bhyverun.c revision 262744 
1/*-
2 * Copyright (c) 2011 NetApp, Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/usr.sbin/bhyve/bhyverun.c 262744 2014-03-04 17:12:06Z tychon $
27 */
28
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD: head/usr.sbin/bhyve/bhyverun.c 262744 2014-03-04 17:12:06Z tychon $");
31
32#include <sys/types.h>
33#include <sys/mman.h>
34#include <sys/time.h>
35
36#include <machine/atomic.h>
37#include <machine/segments.h>
38
39#include <stdio.h>
40#include <stdlib.h>
41#include <string.h>
42#include <err.h>
43#include <libgen.h>
44#include <unistd.h>
45#include <assert.h>
46#include <errno.h>
47#include <pthread.h>
48#include <pthread_np.h>
49#include <sysexits.h>
50
51#include <machine/vmm.h>
52#include <vmmapi.h>
53
54#include "bhyverun.h"
55#include "acpi.h"
56#include "inout.h"
57#include "dbgport.h"
58#include "ioapic.h"
59#include "mem.h"
60#include "mevent.h"
61#include "mptbl.h"
62#include "pci_emul.h"
63#include "pci_lpc.h"
64#include "smbiostbl.h"
65#include "xmsr.h"
66#include "spinup_ap.h"
67#include "rtc.h"
68
69#define GUEST_NIO_PORT		0x488	/* guest upcalls via i/o port */
70
71#define	VMEXIT_SWITCH		0	/* force vcpu switch in mux mode */
72#define	VMEXIT_CONTINUE		1	/* continue from next instruction */
73#define	VMEXIT_RESTART		2	/* restart current instruction */
74#define	VMEXIT_ABORT		3	/* abort the vm run loop */
75#define	VMEXIT_RESET		4	/* guest machine has reset */
76#define	VMEXIT_POWEROFF		5	/* guest machine has powered off */
77
78#define MB		(1024UL * 1024)
79#define GB		(1024UL * MB)
80
81typedef int (*vmexit_handler_t)(struct vmctx *, struct vm_exit *, int *vcpu);
82
83char *vmname;
84
85int guest_ncpus;
86char *guest_uuid_str;
87
88static int pincpu = -1;
89static int guest_vmexit_on_hlt, guest_vmexit_on_pause;
90static int virtio_msix = 1;
91static int x2apic_mode = 0;	/* default is xAPIC */
92
93static int strictio;
94static int strictmsr = 1;
95
96static int acpi;
97
98static char *progname;
99static const int BSP = 0;
100
101static int cpumask;
102
103static void vm_loop(struct vmctx *ctx, int vcpu, uint64_t rip);
104
105struct vm_exit vmexit[VM_MAXCPU];
106
107struct bhyvestats {
108        uint64_t        vmexit_bogus;
109        uint64_t        vmexit_bogus_switch;
110        uint64_t        vmexit_hlt;
111        uint64_t        vmexit_pause;
112        uint64_t        vmexit_mtrap;
113        uint64_t        vmexit_inst_emul;
114        uint64_t        cpu_switch_rotate;
115        uint64_t        cpu_switch_direct;
116        int             io_reset;
117} stats;
118
119struct mt_vmm_info {
120	pthread_t	mt_thr;
121	struct vmctx	*mt_ctx;
122	int		mt_vcpu;
123} mt_vmm_info[VM_MAXCPU];
124
125static void
126usage(int code)
127{
128
129        fprintf(stderr,
130                "Usage: %s [-aehwAHIPW] [-g <gdb port>] [-s <pci>]\n"
131		"       %*s [-c vcpus] [-p pincpu] [-m mem] [-l <lpc>] <vm>\n"
132		"       -a: local apic is in xAPIC mode (deprecated)\n"
