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 29 #include <sys/cdefs.h> 30 #include <sys/types.h> 31 #ifndef WITHOUT_CAPSICUM 32 #include <sys/capsicum.h> 33 #endif 34 #include <sys/mman.h> 35 #ifdef BHYVE_SNAPSHOT 36 #include <sys/socket.h> 37 #include <sys/stat.h> 38 #endif 39 #include <sys/time.h> 40 #ifdef BHYVE_SNAPSHOT 41 #include <sys/un.h> 42 #endif 43 44 #include <amd64/vmm/intel/vmcs.h> 45 #include <x86/apicreg.h> 46 47 #include <machine/atomic.h> 48 #include <machine/segments.h> 49 50 #ifndef WITHOUT_CAPSICUM 51 #include <capsicum_helpers.h> 52 #endif 53 #include <stdio.h> 54 #include <stdlib.h> 55 #include <string.h> 56 #include <err.h> 57 #include <errno.h> 58 #ifdef BHYVE_SNAPSHOT 59 #include <fcntl.h> 60 #endif 61 #include <libgen.h> 62 #include <unistd.h> 63 #include <assert.h> 64 #include <pthread.h> 65 #include <pthread_np.h> 66 #include <sysexits.h> 67 #include <stdbool.h> 68 #include <stdint.h> 69 #ifdef BHYVE_SNAPSHOT 70 #include <ucl.h> 71 #include <unistd.h> 72 73 #include <libxo/xo.h> 74 #endif 75 76 #include <machine/vmm.h> 77 #ifndef WITHOUT_CAPSICUM 78 #include <machine/vmm_dev.h> 79 #endif 80 #include <machine/vmm_instruction_emul.h> 81 #include <vmmapi.h> 82 83 #include "bhyverun.h" 84 #include "acpi.h" 85 #include "atkbdc.h" 86 #include "bootrom.h" 87 #include "config.h" 88 #include "inout.h" 89 #include "debug.h" 90 #include "e820.h" 91 #include "fwctl.h" 92 #include "gdb.h" 93 #include "ioapic.h" 94 #include "kernemu_dev.h" 95 #include "mem.h" 96 #include "mevent.h" 97 #include "mptbl.h" 98 #include "pci_emul.h" 99 #include "pci_irq.h" 100 #include "pci_lpc.h" 101 #include "qemu_fwcfg.h" 102 #include "smbiostbl.h" 103 #ifdef BHYVE_SNAPSHOT 104 #include "snapshot.h" 105 #endif 106 #include "tpm_device.h" 107 #include "xmsr.h" 108 #include "spinup_ap.h" 109 #include "rtc.h" 110 #include "vmgenc.h" 111 112 #define MB (1024UL * 1024) 113 #define GB (1024UL * MB) 114 115 static const char * const vmx_exit_reason_desc[] = { 116 [EXIT_REASON_EXCEPTION] = "Exception or non-maskable interrupt (NMI)", 117 [EXIT_REASON_EXT_INTR] = "External interrupt", 118 [EXIT_REASON_TRIPLE_FAULT] = "Triple fault", 119 [EXIT_REASON_INIT] = "INIT signal", 120 [EXIT_REASON_SIPI] = "Start-up IPI (SIPI)", 121 [EXIT_REASON_IO_SMI] = "I/O system-management interrupt (SMI)", 122 [EXIT_REASON_SMI] = "Other SMI", 123 [EXIT_REASON_INTR_WINDOW] = "Interrupt window", 124 [EXIT_REASON_NMI_WINDOW] = "NMI window", 125 [EXIT_REASON_TASK_SWITCH] = "Task switch", 126 [EXIT_REASON_CPUID] = "CPUID", 127 [EXIT_REASON_GETSEC] = "GETSEC", 128 [EXIT_REASON_HLT] = "HLT", 129 [EXIT_REASON_INVD] = "INVD", 130 [EXIT_REASON_INVLPG] = "INVLPG", 131 [EXIT_REASON_RDPMC] = "RDPMC", 132 [EXIT_REASON_RDTSC] = "RDTSC", 133 [EXIT_REASON_RSM] = "RSM", 134 [EXIT_REASON_VMCALL] = "VMCALL", 135 [EXIT_REASON_VMCLEAR] = "VMCLEAR", 136 [EXIT_REASON_VMLAUNCH] = "VMLAUNCH", 137 [EXIT_REASON_VMPTRLD] = "VMPTRLD", 138 [EXIT_REASON_VMPTRST] = "VMPTRST", 139 [EXIT_REASON_VMREAD] = "VMREAD", 140 [EXIT_REASON_VMRESUME] = "VMRESUME", 141 [EXIT_REASON_VMWRITE] = "VMWRITE", 142 [EXIT_REASON_VMXOFF] = "VMXOFF", 143 [EXIT_REASON_VMXON] = "VMXON", 144 [EXIT_REASON_CR_ACCESS] = "Control-register accesses", 145 [EXIT_REASON_DR_ACCESS] = "MOV DR", 146 [EXIT_REASON_INOUT] = "I/O instruction", 147 [EXIT_REASON_RDMSR] = "RDMSR", 148 [EXIT_REASON_WRMSR] = "WRMSR", 149 [EXIT_REASON_INVAL_VMCS] = 150 "VM-entry failure due to invalid guest state", 151 [EXIT_REASON_INVAL_MSR] = "VM-entry failure due to MSR loading", 152 [EXIT_REASON_MWAIT] = "MWAIT", 153 [EXIT_REASON_MTF] = "Monitor trap flag", 154 [EXIT_REASON_MONITOR] = "MONITOR", 155 [EXIT_REASON_PAUSE] = "PAUSE", 156 [EXIT_REASON_MCE_DURING_ENTRY] = 157 "VM-entry failure due to machine-check event", 158 [EXIT_REASON_TPR] = "TPR below threshold", 159 [EXIT_REASON_APIC_ACCESS] = "APIC access", 160 [EXIT_REASON_VIRTUALIZED_EOI] = "Virtualized EOI", 161 [EXIT_REASON_GDTR_IDTR] = "Access to GDTR or IDTR", 162 [EXIT_REASON_LDTR_TR] = "Access to LDTR or TR", 163 [EXIT_REASON_EPT_FAULT] = "EPT violation", 164 [EXIT_REASON_EPT_MISCONFIG] = "EPT misconfiguration", 165 [EXIT_REASON_INVEPT] = "INVEPT", 166 [EXIT_REASON_RDTSCP] = "RDTSCP", 167 [EXIT_REASON_VMX_PREEMPT] = "VMX-preemption timer expired", 168 [EXIT_REASON_INVVPID] = "INVVPID", 169 [EXIT_REASON_WBINVD] = "WBINVD", 170 [EXIT_REASON_XSETBV] = "XSETBV", 171 [EXIT_REASON_APIC_WRITE] = "APIC write", 172 [EXIT_REASON_RDRAND] = "RDRAND", 173 [EXIT_REASON_INVPCID] = "INVPCID", 174 [EXIT_REASON_VMFUNC] = "VMFUNC", 175 [EXIT_REASON_ENCLS] = "ENCLS", 176 [EXIT_REASON_RDSEED] = "RDSEED", 177 [EXIT_REASON_PM_LOG_FULL] = "Page-modification log full", 178 [EXIT_REASON_XSAVES] = "XSAVES", 179 [EXIT_REASON_XRSTORS] = "XRSTORS" 180 }; 181 182 typedef int (*vmexit_handler_t)(struct vmctx *, struct vcpu *, struct vm_run *); 183 184 int guest_ncpus; 185 uint16_t cpu_cores, cpu_sockets, cpu_threads; 186 187 int raw_stdio = 0; 188 189 static char *progname; 190 static const int BSP = 0; 191 192 static cpuset_t cpumask; 193 194 static void vm_loop(struct vmctx *ctx, struct vcpu *vcpu); 195 196 static struct vcpu_info { 197 struct vmctx *ctx; 198 struct vcpu *vcpu; 199 int vcpuid; 200 } *vcpu_info; 201 202 static cpuset_t **vcpumap; 203 204 static void 205 usage(int code) 206 { 207 208 fprintf(stderr, 209 "Usage: %s [-AaCDeHhPSuWwxY]\n" 210 " %*s [-c [[cpus=]numcpus][,sockets=n][,cores=n][,threads=n]]\n" 211 " %*s [-G port] [-k config_file] [-l lpc] [-m mem] [-o var=value]\n" 212 " %*s [-p vcpu:hostcpu] [-r file] [-s pci] [-U uuid] vmname\n" 213 " -A: create ACPI tables\n" 214 " -a: local apic is in xAPIC mode (deprecated)\n" 215 " -C: include guest memory in core file\n" 216 " -c: number of CPUs and/or topology specification\n" 217 " -D: destroy on power-off\n" 218 " -e: exit on unhandled I/O access\n" 219 " -G: start a debug server\n" 220 " -H: vmexit from the guest on HLT\n" 221 " -h: help\n" 222 " -k: key=value flat config file\n" 223 " -K: PS2 keyboard layout\n" 224 " -l: LPC device configuration\n" 225 " -m: memory size\n" 226 " -o: set config 'var' to 'value'\n" 227 " -P: vmexit from the guest on pause\n" 228 " -p: pin 'vcpu' to 'hostcpu'\n" 229 #ifdef BHYVE_SNAPSHOT 230 " -r: path to checkpoint file\n" 231 #endif 232 " -S: guest memory cannot be swapped\n" 233 " -s: <slot,driver,configinfo> PCI slot config\n" 234 " -U: UUID\n" 235 " -u: RTC keeps UTC time\n" 236 " -W: force virtio to use single-vector MSI\n" 237 " -w: ignore unimplemented MSRs\n" 238 " -x: local APIC is in x2APIC mode\n" 239 " -Y: disable MPtable generation\n", 240 progname, (int)strlen(progname), "", (int)strlen(progname), "", 241 (int)strlen(progname), ""); 242 243 exit(code); 244 } 245 246 /* 247 * XXX This parser is known to have the following issues: 248 * 1. It accepts null key=value tokens ",," as setting "cpus" to an 249 * empty string. 250 * 251 * The acceptance of a null specification ('-c ""') is by design to match the 252 * manual page syntax specification, this results in a topology of 1 vCPU. 253 */ 254 static int 255 topology_parse(const char *opt) 256 { 257 char *cp, *str, *tofree; 258 259 if (*opt == '\0') { 260 set_config_value("sockets", "1"); 261 set_config_value("cores", "1"); 262 set_config_value("threads", "1"); 263 set_config_value("cpus", "1"); 264 return (0); 265 } 266 267 tofree = str = strdup(opt); 268 if (str == NULL) 269 errx(4, "Failed to allocate memory"); 270 271 while ((cp = strsep(&str, ",")) != NULL) { 272 if (strncmp(cp, "cpus=", strlen("cpus=")) == 0) 273 set_config_value("cpus", cp + strlen("cpus=")); 274 else if (strncmp(cp, "sockets=", strlen("sockets=")) == 0) 275 set_config_value("sockets", cp + strlen("sockets=")); 276 else if (strncmp(cp, "cores=", strlen("cores=")) == 0) 277 set_config_value("cores", cp + strlen("cores=")); 278 else if (strncmp(cp, "threads=", strlen("threads=")) == 0) 279 set_config_value("threads", cp + strlen("threads=")); 280 else if (strchr(cp, '=') != NULL) 281 goto out; 282 else 283 set_config_value("cpus", cp); 284 } 285 free(tofree); 286 return (0); 287 288 out: 289 free(tofree); 290 return (-1); 291 } 292 293 static int 294 parse_int_value(const char *key, const char *value, int minval, int maxval) 295 { 296 char *cp; 297 long lval; 298 299 errno = 0; 300 lval = strtol(value, &cp, 0); 301 if (errno != 0 || *cp != '\0' || cp == value || lval < minval || 302 lval > maxval) 303 errx(4, "Invalid value for %s: '%s'", key, value); 304 return (lval); 305 } 306 307 /* 308 * Set the sockets, cores, threads, and guest_cpus variables based on 309 * the configured topology. 310 * 311 * The limits of UINT16_MAX are due to the types passed to 312 * vm_set_topology(). vmm.ko may enforce tighter limits. 313 */ 314 static void 315 calc_topology(void) 316 { 317 const char *value; 318 bool explicit_cpus; 319 uint64_t ncpus; 320 321 value = get_config_value("cpus"); 322 if (value != NULL) { 323 guest_ncpus = parse_int_value("cpus", value, 1, UINT16_MAX); 324 explicit_cpus = true; 325 } else { 326 guest_ncpus = 1; 327 explicit_cpus = false; 328 } 329 value = get_config_value("cores"); 330 if (value != NULL) 331 cpu_cores = parse_int_value("cores", value, 1, UINT16_MAX); 332 else 333 cpu_cores = 1; 334 value = get_config_value("threads"); 335 if (value != NULL) 336 cpu_threads = parse_int_value("threads", value, 1, UINT16_MAX); 337 else 338 cpu_threads = 1; 339 value = get_config_value("sockets"); 340 if (value != NULL) 341 cpu_sockets = parse_int_value("sockets", value, 1, UINT16_MAX); 342 else 343 cpu_sockets = guest_ncpus; 344 345 /* 346 * Compute sockets * cores * threads avoiding overflow. The 347 * range check above insures these are 16 bit values. 348 */ 349 ncpus = (uint64_t)cpu_sockets * cpu_cores * cpu_threads; 350 if (ncpus > UINT16_MAX) 351 errx(4, "Computed number of vCPUs too high: %ju", 352 (uintmax_t)ncpus); 353 354 if (explicit_cpus) { 355 if (guest_ncpus != (int)ncpus) 356 errx(4, "Topology (%d sockets, %d cores, %d threads) " 357 "does not match %d vCPUs", 358 cpu_sockets, cpu_cores, cpu_threads, 359 guest_ncpus); 360 } else 361 guest_ncpus = ncpus; 362 } 363 364 static int 365 pincpu_parse(const char *opt) 366 { 367 const char *value; 368 char *newval; 369 char key[16]; 370 int vcpu, pcpu; 371 372 if (sscanf(opt, "%d:%d", &vcpu, &pcpu) != 2) { 373 fprintf(stderr, "invalid format: %s\n", opt); 374 return (-1); 375 } 376 377 if (vcpu < 0) { 378 fprintf(stderr, "invalid vcpu '%d'\n", vcpu); 379 return (-1); 380 } 381 382 if (pcpu < 0 || pcpu >= CPU_SETSIZE) { 383 fprintf(stderr, "hostcpu '%d' outside valid range from " 384 "0 to %d\n", pcpu, CPU_SETSIZE - 1); 385 return (-1); 386 } 387 388 snprintf(key, sizeof(key), "vcpu.