2 * Kernel-based Virtual Machine driver for Linux
4 * derived from drivers/kvm/kvm_main.c
6 * Copyright (C) 2006 Qumranet, Inc.
7 * Copyright (C) 2008 Qumranet, Inc.
8 * Copyright IBM Corporation, 2008
11 * Avi Kivity <avi@qumranet.com>
12 * Yaniv Kamay <yaniv@qumranet.com>
13 * Amit Shah <amit.shah@qumranet.com>
14 * Ben-Ami Yassour <benami@il.ibm.com>
16 * This work is licensed under the terms of the GNU GPL, version 2. See
17 * the COPYING file in the top-level directory.
21 #include <linux/kvm_host.h>
26 #include "kvm_cache_regs.h"
29 #include <linux/clocksource.h>
30 #include <linux/interrupt.h>
31 #include <linux/kvm.h>
33 #include <linux/vmalloc.h>
34 #include <linux/module.h>
35 #include <linux/mman.h>
36 #include <linux/highmem.h>
37 #include <linux/iommu.h>
38 #include <linux/intel-iommu.h>
39 #include <linux/cpufreq.h>
40 #include <linux/user-return-notifier.h>
41 #include <linux/srcu.h>
42 #include <linux/slab.h>
43 #include <linux/perf_event.h>
44 #include <trace/events/kvm.h>
46 #define CREATE_TRACE_POINTS
49 #include <asm/debugreg.h>
50 #include <asm/uaccess.h>
56 #define MAX_IO_MSRS 256
57 #define CR0_RESERVED_BITS \
58 (~(unsigned long)(X86_CR0_PE | X86_CR0_MP | X86_CR0_EM | X86_CR0_TS \
59 | X86_CR0_ET | X86_CR0_NE | X86_CR0_WP | X86_CR0_AM \
60 | X86_CR0_NW | X86_CR0_CD | X86_CR0_PG))
61 #define CR4_RESERVED_BITS \
62 (~(unsigned long)(X86_CR4_VME | X86_CR4_PVI | X86_CR4_TSD | X86_CR4_DE\
63 | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_MCE \
64 | X86_CR4_PGE | X86_CR4_PCE | X86_CR4_OSFXSR \
65 | X86_CR4_OSXMMEXCPT | X86_CR4_VMXE))
67 #define CR8_RESERVED_BITS (~(unsigned long)X86_CR8_TPR)
69 #define KVM_MAX_MCE_BANKS 32
70 #define KVM_MCE_CAP_SUPPORTED MCG_CTL_P
73 * - enable syscall per default because its emulated by KVM
74 * - enable LME and LMA per default on 64 bit KVM
77 static u64 __read_mostly efer_reserved_bits
= 0xfffffffffffffafeULL
;
79 static u64 __read_mostly efer_reserved_bits
= 0xfffffffffffffffeULL
;
82 #define VM_STAT(x) offsetof(struct kvm, stat.x), KVM_STAT_VM
83 #define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU
85 static void update_cr8_intercept(struct kvm_vcpu
*vcpu
);
86 static int kvm_dev_ioctl_get_supported_cpuid(struct kvm_cpuid2
*cpuid
,
87 struct kvm_cpuid_entry2 __user
*entries
);
89 struct kvm_x86_ops
*kvm_x86_ops
;
90 EXPORT_SYMBOL_GPL(kvm_x86_ops
);
93 module_param_named(ignore_msrs
, ignore_msrs
, bool, S_IRUGO
| S_IWUSR
);
95 #define KVM_NR_SHARED_MSRS 16
97 struct kvm_shared_msrs_global
{
99 u32 msrs
[KVM_NR_SHARED_MSRS
];
102 struct kvm_shared_msrs
{
103 struct user_return_notifier urn
;
105 struct kvm_shared_msr_values
{
108 } values
[KVM_NR_SHARED_MSRS
];
111 static struct kvm_shared_msrs_global __read_mostly shared_msrs_global
;
112 static DEFINE_PER_CPU(struct kvm_shared_msrs
, shared_msrs
);
114 struct kvm_stats_debugfs_item debugfs_entries
[] = {
115 { "pf_fixed", VCPU_STAT(pf_fixed
) },
116 { "pf_guest", VCPU_STAT(pf_guest
) },
117 { "tlb_flush", VCPU_STAT(tlb_flush
) },
118 { "invlpg", VCPU_STAT(invlpg
) },
119 { "exits", VCPU_STAT(exits
) },
120 { "io_exits", VCPU_STAT(io_exits
) },
121 { "mmio_exits", VCPU_STAT(mmio_exits
) },
122 { "signal_exits", VCPU_STAT(signal_exits
) },
123 { "irq_window", VCPU_STAT(irq_window_exits
) },
124 { "nmi_window", VCPU_STAT(nmi_window_exits
) },
125 { "halt_exits", VCPU_STAT(halt_exits
) },
126 { "halt_wakeup", VCPU_STAT(halt_wakeup
) },
127 { "hypercalls", VCPU_STAT(hypercalls
) },
128 { "request_irq", VCPU_STAT(request_irq_exits
) },
129 { "irq_exits", VCPU_STAT(irq_exits
) },
130 { "host_state_reload", VCPU_STAT(host_state_reload
) },
131 { "efer_reload", VCPU_STAT(efer_reload
) },
132 { "fpu_reload", VCPU_STAT(fpu_reload
) },
133 { "insn_emulation", VCPU_STAT(insn_emulation
) },
134 { "insn_emulation_fail", VCPU_STAT(insn_emulation_fail
) },
135 { "irq_injections", VCPU_STAT(irq_injections
) },
136 { "nmi_injections", VCPU_STAT(nmi_injections
) },
137 { "mmu_shadow_zapped", VM_STAT(mmu_shadow_zapped
) },
138 { "mmu_pte_write", VM_STAT(mmu_pte_write
) },
139 { "mmu_pte_updated", VM_STAT(mmu_pte_updated
) },
140 { "mmu_pde_zapped", VM_STAT(mmu_pde_zapped
) },
141 { "mmu_flooded", VM_STAT(mmu_flooded
) },
142 { "mmu_recycled", VM_STAT(mmu_recycled
) },
143 { "mmu_cache_miss", VM_STAT(mmu_cache_miss
) },
144 { "mmu_unsync", VM_STAT(mmu_unsync
) },
145 { "remote_tlb_flush", VM_STAT(remote_tlb_flush
) },
146 { "largepages", VM_STAT(lpages
) },
150 static void kvm_on_user_return(struct user_return_notifier
*urn
)
153 struct kvm_shared_msrs
*locals
154 = container_of(urn
, struct kvm_shared_msrs
, urn
);
155 struct kvm_shared_msr_values
*values
;
157 for (slot
= 0; slot
< shared_msrs_global
.nr
; ++slot
) {
158 values
= &locals
->values
[slot
];
159 if (values
->host
!= values
->curr
) {
160 wrmsrl(shared_msrs_global
.msrs
[slot
], values
->host
);
161 values
->curr
= values
->host
;
164 locals
->registered
= false;
165 user_return_notifier_unregister(urn
);
168 static void shared_msr_update(unsigned slot
, u32 msr
)
170 struct kvm_shared_msrs
*smsr
;
173 smsr
= &__get_cpu_var(shared_msrs
);
174 /* only read, and nobody should modify it at this time,
175 * so don't need lock */
176 if (slot
>= shared_msrs_global
.nr
) {
177 printk(KERN_ERR
"kvm: invalid MSR slot!");
180 rdmsrl_safe(msr
, &value
);
181 smsr
->values
[slot
].host
= value
;
182 smsr
->values
[slot
].curr
= value
;
185 void kvm_define_shared_msr(unsigned slot
, u32 msr
)
187 if (slot
>= shared_msrs_global
.nr
)
188 shared_msrs_global
.nr
= slot
+ 1;
189 shared_msrs_global
.msrs
[slot
] = msr
;
190 /* we need ensured the shared_msr_global have been updated */
193 EXPORT_SYMBOL_GPL(kvm_define_shared_msr
);
195 static void kvm_shared_msr_cpu_online(void)
199 for (i
= 0; i
< shared_msrs_global
.nr
; ++i
)
200 shared_msr_update(i
, shared_msrs_global
.msrs
[i
]);
203 void kvm_set_shared_msr(unsigned slot
, u64 value
, u64 mask
)
205 struct kvm_shared_msrs
*smsr
= &__get_cpu_var(shared_msrs
);
207 if (((value
^ smsr
->values
[slot
].curr
) & mask
) == 0)
209 smsr
->values
[slot
].curr
= value
;
210 wrmsrl(shared_msrs_global
.msrs
[slot
], value
);
211 if (!smsr
->registered
) {
212 smsr
->urn
.on_user_return
= kvm_on_user_return
;
213 user_return_notifier_register(&smsr
->urn
);
214 smsr
->registered
= true;
217 EXPORT_SYMBOL_GPL(kvm_set_shared_msr
);
219 static void drop_user_return_notifiers(void *ignore
)
221 struct kvm_shared_msrs
*smsr
= &__get_cpu_var(shared_msrs
);
223 if (smsr
->registered
)
224 kvm_on_user_return(&smsr
->urn
);
227 u64
kvm_get_apic_base(struct kvm_vcpu
*vcpu
)
229 if (irqchip_in_kernel(vcpu
->kvm
))
230 return vcpu
->arch
.apic_base
;
232 return vcpu
->arch
.apic_base
;