133		"       -A: create an ACPI table\n"
134		"       -g: gdb port\n"
135		"       -c: # cpus (default 1)\n"
136		"       -p: pin vcpu 'n' to host cpu 'pincpu + n'\n"
137		"       -H: vmexit from the guest on hlt\n"
138		"       -P: vmexit from the guest on pause\n"
139		"       -W: force virtio to use single-vector MSI\n"
140		"       -e: exit on unhandled I/O access\n"
141		"       -h: help\n"
142		"       -s: <slot,driver,configinfo> PCI slot config\n"
143		"       -l: LPC device configuration\n"
144		"       -m: memory size in MB\n"
145		"       -w: ignore unimplemented MSRs\n"
146		"       -x: local apic is in x2APIC mode\n"
147		"       -U: uuid\n",
148		progname, (int)strlen(progname), "");
149
150	exit(code);
151}
152
153void *
154paddr_guest2host(struct vmctx *ctx, uintptr_t gaddr, size_t len)
155{
156
157	return (vm_map_gpa(ctx, gaddr, len));
158}
159
160int
161fbsdrun_vmexit_on_pause(void)
162{
163
164	return (guest_vmexit_on_pause);
165}
166
167int
168fbsdrun_vmexit_on_hlt(void)
169{
170
171	return (guest_vmexit_on_hlt);
172}
173
174int
175fbsdrun_virtio_msix(void)
176{
177
178	return (virtio_msix);
179}
180
181static void *
182fbsdrun_start_thread(void *param)
183{
184	char tname[MAXCOMLEN + 1];
185	struct mt_vmm_info *mtp;
186	int vcpu;
187
188	mtp = param;
189	vcpu = mtp->mt_vcpu;
190
191	snprintf(tname, sizeof(tname), "vcpu %d", vcpu);
192	pthread_set_name_np(mtp->mt_thr, tname);
193
194	vm_loop(mtp->mt_ctx, vcpu, vmexit[vcpu].rip);
195
196	/* not reached */
197	exit(1);
198	return (NULL);
199}
200
201void
202fbsdrun_addcpu(struct vmctx *ctx, int vcpu, uint64_t rip)
203{
204	int error;
205
206	if (cpumask & (1 << vcpu)) {
207		fprintf(stderr, "addcpu: attempting to add existing cpu %d\n",
208		    vcpu);
209		exit(1);
210	}
211
212	atomic_set_int(&cpumask, 1 << vcpu);
213
214	/*
215	 * Set up the vmexit struct to allow execution to start
216	 * at the given RIP
217	 */
218	vmexit[vcpu].rip = rip;
219	vmexit[vcpu].inst_length = 0;
220
221	mt_vmm_info[vcpu].mt_ctx = ctx;
222	mt_vmm_info[vcpu].mt_vcpu = vcpu;
223
224	error = pthread_create(&mt_vmm_info[vcpu].mt_thr, NULL,
225	    fbsdrun_start_thread, &mt_vmm_info[vcpu]);
226	assert(error == 0);
227}
228
229static int
230fbsdrun_deletecpu(struct vmctx *ctx, int vcpu)
231{
232
233	if ((cpumask & (1 << vcpu)) == 0) {
234		fprintf(stderr, "addcpu: attempting to delete unknown cpu %d\n",
235		    vcpu);
236		exit(1);
237	}
238
239	atomic_clear_int(&cpumask, 1 << vcpu);
240	return (cpumask == 0);
241}
242
243static int
244vmexit_catch_reset(void)
245{
246        stats.io_reset++;
247        return (VMEXIT_RESET);
248}
249
250static int
251vmexit_catch_inout(void)
252{
253	return (VMEXIT_ABORT);
254}
255
256static int
257vmexit_handle_notify(struct vmctx *ctx, struct vm_exit *vme, int *pvcpu,
258		     uint32_t eax)
259{
260#if BHYVE_DEBUG
261	/*
262	 * put guest-driven debug here
263	 */
264#endif