%d.cpuset", vcpu); 389 value = get_config_value(key); 390 391 if (asprintf(&newval, "%s%s%d", value != NULL ? value : "", 392 value != NULL ? "," : "", pcpu) == -1) { 393 perror("failed to build new cpuset string"); 394 return (-1); 395 } 396 397 set_config_value(key, newval); 398 free(newval); 399 return (0); 400 } 401 402 static void 403 parse_cpuset(int vcpu, const char *list, cpuset_t *set) 404 { 405 char *cp, *token; 406 int pcpu, start; 407 408 CPU_ZERO(set); 409 start = -1; 410 token = __DECONST(char *, list); 411 for (;;) { 412 pcpu = strtoul(token, &cp, 0); 413 if (cp == token) 414 errx(4, "invalid cpuset for vcpu %d: '%s'", vcpu, list); 415 if (pcpu < 0 || pcpu >= CPU_SETSIZE) 416 errx(4, "hostcpu '%d' outside valid range from 0 to %d", 417 pcpu, CPU_SETSIZE - 1); 418 switch (*cp) { 419 case ',': 420 case '\0': 421 if (start >= 0) { 422 if (start > pcpu) 423 errx(4, "Invalid hostcpu range %d-%d", 424 start, pcpu); 425 while (start < pcpu) { 426 CPU_SET(start, set); 427 start++; 428 } 429 start = -1; 430 } 431 CPU_SET(pcpu, set); 432 break; 433 case '-': 434 if (start >= 0) 435 errx(4, "invalid cpuset for vcpu %d: '%s'", 436 vcpu, list); 437 start = pcpu; 438 break; 439 default: 440 errx(4, "invalid cpuset for vcpu %d: '%s'", vcpu, list); 441 } 442 if (*cp == '\0') 443 break; 444 token = cp + 1; 445 } 446 } 447 448 static void 449 build_vcpumaps(void) 450 { 451 char key[16]; 452 const char *value; 453 int vcpu; 454 455 vcpumap = calloc(guest_ncpus, sizeof(*vcpumap)); 456 for (vcpu = 0; vcpu < guest_ncpus; vcpu++) { 457 snprintf(key, sizeof(key), "vcpu.%d.cpuset", vcpu); 458 value = get_config_value(key); 459 if (value == NULL) 460 continue; 461 vcpumap[vcpu] = malloc(sizeof(cpuset_t)); 462 if (vcpumap[vcpu] == NULL) 463 err(4, "Failed to allocate cpuset for vcpu %d", vcpu); 464 parse_cpuset(vcpu, value, vcpumap[vcpu]); 465 } 466 } 467 468 void 469 vm_inject_fault(struct vcpu *vcpu, int vector, int errcode_valid, 470 int errcode) 471 { 472 int error, restart_instruction; 473 474 restart_instruction = 1; 475 476 error = vm_inject_exception(vcpu, vector, errcode_valid, errcode, 477 restart_instruction); 478 assert(error == 0); 479 } 480 481 void * 482 paddr_guest2host(struct vmctx *ctx, uintptr_t gaddr, size_t len) 483 { 484 485 return (vm_map_gpa(ctx, gaddr, len)); 486 } 487 488 #ifdef BHYVE_SNAPSHOT 489 uintptr_t 490 paddr_host2guest(struct vmctx *ctx, void *addr) 491 { 492 return (vm_rev_map_gpa(ctx, addr)); 493 } 494 #endif 495 496 int 497 fbsdrun_virtio_msix(void) 498 { 499 500 return (get_config_bool_default("virtio_msix", true)); 501 } 502 503 static void * 504 fbsdrun_start_thread(void *param) 505 { 506 char tname[MAXCOMLEN + 1]; 507 struct vcpu_info *vi = param; 508 int error; 509 510 snprintf(tname, sizeof(tname), "vcpu %d", vi->vcpuid); 511 pthread_set_name_np(pthread_self(), tname); 512 513 if (vcpumap[vi->vcpuid] != NULL) { 514 error = pthread_setaffinity_np(pthread_self(), 515 sizeof(cpuset_t), vcpumap[vi->vcpuid]); 516 assert(error == 0); 517 } 518 519 #ifdef BHYVE_SNAPSHOT 520 checkpoint_cpu_add(vi->vcpuid); 521 #endif 522 gdb_cpu_add(vi->vcpu); 523 524 vm_loop(vi->ctx, vi->vcpu); 525 526 /* not reached */ 527 exit(1); 528 return (NULL); 529 } 530 531 static void 532 fbsdrun_addcpu(struct vcpu_info *vi) 533 { 534 pthread_t thr; 535 int error; 536 537 error = vm_activate_cpu(vi->vcpu); 538 if (error != 0) 539 err(EX_OSERR, "could not activate CPU %d", vi->vcpuid); 540 541 CPU_SET_ATOMIC(vi->vcpuid, &cpumask); 542 543 vm_suspend_cpu(vi->vcpu); 544 545 error = pthread_create(&thr, NULL, fbsdrun_start_thread, vi); 546 assert(error == 0); 547 } 548 549 static void 550 fbsdrun_deletecpu(int vcpu) 551 { 552 static pthread_mutex_t resetcpu_mtx = PTHREAD_MUTEX_INITIALIZER; 553 static pthread_cond_t resetcpu_cond = PTHREAD_COND_INITIALIZER; 554 555 pthread_mutex_lock(&resetcpu_mtx); 556 if (!CPU_ISSET(vcpu, &cpumask)) { 557 fprintf(stderr, "Attempting to delete unknown cpu %d\n", vcpu); 558 exit(4); 559 } 560 561 CPU_CLR(vcpu, &cpumask); 562 563 if (vcpu != BSP) { 564 pthread_cond_signal(&resetcpu_cond); 565 pthread_mutex_unlock(&resetcpu_mtx); 566 pthread_exit(NULL); 567 /* NOTREACHED */ 568 } 569 570 while (!CPU_EMPTY(&cpumask)) { 571 pthread_cond_wait(&resetcpu_cond, &resetcpu_mtx); 572 } 573 pthread_mutex_unlock(&resetcpu_mtx); 574 } 575 576 static int 577 vmexit_inout(struct vmctx *ctx, struct vcpu *vcpu, struct vm_run *vmrun) 578 { 579 struct vm_exit *vme; 580 int error; 581 int bytes, port, in; 582 583 vme = vmrun->vm_exit; 584 port = vme->u.inout.port; 585 bytes = vme->u.inout.bytes; 586 in = vme->u.inout.in; 587 588 error = emulate_inout(ctx, vcpu, vme); 589 if (error) { 590 fprintf(stderr, "Unhandled %s%c 0x%04x at 0x%lx\n", 591 in ? "in" : "out", 592 bytes == 1 ? 'b' : (bytes == 2 ? 