234 EXPORT_SYMBOL_GPL(kvm_get_apic_base
);
236 void kvm_set_apic_base(struct kvm_vcpu
*vcpu
, u64 data
)
238 /* TODO: reserve bits check */
239 if (irqchip_in_kernel(vcpu
->kvm
))
240 kvm_lapic_set_base(vcpu
, data
);
242 vcpu
->arch
.apic_base
= data
;
244 EXPORT_SYMBOL_GPL(kvm_set_apic_base
);
246 #define EXCPT_BENIGN 0
247 #define EXCPT_CONTRIBUTORY 1
250 static int exception_class(int vector
)
260 return EXCPT_CONTRIBUTORY
;
267 static void kvm_multiple_exception(struct kvm_vcpu
*vcpu
,
268 unsigned nr
, bool has_error
, u32 error_code
,
274 if (!vcpu
->arch
.exception
.pending
) {
276 vcpu
->arch
.exception
.pending
= true;
277 vcpu
->arch
.exception
.has_error_code
= has_error
;
278 vcpu
->arch
.exception
.nr
= nr
;
279 vcpu
->arch
.exception
.error_code
= error_code
;
280 vcpu
->arch
.exception
.reinject
= reinject
;
284 /* to check exception */
285 prev_nr
= vcpu
->arch
.exception
.nr
;
286 if (prev_nr
== DF_VECTOR
) {
287 /* triple fault -> shutdown */
288 set_bit(KVM_REQ_TRIPLE_FAULT
, &vcpu
->requests
);
291 class1
= exception_class(prev_nr
);
292 class2
= exception_class(nr
);
293 if ((class1
== EXCPT_CONTRIBUTORY
&& class2
== EXCPT_CONTRIBUTORY
)
294 || (class1
== EXCPT_PF
&& class2
!= EXCPT_BENIGN
)) {
295 /* generate double fault per SDM Table 5-5 */
296 vcpu
->arch
.exception
.pending
= true;
297 vcpu
->arch
.exception
.has_error_code
= true;
298 vcpu
->arch
.exception
.nr
= DF_VECTOR
;
299 vcpu
->arch
.exception
.error_code
= 0;
301 /* replace previous exception with a new one in a hope
302 that instruction re-execution will regenerate lost
307 void kvm_queue_exception(struct kvm_vcpu
*vcpu
, unsigned nr
)
309 kvm_multiple_exception(vcpu
, nr
, false, 0, false);
311 EXPORT_SYMBOL_GPL(kvm_queue_exception
);
313 void kvm_requeue_exception(struct kvm_vcpu
*vcpu
, unsigned nr
)
315 kvm_multiple_exception(vcpu
, nr
, false, 0, true);
317 EXPORT_SYMBOL_GPL(kvm_requeue_exception
);
319 void kvm_inject_page_fault(struct kvm_vcpu
*vcpu
, unsigned long addr
,
322 ++vcpu
->stat
.pf_guest
;
323 vcpu
->arch
.cr2
= addr
;
324 kvm_queue_exception_e(vcpu
, PF_VECTOR
, error_code
);
327 void kvm_inject_nmi(struct kvm_vcpu
*vcpu
)
329 vcpu
->arch
.nmi_pending
= 1;
331 EXPORT_SYMBOL_GPL(kvm_inject_nmi
);
333 void kvm_queue_exception_e(struct kvm_vcpu
*vcpu
, unsigned nr
, u32 error_code
)
335 kvm_multiple_exception(vcpu
, nr
, true, error_code
, false);
337 EXPORT_SYMBOL_GPL(kvm_queue_exception_e
);
339 void kvm_requeue_exception_e(struct kvm_vcpu
*vcpu
, unsigned nr
, u32 error_code
)
341 kvm_multiple_exception(vcpu
, nr
, true, error_code
, true);
343 EXPORT_SYMBOL_GPL(kvm_requeue_exception_e
);
346 * Checks if cpl <= required_cpl; if true, return true. Otherwise queue
347 * a #GP and return false.
349 bool kvm_require_cpl(struct kvm_vcpu
*vcpu
, int required_cpl
)
351 if (kvm_x86_ops
->get_cpl(vcpu
) <= required_cpl
)
353 kvm_queue_exception_e(vcpu
, GP_VECTOR
, 0);
356 EXPORT_SYMBOL_GPL(kvm_require_cpl
);
359 * Load the pae pdptrs. Return true is they are all valid.
361 int load_pdptrs(struct kvm_vcpu
*vcpu
, unsigned long cr3
)
363 gfn_t pdpt_gfn
= cr3
>> PAGE_SHIFT
;
364 unsigned offset
= ((cr3
& (PAGE_SIZE
-1)) >> 5) << 2;
367 u64 pdpte
[ARRAY_SIZE(vcpu
->arch
.pdptrs
)];
369 ret
= kvm_read_guest_page(vcpu
->kvm
, pdpt_gfn
, pdpte
,
370 offset
* sizeof(u64
), sizeof(pdpte
));
375 for (i
= 0; i
< ARRAY_SIZE(pdpte
); ++i
) {
376 if (is_present_gpte(pdpte
[i
]) &&
377 (pdpte
[i
] & vcpu
->arch
.mmu
.rsvd_bits_mask
[0][2])) {
384 memcpy(vcpu
->arch
.pdptrs
, pdpte
, sizeof(vcpu
->arch
.pdptrs
));
385 __set_bit(VCPU_EXREG_PDPTR
,
386 (unsigned long *)&vcpu
->arch
.regs_avail
);
387 __set_bit(VCPU_EXREG_PDPTR
,
388 (unsigned long *)&vcpu
->arch
.regs_dirty
);
393 EXPORT_SYMBOL_GPL(load_pdptrs
);
395 static bool pdptrs_changed(struct kvm_vcpu
*vcpu
)
397 u64 pdpte
[ARRAY_SIZE(vcpu
->arch
.pdptrs
)];
401 if (is_long_mode(vcpu
) || !is_pae(vcpu
))
404 if (!test_bit(VCPU_EXREG_PDPTR
,
405 (unsigned long *)&vcpu
->arch
.regs_avail
))
408 r
= kvm_read_guest(vcpu
->kvm
, vcpu
->arch
.cr3
& ~31u, pdpte
, sizeof(pdpte
));
411 changed
= memcmp(pdpte
, vcpu
->arch
.pdptrs
, sizeof(pdpte
)) != 0;
417 void kvm_set_cr0(struct kvm_vcpu
*vcpu
, unsigned long cr0
)
422 if (cr0
& 0xffffffff00000000UL
) {
423 kvm_inject_gp(vcpu
, 0);
428 cr0
&= ~CR0_RESERVED_BITS
;
430 if ((cr0
& X86_CR0_NW
) && !(cr0
& X86_CR0_CD
)) {
431 kvm_inject_gp(vcpu
, 0);
435 if ((cr0
& X86_CR0_PG
) && !(cr0
& X86_CR0_PE
)) {
436 kvm_inject_gp(vcpu
, 0);
440 if (!is_paging(vcpu
) && (cr0
& X86_CR0_PG
)) {
442 if ((vcpu
->arch
.efer
& EFER_LME
)) {
446 kvm_inject_gp(vcpu
, 0);
449 kvm_x86_ops
->get_cs_db_l_bits(vcpu
, &cs_db
, &cs_l
);
451 kvm_inject_gp(vcpu
, 0);
457 if (is_pae(vcpu
) && !load_pdptrs(vcpu
, vcpu
->arch
.cr3
)) {
458 kvm_inject_gp(vcpu
, 0);
464 kvm_x86_ops
->set_cr0(vcpu
, cr0
);
466 kvm_mmu_reset_context(vcpu
);
469 EXPORT_SYMBOL_GPL(kvm_set_cr0
);
471 void kvm_lmsw(struct kvm_vcpu
*vcpu
, unsigned long msw
)
473 kvm_set_cr0(vcpu
, kvm_read_cr0_bits(vcpu
, ~0x0eul
) | (msw
& 0x0f));
475 EXPORT_SYMBOL_GPL(kvm_lmsw
);
477 void kvm_set_cr4(struct kvm_vcpu
*vcpu
, unsigned long cr4
)
479 unsigned long old_cr4
= kvm_read_cr4(vcpu
);
480 unsigned long pdptr_bits
= X86_CR4_PGE
| X86_CR4_PSE
| X86_CR4_PAE
;
482 if (cr4
& CR4_RESERVED_BITS
) {
483 kvm_inject_gp(vcpu
, 0);
487 if (is_long_mode(vcpu
)) {
488 if (!(cr4
& X86_CR4_PAE
)) {
489 kvm_inject_gp(vcpu
, 0);
492 } else if (is_paging(vcpu
) && (cr4
& X86_CR4_PAE
)
493 && ((cr4
^ old_cr4
) & pdptr_bits
)
494 && !load_pdptrs(vcpu
, vcpu
->arch
.cr3
)) {
495 kvm_inject_gp(vcpu
, 0);
499 if (cr4
& X86_CR4_VMXE
) {
500 kvm_inject_gp(vcpu
, 0);
503 kvm_x86_ops
->set_cr4(vcpu
, cr4
);
504 vcpu
->arch
.cr4
= cr4
;
505 kvm_mmu_reset_context(vcpu
);
507 EXPORT_SYMBOL_GPL(kvm_set_cr4
);
509 void kvm_set_cr3(struct kvm_vcpu
*vcpu
, unsigned long cr3
)
511 if (cr3
== vcpu
->arch
.cr3
&& !pdptrs_changed(vcpu
)) {
512 kvm_mmu_sync_roots(vcpu
);
513 kvm_mmu_flush_tlb(vcpu
);
517 if (is_long_mode(vcpu
)) {
518 if (cr3
& CR3_L_MODE_RESERVED_BITS
) {
519 kvm_inject_gp(vcpu
, 0);
524 if (cr3
& CR3_PAE_RESERVED_BITS
) {
525 kvm_inject_gp(vcpu
, 0);
528 if (is_paging(vcpu
) && !load_pdptrs(vcpu
, cr3
)) {
529 kvm_inject_gp(vcpu
, 0);
534 * We don't check reserved bits in nonpae mode, because
535 * this isn't enforced, and VMware depends on this.
540 * Does the new cr3 value map to physical memory? (Note, we
541 * catch an invalid cr3 even in real-mode, because it would
542 * cause trouble later on when we turn on paging anyway.)
544 * A real CPU would silently accept an invalid cr3 and would
545 * attempt to use it - with largely undefined (and often hard
546 * to debug) behavior on the guest side.
