1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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 "e820.h" 95 #include "fwctl.h" 96 #include "gdb.h" 97 #include "ioapic.h" 98 #include "kernemu_dev.h" 99 #include "mem.h" 100 #include "mevent.h" 101 #include "mptbl.h" 102 #include "pci_emul.h" 103 #include "pci_irq.h" 104 #include "pci_lpc.h" 105 #include "qemu_fwcfg.h" 106 #include "smbiostbl.h" 107 #ifdef BHYVE_SNAPSHOT 108 #include "snapshot.h" 109 #endif 110 #include "xmsr.h" 111 #include "spinup_ap.h" 112 #include "rtc.h" 113 #include "vmgenc.h" 114 115 #define GUEST_NIO_PORT 0x488 /* guest upcalls via i/o port */ 116 117 #define MB (1024UL * 1024) 118 #define GB (1024UL * MB) 119 120 static const char * const vmx_exit_reason_desc[] = { 121 [EXIT_REASON_EXCEPTION] = "Exception or non-maskable interrupt (NMI)", 122 [EXIT_REASON_EXT_INTR] = "External interrupt", 123 [EXIT_REASON_TRIPLE_FAULT] = "Triple fault", 124 [EXIT_REASON_INIT] = "INIT signal", 125 [EXIT_REASON_SIPI] = "Start-up IPI (SIPI)", 126 [EXIT_REASON_IO_SMI] = "I/O system-management interrupt (SMI)", 127 [EXIT_REASON_SMI] = "Other SMI", 128 [EXIT_REASON_INTR_WINDOW] = "Interrupt window", 129 [EXIT_REASON_NMI_WINDOW] = "NMI window", 130 [EXIT_REASON_TASK_SWITCH] = "Task switch", 131 [EXIT_REASON_CPUID] = "CPUID", 132 [EXIT_REASON_GETSEC] = "GETSEC", 133 [EXIT_REASON_HLT] = "HLT", 134 [EXIT_REASON_INVD] = "INVD", 135 [EXIT_REASON_INVLPG] = "INVLPG", 136 [EXIT_REASON_RDPMC] = "RDPMC", 137 [EXIT_REASON_RDTSC] = "RDTSC", 138 [EXIT_REASON_RSM] = "RSM", 139 [EXIT_REASON_VMCALL] = "VMCALL", 140 [EXIT_REASON_VMCLEAR] = "VMCLEAR", 141 [EXIT_REASON_VMLAUNCH] = "VMLAUNCH", 142 [EXIT_REASON_VMPTRLD] = "VMPTRLD", 143 [EXIT_REASON_VMPTRST] = "VMPTRST", 144 [EXIT_REASON_VMREAD] = "VMREAD", 145 [EXIT_REASON_VMRESUME] = "VMRESUME", 146 [EXIT_REASON_VMWRITE] = "VMWRITE", 147 [EXIT_REASON_VMXOFF] = "VMXOFF", 148 [EXIT_REASON_VMXON] = "VMXON", 149 [EXIT_REASON_CR_ACCESS] = "Control-register accesses", 150 [EXIT_REASON_DR_ACCESS] = "MOV DR", 151 [EXIT_REASON_INOUT] = "I/O instruction", 152 [EXIT_REASON_RDMSR] = "RDMSR", 153 [EXIT_REASON_WRMSR] = "WRMSR", 154 [EXIT_REASON_INVAL_VMCS] = 155 "VM-entry failure due to invalid guest state", 156 [EXIT_REASON_INVAL_MSR] = "VM-entry failure due to MSR loading", 157 [EXIT_REASON_MWAIT] = "MWAIT", 158 [EXIT_REASON_MTF] = "Monitor trap flag", 159 [EXIT_REASON_MONITOR] = "MONITOR", 160 [EXIT_REASON_PAUSE] = "PAUSE", 161 [EXIT_REASON_MCE_DURING_ENTRY] = 162 "VM-entry failure due to machine-check event", 163 [EXIT_REASON_TPR] = "TPR below threshold", 164 [EXIT_REASON_APIC_ACCESS] = "APIC access", 165 [EXIT_REASON_VIRTUALIZED_EOI] = "Virtualized EOI", 166 [EXIT_REASON_GDTR_IDTR] = "Access to GDTR or IDTR", 167 [EXIT_REASON_LDTR_TR] = "Access to LDTR or TR", 168 [EXIT_REASON_EPT_FAULT] = "EPT violation", 169 [EXIT_REASON_EPT_MISCONFIG] = "EPT misconfiguration", 170 [EXIT_REASON_INVEPT] = "INVEPT", 171 [EXIT_REASON_RDTSCP] = "RDTSCP", 172 [EXIT_REASON_VMX_PREEMPT] = "VMX-preemption timer expired", 173 [EXIT_REASON_INVVPID] = "INVVPID", 174 [EXIT_REASON_WBINVD] = "WBINVD", 175 [EXIT_REASON_XSETBV] = "XSETBV", 176 [EXIT_REASON_APIC_WRITE] = "APIC write", 177 [EXIT_REASON_RDRAND] = "RDRAND", 178 [EXIT_REASON_INVPCID] = "INVPCID", 179 [EXIT_REASON_VMFUNC] = "VMFUNC", 180 [EXIT_REASON_ENCLS] = "ENCLS", 181 [EXIT_REASON_RDSEED] = "RDSEED", 182 [EXIT_REASON_PM_LOG_FULL] = "Page-modification log full", 183 [EXIT_REASON_XSAVES] = "XSAVES", 184 [EXIT_REASON_XRSTORS] = "XRSTORS" 185 }; 186 187 typedef int (*vmexit_handler_t)(struct vmctx *, struct vcpu *, struct vm_run *); 188 189 int guest_ncpus; 190 uint16_t cpu_cores, cpu_sockets, cpu_threads; 191 192 int raw_stdio = 0; 193 194 static char *progname; 195 static const int BSP = 0; 196 197 static cpuset_t cpumask; 198 199 static void vm_loop(struct vmctx *ctx, struct vcpu *vcpu); 200 201 static struct vcpu_info { 202 struct vmctx *ctx; 203 struct vcpu *vcpu; 204 int vcpuid; 205 } *vcpu_info; 206 207 static cpuset_t **vcpumap; 208 209 static void 210 usage(int code) 211 { 212 213 fprintf(stderr, 214 "Usage: %s [-AaCDeHhPSuWwxY]\n" 215 " %*s [-c [[cpus=]numcpus][,sockets=n][,cores=n][,threads=n]]\n" 216 " %*s [-G port] [-k config_file] [-l lpc] [-m mem] [-o var=value]\n" 217 " %*s [-p vcpu:hostcpu] [-r file] [-s pci] [-U uuid] vmname\n" 218 " -A: create ACPI tables\n" 219 " -a: local apic is in xAPIC mode (deprecated)\n" 220 " -C: include guest memory in core file\n" 221 " -c: number of CPUs and/or topology specification\n" 222 " -D: destroy on power-off\n" 223 " -e: exit on unhandled I/O access\n" 224 " -G: start a debug server\n" 225 " -H: vmexit from the guest on HLT\n" 226 " -h: help\n" 227 " -k: key=value flat config file\n" 228 " -K: PS2 keyboard layout\n" 229 " -l: LPC device configuration\n" 230 " -m: memory size\n" 