265        return (VMEXIT_CONTINUE);
266}
267
268static int
269vmexit_inout(struct vmctx *ctx, struct vm_exit *vme, int *pvcpu)
270{
271	int error;
272	int bytes, port, in, out;
273	uint32_t eax;
274	int vcpu;
275
276	vcpu = *pvcpu;
277
278	port = vme->u.inout.port;
279	bytes = vme->u.inout.bytes;
280	eax = vme->u.inout.eax;
281	in = vme->u.inout.in;
282	out = !in;
283
284	/* We don't deal with these */
285	if (vme->u.inout.string || vme->u.inout.rep)
286		return (VMEXIT_ABORT);
287
288	/* Special case of guest reset */
289	if (out && port == 0x64 && (uint8_t)eax == 0xFE)
290		return (vmexit_catch_reset());
291
292        /* Extra-special case of host notifications */
293        if (out && port == GUEST_NIO_PORT)
294                return (vmexit_handle_notify(ctx, vme, pvcpu, eax));
295
296	error = emulate_inout(ctx, vcpu, in, port, bytes, &eax, strictio);
297	if (error == INOUT_OK && in)
298		error = vm_set_register(ctx, vcpu, VM_REG_GUEST_RAX, eax);
299
300	switch (error) {
301	case INOUT_OK:
302		return (VMEXIT_CONTINUE);
303	case INOUT_RESET:
304		return (VMEXIT_RESET);
305	case INOUT_POWEROFF:
306		return (VMEXIT_POWEROFF);
307	default:
308		fprintf(stderr, "Unhandled %s%c 0x%04x\n",
309			in ? "in" : "out",
310			bytes == 1 ? 'b' : (bytes == 2 ? 'w' : 'l'), port);
311		return (vmexit_catch_inout());
312	}
313}
314
315static int
316vmexit_rdmsr(struct vmctx *ctx, struct vm_exit *vme, int *pvcpu)
317{
318	uint64_t val;
319	uint32_t eax, edx;
320	int error;
321
322	val = 0;
323	error = emulate_rdmsr(ctx, *pvcpu, vme->u.msr.code, &val);
324	if (error != 0) {
325		fprintf(stderr, "rdmsr to register %#x on vcpu %d\n",
326		    vme->u.msr.code, *pvcpu);
327		if (strictmsr) {
328			error = vm_inject_exception2(ctx, *pvcpu, IDT_GP, 0);
329			assert(error == 0);
330			return (VMEXIT_RESTART);
331		}
332	}
333
334	eax = val;
335	error = vm_set_register(ctx, *pvcpu, VM_REG_GUEST_RAX, eax);
336	assert(error == 0);
337
338	edx = val >> 32;
339	error = vm_set_register(ctx, *pvcpu, VM_REG_GUEST_RDX, edx);
340	assert(error == 0);
341
342	return (VMEXIT_CONTINUE);
343}
344
345static int
346vmexit_wrmsr(struct vmctx *ctx, struct vm_exit *vme, int *pvcpu)
347{
348	int error;
349
350	error = emulate_wrmsr(ctx, *pvcpu, vme->u.msr.code, vme->u.msr.wval);
351	if (error != 0) {
352		fprintf(stderr, "wrmsr to register %#x(%#lx) on vcpu %d\n",
353		    vme->u.msr.code, vme->u.msr.wval, *pvcpu);
354		if (strictmsr) {
355			error = vm_inject_exception2(ctx, *pvcpu, IDT_GP, 0);
356			assert(error == 0);
357			return (VMEXIT_RESTART);
358		}
359	}
360	return (VMEXIT_CONTINUE);
361}
362
363static int
364vmexit_spinup_ap(struct vmctx *ctx, struct vm_exit *vme, int *pvcpu)
365{
366	int newcpu;
367	int retval = VMEXIT_CONTINUE;
368
369	newcpu = spinup_ap(ctx, *pvcpu,
370			   vme->u.spinup_ap.vcpu, vme->u.spinup_ap.rip);
371
372	return (retval);
373}
374
375static int
376vmexit_spindown_cpu(struct vmctx *ctx, struct vm_exit *vme, int *pvcpu)