'w' : 'l'), 593 port, vme->rip); 594 return (VMEXIT_ABORT); 595 } else { 596 return (VMEXIT_CONTINUE); 597 } 598 } 599 600 static int 601 vmexit_rdmsr(struct vmctx *ctx __unused, struct vcpu *vcpu, 602 struct vm_run *vmrun) 603 { 604 struct vm_exit *vme; 605 uint64_t val; 606 uint32_t eax, edx; 607 int error; 608 609 vme = vmrun->vm_exit; 610 611 val = 0; 612 error = emulate_rdmsr(vcpu, vme->u.msr.code, &val); 613 if (error != 0) { 614 fprintf(stderr, "rdmsr to register %#x on vcpu %d\n", 615 vme->u.msr.code, vcpu_id(vcpu)); 616 if (get_config_bool("x86.strictmsr")) { 617 vm_inject_gp(vcpu); 618 return (VMEXIT_CONTINUE); 619 } 620 } 621 622 eax = val; 623 error = vm_set_register(vcpu, VM_REG_GUEST_RAX, eax); 624 assert(error == 0); 625 626 edx = val >> 32; 627 error = vm_set_register(vcpu, VM_REG_GUEST_RDX, edx); 628 assert(error == 0); 629 630 return (VMEXIT_CONTINUE); 631 } 632 633 static int 634 vmexit_wrmsr(struct vmctx *ctx __unused, struct vcpu *vcpu, 635 struct vm_run *vmrun) 636 { 637 struct vm_exit *vme; 638 int error; 639 640 vme = vmrun->vm_exit; 641 642 error = emulate_wrmsr(vcpu, vme->u.msr.code, vme->u.msr.wval); 643 if (error != 0) { 644 fprintf(stderr, "wrmsr to register %#x(%#lx) on vcpu %d\n", 645 vme->u.msr.code, vme->u.msr.wval, vcpu_id(vcpu)); 646 if (get_config_bool("x86.strictmsr")) { 647 vm_inject_gp(vcpu); 648 return (VMEXIT_CONTINUE); 649 } 650 } 651 return (VMEXIT_CONTINUE); 652 } 653 654 #define DEBUG_EPT_MISCONFIG 655 #ifdef DEBUG_EPT_MISCONFIG 656 #define VMCS_GUEST_PHYSICAL_ADDRESS 0x00002400 657 658 static uint64_t ept_misconfig_gpa, ept_misconfig_pte[4]; 659 static int ept_misconfig_ptenum; 660 #endif 661 662 static const char * 663 vmexit_vmx_desc(uint32_t exit_reason) 664 { 665 666 if (exit_reason >= nitems(vmx_exit_reason_desc) || 667 vmx_exit_reason_desc[exit_reason] == NULL) 668 return ("Unknown"); 669 return (vmx_exit_reason_desc[exit_reason]); 670 } 671 672 static int 673 vmexit_vmx(struct vmctx *ctx, struct vcpu *vcpu, struct vm_run *vmrun) 674 { 675 struct vm_exit *vme; 676 677 vme = vmrun->vm_exit; 678 679 fprintf(stderr, "vm exit[%d]\n", vcpu_id(vcpu)); 680 fprintf(stderr, "\treason\t\tVMX\n"); 681 fprintf(stderr, "\trip\t\t0x%016lx\n", vme->rip); 682 fprintf(stderr, "\tinst_length\t%d\n", vme->inst_length); 683 fprintf(stderr, "\tstatus\t\t%d\n", vme->u.vmx.status); 684 fprintf(stderr, "\texit_reason\t%u (%s)\n", vme->u.vmx.exit_reason, 685 vmexit_vmx_desc(vme->u.vmx.exit_reason)); 686 fprintf(stderr, "\tqualification\t0x%016lx\n", 687 vme->u.vmx.exit_qualification); 688 fprintf(stderr, "\tinst_type\t\t%d\n", vme->u.vmx.inst_type); 689 fprintf(stderr, "\tinst_error\t\t%d\n", vme->u.vmx.inst_error); 690 #ifdef DEBUG_EPT_MISCONFIG 691 if (vme->u.vmx.exit_reason == EXIT_REASON_EPT_MISCONFIG) { 692 vm_get_register(vcpu, 693 VMCS_IDENT(VMCS_GUEST_PHYSICAL_ADDRESS), 694 &ept_misconfig_gpa); 695 vm_get_gpa_pmap(ctx, ept_misconfig_gpa, ept_misconfig_pte, 696 &ept_misconfig_ptenum); 697 fprintf(stderr, "\tEPT misconfiguration:\n"); 698 fprintf(stderr, "\t\tGPA: %#lx\n", ept_misconfig_gpa); 699 fprintf(stderr, "\t\tPTE(%d): %#lx %#lx %#lx %#lx\n", 700 ept_misconfig_ptenum, ept_misconfig_pte[0], 701 ept_misconfig_pte[1], ept_misconfig_pte[2], 702 ept_misconfig_pte[3]); 703 } 704 #endif /* DEBUG_EPT_MISCONFIG */ 705 return (VMEXIT_ABORT); 706 } 707 708 static int 709 vmexit_svm(struct vmctx *ctx __unused, struct vcpu *vcpu, struct vm_run *vmrun) 710 { 711 struct vm_exit *vme; 712 713 vme = vmrun->vm_exit; 714 715 fprintf(stderr, "vm exit[%d]\n", vcpu_id(vcpu)); 716 fprintf(stderr, "\treason\t\tSVM\n"); 717 fprintf(stderr, "\trip\t\t0x%016lx\n", vme->rip); 718 fprintf(stderr, "\tinst_length\t%d\n", vme->inst_length); 719 fprintf(stderr, "\texitcode\t%#lx\n", vme->u.svm.exitcode); 720 fprintf(stderr, "\texitinfo1\t%#lx\n", vme->u.svm.exitinfo1); 721 fprintf(stderr, "\texitinfo2\t%#lx\n", vme->u.svm.exitinfo2); 722 return (VMEXIT_ABORT); 723 } 724 725 static int 726 vmexit_bogus(struct vmctx *ctx __unused, struct vcpu *vcpu __unused, 727 struct vm_run *vmrun) 728 { 729 assert(vmrun->vm_exit->inst_length == 0); 730 731 return (VMEXIT_CONTINUE); 732 } 733 734 static int 735 vmexit_reqidle(struct vmctx *ctx __unused, struct vcpu *vcpu __unused, 736 struct vm_run *vmrun) 737 { 738 assert(vmrun->vm_exit->inst_length == 0); 739 740 return (VMEXIT_CONTINUE); 741 } 742 743 static int 744 vmexit_hlt(struct vmctx *ctx __unused, struct vcpu *vcpu __unused, 745 struct vm_run *vmrun __unused) 746 { 747 /* 748 * Just continue execution with the next instruction. We use 749 * the HLT VM exit as a way to be friendly with the host 750 * scheduler. 751 */ 752 return (VMEXIT_CONTINUE); 753 } 754 755 static int 756 vmexit_pause(struct vmctx *ctx __unused, struct vcpu *vcpu __unused, 757 struct vm_run *vmrun __unused) 758 { 759 return (VMEXIT_CONTINUE); 760 } 761 762 static int 763 vmexit_mtrap(struct vmctx *ctx __unused, struct vcpu *vcpu, 764 struct vm_run *vmrun) 765 { 766 assert(vmrun->vm_exit->inst_length == 0); 767 768 #ifdef BHYVE_SNAPSHOT 769 checkpoint_cpu_suspend(vcpu_id(vcpu)); 770 #endif 771 gdb_cpu_mtrap(vcpu); 772 #ifdef BHYVE_SNAPSHOT 773 checkpoint_cpu_resume(vcpu_id(vcpu)); 774 #endif 775 776 return (VMEXIT_CONTINUE); 777 } 778 779 static int 780 vmexit_inst_emul(struct vmctx *ctx __unused, struct vcpu *vcpu, 781 struct vm_run *vmrun) 782 { 783 struct vm_exit *vme; 784 struct vie *vie; 785 int err, i, cs_d; 786 enum vm_cpu_mode mode; 787 788 vme = vmrun->vm_exit; 789 790 vie = &vme->u.inst_emul.vie; 791 if (!vie->decoded) { 792 /* 793 * Attempt to decode in userspace as a fallback. This allows 794 * updating instruction decode in bhyve without rebooting the 795 * kernel (rapid prototyping), albeit with much slower 796 * emulation. 