1366f6083SPeter Grehan /*-
24d846d26SWarner Losh * SPDX-License-Identifier: BSD-2-Clause
3c49761ddSPedro F. Giffuni *
4366f6083SPeter Grehan * Copyright (c) 2011 NetApp, Inc.
5366f6083SPeter Grehan * All rights reserved.
6366f6083SPeter Grehan *
7366f6083SPeter Grehan * Redistribution and use in source and binary forms, with or without
8366f6083SPeter Grehan * modification, are permitted provided that the following conditions
9366f6083SPeter Grehan * are met:
10366f6083SPeter Grehan * 1. Redistributions of source code must retain the above copyright
11366f6083SPeter Grehan * notice, this list of conditions and the following disclaimer.
12366f6083SPeter Grehan * 2. Redistributions in binary form must reproduce the above copyright
13366f6083SPeter Grehan * notice, this list of conditions and the following disclaimer in the
14366f6083SPeter Grehan * documentation and/or other materials provided with the distribution.
15366f6083SPeter Grehan *
16366f6083SPeter Grehan * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
17366f6083SPeter Grehan * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18366f6083SPeter Grehan * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19366f6083SPeter Grehan * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
20366f6083SPeter Grehan * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21366f6083SPeter Grehan * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22366f6083SPeter Grehan * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23366f6083SPeter Grehan * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24366f6083SPeter Grehan * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25366f6083SPeter Grehan * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26366f6083SPeter Grehan * SUCH DAMAGE.
27366f6083SPeter Grehan */
28366f6083SPeter Grehan
29366f6083SPeter Grehan #include <sys/cdefs.h>
30483d953aSJohn Baldwin #include "opt_bhyve_snapshot.h"
31483d953aSJohn Baldwin
32366f6083SPeter Grehan #include <sys/param.h>
3338f1b189SPeter Grehan #include <sys/systm.h>
34366f6083SPeter Grehan #include <sys/kernel.h>
35366f6083SPeter Grehan #include <sys/module.h>
36366f6083SPeter Grehan #include <sys/sysctl.h>
37366f6083SPeter Grehan #include <sys/malloc.h>
38366f6083SPeter Grehan #include <sys/pcpu.h>
39366f6083SPeter Grehan #include <sys/lock.h>
40366f6083SPeter Grehan #include <sys/mutex.h>
41366f6083SPeter Grehan #include <sys/proc.h>
42318224bbSNeel Natu #include <sys/rwlock.h>
43366f6083SPeter Grehan #include <sys/sched.h>
44366f6083SPeter Grehan #include <sys/smp.h>
4567b69e76SJohn Baldwin #include <sys/sx.h>
46483d953aSJohn Baldwin #include <sys/vnode.h>
47366f6083SPeter Grehan
48366f6083SPeter Grehan #include <vm/vm.h>
493c48106aSKonstantin Belousov #include <vm/vm_param.h>
503c48106aSKonstantin Belousov #include <vm/vm_extern.h>
51318224bbSNeel Natu #include <vm/vm_object.h>
52318224bbSNeel Natu #include <vm/vm_page.h>
53318224bbSNeel Natu #include <vm/pmap.h>
54318224bbSNeel Natu #include <vm/vm_map.h>
55483d953aSJohn Baldwin #include <vm/vm_pager.h>
56483d953aSJohn Baldwin #include <vm/vm_kern.h>
57483d953aSJohn Baldwin #include <vm/vnode_pager.h>
58483d953aSJohn Baldwin #include <vm/swap_pager.h>
59483d953aSJohn Baldwin #include <vm/uma.h>
60366f6083SPeter Grehan
6163e62d39SJohn Baldwin #include <machine/cpu.h>
62366f6083SPeter Grehan #include <machine/pcb.h>
6375dd3366SNeel Natu #include <machine/smp.h>
64bd50262fSKonstantin Belousov #include <machine/md_var.h>
651c052192SNeel Natu #include <x86/psl.h>
6634a6b2d6SJohn Baldwin #include <x86/apicreg.h>
6715add60dSPeter Grehan #include <x86/ifunc.h>
68366f6083SPeter Grehan
69366f6083SPeter Grehan #include <machine/vmm.h>
70565bbb86SNeel Natu #include <machine/vmm_dev.h>
71e813a873SNeel Natu #include <machine/vmm_instruction_emul.h>
72483d953aSJohn Baldwin #include <machine/vmm_snapshot.h>
73565bbb86SNeel Natu
74d17b5104SNeel Natu #include "vmm_ioport.h"
75318224bbSNeel Natu #include "vmm_ktr.h"
76b01c2033SNeel Natu #include "vmm_host.h"
77366f6083SPeter Grehan #include "vmm_mem.h"
78366f6083SPeter Grehan #include "vmm_util.h"
79762fd208STycho Nightingale #include "vatpic.h"
80e883c9bbSTycho Nightingale #include "vatpit.h"
8108e3ff32SNeel Natu #include "vhpet.h"
82565bbb86SNeel Natu #include "vioapic.h"
83366f6083SPeter Grehan #include "vlapic.h"
84160ef77aSNeel Natu #include "vpmtmr.h"
850dafa5cdSNeel Natu #include "vrtc.h"
86366f6083SPeter Grehan #include "vmm_stat.h"
87f76fc5d4SNeel Natu #include "vmm_lapic.h"
88366f6083SPeter Grehan
89366f6083SPeter Grehan #include "io/ppt.h"
90366f6083SPeter Grehan #include "io/iommu.h"
91366f6083SPeter Grehan
92366f6083SPeter Grehan struct vlapic;
93366f6083SPeter Grehan
945fcf252fSNeel Natu /*
955fcf252fSNeel Natu * Initialization:
965fcf252fSNeel Natu * (a) allocated when vcpu is created
975fcf252fSNeel Natu * (i) initialized when vcpu is created and when it is reinitialized
985fcf252fSNeel Natu * (o) initialized the first time the vcpu is created
995fcf252fSNeel Natu * (x) initialized before use
1005fcf252fSNeel Natu */
101366f6083SPeter Grehan struct vcpu {
1025fcf252fSNeel Natu struct mtx mtx; /* (o) protects 'state' and 'hostcpu' */
1035fcf252fSNeel Natu enum vcpu_state state; /* (o) vcpu state */
104950af9ffSJohn Baldwin int vcpuid; /* (o) */
1055fcf252fSNeel Natu int hostcpu; /* (o) vcpu's host cpu */
106248e6799SNeel Natu int reqidle; /* (i) request vcpu to idle */
107950af9ffSJohn Baldwin struct vm *vm; /* (o) */
1081aa51504SJohn Baldwin void *cookie; /* (i) cpu-specific data */
1095fcf252fSNeel Natu struct vlapic *vlapic; /* (i) APIC device model */
1105fcf252fSNeel Natu enum x2apic_state x2apic_state; /* (i) APIC mode */
111091d4532SNeel Natu uint64_t exitintinfo; /* (i) events pending at VM exit */
1125fcf252fSNeel Natu int nmi_pending; /* (i) NMI pending */
1135fcf252fSNeel Natu int extint_pending; /* (i) INTR pending */
1145fcf252fSNeel Natu int exception_pending; /* (i) exception pending */
115c9c75df4SNeel Natu int exc_vector; /* (x) exception collateral */
116c9c75df4SNeel Natu int exc_errcode_valid;
117c9c75df4SNeel Natu uint32_t exc_errcode;
1185fcf252fSNeel Natu struct savefpu *guestfpu; /* (a,i) guest fpu state */
1195fcf252fSNeel Natu uint64_t guest_xcr0; /* (i) guest %xcr0 register */
1205fcf252fSNeel Natu void *stats; /* (a,i) statistics */
1215fcf252fSNeel Natu struct vm_exit exitinfo; /* (x) exit reason and collateral */
122e17eca32SMark Johnston cpuset_t exitinfo_cpuset; /* (x) storage for vmexit handlers */
123d087a399SNeel Natu uint64_t nextrip; /* (x) next instruction to execute */
124483d953aSJohn Baldwin uint64_t tsc_offset; /* (o) TSC offsetting */
125366f6083SPeter Grehan };
126366f6083SPeter Grehan
127f76fc5d4SNeel Natu #define vcpu_lock_init(v) mtx_init(&((v)->mtx), "vcpu lock", 0, MTX_SPIN)
12808ebb360SJohn Baldwin #define vcpu_lock_destroy(v) mtx_destroy(&((v)->mtx))
129f76fc5d4SNeel Natu #define vcpu_lock(v) mtx_lock_spin(&((v)->mtx))
130f76fc5d4SNeel Natu #define vcpu_unlock(v) mtx_unlock_spin(&((v)->mtx))
131318224bbSNeel Natu #define vcpu_assert_locked(v) mtx_assert(&((v)->mtx), MA_OWNED)
13275dd3366SNeel Natu
133318224bbSNeel Natu struct mem_seg {
1349b1aa8d6SNeel Natu size_t len;
1359b1aa8d6SNeel Natu bool sysmem;
1369b1aa8d6SNeel Natu struct vm_object *object;
1379b1aa8d6SNeel Natu };
138e47fe318SCorvin Köhne #define VM_MAX_MEMSEGS 4
1399b1aa8d6SNeel Natu
1409b1aa8d6SNeel Natu struct mem_map {
141318224bbSNeel Natu vm_paddr_t gpa;
142318224bbSNeel Natu size_t len;
1439b1aa8d6SNeel Natu vm_ooffset_t segoff;
1449b1aa8d6SNeel Natu int segid;
1459b1aa8d6SNeel Natu int prot;
1469b1aa8d6SNeel Natu int flags;
147318224bbSNeel Natu };
14800d3723fSConrad Meyer #define VM_MAX_MEMMAPS 8
149366f6083SPeter Grehan
150366f6083SPeter Grehan /*
1515fcf252fSNeel Natu * Initialization:
1525fcf252fSNeel Natu * (o) initialized the first time the VM is created
1535fcf252fSNeel Natu * (i) initialized when VM is created and when it is reinitialized
1545fcf252fSNeel Natu * (x) initialized before use
15567b69e76SJohn Baldwin *
15667b69e76SJohn Baldwin * Locking:
15767b69e76SJohn Baldwin * [m] mem_segs_lock
15867b69e76SJohn Baldwin * [r] rendezvous_mtx
15967b69e76SJohn Baldwin * [v] reads require one frozen vcpu, writes require freezing all vcpus
160366f6083SPeter Grehan */
1615fcf252fSNeel Natu struct vm {
1625fcf252fSNeel Natu void *cookie; /* (i) cpu-specific data */
1635fcf252fSNeel Natu void *iommu; /* (x) iommu-specific data */
1645fcf252fSNeel Natu struct vhpet *vhpet; /* (i) virtual HPET */
1655fcf252fSNeel Natu struct vioapic *vioapic; /* (i) virtual ioapic */
1665fcf252fSNeel Natu struct vatpic *vatpic; /* (i) virtual atpic */
1675fcf252fSNeel Natu struct vatpit *vatpit; /* (i) virtual atpit */
168160ef77aSNeel Natu struct vpmtmr *vpmtmr; /* (i) virtual ACPI PM timer */
1690dafa5cdSNeel Natu struct vrtc *vrtc; /* (o) virtual RTC */
1705fcf252fSNeel Natu volatile cpuset_t active_cpus; /* (i) active vcpus */
171fc276d92SJohn Baldwin volatile cpuset_t debug_cpus; /* (i) vcpus stopped for debug */
172c0f35dbfSJohn Baldwin cpuset_t startup_cpus; /* (i) [r] waiting for startup */
1735fcf252fSNeel Natu int suspend; /* (i) stop VM execution */
17498568a00SJohn Baldwin bool dying; /* (o) is dying */
1755fcf252fSNeel Natu volatile cpuset_t suspended_cpus; /* (i) suspended vcpus */
1765fcf252fSNeel Natu volatile cpuset_t halted_cpus; /* (x) cpus in a hard halt */
17767b69e76SJohn Baldwin cpuset_t rendezvous_req_cpus; /* (x) [r] rendezvous requested */
17867b69e76SJohn Baldwin cpuset_t rendezvous_done_cpus; /* (x) [r] rendezvous finished */
17967b69e76SJohn Baldwin void *rendezvous_arg; /* (x) [r] rendezvous func/arg */
1805b8a8cd1SNeel Natu vm_rendezvous_func_t rendezvous_func;
1815fcf252fSNeel Natu struct mtx rendezvous_mtx; /* (o) rendezvous lock */
18267b69e76SJohn Baldwin struct mem_map mem_maps[VM_MAX_MEMMAPS]; /* (i) [m+v] guest address space */
18367b69e76SJohn Baldwin struct mem_seg mem_segs[VM_MAX_MEMSEGS]; /* (o) [m+v] guest memory regions */
1845fcf252fSNeel Natu struct vmspace *vmspace; /* (o) guest's address space */
185df95cc76SKa Ho Ng char name[VM_MAX_NAMELEN+1]; /* (o) virtual machine name */
186ee98f99dSJohn Baldwin struct vcpu **vcpu; /* (o) guest vcpus */
18701d822d3SRodney W. Grimes /* The following describe the vm cpu topology */
18801d822d3SRodney W. Grimes uint16_t sockets; /* (o) num of sockets */
18901d822d3SRodney W. Grimes uint16_t cores; /* (o) num of cores/socket */
19001d822d3SRodney W. Grimes uint16_t threads; /* (o) num of threads/core */
19101d822d3SRodney W. Grimes uint16_t maxcpus; /* (o) max pluggable cpus */
19267b69e76SJohn Baldwin struct sx mem_segs_lock; /* (o) */
19398568a00SJohn Baldwin struct sx vcpus_init_lock; /* (o) */
194366f6083SPeter Grehan };
195366f6083SPeter Grehan
196950af9ffSJohn Baldwin #define VMM_CTR0(vcpu, format) \
197950af9ffSJohn Baldwin VCPU_CTR0((vcpu)->vm, (vcpu)->vcpuid, format)
198950af9ffSJohn Baldwin
199950af9ffSJohn Baldwin #define VMM_CTR1(vcpu, format, p1) \
200950af9ffSJohn Baldwin VCPU_CTR1((vcpu)->vm, (vcpu)->vcpuid, format, p1)
201950af9ffSJohn Baldwin
202950af9ffSJohn Baldwin #define VMM_CTR2(vcpu, format, p1, p2) \
203950af9ffSJohn Baldwin VCPU_CTR2((vcpu)->vm, (vcpu)->vcpuid, format, p1, p2)
204950af9ffSJohn Baldwin
205950af9ffSJohn Baldwin #define VMM_CTR3(vcpu, format, p1, p2, p3) \
206950af9ffSJohn Baldwin VCPU_CTR3((vcpu)->vm, (vcpu)->vcpuid, format, p1, p2, p3)
207950af9ffSJohn Baldwin
208950af9ffSJohn Baldwin #define VMM_CTR4(vcpu, format, p1, p2, p3, p4) \
209950af9ffSJohn Baldwin VCPU_CTR4((vcpu)->vm, (vcpu)->vcpuid, format, p1, p2, p3, p4)
210950af9ffSJohn Baldwin
211d5408b1dSNeel Natu static int vmm_initialized;
212d5408b1dSNeel Natu
21315add60dSPeter Grehan static void vmmops_panic(void);
214366f6083SPeter Grehan
21515add60dSPeter Grehan static void
vmmops_panic(void)21615add60dSPeter Grehan vmmops_panic(void)
21715add60dSPeter Grehan {
21815add60dSPeter Grehan panic("vmm_ops func called when !vmm_is_intel() && !vmm_is_svm()");
21915add60dSPeter Grehan }
22015add60dSPeter Grehan
22115add60dSPeter Grehan #define DEFINE_VMMOPS_IFUNC(ret_type, opname, args) \
22215add60dSPeter Grehan DEFINE_IFUNC(static, ret_type, vmmops_##opname, args) \
22315add60dSPeter Grehan { \
22415add60dSPeter Grehan if (vmm_is_intel()) \
22515add60dSPeter Grehan return (vmm_ops_intel.opname); \
22615add60dSPeter Grehan else if (vmm_is_svm()) \
22715add60dSPeter Grehan return (vmm_ops_amd.opname); \
22815add60dSPeter Grehan else \
22915add60dSPeter Grehan return ((ret_type (*)args)vmmops_panic); \
23015add60dSPeter Grehan }
23115add60dSPeter Grehan
23215add60dSPeter Grehan DEFINE_VMMOPS_IFUNC(int, modinit, (int ipinum))
23315add60dSPeter Grehan DEFINE_VMMOPS_IFUNC(int, modcleanup, (void))
23415add60dSPeter Grehan DEFINE_VMMOPS_IFUNC(void, modresume, (void))
23515add60dSPeter Grehan DEFINE_VMMOPS_IFUNC(void *, init, (struct vm *vm, struct pmap *pmap))
236869c8d19SJohn Baldwin DEFINE_VMMOPS_IFUNC(int, run, (void *vcpui, register_t rip, struct pmap *pmap,
237869c8d19SJohn Baldwin struct vm_eventinfo *info))
23815add60dSPeter Grehan DEFINE_VMMOPS_IFUNC(void, cleanup, (void *vmi))
239950af9ffSJohn Baldwin DEFINE_VMMOPS_IFUNC(void *, vcpu_init, (void *vmi, struct vcpu *vcpu,
240950af9ffSJohn Baldwin int vcpu_id))
241869c8d19SJohn Baldwin DEFINE_VMMOPS_IFUNC(void, vcpu_cleanup, (void *vcpui))
242869c8d19SJohn Baldwin DEFINE_VMMOPS_IFUNC(int, getreg, (void *vcpui, int num, uint64_t *retval))
243869c8d19SJohn Baldwin DEFINE_VMMOPS_IFUNC(int, setreg, (void *vcpui, int num, uint64_t val))
244869c8d19SJohn Baldwin DEFINE_VMMOPS_IFUNC(int, getdesc, (void *vcpui, int num, struct seg_desc *desc))
245869c8d19SJohn Baldwin DEFINE_VMMOPS_IFUNC(int, setdesc, (void *vcpui, int num, struct seg_desc *desc))
246869c8d19SJohn Baldwin DEFINE_VMMOPS_IFUNC(int, getcap, (void *vcpui, int num, int *retval))
247869c8d19SJohn Baldwin DEFINE_VMMOPS_IFUNC(int, setcap, (void *vcpui, int num, int val))
24815add60dSPeter Grehan DEFINE_VMMOPS_IFUNC(struct vmspace *, vmspace_alloc, (vm_offset_t min,
24915add60dSPeter Grehan vm_offset_t max))
25015add60dSPeter Grehan DEFINE_VMMOPS_IFUNC(void, vmspace_free, (struct vmspace *vmspace))
251869c8d19SJohn Baldwin DEFINE_VMMOPS_IFUNC(struct vlapic *, vlapic_init, (void *vcpui))
252869c8d19SJohn Baldwin DEFINE_VMMOPS_IFUNC(void, vlapic_cleanup, (struct vlapic *vlapic))
253483d953aSJohn Baldwin #ifdef BHYVE_SNAPSHOT
254869c8d19SJohn Baldwin DEFINE_VMMOPS_IFUNC(int, vcpu_snapshot, (void *vcpui,
255869c8d19SJohn Baldwin struct vm_snapshot_meta *meta))
256869c8d19SJohn Baldwin DEFINE_VMMOPS_IFUNC(int, restore_tsc, (void *vcpui, uint64_t now))
257483d953aSJohn Baldwin #endif
258366f6083SPeter Grehan
2596ac73777STycho Nightingale SDT_PROVIDER_DEFINE(vmm);
2606ac73777STycho Nightingale
261366f6083SPeter Grehan static MALLOC_DEFINE(M_VM, "vm", "vm");
262366f6083SPeter Grehan
263366f6083SPeter Grehan /* statistics */
26461592433SNeel Natu static VMM_STAT(VCPU_TOTAL_RUNTIME, "vcpu total runtime");
265366f6083SPeter Grehan
266b40598c5SPawel Biernacki SYSCTL_NODE(_hw, OID_AUTO, vmm, CTLFLAG_RW | CTLFLAG_MPSAFE, NULL,
267b40598c5SPawel Biernacki NULL);
268add611fdSNeel Natu
269055fc2cbSNeel Natu /*
270055fc2cbSNeel Natu * Halt the guest if all vcpus are executing a HLT instruction with
271055fc2cbSNeel Natu * interrupts disabled.
272055fc2cbSNeel Natu */
273055fc2cbSNeel Natu static int halt_detection_enabled = 1;
274055fc2cbSNeel Natu SYSCTL_INT(_hw_vmm, OID_AUTO, halt_detection, CTLFLAG_RDTUN,
275055fc2cbSNeel Natu &halt_detection_enabled, 0,
276055fc2cbSNeel Natu "Halt VM if all vcpus execute HLT with interrupts disabled");
277055fc2cbSNeel Natu
278978f3da1SAndriy Gapon static int vmm_ipinum;
279add611fdSNeel Natu SYSCTL_INT(_hw_vmm, OID_AUTO, ipinum, CTLFLAG_RD, &vmm_ipinum, 0,
280add611fdSNeel Natu "IPI vector used for vcpu notifications");
281add611fdSNeel Natu
282b0538143SNeel Natu static int trace_guest_exceptions;
283b0538143SNeel Natu SYSCTL_INT(_hw_vmm, OID_AUTO, trace_guest_exceptions, CTLFLAG_RDTUN,
284b0538143SNeel Natu &trace_guest_exceptions, 0,
285b0538143SNeel Natu "Trap into hypervisor on all guest exceptions and reflect them back");
286b0538143SNeel Natu
2873ba952e1SCorvin Köhne static int trap_wbinvd;
2883ba952e1SCorvin Köhne SYSCTL_INT(_hw_vmm, OID_AUTO, trap_wbinvd, CTLFLAG_RDTUN, &trap_wbinvd, 0,
2893ba952e1SCorvin Köhne "WBINVD triggers a VM-exit");
2903ba952e1SCorvin Köhne
291ee98f99dSJohn Baldwin u_int vm_maxcpu;
292ee98f99dSJohn Baldwin SYSCTL_UINT(_hw_vmm, OID_AUTO, maxcpu, CTLFLAG_RDTUN | CTLFLAG_NOFETCH,
293ee98f99dSJohn Baldwin &vm_maxcpu, 0, "Maximum number of vCPUs");
294ee98f99dSJohn Baldwin
2959b1aa8d6SNeel Natu static void vm_free_memmap(struct vm *vm, int ident);
2969b1aa8d6SNeel Natu static bool sysmem_mapping(struct vm *vm, struct mem_map *mm);
297248e6799SNeel Natu static void vcpu_notify_event_locked(struct vcpu *vcpu, bool lapic_intr);
298248e6799SNeel Natu
299ee98f99dSJohn Baldwin /*
300ee98f99dSJohn Baldwin * Upper limit on vm_maxcpu. Limited by use of uint16_t types for CPU
301ee98f99dSJohn Baldwin * counts as well as range of vpid values for VT-x and by the capacity
302ee98f99dSJohn Baldwin * of cpuset_t masks. The call to new_unrhdr() in vpid_init() in
303ee98f99dSJohn Baldwin * vmx.c requires 'vm_maxcpu + 1 <= 0xffff', hence the '- 1' below.