548 if (unlikely(!gfn_to_memslot(vcpu
->kvm
, cr3
>> PAGE_SHIFT
)))
549 kvm_inject_gp(vcpu
, 0);
551 vcpu
->arch
.cr3
= cr3
;
552 vcpu
->arch
.mmu
.new_cr3(vcpu
);
555 EXPORT_SYMBOL_GPL(kvm_set_cr3
);
557 void kvm_set_cr8(struct kvm_vcpu
*vcpu
, unsigned long cr8
)
559 if (cr8
& CR8_RESERVED_BITS
) {
560 kvm_inject_gp(vcpu
, 0);
563 if (irqchip_in_kernel(vcpu
->kvm
))
564 kvm_lapic_set_tpr(vcpu
, cr8
);
566 vcpu
->arch
.cr8
= cr8
;
568 EXPORT_SYMBOL_GPL(kvm_set_cr8
);
570 unsigned long kvm_get_cr8(struct kvm_vcpu
*vcpu
)
572 if (irqchip_in_kernel(vcpu
->kvm
))
573 return kvm_lapic_get_cr8(vcpu
);
575 return vcpu
->arch
.cr8
;
577 EXPORT_SYMBOL_GPL(kvm_get_cr8
);
579 int kvm_set_dr(struct kvm_vcpu
*vcpu
, int dr
, unsigned long val
)
583 vcpu
->arch
.db
[dr
] = val
;
584 if (!(vcpu
->guest_debug
& KVM_GUESTDBG_USE_HW_BP
))
585 vcpu
->arch
.eff_db
[dr
] = val
;
588 if (kvm_read_cr4_bits(vcpu
, X86_CR4_DE
)) {
589 kvm_queue_exception(vcpu
, UD_VECTOR
);
594 if (val
& 0xffffffff00000000ULL
) {
595 kvm_inject_gp(vcpu
, 0);
598 vcpu
->arch
.dr6
= (val
& DR6_VOLATILE
) | DR6_FIXED_1
;
601 if (kvm_read_cr4_bits(vcpu
, X86_CR4_DE
)) {
602 kvm_queue_exception(vcpu
, UD_VECTOR
);
607 if (val
& 0xffffffff00000000ULL
) {
608 kvm_inject_gp(vcpu
, 0);
611 vcpu
->arch
.dr7
= (val
& DR7_VOLATILE
) | DR7_FIXED_1
;
612 if (!(vcpu
->guest_debug
& KVM_GUESTDBG_USE_HW_BP
)) {
613 kvm_x86_ops
->set_dr7(vcpu
, vcpu
->arch
.dr7
);
614 vcpu
->arch
.switch_db_regs
= (val
& DR7_BP_EN_MASK
);
621 EXPORT_SYMBOL_GPL(kvm_set_dr
);
623 int kvm_get_dr(struct kvm_vcpu
*vcpu
, int dr
, unsigned long *val
)
627 *val
= vcpu
->arch
.db
[dr
];
630 if (kvm_read_cr4_bits(vcpu
, X86_CR4_DE
)) {
631 kvm_queue_exception(vcpu
, UD_VECTOR
);
636 *val
= vcpu
->arch
.dr6
;
639 if (kvm_read_cr4_bits(vcpu
, X86_CR4_DE
)) {
640 kvm_queue_exception(vcpu
, UD_VECTOR
);
645 *val
= vcpu
->arch
.dr7
;
651 EXPORT_SYMBOL_GPL(kvm_get_dr
);
653 static inline u32
bit(int bitno
)
655 return 1 << (bitno
& 31);
659 * List of msr numbers which we expose to userspace through KVM_GET_MSRS
660 * and KVM_SET_MSRS, and KVM_GET_MSR_INDEX_LIST.
662 * This list is modified at module load time to reflect the
663 * capabilities of the host cpu. This capabilities test skips MSRs that are
664 * kvm-specific. Those are put in the beginning of the list.
667 #define KVM_SAVE_MSRS_BEGIN 7
668 static u32 msrs_to_save
[] = {
669 MSR_KVM_SYSTEM_TIME
, MSR_KVM_WALL_CLOCK
,
670 MSR_KVM_SYSTEM_TIME_NEW
, MSR_KVM_WALL_CLOCK_NEW
,
671 HV_X64_MSR_GUEST_OS_ID
, HV_X64_MSR_HYPERCALL
,
672 HV_X64_MSR_APIC_ASSIST_PAGE
,
673 MSR_IA32_SYSENTER_CS
, MSR_IA32_SYSENTER_ESP
, MSR_IA32_SYSENTER_EIP
,
676 MSR_CSTAR
, MSR_KERNEL_GS_BASE
, MSR_SYSCALL_MASK
, MSR_LSTAR
,
678 MSR_IA32_TSC
, MSR_IA32_PERF_STATUS
, MSR_IA32_CR_PAT
, MSR_VM_HSAVE_PA
681 static unsigned num_msrs_to_save
;
683 static u32 emulated_msrs
[] = {
684 MSR_IA32_MISC_ENABLE
,
687 static int set_efer(struct kvm_vcpu
*vcpu
, u64 efer
)
689 if (efer
& efer_reserved_bits
)
693 && (vcpu
->arch
.efer
& EFER_LME
) != (efer
& EFER_LME
))
696 if (efer
& EFER_FFXSR
) {
697 struct kvm_cpuid_entry2
*feat
;
699 feat
= kvm_find_cpuid_entry(vcpu
, 0x80000001, 0);
700 if (!feat
|| !(feat
->edx
& bit(X86_FEATURE_FXSR_OPT
)))
704 if (efer
& EFER_SVME
) {
705 struct kvm_cpuid_entry2
*feat
;
707 feat
= kvm_find_cpuid_entry(vcpu
, 0x80000001, 0);
708 if (!feat
|| !(feat
->ecx
& bit(X86_FEATURE_SVM
)))
713 efer
|= vcpu
->arch
.efer
& EFER_LMA
;
715 kvm_x86_ops
->set_efer(vcpu
, efer
);
717 vcpu
->arch
.efer
= efer
;
719 vcpu
->arch
.mmu
.base_role
.nxe
= (efer
& EFER_NX
) && !tdp_enabled
;
720 kvm_mmu_reset_context(vcpu
);
725 void kvm_enable_efer_bits(u64 mask
)
727 efer_reserved_bits
&= ~mask
;
729 EXPORT_SYMBOL_GPL(kvm_enable_efer_bits
);
733 * Writes msr value into into the appropriate "register".
734 * Returns 0 on success, non-0 otherwise.
735 * Assumes vcpu_load() was already called.
737 int kvm_set_msr(struct kvm_vcpu
*vcpu
, u32 msr_index
, u64 data
)
739 return kvm_x86_ops
->set_msr(vcpu
, msr_index
, data
);
743 * Adapt set_msr() to msr_io()'s calling convention
745 static int do_set_msr(struct kvm_vcpu
*vcpu
, unsigned index
, u64
*data
)
747 return kvm_set_msr(vcpu
, index
, *data
);
750 static void kvm_write_wall_clock(struct kvm
*kvm
, gpa_t wall_clock
)
754 struct pvclock_wall_clock wc
;
755 struct timespec boot
;
760 r
= kvm_read_guest(kvm
, wall_clock
, &version
, sizeof(version
));
765 ++version
; /* first time write, random junk */
769 kvm_write_guest(kvm
, wall_clock
, &version
, sizeof(version
));
772 * The guest calculates current wall clock time by adding
773 * system time (updated by kvm_write_guest_time below) to the
774 * wall clock specified here. guest system time equals host
775 * system time for us, thus we must fill in host boot time here.
779 wc
.sec
= boot
.tv_sec
;
780 wc
.nsec
= boot
.tv_nsec
;
781 wc
.version
= version
;
783 kvm_write_guest(kvm
, wall_clock
, &wc
, sizeof(wc
));
786 kvm_write_guest(kvm
, wall_clock
, &version
, sizeof(version
));
789 static uint32_t div_frac(uint32_t dividend
, uint32_t divisor
)
791 uint32_t quotient
, remainder
;
793 /* Don't try to replace with do_div(), this one calculates
794 * "(dividend << 32) / divisor" */
796 : "=a" (quotient
), "=d" (remainder
)
797 : "0" (0), "1" (dividend
), "r" (divisor
) );
801 static void kvm_set_time_scale(uint32_t tsc_khz
, struct pvclock_vcpu_time_info
*hv_clock
)
803 uint64_t nsecs
= 1000000000LL;
808 tps64
= tsc_khz
* 1000LL;
809 while (tps64
> nsecs
*2) {
814 tps32
= (uint32_t)tps64
;
815 while (tps32
<= (uint32_t)nsecs
) {
820 hv_clock
->tsc_shift
= shift
;
821 hv_clock
->tsc_to_system_mul
= div_frac(nsecs
, tps32
);
823 pr_debug("%s: tsc_khz %u, tsc_shift %d, tsc_mul %u\n",
824 __func__
, tsc_khz
, hv_clock
->tsc_shift
,
825 hv_clock
->tsc_to_system_mul
);
828 static DEFINE_PER_CPU(unsigned long, cpu_tsc_khz
);
830 static void kvm_write_guest_time(struct kvm_vcpu
*v
)
834 struct kvm_vcpu_arch
*vcpu
= &v
->arch
;
836 unsigned long this_tsc_khz
;
838 if ((!vcpu
->time_page
))
841 this_tsc_khz
= get_cpu_var(cpu_tsc_khz
);
842 if (unlikely(vcpu
->hv_clock_tsc_khz
!= this_tsc_khz
)) {
843 kvm_set_time_scale(this_tsc_khz
, &vcpu
->hv_clock
);
844 vcpu
->hv_clock_tsc_khz
= this_tsc_khz
;
846 put_cpu_var(cpu_tsc_khz
);
848 /* Keep irq disabled to prevent changes to the clock */
849 local_irq_save(flags
);
850 kvm_get_msr(v
, MSR_IA32_TSC
, &vcpu
->hv_clock
.tsc_timestamp
);
852 monotonic_to_bootbased(&ts
);
853 local_irq_restore(flags
);
855 /* With all the info we got, fill in the values */
857 vcpu
->hv_clock
.system_time
= ts
.tv_nsec
+
858 (NSEC_PER_SEC
* (u64
)ts
.tv_sec
) + v
->kvm
->arch
.kvmclock_offset
;
860 vcpu
->hv_clock
.flags
= 0;
863 * The interface expects us to write an even number signaling that the
864 * update is finished. Since the guest won't see the intermediate
865 * state, we just increase by 2 at the end.
