vmm.c revision 241178 
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 * $FreeBSD$
27 */
28
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD$");
31
32#include <sys/param.h>
33#include <sys/systm.h>
34#include <sys/kernel.h>
35#include <sys/module.h>
36#include <sys/sysctl.h>
37#include <sys/malloc.h>
38#include <sys/pcpu.h>
39#include <sys/lock.h>
40#include <sys/mutex.h>
41#include <sys/proc.h>
42#include <sys/sched.h>
43#include <sys/smp.h>
44#include <sys/systm.h>
45
46#include <vm/vm.h>
47
48#include <machine/vm.h>
49#include <machine/pcb.h>
50#include <x86/apicreg.h>
51
52#include <machine/vmm.h>
53#include "vmm_mem.h"
54#include "vmm_util.h"
55#include <machine/vmm_dev.h>
56#include "vlapic.h"
57#include "vmm_msr.h"
58#include "vmm_ipi.h"
59#include "vmm_stat.h"
60
61#include "io/ppt.h"
62#include "io/iommu.h"
63
64struct vlapic;
65
66struct vcpu {
67	int		flags;
68	int		pincpu;		/* host cpuid this vcpu is bound to */
69	int		hostcpu;	/* host cpuid this vcpu last ran on */
70	uint64_t	guest_msrs[VMM_MSR_NUM];
71	struct vlapic	*vlapic;
72	int		 vcpuid;
73	struct savefpu	*guestfpu;	/* guest fpu state */
74	void		*stats;
75	struct vm_exit	exitinfo;
76	enum x2apic_state x2apic_state;
77};
78#define	VCPU_F_PINNED	0x0001
79#define	VCPU_F_RUNNING	0x0002
80
81#define	VCPU_PINCPU(vm, vcpuid)	\
82    ((vm->vcpu[vcpuid].flags & VCPU_F_PINNED) ? vm->vcpu[vcpuid].pincpu : -1)
83
84#define	VCPU_UNPIN(vm, vcpuid)	(vm->vcpu[vcpuid].flags &= ~VCPU_F_PINNED)
85
86#define	VCPU_PIN(vm, vcpuid, host_cpuid)				\
87do {									\
88	vm->vcpu[vcpuid].flags |= VCPU_F_PINNED;			\
89	vm->vcpu[vcpuid].pincpu = host_cpuid;				\
90} while(0)
91
92#define	VM_MAX_MEMORY_SEGMENTS	2
93
94struct vm {
95	void		*cookie;	/* processor-specific data */
96	void		*iommu;		/* iommu-specific data */
97	struct vcpu	vcpu[VM_MAXCPU];
98	int		num_mem_segs;
99	struct vm_memory_segment mem_segs[VM_MAX_MEMORY_SEGMENTS];
100	char		name[VM_MAX_NAMELEN];
101
102	/*
103	 * Set of active vcpus.
104	 * An active vcpu is one that has been started implicitly (BSP) or
105	 * explicitly (AP) by sending it a startup ipi.