304ee98f99dSJohn Baldwin */
305ee98f99dSJohn Baldwin #define VM_MAXCPU MIN(0xffff - 1, CPU_SETSIZE)
306ee98f99dSJohn Baldwin
307248e6799SNeel Natu #ifdef KTR
308248e6799SNeel Natu static const char *
vcpu_state2str(enum vcpu_state state)309248e6799SNeel Natu vcpu_state2str(enum vcpu_state state)
310248e6799SNeel Natu {
311248e6799SNeel Natu
312248e6799SNeel Natu switch (state) {
313248e6799SNeel Natu case VCPU_IDLE:
314248e6799SNeel Natu return ("idle");
315248e6799SNeel Natu case VCPU_FROZEN:
316248e6799SNeel Natu return ("frozen");
317248e6799SNeel Natu case VCPU_RUNNING:
318248e6799SNeel Natu return ("running");
319248e6799SNeel Natu case VCPU_SLEEPING:
320248e6799SNeel Natu return ("sleeping");
321248e6799SNeel Natu default:
322248e6799SNeel Natu return ("unknown");
323248e6799SNeel Natu }
324248e6799SNeel Natu }
325248e6799SNeel Natu #endif
326248e6799SNeel Natu
327366f6083SPeter Grehan static void
vcpu_cleanup(struct vcpu * vcpu,bool destroy)32898568a00SJohn Baldwin vcpu_cleanup(struct vcpu *vcpu, bool destroy)
329366f6083SPeter Grehan {
330869c8d19SJohn Baldwin vmmops_vlapic_cleanup(vcpu->vlapic);
331869c8d19SJohn Baldwin vmmops_vcpu_cleanup(vcpu->cookie);
3321aa51504SJohn Baldwin vcpu->cookie = NULL;
3335fcf252fSNeel Natu if (destroy) {
334366f6083SPeter Grehan vmm_stat_free(vcpu->stats);
33538f1b189SPeter Grehan fpu_save_area_free(vcpu->guestfpu);
33608ebb360SJohn Baldwin vcpu_lock_destroy(vcpu);
337af3b48e1SJohn Baldwin free(vcpu, M_VM);
338366f6083SPeter Grehan }
3395fcf252fSNeel Natu }
340366f6083SPeter Grehan
34198568a00SJohn Baldwin static struct vcpu *
vcpu_alloc(struct vm * vm,int vcpu_id)34298568a00SJohn Baldwin vcpu_alloc(struct vm *vm, int vcpu_id)
343366f6083SPeter Grehan {
344366f6083SPeter Grehan struct vcpu *vcpu;
345366f6083SPeter Grehan
346a488c9c9SRodney W. Grimes KASSERT(vcpu_id >= 0 && vcpu_id < vm->maxcpus,
3475fcf252fSNeel Natu ("vcpu_init: invalid vcpu %d", vcpu_id));
3485fcf252fSNeel Natu
34998568a00SJohn Baldwin vcpu = malloc(sizeof(*vcpu), M_VM, M_WAITOK | M_ZERO);
35075dd3366SNeel Natu vcpu_lock_init(vcpu);
3515fcf252fSNeel Natu vcpu->state = VCPU_IDLE;
35275dd3366SNeel Natu vcpu->hostcpu = NOCPU;
353950af9ffSJohn Baldwin vcpu->vcpuid = vcpu_id;
354950af9ffSJohn Baldwin vcpu->vm = vm;
3555fcf252fSNeel Natu vcpu->guestfpu = fpu_save_area_alloc();
3565fcf252fSNeel Natu vcpu->stats = vmm_stat_alloc();
357483d953aSJohn Baldwin vcpu->tsc_offset = 0;
35898568a00SJohn Baldwin return (vcpu);
3595fcf252fSNeel Natu }
3605fcf252fSNeel Natu
36198568a00SJohn Baldwin static void
vcpu_init(struct vcpu * vcpu)36298568a00SJohn Baldwin vcpu_init(struct vcpu *vcpu)
36398568a00SJohn Baldwin {
36498568a00SJohn Baldwin vcpu->cookie = vmmops_vcpu_init(vcpu->vm->cookie, vcpu, vcpu->vcpuid);
365869c8d19SJohn Baldwin vcpu->vlapic = vmmops_vlapic_init(vcpu->cookie);
3663f0f4b15SJohn Baldwin vm_set_x2apic_state(vcpu, X2APIC_DISABLED);
367248e6799SNeel Natu vcpu->reqidle = 0;
368091d4532SNeel Natu vcpu->exitintinfo = 0;
3695fcf252fSNeel Natu vcpu->nmi_pending = 0;
3705fcf252fSNeel Natu vcpu->extint_pending = 0;
3715fcf252fSNeel Natu vcpu->exception_pending = 0;
372abb023fbSJohn Baldwin vcpu->guest_xcr0 = XFEATURE_ENABLED_X87;
37338f1b189SPeter Grehan fpu_save_area_reset(vcpu->guestfpu);
3745fcf252fSNeel Natu vmm_stat_init(vcpu->stats);
375366f6083SPeter Grehan }
376366f6083SPeter Grehan
377b0538143SNeel Natu int
vcpu_trace_exceptions(struct vcpu * vcpu)37880cb5d84SJohn Baldwin vcpu_trace_exceptions(struct vcpu *vcpu)
379b0538143SNeel Natu {
380b0538143SNeel Natu
381b0538143SNeel Natu return (trace_guest_exceptions);
382b0538143SNeel Natu }
383b0538143SNeel Natu
3843ba952e1SCorvin Köhne int
vcpu_trap_wbinvd(struct vcpu * vcpu)38580cb5d84SJohn Baldwin vcpu_trap_wbinvd(struct vcpu *vcpu)
3863ba952e1SCorvin Köhne {
3873ba952e1SCorvin Köhne return (trap_wbinvd);
3883ba952e1SCorvin Köhne }
3893ba952e1SCorvin Köhne
39098ed632cSNeel Natu struct vm_exit *
vm_exitinfo(struct vcpu * vcpu)39180cb5d84SJohn Baldwin vm_exitinfo(struct vcpu *vcpu)
39298ed632cSNeel Natu {
39398ed632cSNeel Natu return (&vcpu->exitinfo);
39498ed632cSNeel Natu }
39598ed632cSNeel Natu
396e17eca32SMark Johnston cpuset_t *
vm_exitinfo_cpuset(struct vcpu * vcpu)397e17eca32SMark Johnston vm_exitinfo_cpuset(struct vcpu *vcpu)
398e17eca32SMark Johnston {
399e17eca32SMark Johnston return (&vcpu->exitinfo_cpuset);
400e17eca32SMark Johnston }
401e17eca32SMark Johnston
402366f6083SPeter Grehan static int
vmm_init(void)403366f6083SPeter Grehan vmm_init(void)
404366f6083SPeter Grehan {
405366f6083SPeter Grehan int error;
406366f6083SPeter Grehan
40715add60dSPeter Grehan if (!vmm_is_hw_supported())
40815add60dSPeter Grehan return (ENXIO);
40915add60dSPeter Grehan
410ee98f99dSJohn Baldwin vm_maxcpu = mp_ncpus;
411ee98f99dSJohn Baldwin TUNABLE_INT_FETCH("hw.vmm.maxcpu", &vm_maxcpu);
412ee98f99dSJohn Baldwin
413ee98f99dSJohn Baldwin if (vm_maxcpu > VM_MAXCPU) {
414ee98f99dSJohn Baldwin printf("vmm: vm_maxcpu clamped to %u\n", VM_MAXCPU);
415ee98f99dSJohn Baldwin vm_maxcpu = VM_MAXCPU;
416ee98f99dSJohn Baldwin }
417ee98f99dSJohn Baldwin if (vm_maxcpu == 0)
418ee98f99dSJohn Baldwin vm_maxcpu = 1;
419ee98f99dSJohn Baldwin
420b01c2033SNeel Natu vmm_host_state_init();
421add611fdSNeel Natu
422bd50262fSKonstantin Belousov vmm_ipinum = lapic_ipi_alloc(pti ? &IDTVEC(justreturn1_pti) :
423bd50262fSKonstantin Belousov &IDTVEC(justreturn));
42418a2b08eSNeel Natu if (vmm_ipinum < 0)
425add611fdSNeel Natu vmm_ipinum = IPI_AST;
426366f6083SPeter Grehan
427366f6083SPeter Grehan error = vmm_mem_init();
428366f6083SPeter Grehan if (error)
429366f6083SPeter Grehan return (error);
430366f6083SPeter Grehan
43115add60dSPeter Grehan vmm_resume_p = vmmops_modresume;
432366f6083SPeter Grehan
43315add60dSPeter Grehan return (vmmops_modinit(vmm_ipinum));
434366f6083SPeter Grehan }
435366f6083SPeter Grehan
436366f6083SPeter Grehan static int
vmm_handler(module_t mod,int what,void * arg)437366f6083SPeter Grehan vmm_handler(module_t mod, int what, void *arg)
438366f6083SPeter Grehan {
439366f6083SPeter Grehan int error;
440366f6083SPeter Grehan
441366f6083SPeter Grehan switch (what) {
442366f6083SPeter Grehan case MOD_LOAD:
44315add60dSPeter Grehan if (vmm_is_hw_supported()) {
444366f6083SPeter Grehan vmmdev_init();
445366f6083SPeter Grehan error = vmm_init();
446d5408b1dSNeel Natu if (error == 0)
447d5408b1dSNeel Natu vmm_initialized = 1;
44815add60dSPeter Grehan } else {
44915add60dSPeter Grehan error = ENXIO;
45015add60dSPeter Grehan }
451366f6083SPeter Grehan break;
452366f6083SPeter Grehan case MOD_UNLOAD:
45315add60dSPeter Grehan if (vmm_is_hw_supported()) {
454cdc5b9e7SNeel Natu error = vmmdev_cleanup();
455cdc5b9e7SNeel Natu if (error == 0) {
45663e62d39SJohn Baldwin vmm_resume_p = NULL;
457366f6083SPeter Grehan iommu_cleanup();
458add611fdSNeel Natu if (vmm_ipinum != IPI_AST)
45918a2b08eSNeel Natu lapic_ipi_free(vmm_ipinum);
46015add60dSPeter Grehan error = vmmops_modcleanup();
46181ef6611SPeter Grehan /*
46281ef6611SPeter Grehan * Something bad happened - prevent new
46381ef6611SPeter Grehan * VMs from being created
46481ef6611SPeter Grehan */
46581ef6611SPeter Grehan if (error)
466d5408b1dSNeel Natu vmm_initialized = 0;
46781ef6611SPeter Grehan }
46815add60dSPeter Grehan } else {
46915add60dSPeter Grehan error = 0;
47015add60dSPeter Grehan }
471366f6083SPeter Grehan break;
472366f6083SPeter Grehan default:
473366f6083SPeter Grehan error = 0;
474366f6083SPeter Grehan break;
475366f6083SPeter Grehan }
476366f6083SPeter Grehan return (error);
477366f6083SPeter Grehan }
478366f6083SPeter Grehan
479366f6083SPeter Grehan static moduledata_t vmm_kmod = {
480366f6083SPeter Grehan "vmm",
481366f6083SPeter Grehan vmm_handler,
482366f6083SPeter Grehan NULL
483366f6083SPeter Grehan };
484366f6083SPeter Grehan
485366f6083SPeter Grehan /*
486e3f0800bSNeel Natu * vmm initialization has the following dependencies:
487e3f0800bSNeel Natu *
488e3f0800bSNeel Natu * - VT-x initialization requires smp_rendezvous() and therefore must happen
489e3f0800bSNeel Natu * after SMP is fully functional (after SI_SUB_SMP).
490366f6083SPeter Grehan */
491e3f0800bSNeel Natu DECLARE_MODULE(vmm, vmm_kmod, SI_SUB_SMP + 1, SI_ORDER_ANY);
492366f6083SPeter Grehan MODULE_VERSION(vmm, 1);
493366f6083SPeter Grehan
4945fcf252fSNeel Natu static void
vm_init(struct vm * vm,bool create)4955fcf252fSNeel Natu vm_init(struct vm *vm, bool create)
4965fcf252fSNeel Natu {
49715add60dSPeter Grehan vm->cookie = vmmops_init(vm, vmspace_pmap(vm->vmspace));
4985fcf252fSNeel Natu vm->iommu = NULL;
4995fcf252fSNeel Natu vm->vioapic = vioapic_init(vm);
5005fcf252fSNeel Natu vm->vhpet = vhpet_init(vm);
5015fcf252fSNeel Natu vm->vatpic = vatpic_init(vm);
5025fcf252fSNeel Natu vm->vatpit = vatpit_init(vm);
503160ef77aSNeel Natu vm->vpmtmr = vpmtmr_init(vm);
5040dafa5cdSNeel Natu if (create)
5050dafa5cdSNeel Natu vm->vrtc = vrtc_init(vm);
5065fcf252fSNeel Natu
5075fcf252fSNeel Natu CPU_ZERO(&vm->active_cpus);
508fc276d92SJohn Baldwin CPU_ZERO(&vm->debug_cpus);
509c0f35dbfSJohn Baldwin CPU_ZERO(&vm->startup_cpus);
5105fcf252fSNeel Natu
5115fcf252fSNeel Natu vm->suspend = 0;
5125fcf252fSNeel Natu CPU_ZERO(&vm->suspended_cpus);
5135fcf252fSNeel Natu
51498568a00SJohn Baldwin if (!create) {
51598568a00SJohn Baldwin for (int i = 0; i < vm->maxcpus; i++) {
51698568a00SJohn Baldwin if (vm->vcpu[i] != NULL)
51798568a00SJohn Baldwin vcpu_init(vm->vcpu[i]);
51898568a00SJohn Baldwin }
51998568a00SJohn Baldwin }
52098568a00SJohn Baldwin }
52198568a00SJohn Baldwin
52298568a00SJohn Baldwin void
vm_disable_vcpu_creation(struct vm * vm)52398568a00SJohn Baldwin vm_disable_vcpu_creation(struct vm *vm)
52498568a00SJohn Baldwin {
52598568a00SJohn Baldwin sx_xlock(&vm->vcpus_init_lock);
52698568a00SJohn Baldwin vm->dying = true;
52798568a00SJohn Baldwin sx_xunlock(&vm->vcpus_init_lock);
52898568a00SJohn Baldwin }
52998568a00SJohn Baldwin
53098568a00SJohn Baldwin struct vcpu *
vm_alloc_vcpu(struct vm * vm,int vcpuid)53198568a00SJohn Baldwin vm_alloc_vcpu(struct vm *vm, int vcpuid)
53298568a00SJohn Baldwin {
53398568a00SJohn Baldwin struct vcpu *vcpu;
53498568a00SJohn Baldwin
53598568a00SJohn Baldwin if (vcpuid < 0 || vcpuid >= vm_get_maxcpus(vm))
53698568a00SJohn Baldwin return (NULL);
53798568a00SJohn Baldwin
53898568a00SJohn Baldwin vcpu = atomic_load_ptr(&vm->vcpu[vcpuid]);
53998568a00SJohn Baldwin if (__predict_true(vcpu != NULL))
54098568a00SJohn Baldwin return (vcpu);
54198568a00SJohn Baldwin
54298568a00SJohn Baldwin sx_xlock(&vm->vcpus_init_lock);
54398568a00SJohn Baldwin vcpu = vm->vcpu[vcpuid];
54498568a00SJohn Baldwin if (vcpu == NULL && !vm->dying) {
54598568a00SJohn Baldwin vcpu = vcpu_alloc(vm, vcpuid);
54698568a00SJohn Baldwin vcpu_init(vcpu);
54798568a00SJohn Baldwin
54898568a00SJohn Baldwin /*
54998568a00SJohn Baldwin * Ensure vCPU is fully created before updating pointer
55098568a00SJohn Baldwin * to permit unlocked reads above.
55198568a00SJohn Baldwin */
55298568a00SJohn Baldwin atomic_store_rel_ptr((uintptr_t *)&vm->vcpu[vcpuid],
55398568a00SJohn Baldwin (uintptr_t)vcpu);
55498568a00SJohn Baldwin }
55598568a00SJohn Baldwin sx_xunlock(&vm->vcpus_init_lock);
55698568a00SJohn Baldwin return (vcpu);
55798568a00SJohn Baldwin }
55898568a00SJohn Baldwin
55998568a00SJohn Baldwin void
vm_slock_vcpus(struct vm * vm)56098568a00SJohn Baldwin vm_slock_vcpus(struct vm *vm)
56198568a00SJohn Baldwin {
56298568a00SJohn Baldwin sx_slock(&vm->vcpus_init_lock);
56398568a00SJohn Baldwin }
56498568a00SJohn Baldwin
56598568a00SJohn Baldwin void
vm_unlock_vcpus(struct vm * vm)56698568a00SJohn Baldwin vm_unlock_vcpus(struct vm *vm)
56798568a00SJohn Baldwin {
56898568a00SJohn Baldwin sx_unlock(&vm->vcpus_init_lock);
5695fcf252fSNeel Natu }
5705fcf252fSNeel Natu
57101d822d3SRodney W. Grimes /*
57201d822d3SRodney W. Grimes * The default CPU topology is a single thread per package.
57301d822d3SRodney W. Grimes */
57401d822d3SRodney W. Grimes u_int cores_per_package = 1;
57501d822d3SRodney W. Grimes u_int threads_per_core = 1;
57601d822d3SRodney W. Grimes
577d5408b1dSNeel Natu int
vm_create(const char * name,struct vm ** retvm)578d5408b1dSNeel Natu vm_create(const char *name, struct vm **retvm)
579366f6083SPeter Grehan {
580366f6083SPeter Grehan struct vm *vm;
581318224bbSNeel Natu struct vmspace *vmspace;
582366f6083SPeter Grehan
583d5408b1dSNeel Natu /*
584d5408b1dSNeel Natu * If vmm.ko could not be successfully initialized then don't attempt
585d5408b1dSNeel Natu * to create the virtual machine.
586d5408b1dSNeel Natu */
587d5408b1dSNeel Natu if (!vmm_initialized)
588d5408b1dSNeel Natu return (ENXIO);
589d5408b1dSNeel Natu
590df95cc76SKa Ho Ng if (name == NULL || strnlen(name, VM_MAX_NAMELEN + 1) ==
591df95cc76SKa Ho Ng VM_MAX_NAMELEN + 1)
592d5408b1dSNeel Natu return (EINVAL);
593366f6083SPeter Grehan
5943c48106aSKonstantin Belousov vmspace = vmmops_vmspace_alloc(0, VM_MAXUSER_ADDRESS_LA48);
595318224bbSNeel Natu if (vmspace == NULL)
596318224bbSNeel Natu return (ENOMEM);
597318224bbSNeel Natu
598366f6083SPeter Grehan vm = malloc(sizeof(struct vm), M_VM, M_WAITOK | M_ZERO);
599366f6083SPeter Grehan strcpy(vm->name, name);
60088c4b8d1SNeel Natu vm->vmspace = vmspace;
6015b8a8cd1SNeel Natu mtx_init(&vm->rendezvous_mtx, "vm rendezvous lock", 0, MTX_DEF);
60267b69e76SJohn Baldwin sx_init(&vm->mem_segs_lock, "vm mem_segs");
60398568a00SJohn Baldwin sx_init(&vm->vcpus_init_lock, "vm vcpus");
604ee98f99dSJohn Baldwin vm->vcpu = malloc(sizeof(*vm->vcpu) * vm_maxcpu, M_VM, M_WAITOK |
605ee98f99dSJohn Baldwin M_ZERO);
606366f6083SPeter Grehan
60701d822d3SRodney W. Grimes vm->sockets = 1;
60801d822d3SRodney W. Grimes vm->cores = cores_per_package; /* XXX backwards compatibility */
60901d822d3SRodney W. Grimes vm->threads = threads_per_core; /* XXX backwards compatibility */
610ee98f99dSJohn Baldwin vm->maxcpus = vm_maxcpu;
61101d822d3SRodney W. Grimes
6125fcf252fSNeel Natu vm_init(vm, true);
613366f6083SPeter Grehan
614d5408b1dSNeel Natu *retvm = vm;
615d5408b1dSNeel Natu return (0);
616366f6083SPeter Grehan }
617366f6083SPeter Grehan
61801d822d3SRodney W. Grimes void
vm_get_topology(struct vm * vm,uint16_t * sockets,uint16_t * cores,uint16_t * threads,uint16_t * maxcpus)61901d822d3SRodney W. Grimes vm_get_topology(struct vm *vm, uint16_t *sockets, uint16_t *cores,
62001d822d3SRodney W. Grimes uint16_t *threads, uint16_t *maxcpus)
62101d822d3SRodney W. Grimes {
62201d822d3SRodney W. Grimes *sockets = vm->sockets;
62301d822d3SRodney W. Grimes *cores = vm->cores;
62401d822d3SRodney W. Grimes *threads = vm->threads;
62501d822d3SRodney W. Grimes *maxcpus = vm->maxcpus;
62601d822d3SRodney W. Grimes }
62701d822d3SRodney W. Grimes
628a488c9c9SRodney W. Grimes uint16_t
vm_get_maxcpus(struct vm * vm)629a488c9c9SRodney W. Grimes vm_get_maxcpus(struct vm *vm)
630a488c9c9SRodney W. Grimes {
631a488c9c9SRodney W. Grimes return (vm->maxcpus);
632a488c9c9SRodney W. Grimes }
633a488c9c9SRodney W. Grimes
63401d822d3SRodney W. Grimes int
vm_set_topology(struct vm * vm,uint16_t sockets,uint16_t cores,uint16_t threads,uint16_t maxcpus __unused)63501d822d3SRodney W. Grimes vm_set_topology(struct vm *vm, uint16_t sockets, uint16_t cores,
63698568a00SJohn Baldwin uint16_t threads, uint16_t maxcpus __unused)
63701d822d3SRodney W. Grimes {
63898568a00SJohn Baldwin /* Ignore maxcpus. */
639a488c9c9SRodney W. Grimes if ((sockets * cores * threads) > vm->maxcpus)
64001d822d3SRodney W. Grimes return (EINVAL);
64101d822d3SRodney W. Grimes vm->sockets = sockets;
64201d822d3SRodney W. Grimes vm->cores = cores;
64301d822d3SRodney W. Grimes vm->threads = threads;
64401d822d3SRodney W. Grimes return(0);
64501d822d3SRodney W. Grimes }
64601d822d3SRodney W. Grimes
647f7d51510SNeel Natu static void
vm_cleanup(struct vm * vm,bool destroy)6485fcf252fSNeel Natu vm_cleanup(struct vm *vm, bool destroy)
649366f6083SPeter Grehan {
6509b1aa8d6SNeel Natu struct mem_map *mm;
651366f6083SPeter Grehan int i;
652366f6083SPeter Grehan
653c668e817SRobert Wing if (destroy)
654c668e817SRobert Wing vm_xlock_memsegs(vm);
655c668e817SRobert Wing
656366f6083SPeter Grehan ppt_unassign_all(vm);
657366f6083SPeter Grehan
658318224bbSNeel Natu if (vm->iommu != NULL)
659318224bbSNeel Natu iommu_destroy_domain(vm->iommu);
660318224bbSNeel Natu
6610dafa5cdSNeel Natu if (destroy)
6620dafa5cdSNeel Natu vrtc_cleanup(vm->vrtc);
6630dafa5cdSNeel Natu else
6640dafa5cdSNeel Natu vrtc_reset(vm->vrtc);
665160ef77aSNeel Natu vpmtmr_cleanup(vm->vpmtmr);
666e883c9bbSTycho Nightingale vatpit_cleanup(vm->vatpit);
66708e3ff32SNeel Natu vhpet_cleanup(vm->vhpet);
668762fd208STycho Nightingale vatpic_cleanup(vm->vatpic);
66908e3ff32SNeel Natu vioapic_cleanup(vm->vioapic);
67008e3ff32SNeel Natu
67198568a00SJohn Baldwin for (i = 0; i < vm->maxcpus; i++) {
67298568a00SJohn Baldwin if (vm->vcpu[i] != NULL)
67398568a00SJohn Baldwin vcpu_cleanup(vm->vcpu[i], destroy);
67498568a00SJohn Baldwin }
6755fcf252fSNeel Natu
67615add60dSPeter Grehan vmmops_cleanup(vm->cookie);
6775fcf252fSNeel Natu
6789b1aa8d6SNeel Natu /*
6799b1aa8d6SNeel Natu * System memory is removed from the guest address space only when
6809b1aa8d6SNeel Natu * the VM is destroyed. This is because the mapping remains the same
6819b1aa8d6SNeel Natu * across VM reset.
6829b1aa8d6SNeel Natu *
6839b1aa8d6SNeel Natu * Device memory can be relocated by the guest (e.g. using PCI BARs)
6849b1aa8d6SNeel Natu * so those mappings are removed on a VM reset.
6859b1aa8d6SNeel Natu */
6869b1aa8d6SNeel Natu for (i = 0; i < VM_MAX_MEMMAPS; i++) {
6879b1aa8d6SNeel Natu mm = &vm->mem_maps[i];
6889b1aa8d6SNeel Natu if (destroy || !sysmem_mapping(vm, mm))
6899b1aa8d6SNeel Natu vm_free_memmap(vm, i);
6909b1aa8d6SNeel Natu }
691f7d51510SNeel Natu
6929b1aa8d6SNeel Natu if (destroy) {
6939b1aa8d6SNeel Natu for (i = 0; i < VM_MAX_MEMSEGS; i++)
6949b1aa8d6SNeel Natu vm_free_memseg(vm, i);
695c668e817SRobert Wing vm_unlock_memsegs(vm);
696366f6083SPeter Grehan
69715add60dSPeter Grehan vmmops_vmspace_free(vm->vmspace);
6985fcf252fSNeel Natu vm->vmspace = NULL;
69908ebb360SJohn Baldwin
700ee98f99dSJohn Baldwin free(vm->vcpu, M_VM);
70198568a00SJohn Baldwin sx_destroy(&vm->vcpus_init_lock);
70267b69e76SJohn Baldwin sx_destroy(&vm->mem_segs_lock);
70308ebb360SJohn Baldwin mtx_destroy(&vm->rendezvous_mtx);
7045fcf252fSNeel Natu }
7055fcf252fSNeel Natu }
706366f6083SPeter Grehan
7075fcf252fSNeel Natu void
vm_destroy(struct vm * vm)7085fcf252fSNeel Natu vm_destroy(struct vm *vm)
7095fcf252fSNeel Natu {
7105fcf252fSNeel Natu vm_cleanup(vm, true);
711366f6083SPeter Grehan free(vm, M_VM);
712366f6083SPeter Grehan }
713366f6083SPeter Grehan
7145fcf252fSNeel Natu int
vm_reinit(struct vm * vm)7155fcf252fSNeel Natu vm_reinit(struct vm *vm)
7165fcf252fSNeel Natu {
7175fcf252fSNeel Natu int error;
7185fcf252fSNeel Natu
7195fcf252fSNeel Natu /*
7205fcf252fSNeel Natu * A virtual machine can be reset only if all vcpus are suspended.
7215fcf252fSNeel Natu */
7225fcf252fSNeel Natu if (CPU_CMP(&vm->suspended_cpus, &vm->active_cpus) == 0) {
7235fcf252fSNeel Natu vm_cleanup(vm, false);
7245fcf252fSNeel Natu vm_init(vm, false);
7255fcf252fSNeel Natu error = 0;
7265fcf252fSNeel Natu } else {
7275fcf252fSNeel Natu error = EBUSY;
7285fcf252fSNeel Natu }
7295fcf252fSNeel Natu
7305fcf252fSNeel Natu return (error);
7315fcf252fSNeel Natu }
7325fcf252fSNeel Natu
733366f6083SPeter Grehan const char *
vm_name(struct vm * vm)734366f6083SPeter Grehan vm_name(struct vm *vm)
735366f6083SPeter Grehan {
736366f6083SPeter Grehan return (vm->name);
737366f6083SPeter Grehan }
738366f6083SPeter Grehan
73967b69e76SJohn Baldwin void
vm_slock_memsegs(struct vm * vm)74067b69e76SJohn Baldwin vm_slock_memsegs(struct vm *vm)
74167b69e76SJohn Baldwin {
74267b69e76SJohn Baldwin sx_slock(&vm->mem_segs_lock);
74367b69e76SJohn Baldwin }
74467b69e76SJohn Baldwin
74567b69e76SJohn Baldwin void
vm_xlock_memsegs(struct vm * vm)74667b69e76SJohn Baldwin vm_xlock_memsegs(struct vm *vm)
74767b69e76SJohn Baldwin {
74867b69e76SJohn Baldwin sx_xlock(&vm->mem_segs_lock);
74967b69e76SJohn Baldwin }
75067b69e76SJohn Baldwin
75167b69e76SJohn Baldwin void
vm_unlock_memsegs(struct vm * vm)75267b69e76SJohn Baldwin vm_unlock_memsegs(struct vm *vm)
75367b69e76SJohn Baldwin {
75467b69e76SJohn Baldwin sx_unlock(&vm->mem_segs_lock);
75567b69e76SJohn Baldwin }
75667b69e76SJohn Baldwin
757366f6083SPeter Grehan int
vm_map_mmio(struct vm * vm,vm_paddr_t gpa,size_t len,vm_paddr_t hpa)758366f6083SPeter Grehan vm_map_mmio(struct vm *vm, vm_paddr_t gpa, size_t len, vm_paddr_t hpa)
759366f6083SPeter Grehan {
760318224bbSNeel Natu vm_object_t obj;
761366f6083SPeter Grehan
762318224bbSNeel Natu if ((obj = vmm_mmio_alloc(vm->vmspace, gpa, len, hpa)) == NULL)
763318224bbSNeel Natu return (ENOMEM);
764318224bbSNeel Natu else
765318224bbSNeel Natu return (0);
766366f6083SPeter Grehan }
767366f6083SPeter Grehan
768366f6083SPeter Grehan int
vm_unmap_mmio(struct vm * vm,vm_paddr_t gpa,size_t len)769366f6083SPeter Grehan vm_unmap_mmio(struct vm *vm, vm_paddr_t gpa, size_t len)
770366f6083SPeter Grehan {
771366f6083SPeter Grehan
772318224bbSNeel Natu vmm_mmio_free(vm->vmspace, gpa, len);
773318224bbSNeel Natu return (0);
774366f6083SPeter Grehan }
775366f6083SPeter Grehan
7769b1aa8d6SNeel Natu /*
7779b1aa8d6SNeel Natu * Return 'true' if 'gpa' is allocated in the guest address space.
