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/types.h>
30 #ifndef WITHOUT_CAPSICUM
31 #include <sys/capsicum.h>
32 #endif
33 #include <sys/mman.h>
34 #ifdef BHYVE_SNAPSHOT
35 #include <sys/socket.h>
36 #include <sys/stat.h>
37 #endif
38 #include <sys/time.h>
39 #ifdef BHYVE_SNAPSHOT
40 #include <sys/un.h>
41 #endif
42
43 #include <machine/atomic.h>
44
45 #ifndef WITHOUT_CAPSICUM
46 #include <capsicum_helpers.h>
47 #endif
48 #include <stdio.h>
49 #include <stdlib.h>
50 #include <string.h>
51 #include <err.h>
52 #include <errno.h>
53 #ifdef BHYVE_SNAPSHOT
54 #include <fcntl.h>
55 #endif
56 #include <libgen.h>
57 #include <unistd.h>
58 #include <assert.h>
59 #include <pthread.h>
60 #include <pthread_np.h>
61 #include <sysexits.h>
62 #include <stdbool.h>
63 #include <stdint.h>
64 #ifdef BHYVE_SNAPSHOT
65 #include <ucl.h>
66 #include <unistd.h>
67
68 #include <libxo/xo.h>
69 #endif
70
71 #include <vmmapi.h>
72
73 #include "acpi.h"
74 #include "bhyverun.h"
75 #include "bootrom.h"
76 #include "config.h"
77 #include "debug.h"
78 #ifdef BHYVE_GDB
79 #include "gdb.h"
80 #endif
81 #include "mem.h"
82 #include "mevent.h"
83 #include "pci_emul.h"
84 #ifdef __amd64__
85 #include "amd64/pci_lpc.h"
86 #endif
87 #include "qemu_fwcfg.h"
88 #ifdef BHYVE_SNAPSHOT
89 #include "snapshot.h"
90 #endif
91 #include "tpm_device.h"
92 #include "vmgenc.h"
93 #include "vmexit.h"
94
95 #define MB (1024UL * 1024)
96 #define GB (1024UL * MB)
97
98 int guest_ncpus;
99 uint16_t cpu_cores, cpu_sockets, cpu_threads;
100
101 int raw_stdio = 0;
102
103 #ifdef BHYVE_SNAPSHOT
104 char *restore_file;
105 #endif
106
107 static const int BSP = 0;
108
109 static cpuset_t cpumask;
110
111 static void vm_loop(struct vmctx *ctx, struct vcpu *vcpu);
112
113 static struct vcpu_info {
114 struct vmctx *ctx;
115 struct vcpu *vcpu;
116 int vcpuid;
117 } *vcpu_info;
118
119 static cpuset_t **vcpumap;
120
121 /*
122 * XXX This parser is known to have the following issues:
123 * 1. It accepts null key=value tokens ",," as setting "cpus" to an
124 * empty string.
125 *
126 * The acceptance of a null specification ('-c ""') is by design to match the
127 * manual page syntax specification, this results in a topology of 1 vCPU.
128 */
129 int
bhyve_topology_parse(const char * opt)130 bhyve_topology_parse(const char *opt)
131 {
132 char *cp, *str, *tofree;
133
134 if (*opt == '\0') {
135 set_config_value("sockets", "1");
136 set_config_value("cores", "1");
137 set_config_value("threads", "1");
138 set_config_value("cpus", "1");
139 return (0);
140 }
141
142 tofree = str = strdup(opt);
143 if (str == NULL)
144 errx(4, "Failed to allocate memory");
145
146 while ((cp = strsep(&str, ",")) != NULL) {
147 if (strncmp(cp, "cpus=", strlen("cpus=")) == 0)
148 set_config_value("cpus", cp + strlen("cpus="));
149 else if (strncmp(cp, "sockets=", strlen("sockets=")) == 0)
150 set_config_value("sockets", cp + strlen("sockets="));
151 else if (strncmp(cp, "cores=", strlen("cores=")) == 0)
152 set_config_value("cores", cp + strlen("cores="));
153 else if (strncmp(cp, "threads=", strlen("threads=")) == 0)
154 set_config_value("threads", cp + strlen("threads="));
155 else if (strchr(cp, '=') != NULL)
156 goto out;
157 else
158 set_config_value("cpus", cp);
159 }
160 free(tofree);
161 return (0);
162
163 out:
164 free(tofree);
165 return (-1);
166 }
167
168 static int
parse_int_value(const char * key,const char * value,int minval,int maxval)169 parse_int_value(const char *key, const char *value, int minval, int maxval)
170 {
171 char *cp;
172 long lval;
173
174 errno = 0;
175 lval = strtol(value, &cp, 0);
176 if (errno != 0 || *cp != '\0' || cp == value || lval < minval ||
177 lval > maxval)
178 errx(4, "Invalid value for %s: '%s'", key, value);
179 return (lval);
180 }
181
182 /*
183 * Set the sockets, cores, threads, and guest_cpus variables based on
184 * the configured topology.