377{
378	int lastcpu;
379
380	lastcpu = fbsdrun_deletecpu(ctx, *pvcpu);
381	if (!lastcpu)
382		pthread_exit(NULL);
383	return (vmexit_catch_reset());
384}
385
386static int
387vmexit_vmx(struct vmctx *ctx, struct vm_exit *vmexit, int *pvcpu)
388{
389
390	fprintf(stderr, "vm exit[%d]\n", *pvcpu);
391	fprintf(stderr, "\treason\t\tVMX\n");
392	fprintf(stderr, "\trip\t\t0x%016lx\n", vmexit->rip);
393	fprintf(stderr, "\tinst_length\t%d\n", vmexit->inst_length);
394	fprintf(stderr, "\tstatus\t\t%d\n", vmexit->u.vmx.status);
395	fprintf(stderr, "\texit_reason\t%u\n", vmexit->u.vmx.exit_reason);
396	fprintf(stderr, "\tqualification\t0x%016lx\n",
397	    vmexit->u.vmx.exit_qualification);
398	fprintf(stderr, "\tinst_type\t\t%d\n", vmexit->u.vmx.inst_type);
399	fprintf(stderr, "\tinst_error\t\t%d\n", vmexit->u.vmx.inst_error);
400
401	return (VMEXIT_ABORT);
402}
403
404static int
405vmexit_bogus(struct vmctx *ctx, struct vm_exit *vmexit, int *pvcpu)
406{
407
408	stats.vmexit_bogus++;
409
410	return (VMEXIT_RESTART);
411}
412
413static int
414vmexit_hlt(struct vmctx *ctx, struct vm_exit *vmexit, int *pvcpu)
415{
416
417	stats.vmexit_hlt++;
418
419	/*
420	 * Just continue execution with the next instruction. We use
421	 * the HLT VM exit as a way to be friendly with the host
422	 * scheduler.
423	 */
424	return (VMEXIT_CONTINUE);
425}
426
427static int
428vmexit_pause(struct vmctx *ctx, struct vm_exit *vmexit, int *pvcpu)
429{
430
431	stats.vmexit_pause++;
432
433	return (VMEXIT_CONTINUE);
434}
435
436static int
437vmexit_mtrap(struct vmctx *ctx, struct vm_exit *vmexit, int *pvcpu)
438{
439
440	stats.vmexit_mtrap++;
441
442	return (VMEXIT_RESTART);
443}
444
445static int
446vmexit_inst_emul(struct vmctx *ctx, struct vm_exit *vmexit, int *pvcpu)
447{
448	int err;
449	stats.vmexit_inst_emul++;
450
451	err = emulate_mem(ctx, *pvcpu, vmexit->u.inst_emul.gpa,
452			  &vmexit->u.inst_emul.vie);
453
454	if (err) {
455		if (err == EINVAL) {
456			fprintf(stderr,
457			    "Failed to emulate instruction at 0x%lx\n",
458			    vmexit->rip);
459		} else if (err == ESRCH) {
460			fprintf(stderr, "Unhandled memory access to 0x%lx\n",
461			    vmexit->u.inst_emul.gpa);
462		}
463
464		return (VMEXIT_ABORT);
465	}
466
467	return (VMEXIT_CONTINUE);
468}
469
470static vmexit_handler_t handler[VM_EXITCODE_MAX] = {
471	[VM_EXITCODE_INOUT]  = vmexit_inout,
472	[VM_EXITCODE_VMX]    = vmexit_vmx,
473	[VM_EXITCODE_BOGUS]  = vmexit_bogus,
474	[VM_EXITCODE_RDMSR]  = vmexit_rdmsr,
475	[VM_EXITCODE_WRMSR]  = vmexit_wrmsr,
476	[VM_EXITCODE_MTRAP]  = vmexit_mtrap,
477	[VM_EXITCODE_INST_EMUL] = vmexit_inst_emul,
478	[VM_EXITCODE_SPINUP_AP] = vmexit_spinup_ap,
479	[VM_EXITCODE_SPINDOWN_CPU] = vmexit_spindown_cpu,
480};
481
482static void
483vm_loop(struct vmctx *ctx, int vcpu, uint64_t rip)
484{
485	cpuset_t mask;
486	int error, rc, prevcpu;
487	enum vm_exitcode exitcode;
488
489	if (pincpu >= 0) {
490		CPU_ZERO(&mask);