231 " -o: set config 'var' to 'value'\n" 232 " -P: vmexit from the guest on pause\n" 233 " -p: pin 'vcpu' to 'hostcpu'\n" 234 #ifdef BHYVE_SNAPSHOT 235 " -r: path to checkpoint file\n" 236 #endif 237 " -S: guest memory cannot be swapped\n" 238 " -s: <slot,driver,configinfo> PCI slot config\n" 239 " -U: UUID\n" 240 " -u: RTC keeps UTC time\n" 241 " -W: force virtio to use single-vector MSI\n" 242 " -w: ignore unimplemented MSRs\n" 243 " -x: local APIC is in x2APIC mode\n" 244 " -Y: disable MPtable generation\n", 245 progname, (int)strlen(progname), "", (int)strlen(progname), "", 246 (int)strlen(progname), ""); 247 248 exit(code); 249 } 250 251 /* 252 * XXX This parser is known to have the following issues: 253 * 1. It accepts null key=value tokens ",," as setting "cpus" to an 254 * empty string. 255 * 256 * The acceptance of a null specification ('-c ""') is by design to match the 257 * manual page syntax specification, this results in a topology of 1 vCPU. 258 */ 259 static int 260 topology_parse(const char *opt) 261 { 262 char *cp, *str, *tofree; 263 264 if (*opt == '\0') { 265 set_config_value("sockets", "1"); 266 set_config_value("cores", "1"); 267 set_config_value("threads", "1"); 268 set_config_value("cpus", "1"); 269 return (0); 270 } 271 272 tofree = str = strdup(opt); 273 if (str == NULL) 274 errx(4, "Failed to allocate memory"); 275 276 while ((cp = strsep(&str, ",")) != NULL) { 277 if (strncmp(cp, "cpus=", strlen("cpus=")) == 0) 278 set_config_value("cpus", cp + strlen("cpus=")); 279 else if (strncmp(cp, "sockets=", strlen("sockets=")) == 0) 280 set_config_value("sockets", cp + strlen("sockets=")); 281 else if (strncmp(cp, "cores=", strlen("cores=")) == 0) 282 set_config_value("cores", cp + strlen("cores=")); 283 else if (strncmp(cp, "threads=", strlen("threads=")) == 0) 284 set_config_value("threads", cp + strlen("threads=")); 285 else if (strchr(cp, '=') != NULL) 286 goto out; 287 else 288 set_config_value("cpus", cp); 289 } 290 free(tofree); 291 return (0); 292 293 out: 294 free(tofree); 295 return (-1); 296 } 297 298 static int 299 parse_int_value(const char *key, const char *value, int minval, int maxval) 300 { 301 char *cp; 302 long lval; 303 304 errno = 0; 305 lval = strtol(value, &cp, 0); 306 if (errno != 0 || *cp != '\0' || cp == value || lval < minval || 307 lval > maxval) 308 errx(4, "Invalid value for %s: '%s'", key, value); 309 return (lval); 310 } 311 312 /* 313 * Set the sockets, cores, threads, and guest_cpus variables based on 314 * the configured topology. 315 * 316 * The limits of UINT16_MAX are due to the types passed to 317 * vm_set_topology(). vmm.ko may enforce tighter limits. 318 */ 319 static void 320 calc_topology(void) 321 { 322 const char *value; 323 bool explicit_cpus; 324 uint64_t ncpus; 325 326 value = get_config_value("cpus"); 327 if (value != NULL) { 328 guest_ncpus = parse_int_value("cpus", value, 1, UINT16_MAX); 329 explicit_cpus = true; 330 } else { 331 guest_ncpus = 1; 332 explicit_cpus = false; 333 } 334 value = get_config_value("cores"); 335 if (value != NULL) 336 cpu_cores = parse_int_value("cores", value, 1, UINT16_MAX); 337 else 338 cpu_cores = 1; 339 value = get_config_value("threads"); 340 if (value != NULL) 341 cpu_threads = parse_int_value("threads", value, 1, UINT16_MAX); 342 else 343 cpu_threads = 1; 344 value = get_config_value("sockets"); 345 if (value != NULL) 346 cpu_sockets = parse_int_value("sockets", value, 1, UINT16_MAX); 347 else 348 cpu_sockets = guest_ncpus; 349 350 /* 351 * Compute sockets * cores * threads avoiding overflow. The 352 * range check above insures these are 16 bit values. 353 */ 354 ncpus = (uint64_t)cpu_sockets * cpu_cores * cpu_threads; 355 if (ncpus > UINT16_MAX) 356 errx(4, "Computed number of vCPUs too high: %ju", 357 (uintmax_t)ncpus); 358 359 if (explicit_cpus) { 360 if (guest_ncpus != (int)ncpus) 361 errx(4, "Topology (%d sockets, %d cores, %d threads) " 362 "does not match %d vCPUs", 363 cpu_sockets, cpu_cores, cpu_threads, 364 guest_ncpus); 365 } else 366 guest_ncpus = ncpus; 367 } 368 369 static int 370 pincpu_parse(const char *opt) 371 { 372 const char *value; 373 char *newval; 374 char key[16]; 375 int vcpu, pcpu; 376 377 if (sscanf(opt, "%d:%d", &vcpu, &pcpu) != 2) { 378 fprintf(stderr, "invalid format: %s\n", opt); 379 return (-1); 380 } 381 382 if (vcpu < 0) { 383 fprintf(stderr, "invalid vcpu '%d'\n", vcpu); 384 return (-1); 385 } 386 387 if (pcpu < 0 || pcpu >= CPU_SETSIZE) { 388 fprintf(stderr, "hostcpu '%d' outside valid range from " 389 "0 to %d\n", pcpu, CPU_SETSIZE - 1); 390 return (-1); 391 } 392 393 snprintf(key, sizeof(key), "vcpu.