106	 */
107	cpuset_t	active_cpus;
108};
109
110static struct vmm_ops *ops;
111#define	VMM_INIT()	(ops != NULL ? (*ops->init)() : 0)
112#define	VMM_CLEANUP()	(ops != NULL ? (*ops->cleanup)() : 0)
113
114#define	VMINIT(vm)	(ops != NULL ? (*ops->vminit)(vm): NULL)
115#define	VMRUN(vmi, vcpu, rip) \
116	(ops != NULL ? (*ops->vmrun)(vmi, vcpu, rip) : ENXIO)
117#define	VMCLEANUP(vmi)	(ops != NULL ? (*ops->vmcleanup)(vmi) : NULL)
118#define	VMMMAP_SET(vmi, gpa, hpa, len, attr, prot, spm)			\
119    	(ops != NULL ? 							\
120    	(*ops->vmmmap_set)(vmi, gpa, hpa, len, attr, prot, spm) :	\
121	ENXIO)
122#define	VMMMAP_GET(vmi, gpa) \
123	(ops != NULL ? (*ops->vmmmap_get)(vmi, gpa) : ENXIO)
124#define	VMGETREG(vmi, vcpu, num, retval)		\
125	(ops != NULL ? (*ops->vmgetreg)(vmi, vcpu, num, retval) : ENXIO)
126#define	VMSETREG(vmi, vcpu, num, val)		\
127	(ops != NULL ? (*ops->vmsetreg)(vmi, vcpu, num, val) : ENXIO)
128#define	VMGETDESC(vmi, vcpu, num, desc)		\
129	(ops != NULL ? (*ops->vmgetdesc)(vmi, vcpu, num, desc) : ENXIO)
130#define	VMSETDESC(vmi, vcpu, num, desc)		\
131	(ops != NULL ? (*ops->vmsetdesc)(vmi, vcpu, num, desc) : ENXIO)
132#define	VMINJECT(vmi, vcpu, type, vec, ec, ecv)	\
133	(ops != NULL ? (*ops->vminject)(vmi, vcpu, type, vec, ec, ecv) : ENXIO)
134#define	VMNMI(vmi, vcpu)	\
135	(ops != NULL ? (*ops->vmnmi)(vmi, vcpu) : ENXIO)
136#define	VMGETCAP(vmi, vcpu, num, retval)	\
137	(ops != NULL ? (*ops->vmgetcap)(vmi, vcpu, num, retval) : ENXIO)
138#define	VMSETCAP(vmi, vcpu, num, val)		\
139	(ops != NULL ? (*ops->vmsetcap)(vmi, vcpu, num, val) : ENXIO)
140
141#define	fpu_start_emulating()	start_emulating()
142#define	fpu_stop_emulating()	stop_emulating()
143
144static MALLOC_DEFINE(M_VM, "vm", "vm");
145CTASSERT(VMM_MSR_NUM <= 64);	/* msr_mask can keep track of up to 64 msrs */
146
147/* statistics */
148static VMM_STAT_DEFINE(VCPU_TOTAL_RUNTIME, "vcpu total runtime");
149
150static void
151vcpu_cleanup(struct vcpu *vcpu)
152{
153	vlapic_cleanup(vcpu->vlapic);
154	vmm_stat_free(vcpu->stats);
155	fpu_save_area_free(vcpu->guestfpu);
156}
157
158static void
159vcpu_init(struct vm *vm, uint32_t vcpu_id)
160{
161	struct vcpu *vcpu;
162
163	vcpu = &vm->vcpu[vcpu_id];
164
165	vcpu->hostcpu = -1;
166	vcpu->vcpuid = vcpu_id;
167	vcpu->vlapic = vlapic_init(vm, vcpu_id);
168	vm_set_x2apic_state(vm, vcpu_id, X2APIC_ENABLED);
169	vcpu->guestfpu = fpu_save_area_alloc();
170	fpu_save_area_reset(vcpu->guestfpu);
171	vcpu->stats = vmm_stat_alloc();
172}
173
174struct vm_exit *
175vm_exitinfo(struct vm *vm, int cpuid)
176{
177	struct vcpu *vcpu;
178
179	if (cpuid < 0 || cpuid >= VM_MAXCPU)
180		panic("vm_exitinfo: invalid cpuid %d", cpuid);
181
182	vcpu = &vm->vcpu[cpuid];
183
184	return (&vcpu->exitinfo);
185}
186
187static int
188vmm_init(void)
189{
190	int error;
191
192	vmm_ipi_init();
193
194	error = vmm_mem_init();
195	if (error)
196		return (error);
197
198	if (vmm_is_intel())
199		ops = &vmm_ops_intel;
200	else if (vmm_is_amd())
201		ops = &vmm_ops_amd;
202	else
203		return (ENXIO);
204
205	vmm_msr_init();
206
207	return (VMM_INIT());
208}
209
210static int
211vmm_handler(module_t mod, int what, void *arg)
212{
213	int error;
214
215	switch (what) {
216	case MOD_LOAD:
217		vmmdev_init();
218		iommu_init();
219		error = vmm_init();
220		break;
221	case MOD_UNLOAD:
222		vmmdev_cleanup();
223		iommu_cleanup();
224		vmm_ipi_cleanup();
225		error = VMM_CLEANUP();
226		break;
227	default:
228		error = 0;
229		break;
230	}
231	return (error);
232}
233
234static moduledata_t vmm_kmod = {
235	"vmm",
236	vmm_handler,
237	NULL
238};
239
240/*
241 * Execute the module load handler after the pci passthru driver has had
242 * a chance to claim devices. We need this information at the time we do
243 * iommu initialization.