7789b1aa8d6SNeel Natu *
7799b1aa8d6SNeel Natu * This function is called in the context of a running vcpu which acts as
7809b1aa8d6SNeel Natu * an implicit lock on 'vm->mem_maps[]'.
7819b1aa8d6SNeel Natu */
7829b1aa8d6SNeel Natu bool
vm_mem_allocated(struct vcpu * vcpu,vm_paddr_t gpa)78380cb5d84SJohn Baldwin vm_mem_allocated(struct vcpu *vcpu, vm_paddr_t gpa)
784366f6083SPeter Grehan {
78580cb5d84SJohn Baldwin struct vm *vm = vcpu->vm;
7869b1aa8d6SNeel Natu struct mem_map *mm;
787341f19c9SNeel Natu int i;
788341f19c9SNeel Natu
7899b1aa8d6SNeel Natu #ifdef INVARIANTS
7909b1aa8d6SNeel Natu int hostcpu, state;
79180cb5d84SJohn Baldwin state = vcpu_get_state(vcpu, &hostcpu);
7929b1aa8d6SNeel Natu KASSERT(state == VCPU_RUNNING && hostcpu == curcpu,
7939b1aa8d6SNeel Natu ("%s: invalid vcpu state %d/%d", __func__, state, hostcpu));
7949b1aa8d6SNeel Natu #endif
7959b1aa8d6SNeel Natu
7969b1aa8d6SNeel Natu for (i = 0; i < VM_MAX_MEMMAPS; i++) {
7979b1aa8d6SNeel Natu mm = &vm->mem_maps[i];
7989b1aa8d6SNeel Natu if (mm->len != 0 && gpa >= mm->gpa && gpa < mm->gpa + mm->len)
7999b1aa8d6SNeel Natu return (true); /* 'gpa' is sysmem or devmem */
800341f19c9SNeel Natu }
801341f19c9SNeel Natu
802318224bbSNeel Natu if (ppt_is_mmio(vm, gpa))
8039b1aa8d6SNeel Natu return (true); /* 'gpa' is pci passthru mmio */
804318224bbSNeel Natu
8059b1aa8d6SNeel Natu return (false);
806341f19c9SNeel Natu }
807341f19c9SNeel Natu
808341f19c9SNeel Natu int
vm_alloc_memseg(struct vm * vm,int ident,size_t len,bool sysmem)8099b1aa8d6SNeel Natu vm_alloc_memseg(struct vm *vm, int ident, size_t len, bool sysmem)
810341f19c9SNeel Natu {
811318224bbSNeel Natu struct mem_seg *seg;
8129b1aa8d6SNeel Natu vm_object_t obj;
813366f6083SPeter Grehan
81467b69e76SJohn Baldwin sx_assert(&vm->mem_segs_lock, SX_XLOCKED);
81567b69e76SJohn Baldwin
8169b1aa8d6SNeel Natu if (ident < 0 || ident >= VM_MAX_MEMSEGS)
817341f19c9SNeel Natu return (EINVAL);
818341f19c9SNeel Natu
8199b1aa8d6SNeel Natu if (len == 0 || (len & PAGE_MASK))
8209b1aa8d6SNeel Natu return (EINVAL);
821341f19c9SNeel Natu
8229b1aa8d6SNeel Natu seg = &vm->mem_segs[ident];
8239b1aa8d6SNeel Natu if (seg->object != NULL) {
8249b1aa8d6SNeel Natu if (seg->len == len && seg->sysmem == sysmem)
8259b1aa8d6SNeel Natu return (EEXIST);
8269b1aa8d6SNeel Natu else
8279b1aa8d6SNeel Natu return (EINVAL);
828341f19c9SNeel Natu }
829341f19c9SNeel Natu
8306b389740SMark Johnston obj = vm_object_allocate(OBJT_SWAP, len >> PAGE_SHIFT);
8319b1aa8d6SNeel Natu if (obj == NULL)
832318224bbSNeel Natu return (ENOMEM);
833318224bbSNeel Natu
834318224bbSNeel Natu seg->len = len;
8359b1aa8d6SNeel Natu seg->object = obj;
8369b1aa8d6SNeel Natu seg->sysmem = sysmem;
837366f6083SPeter Grehan return (0);
838366f6083SPeter Grehan }
839366f6083SPeter Grehan
8409b1aa8d6SNeel Natu int
vm_get_memseg(struct vm * vm,int ident,size_t * len,bool * sysmem,vm_object_t * objptr)8419b1aa8d6SNeel Natu vm_get_memseg(struct vm *vm, int ident, size_t *len, bool *sysmem,
8429b1aa8d6SNeel Natu vm_object_t *objptr)
843477867a0SNeel Natu {
8449b1aa8d6SNeel Natu struct mem_seg *seg;
845477867a0SNeel Natu
84667b69e76SJohn Baldwin sx_assert(&vm->mem_segs_lock, SX_LOCKED);
84767b69e76SJohn Baldwin
8489b1aa8d6SNeel Natu if (ident < 0 || ident >= VM_MAX_MEMSEGS)
8499b1aa8d6SNeel Natu return (EINVAL);
8509b1aa8d6SNeel Natu
8519b1aa8d6SNeel Natu seg = &vm->mem_segs[ident];
8529b1aa8d6SNeel Natu if (len)
8539b1aa8d6SNeel Natu *len = seg->len;
8549b1aa8d6SNeel Natu if (sysmem)
8559b1aa8d6SNeel Natu *sysmem = seg->sysmem;
8569b1aa8d6SNeel Natu if (objptr)
8579b1aa8d6SNeel Natu *objptr = seg->object;
8589b1aa8d6SNeel Natu return (0);
859477867a0SNeel Natu }
8609b1aa8d6SNeel Natu
8619b1aa8d6SNeel Natu void
vm_free_memseg(struct vm * vm,int ident)8629b1aa8d6SNeel Natu vm_free_memseg(struct vm *vm, int ident)
8639b1aa8d6SNeel Natu {
8649b1aa8d6SNeel Natu struct mem_seg *seg;
8659b1aa8d6SNeel Natu
8669b1aa8d6SNeel Natu KASSERT(ident >= 0 && ident < VM_MAX_MEMSEGS,
8679b1aa8d6SNeel Natu ("%s: invalid memseg ident %d", __func__, ident));
8689b1aa8d6SNeel Natu
8699b1aa8d6SNeel Natu seg = &vm->mem_segs[ident];
8709b1aa8d6SNeel Natu if (seg->object != NULL) {
8719b1aa8d6SNeel Natu vm_object_deallocate(seg->object);
8729b1aa8d6SNeel Natu bzero(seg, sizeof(struct mem_seg));
8739b1aa8d6SNeel Natu }
8749b1aa8d6SNeel Natu }
8759b1aa8d6SNeel Natu
8769b1aa8d6SNeel Natu int
vm_mmap_memseg(struct vm * vm,vm_paddr_t gpa,int segid,vm_ooffset_t first,size_t len,int prot,int flags)8779b1aa8d6SNeel Natu vm_mmap_memseg(struct vm *vm, vm_paddr_t gpa, int segid, vm_ooffset_t first,
8789b1aa8d6SNeel Natu size_t len, int prot, int flags)
8799b1aa8d6SNeel Natu {
8809b1aa8d6SNeel Natu struct mem_seg *seg;
8819b1aa8d6SNeel Natu struct mem_map *m, *map;
8829b1aa8d6SNeel Natu vm_ooffset_t last;
8839b1aa8d6SNeel Natu int i, error;
8849b1aa8d6SNeel Natu
8859b1aa8d6SNeel Natu if (prot == 0 || (prot & ~(VM_PROT_ALL)) != 0)
8869b1aa8d6SNeel Natu return (EINVAL);
8879b1aa8d6SNeel Natu
8889b1aa8d6SNeel Natu if (flags & ~VM_MEMMAP_F_WIRED)
8899b1aa8d6SNeel Natu return (EINVAL);
8909b1aa8d6SNeel Natu
8919b1aa8d6SNeel Natu if (segid < 0 || segid >= VM_MAX_MEMSEGS)
8929b1aa8d6SNeel Natu return (EINVAL);
8939b1aa8d6SNeel Natu
8949b1aa8d6SNeel Natu seg = &vm->mem_segs[segid];
8959b1aa8d6SNeel Natu if (seg->object == NULL)
8969b1aa8d6SNeel Natu return (EINVAL);
8979b1aa8d6SNeel Natu
8989b1aa8d6SNeel Natu last = first + len;
8999b1aa8d6SNeel Natu if (first < 0 || first >= last || last > seg->len)
9009b1aa8d6SNeel Natu return (EINVAL);
9019b1aa8d6SNeel Natu
9029b1aa8d6SNeel Natu if ((gpa | first | last) & PAGE_MASK)
9039b1aa8d6SNeel Natu return (EINVAL);
9049b1aa8d6SNeel Natu
9059b1aa8d6SNeel Natu map = NULL;
9069b1aa8d6SNeel Natu for (i = 0; i < VM_MAX_MEMMAPS; i++) {
9079b1aa8d6SNeel Natu m = &vm->mem_maps[i];
9089b1aa8d6SNeel Natu if (m->len == 0) {
9099b1aa8d6SNeel Natu map = m;
9109b1aa8d6SNeel Natu break;
9119b1aa8d6SNeel Natu }
9129b1aa8d6SNeel Natu }
9139b1aa8d6SNeel Natu
9149b1aa8d6SNeel Natu if (map == NULL)
9159b1aa8d6SNeel Natu return (ENOSPC);
9169b1aa8d6SNeel Natu
9179b1aa8d6SNeel Natu error = vm_map_find(&vm->vmspace->vm_map, seg->object, first, &gpa,
9189b1aa8d6SNeel Natu len, 0, VMFS_NO_SPACE, prot, prot, 0);
9199b1aa8d6SNeel Natu if (error != KERN_SUCCESS)
9209b1aa8d6SNeel Natu return (EFAULT);
9219b1aa8d6SNeel Natu
9229b1aa8d6SNeel Natu vm_object_reference(seg->object);
9239b1aa8d6SNeel Natu
9249b1aa8d6SNeel Natu if (flags & VM_MEMMAP_F_WIRED) {
9259b1aa8d6SNeel Natu error = vm_map_wire(&vm->vmspace->vm_map, gpa, gpa + len,
9269b1aa8d6SNeel Natu VM_MAP_WIRE_USER | VM_MAP_WIRE_NOHOLES);
9279b1aa8d6SNeel Natu if (error != KERN_SUCCESS) {
9289b1aa8d6SNeel Natu vm_map_remove(&vm->vmspace->vm_map, gpa, gpa + len);
92954a3a114SMark Johnston return (error == KERN_RESOURCE_SHORTAGE ? ENOMEM :
93054a3a114SMark Johnston EFAULT);
9319b1aa8d6SNeel Natu }
9329b1aa8d6SNeel Natu }
9339b1aa8d6SNeel Natu
9349b1aa8d6SNeel Natu map->gpa = gpa;
9359b1aa8d6SNeel Natu map->len = len;
9369b1aa8d6SNeel Natu map->segoff = first;
9379b1aa8d6SNeel Natu map->segid = segid;
9389b1aa8d6SNeel Natu map->prot = prot;
9399b1aa8d6SNeel Natu map->flags = flags;
9409b1aa8d6SNeel Natu return (0);
9419b1aa8d6SNeel Natu }
9429b1aa8d6SNeel Natu
9439b1aa8d6SNeel Natu int
vm_munmap_memseg(struct vm * vm,vm_paddr_t gpa,size_t len)944f8a6ec2dSD Scott Phillips vm_munmap_memseg(struct vm *vm, vm_paddr_t gpa, size_t len)
945f8a6ec2dSD Scott Phillips {
946f8a6ec2dSD Scott Phillips struct mem_map *m;
947f8a6ec2dSD Scott Phillips int i;
948f8a6ec2dSD Scott Phillips
949f8a6ec2dSD Scott Phillips for (i = 0; i < VM_MAX_MEMMAPS; i++) {
950f8a6ec2dSD Scott Phillips m = &vm->mem_maps[i];
951f8a6ec2dSD Scott Phillips if (m->gpa == gpa && m->len == len &&
952f8a6ec2dSD Scott Phillips (m->flags & VM_MEMMAP_F_IOMMU) == 0) {
953f8a6ec2dSD Scott Phillips vm_free_memmap(vm, i);
954f8a6ec2dSD Scott Phillips return (0);
955f8a6ec2dSD Scott Phillips }
956f8a6ec2dSD Scott Phillips }
957f8a6ec2dSD Scott Phillips
958f8a6ec2dSD Scott Phillips return (EINVAL);
959f8a6ec2dSD Scott Phillips }
960f8a6ec2dSD Scott Phillips
961f8a6ec2dSD Scott Phillips int
vm_mmap_getnext(struct vm * vm,vm_paddr_t * gpa,int * segid,vm_ooffset_t * segoff,size_t * len,int * prot,int * flags)9629b1aa8d6SNeel Natu vm_mmap_getnext(struct vm *vm, vm_paddr_t *gpa, int *segid,
9639b1aa8d6SNeel Natu vm_ooffset_t *segoff, size_t *len, int *prot, int *flags)
9649b1aa8d6SNeel Natu {
9659b1aa8d6SNeel Natu struct mem_map *mm, *mmnext;
9669b1aa8d6SNeel Natu int i;
9679b1aa8d6SNeel Natu
9689b1aa8d6SNeel Natu mmnext = NULL;
9699b1aa8d6SNeel Natu for (i = 0; i < VM_MAX_MEMMAPS; i++) {
9709b1aa8d6SNeel Natu mm = &vm->mem_maps[i];
9719b1aa8d6SNeel Natu if (mm->len == 0 || mm->gpa < *gpa)
9729b1aa8d6SNeel Natu continue;
9739b1aa8d6SNeel Natu if (mmnext == NULL || mm->gpa < mmnext->gpa)
9749b1aa8d6SNeel Natu mmnext = mm;
9759b1aa8d6SNeel Natu }
9769b1aa8d6SNeel Natu
9779b1aa8d6SNeel Natu if (mmnext != NULL) {
9789b1aa8d6SNeel Natu *gpa = mmnext->gpa;
9799b1aa8d6SNeel Natu if (segid)
9809b1aa8d6SNeel Natu *segid = mmnext->segid;
9819b1aa8d6SNeel Natu if (segoff)
9829b1aa8d6SNeel Natu *segoff = mmnext->segoff;
9839b1aa8d6SNeel Natu if (len)
9849b1aa8d6SNeel Natu *len = mmnext->len;
9859b1aa8d6SNeel Natu if (prot)
9869b1aa8d6SNeel Natu *prot = mmnext->prot;
9879b1aa8d6SNeel Natu if (flags)
9889b1aa8d6SNeel Natu *flags = mmnext->flags;
9899b1aa8d6SNeel Natu return (0);
9909b1aa8d6SNeel Natu } else {
9919b1aa8d6SNeel Natu return (ENOENT);
9929b1aa8d6SNeel Natu }
993477867a0SNeel Natu }
994477867a0SNeel Natu
995318224bbSNeel Natu static void
vm_free_memmap(struct vm * vm,int ident)9969b1aa8d6SNeel Natu vm_free_memmap(struct vm *vm, int ident)
997366f6083SPeter Grehan {
9989b1aa8d6SNeel Natu struct mem_map *mm;
99973505a10SRobert Wing int error __diagused;
10004db4fb2cSNeel Natu
10019b1aa8d6SNeel Natu mm = &vm->mem_maps[ident];
10029b1aa8d6SNeel Natu if (mm->len) {
10039b1aa8d6SNeel Natu error = vm_map_remove(&vm->vmspace->vm_map, mm->gpa,
10049b1aa8d6SNeel Natu mm->gpa + mm->len);
10059b1aa8d6SNeel Natu KASSERT(error == KERN_SUCCESS, ("%s: vm_map_remove error %d",
10069b1aa8d6SNeel Natu __func__, error));
10079b1aa8d6SNeel Natu bzero(mm, sizeof(struct mem_map));
1008318224bbSNeel Natu }
1009318224bbSNeel Natu }
1010318224bbSNeel Natu
10119b1aa8d6SNeel Natu static __inline bool
sysmem_mapping(struct vm * vm,struct mem_map * mm)10129b1aa8d6SNeel Natu sysmem_mapping(struct vm *vm, struct mem_map *mm)
1013318224bbSNeel Natu {
1014318224bbSNeel Natu
10159b1aa8d6SNeel Natu if (mm->len != 0 && vm->mem_segs[mm->segid].sysmem)
10169b1aa8d6SNeel Natu return (true);
10179b1aa8d6SNeel Natu else
10189b1aa8d6SNeel Natu return (false);
1019318224bbSNeel Natu }
1020318224bbSNeel Natu
1021147d12a7SAntoine Brodin vm_paddr_t
vmm_sysmem_maxaddr(struct vm * vm)1022147d12a7SAntoine Brodin vmm_sysmem_maxaddr(struct vm *vm)
10239b1aa8d6SNeel Natu {
10249b1aa8d6SNeel Natu struct mem_map *mm;
10259b1aa8d6SNeel Natu vm_paddr_t maxaddr;
10269b1aa8d6SNeel Natu int i;
1027318224bbSNeel Natu
10289b1aa8d6SNeel Natu maxaddr = 0;
10299b1aa8d6SNeel Natu for (i = 0; i < VM_MAX_MEMMAPS; i++) {
10309b1aa8d6SNeel Natu mm = &vm->mem_maps[i];
10319b1aa8d6SNeel Natu if (sysmem_mapping(vm, mm)) {
10329b1aa8d6SNeel Natu if (maxaddr < mm->gpa + mm->len)
10339b1aa8d6SNeel Natu maxaddr = mm->gpa + mm->len;
10349b1aa8d6SNeel Natu }
10359b1aa8d6SNeel Natu }
10369b1aa8d6SNeel Natu return (maxaddr);
1037318224bbSNeel Natu }
1038318224bbSNeel Natu
1039318224bbSNeel Natu static void
vm_iommu_map(struct vm * vm)10403abc72f8SKonstantin Belousov vm_iommu_map(struct vm *vm)
1041318224bbSNeel Natu {
1042318224bbSNeel Natu vm_paddr_t gpa, hpa;
10439b1aa8d6SNeel Natu struct mem_map *mm;
10443abc72f8SKonstantin Belousov int i;
1045318224bbSNeel Natu
1046671a0049SKonstantin Belousov sx_assert(&vm->mem_segs_lock, SX_LOCKED);
1047671a0049SKonstantin Belousov
10489b1aa8d6SNeel Natu for (i = 0; i < VM_MAX_MEMMAPS; i++) {
10499b1aa8d6SNeel Natu mm = &vm->mem_maps[i];
10509b1aa8d6SNeel Natu if (!sysmem_mapping(vm, mm))
10519b1aa8d6SNeel Natu continue;
1052318224bbSNeel Natu
10539b1aa8d6SNeel Natu KASSERT((mm->flags & VM_MEMMAP_F_IOMMU) == 0,
10549b1aa8d6SNeel Natu ("iommu map found invalid memmap %#lx/%#lx/%#x",
10559b1aa8d6SNeel Natu mm->gpa, mm->len, mm->flags));
10569b1aa8d6SNeel Natu if ((mm->flags & VM_MEMMAP_F_WIRED) == 0)
10579b1aa8d6SNeel Natu continue;
10589b1aa8d6SNeel Natu mm->flags |= VM_MEMMAP_F_IOMMU;
10593abc72f8SKonstantin Belousov
10603abc72f8SKonstantin Belousov for (gpa = mm->gpa; gpa < mm->gpa + mm->len; gpa += PAGE_SIZE) {
1061671a0049SKonstantin Belousov hpa = pmap_extract(vmspace_pmap(vm->vmspace), gpa);
10623abc72f8SKonstantin Belousov
1063671a0049SKonstantin Belousov /*
1064671a0049SKonstantin Belousov * All mappings in the vmm vmspace must be
1065671a0049SKonstantin Belousov * present since they are managed by vmm in this way.
1066671a0049SKonstantin Belousov * Because we are in pass-through mode, the
1067671a0049SKonstantin Belousov * mappings must also be wired. This implies
1068671a0049SKonstantin Belousov * that all pages must be mapped and wired,
1069671a0049SKonstantin Belousov * allowing to use pmap_extract() and avoiding the
1070671a0049SKonstantin Belousov * need to use vm_gpa_hold_global().
1071671a0049SKonstantin Belousov *
1072671a0049SKonstantin Belousov * This could change if/when we start
1073671a0049SKonstantin Belousov * supporting page faults on IOMMU maps.
1074671a0049SKonstantin Belousov */
1075671a0049SKonstantin Belousov KASSERT(vm_page_wired(PHYS_TO_VM_PAGE(hpa)),
1076671a0049SKonstantin Belousov ("vm_iommu_map: vm %p gpa %jx hpa %jx not wired",
1077671a0049SKonstantin Belousov vm, (uintmax_t)gpa, (uintmax_t)hpa));
1078671a0049SKonstantin Belousov
10793abc72f8SKonstantin Belousov iommu_create_mapping(vm->iommu, gpa, hpa, PAGE_SIZE);
10803abc72f8SKonstantin Belousov }
10813abc72f8SKonstantin Belousov }
10823abc72f8SKonstantin Belousov
10833abc72f8SKonstantin Belousov iommu_invalidate_tlb(iommu_host_domain());
10843abc72f8SKonstantin Belousov }
10853abc72f8SKonstantin Belousov
10863abc72f8SKonstantin Belousov static void
vm_iommu_unmap(struct vm * vm)10873abc72f8SKonstantin Belousov vm_iommu_unmap(struct vm *vm)
10883abc72f8SKonstantin Belousov {
10893abc72f8SKonstantin Belousov vm_paddr_t gpa;
10903abc72f8SKonstantin Belousov struct mem_map *mm;
10913abc72f8SKonstantin Belousov int i;
10923abc72f8SKonstantin Belousov
1093671a0049SKonstantin Belousov sx_assert(&vm->mem_segs_lock, SX_LOCKED);
1094671a0049SKonstantin Belousov
10953abc72f8SKonstantin Belousov for (i = 0; i < VM_MAX_MEMMAPS; i++) {
10963abc72f8SKonstantin Belousov mm = &vm->mem_maps[i];
10973abc72f8SKonstantin Belousov if (!sysmem_mapping(vm, mm))
10983abc72f8SKonstantin Belousov continue;
10993abc72f8SKonstantin Belousov
11009b1aa8d6SNeel Natu if ((mm->flags & VM_MEMMAP_F_IOMMU) == 0)
11019b1aa8d6SNeel Natu continue;
11029b1aa8d6SNeel Natu mm->flags &= ~VM_MEMMAP_F_IOMMU;
11039b1aa8d6SNeel Natu KASSERT((mm->flags & VM_MEMMAP_F_WIRED) != 0,
11049b1aa8d6SNeel Natu ("iommu unmap found invalid memmap %#lx/%#lx/%#x",
11059b1aa8d6SNeel Natu mm->gpa, mm->len, mm->flags));
11069b1aa8d6SNeel Natu
11073abc72f8SKonstantin Belousov for (gpa = mm->gpa; gpa < mm->gpa + mm->len; gpa += PAGE_SIZE) {
1108671a0049SKonstantin Belousov KASSERT(vm_page_wired(PHYS_TO_VM_PAGE(pmap_extract(
1109671a0049SKonstantin Belousov vmspace_pmap(vm->vmspace), gpa))),
1110671a0049SKonstantin Belousov ("vm_iommu_unmap: vm %p gpa %jx not wired",
1111671a0049SKonstantin Belousov vm, (uintmax_t)gpa));
11123abc72f8SKonstantin Belousov iommu_remove_mapping(vm->iommu, gpa, PAGE_SIZE);
1113318224bbSNeel Natu }
1114318224bbSNeel Natu }
1115318224bbSNeel Natu
1116318224bbSNeel Natu /*
1117318224bbSNeel Natu * Invalidate the cached translations associated with the domain
1118318224bbSNeel Natu * from which pages were removed.