%d.cpuset", vcpu); 394 value = get_config_value(key); 395 396 if (asprintf(&newval, "%s%s%d", value != NULL ? value : "", 397 value != NULL ? "," : "", pcpu) == -1) { 398 perror("failed to build new cpuset string"); 399 return (-1); 400 } 401 402 set_config_value(key, newval); 403 free(newval); 404 return (0); 405 } 406 407 static void 408 parse_cpuset(int vcpu, const char *list, cpuset_t *set) 409 { 410 char *cp, *token; 411 int pcpu, start; 412 413 CPU_ZERO(set); 414 start = -1; 415 token = __DECONST(char *, list); 416 for (;;) { 417 pcpu = strtoul(token, &cp, 0); 418 if (cp == token) 419 errx(4, "invalid cpuset for vcpu %d: '%s'", vcpu, list); 420 if (pcpu < 0 || pcpu >= CPU_SETSIZE) 421 errx(4, "hostcpu '%d' outside valid range from 0 to %d", 422 pcpu, CPU_SETSIZE - 1); 423 switch (*cp) { 424 case ',': 425 case '\0': 426 if (start >= 0) { 427 if (start > pcpu) 428 errx(4, "Invalid hostcpu range %d-%d", 429 start, pcpu); 430 while (start < pcpu) { 431 CPU_SET(start, set); 432 start++; 433 } 434 start = -1; 435 } 436 CPU_SET(pcpu, set); 437 break; 438 case '-': 439 if (start >= 0) 440 errx(4, "invalid cpuset for vcpu %d: '%s'", 441 vcpu, list); 442 start = pcpu; 443 break; 444 default: 445 errx(4, "invalid cpuset for vcpu %d: '%s'", vcpu, list); 446 } 447 if (*cp == '\0') 448 break; 449 token = cp + 1; 450 } 451 } 452 453 static void 454 build_vcpumaps(void) 455 { 456 char key[16]; 457 const char *value; 458 int vcpu; 459 460 vcpumap = calloc(guest_ncpus, sizeof(*vcpumap)); 461 for (vcpu = 0; vcpu < guest_ncpus; vcpu++) { 462 snprintf(key, sizeof(key), "vcpu.%d.cpuset", vcpu); 463 value = get_config_value(key); 464 if (value == NULL) 465 continue; 466 vcpumap[vcpu] = malloc(sizeof(cpuset_t)); 467 if (vcpumap[vcpu] == NULL) 468 err(4, "Failed to allocate cpuset for vcpu %d", vcpu); 469 parse_cpuset(vcpu, value, vcpumap[vcpu]); 470 } 471 } 472 473 void 474 vm_inject_fault(struct vcpu *vcpu, int vector, int errcode_valid, 475 int errcode) 476 { 477 int error, restart_instruction; 478 479 restart_instruction = 1; 480 481 error = vm_inject_exception(vcpu, vector, errcode_valid, errcode, 482 restart_instruction); 483 assert(error == 0); 484 } 485 486 void * 487 paddr_guest2host(struct vmctx *ctx, uintptr_t gaddr, size_t len) 488 { 489 490 return (vm_map_gpa(ctx, gaddr, len)); 491 } 492 493 #ifdef BHYVE_SNAPSHOT 494 uintptr_t 495 paddr_host2guest(struct vmctx *ctx, void *addr) 496 { 497 return (vm_rev_map_gpa(ctx, addr)); 498 } 499 #endif 500 501 int 502 fbsdrun_virtio_msix(void) 503 { 504 505 return (get_config_bool_default("virtio_msix", true)); 506 } 507 508 static void * 509 fbsdrun_start_thread(void *param) 510 { 511 char tname[MAXCOMLEN + 1]; 512 struct vcpu_info *vi = param; 513 int error; 514 515 snprintf(tname, sizeof(tname), "vcpu %d", vi->vcpuid); 516 pthread_set_name_np(pthread_self(), tname); 517 518 if (vcpumap[vi->vcpuid] != NULL) { 519 error = pthread_setaffinity_np(pthread_self(), 520 sizeof(cpuset_t), vcpumap[vi->vcpuid]); 521 assert(error == 0); 522 } 523 524 #ifdef BHYVE_SNAPSHOT 525 checkpoint_cpu_add(vi->vcpuid); 526 #endif 527 gdb_cpu_add(vi->vcpu); 528 529 vm_loop(vi->ctx, vi->vcpu); 530 531 /* not reached */ 532 exit(1); 533 return (NULL); 534 } 535 536 static void 537 fbsdrun_addcpu(struct vcpu_info *vi) 538 { 539 pthread_t thr; 540 int error; 541 542 error = vm_activate_cpu(vi->vcpu); 543 if (error != 0) 544 err(EX_OSERR, "could not activate CPU %d", vi->vcpuid); 545 546 CPU_SET_ATOMIC(vi->vcpuid, &cpumask); 547 548 vm_suspend_cpu(vi->vcpu); 549 550 error = pthread_create(&thr, NULL, fbsdrun_start_thread, vi); 551 assert(error == 0); 552 } 553 554 static int 555 fbsdrun_deletecpu(int vcpu) 556 { 557 558 if (!CPU_ISSET(vcpu, &cpumask)) { 559 fprintf(stderr, "Attempting to delete unknown cpu %d\n", vcpu); 560 exit(4); 561 } 562 563 CPU_CLR_ATOMIC(vcpu, &cpumask); 564 return (CPU_EMPTY(&cpumask)); 565 } 566 567 static int 568 vmexit_handle_notify(struct vmctx *ctx __unused, struct vcpu *vcpu __unused, 569 struct vm_exit *vme __unused, uint32_t eax __unused) 570 { 571 #if BHYVE_DEBUG 572 /* 573 * put guest-driven debug here 574 */ 575 #endif 576 return (VMEXIT_CONTINUE); 577 } 578 579 static int 580 vmexit_inout(struct vmctx *ctx, struct vcpu *vcpu, struct vm_run *vmrun) 581 { 582 struct vm_exit *vme; 583 int error; 584 int bytes, port, in, out; 585 586 vme = vmrun->vm_exit; 587 port = vme->u.inout.port; 588 bytes = vme->u.inout.bytes; 589 in = vme->u.inout.in; 590 out = !in; 591 592 /* Extra-special case of host notifications */ 593 if (out && port == GUEST_NIO_PORT) { 594 error = vmexit_handle_notify(ctx, vcpu, vme, vme->u.inout.eax); 595 return (error); 596 } 597 598 error = emulate_inout(ctx, vcpu, vme); 599 if (error) { 600 fprintf(stderr, "Unhandled %s%c 0x%04x at 0x%lx\n", 601 in ? "in" : "out", 602 bytes == 1 ? 'b' : (bytes == 2 ? 