244 */
245DECLARE_MODULE(vmm, vmm_kmod, SI_SUB_CONFIGURE + 1, SI_ORDER_ANY);
246MODULE_VERSION(vmm, 1);
247
248SYSCTL_NODE(_hw, OID_AUTO, vmm, CTLFLAG_RW, NULL, NULL);
249
250struct vm *
251vm_create(const char *name)
252{
253	int i;
254	struct vm *vm;
255	vm_paddr_t maxaddr;
256
257	const int BSP = 0;
258
259	if (name == NULL || strlen(name) >= VM_MAX_NAMELEN)
260		return (NULL);
261
262	vm = malloc(sizeof(struct vm), M_VM, M_WAITOK | M_ZERO);
263	strcpy(vm->name, name);
264	vm->cookie = VMINIT(vm);
265
266	for (i = 0; i < VM_MAXCPU; i++) {
267		vcpu_init(vm, i);
268		guest_msrs_init(vm, i);
269	}
270
271	maxaddr = vmm_mem_maxaddr();
272	vm->iommu = iommu_create_domain(maxaddr);
273	vm_activate_cpu(vm, BSP);
274
275	return (vm);
276}
277
278static void
279vm_free_mem_seg(struct vm *vm, struct vm_memory_segment *seg)
280{
281	size_t len;
282	vm_paddr_t hpa;
283
284	len = 0;
285	while (len < seg->len) {
286		hpa = vm_gpa2hpa(vm, seg->gpa + len, PAGE_SIZE);
287		if (hpa == (vm_paddr_t)-1) {
288			panic("vm_free_mem_segs: cannot free hpa "
289			      "associated with gpa 0x%016lx", seg->gpa + len);
290		}
291
292		vmm_mem_free(hpa, PAGE_SIZE);
293
294		len += PAGE_SIZE;
295	}
296
297	bzero(seg, sizeof(struct vm_memory_segment));
298}
299
300void
301vm_destroy(struct vm *vm)
302{
303	int i;
304
305	ppt_unassign_all(vm);
306
307	for (i = 0; i < vm->num_mem_segs; i++)
308		vm_free_mem_seg(vm, &vm->mem_segs[i]);
309
310	vm->num_mem_segs = 0;
311
312	for (i = 0; i < VM_MAXCPU; i++)
313		vcpu_cleanup(&vm->vcpu[i]);
314
315	iommu_destroy_domain(vm->iommu);
316
317	VMCLEANUP(vm->cookie);
318
319	free(vm, M_VM);
320}
321
322const char *
323vm_name(struct vm *vm)
324{
325	return (vm->name);
326}
327
328int
329vm_map_mmio(struct vm *vm, vm_paddr_t gpa, size_t len, vm_paddr_t hpa)
330{
331	const boolean_t spok = TRUE;	/* superpage mappings are ok */
332
333	return (VMMMAP_SET(vm->cookie, gpa, hpa, len, VM_MEMATTR_UNCACHEABLE,
334			   VM_PROT_RW, spok));
335}
336
337int
338vm_unmap_mmio(struct vm *vm, vm_paddr_t gpa, size_t len)
339{
340	const boolean_t spok = TRUE;	/* superpage mappings are ok */
341
342	return (VMMMAP_SET(vm->cookie, gpa, 0, len, 0,
343			   VM_PROT_NONE, spok));
344}
345
346/*
347 * Returns TRUE if 'gpa' is available for allocation and FALSE otherwise
348 */
349static boolean_t
350vm_gpa_available(struct vm *vm, vm_paddr_t gpa)
351{
352	int i;
353	vm_paddr_t gpabase, gpalimit;
354
355	if (gpa & PAGE_MASK)