185 *
186 * The limits of UINT16_MAX are due to the types passed to
187 * vm_set_topology(). vmm.ko may enforce tighter limits.
188 */
189 static void
calc_topology(void)190 calc_topology(void)
191 {
192 const char *value;
193 bool explicit_cpus;
194 uint64_t ncpus;
195
196 value = get_config_value("cpus");
197 if (value != NULL) {
198 guest_ncpus = parse_int_value("cpus", value, 1, UINT16_MAX);
199 explicit_cpus = true;
200 } else {
201 guest_ncpus = 1;
202 explicit_cpus = false;
203 }
204 value = get_config_value("cores");
205 if (value != NULL)
206 cpu_cores = parse_int_value("cores", value, 1, UINT16_MAX);
207 else
208 cpu_cores = 1;
209 value = get_config_value("threads");
210 if (value != NULL)
211 cpu_threads = parse_int_value("threads", value, 1, UINT16_MAX);
212 else
213 cpu_threads = 1;
214 value = get_config_value("sockets");
215 if (value != NULL)
216 cpu_sockets = parse_int_value("sockets", value, 1, UINT16_MAX);
217 else
218 cpu_sockets = guest_ncpus;
219
220 /*
221 * Compute sockets * cores * threads avoiding overflow. The
222 * range check above insures these are 16 bit values.
223 */
224 ncpus = (uint64_t)cpu_sockets * cpu_cores * cpu_threads;
225 if (ncpus > UINT16_MAX)
226 errx(4, "Computed number of vCPUs too high: %ju",
227 (uintmax_t)ncpus);
228
229 if (explicit_cpus) {
230 if (guest_ncpus != (int)ncpus)
231 errx(4, "Topology (%d sockets, %d cores, %d threads) "
232 "does not match %d vCPUs",
233 cpu_sockets, cpu_cores, cpu_threads,
234 guest_ncpus);
235 } else
236 guest_ncpus = ncpus;
237 }
238
239 int
bhyve_pincpu_parse(const char * opt)240 bhyve_pincpu_parse(const char *opt)
241 {
242 const char *value;
243 char *newval;
244 char key[16];
245 int vcpu, pcpu;
246
247 if (sscanf(opt, "%d:%d", &vcpu, &pcpu) != 2) {
248 fprintf(stderr, "invalid format: %s\n", opt);
249 return (-1);
250 }
251
252 if (vcpu < 0) {
253 fprintf(stderr, "invalid vcpu '%d'\n", vcpu);
254 return (-1);
255 }
256
257 if (pcpu < 0 || pcpu >= CPU_SETSIZE) {
258 fprintf(stderr, "hostcpu '%d' outside valid range from "
259 "0 to %d\n", pcpu, CPU_SETSIZE - 1);
260 return (-1);
261 }
262
263 snprintf(key, sizeof(key), "vcpu.%d.cpuset", vcpu);
264 value = get_config_value(key);
265
266 if (asprintf(&newval, "%s%s%d", value != NULL ? value : "",
267 value != NULL ? "," : "", pcpu) == -1) {
268 perror("failed to build new cpuset string");
269 return (-1);
270 }
271
272 set_config_value(key, newval);
273 free(newval);
274 return (0);
275 }
276
277 static void
parse_cpuset(int vcpu,const char * list,cpuset_t * set)278 parse_cpuset(int vcpu, const char *list, cpuset_t *set)
279 {
280 char *cp, *token;
281 int pcpu, start;
282
283 CPU_ZERO(set);
284 start = -1;
285 token = __DECONST(char *, list);