867 vcpu
->hv_clock
.version
+= 2;
869 shared_kaddr
= kmap_atomic(vcpu
->time_page
, KM_USER0
);
871 memcpy(shared_kaddr
+ vcpu
->time_offset
, &vcpu
->hv_clock
,
872 sizeof(vcpu
->hv_clock
));
874 kunmap_atomic(shared_kaddr
, KM_USER0
);
876 mark_page_dirty(v
->kvm
, vcpu
->time
>> PAGE_SHIFT
);
879 static int kvm_request_guest_time_update(struct kvm_vcpu
*v
)
881 struct kvm_vcpu_arch
*vcpu
= &v
->arch
;
883 if (!vcpu
->time_page
)
885 set_bit(KVM_REQ_KVMCLOCK_UPDATE
, &v
->requests
);
889 static bool msr_mtrr_valid(unsigned msr
)
892 case 0x200 ... 0x200 + 2 * KVM_NR_VAR_MTRR
- 1:
893 case MSR_MTRRfix64K_00000
:
894 case MSR_MTRRfix16K_80000
:
895 case MSR_MTRRfix16K_A0000
:
896 case MSR_MTRRfix4K_C0000
:
897 case MSR_MTRRfix4K_C8000
:
898 case MSR_MTRRfix4K_D0000
:
899 case MSR_MTRRfix4K_D8000
:
900 case MSR_MTRRfix4K_E0000
:
901 case MSR_MTRRfix4K_E8000
:
902 case MSR_MTRRfix4K_F0000
:
903 case MSR_MTRRfix4K_F8000
:
904 case MSR_MTRRdefType
:
905 case MSR_IA32_CR_PAT
:
913 static bool valid_pat_type(unsigned t
)
915 return t
< 8 && (1 << t
) & 0xf3; /* 0, 1, 4, 5, 6, 7 */
918 static bool valid_mtrr_type(unsigned t
)
920 return t
< 8 && (1 << t
) & 0x73; /* 0, 1, 4, 5, 6 */
923 static bool mtrr_valid(struct kvm_vcpu
*vcpu
, u32 msr
, u64 data
)
927 if (!msr_mtrr_valid(msr
))
930 if (msr
== MSR_IA32_CR_PAT
) {
931 for (i
= 0; i
< 8; i
++)
932 if (!valid_pat_type((data
>> (i
* 8)) & 0xff))
935 } else if (msr
== MSR_MTRRdefType
) {
938 return valid_mtrr_type(data
& 0xff);
939 } else if (msr
>= MSR_MTRRfix64K_00000
&& msr
<= MSR_MTRRfix4K_F8000
) {
940 for (i
= 0; i
< 8 ; i
++)
941 if (!valid_mtrr_type((data
>> (i
* 8)) & 0xff))
947 return valid_mtrr_type(data
& 0xff);
950 static int set_msr_mtrr(struct kvm_vcpu
*vcpu
, u32 msr
, u64 data
)
952 u64
*p
= (u64
*)&vcpu
->arch
.mtrr_state
.fixed_ranges
;
954 if (!mtrr_valid(vcpu
, msr
, data
))
957 if (msr
== MSR_MTRRdefType
) {
958 vcpu
->arch
.mtrr_state
.def_type
= data
;
959 vcpu
->arch
.mtrr_state
.enabled
= (data
& 0xc00) >> 10;
960 } else if (msr
== MSR_MTRRfix64K_00000
)
962 else if (msr
== MSR_MTRRfix16K_80000
|| msr
== MSR_MTRRfix16K_A0000
)
963 p
[1 + msr
- MSR_MTRRfix16K_80000
] = data
;
964 else if (msr
>= MSR_MTRRfix4K_C0000
&& msr
<= MSR_MTRRfix4K_F8000
)
965 p
[3 + msr
- MSR_MTRRfix4K_C0000
] = data
;
966 else if (msr
== MSR_IA32_CR_PAT
)
967 vcpu
->arch
.pat
= data
;
968 else { /* Variable MTRRs */
969 int idx
, is_mtrr_mask
;
972 idx
= (msr
- 0x200) / 2;
973 is_mtrr_mask
= msr
- 0x200 - 2 * idx
;
976 (u64
*)&vcpu
->arch
.mtrr_state
.var_ranges
[idx
].base_lo
;
979 (u64
*)&vcpu
->arch
.mtrr_state
.var_ranges
[idx
].mask_lo
;
983 kvm_mmu_reset_context(vcpu
);
987 static int set_msr_mce(struct kvm_vcpu
*vcpu
, u32 msr
, u64 data
)
989 u64 mcg_cap
= vcpu
->arch
.mcg_cap
;
990 unsigned bank_num
= mcg_cap
& 0xff;
993 case MSR_IA32_MCG_STATUS
:
994 vcpu
->arch
.mcg_status
= data
;
996 case MSR_IA32_MCG_CTL
:
997 if (!(mcg_cap
& MCG_CTL_P
))
999 if (data
!= 0 && data
!= ~(u64
)0)
1001 vcpu
->arch
.mcg_ctl
= data
;
1004 if (msr
>= MSR_IA32_MC0_CTL
&&
1005 msr
< MSR_IA32_MC0_CTL
+ 4 * bank_num
) {
1006 u32 offset
= msr
- MSR_IA32_MC0_CTL
;
1007 /* only 0 or all 1s can be written to IA32_MCi_CTL
1008 * some Linux kernels though clear bit 10 in bank 4 to
1009 * workaround a BIOS/GART TBL issue on AMD K8s, ignore
1010 * this to avoid an uncatched #GP in the guest
1012 if ((offset
& 0x3) == 0 &&
1013 data
!= 0 && (data
| (1 << 10)) != ~(u64
)0)
1015 vcpu
->arch
.mce_banks
[offset
] = data
;
1023 static int xen_hvm_config(struct kvm_vcpu
*vcpu
, u64 data
)
1025 struct kvm
*kvm
= vcpu
->kvm
;
1026 int lm
= is_long_mode(vcpu
);
1027 u8
*blob_addr
= lm
? (u8
*)(long)kvm
->arch
.xen_hvm_config
.blob_addr_64
1028 : (u8
*)(long)kvm
->arch
.xen_hvm_config
.blob_addr_32
;
1029 u8 blob_size
= lm
? kvm
->arch
.xen_hvm_config
.blob_size_64
1030 : kvm
->arch
.xen_hvm_config
.blob_size_32
;
1031 u32 page_num
= data
& ~PAGE_MASK
;
1032 u64 page_addr
= data
& PAGE_MASK
;
1037 if (page_num
>= blob_size
)
1040 page
= kzalloc(PAGE_SIZE
, GFP_KERNEL
);
1044 if (copy_from_user(page
, blob_addr
+ (page_num
* PAGE_SIZE
), PAGE_SIZE
))
1046 if (kvm_write_guest(kvm
, page_addr
, page
, PAGE_SIZE
))
1055 static bool kvm_hv_hypercall_enabled(struct kvm
*kvm
)
1057 return kvm
->arch
.hv_hypercall
& HV_X64_MSR_HYPERCALL_ENABLE
;
1060 static bool kvm_hv_msr_partition_wide(u32 msr
)
1064 case HV_X64_MSR_GUEST_OS_ID
:
1065 case HV_X64_MSR_HYPERCALL
:
1073 static int set_msr_hyperv_pw(struct kvm_vcpu
*vcpu
, u32 msr
, u64 data
)
1075 struct kvm
*kvm
= vcpu
->kvm
;
1078 case HV_X64_MSR_GUEST_OS_ID
:
1079 kvm
->arch
.hv_guest_os_id
= data
;
1080 /* setting guest os id to zero disables hypercall page */
1081 if (!kvm
->arch
.hv_guest_os_id
)
1082 kvm
->arch
.hv_hypercall
&= ~HV_X64_MSR_HYPERCALL_ENABLE
;
1084 case HV_X64_MSR_HYPERCALL
: {
1089 /* if guest os id is not set hypercall should remain disabled */
1090 if (!kvm
->arch
.hv_guest_os_id
)
1092 if (!(data
& HV_X64_MSR_HYPERCALL_ENABLE
)) {
1093 kvm
->arch
.hv_hypercall
= data
;
1096 gfn
= data
>> HV_X64_MSR_HYPERCALL_PAGE_ADDRESS_SHIFT
;
1097 addr
= gfn_to_hva(kvm
, gfn
);
1098 if (kvm_is_error_hva(addr
))
1100 kvm_x86_ops
->patch_hypercall(vcpu
, instructions
);
1101 ((unsigned char *)instructions
)[3] = 0xc3; /* ret */
1102 if (copy_to_user((void __user
*)addr
, instructions
, 4))
1104 kvm
->arch
.hv_hypercall
= data
;
1108 pr_unimpl(vcpu
, "HYPER-V unimplemented wrmsr: 0x%x "
1109 "data 0x%llx\n", msr
, data
);
1115 static int set_msr_hyperv(struct kvm_vcpu
*vcpu
, u32 msr
, u64 data
)
1118 case HV_X64_MSR_APIC_ASSIST_PAGE
: {
1121 if (!(data
& HV_X64_MSR_APIC_ASSIST_PAGE_ENABLE
)) {
1122 vcpu
->arch
.hv_vapic
= data
;
1125 addr
= gfn_to_hva(vcpu
->kvm
, data
>>
1126 HV_X64_MSR_APIC_ASSIST_PAGE_ADDRESS_SHIFT
);
1127 if (kvm_is_error_hva(addr
))
1129 if (clear_user((void __user
*)addr
, PAGE_SIZE
))
1131 vcpu
->arch
.hv_vapic
= data
;
1134 case HV_X64_MSR_EOI
:
1135 return kvm_hv_vapic_msr_write(vcpu
, APIC_EOI
, data
);
1136 case HV_X64_MSR_ICR
:
1137 return kvm_hv_vapic_msr_write(vcpu
, APIC_ICR
, data
);
1138 case HV_X64_MSR_TPR
:
1139 return kvm_hv_vapic_msr_write(vcpu
, APIC_TASKPRI
, data
);
1141 pr_unimpl(vcpu
, "HYPER-V unimplemented wrmsr: 0x%x "
1142 "data 0x%llx\n", msr
, data
);