1119318224bbSNeel Natu */
1120318224bbSNeel Natu iommu_invalidate_tlb(vm->iommu);
1121318224bbSNeel Natu }
1122318224bbSNeel Natu
1123318224bbSNeel Natu int
vm_unassign_pptdev(struct vm * vm,int bus,int slot,int func)1124318224bbSNeel Natu vm_unassign_pptdev(struct vm *vm, int bus, int slot, int func)
1125318224bbSNeel Natu {
1126318224bbSNeel Natu int error;
1127318224bbSNeel Natu
1128318224bbSNeel Natu error = ppt_unassign_device(vm, bus, slot, func);
1129318224bbSNeel Natu if (error)
1130318224bbSNeel Natu return (error);
1131318224bbSNeel Natu
11329b1aa8d6SNeel Natu if (ppt_assigned_devices(vm) == 0)
1133318224bbSNeel Natu vm_iommu_unmap(vm);
11349b1aa8d6SNeel Natu
1135318224bbSNeel Natu return (0);
1136318224bbSNeel Natu }
1137318224bbSNeel Natu
1138318224bbSNeel Natu int
vm_assign_pptdev(struct vm * vm,int bus,int slot,int func)1139318224bbSNeel Natu vm_assign_pptdev(struct vm *vm, int bus, int slot, int func)
1140318224bbSNeel Natu {
1141318224bbSNeel Natu int error;
1142318224bbSNeel Natu vm_paddr_t maxaddr;
1143318224bbSNeel Natu
11449b1aa8d6SNeel Natu /* Set up the IOMMU to do the 'gpa' to 'hpa' translation */
114551f45d01SNeel Natu if (ppt_assigned_devices(vm) == 0) {
1146318224bbSNeel Natu KASSERT(vm->iommu == NULL,
1147318224bbSNeel Natu ("vm_assign_pptdev: iommu must be NULL"));
1148147d12a7SAntoine Brodin maxaddr = vmm_sysmem_maxaddr(vm);
1149318224bbSNeel Natu vm->iommu = iommu_create_domain(maxaddr);
1150ffe1b10dSJohn Baldwin if (vm->iommu == NULL)
1151ffe1b10dSJohn Baldwin return (ENXIO);
1152318224bbSNeel Natu vm_iommu_map(vm);
1153318224bbSNeel Natu }
1154318224bbSNeel Natu
1155318224bbSNeel Natu error = ppt_assign_device(vm, bus, slot, func);
1156318224bbSNeel Natu return (error);
1157318224bbSNeel Natu }
1158318224bbSNeel Natu
115928b561adSJohn Baldwin static void *
_vm_gpa_hold(struct vm * vm,vm_paddr_t gpa,size_t len,int reqprot,void ** cookie)116028b561adSJohn Baldwin _vm_gpa_hold(struct vm *vm, vm_paddr_t gpa, size_t len, int reqprot,
1161318224bbSNeel Natu void **cookie)
1162318224bbSNeel Natu {
11639b1aa8d6SNeel Natu int i, count, pageoff;
11649b1aa8d6SNeel Natu struct mem_map *mm;
1165318224bbSNeel Natu vm_page_t m;
116628b561adSJohn Baldwin
1167318224bbSNeel Natu pageoff = gpa & PAGE_MASK;
1168318224bbSNeel Natu if (len > PAGE_SIZE - pageoff)
1169318224bbSNeel Natu panic("vm_gpa_hold: invalid gpa/len: 0x%016lx/%lu", gpa, len);
1170318224bbSNeel Natu
11719b1aa8d6SNeel Natu count = 0;
11729b1aa8d6SNeel Natu for (i = 0; i < VM_MAX_MEMMAPS; i++) {
11739b1aa8d6SNeel Natu mm = &vm->mem_maps[i];
117446567b4fSPeter Grehan if (gpa >= mm->gpa && gpa < mm->gpa + mm->len) {
1175318224bbSNeel Natu count = vm_fault_quick_hold_pages(&vm->vmspace->vm_map,
1176318224bbSNeel Natu trunc_page(gpa), PAGE_SIZE, reqprot, &m, 1);
11779b1aa8d6SNeel Natu break;
11789b1aa8d6SNeel Natu }
11799b1aa8d6SNeel Natu }
1180318224bbSNeel Natu
1181318224bbSNeel Natu if (count == 1) {
1182318224bbSNeel Natu *cookie = m;
1183318224bbSNeel Natu return ((void *)(PHYS_TO_DMAP(VM_PAGE_TO_PHYS(m)) + pageoff));
1184318224bbSNeel Natu } else {
1185318224bbSNeel Natu *cookie = NULL;
1186318224bbSNeel Natu return (NULL);
1187318224bbSNeel Natu }
1188318224bbSNeel Natu }
1189318224bbSNeel Natu
119028b561adSJohn Baldwin void *
vm_gpa_hold(struct vcpu * vcpu,vm_paddr_t gpa,size_t len,int reqprot,void ** cookie)1191d3956e46SJohn Baldwin vm_gpa_hold(struct vcpu *vcpu, vm_paddr_t gpa, size_t len, int reqprot,
119228b561adSJohn Baldwin void **cookie)
119328b561adSJohn Baldwin {
119428b561adSJohn Baldwin #ifdef INVARIANTS
119528b561adSJohn Baldwin /*
119628b561adSJohn Baldwin * The current vcpu should be frozen to ensure 'vm_memmap[]'
119728b561adSJohn Baldwin * stability.
119828b561adSJohn Baldwin */
1199d3956e46SJohn Baldwin int state = vcpu_get_state(vcpu, NULL);
120028b561adSJohn Baldwin KASSERT(state == VCPU_FROZEN, ("%s: invalid vcpu state %d",
120128b561adSJohn Baldwin __func__, state));
120228b561adSJohn Baldwin #endif
1203d3956e46SJohn Baldwin return (_vm_gpa_hold(vcpu->vm, gpa, len, reqprot, cookie));
120428b561adSJohn Baldwin }
120528b561adSJohn Baldwin
120628b561adSJohn Baldwin void *
vm_gpa_hold_global(struct vm * vm,vm_paddr_t gpa,size_t len,int reqprot,void ** cookie)120728b561adSJohn Baldwin vm_gpa_hold_global(struct vm *vm, vm_paddr_t gpa, size_t len, int reqprot,
120828b561adSJohn Baldwin void **cookie)
120928b561adSJohn Baldwin {
121067b69e76SJohn Baldwin sx_assert(&vm->mem_segs_lock, SX_LOCKED);
121128b561adSJohn Baldwin return (_vm_gpa_hold(vm, gpa, len, reqprot, cookie));
121228b561adSJohn Baldwin }
121328b561adSJohn Baldwin
1214318224bbSNeel Natu void
vm_gpa_release(void * cookie)1215318224bbSNeel Natu vm_gpa_release(void *cookie)
1216318224bbSNeel Natu {
1217318224bbSNeel Natu vm_page_t m = cookie;
1218318224bbSNeel Natu
1219eeacb3b0SMark Johnston vm_page_unwire(m, PQ_ACTIVE);
1220366f6083SPeter Grehan }
1221366f6083SPeter Grehan
1222366f6083SPeter Grehan int
vm_get_register(struct vcpu * vcpu,int reg,uint64_t * retval)1223d3956e46SJohn Baldwin vm_get_register(struct vcpu *vcpu, int reg, uint64_t *retval)
1224366f6083SPeter Grehan {
1225366f6083SPeter Grehan
1226366f6083SPeter Grehan if (reg >= VM_REG_LAST)
1227366f6083SPeter Grehan return (EINVAL);
1228366f6083SPeter Grehan
1229d3956e46SJohn Baldwin return (vmmops_getreg(vcpu->cookie, reg, retval));
1230366f6083SPeter Grehan }
1231366f6083SPeter Grehan
1232366f6083SPeter Grehan int
vm_set_register(struct vcpu * vcpu,int reg,uint64_t val)1233d3956e46SJohn Baldwin vm_set_register(struct vcpu *vcpu, int reg, uint64_t val)
1234366f6083SPeter Grehan {
1235d087a399SNeel Natu int error;
1236366f6083SPeter Grehan
1237366f6083SPeter Grehan if (reg >= VM_REG_LAST)
1238366f6083SPeter Grehan return (EINVAL);
1239366f6083SPeter Grehan
1240869c8d19SJohn Baldwin error = vmmops_setreg(vcpu->cookie, reg, val);
1241d087a399SNeel Natu if (error || reg != VM_REG_GUEST_RIP)
1242d087a399SNeel Natu return (error);
1243d087a399SNeel Natu
1244d087a399SNeel Natu /* Set 'nextrip' to match the value of %rip */
1245d3956e46SJohn Baldwin VMM_CTR1(vcpu, "Setting nextrip to %#lx", val);
1246d087a399SNeel Natu vcpu->nextrip = val;
1247d087a399SNeel Natu return (0);
1248366f6083SPeter Grehan }
1249366f6083SPeter Grehan
1250490d56c5SEd Maste static bool
is_descriptor_table(int reg)1251366f6083SPeter Grehan is_descriptor_table(int reg)
1252366f6083SPeter Grehan {
1253366f6083SPeter Grehan
1254366f6083SPeter Grehan switch (reg) {
1255366f6083SPeter Grehan case VM_REG_GUEST_IDTR:
1256366f6083SPeter Grehan case VM_REG_GUEST_GDTR:
1257490d56c5SEd Maste return (true);
1258366f6083SPeter Grehan default:
1259490d56c5SEd Maste return (false);
1260366f6083SPeter Grehan }
1261366f6083SPeter Grehan }
1262366f6083SPeter Grehan
1263490d56c5SEd Maste static bool
is_segment_register(int reg)1264366f6083SPeter Grehan is_segment_register(int reg)
1265366f6083SPeter Grehan {
1266366f6083SPeter Grehan
1267366f6083SPeter Grehan switch (reg) {
1268366f6083SPeter Grehan case VM_REG_GUEST_ES:
1269366f6083SPeter Grehan case VM_REG_GUEST_CS:
1270366f6083SPeter Grehan case VM_REG_GUEST_SS:
1271366f6083SPeter Grehan case VM_REG_GUEST_DS:
1272366f6083SPeter Grehan case VM_REG_GUEST_FS:
1273366f6083SPeter Grehan case VM_REG_GUEST_GS:
1274366f6083SPeter Grehan case VM_REG_GUEST_TR:
1275366f6083SPeter Grehan case VM_REG_GUEST_LDTR:
1276490d56c5SEd Maste return (true);
1277366f6083SPeter Grehan default:
1278490d56c5SEd Maste return (false);
1279366f6083SPeter Grehan }
1280366f6083SPeter Grehan }
1281366f6083SPeter Grehan
1282366f6083SPeter Grehan int
vm_get_seg_desc(struct vcpu * vcpu,int reg,struct seg_desc * desc)1283d3956e46SJohn Baldwin vm_get_seg_desc(struct vcpu *vcpu, int reg, struct seg_desc *desc)
1284366f6083SPeter Grehan {
1285366f6083SPeter Grehan
1286366f6083SPeter Grehan if (!is_segment_register(reg) && !is_descriptor_table(reg))
1287366f6083SPeter Grehan return (EINVAL);
1288366f6083SPeter Grehan
1289d3956e46SJohn Baldwin return (vmmops_getdesc(vcpu->cookie, reg, desc));
1290366f6083SPeter Grehan }
1291366f6083SPeter Grehan
1292366f6083SPeter Grehan int
vm_set_seg_desc(struct vcpu * vcpu,int reg,struct seg_desc * desc)12933f0f4b15SJohn Baldwin vm_set_seg_desc(struct vcpu *vcpu, int reg, struct seg_desc *desc)
1294366f6083SPeter Grehan {
1295366f6083SPeter Grehan
1296366f6083SPeter Grehan if (!is_segment_register(reg) && !is_descriptor_table(reg))
1297366f6083SPeter Grehan return (EINVAL);
1298366f6083SPeter Grehan
12993f0f4b15SJohn Baldwin return (vmmops_setdesc(vcpu->cookie, reg, desc));
1300366f6083SPeter Grehan }
1301366f6083SPeter Grehan
1302366f6083SPeter Grehan static void
restore_guest_fpustate(struct vcpu * vcpu)1303366f6083SPeter Grehan restore_guest_fpustate(struct vcpu *vcpu)
1304366f6083SPeter Grehan {
1305366f6083SPeter Grehan
130638f1b189SPeter Grehan /* flush host state to the pcb */
130738f1b189SPeter Grehan fpuexit(curthread);
1308bd8572e0SNeel Natu
1309bd8572e0SNeel Natu /* restore guest FPU state */
1310cc1cb9eaSJohn Baldwin fpu_enable();
131138f1b189SPeter Grehan fpurestore(vcpu->guestfpu);
1312bd8572e0SNeel Natu
1313abb023fbSJohn Baldwin /* restore guest XCR0 if XSAVE is enabled in the host */
1314abb023fbSJohn Baldwin if (rcr4() & CR4_XSAVE)
1315abb023fbSJohn Baldwin load_xcr(0, vcpu->guest_xcr0);
1316abb023fbSJohn Baldwin
1317bd8572e0SNeel Natu /*
1318cc1cb9eaSJohn Baldwin * The FPU is now "dirty" with the guest's state so disable
1319cc1cb9eaSJohn Baldwin * the FPU to trap any access by the host.
1320bd8572e0SNeel Natu */
1321cc1cb9eaSJohn Baldwin fpu_disable();
1322366f6083SPeter Grehan }
1323366f6083SPeter Grehan
1324366f6083SPeter Grehan static void
save_guest_fpustate(struct vcpu * vcpu)1325366f6083SPeter Grehan save_guest_fpustate(struct vcpu *vcpu)
1326366f6083SPeter Grehan {
1327366f6083SPeter Grehan
1328bd8572e0SNeel Natu if ((rcr0() & CR0_TS) == 0)
1329bd8572e0SNeel Natu panic("fpu emulation not enabled in host!");
1330bd8572e0SNeel Natu
1331abb023fbSJohn Baldwin /* save guest XCR0 and restore host XCR0 */
1332abb023fbSJohn Baldwin if (rcr4() & CR4_XSAVE) {
1333abb023fbSJohn Baldwin vcpu->guest_xcr0 = rxcr(0);
1334abb023fbSJohn Baldwin load_xcr(0, vmm_get_host_xcr0());
1335abb023fbSJohn Baldwin }
1336abb023fbSJohn Baldwin
1337bd8572e0SNeel Natu /* save guest FPU state */
1338cc1cb9eaSJohn Baldwin fpu_enable();
133938f1b189SPeter Grehan fpusave(vcpu->guestfpu);
1340cc1cb9eaSJohn Baldwin fpu_disable();
1341366f6083SPeter Grehan }
1342366f6083SPeter Grehan
134361592433SNeel Natu static VMM_STAT(VCPU_IDLE_TICKS, "number of ticks vcpu was idle");
1344f76fc5d4SNeel Natu
1345318224bbSNeel Natu static int
vcpu_set_state_locked(struct vcpu * vcpu,enum vcpu_state newstate,bool from_idle)13463f0f4b15SJohn Baldwin vcpu_set_state_locked(struct vcpu *vcpu, enum vcpu_state newstate,
1347f80330a8SNeel Natu bool from_idle)
1348366f6083SPeter Grehan {
1349318224bbSNeel Natu int error;
1350366f6083SPeter Grehan
1351318224bbSNeel Natu vcpu_assert_locked(vcpu);
1352366f6083SPeter Grehan
1353f76fc5d4SNeel Natu /*
1354f80330a8SNeel Natu * State transitions from the vmmdev_ioctl() must always begin from
1355f80330a8SNeel Natu * the VCPU_IDLE state. This guarantees that there is only a single
1356f80330a8SNeel Natu * ioctl() operating on a vcpu at any point.
1357f80330a8SNeel Natu */
1358f80330a8SNeel Natu if (from_idle) {
1359248e6799SNeel Natu while (vcpu->state != VCPU_IDLE) {
1360248e6799SNeel Natu vcpu->reqidle = 1;
1361248e6799SNeel Natu vcpu_notify_event_locked(vcpu, false);
13623f0f4b15SJohn Baldwin VMM_CTR1(vcpu, "vcpu state change from %s to "
1363248e6799SNeel Natu "idle requested", vcpu_state2str(vcpu->state));
1364f80330a8SNeel Natu msleep_spin(&vcpu->state, &vcpu->mtx, "vmstat", hz);
1365248e6799SNeel Natu }
1366f80330a8SNeel Natu } else {
1367f80330a8SNeel Natu KASSERT(vcpu->state != VCPU_IDLE, ("invalid transition from "
1368f80330a8SNeel Natu "vcpu idle state"));
1369f80330a8SNeel Natu }
1370f80330a8SNeel Natu
1371ef39d7e9SNeel Natu if (vcpu->state == VCPU_RUNNING) {
1372ef39d7e9SNeel Natu KASSERT(vcpu->hostcpu == curcpu, ("curcpu %d and hostcpu %d "
1373ef39d7e9SNeel Natu "mismatch for running vcpu", curcpu, vcpu->hostcpu));
1374ef39d7e9SNeel Natu } else {
1375ef39d7e9SNeel Natu KASSERT(vcpu->hostcpu == NOCPU, ("Invalid hostcpu %d for a "
1376ef39d7e9SNeel Natu "vcpu that is not running", vcpu->hostcpu));
1377ef39d7e9SNeel Natu }
1378ef39d7e9SNeel Natu
1379f80330a8SNeel Natu /*
1380318224bbSNeel Natu * The following state transitions are allowed:
1381318224bbSNeel Natu * IDLE -> FROZEN -> IDLE
1382318224bbSNeel Natu * FROZEN -> RUNNING -> FROZEN
1383318224bbSNeel Natu * FROZEN -> SLEEPING -> FROZEN
1384f76fc5d4SNeel Natu */
1385318224bbSNeel Natu switch (vcpu->state) {
1386318224bbSNeel Natu case VCPU_IDLE:
1387318224bbSNeel Natu case VCPU_RUNNING:
1388318224bbSNeel Natu case VCPU_SLEEPING:
1389318224bbSNeel Natu error = (newstate != VCPU_FROZEN);
1390318224bbSNeel Natu break;
1391318224bbSNeel Natu case VCPU_FROZEN:
1392318224bbSNeel Natu error = (newstate == VCPU_FROZEN);
1393318224bbSNeel Natu break;
1394318224bbSNeel Natu default:
1395318224bbSNeel Natu error = 1;
1396318224bbSNeel Natu break;
1397318224bbSNeel Natu }
1398318224bbSNeel Natu
1399f80330a8SNeel Natu if (error)
1400f80330a8SNeel Natu return (EBUSY);
1401318224bbSNeel Natu
14023f0f4b15SJohn Baldwin VMM_CTR2(vcpu, "vcpu state changed from %s to %s",
1403248e6799SNeel Natu vcpu_state2str(vcpu->state), vcpu_state2str(newstate));
1404248e6799SNeel Natu
1405f80330a8SNeel Natu vcpu->state = newstate;
1406ef39d7e9SNeel Natu if (newstate == VCPU_RUNNING)
1407ef39d7e9SNeel Natu vcpu->hostcpu = curcpu;
1408ef39d7e9SNeel Natu else
1409ef39d7e9SNeel Natu vcpu->hostcpu = NOCPU;
1410ef39d7e9SNeel Natu
1411f80330a8SNeel Natu if (newstate == VCPU_IDLE)
1412f80330a8SNeel Natu wakeup(&vcpu->state);
1413f80330a8SNeel Natu
1414f80330a8SNeel Natu return (0);
1415318224bbSNeel Natu }
1416318224bbSNeel Natu
1417318224bbSNeel Natu static void
vcpu_require_state(struct vcpu * vcpu,enum vcpu_state newstate)14183f0f4b15SJohn Baldwin vcpu_require_state(struct vcpu *vcpu, enum vcpu_state newstate)
1419318224bbSNeel Natu {
1420318224bbSNeel Natu int error;
1421318224bbSNeel Natu
14223f0f4b15SJohn Baldwin if ((error = vcpu_set_state(vcpu, newstate, false)) != 0)
1423318224bbSNeel Natu panic("Error %d setting state to %d\n", error, newstate);
1424318224bbSNeel Natu }
1425318224bbSNeel Natu
1426318224bbSNeel Natu static void
vcpu_require_state_locked(struct vcpu * vcpu,enum vcpu_state newstate)14273f0f4b15SJohn Baldwin vcpu_require_state_locked(struct vcpu *vcpu, enum vcpu_state newstate)
1428318224bbSNeel Natu {
1429318224bbSNeel Natu int error;
1430318224bbSNeel Natu
14313f0f4b15SJohn Baldwin if ((error = vcpu_set_state_locked(vcpu, newstate, false)) != 0)
1432318224bbSNeel Natu panic("Error %d setting state to %d", error, newstate);
1433318224bbSNeel Natu }
1434318224bbSNeel Natu
1435b837daddSKonstantin Belousov static int
vm_handle_rendezvous(struct vcpu * vcpu)1436d8be3d52SJohn Baldwin vm_handle_rendezvous(struct vcpu *vcpu)
14375b8a8cd1SNeel Natu {
1438d8be3d52SJohn Baldwin struct vm *vm = vcpu->vm;
1439b837daddSKonstantin Belousov struct thread *td;
1440d8be3d52SJohn Baldwin int error, vcpuid;
14415b8a8cd1SNeel Natu
1442b837daddSKonstantin Belousov error = 0;
1443d8be3d52SJohn Baldwin vcpuid = vcpu->vcpuid;
1444b837daddSKonstantin Belousov td = curthread;
14455b8a8cd1SNeel Natu mtx_lock(&vm->rendezvous_mtx);
14465b8a8cd1SNeel Natu while (vm->rendezvous_func != NULL) {
144722d822c6SNeel Natu /* 'rendezvous_req_cpus' must be a subset of 'active_cpus' */
1448e2650af1SStefan Eßer CPU_AND(&vm->rendezvous_req_cpus, &vm->rendezvous_req_cpus, &vm->active_cpus);
144922d822c6SNeel Natu
1450949f0f47SJohn Baldwin if (CPU_ISSET(vcpuid, &vm->rendezvous_req_cpus) &&
145122d822c6SNeel Natu !CPU_ISSET(vcpuid, &vm->rendezvous_done_cpus)) {
1452d8be3d52SJohn Baldwin VMM_CTR0(vcpu, "Calling rendezvous func");
1453d8be3d52SJohn Baldwin (*vm->rendezvous_func)(vcpu, vm->rendezvous_arg);
14545b8a8cd1SNeel Natu CPU_SET(vcpuid, &vm->rendezvous_done_cpus);
14555b8a8cd1SNeel Natu }
14565b8a8cd1SNeel Natu if (CPU_CMP(&vm->rendezvous_req_cpus,
14575b8a8cd1SNeel Natu &vm->rendezvous_done_cpus) == 0) {
1458d8be3d52SJohn Baldwin VMM_CTR0(vcpu, "Rendezvous completed");
1459892feec2SCorvin Köhne CPU_ZERO(&vm->rendezvous_req_cpus);
1460869dbab7SAndriy Gapon vm->rendezvous_func = NULL;
14615b8a8cd1SNeel Natu wakeup(&vm->rendezvous_func);
14625b8a8cd1SNeel Natu break;
14635b8a8cd1SNeel Natu }
1464d8be3d52SJohn Baldwin VMM_CTR0(vcpu, "Wait for rendezvous completion");
14655b8a8cd1SNeel Natu mtx_sleep(&vm->rendezvous_func, &vm->rendezvous_mtx, 0,
1466b837daddSKonstantin Belousov "vmrndv", hz);
1467c6d31b83SKonstantin Belousov if (td_ast_pending(td, TDA_SUSPEND)) {
1468b837daddSKonstantin Belousov mtx_unlock(&vm->rendezvous_mtx);
1469b837daddSKonstantin Belousov error = thread_check_susp(td, true);
1470b837daddSKonstantin Belousov if (error != 0)
1471b837daddSKonstantin Belousov return (error);
1472b837daddSKonstantin Belousov mtx_lock(&vm->rendezvous_mtx);
1473b837daddSKonstantin Belousov }
14745b8a8cd1SNeel Natu }
14755b8a8cd1SNeel Natu mtx_unlock(&vm->rendezvous_mtx);
1476b837daddSKonstantin Belousov return (0);
14775b8a8cd1SNeel Natu }
14785b8a8cd1SNeel Natu
1479318224bbSNeel Natu /*
1480318224bbSNeel Natu * Emulate a guest 'hlt' by sleeping until the vcpu is ready to run.
1481318224bbSNeel Natu */
1482318224bbSNeel Natu static int
vm_handle_hlt(struct vcpu * vcpu,bool intr_disabled,bool * retu)14833f0f4b15SJohn Baldwin vm_handle_hlt(struct vcpu *vcpu, bool intr_disabled, bool *retu)
1484318224bbSNeel Natu {
14853f0f4b15SJohn Baldwin struct vm *vm = vcpu->vm;
1486c6a0cc2eSNeel Natu const char *wmesg;
1487b837daddSKonstantin Belousov struct thread *td;
14883f0f4b15SJohn Baldwin int error, t, vcpuid, vcpu_halted, vm_halted;
1489e50ce2aaSNeel Natu
14903f0f4b15SJohn Baldwin vcpuid = vcpu->vcpuid;
1491e50ce2aaSNeel Natu vcpu_halted = 0;
1492e50ce2aaSNeel Natu vm_halted = 0;
1493b837daddSKonstantin Belousov error = 0;
1494b837daddSKonstantin Belousov td = curthread;
1495318224bbSNeel Natu
14963f0f4b15SJohn Baldwin KASSERT(!CPU_ISSET(vcpuid, &vm->halted_cpus), ("vcpu already halted"));
14973f0f4b15SJohn Baldwin
1498f76fc5d4SNeel Natu vcpu_lock(vcpu);
1499c6a0cc2eSNeel Natu while (1) {
1500f76fc5d4SNeel Natu /*
1501f76fc5d4SNeel Natu * Do a final check for pending NMI or interrupts before
1502c6a0cc2eSNeel Natu * really putting this thread to sleep. Also check for
1503c6a0cc2eSNeel Natu * software events that would cause this vcpu to wakeup.
1504f76fc5d4SNeel Natu *
1505c6a0cc2eSNeel Natu * These interrupts/events could have happened after the
150615add60dSPeter Grehan * vcpu returned from vmmops_run() and before it acquired the
1507c6a0cc2eSNeel Natu * vcpu lock above.