286 for (;;) {
287 pcpu = strtoul(token, &cp, 0);
288 if (cp == token)
289 errx(4, "invalid cpuset for vcpu %d: '%s'", vcpu, list);
290 if (pcpu < 0 || pcpu >= CPU_SETSIZE)
291 errx(4, "hostcpu '%d' outside valid range from 0 to %d",
292 pcpu, CPU_SETSIZE - 1);
293 switch (*cp) {
294 case ',':
295 case '\0':
296 if (start >= 0) {
297 if (start > pcpu)
298 errx(4, "Invalid hostcpu range %d-%d",
299 start, pcpu);
300 while (start < pcpu) {
301 CPU_SET(start, set);
302 start++;
303 }
304 start = -1;
305 }
306 CPU_SET(pcpu, set);
307 break;
308 case '-':
309 if (start >= 0)
310 errx(4, "invalid cpuset for vcpu %d: '%s'",
311 vcpu, list);
312 start = pcpu;
313 break;
314 default:
315 errx(4, "invalid cpuset for vcpu %d: '%s'", vcpu, list);
316 }
317 if (*cp == '\0')
318 break;
319 token = cp + 1;
320 }
321 }
322
323 static void
build_vcpumaps(void)324 build_vcpumaps(void)
325 {
326 char key[16];
327 const char *value;
328 int vcpu;
329
330 vcpumap = calloc(guest_ncpus, sizeof(*vcpumap));
331 for (vcpu = 0; vcpu < guest_ncpus; vcpu++) {
332 snprintf(key, sizeof(key), "vcpu.%d.cpuset", vcpu);
333 value = get_config_value(key);
334 if (value == NULL)
335 continue;
336 vcpumap[vcpu] = malloc(sizeof(cpuset_t));
337 if (vcpumap[vcpu] == NULL)
338 err(4, "Failed to allocate cpuset for vcpu %d", vcpu);
339 parse_cpuset(vcpu, value, vcpumap[vcpu]);
340 }
341 }
342
343 void *
paddr_guest2host(struct vmctx * ctx,uintptr_t gaddr,size_t len)344 paddr_guest2host(struct vmctx *ctx, uintptr_t gaddr, size_t len)
345 {
346
347 return (vm_map_gpa(ctx, gaddr, len));
348 }
349
350 #ifdef BHYVE_SNAPSHOT
351 uintptr_t
paddr_host2guest(struct vmctx * ctx,void * addr)352 paddr_host2guest(struct vmctx *ctx, void *addr)
353 {
354 return (vm_rev_map_gpa(ctx, addr));
355 }
356 #endif
357
358 int
fbsdrun_virtio_msix(void)359 fbsdrun_virtio_msix(void)
360 {
361
362 return (get_config_bool_default("virtio_msix", true));
363 }
364
365 struct vcpu *
fbsdrun_vcpu(int vcpuid)366 fbsdrun_vcpu(int vcpuid)
367 {
368 return (vcpu_info[vcpuid].vcpu);
369 }
370
371 static void *
fbsdrun_start_thread(void * param)372 fbsdrun_start_thread(void *param)
373 {
374 char tname[MAXCOMLEN + 1];
375 struct vcpu_info *vi = param;
376 int error;
377
378 snprintf(tname, sizeof(tname), "vcpu %d", vi->vcpuid);
379 pthread_set_name_np(pthread_self(), tname);
380
381 if (vcpumap[vi->vcpuid] != NULL) {
382 error = pthread_setaffinity_np(pthread_self(),
383 sizeof(cpuset_t), vcpumap[vi->vcpuid]);
384 assert(error == 0);
385 }
386
387 #ifdef BHYVE_SNAPSHOT
388 checkpoint_cpu_add(vi->vcpuid);
389 #endif
390 #ifdef BHYVE_GDB
391 gdb_cpu_add(vi->vcpu);
392 #endif
393
394 vm_loop(vi->ctx, vi->vcpu);
395
396 /* not reached */