1149 int kvm_set_msr_common(struct kvm_vcpu
*vcpu
, u32 msr
, u64 data
)
1153 return set_efer(vcpu
, data
);
1155 data
&= ~(u64
)0x40; /* ignore flush filter disable */
1156 data
&= ~(u64
)0x100; /* ignore ignne emulation enable */
1158 pr_unimpl(vcpu
, "unimplemented HWCR wrmsr: 0x%llx\n",
1163 case MSR_FAM10H_MMIO_CONF_BASE
:
1165 pr_unimpl(vcpu
, "unimplemented MMIO_CONF_BASE wrmsr: "
1170 case MSR_AMD64_NB_CFG
:
1172 case MSR_IA32_DEBUGCTLMSR
:
1174 /* We support the non-activated case already */
1176 } else if (data
& ~(DEBUGCTLMSR_LBR
| DEBUGCTLMSR_BTF
)) {
1177 /* Values other than LBR and BTF are vendor-specific,
1178 thus reserved and should throw a #GP */
1181 pr_unimpl(vcpu
, "%s: MSR_IA32_DEBUGCTLMSR 0x%llx, nop\n",
1184 case MSR_IA32_UCODE_REV
:
1185 case MSR_IA32_UCODE_WRITE
:
1186 case MSR_VM_HSAVE_PA
:
1187 case MSR_AMD64_PATCH_LOADER
:
1189 case 0x200 ... 0x2ff:
1190 return set_msr_mtrr(vcpu
, msr
, data
);
1191 case MSR_IA32_APICBASE
:
1192 kvm_set_apic_base(vcpu
, data
);
1194 case APIC_BASE_MSR
... APIC_BASE_MSR
+ 0x3ff:
1195 return kvm_x2apic_msr_write(vcpu
, msr
, data
);
1196 case MSR_IA32_MISC_ENABLE
:
1197 vcpu
->arch
.ia32_misc_enable_msr
= data
;
1199 case MSR_KVM_WALL_CLOCK_NEW
:
1200 case MSR_KVM_WALL_CLOCK
:
1201 vcpu
->kvm
->arch
.wall_clock
= data
;
1202 kvm_write_wall_clock(vcpu
->kvm
, data
);
1204 case MSR_KVM_SYSTEM_TIME_NEW
:
1205 case MSR_KVM_SYSTEM_TIME
: {
1206 if (vcpu
->arch
.time_page
) {
1207 kvm_release_page_dirty(vcpu
->arch
.time_page
);
1208 vcpu
->arch
.time_page
= NULL
;
1211 vcpu
->arch
.time
= data
;
1213 /* we verify if the enable bit is set... */
1217 /* ...but clean it before doing the actual write */
1218 vcpu
->arch
.time_offset
= data
& ~(PAGE_MASK
| 1);
1220 vcpu
->arch
.time_page
=
1221 gfn_to_page(vcpu
->kvm
, data
>> PAGE_SHIFT
);
1223 if (is_error_page(vcpu
->arch
.time_page
)) {
1224 kvm_release_page_clean(vcpu
->arch
.time_page
);
1225 vcpu
->arch
.time_page
= NULL
;
1228 kvm_request_guest_time_update(vcpu
);
1231 case MSR_IA32_MCG_CTL
:
1232 case MSR_IA32_MCG_STATUS
:
1233 case MSR_IA32_MC0_CTL
... MSR_IA32_MC0_CTL
+ 4 * KVM_MAX_MCE_BANKS
- 1:
1234 return set_msr_mce(vcpu
, msr
, data
);
1236 /* Performance counters are not protected by a CPUID bit,
1237 * so we should check all of them in the generic path for the sake of
1238 * cross vendor migration.
1239 * Writing a zero into the event select MSRs disables them,
1240 * which we perfectly emulate ;-). Any other value should be at least
1241 * reported, some guests depend on them.
1243 case MSR_P6_EVNTSEL0
:
1244 case MSR_P6_EVNTSEL1
:
1245 case MSR_K7_EVNTSEL0
:
1246 case MSR_K7_EVNTSEL1
:
1247 case MSR_K7_EVNTSEL2
:
1248 case MSR_K7_EVNTSEL3
:
1250 pr_unimpl(vcpu
, "unimplemented perfctr wrmsr: "
1251 "0x%x data 0x%llx\n", msr
, data
);
1253 /* at least RHEL 4 unconditionally writes to the perfctr registers,
1254 * so we ignore writes to make it happy.
1256 case MSR_P6_PERFCTR0
:
1257 case MSR_P6_PERFCTR1
:
1258 case MSR_K7_PERFCTR0
:
1259 case MSR_K7_PERFCTR1
:
1260 case MSR_K7_PERFCTR2
:
1261 case MSR_K7_PERFCTR3
:
1262 pr_unimpl(vcpu
, "unimplemented perfctr wrmsr: "
1263 "0x%x data 0x%llx\n", msr
, data
);
1265 case HV_X64_MSR_GUEST_OS_ID
... HV_X64_MSR_SINT15
:
1266 if (kvm_hv_msr_partition_wide(msr
)) {
1268 mutex_lock(&vcpu
->kvm
->lock
);
1269 r
= set_msr_hyperv_pw(vcpu
, msr
, data
);
1270 mutex_unlock(&vcpu
->kvm
->lock
);
1273 return set_msr_hyperv(vcpu
, msr
, data
);
1276 if (msr
&& (msr
== vcpu
->kvm
->arch
.xen_hvm_config
.msr
))
1277 return xen_hvm_config(vcpu
, data
);
1279 pr_unimpl(vcpu
, "unhandled wrmsr: 0x%x data %llx\n",
1283 pr_unimpl(vcpu
, "ignored wrmsr: 0x%x data %llx\n",
1290 EXPORT_SYMBOL_GPL(kvm_set_msr_common
);
1294 * Reads an msr value (of 'msr_index') into 'pdata'.
1295 * Returns 0 on success, non-0 otherwise.
1296 * Assumes vcpu_load() was already called.
1298 int kvm_get_msr(struct kvm_vcpu
*vcpu
, u32 msr_index
, u64
*pdata
)
1300 return kvm_x86_ops
->get_msr(vcpu
, msr_index
, pdata
);
1303 static int get_msr_mtrr(struct kvm_vcpu
*vcpu
, u32 msr
, u64
*pdata
)
1305 u64
*p
= (u64
*)&vcpu
->arch
.mtrr_state
.fixed_ranges
;
1307 if (!msr_mtrr_valid(msr
))
1310 if (msr
== MSR_MTRRdefType
)
1311 *pdata
= vcpu
->arch
.mtrr_state
.def_type
+
1312 (vcpu
->arch
.mtrr_state
.enabled
<< 10);
1313 else if (msr
== MSR_MTRRfix64K_00000
)
1315 else if (msr
== MSR_MTRRfix16K_80000
|| msr
== MSR_MTRRfix16K_A0000
)
1316 *pdata
= p
[1 + msr
- MSR_MTRRfix16K_80000
];
1317 else if (msr
>= MSR_MTRRfix4K_C0000
&& msr
<= MSR_MTRRfix4K_F8000
)
1318 *pdata
= p
[3 + msr
- MSR_MTRRfix4K_C0000
];
1319 else if (msr
== MSR_IA32_CR_PAT
)
1320 *pdata
= vcpu
->arch
.pat
;
1321 else { /* Variable MTRRs */
1322 int idx
, is_mtrr_mask
;
1325 idx
= (msr
- 0x200) / 2;
1326 is_mtrr_mask
= msr
- 0x200 - 2 * idx
;
1329 (u64
*)&vcpu
->arch
.mtrr_state
.var_ranges
[idx
].base_lo
;
1332 (u64
*)&vcpu
->arch
.mtrr_state
.var_ranges
[idx
].mask_lo
;
1339 static int get_msr_mce(struct kvm_vcpu
*vcpu
, u32 msr
, u64
*pdata
)
1342 u64 mcg_cap
= vcpu
->arch
.mcg_cap
;
1343 unsigned bank_num
= mcg_cap
& 0xff;
1346 case MSR_IA32_P5_MC_ADDR
:
1347 case MSR_IA32_P5_MC_TYPE
:
1350 case MSR_IA32_MCG_CAP
:
1351 data
= vcpu
->arch
.mcg_cap
;
1353 case MSR_IA32_MCG_CTL
:
1354 if (!(mcg_cap
& MCG_CTL_P
))
1356 data
= vcpu
->arch
.mcg_ctl
;
1358 case MSR_IA32_MCG_STATUS
:
1359 data
= vcpu
->arch
.mcg_status
;
1362 if (msr
>= MSR_IA32_MC0_CTL
&&
1363 msr
< MSR_IA32_MC0_CTL
+ 4 * bank_num
) {
1364 u32 offset
= msr
- MSR_IA32_MC0_CTL
;
1365 data
= vcpu
->arch
.mce_banks
[offset
];
1374 static int get_msr_hyperv_pw(struct kvm_vcpu
*vcpu
, u32 msr
, u64
*pdata
)
1377 struct kvm
*kvm
= vcpu
->kvm
;
1380 case HV_X64_MSR_GUEST_OS_ID
:
1381 data
= kvm
->arch
.hv_guest_os_id
;
1383 case HV_X64_MSR_HYPERCALL
:
1384 data
= kvm
->arch
.hv_hypercall
;
1387 pr_unimpl(vcpu
, "Hyper-V unhandled rdmsr: 0x%x\n", msr
);
1395 static int get_msr_hyperv(struct kvm_vcpu
*vcpu
, u32 msr
, u64
*pdata
)
1400 case HV_X64_MSR_VP_INDEX
: {
1403 kvm_for_each_vcpu(r
, v
, vcpu
->kvm
)
1408 case HV_X64_MSR_EOI
:
1409 return kvm_hv_vapic_msr_read(vcpu
, APIC_EOI
, pdata
);
1410 case HV_X64_MSR_ICR
:
1411 return kvm_hv_vapic_msr_read(vcpu
, APIC_ICR
, pdata
);
1412 case HV_X64_MSR_TPR
:
1413 return kvm_hv_vapic_msr_read(vcpu