797 */ 798 vie_restart(vie); 799 mode = vme->u.inst_emul.paging.cpu_mode; 800 cs_d = vme->u.inst_emul.cs_d; 801 if (vmm_decode_instruction(mode, cs_d, vie) != 0) 802 goto fail; 803 if (vm_set_register(vcpu, VM_REG_GUEST_RIP, 804 vme->rip + vie->num_processed) != 0) 805 goto fail; 806 } 807 808 err = emulate_mem(vcpu, vme->u.inst_emul.gpa, vie, 809 &vme->u.inst_emul.paging); 810 if (err) { 811 if (err == ESRCH) { 812 EPRINTLN("Unhandled memory access to 0x%lx\n", 813 vme->u.inst_emul.gpa); 814 } 815 goto fail; 816 } 817 818 return (VMEXIT_CONTINUE); 819 820 fail: 821 fprintf(stderr, "Failed to emulate instruction sequence [ "); 822 for (i = 0; i < vie->num_valid; i++) 823 fprintf(stderr, "%02x", vie->inst[i]); 824 FPRINTLN(stderr, " ] at 0x%lx", vme->rip); 825 return (VMEXIT_ABORT); 826 } 827 828 static int 829 vmexit_suspend(struct vmctx *ctx, struct vcpu *vcpu, struct vm_run *vmrun) 830 { 831 struct vm_exit *vme; 832 enum vm_suspend_how how; 833 int vcpuid = vcpu_id(vcpu); 834 835 vme = vmrun->vm_exit; 836 837 how = vme->u.suspended.how; 838 839 fbsdrun_deletecpu(vcpuid); 840 841 switch (how) { 842 case VM_SUSPEND_RESET: 843 exit(0); 844 case VM_SUSPEND_POWEROFF: 845 if (get_config_bool_default("destroy_on_poweroff", false)) 846 vm_destroy(ctx); 847 exit(1); 848 case VM_SUSPEND_HALT: 849 exit(2); 850 case VM_SUSPEND_TRIPLEFAULT: 851 exit(3); 852 default: 853 fprintf(stderr, "vmexit_suspend: invalid reason %d\n", how); 854 exit(100); 855 } 856 return (0); /* NOTREACHED */ 857 } 858 859 static int 860 vmexit_debug(struct vmctx *ctx __unused, struct vcpu *vcpu, 861 struct vm_run *vmrun __unused) 862 { 863 864 #ifdef BHYVE_SNAPSHOT 865 checkpoint_cpu_suspend(vcpu_id(vcpu)); 866 #endif 867 gdb_cpu_suspend(vcpu); 868 #ifdef BHYVE_SNAPSHOT 869 checkpoint_cpu_resume(vcpu_id(vcpu)); 870 #endif 871 /* 872 * XXX-MJ sleep for a short period to avoid chewing up the CPU in the 873 * window between activation of the vCPU thread and the STARTUP IPI. 874 */ 875 usleep(1000); 876 return (VMEXIT_CONTINUE); 877 } 878 879 static int 880 vmexit_breakpoint(struct vmctx *ctx __unused, struct vcpu *vcpu, 881 struct vm_run *vmrun) 882 { 883 gdb_cpu_breakpoint(vcpu, vmrun->vm_exit); 884 return (VMEXIT_CONTINUE); 885 } 886 887 static int 888 vmexit_ipi(struct vmctx *ctx __unused, struct vcpu *vcpu __unused, 889 struct vm_run *vmrun) 890 { 891 struct vm_exit *vme; 892 cpuset_t *dmask; 893 int error = -1; 894 int i; 895 896 dmask = vmrun->cpuset; 897 vme = vmrun->vm_exit; 898 899 switch (vme->u.ipi.mode) { 900 case APIC_DELMODE_INIT: 901 CPU_FOREACH_ISSET(i, dmask) { 902 error = vm_suspend_cpu(vcpu_info[i].vcpu); 903 if (error) { 904 warnx("%s: failed to suspend cpu %d\n", 905 __func__, i); 906 break; 907 } 908 } 909 break; 910 case APIC_DELMODE_STARTUP: 911 CPU_FOREACH_ISSET(i, dmask) { 912 spinup_ap(vcpu_info[i].vcpu, 913 vme->u.ipi.vector << PAGE_SHIFT); 914 } 915 error = 0; 916 break; 917 default: 918 break; 919 } 920 921 return (error); 922 } 923 924 static const vmexit_handler_t handler[VM_EXITCODE_MAX] = { 925 [VM_EXITCODE_INOUT] = vmexit_inout, 926 [VM_EXITCODE_INOUT_STR] = vmexit_inout, 927 [VM_EXITCODE_VMX] = vmexit_vmx, 928 [VM_EXITCODE_SVM] = vmexit_svm, 929 [VM_EXITCODE_BOGUS] = vmexit_bogus, 930 [VM_EXITCODE_REQIDLE] = vmexit_reqidle, 931 [VM_EXITCODE_RDMSR] = vmexit_rdmsr, 932 [VM_EXITCODE_WRMSR] = vmexit_wrmsr, 933 [VM_EXITCODE_MTRAP] = vmexit_mtrap, 934 [VM_EXITCODE_INST_EMUL] = vmexit_inst_emul, 935 [VM_EXITCODE_SUSPENDED] = vmexit_suspend, 936 [VM_EXITCODE_TASK_SWITCH] = vmexit_task_switch, 937 [VM_EXITCODE_DEBUG] = vmexit_debug, 938 [VM_EXITCODE_BPT] = vmexit_breakpoint, 939 [VM_EXITCODE_IPI] = vmexit_ipi, 940 [VM_EXITCODE_HLT] = vmexit_hlt, 941 [VM_EXITCODE_PAUSE] = vmexit_pause, 942 }; 943 944 static void 945 vm_loop(struct vmctx *ctx, struct vcpu *vcpu) 946 { 947 struct vm_exit vme; 948 struct vm_run vmrun; 949 int error, rc; 950 enum vm_exitcode exitcode; 951 cpuset_t active_cpus, dmask; 952 953 error = vm_active_cpus(ctx, &active_cpus); 954 assert(CPU_ISSET(vcpu_id(vcpu), &active_cpus)); 955 956 vmrun.vm_exit = &vme; 957 vmrun.cpuset = &dmask; 958 vmrun.cpusetsize = sizeof(dmask); 959 960 while (1) { 961 error = vm_run(vcpu, &vmrun); 962 if (error != 0) 963 break; 964 965 exitcode = vme.exitcode; 966 if (exitcode >= VM_EXITCODE_MAX || handler[exitcode] == NULL) { 967 fprintf(stderr, "vm_loop: unexpected exitcode 0x%x\n", 968 exitcode); 969 exit(4); 970 } 971 972 rc = (*handler[exitcode])(ctx, vcpu, &vmrun); 973 974 switch (rc) { 975 case VMEXIT_CONTINUE: 976 break; 977 case VMEXIT_ABORT: 978 abort(); 979 default: 980 exit(4); 981 } 982 } 983 fprintf(stderr, "vm_run error %d, errno %d\n", error, errno); 984 } 985 986 static int 987 num_vcpus_allowed(struct vmctx *ctx, struct vcpu *vcpu) 988 { 989 uint16_t sockets, cores, threads, maxcpus; 990 int tmp, error; 991 992 /* 993 * The guest is allowed to spinup more than one processor only if the 994 * UNRESTRICTED_GUEST capability is available. 