397 exit(1);
398 return (NULL);
399 }
400
401 void
fbsdrun_addcpu(int vcpuid)402 fbsdrun_addcpu(int vcpuid)
403 {
404 struct vcpu_info *vi;
405 pthread_t thr;
406 int error;
407
408 vi = &vcpu_info[vcpuid];
409
410 error = vm_activate_cpu(vi->vcpu);
411 if (error != 0)
412 err(EX_OSERR, "could not activate CPU %d", vi->vcpuid);
413
414 CPU_SET_ATOMIC(vcpuid, &cpumask);
415
416 error = vm_suspend_cpu(vi->vcpu);
417 assert(error == 0);
418
419 error = pthread_create(&thr, NULL, fbsdrun_start_thread, vi);
420 assert(error == 0);
421 }
422
423 void
fbsdrun_deletecpu(int vcpu)424 fbsdrun_deletecpu(int vcpu)
425 {
426 static pthread_mutex_t resetcpu_mtx = PTHREAD_MUTEX_INITIALIZER;
427 static pthread_cond_t resetcpu_cond = PTHREAD_COND_INITIALIZER;
428
429 pthread_mutex_lock(&resetcpu_mtx);
430 if (!CPU_ISSET(vcpu, &cpumask)) {
431 EPRINTLN("Attempting to delete unknown cpu %d", vcpu);
432 exit(4);
433 }
434
435 CPU_CLR(vcpu, &cpumask);
436
437 if (vcpu != BSP) {
438 pthread_cond_signal(&resetcpu_cond);
439 pthread_mutex_unlock(&resetcpu_mtx);
440 pthread_exit(NULL);
441 /* NOTREACHED */
442 }
443
444 while (!CPU_EMPTY(&cpumask)) {
445 pthread_cond_wait(&resetcpu_cond, &resetcpu_mtx);
446 }
447 pthread_mutex_unlock(&resetcpu_mtx);
448 }
449
450 int
fbsdrun_suspendcpu(int vcpuid)451 fbsdrun_suspendcpu(int vcpuid)
452 {
453 return (vm_suspend_cpu(vcpu_info[vcpuid].vcpu));
454 }
455
456 static void
vm_loop(struct vmctx * ctx,struct vcpu * vcpu)457 vm_loop(struct vmctx *ctx, struct vcpu *vcpu)
458 {
459 struct vm_exit vme;
460 struct vm_run vmrun;
461 int error, rc;
462 enum vm_exitcode exitcode;
463 cpuset_t active_cpus, dmask;
464
465 error = vm_active_cpus(ctx, &active_cpus);
466 assert(CPU_ISSET(vcpu_id(vcpu), &active_cpus));
467
468 vmrun.vm_exit = &vme;
469 vmrun.cpuset = &dmask;
470 vmrun.cpusetsize = sizeof(dmask);
471
472 while (1) {
473 error = vm_run(vcpu, &vmrun);
474 if (error != 0)
475 break;
476
477 exitcode = vme.exitcode;
478 if (exitcode >= VM_EXITCODE_MAX ||
479 vmexit_handlers[exitcode] == NULL) {
480 warnx("vm_loop: unexpected exitcode 0x%x", exitcode);
481 exit(4);
482 }
483
484 rc = (*vmexit_handlers[exitcode])(ctx, vcpu, &vmrun);
485
486 switch (rc) {
487 case VMEXIT_CONTINUE:
488 break;
489 case VMEXIT_ABORT:
490 abort();
491 default:
492 exit(4);
493 }
494 }
495 EPRINTLN("vm_run error %d, errno %d", error, errno);
496 }
497
498 static int
num_vcpus_allowed(struct vmctx * ctx,struct vcpu * vcpu)499 num_vcpus_allowed(struct vmctx *ctx, struct vcpu *vcpu)
500 {
501 uint16_t sockets, cores, threads, maxcpus;
502 int tmp, error;
503
504 /*
505 * The guest is allowed to spinup more than one processor only if the
506 * UNRESTRICTED_GUEST capability is available.