1508f76fc5d4SNeel Natu */
1509248e6799SNeel Natu if (vm->rendezvous_func != NULL || vm->suspend || vcpu->reqidle)
1510c6a0cc2eSNeel Natu break;
151180cb5d84SJohn Baldwin if (vm_nmi_pending(vcpu))
1512c6a0cc2eSNeel Natu break;
1513c6a0cc2eSNeel Natu if (!intr_disabled) {
151480cb5d84SJohn Baldwin if (vm_extint_pending(vcpu) ||
1515c6a0cc2eSNeel Natu vlapic_pending_intr(vcpu->vlapic, NULL)) {
1516c6a0cc2eSNeel Natu break;
1517c6a0cc2eSNeel Natu }
1518c6a0cc2eSNeel Natu }
1519c6a0cc2eSNeel Natu
1520f008d157SNeel Natu /* Don't go to sleep if the vcpu thread needs to yield */
152180cb5d84SJohn Baldwin if (vcpu_should_yield(vcpu))
1522f008d157SNeel Natu break;
1523f008d157SNeel Natu
152480cb5d84SJohn Baldwin if (vcpu_debugged(vcpu))
1525fc276d92SJohn Baldwin break;
1526fc276d92SJohn Baldwin
1527e50ce2aaSNeel Natu /*
1528e50ce2aaSNeel Natu * Some Linux guests implement "halt" by having all vcpus
1529e50ce2aaSNeel Natu * execute HLT with interrupts disabled. 'halted_cpus' keeps
1530e50ce2aaSNeel Natu * track of the vcpus that have entered this state. When all
1531e50ce2aaSNeel Natu * vcpus enter the halted state the virtual machine is halted.
1532e50ce2aaSNeel Natu */
1533e50ce2aaSNeel Natu if (intr_disabled) {
1534c6a0cc2eSNeel Natu wmesg = "vmhalt";
15353f0f4b15SJohn Baldwin VMM_CTR0(vcpu, "Halted");
1536055fc2cbSNeel Natu if (!vcpu_halted && halt_detection_enabled) {
1537e50ce2aaSNeel Natu vcpu_halted = 1;
1538e50ce2aaSNeel Natu CPU_SET_ATOMIC(vcpuid, &vm->halted_cpus);
1539e50ce2aaSNeel Natu }
1540e50ce2aaSNeel Natu if (CPU_CMP(&vm->halted_cpus, &vm->active_cpus) == 0) {
1541e50ce2aaSNeel Natu vm_halted = 1;
1542e50ce2aaSNeel Natu break;
1543e50ce2aaSNeel Natu }
1544e50ce2aaSNeel Natu } else {
1545e50ce2aaSNeel Natu wmesg = "vmidle";
1546e50ce2aaSNeel Natu }
1547c6a0cc2eSNeel Natu
1548f76fc5d4SNeel Natu t = ticks;
15493f0f4b15SJohn Baldwin vcpu_require_state_locked(vcpu, VCPU_SLEEPING);
1550f008d157SNeel Natu /*
1551f008d157SNeel Natu * XXX msleep_spin() cannot be interrupted by signals so
1552f008d157SNeel Natu * wake up periodically to check pending signals.
1553f008d157SNeel Natu */
1554f008d157SNeel Natu msleep_spin(vcpu, &vcpu->mtx, wmesg, hz);
15553f0f4b15SJohn Baldwin vcpu_require_state_locked(vcpu, VCPU_FROZEN);
15563dc3d32aSJohn Baldwin vmm_stat_incr(vcpu, VCPU_IDLE_TICKS, ticks - t);
1557c6d31b83SKonstantin Belousov if (td_ast_pending(td, TDA_SUSPEND)) {
1558b837daddSKonstantin Belousov vcpu_unlock(vcpu);
1559b837daddSKonstantin Belousov error = thread_check_susp(td, false);
15604d447b30SKonstantin Belousov if (error != 0) {
15614d447b30SKonstantin Belousov if (vcpu_halted) {
15624d447b30SKonstantin Belousov CPU_CLR_ATOMIC(vcpuid,
15634d447b30SKonstantin Belousov &vm->halted_cpus);
15644d447b30SKonstantin Belousov }
1565b837daddSKonstantin Belousov return (error);
15664d447b30SKonstantin Belousov }
1567b837daddSKonstantin Belousov vcpu_lock(vcpu);
1568b837daddSKonstantin Belousov }
1569f76fc5d4SNeel Natu }
1570e50ce2aaSNeel Natu
1571e50ce2aaSNeel Natu if (vcpu_halted)
1572e50ce2aaSNeel Natu CPU_CLR_ATOMIC(vcpuid, &vm->halted_cpus);
1573e50ce2aaSNeel Natu
1574f76fc5d4SNeel Natu vcpu_unlock(vcpu);
1575f76fc5d4SNeel Natu
1576e50ce2aaSNeel Natu if (vm_halted)
1577e50ce2aaSNeel Natu vm_suspend(vm, VM_SUSPEND_HALT);
1578e50ce2aaSNeel Natu
1579318224bbSNeel Natu return (0);
1580318224bbSNeel Natu }
1581318224bbSNeel Natu
1582318224bbSNeel Natu static int
vm_handle_paging(struct vcpu * vcpu,bool * retu)15833f0f4b15SJohn Baldwin vm_handle_paging(struct vcpu *vcpu, bool *retu)
1584318224bbSNeel Natu {
15853f0f4b15SJohn Baldwin struct vm *vm = vcpu->vm;
1586318224bbSNeel Natu int rv, ftype;
1587318224bbSNeel Natu struct vm_map *map;
1588318224bbSNeel Natu struct vm_exit *vme;
1589318224bbSNeel Natu
1590318224bbSNeel Natu vme = &vcpu->exitinfo;
1591318224bbSNeel Natu
1592d087a399SNeel Natu KASSERT(vme->inst_length == 0, ("%s: invalid inst_length %d",
1593d087a399SNeel Natu __func__, vme->inst_length));
1594d087a399SNeel Natu
1595318224bbSNeel Natu ftype = vme->u.paging.fault_type;
1596318224bbSNeel Natu KASSERT(ftype == VM_PROT_READ ||
1597318224bbSNeel Natu ftype == VM_PROT_WRITE || ftype == VM_PROT_EXECUTE,
1598318224bbSNeel Natu ("vm_handle_paging: invalid fault_type %d", ftype));
1599318224bbSNeel Natu
1600318224bbSNeel Natu if (ftype == VM_PROT_READ || ftype == VM_PROT_WRITE) {
1601318224bbSNeel Natu rv = pmap_emulate_accessed_dirty(vmspace_pmap(vm->vmspace),
1602318224bbSNeel Natu vme->u.paging.gpa, ftype);
16039d8d8e3eSNeel Natu if (rv == 0) {
16043f0f4b15SJohn Baldwin VMM_CTR2(vcpu, "%s bit emulation for gpa %#lx",
16059d8d8e3eSNeel Natu ftype == VM_PROT_READ ? "accessed" : "dirty",
16069d8d8e3eSNeel Natu vme->u.paging.gpa);
1607318224bbSNeel Natu goto done;
1608318224bbSNeel Natu }
16099d8d8e3eSNeel Natu }
1610318224bbSNeel Natu
1611318224bbSNeel Natu map = &vm->vmspace->vm_map;
1612df08823dSKonstantin Belousov rv = vm_fault(map, vme->u.paging.gpa, ftype, VM_FAULT_NORMAL, NULL);
1613318224bbSNeel Natu
16143f0f4b15SJohn Baldwin VMM_CTR3(vcpu, "vm_handle_paging rv = %d, gpa = %#lx, "
1615513c8d33SNeel Natu "ftype = %d", rv, vme->u.paging.gpa, ftype);
1616318224bbSNeel Natu
1617318224bbSNeel Natu if (rv != KERN_SUCCESS)
1618318224bbSNeel Natu return (EFAULT);
1619318224bbSNeel Natu done:
1620318224bbSNeel Natu return (0);
1621318224bbSNeel Natu }
1622318224bbSNeel Natu
1623318224bbSNeel Natu static int
vm_handle_inst_emul(struct vcpu * vcpu,bool * retu)16243f0f4b15SJohn Baldwin vm_handle_inst_emul(struct vcpu *vcpu, bool *retu)
1625318224bbSNeel Natu {
1626318224bbSNeel Natu struct vie *vie;
1627318224bbSNeel Natu struct vm_exit *vme;
1628e4f605eeSTycho Nightingale uint64_t gla, gpa, cs_base;
1629e813a873SNeel Natu struct vm_guest_paging *paging;
1630565bbb86SNeel Natu mem_region_read_t mread;
1631565bbb86SNeel Natu mem_region_write_t mwrite;
1632f7a9f178SNeel Natu enum vm_cpu_mode cpu_mode;
16331c73ea3eSNeel Natu int cs_d, error, fault;
1634318224bbSNeel Natu
1635318224bbSNeel Natu vme = &vcpu->exitinfo;
1636318224bbSNeel Natu
16371c73ea3eSNeel Natu KASSERT(vme->inst_length == 0, ("%s: invalid inst_length %d",
16381c73ea3eSNeel Natu __func__, vme->inst_length));
16391c73ea3eSNeel Natu
1640318224bbSNeel Natu gla = vme->u.inst_emul.gla;
1641318224bbSNeel Natu gpa = vme->u.inst_emul.gpa;
1642e4f605eeSTycho Nightingale cs_base = vme->u.inst_emul.cs_base;
1643f7a9f178SNeel Natu cs_d = vme->u.inst_emul.cs_d;
1644318224bbSNeel Natu vie = &vme->u.inst_emul.vie;
1645e813a873SNeel Natu paging = &vme->u.inst_emul.paging;
1646f7a9f178SNeel Natu cpu_mode = paging->cpu_mode;
1647318224bbSNeel Natu
16483f0f4b15SJohn Baldwin VMM_CTR1(vcpu, "inst_emul fault accessing gpa %#lx", gpa);
16499d8d8e3eSNeel Natu
1650318224bbSNeel Natu /* Fetch, decode and emulate the faulting instruction */
1651c2a875f9SNeel Natu if (vie->num_valid == 0) {
1652d3956e46SJohn Baldwin error = vmm_fetch_instruction(vcpu, paging, vme->rip + cs_base,
1653d3956e46SJohn Baldwin VIE_INST_SIZE, vie, &fault);
1654c2a875f9SNeel Natu } else {
1655c2a875f9SNeel Natu /*
1656c2a875f9SNeel Natu * The instruction bytes have already been copied into 'vie'
1657c2a875f9SNeel Natu */
16589c4d5478SNeel Natu error = fault = 0;
1659c2a875f9SNeel Natu }
16609c4d5478SNeel Natu if (error || fault)
16619c4d5478SNeel Natu return (error);
1662318224bbSNeel Natu
1663d3956e46SJohn Baldwin if (vmm_decode_instruction(vcpu, gla, cpu_mode, cs_d, vie) != 0) {
16643f0f4b15SJohn Baldwin VMM_CTR1(vcpu, "Error decoding instruction at %#lx",
1665c07a0648SNeel Natu vme->rip + cs_base);
1666c07a0648SNeel Natu *retu = true; /* dump instruction bytes in userspace */
1667c07a0648SNeel Natu return (0);
1668c07a0648SNeel Natu }
1669318224bbSNeel Natu
1670a0b78f09SPeter Grehan /*
16711c73ea3eSNeel Natu * Update 'nextrip' based on the length of the emulated instruction.
1672a0b78f09SPeter Grehan */
1673a0b78f09SPeter Grehan vme->inst_length = vie->num_processed;
1674d087a399SNeel Natu vcpu->nextrip += vie->num_processed;
16753f0f4b15SJohn Baldwin VMM_CTR1(vcpu, "nextrip updated to %#lx after instruction decoding",
16763f0f4b15SJohn Baldwin vcpu->nextrip);
1677a0b78f09SPeter Grehan
167808e3ff32SNeel Natu /* return to userland unless this is an in-kernel emulated device */
1679565bbb86SNeel Natu if (gpa >= DEFAULT_APIC_BASE && gpa < DEFAULT_APIC_BASE + PAGE_SIZE) {
1680565bbb86SNeel Natu mread = lapic_mmio_read;
1681565bbb86SNeel Natu mwrite = lapic_mmio_write;
1682565bbb86SNeel Natu } else if (gpa >= VIOAPIC_BASE && gpa < VIOAPIC_BASE + VIOAPIC_SIZE) {
1683565bbb86SNeel Natu mread = vioapic_mmio_read;
1684565bbb86SNeel Natu mwrite = vioapic_mmio_write;
168508e3ff32SNeel Natu } else if (gpa >= VHPET_BASE && gpa < VHPET_BASE + VHPET_SIZE) {
168608e3ff32SNeel Natu mread = vhpet_mmio_read;
168708e3ff32SNeel Natu mwrite = vhpet_mmio_write;
1688565bbb86SNeel Natu } else {
1689becd9849SNeel Natu *retu = true;
1690318224bbSNeel Natu return (0);
1691318224bbSNeel Natu }
1692318224bbSNeel Natu
1693d3956e46SJohn Baldwin error = vmm_emulate_instruction(vcpu, gpa, vie, paging, mread, mwrite,
1694d3956e46SJohn Baldwin retu);
1695318224bbSNeel Natu
1696318224bbSNeel Natu return (error);
1697318224bbSNeel Natu }
1698318224bbSNeel Natu
1699b15a09c0SNeel Natu static int
vm_handle_suspend(struct vcpu * vcpu,bool * retu)17003f0f4b15SJohn Baldwin vm_handle_suspend(struct vcpu *vcpu, bool *retu)
1701b15a09c0SNeel Natu {
17023f0f4b15SJohn Baldwin struct vm *vm = vcpu->vm;
1703b837daddSKonstantin Belousov int error, i;
1704b837daddSKonstantin Belousov struct thread *td;
1705b15a09c0SNeel Natu
1706b837daddSKonstantin Belousov error = 0;
1707b837daddSKonstantin Belousov td = curthread;
1708b15a09c0SNeel Natu
17093f0f4b15SJohn Baldwin CPU_SET_ATOMIC(vcpu->vcpuid, &vm->suspended_cpus);
1710b15a09c0SNeel Natu
1711b15a09c0SNeel Natu /*
1712b15a09c0SNeel Natu * Wait until all 'active_cpus' have suspended themselves.
1713b15a09c0SNeel Natu *
1714b15a09c0SNeel Natu * Since a VM may be suspended at any time including when one or
1715b15a09c0SNeel Natu * more vcpus are doing a rendezvous we need to call the rendezvous
1716b15a09c0SNeel Natu * handler while we are waiting to prevent a deadlock.
1717b15a09c0SNeel Natu */
1718b15a09c0SNeel Natu vcpu_lock(vcpu);
1719b837daddSKonstantin Belousov while (error == 0) {
1720b15a09c0SNeel Natu if (CPU_CMP(&vm->suspended_cpus, &vm->active_cpus) == 0) {
17213f0f4b15SJohn Baldwin VMM_CTR0(vcpu, "All vcpus suspended");
1722b15a09c0SNeel Natu break;
1723b15a09c0SNeel Natu }
1724b15a09c0SNeel Natu
1725b15a09c0SNeel Natu if (vm->rendezvous_func == NULL) {
17263f0f4b15SJohn Baldwin VMM_CTR0(vcpu, "Sleeping during suspend");
17273f0f4b15SJohn Baldwin vcpu_require_state_locked(vcpu, VCPU_SLEEPING);
1728b15a09c0SNeel Natu msleep_spin(vcpu, &vcpu->mtx, "vmsusp", hz);
17293f0f4b15SJohn Baldwin vcpu_require_state_locked(vcpu, VCPU_FROZEN);
1730c6d31b83SKonstantin Belousov if (td_ast_pending(td, TDA_SUSPEND)) {
1731b837daddSKonstantin Belousov vcpu_unlock(vcpu);
1732b837daddSKonstantin Belousov error = thread_check_susp(td, false);
1733b837daddSKonstantin Belousov vcpu_lock(vcpu);
1734b837daddSKonstantin Belousov }
1735b15a09c0SNeel Natu } else {
17363f0f4b15SJohn Baldwin VMM_CTR0(vcpu, "Rendezvous during suspend");
1737b15a09c0SNeel Natu vcpu_unlock(vcpu);
1738d8be3d52SJohn Baldwin error = vm_handle_rendezvous(vcpu);
1739b15a09c0SNeel Natu vcpu_lock(vcpu);
1740b15a09c0SNeel Natu }
1741b15a09c0SNeel Natu }
1742b15a09c0SNeel Natu vcpu_unlock(vcpu);
1743b15a09c0SNeel Natu
1744b15a09c0SNeel Natu /*
1745b15a09c0SNeel Natu * Wakeup the other sleeping vcpus and return to userspace.
1746b15a09c0SNeel Natu */
1747a488c9c9SRodney W. Grimes for (i = 0; i < vm->maxcpus; i++) {
1748b15a09c0SNeel Natu if (CPU_ISSET(i, &vm->suspended_cpus)) {
17493f0f4b15SJohn Baldwin vcpu_notify_event(vm_vcpu(vm, i), false);
1750b15a09c0SNeel Natu }
1751b15a09c0SNeel Natu }
1752b15a09c0SNeel Natu
1753b15a09c0SNeel Natu *retu = true;
1754b837daddSKonstantin Belousov return (error);
1755b15a09c0SNeel Natu }
1756b15a09c0SNeel Natu
1757248e6799SNeel Natu static int
vm_handle_reqidle(struct vcpu * vcpu,bool * retu)17583f0f4b15SJohn Baldwin vm_handle_reqidle(struct vcpu *vcpu, bool *retu)
1759248e6799SNeel Natu {
1760248e6799SNeel Natu vcpu_lock(vcpu);
1761248e6799SNeel Natu KASSERT(vcpu->reqidle, ("invalid vcpu reqidle %d", vcpu->reqidle));
1762248e6799SNeel Natu vcpu->reqidle = 0;
1763248e6799SNeel Natu vcpu_unlock(vcpu);
1764248e6799SNeel Natu *retu = true;
1765248e6799SNeel Natu return (0);
1766248e6799SNeel Natu }
1767248e6799SNeel Natu
1768e3b4fe64SBojan Novković static int
vm_handle_db(struct vcpu * vcpu,struct vm_exit * vme,bool * retu)1769e3b4fe64SBojan Novković vm_handle_db(struct vcpu *vcpu, struct vm_exit *vme, bool *retu)
1770e3b4fe64SBojan Novković {
1771e3b4fe64SBojan Novković int error, fault;
1772e3b4fe64SBojan Novković uint64_t rsp;
1773e3b4fe64SBojan Novković uint64_t rflags;
1774e3b4fe64SBojan Novković struct vm_copyinfo copyinfo;
1775e3b4fe64SBojan Novković
1776e3b4fe64SBojan Novković *retu = true;
1777e3b4fe64SBojan Novković if (!vme->u.dbg.pushf_intercept || vme->u.dbg.tf_shadow_val != 0) {
1778e3b4fe64SBojan Novković return (0);
1779e3b4fe64SBojan Novković }
1780e3b4fe64SBojan Novković
1781e3b4fe64SBojan Novković vm_get_register(vcpu, VM_REG_GUEST_RSP, &rsp);
1782e3b4fe64SBojan Novković error = vm_copy_setup(vcpu, &vme->u.dbg.paging, rsp, sizeof(uint64_t),
1783e3b4fe64SBojan Novković VM_PROT_RW, ©info, 1, &fault);
1784e3b4fe64SBojan Novković if (error != 0 || fault != 0) {
1785e3b4fe64SBojan Novković *retu = false;
1786e3b4fe64SBojan Novković return (EINVAL);
1787e3b4fe64SBojan Novković }
1788e3b4fe64SBojan Novković
1789e3b4fe64SBojan Novković /* Read pushed rflags value from top of stack. */
1790e3b4fe64SBojan Novković vm_copyin(©info, &rflags, sizeof(uint64_t));
1791e3b4fe64SBojan Novković
1792e3b4fe64SBojan Novković /* Clear TF bit. */
1793e3b4fe64SBojan Novković rflags &= ~(PSL_T);
1794e3b4fe64SBojan Novković
1795e3b4fe64SBojan Novković /* Write updated value back to memory. */
1796e3b4fe64SBojan Novković vm_copyout(&rflags, ©info, sizeof(uint64_t));
1797e3b4fe64SBojan Novković vm_copy_teardown(©info, 1);
1798e3b4fe64SBojan Novković
1799e3b4fe64SBojan Novković return (0);
1800e3b4fe64SBojan Novković }
1801e3b4fe64SBojan Novković
1802b15a09c0SNeel Natu int
vm_suspend(struct vm * vm,enum vm_suspend_how how)1803f0fdcfe2SNeel Natu vm_suspend(struct vm *vm, enum vm_suspend_how how)
1804b15a09c0SNeel Natu {
1805f0fdcfe2SNeel Natu int i;
1806b15a09c0SNeel Natu
1807f0fdcfe2SNeel Natu if (how <= VM_SUSPEND_NONE || how >= VM_SUSPEND_LAST)
1808f0fdcfe2SNeel Natu return (EINVAL);
1809f0fdcfe2SNeel Natu
1810f0fdcfe2SNeel Natu if (atomic_cmpset_int(&vm->suspend, 0, how) == 0) {
1811f0fdcfe2SNeel Natu VM_CTR2(vm, "virtual machine already suspended %d/%d",
1812f0fdcfe2SNeel Natu vm->suspend, how);
1813b15a09c0SNeel Natu return (EALREADY);
1814b15a09c0SNeel Natu }
1815f0fdcfe2SNeel Natu
1816f0fdcfe2SNeel Natu VM_CTR1(vm, "virtual machine successfully suspended %d", how);
1817f0fdcfe2SNeel Natu
1818f0fdcfe2SNeel Natu /*
1819f0fdcfe2SNeel Natu * Notify all active vcpus that they are now suspended.