995 */ 996 error = vm_get_capability(vcpu, VM_CAP_UNRESTRICTED_GUEST, &tmp); 997 if (error != 0) 998 return (1); 999 1000 error = vm_get_topology(ctx, &sockets, &cores, &threads, &maxcpus); 1001 if (error == 0) 1002 return (maxcpus); 1003 else 1004 return (1); 1005 } 1006 1007 static void 1008 fbsdrun_set_capabilities(struct vcpu *vcpu) 1009 { 1010 int err, tmp; 1011 1012 if (get_config_bool_default("x86.vmexit_on_hlt", false)) { 1013 err = vm_get_capability(vcpu, VM_CAP_HALT_EXIT, &tmp); 1014 if (err < 0) { 1015 fprintf(stderr, "VM exit on HLT not supported\n"); 1016 exit(4); 1017 } 1018 vm_set_capability(vcpu, VM_CAP_HALT_EXIT, 1); 1019 } 1020 1021 if (get_config_bool_default("x86.vmexit_on_pause", false)) { 1022 /* 1023 * pause exit support required for this mode 1024 */ 1025 err = vm_get_capability(vcpu, VM_CAP_PAUSE_EXIT, &tmp); 1026 if (err < 0) { 1027 fprintf(stderr, 1028 "SMP mux requested, no pause support\n"); 1029 exit(4); 1030 } 1031 vm_set_capability(vcpu, VM_CAP_PAUSE_EXIT, 1); 1032 } 1033 1034 if (get_config_bool_default("x86.x2apic", false)) 1035 err = vm_set_x2apic_state(vcpu, X2APIC_ENABLED); 1036 else 1037 err = vm_set_x2apic_state(vcpu, X2APIC_DISABLED); 1038 1039 if (err) { 1040 fprintf(stderr, "Unable to set x2apic state (%d)\n", err); 1041 exit(4); 1042 } 1043 1044 vm_set_capability(vcpu, VM_CAP_ENABLE_INVPCID, 1); 1045 1046 err = vm_set_capability(vcpu, VM_CAP_IPI_EXIT, 1); 1047 assert(err == 0); 1048 } 1049 1050 static struct vmctx * 1051 do_open(const char *vmname) 1052 { 1053 struct vmctx *ctx; 1054 int error; 1055 bool reinit, romboot; 1056 1057 reinit = romboot = false; 1058 1059 if (lpc_bootrom()) 1060 romboot = true; 1061 1062 error = vm_create(vmname); 1063 if (error) { 1064 if (errno == EEXIST) { 1065 if (romboot) { 1066 reinit = true; 1067 } else { 1068 /* 1069 * The virtual machine has been setup by the 1070 * userspace bootloader. 1071 */ 1072 } 1073 } else { 1074 perror("vm_create"); 1075 exit(4); 1076 } 1077 } else { 1078 if (!romboot) { 1079 /* 1080 * If the virtual machine was just created then a 1081 * bootrom must be configured to boot it. 1082 */ 1083 fprintf(stderr, "virtual machine cannot be booted\n"); 1084 exit(4); 1085 } 1086 } 1087 1088 ctx = vm_open(vmname); 1089 if (ctx == NULL) { 1090 perror("vm_open"); 1091 exit(4); 1092 } 1093 1094 #ifndef WITHOUT_CAPSICUM 1095 if (vm_limit_rights(ctx) != 0) 1096 err(EX_OSERR, "vm_limit_rights"); 1097 #endif 1098 1099 if (reinit) { 1100 error = vm_reinit(ctx); 1101 if (error) { 1102 perror("vm_reinit"); 1103 exit(4); 1104 } 1105 } 1106 error = vm_set_topology(ctx, cpu_sockets, cpu_cores, cpu_threads, 0); 1107 if (error) 1108 errx(EX_OSERR, "vm_set_topology"); 1109 return (ctx); 1110 } 1111 1112 static void 1113 spinup_vcpu(struct vcpu_info *vi, bool bsp) 1114 { 1115 int error; 1116 1117 if (!bsp) { 1118 fbsdrun_set_capabilities(vi->vcpu); 1119 1120 /* 1121 * Enable the 'unrestricted guest' mode for APs. 1122 * 1123 * APs startup in power-on 16-bit mode. 1124 */ 1125 error = vm_set_capability(vi->vcpu, VM_CAP_UNRESTRICTED_GUEST, 1); 1126 assert(error == 0); 1127 } 1128 1129 fbsdrun_addcpu(vi); 1130 } 1131 1132 static bool 1133 parse_config_option(const char *option) 1134 { 1135 const char *value; 1136 char *path; 1137 1138 value = strchr(option, '='); 1139 if (value == NULL || value[1] == '\0') 1140 return (false); 1141 path = strndup(option, value - option); 1142 if (path == NULL) 1143 err(4, "Failed to allocate memory"); 1144 set_config_value(path, value + 1); 1145 return (true); 1146 } 1147 1148 static void 1149 parse_simple_config_file(const char *path) 1150 { 1151 FILE *fp; 1152 char *line, *cp; 1153 size_t linecap; 1154 unsigned int lineno; 1155 1156 fp = fopen(path, "r"); 1157 if (fp == NULL) 1158 err(4, "Failed to open configuration file %s", path); 1159 line = NULL; 1160 linecap = 0; 1161 lineno = 1; 1162 for (lineno = 1; getline(&line, &linecap, fp) > 0; lineno++) { 1163 if (*line == '#' || *line == '\n') 1164 continue; 1165 cp = strchr(line, '\n'); 1166 if (cp != NULL) 1167 *cp = '\0'; 1168 if (!parse_config_option(line)) 1169 errx(4, "%s line %u: invalid config option '%s'", path, 1170 lineno, line); 1171 } 1172 free(line); 1173 fclose(fp); 1174 } 1175 1176 static void 1177 parse_gdb_options(const char *opt) 1178 { 1179 const char *sport; 1180 char *colon; 1181 1182 if (opt[0] == 'w') { 1183 set_config_bool("gdb.wait", true); 1184 opt++; 1185 } 1186 1187 colon = strrchr(opt, ':'); 1188 if (colon == NULL) { 1189 sport = opt; 1190 } else { 1191 *colon = '\0'; 1192 colon++; 1193 sport = colon; 1194 set_config_value("gdb.address", opt); 1195 } 1196 1197 set_config_value("gdb.port", sport); 1198 } 1199 1200 static void 1201 set_defaults(void) 1202 { 1203 1204 set_config_bool("acpi_tables", false); 1205 set_config_value("memory.size", "256M"); 1206 set_config_bool("x86.strictmsr", true); 1207 set_config_value("lpc.fwcfg", "bhyve"); 1208 } 1209 1210 int 1211 main(int argc, char *argv[]) 1212 { 1213 int c, error; 1214 int max_vcpus, memflags; 