491		CPU_SET(pincpu + vcpu, &mask);
492		error = pthread_setaffinity_np(pthread_self(),
493					       sizeof(mask), &mask);
494		assert(error == 0);
495	}
496
497	while (1) {
498		error = vm_run(ctx, vcpu, rip, &vmexit[vcpu]);
499		if (error != 0)
500			break;
501
502		prevcpu = vcpu;
503
504		exitcode = vmexit[vcpu].exitcode;
505		if (exitcode >= VM_EXITCODE_MAX || handler[exitcode] == NULL) {
506			fprintf(stderr, "vm_loop: unexpected exitcode 0x%x\n",
507			    exitcode);
508			exit(1);
509		}
510
511                rc = (*handler[exitcode])(ctx, &vmexit[vcpu], &vcpu);
512
513		switch (rc) {
514		case VMEXIT_CONTINUE:
515                        rip = vmexit[vcpu].rip + vmexit[vcpu].inst_length;
516			break;
517		case VMEXIT_RESTART:
518                        rip = vmexit[vcpu].rip;
519			break;
520		case VMEXIT_RESET:
521			exit(0);
522		default:
523			exit(1);
524		}
525	}
526	fprintf(stderr, "vm_run error %d, errno %d\n", error, errno);
527}
528
529static int
530num_vcpus_allowed(struct vmctx *ctx)
531{
532	int tmp, error;
533
534	error = vm_get_capability(ctx, BSP, VM_CAP_UNRESTRICTED_GUEST, &tmp);
535
536	/*
537	 * The guest is allowed to spinup more than one processor only if the
538	 * UNRESTRICTED_GUEST capability is available.
539	 */
540	if (error == 0)
541		return (VM_MAXCPU);
542	else
543		return (1);
544}
545
546void
547fbsdrun_set_capabilities(struct vmctx *ctx, int cpu)
548{
549	int err, tmp;
550
551	if (fbsdrun_vmexit_on_hlt()) {
552		err = vm_get_capability(ctx, cpu, VM_CAP_HALT_EXIT, &tmp);
553		if (err < 0) {
554			fprintf(stderr, "VM exit on HLT not supported\n");
555			exit(1);
556		}
557		vm_set_capability(ctx, cpu, VM_CAP_HALT_EXIT, 1);
558		if (cpu == BSP)
559			handler[VM_EXITCODE_HLT] = vmexit_hlt;
560	}
561
562        if (fbsdrun_vmexit_on_pause()) {
563		/*
564		 * pause exit support required for this mode
565		 */
566		err = vm_get_capability(ctx, cpu, VM_CAP_PAUSE_EXIT, &tmp);
567		if (err < 0) {
568			fprintf(stderr,
569			    "SMP mux requested, no pause support\n");
570			exit(1);
571		}
572		vm_set_capability(ctx, cpu, VM_CAP_PAUSE_EXIT, 1);
573		if (cpu == BSP)
574			handler[VM_EXITCODE_PAUSE] = vmexit_pause;
575        }
576
577	if (x2apic_mode)
578		err = vm_set_x2apic_state(ctx, cpu, X2APIC_ENABLED);
579	else
580		err = vm_set_x2apic_state(ctx, cpu, X2APIC_DISABLED);
581
582	if (err) {
583		fprintf(stderr, "Unable to set x2apic state (%d)\n", err);
584		exit(1);
585	}
586
587	vm_set_capability(ctx, cpu, VM_CAP_ENABLE_INVPCID, 1);
588}
589
590int
591main(int argc, char *argv[])
592{
593	int c, error, gdb_port, err, bvmcons;
594	int max_vcpus;
595	struct vmctx *ctx;
596	uint64_t rip;
597	size_t memsize;
598
599	bvmcons = 0;
600	progname = basename(argv[0]);
601	gdb_port = 0;
602	guest_ncpus = 1;
603	memsize = 256 * MB;
604
605	while ((c = getopt(argc, argv, "abehwxAHIPWp:g:c:s:m:l:U:")) != -1) {
606		switch (c) {
607		case 'a':
608			x2apic_mode = 0;
609			break;
610		case 'A':