1820f0fdcfe2SNeel Natu */
1821a488c9c9SRodney W. Grimes for (i = 0; i < vm->maxcpus; i++) {
1822f0fdcfe2SNeel Natu if (CPU_ISSET(i, &vm->active_cpus))
18233f0f4b15SJohn Baldwin vcpu_notify_event(vm_vcpu(vm, i), false);
1824f0fdcfe2SNeel Natu }
1825f0fdcfe2SNeel Natu
1826f0fdcfe2SNeel Natu return (0);
1827f0fdcfe2SNeel Natu }
1828f0fdcfe2SNeel Natu
1829f0fdcfe2SNeel Natu void
vm_exit_suspended(struct vcpu * vcpu,uint64_t rip)183080cb5d84SJohn Baldwin vm_exit_suspended(struct vcpu *vcpu, uint64_t rip)
1831f0fdcfe2SNeel Natu {
183280cb5d84SJohn Baldwin struct vm *vm = vcpu->vm;
1833f0fdcfe2SNeel Natu struct vm_exit *vmexit;
1834f0fdcfe2SNeel Natu
1835f0fdcfe2SNeel Natu KASSERT(vm->suspend > VM_SUSPEND_NONE && vm->suspend < VM_SUSPEND_LAST,
1836f0fdcfe2SNeel Natu ("vm_exit_suspended: invalid suspend type %d", vm->suspend));
1837f0fdcfe2SNeel Natu
183880cb5d84SJohn Baldwin vmexit = vm_exitinfo(vcpu);
1839f0fdcfe2SNeel Natu vmexit->rip = rip;
1840f0fdcfe2SNeel Natu vmexit->inst_length = 0;
1841f0fdcfe2SNeel Natu vmexit->exitcode = VM_EXITCODE_SUSPENDED;
1842f0fdcfe2SNeel Natu vmexit->u.suspended.how = vm->suspend;
1843b15a09c0SNeel Natu }
1844b15a09c0SNeel Natu
184540487465SNeel Natu void
vm_exit_debug(struct vcpu * vcpu,uint64_t rip)184680cb5d84SJohn Baldwin vm_exit_debug(struct vcpu *vcpu, uint64_t rip)
1847fc276d92SJohn Baldwin {
1848fc276d92SJohn Baldwin struct vm_exit *vmexit;
1849fc276d92SJohn Baldwin
185080cb5d84SJohn Baldwin vmexit = vm_exitinfo(vcpu);
1851fc276d92SJohn Baldwin vmexit->rip = rip;
1852fc276d92SJohn Baldwin vmexit->inst_length = 0;
1853fc276d92SJohn Baldwin vmexit->exitcode = VM_EXITCODE_DEBUG;
1854fc276d92SJohn Baldwin }
1855fc276d92SJohn Baldwin
1856fc276d92SJohn Baldwin void
vm_exit_rendezvous(struct vcpu * vcpu,uint64_t rip)185780cb5d84SJohn Baldwin vm_exit_rendezvous(struct vcpu *vcpu, uint64_t rip)
185840487465SNeel Natu {
185940487465SNeel Natu struct vm_exit *vmexit;
186040487465SNeel Natu
186180cb5d84SJohn Baldwin vmexit = vm_exitinfo(vcpu);
186240487465SNeel Natu vmexit->rip = rip;
186340487465SNeel Natu vmexit->inst_length = 0;
186440487465SNeel Natu vmexit->exitcode = VM_EXITCODE_RENDEZVOUS;
186580cb5d84SJohn Baldwin vmm_stat_incr(vcpu, VMEXIT_RENDEZVOUS, 1);
186640487465SNeel Natu }
186740487465SNeel Natu
186840487465SNeel Natu void
vm_exit_reqidle(struct vcpu * vcpu,uint64_t rip)186980cb5d84SJohn Baldwin vm_exit_reqidle(struct vcpu *vcpu, uint64_t rip)
1870248e6799SNeel Natu {
1871248e6799SNeel Natu struct vm_exit *vmexit;
1872248e6799SNeel Natu
187380cb5d84SJohn Baldwin vmexit = vm_exitinfo(vcpu);
1874248e6799SNeel Natu vmexit->rip = rip;
1875248e6799SNeel Natu vmexit->inst_length = 0;
1876248e6799SNeel Natu vmexit->exitcode = VM_EXITCODE_REQIDLE;
187780cb5d84SJohn Baldwin vmm_stat_incr(vcpu, VMEXIT_REQIDLE, 1);
1878248e6799SNeel Natu }
1879248e6799SNeel Natu
1880248e6799SNeel Natu void
vm_exit_astpending(struct vcpu * vcpu,uint64_t rip)188180cb5d84SJohn Baldwin vm_exit_astpending(struct vcpu *vcpu, uint64_t rip)
188240487465SNeel Natu {
188340487465SNeel Natu struct vm_exit *vmexit;
188440487465SNeel Natu
188580cb5d84SJohn Baldwin vmexit = vm_exitinfo(vcpu);
188640487465SNeel Natu vmexit->rip = rip;
188740487465SNeel Natu vmexit->inst_length = 0;
188840487465SNeel Natu vmexit->exitcode = VM_EXITCODE_BOGUS;
188980cb5d84SJohn Baldwin vmm_stat_incr(vcpu, VMEXIT_ASTPENDING, 1);
189040487465SNeel Natu }
189140487465SNeel Natu
1892318224bbSNeel Natu int
vm_run(struct vcpu * vcpu)1893e17eca32SMark Johnston vm_run(struct vcpu *vcpu)
1894318224bbSNeel Natu {
18953f0f4b15SJohn Baldwin struct vm *vm = vcpu->vm;
1896248e6799SNeel Natu struct vm_eventinfo evinfo;
1897318224bbSNeel Natu int error, vcpuid;
1898318224bbSNeel Natu struct pcb *pcb;
1899d087a399SNeel Natu uint64_t tscval;
1900318224bbSNeel Natu struct vm_exit *vme;
1901becd9849SNeel Natu bool retu, intr_disabled;
1902318224bbSNeel Natu pmap_t pmap;
1903318224bbSNeel Natu
19043f0f4b15SJohn Baldwin vcpuid = vcpu->vcpuid;
1905318224bbSNeel Natu
190695ebc360SNeel Natu if (!CPU_ISSET(vcpuid, &vm->active_cpus))
190795ebc360SNeel Natu return (EINVAL);
190895ebc360SNeel Natu
190995ebc360SNeel Natu if (CPU_ISSET(vcpuid, &vm->suspended_cpus))
191095ebc360SNeel Natu return (EINVAL);
191195ebc360SNeel Natu
1912318224bbSNeel Natu pmap = vmspace_pmap(vm->vmspace);
1913318224bbSNeel Natu vme = &vcpu->exitinfo;
1914892feec2SCorvin Köhne evinfo.rptr = &vm->rendezvous_req_cpus;
1915248e6799SNeel Natu evinfo.sptr = &vm->suspend;
1916248e6799SNeel Natu evinfo.iptr = &vcpu->reqidle;
1917318224bbSNeel Natu restart:
1918318224bbSNeel Natu critical_enter();
1919318224bbSNeel Natu
1920318224bbSNeel Natu KASSERT(!CPU_ISSET(curcpu, &pmap->pm_active),
1921318224bbSNeel Natu ("vm_run: absurd pm_active"));
1922318224bbSNeel Natu
1923318224bbSNeel Natu tscval = rdtsc();
1924318224bbSNeel Natu
1925318224bbSNeel Natu pcb = PCPU_GET(curpcb);
1926318224bbSNeel Natu set_pcb_flags(pcb, PCB_FULL_IRET);
1927318224bbSNeel Natu
1928318224bbSNeel Natu restore_guest_fpustate(vcpu);
1929318224bbSNeel Natu
19303f0f4b15SJohn Baldwin vcpu_require_state(vcpu, VCPU_RUNNING);
1931869c8d19SJohn Baldwin error = vmmops_run(vcpu->cookie, vcpu->nextrip, pmap, &evinfo);
19323f0f4b15SJohn Baldwin vcpu_require_state(vcpu, VCPU_FROZEN);
1933318224bbSNeel Natu
1934318224bbSNeel Natu save_guest_fpustate(vcpu);
1935318224bbSNeel Natu
19363dc3d32aSJohn Baldwin vmm_stat_incr(vcpu, VCPU_TOTAL_RUNTIME, rdtsc() - tscval);
1937318224bbSNeel Natu
1938318224bbSNeel Natu critical_exit();
1939318224bbSNeel Natu
1940318224bbSNeel Natu if (error == 0) {
1941becd9849SNeel Natu retu = false;
1942d087a399SNeel Natu vcpu->nextrip = vme->rip + vme->inst_length;
1943318224bbSNeel Natu switch (vme->exitcode) {
1944248e6799SNeel Natu case VM_EXITCODE_REQIDLE:
19453f0f4b15SJohn Baldwin error = vm_handle_reqidle(vcpu, &retu);
1946248e6799SNeel Natu break;
1947b15a09c0SNeel Natu case VM_EXITCODE_SUSPENDED:
19483f0f4b15SJohn Baldwin error = vm_handle_suspend(vcpu, &retu);
1949b15a09c0SNeel Natu break;
195030b94db8SNeel Natu case VM_EXITCODE_IOAPIC_EOI:
1951e42c24d5SJohn Baldwin vioapic_process_eoi(vm, vme->u.ioapic_eoi.vector);
195230b94db8SNeel Natu break;
19535b8a8cd1SNeel Natu case VM_EXITCODE_RENDEZVOUS:
1954d8be3d52SJohn Baldwin error = vm_handle_rendezvous(vcpu);
19555b8a8cd1SNeel Natu break;
1956318224bbSNeel Natu case VM_EXITCODE_HLT:
1957becd9849SNeel Natu intr_disabled = ((vme->u.hlt.rflags & PSL_I) == 0);
19583f0f4b15SJohn Baldwin error = vm_handle_hlt(vcpu, intr_disabled, &retu);
1959318224bbSNeel Natu break;
1960318224bbSNeel Natu case VM_EXITCODE_PAGING:
19613f0f4b15SJohn Baldwin error = vm_handle_paging(vcpu, &retu);
1962318224bbSNeel Natu break;
1963318224bbSNeel Natu case VM_EXITCODE_INST_EMUL:
19643f0f4b15SJohn Baldwin error = vm_handle_inst_emul(vcpu, &retu);
1965318224bbSNeel Natu break;
1966d17b5104SNeel Natu case VM_EXITCODE_INOUT:
1967d17b5104SNeel Natu case VM_EXITCODE_INOUT_STR:
19683f0f4b15SJohn Baldwin error = vm_handle_inout(vcpu, vme, &retu);
1969d17b5104SNeel Natu break;
1970e3b4fe64SBojan Novković case VM_EXITCODE_DB:
1971e3b4fe64SBojan Novković error = vm_handle_db(vcpu, vme, &retu);
1972e3b4fe64SBojan Novković break;
197365145c7fSNeel Natu case VM_EXITCODE_MONITOR:
197465145c7fSNeel Natu case VM_EXITCODE_MWAIT:
197527d26457SAndrew Turner case VM_EXITCODE_VMINSN:
1976d3956e46SJohn Baldwin vm_inject_ud(vcpu);
197765145c7fSNeel Natu break;
1978318224bbSNeel Natu default:
1979becd9849SNeel Natu retu = true; /* handled in userland */
1980318224bbSNeel Natu break;
1981318224bbSNeel Natu }
1982318224bbSNeel Natu }
1983318224bbSNeel Natu
19840bda8d3eSCorvin Köhne /*
19850bda8d3eSCorvin Köhne * VM_EXITCODE_INST_EMUL could access the apic which could transform the
19860bda8d3eSCorvin Köhne * exit code into VM_EXITCODE_IPI.
19870bda8d3eSCorvin Köhne */
1988ba34de1bSMark Johnston if (error == 0 && vme->exitcode == VM_EXITCODE_IPI)
1989d8be3d52SJohn Baldwin error = vm_handle_ipi(vcpu, vme, &retu);
19900bda8d3eSCorvin Köhne
1991d087a399SNeel Natu if (error == 0 && retu == false)
1992f76fc5d4SNeel Natu goto restart;
1993f76fc5d4SNeel Natu
19943dc3d32aSJohn Baldwin vmm_stat_incr(vcpu, VMEXIT_USERSPACE, 1);
19953f0f4b15SJohn Baldwin VMM_CTR2(vcpu, "retu %d/%d", error, vme->exitcode);
1996248e6799SNeel Natu
1997366f6083SPeter Grehan return (error);
1998366f6083SPeter Grehan }
1999366f6083SPeter Grehan
2000366f6083SPeter Grehan int
vm_restart_instruction(struct vcpu * vcpu)2001d3956e46SJohn Baldwin vm_restart_instruction(struct vcpu *vcpu)
2002c9c75df4SNeel Natu {
2003d087a399SNeel Natu enum vcpu_state state;
2004d087a399SNeel Natu uint64_t rip;
200573505a10SRobert Wing int error __diagused;
2006c9c75df4SNeel Natu
2007d3956e46SJohn Baldwin state = vcpu_get_state(vcpu, NULL);
2008d087a399SNeel Natu if (state == VCPU_RUNNING) {
2009d087a399SNeel Natu /*
2010d087a399SNeel Natu * When a vcpu is "running" the next instruction is determined
2011d087a399SNeel Natu * by adding 'rip' and 'inst_length' in the vcpu's 'exitinfo'.
2012d087a399SNeel Natu * Thus setting 'inst_length' to zero will cause the current
2013d087a399SNeel Natu * instruction to be restarted.
2014d087a399SNeel Natu */
2015c9c75df4SNeel Natu vcpu->exitinfo.inst_length = 0;
2016d3956e46SJohn Baldwin VMM_CTR1(vcpu, "restarting instruction at %#lx by "
2017d087a399SNeel Natu "setting inst_length to zero", vcpu->exitinfo.rip);
2018d087a399SNeel Natu } else if (state == VCPU_FROZEN) {
2019d087a399SNeel Natu /*
2020d087a399SNeel Natu * When a vcpu is "frozen" it is outside the critical section
202115add60dSPeter Grehan * around vmmops_run() and 'nextrip' points to the next
202215add60dSPeter Grehan * instruction. Thus instruction restart is achieved by setting
202315add60dSPeter Grehan * 'nextrip' to the vcpu's %rip.
2024d087a399SNeel Natu */
2025d3956e46SJohn Baldwin error = vm_get_register(vcpu, VM_REG_GUEST_RIP, &rip);
2026d087a399SNeel Natu KASSERT(!error, ("%s: error %d getting rip", __func__, error));
2027d3956e46SJohn Baldwin VMM_CTR2(vcpu, "restarting instruction by updating "
2028d087a399SNeel Natu "nextrip from %#lx to %#lx", vcpu->nextrip, rip);
2029d087a399SNeel Natu vcpu->nextrip = rip;
2030d087a399SNeel Natu } else {
2031d087a399SNeel Natu panic("%s: invalid state %d", __func__, state);
2032d087a399SNeel Natu }
2033c9c75df4SNeel Natu return (0);
2034c9c75df4SNeel Natu }
2035c9c75df4SNeel Natu
2036c9c75df4SNeel Natu int
vm_exit_intinfo(struct vcpu * vcpu,uint64_t info)203780cb5d84SJohn Baldwin vm_exit_intinfo(struct vcpu *vcpu, uint64_t info)
2038091d4532SNeel Natu {
2039091d4532SNeel Natu int type, vector;
2040091d4532SNeel Natu
2041091d4532SNeel Natu if (info & VM_INTINFO_VALID) {
2042091d4532SNeel Natu type = info & VM_INTINFO_TYPE;
2043091d4532SNeel Natu vector = info & 0xff;
2044091d4532SNeel Natu if (type == VM_INTINFO_NMI && vector != IDT_NMI)
2045091d4532SNeel Natu return (EINVAL);
2046091d4532SNeel Natu if (type == VM_INTINFO_HWEXCEPTION && vector >= 32)
2047091d4532SNeel Natu return (EINVAL);
2048091d4532SNeel Natu if (info & VM_INTINFO_RSVD)
2049091d4532SNeel Natu return (EINVAL);
2050091d4532SNeel Natu } else {
2051091d4532SNeel Natu info = 0;
2052091d4532SNeel Natu }
205380cb5d84SJohn Baldwin VMM_CTR2(vcpu, "%s: info1(%#lx)", __func__, info);
2054091d4532SNeel Natu vcpu->exitintinfo = info;
2055091d4532SNeel Natu return (0);
2056091d4532SNeel Natu }
2057091d4532SNeel Natu
2058091d4532SNeel Natu enum exc_class {
2059091d4532SNeel Natu EXC_BENIGN,
2060091d4532SNeel Natu EXC_CONTRIBUTORY,
2061091d4532SNeel Natu EXC_PAGEFAULT
2062091d4532SNeel Natu };
2063091d4532SNeel Natu
2064091d4532SNeel Natu #define IDT_VE 20 /* Virtualization Exception (Intel specific) */
2065091d4532SNeel Natu
2066091d4532SNeel Natu static enum exc_class
exception_class(uint64_t info)2067091d4532SNeel Natu exception_class(uint64_t info)
2068091d4532SNeel Natu {
2069091d4532SNeel Natu int type, vector;
2070091d4532SNeel Natu
2071091d4532SNeel Natu KASSERT(info & VM_INTINFO_VALID, ("intinfo must be valid: %#lx", info));
2072091d4532SNeel Natu type = info & VM_INTINFO_TYPE;
2073091d4532SNeel Natu vector = info & 0xff;
2074091d4532SNeel Natu
2075091d4532SNeel Natu /* Table 6-4, "Interrupt and Exception Classes", Intel SDM, Vol 3 */
2076091d4532SNeel Natu switch (type) {
2077091d4532SNeel Natu case VM_INTINFO_HWINTR:
2078091d4532SNeel Natu case VM_INTINFO_SWINTR:
2079091d4532SNeel Natu case VM_INTINFO_NMI:
2080091d4532SNeel Natu return (EXC_BENIGN);
2081091d4532SNeel Natu default:
2082091d4532SNeel Natu /*
2083091d4532SNeel Natu * Hardware exception.
2084091d4532SNeel Natu *
2085091d4532SNeel Natu * SVM and VT-x use identical type values to represent NMI,
2086091d4532SNeel Natu * hardware interrupt and software interrupt.
2087091d4532SNeel Natu *
2088091d4532SNeel Natu * SVM uses type '3' for all exceptions. VT-x uses type '3'
2089091d4532SNeel Natu * for exceptions except #BP and #OF. #BP and #OF use a type
2090091d4532SNeel Natu * value of '5' or '6'. Therefore we don't check for explicit
2091091d4532SNeel Natu * values of 'type' to classify 'intinfo' into a hardware
2092091d4532SNeel Natu * exception.
2093091d4532SNeel Natu */
2094091d4532SNeel Natu break;
2095091d4532SNeel Natu }
2096091d4532SNeel Natu
2097091d4532SNeel Natu switch (vector) {
2098091d4532SNeel Natu case IDT_PF:
2099091d4532SNeel Natu case IDT_VE:
2100091d4532SNeel Natu return (EXC_PAGEFAULT);
2101091d4532SNeel Natu case IDT_DE:
2102091d4532SNeel Natu case IDT_TS:
2103091d4532SNeel Natu case IDT_NP:
2104091d4532SNeel Natu case IDT_SS:
2105091d4532SNeel Natu case IDT_GP:
2106091d4532SNeel Natu return (EXC_CONTRIBUTORY);
2107091d4532SNeel Natu default:
2108091d4532SNeel Natu return (EXC_BENIGN);
2109091d4532SNeel Natu }
2110091d4532SNeel Natu }
2111091d4532SNeel Natu
2112091d4532SNeel Natu static int
nested_fault(struct vcpu * vcpu,uint64_t info1,uint64_t info2,uint64_t * retinfo)211380cb5d84SJohn Baldwin nested_fault(struct vcpu *vcpu, uint64_t info1, uint64_t info2,
2114091d4532SNeel Natu uint64_t *retinfo)
2115091d4532SNeel Natu {
2116091d4532SNeel Natu enum exc_class exc1, exc2;
2117091d4532SNeel Natu int type1, vector1;
2118091d4532SNeel Natu
2119091d4532SNeel Natu KASSERT(info1 & VM_INTINFO_VALID, ("info1 %#lx is not valid", info1));
2120091d4532SNeel Natu KASSERT(info2 & VM_INTINFO_VALID, ("info2 %#lx is not valid", info2));
2121091d4532SNeel Natu
2122091d4532SNeel Natu /*
2123091d4532SNeel Natu * If an exception occurs while attempting to call the double-fault
2124091d4532SNeel Natu * handler the processor enters shutdown mode (aka triple fault).
2125091d4532SNeel Natu */
2126091d4532SNeel Natu type1 = info1 & VM_INTINFO_TYPE;
2127091d4532SNeel Natu vector1 = info1 & 0xff;
2128091d4532SNeel Natu if (type1 == VM_INTINFO_HWEXCEPTION && vector1 == IDT_DF) {
212980cb5d84SJohn Baldwin VMM_CTR2(vcpu, "triple fault: info1(%#lx), info2(%#lx)",
2130091d4532SNeel Natu info1, info2);
213180cb5d84SJohn Baldwin vm_suspend(vcpu->vm, VM_SUSPEND_TRIPLEFAULT);
2132091d4532SNeel Natu *retinfo = 0;
2133091d4532SNeel Natu return (0);
2134091d4532SNeel Natu }
2135091d4532SNeel Natu
2136091d4532SNeel Natu /*
2137091d4532SNeel Natu * Table 6-5 "Conditions for Generating a Double Fault", Intel SDM, Vol3
2138091d4532SNeel Natu */
2139091d4532SNeel Natu exc1 = exception_class(info1);
2140091d4532SNeel Natu exc2 = exception_class(info2);
2141091d4532SNeel Natu if ((exc1 == EXC_CONTRIBUTORY && exc2 == EXC_CONTRIBUTORY) ||
2142091d4532SNeel Natu (exc1 == EXC_PAGEFAULT && exc2 != EXC_BENIGN)) {
2143091d4532SNeel Natu /* Convert nested fault into a double fault. */
2144091d4532SNeel Natu *retinfo = IDT_DF;
2145091d4532SNeel Natu *retinfo |= VM_INTINFO_VALID | VM_INTINFO_HWEXCEPTION;
2146091d4532SNeel Natu *retinfo |= VM_INTINFO_DEL_ERRCODE;
2147091d4532SNeel Natu } else {
2148091d4532SNeel Natu /* Handle exceptions serially */
2149091d4532SNeel Natu *retinfo = info2;
2150091d4532SNeel Natu }
2151091d4532SNeel Natu return (1);
2152091d4532SNeel Natu }
2153091d4532SNeel Natu
2154091d4532SNeel Natu static uint64_t
vcpu_exception_intinfo(struct vcpu * vcpu)2155091d4532SNeel Natu vcpu_exception_intinfo(struct vcpu *vcpu)
2156091d4532SNeel Natu {
2157091d4532SNeel Natu uint64_t info = 0;
2158091d4532SNeel Natu
2159091d4532SNeel Natu if (vcpu->exception_pending) {
2160c9c75df4SNeel Natu info = vcpu->exc_vector & 0xff;
2161091d4532SNeel Natu info |= VM_INTINFO_VALID | VM_INTINFO_HWEXCEPTION;
2162c9c75df4SNeel Natu if (vcpu->exc_errcode_valid) {
2163091d4532SNeel Natu info |= VM_INTINFO_DEL_ERRCODE;
2164c9c75df4SNeel Natu info |= (uint64_t)vcpu->exc_errcode << 32;
2165091d4532SNeel Natu }
2166091d4532SNeel Natu }
2167091d4532SNeel Natu return (info);
2168091d4532SNeel Natu }
2169091d4532SNeel Natu
2170091d4532SNeel Natu int
vm_entry_intinfo(struct vcpu * vcpu,uint64_t * retinfo)217180cb5d84SJohn Baldwin vm_entry_intinfo(struct vcpu *vcpu, uint64_t *retinfo)
2172091d4532SNeel Natu {
2173091d4532SNeel Natu uint64_t info1, info2;
2174091d4532SNeel Natu int valid;
2175091d4532SNeel Natu
2176091d4532SNeel Natu info1 = vcpu->exitintinfo;
2177091d4532SNeel Natu vcpu->exitintinfo = 0;
2178091d4532SNeel Natu
2179091d4532SNeel Natu info2 = 0;
2180091d4532SNeel Natu if (vcpu->exception_pending) {
2181091d4532SNeel Natu info2 = vcpu_exception_intinfo(vcpu);
2182091d4532SNeel Natu vcpu->exception_pending = 0;
218380cb5d84SJohn Baldwin VMM_CTR2(vcpu, "Exception %d delivered: %#lx",
2184c9c75df4SNeel Natu vcpu->exc_vector, info2);
2185091d4532SNeel Natu }
2186091d4532SNeel Natu
2187091d4532SNeel Natu if ((info1 & VM_INTINFO_VALID) && (info2 & VM_INTINFO_VALID)) {
218880cb5d84SJohn Baldwin valid = nested_fault(vcpu, info1, info2, retinfo);
2189091d4532SNeel Natu } else if (info1 & VM_INTINFO_VALID) {
2190091d4532SNeel Natu *retinfo = info1;
2191091d4532SNeel Natu valid = 1;
2192091d4532SNeel Natu } else if (info2 & VM_INTINFO_VALID) {
2193091d4532SNeel Natu *retinfo = info2;
2194091d4532SNeel Natu valid = 1;
2195091d4532SNeel Natu } else {
2196091d4532SNeel Natu valid = 0;
2197091d4532SNeel Natu }
2198091d4532SNeel Natu
2199091d4532SNeel Natu if (valid) {
2200d3956e46SJohn Baldwin VMM_CTR4(vcpu, "%s: info1(%#lx), info2(%#lx), "
2201091d4532SNeel Natu "retinfo(%#lx)", __func__, info1, info2, *retinfo);
2202091d4532SNeel Natu }
2203091d4532SNeel Natu
2204091d4532SNeel Natu return (valid);
2205091d4532SNeel Natu }
2206091d4532SNeel Natu
2207091d4532SNeel Natu int
vm_get_intinfo(struct vcpu * vcpu,uint64_t * info1,uint64_t * info2)22083f0f4b15SJohn Baldwin vm_get_intinfo(struct vcpu *vcpu, uint64_t *info1, uint64_t *info2)
2209091d4532SNeel Natu {
2210091d4532SNeel Natu *info1 = vcpu->exitintinfo;
2211091d4532SNeel Natu *info2 = vcpu_exception_intinfo(vcpu);
2212091d4532SNeel Natu return (0);
2213091d4532SNeel Natu }
2214091d4532SNeel Natu
2215091d4532SNeel Natu int
vm_inject_exception(struct vcpu * vcpu,int vector,int errcode_valid,uint32_t errcode,int restart_instruction)2216d3956e46SJohn Baldwin vm_inject_exception(struct vcpu *vcpu, int vector, int errcode_valid,
2217c9c75df4SNeel Natu uint32_t errcode, int restart_instruction)
2218366f6083SPeter Grehan {
221947b9935dSNeel Natu uint64_t regval;
222073505a10SRobert Wing int error __diagused;
2221dc506506SNeel Natu
2222c9c75df4SNeel Natu if (vector < 0 || vector >= 32)
2223366f6083SPeter Grehan return (EINVAL);
2224366f6083SPeter Grehan
2225091d4532SNeel Natu /*
2226091d4532SNeel Natu * A double fault exception should never be injected directly into
2227091d4532SNeel Natu * the guest. It is a derived exception that results from specific
2228091d4532SNeel Natu * combinations of nested faults.
2229091d4532SNeel Natu */
2230c9c75df4SNeel Natu if (vector == IDT_DF)
2231091d4532SNeel Natu return (EINVAL);
2232091d4532SNeel Natu
2233dc506506SNeel Natu if (vcpu->exception_pending) {
2234d3956e46SJohn Baldwin VMM_CTR2(vcpu, "Unable to inject exception %d due to "
2235c9c75df4SNeel Natu "pending exception %d", vector, vcpu->exc_vector);
2236dc506506SNeel Natu return (EBUSY);
2237dc506506SNeel Natu }
2238dc506506SNeel Natu
223947b9935dSNeel Natu if (errcode_valid) {
224047b9935dSNeel Natu /*
224147b9935dSNeel Natu * Exceptions don't deliver an error code in real mode.
224247b9935dSNeel Natu */
2243d3956e46SJohn Baldwin error = vm_get_register(vcpu, VM_REG_GUEST_CR0, ®val);
224447b9935dSNeel Natu KASSERT(!error, ("%s: error %d getting CR0", __func__, error));
224547b9935dSNeel Natu if (!(regval & CR0_PE))
224647b9935dSNeel Natu errcode_valid = 0;
224747b9935dSNeel Natu }
224847b9935dSNeel Natu
22492ce12423SNeel Natu /*
22502ce12423SNeel Natu * From section 26.6.1 "Interruptibility State" in Intel SDM:
22512ce12423SNeel Natu *
22522ce12423SNeel Natu * Event blocking by "STI" or "MOV SS" is cleared after guest executes
22532ce12423SNeel Natu * one instruction or incurs an exception.
