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