_config_value("memory.size", "256M"); 1234 set_config_bool("x86.strictmsr", true); 1235 set_config_value("lpc.fwcfg", "bhyve"); 1236 } 1237 1238 int 1239 main(int argc, char *argv[]) 1240 { 1241 int c, error; 1242 int max_vcpus, memflags; 1243 struct vcpu *bsp; 1244 struct vmctx *ctx; 1245 uint64_t rip; 1246 size_t memsize; 1247 const char *optstr, *value, *vmname; 1248 #ifdef BHYVE_SNAPSHOT 1249 char *restore_file; 1250 struct restore_state rstate; 1251 1252 restore_file = NULL; 1253 #endif 1254 1255 init_config(); 1256 set_defaults(); 1257 progname = basename(argv[0]); 1258 1259 #ifdef BHYVE_SNAPSHOT 1260 optstr = "aehuwxACDHIPSWYk:o:p:G:c:s:m:l:K:U:r:"; 1261 #else 1262 optstr = "aehuwxACDHIPSWYk:o:p:G:c:s:m:l:K:U:"; 1263 #endif 1264 while ((c = getopt(argc, argv, optstr)) != -1) { 1265 switch (c) { 1266 case 'a': 1267 set_config_bool("x86.x2apic", false); 1268 break; 1269 case 'A': 1270 set_config_bool("acpi_tables", true); 1271 break; 1272 case 'D': 1273 set_config_bool("destroy_on_poweroff", true); 1274 break; 1275 case 'p': 1276 if (pincpu_parse(optarg) != 0) { 1277 errx(EX_USAGE, "invalid vcpu pinning " 1278 "configuration '%s'", optarg); 1279 } 1280 break; 1281 case 'c': 1282 if (topology_parse(optarg) != 0) { 1283 errx(EX_USAGE, "invalid cpu topology " 1284 "'%s'", optarg); 1285 } 1286 break; 1287 case 'C': 1288 set_config_bool("memory.guest_in_core", true); 1289 break; 1290 case 'G': 1291 parse_gdb_options(optarg); 1292 break; 1293 case 'k': 1294 parse_simple_config_file(optarg); 1295 break; 1296 case 'K': 1297 set_config_value("keyboard.layout", optarg); 1298 break; 1299 case 'l': 1300 if (strncmp(optarg, "help", strlen(optarg)) == 0) { 1301 lpc_print_supported_devices(); 1302 exit(0); 1303 } else if (lpc_device_parse(optarg) != 0) { 1304 errx(EX_USAGE, "invalid lpc device " 1305 "configuration '%s'", optarg); 1306 } 1307 break; 1308 #ifdef BHYVE_SNAPSHOT 1309 case 'r': 1310 restore_file = optarg; 1311 break; 1312 #endif 1313 case 's': 1314 if (strncmp(optarg, "help", strlen(optarg)) == 0) { 1315 pci_print_supported_devices(); 1316 exit(0); 1317 } else if (pci_parse_slot(optarg) != 0) 1318 exit(4); 1319 else 1320 break; 1321 case 'S': 1322 set_config_bool("memory.wired", true); 1323 break; 1324 case 'm': 1325 set_config_value("memory.size", optarg); 1326 break; 1327 case 'o': 1328 if (!parse_config_option(optarg)) 1329 errx(EX_USAGE, "invalid configuration option '%s'", optarg); 1330 break; 1331 case 'H': 1332 set_config_bool("x86.vmexit_on_hlt", true); 1333 break; 1334 case 'I': 1335 /* 1336 * The "-I" option was used to add an ioapic to the 1337 * virtual machine. 1338 * 1339 * An ioapic is now provided unconditionally for each 1340 * virtual machine and this option is now deprecated. 1341 */ 1342 break; 1343 case 'P': 1344 set_config_bool("x86.vmexit_on_pause", true); 1345 break; 1346 case 'e': 1347 set_config_bool("x86.strictio", true); 1348 break; 1349 case 'u': 1350 set_config_bool("rtc.use_localtime", false); 1351 break; 1352 case 'U': 1353 set_config_value("uuid", optarg); 1354 break; 1355 case 'w': 1356 set_config_bool("x86.strictmsr", false); 1357 break; 1358 case 'W': 1359 set_config_bool("virtio_msix", false); 1360 break; 1361 case 'x': 1362 set_config_bool("x86.x2apic", true); 1363 break; 1364 case 'Y': 1365 set_config_bool("x86.mptable", false); 1366 break; 1367 case 'h': 1368 usage(0); 1369 default: 1370 usage(1); 1371 } 1372 } 1373 argc -= optind; 1374 argv += optind; 1375 1376 if (argc > 1) 1377 usage(1); 1378 1379 #ifdef BHYVE_SNAPSHOT 1380 if (restore_file != NULL) { 1381 error = load_restore_file(restore_file, &rstate); 1382 if (error) { 1383 fprintf(stderr, "Failed to read checkpoint info from " 1384 "file: '%s'.