611			acpi = 1;
612			break;
613		case 'b':
614			bvmcons = 1;
615			break;
616		case 'p':
617			pincpu = atoi(optarg);
618			break;
619                case 'c':
620			guest_ncpus = atoi(optarg);
621			break;
622		case 'g':
623			gdb_port = atoi(optarg);
624			break;
625		case 'l':
626			if (lpc_device_parse(optarg) != 0) {
627				errx(EX_USAGE, "invalid lpc device "
628				    "configuration '%s'", optarg);
629			}
630			break;
631		case 's':
632			if (pci_parse_slot(optarg) != 0)
633				exit(1);
634			else
635				break;
636                case 'm':
637			error = vm_parse_memsize(optarg, &memsize);
638			if (error)
639				errx(EX_USAGE, "invalid memsize '%s'", optarg);
640			break;
641		case 'H':
642			guest_vmexit_on_hlt = 1;
643			break;
644		case 'I':
645			/*
646			 * The "-I" option was used to add an ioapic to the
647			 * virtual machine.
648			 *
649			 * An ioapic is now provided unconditionally for each
650			 * virtual machine and this option is now deprecated.
651			 */
652			break;
653		case 'P':
654			guest_vmexit_on_pause = 1;
655			break;
656		case 'e':
657			strictio = 1;
658			break;
659		case 'U':
660			guest_uuid_str = optarg;
661			break;
662		case 'w':
663			strictmsr = 0;
664			break;
665		case 'W':
666			virtio_msix = 0;
667			break;
668		case 'x':
669			x2apic_mode = 1;
670			break;
671		case 'h':
672			usage(0);
673		default:
674			usage(1);
675		}
676	}
677	argc -= optind;
678	argv += optind;
679
680	if (argc != 1)
681		usage(1);
682
683	vmname = argv[0];
684
685	ctx = vm_open(vmname);
686	if (ctx == NULL) {
687		perror("vm_open");
688		exit(1);
689	}
690
691	max_vcpus = num_vcpus_allowed(ctx);
692	if (guest_ncpus > max_vcpus) {
693		fprintf(stderr, "%d vCPUs requested but only %d available\n",
694			guest_ncpus, max_vcpus);
695		exit(1);
696	}
697
698	fbsdrun_set_capabilities(ctx, BSP);
699
700	err = vm_setup_memory(ctx, memsize, VM_MMAP_ALL);
701	if (err) {
702		fprintf(stderr, "Unable to setup memory (%d)\n", err);
703		exit(1);
704	}
705
706	init_mem();
707	init_inout();
708	ioapic_init(ctx);
709
710	rtc_init(ctx);
711
712	/*
713	 * Exit if a device emulation finds an error in it's initilization
714	 */
715	if (init_pci(ctx) != 0)
716		exit(1);
717
718	if (gdb_port != 0)
719		init_dbgport(gdb_port);
720
721	if (bvmcons)
722		init_bvmcons();
723
724	error = vm_get_register(ctx, BSP, VM_REG_GUEST_RIP, &rip);
725	assert(error == 0);
726
727	/*
728	 * build the guest tables, MP etc.
729	 */
730	mptable_build(ctx, guest_ncpus);
731
732	error = smbios_build(ctx);
733	assert(error == 0);
734
735	if (acpi) {
736		error = acpi_build(ctx, guest_ncpus);
737		assert(error == 0);
738	}
739
740	/*
741	 * Change the proc title to include the VM name.
742	 */
743	setproctitle("%s", vmname);
744
745	/*
746	 * Add CPU 0
747	 */
748	fbsdrun_addcpu(ctx, BSP, rip);
749
750	/*
751	 * Head off to the main event dispatch loop
752	 */
753	mevent_dispatch();
754
755	exit(1);
756}
757