507 */
508 error = vm_get_capability(vcpu, VM_CAP_UNRESTRICTED_GUEST, &tmp);
509 if (error != 0)
510 return (1);
511
512 error = vm_get_topology(ctx, &sockets, &cores, &threads, &maxcpus);
513 if (error == 0)
514 return (maxcpus);
515 else
516 return (1);
517 }
518
519 static struct vmctx *
do_open(const char * vmname)520 do_open(const char *vmname)
521 {
522 struct vmctx *ctx;
523 int error;
524 bool reinit, romboot;
525
526 reinit = false;
527
528 #ifdef __amd64__
529 romboot = lpc_bootrom() != NULL;
530 #else
531 romboot = true;
532 #endif
533
534 error = vm_create(vmname);
535 if (error) {
536 if (errno == EEXIST) {
537 if (romboot) {
538 reinit = true;
539 } else {
540 /*
541 * The virtual machine has been setup by the
542 * userspace bootloader.
543 */
544 }
545 } else {
546 perror("vm_create");
547 exit(4);
548 }
549 } else {
550 if (!romboot) {
551 /*
552 * If the virtual machine was just created then a
553 * bootrom must be configured to boot it.
554 */
555 fprintf(stderr, "virtual machine cannot be booted\n");
556 exit(4);
557 }
558 }
559
560 ctx = vm_open(vmname);
561 if (ctx == NULL) {
562 perror("vm_open");
563 exit(4);
564 }
565
566 #ifndef WITHOUT_CAPSICUM
567 if (vm_limit_rights(ctx) != 0)
568 err(EX_OSERR, "vm_limit_rights");
569 #endif
570
571 if (reinit) {
572 error = vm_reinit(ctx);
573 if (error) {
574 perror("vm_reinit");
575 exit(4);
576 }
577 }
578 error = vm_set_topology(ctx, cpu_sockets, cpu_cores, cpu_threads, 0);
579 if (error)
580 errx(EX_OSERR, "vm_set_topology");
581 return (ctx);
582 }
583
584 bool
bhyve_parse_config_option(const char * option)585 bhyve_parse_config_option(const char *option)
586 {
587 const char *value;
588 char *path;
589
590 value = strchr(option, '=');
591 if (value == NULL || value[1] == '\0')
592 return (false);
593 path = strndup(option, value - option);
594 if (path == NULL)
595 err(4, "Failed to allocate memory");
596 set_config_value(path, value + 1);
597 free(path);
598 return (true);
599 }
600
601 void
bhyve_parse_simple_config_file(const char * path)602 bhyve_parse_simple_config_file(const char *path)
603 {
604 FILE *fp;
605 char *line, *cp;
606 size_t linecap;
607 unsigned int lineno;
608
609 fp = fopen(path, "r");
610 if (fp == NULL)
611 err(4, "Failed to open configuration file %s", path);
612 line = NULL;
613 linecap = 0;
614 lineno = 1;
615 for (lineno = 1; getline(&line, &linecap, fp) > 0; lineno++) {
616 if (*line == '#' || *line == '\n')
617 continue;
618 cp = strchr(line, '\n');
619 if (cp != NULL)
620 *cp = '\0';
621 if (!bhyve_parse_config_option(line))
622 errx(4, "%s line %u: invalid config option '%s'", path,
623 lineno, line);
624 }
625 free(line);
626 fclose(fp);
627 }
628
629 #ifdef BHYVE_GDB
630 void
bhyve_parse_gdb_options(const char * opt)631 bhyve_parse_gdb_options(const char *opt)
632 {
633 const char *sport;
634 char *colon;
635
636 if (opt[0] == 'w') {
637 set_config_bool("gdb.wait", true);
638 opt++;
639 }
640
641 colon = strrchr(opt, ':');
642 if (colon == NULL) {
643 sport = opt;
644 } else {
645 *colon = '\0';
646 colon++;
647 sport = colon;
648 set_config_value("gdb.address", opt);
649 }
650
651 set_config_value("gdb.port", sport);
652 }
653 #endif
654
655 int
main(int argc,char * argv[])656 main(int argc, char *argv[])
657 {
658 int error;
659 int max_vcpus, memflags;