, APIC_TASKPRI
, pdata
);
1415 pr_unimpl(vcpu
, "Hyper-V unhandled rdmsr: 0x%x\n", msr
);
1422 int kvm_get_msr_common(struct kvm_vcpu
*vcpu
, u32 msr
, u64
*pdata
)
1427 case MSR_IA32_PLATFORM_ID
:
1428 case MSR_IA32_UCODE_REV
:
1429 case MSR_IA32_EBL_CR_POWERON
:
1430 case MSR_IA32_DEBUGCTLMSR
:
1431 case MSR_IA32_LASTBRANCHFROMIP
:
1432 case MSR_IA32_LASTBRANCHTOIP
:
1433 case MSR_IA32_LASTINTFROMIP
:
1434 case MSR_IA32_LASTINTTOIP
:
1437 case MSR_VM_HSAVE_PA
:
1438 case MSR_P6_PERFCTR0
:
1439 case MSR_P6_PERFCTR1
:
1440 case MSR_P6_EVNTSEL0
:
1441 case MSR_P6_EVNTSEL1
:
1442 case MSR_K7_EVNTSEL0
:
1443 case MSR_K7_PERFCTR0
:
1444 case MSR_K8_INT_PENDING_MSG
:
1445 case MSR_AMD64_NB_CFG
:
1446 case MSR_FAM10H_MMIO_CONF_BASE
:
1450 data
= 0x500 | KVM_NR_VAR_MTRR
;
1452 case 0x200 ... 0x2ff:
1453 return get_msr_mtrr(vcpu
, msr
, pdata
);
1454 case 0xcd: /* fsb frequency */
1457 case MSR_IA32_APICBASE
:
1458 data
= kvm_get_apic_base(vcpu
);
1460 case APIC_BASE_MSR
... APIC_BASE_MSR
+ 0x3ff:
1461 return kvm_x2apic_msr_read(vcpu
, msr
, pdata
);
1463 case MSR_IA32_MISC_ENABLE
:
1464 data
= vcpu
->arch
.ia32_misc_enable_msr
;
1466 case MSR_IA32_PERF_STATUS
:
1467 /* TSC increment by tick */
1469 /* CPU multiplier */
1470 data
|= (((uint64_t)4ULL) << 40);
1473 data
= vcpu
->arch
.efer
;
1475 case MSR_KVM_WALL_CLOCK
:
1476 case MSR_KVM_WALL_CLOCK_NEW
:
1477 data
= vcpu
->kvm
->arch
.wall_clock
;
1479 case MSR_KVM_SYSTEM_TIME
:
1480 case MSR_KVM_SYSTEM_TIME_NEW
:
1481 data
= vcpu
->arch
.time
;
1483 case MSR_IA32_P5_MC_ADDR
:
1484 case MSR_IA32_P5_MC_TYPE
:
1485 case MSR_IA32_MCG_CAP
:
1486 case MSR_IA32_MCG_CTL
:
1487 case MSR_IA32_MCG_STATUS
:
1488 case MSR_IA32_MC0_CTL
... MSR_IA32_MC0_CTL
+ 4 * KVM_MAX_MCE_BANKS
- 1:
1489 return get_msr_mce(vcpu
, msr
, pdata
);
1490 case HV_X64_MSR_GUEST_OS_ID
... HV_X64_MSR_SINT15
:
1491 if (kvm_hv_msr_partition_wide(msr
)) {
1493 mutex_lock(&vcpu
->kvm
->lock
);
1494 r
= get_msr_hyperv_pw(vcpu
, msr
, pdata
);
1495 mutex_unlock(&vcpu
->kvm
->lock
);
1498 return get_msr_hyperv(vcpu
, msr
, pdata
);
1502 pr_unimpl(vcpu
, "unhandled rdmsr: 0x%x\n", msr
);
1505 pr_unimpl(vcpu
, "ignored rdmsr: 0x%x\n", msr
);
1513 EXPORT_SYMBOL_GPL(kvm_get_msr_common
);
1516 * Read or write a bunch of msrs. All parameters are kernel addresses.
1518 * @return number of msrs set successfully.
1520 static int __msr_io(struct kvm_vcpu
*vcpu
, struct kvm_msrs
*msrs
,
1521 struct kvm_msr_entry
*entries
,
1522 int (*do_msr
)(struct kvm_vcpu
*vcpu
,
1523 unsigned index
, u64
*data
))
1529 idx
= srcu_read_lock(&vcpu
->kvm
->srcu
);
1530 for (i
= 0; i
< msrs
->nmsrs
; ++i
)
1531 if (do_msr(vcpu
, entries
[i
].index
, &entries
[i
].data
))
1533 srcu_read_unlock(&vcpu
->kvm
->srcu
, idx
);
1541 * Read or write a bunch of msrs. Parameters are user addresses.
1543 * @return number of msrs set successfully.
1545 static int msr_io(struct kvm_vcpu
*vcpu
, struct kvm_msrs __user
*user_msrs
,
1546 int (*do_msr
)(struct kvm_vcpu
*vcpu
,
1547 unsigned index
, u64
*data
),
1550 struct kvm_msrs msrs
;
1551 struct kvm_msr_entry
*entries
;
1556 if (copy_from_user(&msrs
, user_msrs
, sizeof msrs
))
1560 if (msrs
.nmsrs
>= MAX_IO_MSRS
)
1564 size
= sizeof(struct kvm_msr_entry
) * msrs
.nmsrs
;
1565 entries
= kmalloc(size
, GFP_KERNEL
);
1570 if (copy_from_user(entries
, user_msrs
->entries
, size
))
1573 r
= n
= __msr_io(vcpu
, &msrs
, entries
, do_msr
);
1578 if (writeback
&& copy_to_user(user_msrs
->entries
, entries
, size
))
1589 int kvm_dev_ioctl_check_extension(long ext
)
1594 case KVM_CAP_IRQCHIP
:
1596 case KVM_CAP_MMU_SHADOW_CACHE_CONTROL
:
1597 case KVM_CAP_SET_TSS_ADDR
:
1598 case KVM_CAP_EXT_CPUID
:
1599 case KVM_CAP_CLOCKSOURCE
:
1601 case KVM_CAP_NOP_IO_DELAY
:
1602 case KVM_CAP_MP_STATE
:
1603 case KVM_CAP_SYNC_MMU
:
1604 case KVM_CAP_REINJECT_CONTROL
:
1605 case KVM_CAP_IRQ_INJECT_STATUS
:
1606 case KVM_CAP_ASSIGN_DEV_IRQ
:
1608 case KVM_CAP_IOEVENTFD
:
1610 case KVM_CAP_PIT_STATE2
:
1611 case KVM_CAP_SET_IDENTITY_MAP_ADDR
:
1612 case KVM_CAP_XEN_HVM
:
1613 case KVM_CAP_ADJUST_CLOCK
:
1614 case KVM_CAP_VCPU_EVENTS
:
1615 case KVM_CAP_HYPERV
:
1616 case KVM_CAP_HYPERV_VAPIC
:
1617 case KVM_CAP_HYPERV_SPIN
:
1618 case KVM_CAP_PCI_SEGMENT
:
1619 case KVM_CAP_DEBUGREGS
:
1620 case KVM_CAP_X86_ROBUST_SINGLESTEP
:
1623 case KVM_CAP_COALESCED_MMIO
:
1624 r
= KVM_COALESCED_MMIO_PAGE_OFFSET
;
1627 r
= !kvm_x86_ops
->cpu_has_accelerated_tpr();
1629 case KVM_CAP_NR_VCPUS
:
1632 case KVM_CAP_NR_MEMSLOTS
:
1633 r
= KVM_MEMORY_SLOTS
;
1635 case KVM_CAP_PV_MMU
: /* obsolete */
1642 r
= KVM_MAX_MCE_BANKS
;
1652 long kvm_arch_dev_ioctl(struct file
*filp
,
1653 unsigned int ioctl
, unsigned long arg
)
1655 void __user
*argp
= (void __user
*)arg
;
1659 case KVM_GET_MSR_INDEX_LIST
: {
1660 struct kvm_msr_list __user
*user_msr_list
= argp
;
1661 struct kvm_msr_list msr_list
;
1665 if (copy_from_user(&msr_list
, user_msr_list
, sizeof msr_list
))
1668 msr_list
.nmsrs
= num_msrs_to_save
+ ARRAY_SIZE(emulated_msrs
);
1669 if (copy_to_user(user_msr_list
, &msr_list
, sizeof msr_list
))
1672 if (n
< msr_list
.nmsrs
)
1675 if (copy_to_user(user_msr_list
->indices
, &msrs_to_save
,
1676 num_msrs_to_save
* sizeof(u32
)))
1678 if (copy_to_user(user_msr_list
->indices
+ num_msrs_to_save
,
1680 ARRAY_SIZE(emulated_msrs
) * sizeof(u32
)))
1685 case KVM_GET_SUPPORTED_CPUID
: {
1686 struct kvm_cpuid2 __user
*cpuid_arg
= argp
;
1687 struct kvm_cpuid2 cpuid
;
1690 if (copy_from_user(&cpuid
, cpuid_arg
, sizeof cpuid
))
1692 r
= kvm_dev_ioctl_get_supported_cpuid(&cpuid
,
1693 cpuid_arg
->entries
);
1698 if (copy_to_user(cpuid_arg
, &cpuid
, sizeof cpuid
))
1703 case KVM_X86_GET_MCE_CAP_SUPPORTED
: {
1706 mce_cap
= KVM_MCE_CAP_SUPPORTED
;
1708 if (copy_to_user(argp
, &mce_cap
, sizeof mce_cap
))
1720 void kvm_arch_vcpu_load(struct kvm_vcpu
*vcpu
, int cpu
)
1722 kvm_x86_ops
->vcpu_load(vcpu
, cpu
);
1723 if (unlikely(per_cpu(cpu_tsc_khz
, cpu
) == 0)) {
1724 unsigned long khz
= cpufreq_quick_get(cpu
);
1727 per_cpu(cpu_tsc_khz
, cpu
) = khz
;
1729 kvm_request_guest_time_update(vcpu
);
1732 void kvm_arch_vcpu_put(struct kvm_vcpu
*vcpu
)
1734 kvm_x86_ops
->vcpu_put(vcpu
);
1735 kvm_put_guest_fpu(vcpu
);
1738 static int is_efer_nx(void)
1740 unsigned long long efer
= 0;
1742 rdmsrl_safe(MSR_EFER