'w' : 'l'), 603 port, vme->rip); 604 return (VMEXIT_ABORT); 605 } else { 606 return (VMEXIT_CONTINUE); 607 } 608 } 609 610 static int 611 vmexit_rdmsr(struct vmctx *ctx __unused, struct vcpu *vcpu, 612 struct vm_run *vmrun) 613 { 614 struct vm_exit *vme; 615 uint64_t val; 616 uint32_t eax, edx; 617 int error; 618 619 vme = vmrun->vm_exit; 620 621 val = 0; 622 error = emulate_rdmsr(vcpu, vme->u.msr.code, &val); 623 if (error != 0) { 624 fprintf(stderr, "rdmsr to register %#x on vcpu %d\n", 625 vme->u.msr.code, vcpu_id(vcpu)); 626 if (get_config_bool("x86.strictmsr")) { 627 vm_inject_gp(vcpu); 628 return (VMEXIT_CONTINUE); 629 } 630 } 631 632 eax = val; 633 error = vm_set_register(vcpu, VM_REG_GUEST_RAX, eax); 634 assert(error == 0); 635 636 edx = val >> 32; 637 error = vm_set_register(vcpu, VM_REG_GUEST_RDX, edx); 638 assert(error == 0); 639 640 return (VMEXIT_CONTINUE); 641 } 642 643 static int 644 vmexit_wrmsr(struct vmctx *ctx __unused, struct vcpu *vcpu, 645 struct vm_run *vmrun) 646 { 647 struct vm_exit *vme; 648 int error; 649 650 vme = vmrun->vm_exit; 651 652 error = emulate_wrmsr(vcpu, vme->u.msr.code, vme->u.msr.wval); 653 if (error != 0) { 654 fprintf(stderr, "wrmsr to register %#x(%#lx) on vcpu %d\n", 655 vme->u.msr.code, vme->u.msr.wval, vcpu_id(vcpu)); 656 if (get_config_bool("x86.strictmsr")) { 657 vm_inject_gp(vcpu); 658 return (VMEXIT_CONTINUE); 659 } 660 } 661 return (VMEXIT_CONTINUE); 662 } 663 664 #define DEBUG_EPT_MISCONFIG 665 #ifdef DEBUG_EPT_MISCONFIG 666 #define VMCS_GUEST_PHYSICAL_ADDRESS 0x00002400 667 668 static uint64_t ept_misconfig_gpa, ept_misconfig_pte[4]; 669 static int ept_misconfig_ptenum; 670 #endif 671 672 static const char * 673 vmexit_vmx_desc(uint32_t exit_reason) 674 { 675 676 if (exit_reason >= nitems(vmx_exit_reason_desc) || 677 vmx_exit_reason_desc[exit_reason] == NULL) 678 return ("Unknown"); 679 return (vmx_exit_reason_desc[exit_reason]); 680 } 681 682 static int 683 vmexit_vmx(struct vmctx *ctx, struct vcpu *vcpu, struct vm_run *vmrun) 684 { 685 struct vm_exit *vme; 686 687 vme = vmrun->vm_exit; 688 689 fprintf(stderr, "vm exit[%d]\n", vcpu_id(vcpu)); 690 fprintf(stderr, "\treason\t\tVMX\n"); 691 fprintf(stderr, "\trip\t\t0x%016lx\n", vme->rip); 692 fprintf(stderr, "\tinst_length\t%d\n", vme->inst_length); 693 fprintf(stderr, "\tstatus\t\t%d\n", vme->u.vmx.status); 694 fprintf(stderr, "\texit_reason\t%u (%s)\n", vme->u.vmx.exit_reason, 695 vmexit_vmx_desc(vme->u.vmx.exit_reason)); 696 fprintf(stderr, "\tqualification\t0x%016lx\n", 697 vme->u.vmx.exit_qualification); 698 fprintf(stderr, "\tinst_type\t\t%d\n", vme->u.vmx.inst_type); 699 fprintf(stderr, "\tinst_error\t\t%d\n", vme->u.vmx.inst_error); 700 #ifdef DEBUG_EPT_MISCONFIG 701 if (vme->u.vmx.exit_reason == EXIT_REASON_EPT_MISCONFIG) { 702 vm_get_register(vcpu, 703 VMCS_IDENT(VMCS_GUEST_PHYSICAL_ADDRESS), 704 &ept_misconfig_gpa); 705 vm_get_gpa_pmap(ctx, ept_misconfig_gpa, ept_misconfig_pte, 706 &ept_misconfig_ptenum); 707 fprintf(stderr, "\tEPT misconfiguration:\n"); 708 fprintf(stderr, "\t\tGPA: %#lx\n", ept_misconfig_gpa); 709 fprintf(stderr, "\t\tPTE(%d): %#lx %#lx %#lx %#lx\n", 710 ept_misconfig_ptenum, ept_misconfig_pte[0], 711 ept_misconfig_pte[1], ept_misconfig_pte[2], 712 ept_misconfig_pte[3]); 713 } 714 #endif /* DEBUG_EPT_MISCONFIG */ 715 return (VMEXIT_ABORT); 716 } 717 718 static int 719 vmexit_svm(struct vmctx *ctx __unused, struct vcpu *vcpu, struct vm_run *vmrun) 720 { 721 struct vm_exit *vme; 722 723 vme = vmrun->vm_exit; 724 725 fprintf(stderr, "vm exit[%d]\n", vcpu_id(vcpu)); 726 fprintf(stderr, "\treason\t\tSVM\n"); 727 fprintf(stderr, "\trip\t\t0x%016lx\n", vme->rip); 728 fprintf(stderr, "\tinst_length\t%d\n", vme->inst_length); 729 fprintf(stderr, "\texitcode\t%#lx\n", vme->u.svm.exitcode); 730 fprintf(stderr, "\texitinfo1\t%#lx\n", vme->u.svm.exitinfo1); 731 fprintf(stderr, "\texitinfo2\t%#lx\n", vme->u.svm.exitinfo2); 732 return (VMEXIT_ABORT); 733 } 734 735 static int 736 vmexit_bogus(struct vmctx *ctx __unused, struct vcpu *vcpu __unused, 737 struct vm_run *vmrun) 738 { 739 assert(vmrun->vm_exit->inst_length == 0); 740 741 return (VMEXIT_CONTINUE); 742 } 743 744 static int 745 vmexit_reqidle(struct vmctx *ctx __unused, struct vcpu *vcpu __unused, 746 struct vm_run *vmrun) 747 { 748 assert(vmrun->vm_exit->inst_length == 0); 749 750 return (VMEXIT_CONTINUE); 751 } 752 753 static int 754 vmexit_hlt(struct vmctx *ctx __unused, struct vcpu *vcpu __unused, 755 struct vm_run *vmrun __unused) 756 { 757 /* 758 * Just continue execution with the next instruction. We use 759 * the HLT VM exit as a way to be friendly with the host 760 * scheduler. 