\n", restore_file); 1385 exit(1); 1386 } 1387 vmname = lookup_vmname(&rstate); 1388 if (vmname != NULL) 1389 set_config_value("name", vmname); 1390 } 1391 #endif 1392 1393 if (argc == 1) 1394 set_config_value("name", argv[0]); 1395 1396 vmname = get_config_value("name"); 1397 if (vmname == NULL) 1398 usage(1); 1399 1400 if (get_config_bool_default("config.dump", false)) { 1401 dump_config(); 1402 exit(1); 1403 } 1404 1405 calc_topology(); 1406 build_vcpumaps(); 1407 1408 value = get_config_value("memory.size"); 1409 error = vm_parse_memsize(value, &memsize); 1410 if (error) 1411 errx(EX_USAGE, "invalid memsize '%s'", value); 1412 1413 ctx = do_open(vmname); 1414 1415 #ifdef BHYVE_SNAPSHOT 1416 if (restore_file != NULL) { 1417 guest_ncpus = lookup_guest_ncpus(&rstate); 1418 memflags = lookup_memflags(&rstate); 1419 memsize = lookup_memsize(&rstate); 1420 } 1421 1422 if (guest_ncpus < 1) { 1423 fprintf(stderr, "Invalid guest vCPUs (%d)\n", guest_ncpus); 1424 exit(1); 1425 } 1426 #endif 1427 1428 bsp = vm_vcpu_open(ctx, BSP); 1429 max_vcpus = num_vcpus_allowed(ctx, bsp); 1430 if (guest_ncpus > max_vcpus) { 1431 fprintf(stderr, "%d vCPUs requested but only %d available\n", 1432 guest_ncpus, max_vcpus); 1433 exit(4); 1434 } 1435 1436 fbsdrun_set_capabilities(bsp, true); 1437 1438 /* Allocate per-VCPU resources. */ 1439 vcpu_info = calloc(guest_ncpus, sizeof(*vcpu_info)); 1440 for (int vcpuid = 0; vcpuid < guest_ncpus; vcpuid++) { 1441 vcpu_info[vcpuid].ctx = ctx; 1442 vcpu_info[vcpuid].vcpuid = vcpuid; 1443 if (vcpuid == BSP) 1444 vcpu_info[vcpuid].vcpu = bsp; 1445 else 1446 vcpu_info[vcpuid].vcpu = vm_vcpu_open(ctx, vcpuid); 1447 } 1448 1449 memflags = 0; 1450 if (get_config_bool_default("memory.wired", false)) 1451 memflags |= VM_MEM_F_WIRED; 1452 if (get_config_bool_default("memory.guest_in_core", false)) 1453 memflags |= VM_MEM_F_INCORE; 1454 vm_set_memflags(ctx, memflags); 1455 error = vm_setup_memory(ctx, memsize, VM_MMAP_ALL); 1456 if (error) { 1457 fprintf(stderr, "Unable to setup memory (%d)\n", errno); 1458 exit(4); 1459 } 1460 1461 error = init_msr(); 1462 if (error) { 1463 fprintf(stderr, "init_msr error %d", error); 1464 exit(4); 1465 } 1466 1467 init_mem(guest_ncpus); 1468 init_inout(); 1469 kernemu_dev_init(); 1470 init_bootrom(ctx); 1471 atkbdc_init(ctx); 1472 pci_irq_init(ctx); 1473 ioapic_init(ctx); 1474 1475 rtc_init(ctx); 1476 sci_init(ctx); 1477 1478 if (qemu_fwcfg_init(ctx) != 0) { 1479 fprintf(stderr, "qemu fwcfg initialization error"); 1480 exit(4); 1481 } 1482 1483 if (qemu_fwcfg_add_file("opt/bhyve/hw.ncpu", sizeof(guest_ncpus), 1484 &guest_ncpus) != 0) { 1485 fprintf(stderr, "Could not add qemu fwcfg opt/bhyve/hw.ncpu"); 1486 exit(4); 1487 } 1488 1489 /* 1490 * Exit if a device emulation finds an error in its initilization 1491 */ 1492 if (init_pci(ctx) != 0) { 1493 perror("device emulation initialization error"); 1494 exit(4); 1495 } 1496 1497 /* 1498 * Initialize after PCI, to allow a bootrom file to reserve the high 1499 * region. 