356		panic("vm_gpa_available: gpa (0x%016lx) not page aligned", gpa);
357
358	for (i = 0; i < vm->num_mem_segs; i++) {
359		gpabase = vm->mem_segs[i].gpa;
360		gpalimit = gpabase + vm->mem_segs[i].len;
361		if (gpa >= gpabase && gpa < gpalimit)
362			return (FALSE);
363	}
364
365	return (TRUE);
366}
367
368int
369vm_malloc(struct vm *vm, vm_paddr_t gpa, size_t len)
370{
371	int error, available, allocated;
372	struct vm_memory_segment *seg;
373	vm_paddr_t g, hpa;
374
375	const boolean_t spok = TRUE;	/* superpage mappings are ok */
376
377	if ((gpa & PAGE_MASK) || (len & PAGE_MASK) || len == 0)
378		return (EINVAL);
379
380	available = allocated = 0;
381	g = gpa;
382	while (g < gpa + len) {
383		if (vm_gpa_available(vm, g))
384			available++;
385		else
386			allocated++;
387
388		g += PAGE_SIZE;
389	}
390
391	/*
392	 * If there are some allocated and some available pages in the address
393	 * range then it is an error.
394	 */
395	if (allocated && available)
396		return (EINVAL);
397
398	/*
399	 * If the entire address range being requested has already been
400	 * allocated then there isn't anything more to do.
401	 */
402	if (allocated && available == 0)
403		return (0);
404
405	if (vm->num_mem_segs >= VM_MAX_MEMORY_SEGMENTS)
406		return (E2BIG);
407
408	seg = &vm->mem_segs[vm->num_mem_segs];
409
410	seg->gpa = gpa;
411	seg->len = 0;
412	while (seg->len < len) {
413		hpa = vmm_mem_alloc(PAGE_SIZE);
414		if (hpa == 0) {
415			error = ENOMEM;
416			break;
417		}
418
419		error = VMMMAP_SET(vm->cookie, gpa + seg->len, hpa, PAGE_SIZE,
420				   VM_MEMATTR_WRITE_BACK, VM_PROT_ALL, spok);
421		if (error)
422			break;
423
424		iommu_create_mapping(vm->iommu, gpa + seg->len, hpa, PAGE_SIZE);
425
426		seg->len += PAGE_SIZE;
427	}
428
429	if (seg->len != len) {
430		vm_free_mem_seg(vm, seg);
431		return (error);
432	}
433
434	vm->num_mem_segs++;
435
436	return (0);
437}
438
439vm_paddr_t
440vm_gpa2hpa(struct vm *vm, vm_paddr_t gpa, size_t len)
441{
442	vm_paddr_t nextpage;
443
444	nextpage = rounddown(gpa + PAGE_SIZE, PAGE_SIZE);
445	if (len > nextpage - gpa)
446		panic("vm_gpa2hpa: invalid gpa/len: 0x%016lx/%lu", gpa, len);
447
448	return (VMMMAP_GET(vm->cookie, gpa));
449}
450
451int
452vm_gpabase2memseg(struct vm *vm, vm_paddr_t gpabase,
453		  struct vm_memory_segment *seg)
454{
455	int i;
456
457	for (i = 0; i < vm->num_mem_segs; i++) {
458		if (gpabase == vm->mem_segs[i].gpa) {
459			*seg = vm->mem_segs[i];
460			return (0);
461		}
462	}
463	return (-1);
464}
465
466int