1215 struct vcpu *bsp; 1216 struct vmctx *ctx; 1217 struct qemu_fwcfg_item *e820_fwcfg_item; 1218 size_t memsize; 1219 const char *optstr, *value, *vmname; 1220 #ifdef BHYVE_SNAPSHOT 1221 char *restore_file; 1222 struct restore_state rstate; 1223 1224 restore_file = NULL; 1225 #endif 1226 1227 init_config(); 1228 set_defaults(); 1229 progname = basename(argv[0]); 1230 1231 #ifdef BHYVE_SNAPSHOT 1232 optstr = "aehuwxACDHIPSWYk:f:o:p:G:c:s:m:l:K:U:r:"; 1233 #else 1234 optstr = "aehuwxACDHIPSWYk:f:o:p:G:c:s:m:l:K:U:"; 1235 #endif 1236 while ((c = getopt(argc, argv, optstr)) != -1) { 1237 switch (c) { 1238 case 'a': 1239 set_config_bool("x86.x2apic", false); 1240 break; 1241 case 'A': 1242 set_config_bool("acpi_tables", true); 1243 break; 1244 case 'D': 1245 set_config_bool("destroy_on_poweroff", true); 1246 break; 1247 case 'p': 1248 if (pincpu_parse(optarg) != 0) { 1249 errx(EX_USAGE, "invalid vcpu pinning " 1250 "configuration '%s'", optarg); 1251 } 1252 break; 1253 case 'c': 1254 if (topology_parse(optarg) != 0) { 1255 errx(EX_USAGE, "invalid cpu topology " 1256 "'%s'", optarg); 1257 } 1258 break; 1259 case 'C': 1260 set_config_bool("memory.guest_in_core", true); 1261 break; 1262 case 'f': 1263 if (qemu_fwcfg_parse_cmdline_arg(optarg) != 0) { 1264 errx(EX_USAGE, "invalid fwcfg item '%s'", optarg); 1265 } 1266 break; 1267 case 'G': 1268 parse_gdb_options(optarg); 1269 break; 1270 case 'k': 1271 parse_simple_config_file(optarg); 1272 break; 1273 case 'K': 1274 set_config_value("keyboard.layout", optarg); 1275 break; 1276 case 'l': 1277 if (strncmp(optarg, "help", strlen(optarg)) == 0) { 1278 lpc_print_supported_devices(); 1279 exit(0); 1280 } else if (lpc_device_parse(optarg) != 0) { 1281 errx(EX_USAGE, "invalid lpc device " 1282 "configuration '%s'", optarg); 1283 } 1284 break; 1285 #ifdef BHYVE_SNAPSHOT 1286 case 'r': 1287 restore_file = optarg; 1288 break; 1289 #endif 1290 case 's': 1291 if (strncmp(optarg, "help", strlen(optarg)) == 0) { 1292 pci_print_supported_devices(); 1293 exit(0); 1294 } else if (pci_parse_slot(optarg) != 0) 1295 exit(4); 1296 else 1297 break; 1298 case 'S': 1299 set_config_bool("memory.wired", true); 1300 break; 1301 case 'm': 1302 set_config_value("memory.size", optarg); 1303 break; 1304 case 'o': 1305 if (!parse_config_option(optarg)) 1306 errx(EX_USAGE, "invalid configuration option '%s'", optarg); 1307 break; 1308 case 'H': 1309 set_config_bool("x86.vmexit_on_hlt", true); 1310 break; 1311 case 'I': 1312 /* 1313 * The "-I" option was used to add an ioapic to the 1314 * virtual machine. 1315 * 1316 * An ioapic is now provided unconditionally for each 1317 * virtual machine and this option is now deprecated. 1318 */ 1319 break; 1320 case 'P': 1321 set_config_bool("x86.vmexit_on_pause", true); 1322 break; 1323 case 'e': 1324 set_config_bool("x86.strictio", true); 1325 break; 1326 case 'u': 1327 set_config_bool("rtc.use_localtime", false); 1328 break; 1329 case 'U': 1330 set_config_value("uuid", optarg); 1331 break; 1332 case 'w': 1333 set_config_bool("x86.strictmsr", false); 1334 break; 1335 case 'W': 1336 set_config_bool("virtio_msix", false); 1337 break; 1338 case 'x': 1339 set_config_bool("x86.x2apic", true); 1340 break; 1341 case 'Y': 1342 set_config_bool("x86.mptable", false); 1343 break; 1344 case 'h': 1345 usage(0); 1346 default: 1347 usage(1); 1348 } 1349 } 1350 argc -= optind; 1351 argv += optind; 1352 1353 if (argc > 1) 1354 usage(1); 1355 1356 #ifdef BHYVE_SNAPSHOT 1357 if (restore_file != NULL) { 1358 error = load_restore_file(restore_file, &rstate); 1359 if (error) { 1360 fprintf(stderr, "Failed to read checkpoint info from " 1361 "file: '%s'.\n", restore_file); 1362 exit(1); 1363 } 1364 vmname = lookup_vmname(&rstate); 1365 if (vmname != NULL) 1366 set_config_value("name", vmname); 1367 } 1368 #endif 1369 1370 if (argc == 1) 1371 set_config_value("name", argv[0]); 1372 1373 vmname = get_config_value("name"); 1374 if (vmname == NULL) 1375 usage(1); 1376 1377 if (get_config_bool_default("config.dump", false)) { 1378 dump_config(); 1379 exit(1); 1380 } 1381 1382 calc_topology(); 1383 build_vcpumaps(); 1384 1385 value = get_config_value("memory.size"); 1386 error = vm_parse_memsize(value, &memsize); 1387 if (error) 1388 errx(EX_USAGE, "invalid memsize '%s'", value); 1389 1390 ctx = do_open(vmname); 1391 1392 #ifdef BHYVE_SNAPSHOT 1393 if (restore_file != NULL) { 1394 guest_ncpus = lookup_guest_ncpus(&rstate); 1395 memflags = lookup_memflags(&rstate); 1396 memsize = lookup_memsize(&rstate); 1397 } 1398 1399 if (guest_ncpus < 1) { 1400 fprintf(stderr, "Invalid guest vCPUs (%d)\n", guest_ncpus); 1401 exit(1); 1402 } 1403 #endif 1404 1405 bsp = vm_vcpu_open(ctx, BSP); 1406 max_vcpus = num_vcpus_allowed(ctx, bsp); 1407 if (guest_ncpus > max_vcpus) { 1408 fprintf(stderr, "%d vCPUs requested but only %d available\n", 1409 guest_ncpus, max_vcpus); 1410 exit(4); 1411 } 1412 1413 fbsdrun_set_capabilities(bsp); 1414 1415 /* Allocate per-VCPU resources. */ 1416 vcpu_info = calloc(guest_ncpus, sizeof(*vcpu_info)); 1417 for (int vcpuid = 0; vcpuid < guest_ncpus; vcpuid++) { 1418 vcpu_info[vcpuid].ctx = ctx; 1419 vcpu_info[vcpuid].vcpuid = vcpuid; 1420 if (vcpuid == BSP) 1421 vcpu_info[vcpuid].vcpu = bsp; 1422 else 1423 vcpu_info[vcpuid].vcpu = vm_vcpu_open(ctx, vcpuid); 1424 } 1425 1426 memflags = 0; 1427 if (get_config_bool_default("memory.wired", false)) 1428 memflags |= VM_MEM_F_WIRED; 1429 if (get_config_bool_default("memory.guest_in_core", false)) 1430 memflags |= VM_MEM_F_INCORE; 1431 vm_set_memflags(ctx, memflags); 1432 error = vm_setup_memory(ctx, memsize, VM_MMAP_ALL); 1433 if (error) { 1434 fprintf(stderr, "Unable to setup memory (%d)\n", errno); 1435 exit(4); 1436 } 1437 1438 error = init_msr(); 1439 if (error) { 1440 fprintf(stderr, "init_msr error %d", error); 1441 exit(4); 1442 } 1443 1444 init_mem(guest_ncpus); 1445 init_inout(); 1446 kernemu_dev_init(); 1447 init_bootrom(ctx); 1448 atkbdc_init(ctx); 1449 pci_irq_init(ctx); 1450 ioapic_init(ctx); 1451 1452 rtc_init(ctx); 1453 sci_init(ctx); 1454 1455 if (qemu_fwcfg_init(ctx) != 0) { 1456 fprintf(stderr, "qemu fwcfg initialization error"); 1457 exit(4); 1458 } 1459 1460 if (qemu_fwcfg_add_file("opt/bhyve/hw.ncpu", sizeof(guest_ncpus), 1461 &guest_ncpus) != 0) { 1462 fprintf(stderr, "Could not add qemu fwcfg opt/bhyve/hw.ncpu"); 1463 exit(4); 1464 } 1465 1466 if (e820_init(ctx) != 0) { 1467 fprintf(stderr, "Unable to setup E820"); 1468 exit(4); 1469 } 1470 1471 /* 1472 * Exit if a device emulation finds an error in its initialization 1473 */ 1474 if (init_pci(ctx) != 0) { 1475 perror("device emulation initialization error"); 1476 exit(4); 1477 } 1478 if (init_tpm(ctx) != 0) { 1479 fprintf(stderr, "Failed to init TPM device"); 1480 exit(4); 1481 } 1482 1483 /* 1484 * Initialize after PCI, to allow a bootrom file to reserve the high 1485 * region. 1486 */ 1487 if (get_config_bool("acpi_tables")) 1488 vmgenc_init(ctx); 1489 1490 init_gdb(ctx); 1491 1492 if (lpc_bootrom()) { 1493 if (vm_set_capability(bsp, VM_CAP_UNRESTRICTED_GUEST, 1)) { 1494 fprintf(stderr, "ROM boot failed: unrestricted guest " 1495 "capability not available\n"); 1496 exit(4); 1497 } 1498 error = vcpu_reset(bsp); 1499 assert(error == 0); 1500 } 1501 1502 /* 1503 * Add all vCPUs. 1504 */ 1505 for (int vcpuid = 0; vcpuid < guest_ncpus; vcpuid++) 1506 spinup_vcpu(&vcpu_info[vcpuid], vcpuid == BSP); 1507 1508 #ifdef BHYVE_SNAPSHOT 1509 if (restore_file != NULL) { 1510 fprintf(stdout, "Pausing pci devs...\r\n"); 1511 if (vm_pause_devices() != 0) { 1512 fprintf(stderr, "Failed to pause PCI device state.\n"); 1513 exit(1); 1514 } 1515 1516 fprintf(stdout, "Restoring vm mem...\r\n"); 1517 if (restore_vm_mem(ctx, &rstate) != 0) { 1518 fprintf(stderr, "Failed to restore VM memory.\n"); 1519 exit(1); 1520 } 1521 1522 fprintf(stdout, "Restoring pci devs...\r\n"); 1523 if (vm_restore_devices(&rstate) != 0) { 1524 fprintf(stderr, "Failed to restore PCI device state.\n"); 1525 exit(1); 1526 } 1527 1528 fprintf(stdout, "Restoring kernel structs...\r\n"); 1529 if (vm_restore_kern_structs(ctx, &rstate) != 0) { 1530 fprintf(stderr, "Failed to restore kernel structs.\n"); 1531 exit(1); 1532 } 1533 1534 fprintf(stdout, "Resuming pci devs...\r\n"); 1535 if (vm_resume_devices() != 0) { 1536 fprintf(stderr, "Failed to resume PCI device state.\n"); 1537 exit(1); 1538 } 1539 } 1540 #endif 1541 1542 /* 1543 * build the guest tables, MP etc. 1544 */ 1545 if (get_config_bool_default("x86.mptable", true)) { 1546 error = mptable_build(ctx, guest_ncpus); 1547 if (error) { 1548 perror("error to build the guest tables"); 1549 exit(4); 1550 } 1551 } 1552 1553 error = smbios_build(ctx); 1554 if (error != 0) 1555 exit(4); 1556 1557 if (get_config_bool("acpi_tables")) { 1558 error = acpi_build(ctx, guest_ncpus); 1559 assert(error == 0); 1560 } 1561 1562 e820_fwcfg_item = e820_get_fwcfg_item(); 1563 if (e820_fwcfg_item == NULL) { 1564 fprintf(stderr, "invalid e820 table"); 1565 exit(4); 1566 } 1567 if (qemu_fwcfg_add_file("etc/e820", e820_fwcfg_item->size, 1568 e820_fwcfg_item->data) != 0) { 1569 fprintf(stderr, "could not add qemu fwcfg etc/e820"); 1570 exit(4); 1571 } 1572 free(e820_fwcfg_item); 1573 1574 if (lpc_bootrom() && strcmp(lpc_fwcfg(), "bhyve") == 0) { 1575 fwctl_init(); 1576 } 1577 1578 /* 1579 * Change the proc title to include the VM name. 1580 */ 1581 setproctitle("%s", vmname); 1582 1583 #ifdef BHYVE_SNAPSHOT 1584 /* initialize mutex/cond variables */ 1585 init_snapshot(); 1586 1587 /* 1588 * checkpointing thread for communication with bhyvectl 1589 */ 1590 if (init_checkpoint_thread(ctx) != 0) 1591 errx(EX_OSERR, "Failed to start checkpoint thread"); 1592 #endif 1593 1594 #ifndef WITHOUT_CAPSICUM 1595 caph_cache_catpages(); 1596 1597 if (caph_limit_stdout() == -1 || caph_limit_stderr() == -1) 1598 errx(EX_OSERR, "Unable to apply rights for sandbox"); 1599 1600 if (caph_enter() == -1) 1601 errx(EX_OSERR, "cap_enter() failed"); 1602 #endif 1603 1604 #ifdef BHYVE_SNAPSHOT 1605 if (restore_file != NULL) { 1606 destroy_restore_state(&rstate); 1607 if (vm_restore_time(ctx) < 0) 1608 err(EX_OSERR, "Unable to restore time"); 1609 1610 for (int vcpuid = 0; vcpuid < guest_ncpus; vcpuid++) 1611 vm_resume_cpu(vcpu_info[vcpuid].vcpu); 1612 } else 1613 #endif 1614 vm_resume_cpu(bsp); 1615 1616 /* 1617 * Head off to the main event dispatch loop 1618 */ 1619 mevent_dispatch(); 1620 1621 exit(4); 1622 } 1623