, &efer
);
1743 return efer
& EFER_NX
;
1746 static void cpuid_fix_nx_cap(struct kvm_vcpu
*vcpu
)
1749 struct kvm_cpuid_entry2
*e
, *entry
;
1752 for (i
= 0; i
< vcpu
->arch
.cpuid_nent
; ++i
) {
1753 e
= &vcpu
->arch
.cpuid_entries
[i
];
1754 if (e
->function
== 0x80000001) {
1759 if (entry
&& (entry
->edx
& (1 << 20)) && !is_efer_nx()) {
1760 entry
->edx
&= ~(1 << 20);
1761 printk(KERN_INFO
"kvm: guest NX capability removed\n");
1765 /* when an old userspace process fills a new kernel module */
1766 static int kvm_vcpu_ioctl_set_cpuid(struct kvm_vcpu
*vcpu
,
1767 struct kvm_cpuid
*cpuid
,
1768 struct kvm_cpuid_entry __user
*entries
)
1771 struct kvm_cpuid_entry
*cpuid_entries
;
1774 if (cpuid
->nent
> KVM_MAX_CPUID_ENTRIES
)
1777 cpuid_entries
= vmalloc(sizeof(struct kvm_cpuid_entry
) * cpuid
->nent
);
1781 if (copy_from_user(cpuid_entries
, entries
,
1782 cpuid
->nent
* sizeof(struct kvm_cpuid_entry
)))
1785 for (i
= 0; i
< cpuid
->nent
; i
++) {
1786 vcpu
->arch
.cpuid_entries
[i
].function
= cpuid_entries
[i
].function
;
1787 vcpu
->arch
.cpuid_entries
[i
].eax
= cpuid_entries
[i
].eax
;
1788 vcpu
->arch
.cpuid_entries
[i
].ebx
= cpuid_entries
[i
].ebx
;
1789 vcpu
->arch
.cpuid_entries
[i
].ecx
= cpuid_entries
[i
].ecx
;
1790 vcpu
->arch
.cpuid_entries
[i
].edx
= cpuid_entries
[i
].edx
;
1791 vcpu
->arch
.cpuid_entries
[i
].index
= 0;
1792 vcpu
->arch
.cpuid_entries
[i
].flags
= 0;
1793 vcpu
->arch
.cpuid_entries
[i
].padding
[0] = 0;
1794 vcpu
->arch
.cpuid_entries
[i
].padding
[1] = 0;
1795 vcpu
->arch
.cpuid_entries
[i
].padding
[2] = 0;
1797 vcpu
->arch
.cpuid_nent
= cpuid
->nent
;
1798 cpuid_fix_nx_cap(vcpu
);
1800 kvm_apic_set_version(vcpu
);
1801 kvm_x86_ops
->cpuid_update(vcpu
);
1805 vfree(cpuid_entries
);
1810 static int kvm_vcpu_ioctl_set_cpuid2(struct kvm_vcpu
*vcpu
,
1811 struct kvm_cpuid2
*cpuid
,
1812 struct kvm_cpuid_entry2 __user
*entries
)
1817 if (cpuid
->nent
> KVM_MAX_CPUID_ENTRIES
)
1820 if (copy_from_user(&vcpu
->arch
.cpuid_entries
, entries
,
1821 cpuid
->nent
* sizeof(struct kvm_cpuid_entry2
)))
1824 vcpu
->arch
.cpuid_nent
= cpuid
->nent
;
1825 kvm_apic_set_version(vcpu
);
1826 kvm_x86_ops
->cpuid_update(vcpu
);
1834 static int kvm_vcpu_ioctl_get_cpuid2(struct kvm_vcpu
*vcpu
,
1835 struct kvm_cpuid2
*cpuid
,
1836 struct kvm_cpuid_entry2 __user
*entries
)
1842 if (cpuid
->nent
< vcpu
->arch
.cpuid_nent
)
1845 if (copy_to_user(entries
, &vcpu
->arch
.cpuid_entries
,
1846 vcpu
->arch
.cpuid_nent
* sizeof(struct kvm_cpuid_entry2
)))
1851 cpuid
->nent
= vcpu
->arch
.cpuid_nent
;
1856 static void do_cpuid_1_ent(struct kvm_cpuid_entry2
*entry
, u32 function
,
1859 entry
->function
= function
;
1860 entry
->index
= index
;
1861 cpuid_count(entry
->function
, entry
->index
,
1862 &entry
->eax
, &entry
->ebx
, &entry
->ecx
, &entry
->edx
);
1866 #define F(x) bit(X86_FEATURE_##x)
1868 static void do_cpuid_ent(struct kvm_cpuid_entry2
*entry
, u32 function
,
1869 u32 index
, int *nent
, int maxnent
)
1871 unsigned f_nx
= is_efer_nx() ? F(NX
) : 0;
1872 #ifdef CONFIG_X86_64
1873 unsigned f_gbpages
= (kvm_x86_ops
->get_lpage_level() == PT_PDPE_LEVEL
)
1875 unsigned f_lm
= F(LM
);
1877 unsigned f_gbpages
= 0;
1880 unsigned f_rdtscp
= kvm_x86_ops
->rdtscp_supported() ? F(RDTSCP
) : 0;
1883 const u32 kvm_supported_word0_x86_features
=
1884 F(FPU
) | F(VME
) | F(DE
) | F(PSE
) |
1885 F(TSC
) | F(MSR
) | F(PAE
) | F(MCE
) |
1886 F(CX8
) | F(APIC
) | 0 /* Reserved */ | F(SEP
) |
1887 F(MTRR
) | F(PGE
) | F(MCA
) | F(CMOV
) |
1888 F(PAT
) | F(PSE36
) | 0 /* PSN */ | F(CLFLSH
) |
1889 0 /* Reserved, DS, ACPI */ | F(MMX
) |
1890 F(FXSR
) | F(XMM
) | F(XMM2
) | F(SELFSNOOP
) |
1891 0 /* HTT, TM, Reserved, PBE */;
1892 /* cpuid 0x80000001.edx */
1893 const u32 kvm_supported_word1_x86_features
=
1894 F(FPU
) | F(VME
) | F(DE
) | F(PSE
) |
1895 F(TSC
) | F(MSR
) | F(PAE
) | F(MCE
) |
1896 F(CX8
) | F(APIC
) | 0 /* Reserved */ | F(SYSCALL
) |
1897 F(MTRR
) | F(PGE
) | F(MCA
) | F(CMOV
) |
1898 F(PAT
) | F(PSE36
) | 0 /* Reserved */ |
1899 f_nx
| 0 /* Reserved */ | F(MMXEXT
) | F(MMX
) |
1900 F(FXSR
) | F(FXSR_OPT
) | f_gbpages
| f_rdtscp
|
1901 0 /* Reserved */ | f_lm
| F(3DNOWEXT
) | F(3DNOW
);
1903 const u32 kvm_supported_word4_x86_features
=
1904 F(XMM3
) | 0 /* Reserved, DTES64, MONITOR */ |
1905 0 /* DS-CPL, VMX, SMX, EST */ |
1906 0 /* TM2 */ | F(SSSE3
) | 0 /* CNXT-ID */ | 0 /* Reserved */ |
1907 0 /* Reserved */ | F(CX16
) | 0 /* xTPR Update, PDCM */ |
1908 0 /* Reserved, DCA */ | F(XMM4_1
) |
1909 F(XMM4_2
) | F(X2APIC
) | F(MOVBE
) | F(POPCNT
) |
1910 0 /* Reserved, XSAVE, OSXSAVE */;
1911 /* cpuid 0x80000001.ecx */
1912 const u32 kvm_supported_word6_x86_features
=
1913 F(LAHF_LM
) | F(CMP_LEGACY
) | F(SVM
) | 0 /* ExtApicSpace */ |
1914 F(CR8_LEGACY
) | F(ABM
) | F(SSE4A
) | F(MISALIGNSSE
) |
1915 F(3DNOWPREFETCH
) | 0 /* OSVW */ | 0 /* IBS */ | F(SSE5
) |
1916 0 /* SKINIT */ | 0 /* WDT */;
1918 /* all calls to cpuid_count() should be made on the same cpu */
1920 do_cpuid_1_ent(entry
, function
, index
);
1925 entry
->eax
= min(entry
->eax
, (u32
)0xb);
1928 entry
->edx
&= kvm_supported_word0_x86_features
;
1929 entry
->ecx
&= kvm_supported_word4_x86_features
;
1930 /* we support x2apic emulation even if host does not support
1931 * it since we emulate x2apic in software */
1932 entry
->ecx
|= F(X2APIC
);
1934 /* function 2 entries are STATEFUL. That is, repeated cpuid commands
1935 * may return different values. This forces us to get_cpu() before
1936 * issuing the first command, and also to emulate this annoying behavior
1937 * in kvm_emulate_cpuid() using KVM_CPUID_FLAG_STATE_READ_NEXT */
1939 int t
, times
= entry
->eax
& 0xff;
1941 entry
->flags
|= KVM_CPUID_FLAG_STATEFUL_FUNC
;
1942 entry
->flags
|= KVM_CPUID_FLAG_STATE_READ_NEXT
;
1943 for (t
= 1; t
< times
&& *nent
< maxnent
; ++t
) {
1944 do_cpuid_1_ent(&entry
[t
], function
, 0);
1945 entry
[t
].flags
|= KVM_CPUID_FLAG_STATEFUL_FUNC
;
1950 /* function 4 and 0xb have additional index. */
1954 entry
->flags
|= KVM_CPUID_FLAG_SIGNIFCANT_INDEX
;
1955 /* read more entries until cache_type is zero */
1956 for (i
= 1; *nent
< maxnent
; ++i
) {
1957 cache_type
= entry
[i
- 1].eax
& 0x1f;
1960 do_cpuid_1_ent(&entry
[i
], function
, i
);
1962 KVM_CPUID_FLAG_SIGNIFCANT_INDEX
;
1970 entry
->flags