467vm_get_register(struct vm *vm, int vcpu, int reg, uint64_t *retval)
468{
469
470	if (vcpu < 0 || vcpu >= VM_MAXCPU)
471		return (EINVAL);
472
473	if (reg >= VM_REG_LAST)
474		return (EINVAL);
475
476	return (VMGETREG(vm->cookie, vcpu, reg, retval));
477}
478
479int
480vm_set_register(struct vm *vm, int vcpu, int reg, uint64_t val)
481{
482
483	if (vcpu < 0 || vcpu >= VM_MAXCPU)
484		return (EINVAL);
485
486	if (reg >= VM_REG_LAST)
487		return (EINVAL);
488
489	return (VMSETREG(vm->cookie, vcpu, reg, val));
490}
491
492static boolean_t
493is_descriptor_table(int reg)
494{
495
496	switch (reg) {
497	case VM_REG_GUEST_IDTR:
498	case VM_REG_GUEST_GDTR:
499		return (TRUE);
500	default:
501		return (FALSE);
502	}
503}
504
505static boolean_t
506is_segment_register(int reg)
507{
508
509	switch (reg) {
510	case VM_REG_GUEST_ES:
511	case VM_REG_GUEST_CS:
512	case VM_REG_GUEST_SS:
513	case VM_REG_GUEST_DS:
514	case VM_REG_GUEST_FS:
515	case VM_REG_GUEST_GS:
516	case VM_REG_GUEST_TR:
517	case VM_REG_GUEST_LDTR:
518		return (TRUE);
519	default:
520		return (FALSE);
521	}
522}
523
524int
525vm_get_seg_desc(struct vm *vm, int vcpu, int reg,
526		struct seg_desc *desc)
527{
528
529	if (vcpu < 0 || vcpu >= VM_MAXCPU)
530		return (EINVAL);
531
532	if (!is_segment_register(reg) && !is_descriptor_table(reg))
533		return (EINVAL);
534
535	return (VMGETDESC(vm->cookie, vcpu, reg, desc));
536}
537
538int
539vm_set_seg_desc(struct vm *vm, int vcpu, int reg,
540		struct seg_desc *desc)
541{
542	if (vcpu < 0 || vcpu >= VM_MAXCPU)
543		return (EINVAL);
544
545	if (!is_segment_register(reg) && !is_descriptor_table(reg))
546		return (EINVAL);
547
548	return (VMSETDESC(vm->cookie, vcpu, reg, desc));
549}
550
551int
552vm_get_pinning(struct vm *vm, int vcpuid, int *cpuid)
553{
554
555	if (vcpuid < 0 || vcpuid >= VM_MAXCPU)
556		return (EINVAL);
557
558	*cpuid = VCPU_PINCPU(vm, vcpuid);
559
560	return (0);
561}
562
563int
564vm_set_pinning(struct vm *vm, int vcpuid, int host_cpuid)
565{
566	struct thread *td;
567
568	if (vcpuid < 0 || vcpuid >= VM_MAXCPU)
569		return (EINVAL);
570
571	td = curthread;		/* XXXSMP only safe when muxing vcpus */
572
573	/* unpin */
574	if (host_cpuid < 0) {
575		VCPU_UNPIN(vm, vcpuid);
576		thread_lock(td);
577		sched_unbind(td);
578		thread_unlock(td);
579		return (0);
580	}
581
582	if (CPU_ABSENT(host_cpuid))
583		return (EINVAL);
584
585	/*
586	 * XXX we should check that 'host_cpuid' has not already been pinned
587	 * by another vm.