660 struct vcpu *bsp;
661 struct vmctx *ctx;
662 size_t memsize;
663 const char *value, *vmname;
664 #ifdef BHYVE_SNAPSHOT
665 struct restore_state rstate;
666 #endif
667
668 bhyve_init_config();
669 bhyve_optparse(argc, argv);
670 argc -= optind;
671 argv += optind;
672
673 if (argc > 1)
674 bhyve_usage(1);
675
676 #ifdef BHYVE_SNAPSHOT
677 if (restore_file != NULL) {
678 error = load_restore_file(restore_file, &rstate);
679 if (error) {
680 fprintf(stderr, "Failed to read checkpoint info from "
681 "file: '%s'.\n", restore_file);
682 exit(1);
683 }
684 vmname = lookup_vmname(&rstate);
685 if (vmname != NULL)
686 set_config_value("name", vmname);
687 }
688 #endif
689
690 if (argc == 1)
691 set_config_value("name", argv[0]);
692
693 vmname = get_config_value("name");
694 if (vmname == NULL)
695 bhyve_usage(1);
696
697 if (get_config_bool_default("config.dump", false)) {
698 dump_config();
699 exit(1);
700 }
701
702 calc_topology();
703 build_vcpumaps();
704
705 value = get_config_value("memory.size");
706 error = vm_parse_memsize(value, &memsize);
707 if (error)
708 errx(EX_USAGE, "invalid memsize '%s'", value);
709
710 ctx = do_open(vmname);
711
712 #ifdef BHYVE_SNAPSHOT
713 if (restore_file != NULL) {
714 guest_ncpus = lookup_guest_ncpus(&rstate);
715 memflags = lookup_memflags(&rstate);
716 memsize = lookup_memsize(&rstate);
717 }
718
719 if (guest_ncpus < 1) {
720 fprintf(stderr, "Invalid guest vCPUs (%d)\n", guest_ncpus);
721 exit(1);
722 }
723 #endif
724
725 bsp = vm_vcpu_open(ctx, BSP);
726 max_vcpus = num_vcpus_allowed(ctx, bsp);
727 if (guest_ncpus > max_vcpus) {
728 fprintf(stderr, "%d vCPUs requested but only %d available\n",
729 guest_ncpus, max_vcpus);
730 exit(4);
731 }
732
733 bhyve_init_vcpu(bsp);
734
735 /* Allocate per-VCPU resources. */
736 vcpu_info = calloc(guest_ncpus, sizeof(*vcpu_info));
737 for (int vcpuid = 0; vcpuid < guest_ncpus; vcpuid++) {
738 vcpu_info[vcpuid].ctx = ctx;
739 vcpu_info[vcpuid].vcpuid = vcpuid;
740 if (vcpuid == BSP)
741 vcpu_info[vcpuid].vcpu = bsp;
742 else
743 vcpu_info[vcpuid].vcpu = vm_vcpu_open(ctx, vcpuid);
744 }
745
746 memflags = 0;
747 if (get_config_bool_default("memory.wired", false))
748 memflags |= VM_MEM_F_WIRED;
749 if (get_config_bool_default("memory.guest_in_core", false))
750 memflags |= VM_MEM_F_INCORE;
751 vm_set_memflags(ctx, memflags);
752 error = vm_setup_memory(ctx, memsize, VM_MMAP_ALL);
753 if (error) {
754 fprintf(stderr, "Unable to setup memory (%d)\n", errno);
755 exit(4);
756 }
757
758 init_mem(guest_ncpus);
759 init_bootrom(ctx);
760 if (bhyve_init_platform(ctx, bsp) != 0)
761 exit(4);
762
763 if (qemu_fwcfg_init(ctx) != 0) {
764 fprintf(stderr, "qemu fwcfg initialization error\n");
765 exit(4);
766 }
767
768 if (qemu_fwcfg_add_file("opt/bhyve/hw.ncpu", sizeof(guest_ncpus),
769 &guest_ncpus) != 0) {
770 fprintf(stderr, "Could not add qemu fwcfg opt/bhyve/hw.ncpu\n");
771 exit(4);
772 }
773
774 /*
775 * Exit if a device emulation finds an error in its initialization
776 */
777 if (init_pci(ctx) != 0) {
778 EPRINTLN("Device emulation initialization error: %s",
779 strerror(errno));
780 exit(4);
781 }
782 if (init_tpm(ctx) != 0) {
783 EPRINTLN("Failed to init TPM device");
784 exit(4);
785 }
786
787 /*
788 * Initialize after PCI, to allow a bootrom file to reserve the high
789 * region.