761 */ 762 return (VMEXIT_CONTINUE); 763 } 764 765 static int 766 vmexit_pause(struct vmctx *ctx __unused, struct vcpu *vcpu __unused, 767 struct vm_run *vmrun __unused) 768 { 769 return (VMEXIT_CONTINUE); 770 } 771 772 static int 773 vmexit_mtrap(struct vmctx *ctx __unused, struct vcpu *vcpu, 774 struct vm_run *vmrun) 775 { 776 assert(vmrun->vm_exit->inst_length == 0); 777 778 #ifdef BHYVE_SNAPSHOT 779 checkpoint_cpu_suspend(vcpu_id(vcpu)); 780 #endif 781 gdb_cpu_mtrap(vcpu); 782 #ifdef BHYVE_SNAPSHOT 783 checkpoint_cpu_resume(vcpu_id(vcpu)); 784 #endif 785 786 return (VMEXIT_CONTINUE); 787 } 788 789 static int 790 vmexit_inst_emul(struct vmctx *ctx __unused, struct vcpu *vcpu, 791 struct vm_run *vmrun) 792 { 793 struct vm_exit *vme; 794 struct vie *vie; 795 int err, i, cs_d; 796 enum vm_cpu_mode mode; 797 798 vme = vmrun->vm_exit; 799 800 vie = &vme->u.inst_emul.vie; 801 if (!vie->decoded) { 802 /* 803 * Attempt to decode in userspace as a fallback. This allows 804 * updating instruction decode in bhyve without rebooting the 805 * kernel (rapid prototyping), albeit with much slower 806 * emulation. 807 */ 808 vie_restart(vie); 809 mode = vme->u.inst_emul.paging.cpu_mode; 810 cs_d = vme->u.inst_emul.cs_d; 811 if (vmm_decode_instruction(mode, cs_d, vie) != 0) 812 goto fail; 813 if (vm_set_register(vcpu, VM_REG_GUEST_RIP, 814 vme->rip + vie->num_processed) != 0) 815 goto fail; 816 } 817 818 err = emulate_mem(vcpu, vme->u.inst_emul.gpa, vie, 819 &vme->u.inst_emul.paging); 820 if (err) { 821 if (err == ESRCH) { 822 EPRINTLN("Unhandled memory access to 0x%lx\n", 823 vme->u.inst_emul.gpa); 824 } 825 goto fail; 826 } 827 828 return (VMEXIT_CONTINUE); 829 830 fail: 831 fprintf(stderr, "Failed to emulate instruction sequence [ "); 832 for (i = 0; i < vie->num_valid; i++) 833 fprintf(stderr, "%02x", vie->inst[i]); 834 FPRINTLN(stderr, " ] at 0x%lx", vme->rip); 835 return (VMEXIT_ABORT); 836 } 837 838 static pthread_mutex_t resetcpu_mtx = PTHREAD_MUTEX_INITIALIZER; 839 static pthread_cond_t resetcpu_cond = PTHREAD_COND_INITIALIZER; 840 841 static int 842 vmexit_suspend(struct vmctx *ctx, struct vcpu *vcpu, struct vm_run *vmrun) 843 { 844 struct vm_exit *vme; 845 enum vm_suspend_how how; 846 int vcpuid = vcpu_id(vcpu); 847 848 vme = vmrun->vm_exit; 849 850 how = vme->u.suspended.how; 851 852 fbsdrun_deletecpu(vcpuid); 853 854 if (vcpuid != BSP) { 855 pthread_mutex_lock(&resetcpu_mtx); 856 pthread_cond_signal(&resetcpu_cond); 857 pthread_mutex_unlock(&resetcpu_mtx); 858 pthread_exit(NULL); 859 } 860 861 pthread_mutex_lock(&resetcpu_mtx); 862 while (!CPU_EMPTY(&cpumask)) { 863 pthread_cond_wait(&resetcpu_cond, &resetcpu_mtx); 864 } 865 pthread_mutex_unlock(&resetcpu_mtx); 866 867 switch (how) { 868 case VM_SUSPEND_RESET: 869 exit(0); 870 case VM_SUSPEND_POWEROFF: 871 if (get_config_bool_default("destroy_on_poweroff", false)) 872 vm_destroy(ctx); 873 exit(1); 874 case VM_SUSPEND_HALT: 875 exit(2); 876 case VM_SUSPEND_TRIPLEFAULT: 877 exit(3); 878 default: 879 fprintf(stderr, "vmexit_suspend: invalid reason %d\n", how); 880 exit(100); 881 } 882 return (0); /* NOTREACHED */ 883 } 884 885 static int 886 vmexit_debug(struct vmctx *ctx __unused, struct vcpu *vcpu, 887 struct vm_run *vmrun __unused) 888 { 889 890 #ifdef BHYVE_SNAPSHOT 891 checkpoint_cpu_suspend(vcpu_id(vcpu)); 892 #endif 893 gdb_cpu_suspend(vcpu); 894 #ifdef BHYVE_SNAPSHOT 895 checkpoint_cpu_resume(vcpu_id(vcpu)); 896 #endif 897 /* 898 * XXX-MJ sleep for a short period to avoid chewing up the CPU in the 899 * window between activation of the vCPU thread and the STARTUP IPI. 900 */ 901 usleep(1000); 902 return (VMEXIT_CONTINUE); 903 } 904 905 static int 906 vmexit_breakpoint(struct vmctx *ctx __unused, struct vcpu *vcpu, 907 struct vm_run *vmrun) 908 { 909 gdb_cpu_breakpoint(vcpu, vmrun->vm_exit); 910 return (VMEXIT_CONTINUE); 911 } 912 913 static int 914 vmexit_ipi(struct vmctx *ctx __unused, struct vcpu *vcpu __unused, 915 struct vm_run *vmrun) 916 { 917 struct vm_exit *vme; 918 cpuset_t *dmask; 919 int error = -1; 920 int i; 921 922 dmask = vmrun->cpuset; 923 vme = vmrun->vm_exit; 924 925 switch (vme->u.ipi.mode) { 926 case APIC_DELMODE_INIT: 927 CPU_FOREACH_ISSET(i, dmask) { 928 error = vm_suspend_cpu(vcpu_info[i].vcpu); 929 if (error) { 930 warnx("%s: failed to suspend cpu %d\n", 931 __func__, i); 932 break; 933 } 934 } 935 break; 936 case APIC_DELMODE_STARTUP: 937 CPU_FOREACH_ISSET(i, dmask) { 938 spinup_ap(vcpu_info[i].vcpu, 939 vme->u.ipi.vector << PAGE_SHIFT); 940 } 941 error = 0; 942 break; 943 default: 944 break; 945 } 946 947 return (error); 948 } 949 950 static vmexit_handler_t handler[VM_EXITCODE_MAX] = { 951 [VM_EXITCODE_INOUT] = vmexit_inout, 952 [VM_EXITCODE_INOUT_STR] = vmexit_inout, 953 [VM_EXITCODE_VMX] = vmexit_vmx, 954 [VM_EXITCODE_SVM] = vmexit_svm, 955 [VM_EXITCODE_BOGUS] = vmexit_bogus, 956 [VM_EXITCODE_REQIDLE] = vmexit_reqidle, 957 [VM_EXITCODE_RDMSR] = vmexit_rdmsr, 958 [VM_EXITCODE_WRMSR] = vmexit_wrmsr, 959 [VM_EXITCODE_MTRAP] = vmexit_mtrap, 960 [VM_EXITCODE_INST_EMUL] = vmexit_inst_emul, 961 [VM_EXITCODE_SUSPENDED] = vmexit_suspend, 962 [VM_EXITCODE_TASK_SWITCH] = vmexit_task_switch, 963 [VM_EXITCODE_DEBUG] = vmexit_debug, 964 [VM_EXITCODE_BPT] = vmexit_breakpoint, 