588	 */
589	thread_lock(td);
590	sched_bind(td, host_cpuid);
591	thread_unlock(td);
592	VCPU_PIN(vm, vcpuid, host_cpuid);
593
594	return (0);
595}
596
597static void
598restore_guest_fpustate(struct vcpu *vcpu)
599{
600
601	/* flush host state to the pcb */
602	fpuexit(curthread);
603	fpu_stop_emulating();
604	fpurestore(vcpu->guestfpu);
605}
606
607static void
608save_guest_fpustate(struct vcpu *vcpu)
609{
610
611	fpusave(vcpu->guestfpu);
612	fpu_start_emulating();
613}
614
615int
616vm_run(struct vm *vm, struct vm_run *vmrun)
617{
618	int error, vcpuid;
619	struct vcpu *vcpu;
620	struct pcb *pcb;
621	uint64_t tscval;
622
623	vcpuid = vmrun->cpuid;
624
625	if (vcpuid < 0 || vcpuid >= VM_MAXCPU)
626		return (EINVAL);
627
628	vcpu = &vm->vcpu[vcpuid];
629
630	critical_enter();
631
632	tscval = rdtsc();
633
634	pcb = PCPU_GET(curpcb);
635	set_pcb_flags(pcb, PCB_FULL_IRET);
636
637	vcpu->hostcpu = curcpu;
638
639	restore_guest_msrs(vm, vcpuid);
640	restore_guest_fpustate(vcpu);
641	error = VMRUN(vm->cookie, vcpuid, vmrun->rip);
642	save_guest_fpustate(vcpu);
643	restore_host_msrs(vm, vcpuid);
644
645	vmm_stat_incr(vm, vcpuid, VCPU_TOTAL_RUNTIME, rdtsc() - tscval);
646
647	/* copy the exit information */
648	bcopy(&vcpu->exitinfo, &vmrun->vm_exit, sizeof(struct vm_exit));
649
650	critical_exit();
651
652	return (error);
653}
654
655int
656vm_inject_event(struct vm *vm, int vcpuid, int type,
657		int vector, uint32_t code, int code_valid)
658{
659	if (vcpuid < 0 || vcpuid >= VM_MAXCPU)
660		return (EINVAL);
661
662	if ((type > VM_EVENT_NONE && type < VM_EVENT_MAX) == 0)
663		return (EINVAL);
664
665	if (vector < 0 || vector > 255)
666		return (EINVAL);
667
668	return (VMINJECT(vm->cookie, vcpuid, type, vector, code, code_valid));
669}
670
671int
672vm_inject_nmi(struct vm *vm, int vcpu)
673{
674	int error;
675
676	if (vcpu < 0 || vcpu >= VM_MAXCPU)
677		return (EINVAL);
678
679	error = VMNMI(vm->cookie, vcpu);
680	vm_interrupt_hostcpu(vm, vcpu);
681	return (error);
682}
683
684int
685vm_get_capability(struct vm *vm, int vcpu, int type, int *retval)
686{
687	if (vcpu < 0 || vcpu >= VM_MAXCPU)
688		return (EINVAL);
689
690	if (type < 0 || type >= VM_CAP_MAX)
691		return (EINVAL);
692
693	return (VMGETCAP(vm->cookie, vcpu, type, retval));
694}
695
696int
697vm_set_capability(struct vm *vm, int vcpu, int type, int val)
698{
699	if (vcpu < 0 || vcpu >= VM_MAXCPU)
700		return (EINVAL);
701
702	if (type < 0 || type >= VM_CAP_MAX)
703		return (EINVAL);
704
705	return (VMSETCAP(vm->cookie, vcpu, type, val));
706}
707
708uint64_t *
709vm_guest_msrs(struct vm *vm, int cpu)
710{
711	return (vm->vcpu[cpu].guest_msrs);
712}
713
714struct vlapic *
715vm_lapic(struct vm *vm, int cpu)
716{
717	return (vm->vcpu[cpu].vlapic);
718}
719
720boolean_t