1500 */ 1501 if (get_config_bool("acpi_tables")) 1502 vmgenc_init(ctx); 1503 1504 init_gdb(ctx); 1505 1506 if (lpc_bootrom()) { 1507 if (vm_set_capability(bsp, VM_CAP_UNRESTRICTED_GUEST, 1)) { 1508 fprintf(stderr, "ROM boot failed: unrestricted guest " 1509 "capability not available\n"); 1510 exit(4); 1511 } 1512 error = vcpu_reset(bsp); 1513 assert(error == 0); 1514 } 1515 1516 /* 1517 * Add all vCPUs. 1518 */ 1519 for (int vcpuid = 0; vcpuid < guest_ncpus; vcpuid++) 1520 spinup_vcpu(&vcpu_info[vcpuid], vcpuid == BSP); 1521 1522 #ifdef BHYVE_SNAPSHOT 1523 if (restore_file != NULL) { 1524 fprintf(stdout, "Pausing pci devs...\r\n"); 1525 if (vm_pause_user_devs() != 0) { 1526 fprintf(stderr, "Failed to pause PCI device state.\n"); 1527 exit(1); 1528 } 1529 1530 fprintf(stdout, "Restoring vm mem...\r\n"); 1531 if (restore_vm_mem(ctx, &rstate) != 0) { 1532 fprintf(stderr, "Failed to restore VM memory.\n"); 1533 exit(1); 1534 } 1535 1536 fprintf(stdout, "Restoring pci devs...\r\n"); 1537 if (vm_restore_user_devs(&rstate) != 0) { 1538 fprintf(stderr, "Failed to restore PCI device state.\n"); 1539 exit(1); 1540 } 1541 1542 fprintf(stdout, "Restoring kernel structs...\r\n"); 1543 if (vm_restore_kern_structs(ctx, &rstate) != 0) { 1544 fprintf(stderr, "Failed to restore kernel structs.\n"); 1545 exit(1); 1546 } 1547 1548 fprintf(stdout, "Resuming pci devs...\r\n"); 1549 if (vm_resume_user_devs() != 0) { 1550 fprintf(stderr, "Failed to resume PCI device state.\n"); 1551 exit(1); 1552 } 1553 } 1554 #endif 1555 1556 error = vm_get_register(bsp, VM_REG_GUEST_RIP, &rip); 1557 assert(error == 0); 1558 1559 /* 1560 * build the guest tables, MP etc. 1561 */ 1562 if (get_config_bool_default("x86.mptable", true)) { 1563 error = mptable_build(ctx, guest_ncpus); 1564 if (error) { 1565 perror("error to build the guest tables"); 1566 exit(4); 1567 } 1568 } 1569 1570 error = smbios_build(ctx); 1571 if (error != 0) 1572 exit(4); 1573 1574 if (get_config_bool("acpi_tables")) { 1575 error = acpi_build(ctx, guest_ncpus); 1576 assert(error == 0); 1577 } 1578 1579 if (lpc_bootrom() && strcmp(lpc_fwcfg(), "bhyve") == 0) { 1580 fwctl_init(); 1581 } 1582 1583 /* 1584 * Change the proc title to include the VM name. 1585 */ 1586 setproctitle("%s", vmname); 1587 1588 #ifdef BHYVE_SNAPSHOT 1589 /* initialize mutex/cond variables */ 1590 init_snapshot(); 1591 1592 /* 1593 * checkpointing thread for communication with bhyvectl 1594 */ 1595 if (init_checkpoint_thread(ctx) != 0) 1596 errx(EX_OSERR, "Failed to start checkpoint thread"); 1597 #endif 1598 1599 #ifndef WITHOUT_CAPSICUM 1600 caph_cache_catpages(); 1601 1602 if (caph_limit_stdout() == -1 || caph_limit_stderr() == -1) 1603 errx(EX_OSERR, "Unable to apply rights for sandbox"); 1604 1605 if (caph_enter() == -1) 1606 errx(EX_OSERR, "cap_enter() failed"); 1607 #endif 1608 1609 #ifdef BHYVE_SNAPSHOT 1610 if (restore_file != NULL) { 1611 destroy_restore_state(&rstate); 1612 if (vm_restore_time(ctx) < 0) 1613 err(EX_OSERR, "Unable to restore time"); 1614 1615 for (int vcpuid = 0; vcpuid < guest_ncpus; vcpuid++) 1616 vm_resume_cpu(vcpu_info[vcpuid].vcpu); 1617 } else 1618 #endif 1619 vm_resume_cpu(bsp); 1620 1621 /* 1622 * Head off to the main event dispatch loop 1623 */ 1624 mevent_dispatch(); 1625 1626 exit(4); 1627 } 1628