965 [VM_EXITCODE_IPI] = vmexit_ipi, 966 }; 967 968 static void 969 vm_loop(struct vmctx *ctx, struct vcpu *vcpu) 970 { 971 struct vm_exit vme; 972 struct vm_run vmrun; 973 int error, rc; 974 enum vm_exitcode exitcode; 975 cpuset_t active_cpus, dmask; 976 977 error = vm_active_cpus(ctx, &active_cpus); 978 assert(CPU_ISSET(vcpu_id(vcpu), &active_cpus)); 979 980 vmrun.vm_exit = &vme; 981 vmrun.cpuset = &dmask; 982 vmrun.cpusetsize = sizeof(dmask); 983 984 while (1) { 985 error = vm_run(vcpu, &vmrun); 986 if (error != 0) 987 break; 988 989 exitcode = vme.exitcode; 990 if (exitcode >= VM_EXITCODE_MAX || handler[exitcode] == NULL) { 991 fprintf(stderr, "vm_loop: unexpected exitcode 0x%x\n", 992 exitcode); 993 exit(4); 994 } 995 996 rc = (*handler[exitcode])(ctx, vcpu, &vmrun); 997 998 switch (rc) { 999 case VMEXIT_CONTINUE: 1000 break; 1001 case VMEXIT_ABORT: 1002 abort(); 1003 default: 1004 exit(4); 1005 } 1006 } 1007 fprintf(stderr, "vm_run error %d, errno %d\n", error, errno); 1008 } 1009 1010 static int 1011 num_vcpus_allowed(struct vmctx *ctx, struct vcpu *vcpu) 1012 { 1013 uint16_t sockets, cores, threads, maxcpus; 1014 int tmp, error; 1015 1016 /* 1017 * The guest is allowed to spinup more than one processor only if the 1018 * UNRESTRICTED_GUEST capability is available. 1019 */ 1020 error = vm_get_capability(vcpu, VM_CAP_UNRESTRICTED_GUEST, &tmp); 1021 if (error != 0) 1022 return (1); 1023 1024 error = vm_get_topology(ctx, &sockets, &cores, &threads, &maxcpus); 1025 if (error == 0) 1026 return (maxcpus); 1027 else 1028 return (1); 1029 } 1030 1031 static void 1032 fbsdrun_set_capabilities(struct vcpu *vcpu, bool bsp) 1033 { 1034 int err, tmp; 1035 1036 if (get_config_bool_default("x86.vmexit_on_hlt", false)) { 1037 err = vm_get_capability(vcpu, VM_CAP_HALT_EXIT, &tmp); 1038 if (err < 0) { 1039 fprintf(stderr, "VM exit on HLT not supported\n"); 1040 exit(4); 1041 } 1042 vm_set_capability(vcpu, VM_CAP_HALT_EXIT, 1); 1043 if (bsp) 1044 handler[VM_EXITCODE_HLT] = vmexit_hlt; 1045 } 1046 1047 if (get_config_bool_default("x86.vmexit_on_pause", false)) { 1048 /* 1049 * pause exit support required for this mode 1050 */ 1051 err = vm_get_capability(vcpu, VM_CAP_PAUSE_EXIT, &tmp); 1052 if (err < 0) { 1053 fprintf(stderr, 1054 "SMP mux requested, no pause support\n"); 1055 exit(4); 1056 } 1057 vm_set_capability(vcpu, VM_CAP_PAUSE_EXIT, 1); 1058 if (bsp) 1059 handler[VM_EXITCODE_PAUSE] = vmexit_pause; 1060 } 1061 1062 if (get_config_bool_default("x86.x2apic", false)) 1063 err = vm_set_x2apic_state(vcpu, X2APIC_ENABLED); 1064 else 1065 err = vm_set_x2apic_state(vcpu, X2APIC_DISABLED); 1066 1067 if (err) { 1068 fprintf(stderr, "Unable to set x2apic state (%d)\n", err); 1069 exit(4); 1070 } 1071 1072 vm_set_capability(vcpu, VM_CAP_ENABLE_INVPCID, 1); 1073 1074 err = vm_set_capability(vcpu, VM_CAP_IPI_EXIT, 1); 1075 assert(err == 0); 1076 } 1077 1078 static struct vmctx * 1079 do_open(const char *vmname) 1080 { 1081 struct vmctx *ctx; 1082 int error; 1083 bool reinit, romboot; 1084 1085 reinit = romboot = false; 1086 1087 if (lpc_bootrom()) 1088 romboot = true; 1089 1090 error = vm_create(vmname); 1091 if (error) { 1092 if (errno == EEXIST) { 1093 if (romboot) { 1094 reinit = true; 1095 } else { 1096 /* 1097 * The virtual machine has been setup by the 1098 * userspace bootloader. 1099 */ 1100 } 1101 } else { 1102 perror("vm_create"); 1103 exit(4); 1104 } 1105 } else { 1106 if (!romboot) { 1107 /* 1108 * If the virtual machine was just created then a 1109 * bootrom must be configured to boot it. 1110 */ 1111 fprintf(stderr, "virtual machine cannot be booted\n"); 1112 exit(4); 1113 } 1114 } 1115 1116 ctx = vm_open(vmname); 1117 if (ctx == NULL) { 1118 perror("vm_open"); 1119 exit(4); 1120 } 1121 1122 #ifndef WITHOUT_CAPSICUM 1123 if (vm_limit_rights(ctx) != 0) 1124 err(EX_OSERR, "vm_limit_rights"); 1125 #endif 1126 1127 if (reinit) { 1128 error = vm_reinit(ctx); 1129 if (error) { 1130 perror("vm_reinit"); 1131 exit(4); 1132 } 1133 } 1134 error = vm_set_topology(ctx, cpu_sockets, cpu_cores, cpu_threads, 0); 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 struct qemu_fwcfg_item *e820_fwcfg_item; 1246 uint64_t rip; 1247 size_t memsize; 1248 const char *optstr, *value, *vmname; 1249 #ifdef BHYVE_SNAPSHOT 1250 char *restore_file; 1251 struct restore_state rstate; 1252 1253 restore_file = NULL; 1254 #endif 1255 1256 init_config(); 1257 set_defaults(); 1258 progname = basename(argv[0]); 1259 1260 #ifdef BHYVE_SNAPSHOT 1261 optstr = "aehuwxACDHIPSWYk:f:o:p:G:c:s:m:l:K:U:r:"; 1262 #else 1263 optstr = "aehuwxACDHIPSWYk:f:o:p:G:c:s:m:l:K:U:"; 1264 #endif 1265 while ((c = getopt(argc, argv, optstr)) != -1) { 1266 switch (c) { 1267 case 'a': 1268 set_config_bool("x86.x2apic", false); 1269 break; 1270 case 'A': 1271 set_config_bool("acpi_tables", true); 1272 break; 