721vmm_is_pptdev(int bus, int slot, int func)
722{
723	int found, b, s, f, n;
724	char *val, *cp, *cp2;
725
726	/*
727	 * setenv pptdevs "1/2/3 4/5/6 7/8/9 10/11/12"
728	 */
729	found = 0;
730	cp = val = getenv("pptdevs");
731	while (cp != NULL && *cp != '\0') {
732		if ((cp2 = strchr(cp, ' ')) != NULL)
733			*cp2 = '\0';
734
735		n = sscanf(cp, "%d/%d/%d", &b, &s, &f);
736		if (n == 3 && bus == b && slot == s && func == f) {
737			found = 1;
738			break;
739		}
740
741		if (cp2 != NULL)
742			*cp2++ = ' ';
743
744		cp = cp2;
745	}
746	freeenv(val);
747	return (found);
748}
749
750void *
751vm_iommu_domain(struct vm *vm)
752{
753
754	return (vm->iommu);
755}
756
757void
758vm_set_run_state(struct vm *vm, int vcpuid, int state)
759{
760	struct vcpu *vcpu;
761
762	if (vcpuid < 0 || vcpuid >= VM_MAXCPU)
763		panic("vm_set_run_state: invalid vcpuid %d", vcpuid);
764
765	vcpu = &vm->vcpu[vcpuid];
766
767	if (state == VCPU_RUNNING) {
768		if (vcpu->flags & VCPU_F_RUNNING) {
769			panic("vm_set_run_state: %s[%d] is already running",
770			      vm_name(vm), vcpuid);
771		}
772		vcpu->flags |= VCPU_F_RUNNING;
773	} else {
774		if ((vcpu->flags & VCPU_F_RUNNING) == 0) {
775			panic("vm_set_run_state: %s[%d] is already stopped",
776			      vm_name(vm), vcpuid);
777		}
778		vcpu->flags &= ~VCPU_F_RUNNING;
779	}
780}
781
782int
783vm_get_run_state(struct vm *vm, int vcpuid, int *cpuptr)
784{
785	int retval, hostcpu;
786	struct vcpu *vcpu;
787
788	if (vcpuid < 0 || vcpuid >= VM_MAXCPU)
789		panic("vm_get_run_state: invalid vcpuid %d", vcpuid);
790
791	vcpu = &vm->vcpu[vcpuid];
792	if (vcpu->flags & VCPU_F_RUNNING) {
793		retval = VCPU_RUNNING;
794		hostcpu = vcpu->hostcpu;
795	} else {
796		retval = VCPU_STOPPED;
797		hostcpu = -1;
798	}
799
800	if (cpuptr)
801		*cpuptr = hostcpu;
802
803	return (retval);
804}
805
806void
807vm_activate_cpu(struct vm *vm, int vcpuid)
808{
809
810	if (vcpuid >= 0 && vcpuid < VM_MAXCPU)
811		CPU_SET(vcpuid, &vm->active_cpus);
812}
813
814cpuset_t
815vm_active_cpus(struct vm *vm)
816{
817
818	return (vm->active_cpus);
819}
820
821void *
822vcpu_stats(struct vm *vm, int vcpuid)
823{
824
825	return (vm->vcpu[vcpuid].stats);
826}
827
828int
829vm_get_x2apic_state(struct vm *vm, int vcpuid, enum x2apic_state *state)
830{
831	if (vcpuid < 0 || vcpuid >= VM_MAXCPU)
832		return (EINVAL);
833
834	*state = vm->vcpu[vcpuid].x2apic_state;
835
836	return (0);
837}
838
839int
840vm_set_x2apic_state(struct vm *vm, int vcpuid, enum x2apic_state state)
841{
842	if (vcpuid < 0 || vcpuid >= VM_MAXCPU)
843		return (EINVAL);
844
845	if (state < 0 || state >= X2APIC_STATE_LAST)
846		return (EINVAL);
847
848	vm->vcpu[vcpuid].x2apic_state = state;
849
850	vlapic_set_x2apic_state(vm, vcpuid, state);
851
852	return (0);
853}
854