22542ce12423SNeel Natu */
2255d3956e46SJohn Baldwin error = vm_set_register(vcpu, VM_REG_GUEST_INTR_SHADOW, 0);
22562ce12423SNeel Natu KASSERT(error == 0, ("%s: error %d clearing interrupt shadow",
22572ce12423SNeel Natu __func__, error));
22582ce12423SNeel Natu
2259c9c75df4SNeel Natu if (restart_instruction)
2260d3956e46SJohn Baldwin vm_restart_instruction(vcpu);
2261c9c75df4SNeel Natu
2262dc506506SNeel Natu vcpu->exception_pending = 1;
2263c9c75df4SNeel Natu vcpu->exc_vector = vector;
2264c9c75df4SNeel Natu vcpu->exc_errcode = errcode;
2265c9c75df4SNeel Natu vcpu->exc_errcode_valid = errcode_valid;
2266d3956e46SJohn Baldwin VMM_CTR1(vcpu, "Exception %d pending", vector);
2267dc506506SNeel Natu return (0);
2268dc506506SNeel Natu }
2269dc506506SNeel Natu
2270d37f2adbSNeel Natu void
vm_inject_fault(struct vcpu * vcpu,int vector,int errcode_valid,int errcode)2271d3956e46SJohn Baldwin vm_inject_fault(struct vcpu *vcpu, int vector, int errcode_valid, int errcode)
2272dc506506SNeel Natu {
227373505a10SRobert Wing int error __diagused, restart_instruction;
2274dc506506SNeel Natu
2275c9c75df4SNeel Natu restart_instruction = 1;
2276d37f2adbSNeel Natu
2277d3956e46SJohn Baldwin error = vm_inject_exception(vcpu, vector, errcode_valid,
2278c9c75df4SNeel Natu errcode, restart_instruction);
2279dc506506SNeel Natu KASSERT(error == 0, ("vm_inject_exception error %d", error));
2280dc506506SNeel Natu }
2281dc506506SNeel Natu
2282dc506506SNeel Natu void
vm_inject_pf(struct vcpu * vcpu,int error_code,uint64_t cr2)2283d3956e46SJohn Baldwin vm_inject_pf(struct vcpu *vcpu, int error_code, uint64_t cr2)
2284fd949af6SNeel Natu {
228573505a10SRobert Wing int error __diagused;
228637a723a5SNeel Natu
2287d3956e46SJohn Baldwin VMM_CTR2(vcpu, "Injecting page fault: error_code %#x, cr2 %#lx",
228837a723a5SNeel Natu error_code, cr2);
228937a723a5SNeel Natu
2290d3956e46SJohn Baldwin error = vm_set_register(vcpu, VM_REG_GUEST_CR2, cr2);
229137a723a5SNeel Natu KASSERT(error == 0, ("vm_set_register(cr2) error %d", error));
2292fd949af6SNeel Natu
2293d3956e46SJohn Baldwin vm_inject_fault(vcpu, IDT_PF, 1, error_code);
2294366f6083SPeter Grehan }
2295366f6083SPeter Grehan
229661592433SNeel Natu static VMM_STAT(VCPU_NMI_COUNT, "number of NMIs delivered to vcpu");
2297366f6083SPeter Grehan
2298f352ff0cSNeel Natu int
vm_inject_nmi(struct vcpu * vcpu)22993f0f4b15SJohn Baldwin vm_inject_nmi(struct vcpu *vcpu)
2300f352ff0cSNeel Natu {
2301f352ff0cSNeel Natu
2302f352ff0cSNeel Natu vcpu->nmi_pending = 1;
23033f0f4b15SJohn Baldwin vcpu_notify_event(vcpu, false);
2304f352ff0cSNeel Natu return (0);
2305f352ff0cSNeel Natu }
2306f352ff0cSNeel Natu
2307f352ff0cSNeel Natu int
vm_nmi_pending(struct vcpu * vcpu)230880cb5d84SJohn Baldwin vm_nmi_pending(struct vcpu *vcpu)
2309f352ff0cSNeel Natu {
2310f352ff0cSNeel Natu return (vcpu->nmi_pending);
2311f352ff0cSNeel Natu }
2312f352ff0cSNeel Natu
2313f352ff0cSNeel Natu void
vm_nmi_clear(struct vcpu * vcpu)231480cb5d84SJohn Baldwin vm_nmi_clear(struct vcpu *vcpu)
2315f352ff0cSNeel Natu {
2316f352ff0cSNeel Natu if (vcpu->nmi_pending == 0)
2317f352ff0cSNeel Natu panic("vm_nmi_clear: inconsistent nmi_pending state");
2318f352ff0cSNeel Natu
2319f352ff0cSNeel Natu vcpu->nmi_pending = 0;
23203dc3d32aSJohn Baldwin vmm_stat_incr(vcpu, VCPU_NMI_COUNT, 1);
2321366f6083SPeter Grehan }
2322366f6083SPeter Grehan
23230775fbb4STycho Nightingale static VMM_STAT(VCPU_EXTINT_COUNT, "number of ExtINTs delivered to vcpu");
23240775fbb4STycho Nightingale
23250775fbb4STycho Nightingale int
vm_inject_extint(struct vcpu * vcpu)23263f0f4b15SJohn Baldwin vm_inject_extint(struct vcpu *vcpu)
23270775fbb4STycho Nightingale {
23280775fbb4STycho Nightingale
23290775fbb4STycho Nightingale vcpu->extint_pending = 1;
23303f0f4b15SJohn Baldwin vcpu_notify_event(vcpu, false);
23310775fbb4STycho Nightingale return (0);
23320775fbb4STycho Nightingale }
23330775fbb4STycho Nightingale
23340775fbb4STycho Nightingale int
vm_extint_pending(struct vcpu * vcpu)233580cb5d84SJohn Baldwin vm_extint_pending(struct vcpu *vcpu)
23360775fbb4STycho Nightingale {
23370775fbb4STycho Nightingale return (vcpu->extint_pending);
23380775fbb4STycho Nightingale }
23390775fbb4STycho Nightingale
23400775fbb4STycho Nightingale void
vm_extint_clear(struct vcpu * vcpu)234180cb5d84SJohn Baldwin vm_extint_clear(struct vcpu *vcpu)
23420775fbb4STycho Nightingale {
23430775fbb4STycho Nightingale if (vcpu->extint_pending == 0)
23440775fbb4STycho Nightingale panic("vm_extint_clear: inconsistent extint_pending state");
23450775fbb4STycho Nightingale
23460775fbb4STycho Nightingale vcpu->extint_pending = 0;
23473dc3d32aSJohn Baldwin vmm_stat_incr(vcpu, VCPU_EXTINT_COUNT, 1);
23480775fbb4STycho Nightingale }
23490775fbb4STycho Nightingale
2350366f6083SPeter Grehan int
vm_get_capability(struct vcpu * vcpu,int type,int * retval)23513f0f4b15SJohn Baldwin vm_get_capability(struct vcpu *vcpu, int type, int *retval)
2352366f6083SPeter Grehan {
2353366f6083SPeter Grehan if (type < 0 || type >= VM_CAP_MAX)
2354366f6083SPeter Grehan return (EINVAL);
2355366f6083SPeter Grehan
23563f0f4b15SJohn Baldwin return (vmmops_getcap(vcpu->cookie, type, retval));
2357366f6083SPeter Grehan }
2358366f6083SPeter Grehan
2359366f6083SPeter Grehan int
vm_set_capability(struct vcpu * vcpu,int type,int val)23603f0f4b15SJohn Baldwin vm_set_capability(struct vcpu *vcpu, int type, int val)
2361366f6083SPeter Grehan {
2362366f6083SPeter Grehan if (type < 0 || type >= VM_CAP_MAX)
2363366f6083SPeter Grehan return (EINVAL);
2364366f6083SPeter Grehan
23653f0f4b15SJohn Baldwin return (vmmops_setcap(vcpu->cookie, type, val));
2366366f6083SPeter Grehan }
2367366f6083SPeter Grehan
2368950af9ffSJohn Baldwin struct vm *
vcpu_vm(struct vcpu * vcpu)2369950af9ffSJohn Baldwin vcpu_vm(struct vcpu *vcpu)
2370950af9ffSJohn Baldwin {
2371950af9ffSJohn Baldwin return (vcpu->vm);
2372950af9ffSJohn Baldwin }
2373950af9ffSJohn Baldwin
2374950af9ffSJohn Baldwin int
vcpu_vcpuid(struct vcpu * vcpu)2375950af9ffSJohn Baldwin vcpu_vcpuid(struct vcpu *vcpu)
2376950af9ffSJohn Baldwin {
2377950af9ffSJohn Baldwin return (vcpu->vcpuid);
2378950af9ffSJohn Baldwin }
2379950af9ffSJohn Baldwin
2380950af9ffSJohn Baldwin struct vcpu *
vm_vcpu(struct vm * vm,int vcpuid)2381950af9ffSJohn Baldwin vm_vcpu(struct vm *vm, int vcpuid)
2382950af9ffSJohn Baldwin {
238398568a00SJohn Baldwin return (vm->vcpu[vcpuid]);
2384950af9ffSJohn Baldwin }
2385950af9ffSJohn Baldwin
2386366f6083SPeter Grehan struct vlapic *
vm_lapic(struct vcpu * vcpu)2387d3956e46SJohn Baldwin vm_lapic(struct vcpu *vcpu)
2388366f6083SPeter Grehan {
2389d3956e46SJohn Baldwin return (vcpu->vlapic);
2390366f6083SPeter Grehan }
2391366f6083SPeter Grehan
2392565bbb86SNeel Natu struct vioapic *
vm_ioapic(struct vm * vm)2393565bbb86SNeel Natu vm_ioapic(struct vm *vm)
2394565bbb86SNeel Natu {
2395565bbb86SNeel Natu
2396565bbb86SNeel Natu return (vm->vioapic);
2397565bbb86SNeel Natu }
2398565bbb86SNeel Natu
239908e3ff32SNeel Natu struct vhpet *
vm_hpet(struct vm * vm)240008e3ff32SNeel Natu vm_hpet(struct vm *vm)
240108e3ff32SNeel Natu {
240208e3ff32SNeel Natu
240308e3ff32SNeel Natu return (vm->vhpet);
240408e3ff32SNeel Natu }
240508e3ff32SNeel Natu
2406490d56c5SEd Maste bool
vmm_is_pptdev(int bus,int slot,int func)2407366f6083SPeter Grehan vmm_is_pptdev(int bus, int slot, int func)
2408366f6083SPeter Grehan {
2409490d56c5SEd Maste int b, f, i, n, s;
2410366f6083SPeter Grehan char *val, *cp, *cp2;
2411490d56c5SEd Maste bool found;
2412366f6083SPeter Grehan
2413366f6083SPeter Grehan /*
241407044a96SNeel Natu * XXX
241507044a96SNeel Natu * The length of an environment variable is limited to 128 bytes which
241607044a96SNeel Natu * puts an upper limit on the number of passthru devices that may be
241707044a96SNeel Natu * specified using a single environment variable.
241807044a96SNeel Natu *
241907044a96SNeel Natu * Work around this by scanning multiple environment variable
242007044a96SNeel Natu * names instead of a single one - yuck!
2421366f6083SPeter Grehan */
242207044a96SNeel Natu const char *names[] = { "pptdevs", "pptdevs2", "pptdevs3", NULL };
242307044a96SNeel Natu
242407044a96SNeel Natu /* set pptdevs="1/2/3 4/5/6 7/8/9 10/11/12" */
2425490d56c5SEd Maste found = false;
242607044a96SNeel Natu for (i = 0; names[i] != NULL && !found; i++) {
24272be111bfSDavide Italiano cp = val = kern_getenv(names[i]);
2428366f6083SPeter Grehan while (cp != NULL && *cp != '\0') {
2429366f6083SPeter Grehan if ((cp2 = strchr(cp, ' ')) != NULL)
2430366f6083SPeter Grehan *cp2 = '\0';
2431366f6083SPeter Grehan
2432366f6083SPeter Grehan n = sscanf(cp, "%d/%d/%d", &b, &s, &f);
2433366f6083SPeter Grehan if (n == 3 && bus == b && slot == s && func == f) {
2434490d56c5SEd Maste found = true;
2435366f6083SPeter Grehan break;
2436366f6083SPeter Grehan }
2437366f6083SPeter Grehan
2438366f6083SPeter Grehan if (cp2 != NULL)
2439366f6083SPeter Grehan *cp2++ = ' ';
2440366f6083SPeter Grehan
2441366f6083SPeter Grehan cp = cp2;
2442366f6083SPeter Grehan }
2443366f6083SPeter Grehan freeenv(val);
244407044a96SNeel Natu }
2445366f6083SPeter Grehan return (found);
2446366f6083SPeter Grehan }
2447366f6083SPeter Grehan
2448366f6083SPeter Grehan void *
vm_iommu_domain(struct vm * vm)2449366f6083SPeter Grehan vm_iommu_domain(struct vm *vm)
2450366f6083SPeter Grehan {
2451366f6083SPeter Grehan
2452366f6083SPeter Grehan return (vm->iommu);
2453366f6083SPeter Grehan }
2454366f6083SPeter Grehan
245575dd3366SNeel Natu int
vcpu_set_state(struct vcpu * vcpu,enum vcpu_state newstate,bool from_idle)24563f0f4b15SJohn Baldwin vcpu_set_state(struct vcpu *vcpu, enum vcpu_state newstate, bool from_idle)
2457366f6083SPeter Grehan {
245875dd3366SNeel Natu int error;
2459366f6083SPeter Grehan
246075dd3366SNeel Natu vcpu_lock(vcpu);
24613f0f4b15SJohn Baldwin error = vcpu_set_state_locked(vcpu, newstate, from_idle);
246275dd3366SNeel Natu vcpu_unlock(vcpu);
246375dd3366SNeel Natu
246475dd3366SNeel Natu return (error);
246575dd3366SNeel Natu }
246675dd3366SNeel Natu
246775dd3366SNeel Natu enum vcpu_state
vcpu_get_state(struct vcpu * vcpu,int * hostcpu)2468d3956e46SJohn Baldwin vcpu_get_state(struct vcpu *vcpu, int *hostcpu)
2469366f6083SPeter Grehan {
247075dd3366SNeel Natu enum vcpu_state state;
2471366f6083SPeter Grehan
247275dd3366SNeel Natu vcpu_lock(vcpu);
247375dd3366SNeel Natu state = vcpu->state;
2474d3c11f40SPeter Grehan if (hostcpu != NULL)
2475d3c11f40SPeter Grehan *hostcpu = vcpu->hostcpu;
247675dd3366SNeel Natu vcpu_unlock(vcpu);
2477366f6083SPeter Grehan
247875dd3366SNeel Natu return (state);
2479366f6083SPeter Grehan }
2480366f6083SPeter Grehan
248195ebc360SNeel Natu int
vm_activate_cpu(struct vcpu * vcpu)24823f0f4b15SJohn Baldwin vm_activate_cpu(struct vcpu *vcpu)
2483366f6083SPeter Grehan {
24843f0f4b15SJohn Baldwin struct vm *vm = vcpu->vm;
2485366f6083SPeter Grehan
24863f0f4b15SJohn Baldwin if (CPU_ISSET(vcpu->vcpuid, &vm->active_cpus))
248795ebc360SNeel Natu return (EBUSY);
248822d822c6SNeel Natu
24893f0f4b15SJohn Baldwin VMM_CTR0(vcpu, "activated");
24903f0f4b15SJohn Baldwin CPU_SET_ATOMIC(vcpu->vcpuid, &vm->active_cpus);
249195ebc360SNeel Natu return (0);
2492366f6083SPeter Grehan }
2493366f6083SPeter Grehan
2494fc276d92SJohn Baldwin int
vm_suspend_cpu(struct vm * vm,struct vcpu * vcpu)24953f0f4b15SJohn Baldwin vm_suspend_cpu(struct vm *vm, struct vcpu *vcpu)
2496fc276d92SJohn Baldwin {
24973f0f4b15SJohn Baldwin if (vcpu == NULL) {
2498fc276d92SJohn Baldwin vm->debug_cpus = vm->active_cpus;
24993f0f4b15SJohn Baldwin for (int i = 0; i < vm->maxcpus; i++) {
2500fc276d92SJohn Baldwin if (CPU_ISSET(i, &vm->active_cpus))
25013f0f4b15SJohn Baldwin vcpu_notify_event(vm_vcpu(vm, i), false);
2502fc276d92SJohn Baldwin }
2503fc276d92SJohn Baldwin } else {
25043f0f4b15SJohn Baldwin if (!CPU_ISSET(vcpu->vcpuid, &vm->active_cpus))
2505fc276d92SJohn Baldwin return (EINVAL);
2506fc276d92SJohn Baldwin
25073f0f4b15SJohn Baldwin CPU_SET_ATOMIC(vcpu->vcpuid, &vm->debug_cpus);
25083f0f4b15SJohn Baldwin vcpu_notify_event(vcpu, false);
2509fc276d92SJohn Baldwin }
2510fc276d92SJohn Baldwin return (0);
2511fc276d92SJohn Baldwin }
2512fc276d92SJohn Baldwin
2513fc276d92SJohn Baldwin int
vm_resume_cpu(struct vm * vm,struct vcpu * vcpu)25143f0f4b15SJohn Baldwin vm_resume_cpu(struct vm *vm, struct vcpu *vcpu)
2515fc276d92SJohn Baldwin {
2516fc276d92SJohn Baldwin
25173f0f4b15SJohn Baldwin if (vcpu == NULL) {
2518fc276d92SJohn Baldwin CPU_ZERO(&vm->debug_cpus);
2519fc276d92SJohn Baldwin } else {
25203f0f4b15SJohn Baldwin if (!CPU_ISSET(vcpu->vcpuid, &vm->debug_cpus))
2521fc276d92SJohn Baldwin return (EINVAL);
2522fc276d92SJohn Baldwin
25233f0f4b15SJohn Baldwin CPU_CLR_ATOMIC(vcpu->vcpuid, &vm->debug_cpus);
2524fc276d92SJohn Baldwin }
2525fc276d92SJohn Baldwin return (0);
2526fc276d92SJohn Baldwin }
2527fc276d92SJohn Baldwin
2528fc276d92SJohn Baldwin int
vcpu_debugged(struct vcpu * vcpu)252980cb5d84SJohn Baldwin vcpu_debugged(struct vcpu *vcpu)
2530fc276d92SJohn Baldwin {
2531fc276d92SJohn Baldwin
253280cb5d84SJohn Baldwin return (CPU_ISSET(vcpu->vcpuid, &vcpu->vm->debug_cpus));
2533fc276d92SJohn Baldwin }
2534fc276d92SJohn Baldwin
2535a5615c90SPeter Grehan cpuset_t
vm_active_cpus(struct vm * vm)2536366f6083SPeter Grehan vm_active_cpus(struct vm *vm)
2537366f6083SPeter Grehan {
2538366f6083SPeter Grehan
2539366f6083SPeter Grehan return (vm->active_cpus);
2540366f6083SPeter Grehan }
2541366f6083SPeter Grehan
254295ebc360SNeel Natu cpuset_t
vm_debug_cpus(struct vm * vm)2543fc276d92SJohn Baldwin vm_debug_cpus(struct vm *vm)
2544fc276d92SJohn Baldwin {
2545fc276d92SJohn Baldwin
2546fc276d92SJohn Baldwin return (vm->debug_cpus);
2547fc276d92SJohn Baldwin }
2548fc276d92SJohn Baldwin
2549fc276d92SJohn Baldwin cpuset_t
vm_suspended_cpus(struct vm * vm)255095ebc360SNeel Natu vm_suspended_cpus(struct vm *vm)
255195ebc360SNeel Natu {
255295ebc360SNeel Natu
255395ebc360SNeel Natu return (vm->suspended_cpus);
255495ebc360SNeel Natu }
255595ebc360SNeel Natu
2556c0f35dbfSJohn Baldwin /*
2557c0f35dbfSJohn Baldwin * Returns the subset of vCPUs in tostart that are awaiting startup.
2558c0f35dbfSJohn Baldwin * These vCPUs are also marked as no longer awaiting startup.
2559c0f35dbfSJohn Baldwin */
2560c0f35dbfSJohn Baldwin cpuset_t
vm_start_cpus(struct vm * vm,const cpuset_t * tostart)2561c0f35dbfSJohn Baldwin vm_start_cpus(struct vm *vm, const cpuset_t *tostart)
2562c0f35dbfSJohn Baldwin {
2563c0f35dbfSJohn Baldwin cpuset_t set;
2564c0f35dbfSJohn Baldwin
2565c0f35dbfSJohn Baldwin mtx_lock(&vm->rendezvous_mtx);
2566c0f35dbfSJohn Baldwin CPU_AND(&set, &vm->startup_cpus, tostart);
2567c0f35dbfSJohn Baldwin CPU_ANDNOT(&vm->startup_cpus, &vm->startup_cpus, &set);
2568c0f35dbfSJohn Baldwin mtx_unlock(&vm->rendezvous_mtx);
2569c0f35dbfSJohn Baldwin return (set);
2570c0f35dbfSJohn Baldwin }
2571c0f35dbfSJohn Baldwin
2572c0f35dbfSJohn Baldwin void
vm_await_start(struct vm * vm,const cpuset_t * waiting)2573c0f35dbfSJohn Baldwin vm_await_start(struct vm *vm, const cpuset_t *waiting)
2574c0f35dbfSJohn Baldwin {
2575c0f35dbfSJohn Baldwin mtx_lock(&vm->rendezvous_mtx);
2576c0f35dbfSJohn Baldwin CPU_OR(&vm->startup_cpus, &vm->startup_cpus, waiting);
2577c0f35dbfSJohn Baldwin mtx_unlock(&vm->rendezvous_mtx);
2578c0f35dbfSJohn Baldwin }
2579c0f35dbfSJohn Baldwin
2580366f6083SPeter Grehan void *
vcpu_stats(struct vcpu * vcpu)25813dc3d32aSJohn Baldwin vcpu_stats(struct vcpu *vcpu)
2582366f6083SPeter Grehan {
2583366f6083SPeter Grehan
25843dc3d32aSJohn Baldwin return (vcpu->stats);
2585366f6083SPeter Grehan }
2586e9027382SNeel Natu
2587e9027382SNeel Natu int
vm_get_x2apic_state(struct vcpu * vcpu,enum x2apic_state * state)25883f0f4b15SJohn Baldwin vm_get_x2apic_state(struct vcpu *vcpu, enum x2apic_state *state)
2589e9027382SNeel Natu {
25903f0f4b15SJohn Baldwin *state = vcpu->x2apic_state;
2591e9027382SNeel Natu
2592e9027382SNeel Natu return (0);
2593e9027382SNeel Natu }
2594e9027382SNeel Natu
2595e9027382SNeel Natu int
vm_set_x2apic_state(struct vcpu * vcpu,enum x2apic_state state)25963f0f4b15SJohn Baldwin vm_set_x2apic_state(struct vcpu *vcpu, enum x2apic_state state)
2597e9027382SNeel Natu {
25983f23d3caSNeel Natu if (state >= X2APIC_STATE_LAST)
2599e9027382SNeel Natu return (EINVAL);
2600e9027382SNeel Natu
2601d3956e46SJohn Baldwin vcpu->x2apic_state = state;
2602e9027382SNeel Natu
2603d3956e46SJohn Baldwin vlapic_set_x2apic_state(vcpu, state);
260473820fb0SNeel Natu
2605e9027382SNeel Natu return (0);
2606e9027382SNeel Natu }
260775dd3366SNeel Natu
260822821874SNeel Natu /*
260922821874SNeel Natu * This function is called to ensure that a vcpu "sees" a pending event
261022821874SNeel Natu * as soon as possible:
261122821874SNeel Natu * - If the vcpu thread is sleeping then it is woken up.
261222821874SNeel Natu * - If the vcpu is running on a different host_cpu then an IPI will be directed
261322821874SNeel Natu * to the host_cpu to cause the vcpu to trap into the hypervisor.
261422821874SNeel Natu */
2615248e6799SNeel Natu static void
vcpu_notify_event_locked(struct vcpu * vcpu,bool lapic_intr)2616248e6799SNeel Natu vcpu_notify_event_locked(struct vcpu *vcpu, bool lapic_intr)
261775dd3366SNeel Natu {
261875dd3366SNeel Natu int hostcpu;
261975dd3366SNeel Natu
262075dd3366SNeel Natu hostcpu = vcpu->hostcpu;
2621ef39d7e9SNeel Natu if (vcpu->state == VCPU_RUNNING) {
2622ef39d7e9SNeel Natu KASSERT(hostcpu != NOCPU, ("vcpu running on invalid hostcpu"));
2623de5ea6b6SNeel Natu if (hostcpu != curcpu) {
2624ef39d7e9SNeel Natu if (lapic_intr) {
2625add611fdSNeel Natu vlapic_post_intr(vcpu->vlapic, hostcpu,
2626add611fdSNeel Natu vmm_ipinum);
2627ef39d7e9SNeel Natu } else {
262875dd3366SNeel Natu ipi_cpu(hostcpu, vmm_ipinum);
262975dd3366SNeel Natu }
2630ef39d7e9SNeel Natu } else {
2631ef39d7e9SNeel Natu /*
2632ef39d7e9SNeel Natu * If the 'vcpu' is running on 'curcpu' then it must
2633ef39d7e9SNeel Natu * be sending a notification to itself (e.g. SELF_IPI).
2634ef39d7e9SNeel Natu * The pending event will be picked up when the vcpu
2635ef39d7e9SNeel Natu * transitions back to guest context.