790 */
791 if (get_config_bool("acpi_tables"))
792 vmgenc_init(ctx);
793
794 #ifdef BHYVE_GDB
795 init_gdb(ctx);
796 #endif
797
798 /*
799 * Add all vCPUs.
800 */
801 for (int vcpuid = 0; vcpuid < guest_ncpus; vcpuid++)
802 bhyve_start_vcpu(vcpu_info[vcpuid].vcpu, vcpuid == BSP);
803
804 #ifdef BHYVE_SNAPSHOT
805 if (restore_file != NULL) {
806 FPRINTLN(stdout, "Pausing pci devs...");
807 if (vm_pause_devices() != 0) {
808 EPRINTLN("Failed to pause PCI device state.");
809 exit(1);
810 }
811
812 FPRINTLN(stdout, "Restoring vm mem...");
813 if (restore_vm_mem(ctx, &rstate) != 0) {
814 EPRINTLN("Failed to restore VM memory.");
815 exit(1);
816 }
817
818 FPRINTLN(stdout, "Restoring pci devs...");
819 if (vm_restore_devices(&rstate) != 0) {
820 EPRINTLN("Failed to restore PCI device state.");
821 exit(1);
822 }
823
824 FPRINTLN(stdout, "Restoring kernel structs...");
825 if (vm_restore_kern_structs(ctx, &rstate) != 0) {
826 EPRINTLN("Failed to restore kernel structs.");
827 exit(1);
828 }
829
830 FPRINTLN(stdout, "Resuming pci devs...");
831 if (vm_resume_devices() != 0) {
832 EPRINTLN("Failed to resume PCI device state.");
833 exit(1);
834 }
835 }
836 #endif
837
838 if (bhyve_init_platform_late(ctx, bsp) != 0)
839 exit(4);
840
841 /*
842 * Change the proc title to include the VM name.
843 */
844 setproctitle("%s", vmname);
845
846 #ifdef BHYVE_SNAPSHOT
847 /*
848 * checkpointing thread for communication with bhyvectl
849 */
850 if (init_checkpoint_thread(ctx) != 0)
851 errx(EX_OSERR, "Failed to start checkpoint thread");
852 #endif
853
854 #ifndef WITHOUT_CAPSICUM
855 caph_cache_catpages();
856
857 if (caph_limit_stdout() == -1 || caph_limit_stderr() == -1)
858 errx(EX_OSERR, "Unable to apply rights for sandbox");
859
860 if (caph_enter() == -1)
861 errx(EX_OSERR, "cap_enter() failed");
862 #endif
863
864 #ifdef BHYVE_SNAPSHOT
865 if (restore_file != NULL) {
866 destroy_restore_state(&rstate);
867 if (vm_restore_time(ctx) < 0)
868 err(EX_OSERR, "Unable to restore time");
869
870 for (int vcpuid = 0; vcpuid < guest_ncpus; vcpuid++)
871 vm_resume_cpu(vcpu_info[vcpuid].vcpu);
872 } else
873 #endif
874 vm_resume_cpu(bsp);
875
876 /*
877 * Head off to the main event dispatch loop
878 */
879 mevent_dispatch();
880
881 exit(4);
882 }
883