1273 case 'D': 1274 set_config_bool("destroy_on_poweroff", true); 1275 break; 1276 case 'p': 1277 if (pincpu_parse(optarg) != 0) { 1278 errx(EX_USAGE, "invalid vcpu pinning " 1279 "configuration '%s'", optarg); 1280 } 1281 break; 1282 case 'c': 1283 if (topology_parse(optarg) != 0) { 1284 errx(EX_USAGE, "invalid cpu topology " 1285 "'%s'", optarg); 1286 } 1287 break; 1288 case 'C': 1289 set_config_bool("memory.guest_in_core", true); 1290 break; 1291 case 'f': 1292 if (qemu_fwcfg_parse_cmdline_arg(optarg) != 0) { 1293 errx(EX_USAGE, "invalid fwcfg item '%s'", optarg); 1294 } 1295 break; 1296 case 'G': 1297 parse_gdb_options(optarg); 1298 break; 1299 case 'k': 1300 parse_simple_config_file(optarg); 1301 break; 1302 case 'K': 1303 set_config_value("keyboard.layout", optarg); 1304 break; 1305 case 'l': 1306 if (strncmp(optarg, "help", strlen(optarg)) == 0) { 1307 lpc_print_supported_devices(); 1308 exit(0); 1309 } else if (lpc_device_parse(optarg) != 0) { 1310 errx(EX_USAGE, "invalid lpc device " 1311 "configuration '%s'", optarg); 1312 } 1313 break; 1314 #ifdef BHYVE_SNAPSHOT 1315 case 'r': 1316 restore_file = optarg; 1317 break; 1318 #endif 1319 case 's': 1320 if (strncmp(optarg, "help", strlen(optarg)) == 0) { 1321 pci_print_supported_devices(); 1322 exit(0); 1323 } else if (pci_parse_slot(optarg) != 0) 1324 exit(4); 1325 else 1326 break; 1327 case 'S': 1328 set_config_bool("memory.wired", true); 1329 break; 1330 case 'm': 1331 set_config_value("memory.size", optarg); 1332 break; 1333 case 'o': 1334 if (!parse_config_option(optarg)) 1335 errx(EX_USAGE, "invalid configuration option '%s'", optarg); 1336 break; 1337 case 'H': 1338 set_config_bool("x86.vmexit_on_hlt", true); 1339 break; 1340 case 'I': 1341 /* 1342 * The "-I" option was used to add an ioapic to the 1343 * virtual machine. 1344 * 1345 * An ioapic is now provided unconditionally for each 1346 * virtual machine and this option is now deprecated. 1347 */ 1348 break; 1349 case 'P': 1350 set_config_bool("x86.vmexit_on_pause", true); 1351 break; 1352 case 'e': 1353 set_config_bool("x86.strictio", true); 1354 break; 1355 case 'u': 1356 set_config_bool("rtc.use_localtime", false); 1357 break; 1358 case 'U': 1359 set_config_value("uuid", optarg); 1360 break; 1361 case 'w': 1362 set_config_bool("x86.strictmsr", false); 1363 break; 1364 case 'W': 1365 set_config_bool("virtio_msix", false); 1366 break; 1367 case 'x': 1368 set_config_bool("x86.x2apic", true); 1369 break; 1370 case 'Y': 1371 set_config_bool("x86.mptable", false); 1372 break; 1373 case 'h': 1374 usage(0); 1375 default: 1376 usage(1); 1377 } 1378 } 1379 argc -= optind; 1380 argv += optind; 1381 1382 if (argc > 1) 1383 usage(1); 1384 1385 #ifdef BHYVE_SNAPSHOT 1386 if (restore_file != NULL) { 1387 error = load_restore_file(restore_file, &rstate); 1388 if (error) { 1389 fprintf(stderr, "Failed to read checkpoint info from " 1390 "file: '%s'.\n", restore_file); 1391 exit(1); 1392 } 1393 vmname = lookup_vmname(&rstate); 1394 if (vmname != NULL) 1395 set_config_value("name", vmname); 1396 } 1397 #endif 1398 1399 if (argc == 1) 1400 set_config_value("name", argv[0]); 1401 1402 vmname = get_config_value("name"); 1403 if (vmname == NULL) 1404 usage(1); 1405 1406 if (get_config_bool_default("config.dump", false)) { 1407 dump_config(); 1408 exit(1); 1409 } 1410 1411 calc_topology(); 1412 build_vcpumaps(); 1413 1414 value = get_config_value("memory.size"); 1415 error = vm_parse_memsize(value, &memsize); 1416 if (error) 1417 errx(EX_USAGE, "invalid memsize '%s'", value); 1418 1419 ctx = do_open(vmname); 1420 1421 #ifdef BHYVE_SNAPSHOT 1422 if (restore_file != NULL) { 1423 guest_ncpus = lookup_guest_ncpus(&rstate); 1424 memflags = lookup_memflags(&rstate); 1425 memsize = lookup_memsize(&rstate); 1426 } 1427 1428 if (guest_ncpus < 1) { 1429 fprintf(stderr, "Invalid guest vCPUs (%d)\n", guest_ncpus); 1430 exit(1); 1431 } 1432 #endif 1433 1434 bsp = vm_vcpu_open(ctx, BSP); 1435 max_vcpus = num_vcpus_allowed(ctx, bsp); 1436 if (guest_ncpus > max_vcpus) { 1437 fprintf(stderr, "%d vCPUs requested but only %d available\n", 1438 guest_ncpus, max_vcpus); 1439 exit(4); 1440 } 1441 1442 fbsdrun_set_capabilities(bsp, true); 1443 1444 /* Allocate per-VCPU resources. */ 1445 vcpu_info = calloc(guest_ncpus, sizeof(*vcpu_info)); 1446 for (int vcpuid = 0; vcpuid < guest_ncpus; vcpuid++) { 1447 vcpu_info[vcpuid].ctx = ctx; 1448 vcpu_info[vcpuid].vcpuid = vcpuid; 1449 if (vcpuid == BSP) 1450 vcpu_info[vcpuid].vcpu = bsp; 1451 else 1452 vcpu_info[vcpuid].vcpu = vm_vcpu_open(ctx, vcpuid); 1453 } 1454 1455 memflags = 0; 1456 if (get_config_bool_default("memory.wired", false)) 1457 memflags |= VM_MEM_F_WIRED; 1458 if (get_config_bool_default("memory.guest_in_core", false)) 1459 memflags |= VM_MEM_F_INCORE; 1460 vm_set_memflags(ctx, memflags); 1461 error = vm_setup_memory(ctx, memsize, VM_MMAP_ALL); 1462 if (error) { 1463 fprintf(stderr, "Unable to setup memory (%d)\n", errno); 1464 exit(4); 1465 } 1466 1467 error = init_msr(); 1468 if (error) { 1469 fprintf(stderr, "init_msr error %d", error); 1470 exit(4); 1471 } 1472 1473 init_mem(guest_ncpus); 1474 init_inout(); 1475 kernemu_dev_init(); 1476 init_bootrom(ctx); 1477 atkbdc_init(ctx); 1478 pci_irq_init(ctx); 1479 ioapic_init(ctx); 1480 1481 rtc_init(ctx); 1482 sci_init(ctx); 1483 1484 if (qemu_fwcfg_init(ctx) != 0) { 1485 fprintf(stderr, "qemu fwcfg initialization error"); 1486 exit(4); 1487 } 1488 1489 if (qemu_fwcfg_add_file("opt/bhyve/hw.ncpu", sizeof(guest_ncpus), 1490 &guest_ncpus) != 0) { 1491 fprintf(stderr, "Could not add qemu fwcfg opt/bhyve/hw.ncpu"); 1492 exit(4); 1493 } 1494 1495 if (e820_init(ctx) != 0) { 1496 fprintf(stderr, "Unable to setup E820"); 1497 exit(4); 1498 } 1499 1500 /* 1501 * Exit if a device emulation finds an error in its initialization 1502 */ 1503 if (init_pci(ctx) != 0) { 1504 perror("device emulation initialization error"); 1505 exit(4); 1506 } 1507 1508 /* 1509 * Initialize after PCI, to allow a bootrom file to reserve the high 1510 * region. 1511 */ 1512 if (get_config_bool("acpi_tables")) 1513 vmgenc_init(ctx); 1514 1515 init_gdb(ctx); 1516 1517 if (lpc_bootrom()) { 1518 if (vm_set_capability(bsp, VM_CAP_UNRESTRICTED_GUEST, 1)) { 1519 fprintf(stderr, "ROM boot failed: unrestricted guest " 1520 "capability not available\n"); 1521 exit(4); 1522 } 1523 error = vcpu_reset(bsp); 1524 assert(error == 0); 1525 } 1526 1527 /* 1528 * Add all vCPUs. 1529 */ 1530 for (int vcpuid = 0; vcpuid < guest_ncpus; vcpuid++) 1531 spinup_vcpu(&vcpu_info[vcpuid], vcpuid == BSP); 1532 1533 #ifdef BHYVE_SNAPSHOT 1534 if (restore_file != NULL) { 1535 fprintf(stdout, "Pausing pci devs...\r\n"); 1536 if (vm_pause_user_devs() != 0) { 1537 fprintf(stderr, "Failed to pause PCI device state.\n"); 1538 exit(1); 1539 } 1540 1541 fprintf(stdout, "Restoring vm mem...\r\n"); 1542 if (restore_vm_mem(ctx, &rstate) != 0) { 1543 fprintf(stderr, "Failed to restore VM memory.\n"); 1544 exit(1); 1545 } 1546 1547 fprintf(stdout, "Restoring pci devs...\r\n"); 1548 if (vm_restore_user_devs(&rstate) != 0) { 1549 fprintf(stderr, "Failed to restore PCI device state.\n"); 1550 exit(1); 1551 } 1552 1553 fprintf(stdout, "Restoring kernel structs...\r\n"); 1554 if (vm_restore_kern_structs(ctx, &rstate) != 0) { 1555 fprintf(stderr, "Failed to restore kernel structs.\n"); 1556 exit(1); 1557 } 1558 1559 fprintf(stdout, "Resuming pci devs...\r\n"); 1560 if (vm_resume_user_devs() != 0) { 1561 fprintf(stderr, "Failed to resume PCI device state.\n"); 1562 exit(1); 1563 } 1564 } 1565 #endif 1566 1567 error = vm_get_register(bsp, VM_REG_GUEST_RIP, &rip); 1568 assert(error == 0); 1569 1570 /* 1571 * build the guest tables, MP etc. 1572 */ 1573 if (get_config_bool_default("x86.mptable", true)) { 1574 error = mptable_build(ctx, guest_ncpus); 1575 if (error) { 1576 perror("error to build the guest tables"); 1577 exit(4); 1578 } 1579 } 1580 1581 error = smbios_build(ctx); 1582 if (error != 0) 1583 exit(4); 1584 1585 if (get_config_bool("acpi_tables")) { 1586 error = acpi_build(ctx, guest_ncpus); 1587 assert(error == 0); 1588 } 1589 1590 e820_fwcfg_item = e820_get_fwcfg_item(); 1591 if (e820_fwcfg_item == NULL) { 1592 fprintf(stderr, "invalid e820 table"); 1593 exit(4); 1594 } 1595 if (qemu_fwcfg_add_file("etc/e820", e820_fwcfg_item->size, 1596 e820_fwcfg_item->data) != 0) { 1597 fprintf(stderr, "could not add qemu fwcfg etc/e820"); 1598 exit(4); 1599 } 1600 free(e820_fwcfg_item); 1601 1602 if (lpc_bootrom() && strcmp(lpc_fwcfg(), "bhyve") == 0) { 1603 fwctl_init(); 1604 } 1605 1606 /* 1607 * Change the proc title to include the VM name. 1608 */ 1609 setproctitle("%s", vmname); 1610 1611 #ifdef BHYVE_SNAPSHOT 1612 /* initialize mutex/cond variables */ 1613 init_snapshot(); 1614 1615 /* 1616 * checkpointing thread for communication with bhyvectl 1617 */ 1618 if (init_checkpoint_thread(ctx) != 0) 1619 errx(EX_OSERR, "Failed to start checkpoint thread"); 1620 #endif 1621 1622 #ifndef WITHOUT_CAPSICUM 1623 caph_cache_catpages(); 1624 1625 if (caph_limit_stdout() == -1 || caph_limit_stderr() == -1) 1626 errx(EX_OSERR, "Unable to apply rights for sandbox"); 1627 1628 if (caph_enter() == -1) 1629 errx(EX_OSERR, "cap_enter() failed"); 1630 #endif 1631 1632 #ifdef BHYVE_SNAPSHOT 1633 if (restore_file != NULL) { 1634 destroy_restore_state(&rstate); 1635 if (vm_restore_time(ctx) < 0) 1636 err(EX_OSERR, "Unable to restore time"); 1637 1638 for (int vcpuid = 0; vcpuid < guest_ncpus; vcpuid++) 1639 vm_resume_cpu(vcpu_info[vcpuid].vcpu); 1640 } else 1641 #endif 1642 vm_resume_cpu(bsp); 1643 1644 /* 1645 * Head off to the main event dispatch loop 1646 */ 1647 mevent_dispatch(); 1648 1649 exit(4); 1650 } 1651