2636ef39d7e9SNeel Natu */
2637ef39d7e9SNeel Natu }
2638ef39d7e9SNeel Natu } else {
2639ef39d7e9SNeel Natu KASSERT(hostcpu == NOCPU, ("vcpu state %d not consistent "
2640ef39d7e9SNeel Natu "with hostcpu %d", vcpu->state, hostcpu));
2641366f6083SPeter Grehan if (vcpu->state == VCPU_SLEEPING)
2642366f6083SPeter Grehan wakeup_one(vcpu);
2643366f6083SPeter Grehan }
2644248e6799SNeel Natu }
2645248e6799SNeel Natu
2646248e6799SNeel Natu void
vcpu_notify_event(struct vcpu * vcpu,bool lapic_intr)26473f0f4b15SJohn Baldwin vcpu_notify_event(struct vcpu *vcpu, bool lapic_intr)
2648248e6799SNeel Natu {
2649248e6799SNeel Natu vcpu_lock(vcpu);
2650248e6799SNeel Natu vcpu_notify_event_locked(vcpu, lapic_intr);
2651f76fc5d4SNeel Natu vcpu_unlock(vcpu);
2652f76fc5d4SNeel Natu }
2653318224bbSNeel Natu
2654318224bbSNeel Natu struct vmspace *
vm_get_vmspace(struct vm * vm)2655318224bbSNeel Natu vm_get_vmspace(struct vm *vm)
2656318224bbSNeel Natu {
2657318224bbSNeel Natu
2658318224bbSNeel Natu return (vm->vmspace);
2659318224bbSNeel Natu }
2660565bbb86SNeel Natu
2661565bbb86SNeel Natu int
vm_apicid2vcpuid(struct vm * vm,int apicid)2662565bbb86SNeel Natu vm_apicid2vcpuid(struct vm *vm, int apicid)
2663565bbb86SNeel Natu {
2664565bbb86SNeel Natu /*
2665565bbb86SNeel Natu * XXX apic id is assumed to be numerically identical to vcpu id
2666565bbb86SNeel Natu */
2667565bbb86SNeel Natu return (apicid);
2668565bbb86SNeel Natu }
26695b8a8cd1SNeel Natu
2670b837daddSKonstantin Belousov int
vm_smp_rendezvous(struct vcpu * vcpu,cpuset_t dest,vm_rendezvous_func_t func,void * arg)2671d8be3d52SJohn Baldwin vm_smp_rendezvous(struct vcpu *vcpu, cpuset_t dest,
26725b8a8cd1SNeel Natu vm_rendezvous_func_t func, void *arg)
26735b8a8cd1SNeel Natu {
2674d8be3d52SJohn Baldwin struct vm *vm = vcpu->vm;
2675b837daddSKonstantin Belousov int error, i;
2676970955e4SNeel Natu
26775b8a8cd1SNeel Natu /*
26785b8a8cd1SNeel Natu * Enforce that this function is called without any locks
26795b8a8cd1SNeel Natu */
26805b8a8cd1SNeel Natu WITNESS_WARN(WARN_PANIC, NULL, "vm_smp_rendezvous");
26815b8a8cd1SNeel Natu
26825b8a8cd1SNeel Natu restart:
26835b8a8cd1SNeel Natu mtx_lock(&vm->rendezvous_mtx);
26845b8a8cd1SNeel Natu if (vm->rendezvous_func != NULL) {
26855b8a8cd1SNeel Natu /*
26865b8a8cd1SNeel Natu * If a rendezvous is already in progress then we need to
26873f0f4b15SJohn Baldwin * call the rendezvous handler in case this 'vcpu' is one
26885b8a8cd1SNeel Natu * of the targets of the rendezvous.
26895b8a8cd1SNeel Natu */
2690d8be3d52SJohn Baldwin VMM_CTR0(vcpu, "Rendezvous already in progress");
26915b8a8cd1SNeel Natu mtx_unlock(&vm->rendezvous_mtx);
2692d8be3d52SJohn Baldwin error = vm_handle_rendezvous(vcpu);
2693b837daddSKonstantin Belousov if (error != 0)
2694b837daddSKonstantin Belousov return (error);
26955b8a8cd1SNeel Natu goto restart;
26965b8a8cd1SNeel Natu }
26975b8a8cd1SNeel Natu KASSERT(vm->rendezvous_func == NULL, ("vm_smp_rendezvous: previous "
26985b8a8cd1SNeel Natu "rendezvous is still in progress"));
26995b8a8cd1SNeel Natu
2700d8be3d52SJohn Baldwin VMM_CTR0(vcpu, "Initiating rendezvous");
27015b8a8cd1SNeel Natu vm->rendezvous_req_cpus = dest;
27025b8a8cd1SNeel Natu CPU_ZERO(&vm->rendezvous_done_cpus);
27035b8a8cd1SNeel Natu vm->rendezvous_arg = arg;
2704869dbab7SAndriy Gapon vm->rendezvous_func = func;
27055b8a8cd1SNeel Natu mtx_unlock(&vm->rendezvous_mtx);
27065b8a8cd1SNeel Natu
2707970955e4SNeel Natu /*
2708970955e4SNeel Natu * Wake up any sleeping vcpus and trigger a VM-exit in any running
2709970955e4SNeel Natu * vcpus so they handle the rendezvous as soon as possible.
2710970955e4SNeel Natu */
2711a488c9c9SRodney W. Grimes for (i = 0; i < vm->maxcpus; i++) {
2712970955e4SNeel Natu if (CPU_ISSET(i, &dest))
27133f0f4b15SJohn Baldwin vcpu_notify_event(vm_vcpu(vm, i), false);
2714970955e4SNeel Natu }
2715970955e4SNeel Natu
2716d8be3d52SJohn Baldwin return (vm_handle_rendezvous(vcpu));
27175b8a8cd1SNeel Natu }
2718762fd208STycho Nightingale
2719762fd208STycho Nightingale struct vatpic *
vm_atpic(struct vm * vm)2720762fd208STycho Nightingale vm_atpic(struct vm *vm)
2721762fd208STycho Nightingale {
2722762fd208STycho Nightingale return (vm->vatpic);
2723762fd208STycho Nightingale }
2724e883c9bbSTycho Nightingale
2725e883c9bbSTycho Nightingale struct vatpit *
vm_atpit(struct vm * vm)2726e883c9bbSTycho Nightingale vm_atpit(struct vm *vm)
2727e883c9bbSTycho Nightingale {
2728e883c9bbSTycho Nightingale return (vm->vatpit);
2729e883c9bbSTycho Nightingale }
2730d17b5104SNeel Natu
2731160ef77aSNeel Natu struct vpmtmr *
vm_pmtmr(struct vm * vm)2732160ef77aSNeel Natu vm_pmtmr(struct vm *vm)
2733160ef77aSNeel Natu {
2734160ef77aSNeel Natu
2735160ef77aSNeel Natu return (vm->vpmtmr);
2736160ef77aSNeel Natu }
2737160ef77aSNeel Natu
27380dafa5cdSNeel Natu struct vrtc *
vm_rtc(struct vm * vm)27390dafa5cdSNeel Natu vm_rtc(struct vm *vm)
27400dafa5cdSNeel Natu {
27410dafa5cdSNeel Natu
27420dafa5cdSNeel Natu return (vm->vrtc);
27430dafa5cdSNeel Natu }
27440dafa5cdSNeel Natu
2745d17b5104SNeel Natu enum vm_reg_name
vm_segment_name(int seg)2746d17b5104SNeel Natu vm_segment_name(int seg)
2747d17b5104SNeel Natu {
2748d17b5104SNeel Natu static enum vm_reg_name seg_names[] = {
2749d17b5104SNeel Natu VM_REG_GUEST_ES,
2750d17b5104SNeel Natu VM_REG_GUEST_CS,
2751d17b5104SNeel Natu VM_REG_GUEST_SS,
2752d17b5104SNeel Natu VM_REG_GUEST_DS,
2753d17b5104SNeel Natu VM_REG_GUEST_FS,
2754d17b5104SNeel Natu VM_REG_GUEST_GS
2755d17b5104SNeel Natu };
2756d17b5104SNeel Natu
2757d17b5104SNeel Natu KASSERT(seg >= 0 && seg < nitems(seg_names),
2758d17b5104SNeel Natu ("%s: invalid segment encoding %d", __func__, seg));
2759d17b5104SNeel Natu return (seg_names[seg]);
2760d17b5104SNeel Natu }
2761cf1d80d8SPeter Grehan
2762d665d229SNeel Natu void
vm_copy_teardown(struct vm_copyinfo * copyinfo,int num_copyinfo)27632b4fe856SJohn Baldwin vm_copy_teardown(struct vm_copyinfo *copyinfo, int num_copyinfo)
2764d665d229SNeel Natu {
2765d665d229SNeel Natu int idx;
2766d665d229SNeel Natu
2767d665d229SNeel Natu for (idx = 0; idx < num_copyinfo; idx++) {
2768d665d229SNeel Natu if (copyinfo[idx].cookie != NULL)
2769d665d229SNeel Natu vm_gpa_release(copyinfo[idx].cookie);
2770d665d229SNeel Natu }
2771d665d229SNeel Natu bzero(copyinfo, num_copyinfo * sizeof(struct vm_copyinfo));
2772d665d229SNeel Natu }
2773d665d229SNeel Natu
2774d665d229SNeel Natu int
vm_copy_setup(struct vcpu * vcpu,struct vm_guest_paging * paging,uint64_t gla,size_t len,int prot,struct vm_copyinfo * copyinfo,int num_copyinfo,int * fault)2775d3956e46SJohn Baldwin vm_copy_setup(struct vcpu *vcpu, struct vm_guest_paging *paging,
2776d665d229SNeel Natu uint64_t gla, size_t len, int prot, struct vm_copyinfo *copyinfo,
27779c4d5478SNeel Natu int num_copyinfo, int *fault)
2778d665d229SNeel Natu {
2779d665d229SNeel Natu int error, idx, nused;
2780d665d229SNeel Natu size_t n, off, remaining;
2781d665d229SNeel Natu void *hva, *cookie;
2782d665d229SNeel Natu uint64_t gpa;
2783d665d229SNeel Natu
2784d665d229SNeel Natu bzero(copyinfo, sizeof(struct vm_copyinfo) * num_copyinfo);
2785d665d229SNeel Natu
2786d665d229SNeel Natu nused = 0;
2787d665d229SNeel Natu remaining = len;
2788d665d229SNeel Natu while (remaining > 0) {
2789d665d229SNeel Natu KASSERT(nused < num_copyinfo, ("insufficient vm_copyinfo"));
2790d3956e46SJohn Baldwin error = vm_gla2gpa(vcpu, paging, gla, prot, &gpa, fault);
27919c4d5478SNeel Natu if (error || *fault)
2792d665d229SNeel Natu return (error);
2793d665d229SNeel Natu off = gpa & PAGE_MASK;
2794d665d229SNeel Natu n = min(remaining, PAGE_SIZE - off);
2795d665d229SNeel Natu copyinfo[nused].gpa = gpa;
2796d665d229SNeel Natu copyinfo[nused].len = n;
2797d665d229SNeel Natu remaining -= n;
2798d665d229SNeel Natu gla += n;
2799d665d229SNeel Natu nused++;
2800d665d229SNeel Natu }
2801d665d229SNeel Natu
2802d665d229SNeel Natu for (idx = 0; idx < nused; idx++) {
2803d3956e46SJohn Baldwin hva = vm_gpa_hold(vcpu, copyinfo[idx].gpa,
28049b1aa8d6SNeel Natu copyinfo[idx].len, prot, &cookie);
2805d665d229SNeel Natu if (hva == NULL)
2806d665d229SNeel Natu break;
2807d665d229SNeel Natu copyinfo[idx].hva = hva;
2808d665d229SNeel Natu copyinfo[idx].cookie = cookie;
2809d665d229SNeel Natu }
2810d665d229SNeel Natu
2811d665d229SNeel Natu if (idx != nused) {
28122b4fe856SJohn Baldwin vm_copy_teardown(copyinfo, num_copyinfo);
28139c4d5478SNeel Natu return (EFAULT);
2814d665d229SNeel Natu } else {
28159c4d5478SNeel Natu *fault = 0;
2816d665d229SNeel Natu return (0);
2817d665d229SNeel Natu }
2818d665d229SNeel Natu }
2819d665d229SNeel Natu
2820d665d229SNeel Natu void
vm_copyin(struct vm_copyinfo * copyinfo,void * kaddr,size_t len)28212b4fe856SJohn Baldwin vm_copyin(struct vm_copyinfo *copyinfo, void *kaddr, size_t len)
2822d665d229SNeel Natu {
2823d665d229SNeel Natu char *dst;
2824d665d229SNeel Natu int idx;
2825d665d229SNeel Natu
2826d665d229SNeel Natu dst = kaddr;
2827d665d229SNeel Natu idx = 0;
2828d665d229SNeel Natu while (len > 0) {
2829d665d229SNeel Natu bcopy(copyinfo[idx].hva, dst, copyinfo[idx].len);
2830d665d229SNeel Natu len -= copyinfo[idx].len;
2831d665d229SNeel Natu dst += copyinfo[idx].len;
2832d665d229SNeel Natu idx++;
2833d665d229SNeel Natu }
2834d665d229SNeel Natu }
2835d665d229SNeel Natu
2836d665d229SNeel Natu void
vm_copyout(const void * kaddr,struct vm_copyinfo * copyinfo,size_t len)28372b4fe856SJohn Baldwin vm_copyout(const void *kaddr, struct vm_copyinfo *copyinfo, size_t len)
2838d665d229SNeel Natu {
2839d665d229SNeel Natu const char *src;
2840d665d229SNeel Natu int idx;
2841d665d229SNeel Natu
2842d665d229SNeel Natu src = kaddr;
2843d665d229SNeel Natu idx = 0;
2844d665d229SNeel Natu while (len > 0) {
2845d665d229SNeel Natu bcopy(src, copyinfo[idx].hva, copyinfo[idx].len);
2846d665d229SNeel Natu len -= copyinfo[idx].len;
2847d665d229SNeel Natu src += copyinfo[idx].len;
2848d665d229SNeel Natu idx++;
2849d665d229SNeel Natu }
2850d665d229SNeel Natu }
2851cf1d80d8SPeter Grehan
2852cf1d80d8SPeter Grehan /*
2853cf1d80d8SPeter Grehan * Return the amount of in-use and wired memory for the VM. Since
2854cf1d80d8SPeter Grehan * these are global stats, only return the values with for vCPU 0
2855cf1d80d8SPeter Grehan */
2856cf1d80d8SPeter Grehan VMM_STAT_DECLARE(VMM_MEM_RESIDENT);
2857cf1d80d8SPeter Grehan VMM_STAT_DECLARE(VMM_MEM_WIRED);
2858cf1d80d8SPeter Grehan
2859cf1d80d8SPeter Grehan static void
vm_get_rescnt(struct vcpu * vcpu,struct vmm_stat_type * stat)28603f0f4b15SJohn Baldwin vm_get_rescnt(struct vcpu *vcpu, struct vmm_stat_type *stat)
2861cf1d80d8SPeter Grehan {
2862cf1d80d8SPeter Grehan
28633f0f4b15SJohn Baldwin if (vcpu->vcpuid == 0) {
28643f0f4b15SJohn Baldwin vmm_stat_set(vcpu, VMM_MEM_RESIDENT, PAGE_SIZE *
28653f0f4b15SJohn Baldwin vmspace_resident_count(vcpu->vm->vmspace));
2866cf1d80d8SPeter Grehan }
2867cf1d80d8SPeter Grehan }
2868cf1d80d8SPeter Grehan
2869cf1d80d8SPeter Grehan static void
vm_get_wiredcnt(struct vcpu * vcpu,struct vmm_stat_type * stat)28703f0f4b15SJohn Baldwin vm_get_wiredcnt(struct vcpu *vcpu, struct vmm_stat_type *stat)
2871cf1d80d8SPeter Grehan {
2872cf1d80d8SPeter Grehan
28733f0f4b15SJohn Baldwin if (vcpu->vcpuid == 0) {
28743f0f4b15SJohn Baldwin vmm_stat_set(vcpu, VMM_MEM_WIRED, PAGE_SIZE *
28753f0f4b15SJohn Baldwin pmap_wired_count(vmspace_pmap(vcpu->vm->vmspace)));
2876cf1d80d8SPeter Grehan }
2877cf1d80d8SPeter Grehan }
2878cf1d80d8SPeter Grehan
2879cf1d80d8SPeter Grehan VMM_STAT_FUNC(VMM_MEM_RESIDENT, "Resident memory", vm_get_rescnt);
2880cf1d80d8SPeter Grehan VMM_STAT_FUNC(VMM_MEM_WIRED, "Wired memory", vm_get_wiredcnt);
2881483d953aSJohn Baldwin
2882483d953aSJohn Baldwin #ifdef BHYVE_SNAPSHOT
2883483d953aSJohn Baldwin static int
vm_snapshot_vcpus(struct vm * vm,struct vm_snapshot_meta * meta)2884483d953aSJohn Baldwin vm_snapshot_vcpus(struct vm *vm, struct vm_snapshot_meta *meta)
2885483d953aSJohn Baldwin {
2886a7db532eSJohn Baldwin uint64_t tsc, now;
2887483d953aSJohn Baldwin int ret;
2888483d953aSJohn Baldwin struct vcpu *vcpu;
288935abc6c2SJohn Baldwin uint16_t i, maxcpus;
2890483d953aSJohn Baldwin
2891a7db532eSJohn Baldwin now = rdtsc();
289235abc6c2SJohn Baldwin maxcpus = vm_get_maxcpus(vm);
289335abc6c2SJohn Baldwin for (i = 0; i < maxcpus; i++) {
289498568a00SJohn Baldwin vcpu = vm->vcpu[i];
289598568a00SJohn Baldwin if (vcpu == NULL)
289698568a00SJohn Baldwin continue;
2897483d953aSJohn Baldwin
2898483d953aSJohn Baldwin SNAPSHOT_VAR_OR_LEAVE(vcpu->x2apic_state, meta, ret, done);
2899483d953aSJohn Baldwin SNAPSHOT_VAR_OR_LEAVE(vcpu->exitintinfo, meta, ret, done);
2900483d953aSJohn Baldwin SNAPSHOT_VAR_OR_LEAVE(vcpu->exc_vector, meta, ret, done);
2901483d953aSJohn Baldwin SNAPSHOT_VAR_OR_LEAVE(vcpu->exc_errcode_valid, meta, ret, done);
2902483d953aSJohn Baldwin SNAPSHOT_VAR_OR_LEAVE(vcpu->exc_errcode, meta, ret, done);
2903483d953aSJohn Baldwin SNAPSHOT_VAR_OR_LEAVE(vcpu->guest_xcr0, meta, ret, done);
2904483d953aSJohn Baldwin SNAPSHOT_VAR_OR_LEAVE(vcpu->exitinfo, meta, ret, done);
2905483d953aSJohn Baldwin SNAPSHOT_VAR_OR_LEAVE(vcpu->nextrip, meta, ret, done);
2906a7db532eSJohn Baldwin
2907a7db532eSJohn Baldwin /*
2908a7db532eSJohn Baldwin * Save the absolute TSC value by adding now to tsc_offset.
2909483d953aSJohn Baldwin *
2910483d953aSJohn Baldwin * It will be turned turned back into an actual offset when the
2911483d953aSJohn Baldwin * TSC restore function is called
2912483d953aSJohn Baldwin */
2913a7db532eSJohn Baldwin tsc = now + vcpu->tsc_offset;
2914a7db532eSJohn Baldwin SNAPSHOT_VAR_OR_LEAVE(tsc, meta, ret, done);
2915281b496fSVitaliy Gusev if (meta->op == VM_SNAPSHOT_RESTORE)
2916281b496fSVitaliy Gusev vcpu->tsc_offset = tsc;
2917483d953aSJohn Baldwin }
2918483d953aSJohn Baldwin
2919483d953aSJohn Baldwin done:
2920483d953aSJohn Baldwin return (ret);
2921483d953aSJohn Baldwin }
2922483d953aSJohn Baldwin
2923483d953aSJohn Baldwin static int
vm_snapshot_vm(struct vm * vm,struct vm_snapshot_meta * meta)2924483d953aSJohn Baldwin vm_snapshot_vm(struct vm *vm, struct vm_snapshot_meta *meta)
2925483d953aSJohn Baldwin {
2926483d953aSJohn Baldwin int ret;
2927483d953aSJohn Baldwin
2928483d953aSJohn Baldwin ret = vm_snapshot_vcpus(vm, meta);
2929a7db532eSJohn Baldwin if (ret != 0)
2930483d953aSJohn Baldwin goto done;
2931483d953aSJohn Baldwin
2932c0f35dbfSJohn Baldwin SNAPSHOT_VAR_OR_LEAVE(vm->startup_cpus, meta, ret, done);
2933483d953aSJohn Baldwin done:
2934483d953aSJohn Baldwin return (ret);
2935483d953aSJohn Baldwin }
2936483d953aSJohn Baldwin
2937483d953aSJohn Baldwin static int
vm_snapshot_vcpu(struct vm * vm,struct vm_snapshot_meta * meta)29381aa51504SJohn Baldwin vm_snapshot_vcpu(struct vm *vm, struct vm_snapshot_meta *meta)
2939483d953aSJohn Baldwin {
294035abc6c2SJohn Baldwin int error;
29411aa51504SJohn Baldwin struct vcpu *vcpu;
294235abc6c2SJohn Baldwin uint16_t i, maxcpus;
2943483d953aSJohn Baldwin
2944483d953aSJohn Baldwin error = 0;
2945483d953aSJohn Baldwin
294635abc6c2SJohn Baldwin maxcpus = vm_get_maxcpus(vm);
294735abc6c2SJohn Baldwin for (i = 0; i < maxcpus; i++) {
294898568a00SJohn Baldwin vcpu = vm->vcpu[i];
294998568a00SJohn Baldwin if (vcpu == NULL)
295098568a00SJohn Baldwin continue;
29511aa51504SJohn Baldwin
2952869c8d19SJohn Baldwin error = vmmops_vcpu_snapshot(vcpu->cookie, meta);
2953483d953aSJohn Baldwin if (error != 0) {
2954483d953aSJohn Baldwin printf("%s: failed to snapshot vmcs/vmcb data for "
2955483d953aSJohn Baldwin "vCPU: %d; error: %d\n", __func__, i, error);
2956483d953aSJohn Baldwin goto done;
2957483d953aSJohn Baldwin }
2958483d953aSJohn Baldwin }
2959483d953aSJohn Baldwin
2960483d953aSJohn Baldwin done:
2961483d953aSJohn Baldwin return (error);
2962483d953aSJohn Baldwin }
2963483d953aSJohn Baldwin
2964483d953aSJohn Baldwin /*
2965483d953aSJohn Baldwin * Save kernel-side structures to user-space for snapshotting.
2966483d953aSJohn Baldwin */
2967483d953aSJohn Baldwin int
vm_snapshot_req(struct vm * vm,struct vm_snapshot_meta * meta)2968483d953aSJohn Baldwin vm_snapshot_req(struct vm *vm, struct vm_snapshot_meta *meta)
2969483d953aSJohn Baldwin {
2970483d953aSJohn Baldwin int ret = 0;
2971483d953aSJohn Baldwin
2972483d953aSJohn Baldwin switch (meta->dev_req) {
2973483d953aSJohn Baldwin case STRUCT_VMCX:
29741aa51504SJohn Baldwin ret = vm_snapshot_vcpu(vm, meta);
2975483d953aSJohn Baldwin break;
2976483d953aSJohn Baldwin case STRUCT_VM:
2977483d953aSJohn Baldwin ret = vm_snapshot_vm(vm, meta);
2978483d953aSJohn Baldwin break;
2979483d953aSJohn Baldwin case STRUCT_VIOAPIC:
2980483d953aSJohn Baldwin ret = vioapic_snapshot(vm_ioapic(vm), meta);
2981483d953aSJohn Baldwin break;
2982483d953aSJohn Baldwin case STRUCT_VLAPIC:
2983483d953aSJohn Baldwin ret = vlapic_snapshot(vm, meta);
2984483d953aSJohn Baldwin break;
2985483d953aSJohn Baldwin case STRUCT_VHPET:
2986483d953aSJohn Baldwin ret = vhpet_snapshot(vm_hpet(vm), meta);
2987483d953aSJohn Baldwin break;
2988483d953aSJohn Baldwin case STRUCT_VATPIC:
2989483d953aSJohn Baldwin ret = vatpic_snapshot(vm_atpic(vm), meta);
2990483d953aSJohn Baldwin break;
2991483d953aSJohn Baldwin case STRUCT_VATPIT:
2992483d953aSJohn Baldwin ret = vatpit_snapshot(vm_atpit(vm), meta);
2993483d953aSJohn Baldwin break;
2994483d953aSJohn Baldwin case STRUCT_VPMTMR:
2995483d953aSJohn Baldwin ret = vpmtmr_snapshot(vm_pmtmr(vm), meta);
2996483d953aSJohn Baldwin break;
2997483d953aSJohn Baldwin case STRUCT_VRTC:
2998483d953aSJohn Baldwin ret = vrtc_snapshot(vm_rtc(vm), meta);
2999483d953aSJohn Baldwin break;
3000483d953aSJohn Baldwin default:
3001483d953aSJohn Baldwin printf("%s: failed to find the requested type %#x\n",
3002483d953aSJohn Baldwin __func__, meta->dev_req);
3003483d953aSJohn Baldwin ret = (EINVAL);
3004483d953aSJohn Baldwin }
3005483d953aSJohn Baldwin return (ret);
3006483d953aSJohn Baldwin }
3007483d953aSJohn Baldwin
300880cb5d84SJohn Baldwin void
vm_set_tsc_offset(struct vcpu * vcpu,uint64_t offset)300980cb5d84SJohn Baldwin vm_set_tsc_offset(struct vcpu *vcpu, uint64_t offset)
3010483d953aSJohn Baldwin {
3011483d953aSJohn Baldwin vcpu->tsc_offset = offset;
3012483d953aSJohn Baldwin }
3013483d953aSJohn Baldwin
3014483d953aSJohn Baldwin int
vm_restore_time(struct vm * vm)3015483d953aSJohn Baldwin vm_restore_time(struct vm *vm)
3016483d953aSJohn Baldwin {
301735abc6c2SJohn Baldwin int error;
3018483d953aSJohn Baldwin uint64_t now;
3019483d953aSJohn Baldwin struct vcpu *vcpu;
302035abc6c2SJohn Baldwin uint16_t i, maxcpus;
3021483d953aSJohn Baldwin
3022483d953aSJohn Baldwin now = rdtsc();
3023483d953aSJohn Baldwin
3024483d953aSJohn Baldwin error = vhpet_restore_time(vm_hpet(vm));
3025483d953aSJohn Baldwin if (error)
3026483d953aSJohn Baldwin return (error);
3027483d953aSJohn Baldwin
302835abc6c2SJohn Baldwin maxcpus = vm_get_maxcpus(vm);
302935abc6c2SJohn Baldwin for (i = 0; i < maxcpus; i++) {
303098568a00SJohn Baldwin vcpu = vm->vcpu[i];
303198568a00SJohn Baldwin if (vcpu == NULL)
303298568a00SJohn Baldwin continue;
3033483d953aSJohn Baldwin
3034869c8d19SJohn Baldwin error = vmmops_restore_tsc(vcpu->cookie,
30351aa51504SJohn Baldwin vcpu->tsc_offset - now);
3036483d953aSJohn Baldwin if (error)
3037483d953aSJohn Baldwin return (error);
3038483d953aSJohn Baldwin }
3039483d953aSJohn Baldwin
3040483d953aSJohn Baldwin return (0);
3041483d953aSJohn Baldwin }
3042483d953aSJohn Baldwin #endif
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