|= KVM_CPUID_FLAG_SIGNIFCANT_INDEX
;
1971 /* read more entries until level_type is zero */
1972 for (i
= 1; *nent
< maxnent
; ++i
) {
1973 level_type
= entry
[i
- 1].ecx
& 0xff00;
1976 do_cpuid_1_ent(&entry
[i
], function
, i
);
1978 KVM_CPUID_FLAG_SIGNIFCANT_INDEX
;
1983 case KVM_CPUID_SIGNATURE
: {
1984 char signature
[12] = "KVMKVMKVM\0\0";
1985 u32
*sigptr
= (u32
*)signature
;
1987 entry
->ebx
= sigptr
[0];
1988 entry
->ecx
= sigptr
[1];
1989 entry
->edx
= sigptr
[2];
1992 case KVM_CPUID_FEATURES
:
1993 entry
->eax
= (1 << KVM_FEATURE_CLOCKSOURCE
) |
1994 (1 << KVM_FEATURE_NOP_IO_DELAY
) |
1995 (1 << KVM_FEATURE_CLOCKSOURCE2
) |
1996 (1 << KVM_FEATURE_CLOCKSOURCE_STABLE_BIT
);
2002 entry
->eax
= min(entry
->eax
, 0x8000001a);
2005 entry
->edx
&= kvm_supported_word1_x86_features
;
2006 entry
->ecx
&= kvm_supported_word6_x86_features
;
2010 kvm_x86_ops
->set_supported_cpuid(function
, entry
);
2017 static int kvm_dev_ioctl_get_supported_cpuid(struct kvm_cpuid2
*cpuid
,
2018 struct kvm_cpuid_entry2 __user
*entries
)
2020 struct kvm_cpuid_entry2
*cpuid_entries
;
2021 int limit
, nent
= 0, r
= -E2BIG
;
2024 if (cpuid
->nent
< 1)
2026 if (cpuid
->nent
> KVM_MAX_CPUID_ENTRIES
)
2027 cpuid
->nent
= KVM_MAX_CPUID_ENTRIES
;
2029 cpuid_entries
= vmalloc(sizeof(struct kvm_cpuid_entry2
) * cpuid
->nent
);
2033 do_cpuid_ent(&cpuid_entries
[0], 0, 0, &nent
, cpuid
->nent
);
2034 limit
= cpuid_entries
[0].eax
;
2035 for (func
= 1; func
<= limit
&& nent
< cpuid
->nent
; ++func
)
2036 do_cpuid_ent(&cpuid_entries
[nent
], func
, 0,
2037 &nent
, cpuid
->nent
);
2039 if (nent
>= cpuid
->nent
)
2042 do_cpuid_ent(&cpuid_entries
[nent
], 0x80000000, 0, &nent
, cpuid
->nent
);
2043 limit
= cpuid_entries
[nent
- 1].eax
;
2044 for (func
= 0x80000001; func
<= limit
&& nent
< cpuid
->nent
; ++func
)
2045 do_cpuid_ent(&cpuid_entries
[nent
], func
, 0,
2046 &nent
, cpuid
->nent
);
2051 if (nent
>= cpuid
->nent
)
2054 do_cpuid_ent(&cpuid_entries
[nent
], KVM_CPUID_SIGNATURE
, 0, &nent
,
2058 if (nent
>= cpuid
->nent
)
2061 do_cpuid_ent(&cpuid_entries
[nent
], KVM_CPUID_FEATURES
, 0, &nent
,
2065 if (nent
>= cpuid
->nent
)
2069 if (copy_to_user(entries
, cpuid_entries
,
2070 nent
* sizeof(struct kvm_cpuid_entry2
)))
2076 vfree(cpuid_entries
);
2081 static int kvm_vcpu_ioctl_get_lapic(struct kvm_vcpu
*vcpu
,
2082 struct kvm_lapic_state
*s
)
2085 memcpy(s
->regs
, vcpu
->arch
.apic
->regs
, sizeof *s
);
2091 static int kvm_vcpu_ioctl_set_lapic(struct kvm_vcpu
*vcpu
,
2092 struct kvm_lapic_state
*s
)
2095 memcpy(vcpu
->arch
.apic
->regs
, s
->regs
, sizeof *s
);
2096 kvm_apic_post_state_restore(vcpu
);
2097 update_cr8_intercept(vcpu
);
2103 static int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu
*vcpu
,
2104 struct kvm_interrupt
*irq
)
2106 if (irq
->irq
< 0 || irq
->irq
>= 256)
2108 if (irqchip_in_kernel(vcpu
->kvm
))
2112 kvm_queue_interrupt(vcpu
, irq
->irq
, false);
2119 static int kvm_vcpu_ioctl_nmi(struct kvm_vcpu
*vcpu
)
2122 kvm_inject_nmi(vcpu
);
2128 static int vcpu_ioctl_tpr_access_reporting(struct kvm_vcpu
*vcpu
,
2129 struct kvm_tpr_access_ctl
*tac
)
2133 vcpu
->arch
.tpr_access_reporting
= !!tac
->enabled
;
2137 static int kvm_vcpu_ioctl_x86_setup_mce(struct kvm_vcpu
*vcpu
,
2141 unsigned bank_num
= mcg_cap
& 0xff, bank
;
2145 if (!bank_num
|| bank_num
>= KVM_MAX_MCE_BANKS
)
2147 if (mcg_cap
& ~(KVM_MCE_CAP_SUPPORTED
| 0xff | 0xff0000))
2150 vcpu
->arch
.mcg_cap
= mcg_cap
;
2151 /* Init IA32_MCG_CTL to all 1s */
2152 if (mcg_cap
& MCG_CTL_P
)
2153 vcpu
->arch
.mcg_ctl
= ~(u64
)0;
2154 /* Init IA32_MCi_CTL to all 1s */
2155 for (bank
= 0; bank
< bank_num
; bank
++)
2156 vcpu
->arch
.mce_banks
[bank
*4] = ~(u64
)0;
2162 static int kvm_vcpu_ioctl_x86_set_mce(struct kvm_vcpu
*vcpu
,
2163 struct kvm_x86_mce
*mce
)
2165 u64 mcg_cap
= vcpu
->arch
.mcg_cap
;
2166 unsigned bank_num
= mcg_cap
& 0xff;
2167 u64
*banks
= vcpu
->arch
.mce_banks
;
2169 if (mce
->bank
>= bank_num
|| !(mce
->status
& MCI_STATUS_VAL
))
2172 * if IA32_MCG_CTL is not all 1s, the uncorrected error
2173 * reporting is disabled
2175 if ((mce
->status
& MCI_STATUS_UC
) && (mcg_cap
& MCG_CTL_P
) &&
2176 vcpu
->arch
.mcg_ctl
!= ~(u64
)0)
2178 banks
+= 4 * mce
->bank
;
2180 * if IA32_MCi_CTL is not all 1s, the uncorrected error
2181 * reporting is disabled for the bank
2183 if ((mce
->status
& MCI_STATUS_UC
) && banks
[0] != ~(u64
)0)
2185 if (mce
->status
& MCI_STATUS_UC
) {
2186 if ((vcpu
->arch
.mcg_status
& MCG_STATUS_MCIP
) ||
2187 !kvm_read_cr4_bits(vcpu
, X86_CR4_MCE
)) {
2188 printk(KERN_DEBUG
"kvm: set_mce: "
2189 "injects mce exception while "
2190 "previous one is in progress!\n");
2191 set_bit(KVM_REQ_TRIPLE_FAULT
, &vcpu
->requests
);
2194 if (banks
[1] & MCI_STATUS_VAL
)
2195 mce
->status
|= MCI_STATUS_OVER
;
2196 banks
[2] = mce
->addr
;
2197 banks
[3] = mce
->misc
;
2198 vcpu
->arch
.mcg_status
= mce
->mcg_status
;
2199 banks
[1] = mce
->status
;
2200 kvm_queue_exception(vcpu
, MC_VECTOR
);
2201 } else if (!(banks
[1] & MCI_STATUS_VAL
)
2202 || !(banks
[1] & MCI_STATUS_UC
)) {
2203 if (banks
[1] & MCI_STATUS_VAL
)
2204 mce
->status
|= MCI_STATUS_OVER
;
2205 banks
[2] = mce
->addr
;
2206 banks
[3] = mce
->misc
;
2207 banks
[1] = mce
->status
;
2209 banks
[1] |= MCI_STATUS_OVER
;
2213 static void kvm_vcpu_ioctl_x86_get_vcpu_events(struct kvm_vcpu
*vcpu
,
2214 struct kvm_vcpu_events
*events
)
2218 events
->exception
.injected
=
2219 vcpu
->arch
.exception
.pending
&&
2220 !kvm_exception_is_soft(vcpu
->arch
.exception
.nr
);
2221 events
->exception
.nr
= vcpu
->arch
.exception
.nr
;
2222 events
->exception
.has_error_code
= vcpu
->arch
.exception
.has_error_code
;
2223 events
->exception
.error_code
= vcpu
->arch
.exception
.error_code
;
2225 events
->interrupt
.injected
=
2226 vcpu
->arch
.interrupt
.pending
&& !vcpu
->arch
.interrupt
.soft
;
2227 events
->interrupt
.nr
= vcpu
->arch
.interrupt
.nr
;
2228 events
->interrupt
.soft
= 0;
2229 events
->interrupt
.shadow
=
2230 kvm_x86_ops
->get_interrupt_shadow(vcpu
,
2231 KVM_X86_SHADOW_INT_MOV_SS
| KVM_X86_SHADOW_INT_STI
);
2233 events
->nmi
.injected
= vcpu
->arch
.nmi_injected
;
2234 events
->nmi
.pending
= vcpu
->arch
.nmi_pending
;
2235 events
->nmi
.masked
= kvm_x86_ops
->get_nmi_mask(vcpu
);
2237 events
->sipi_vector
= vcpu
->arch
.sipi_vector
;
2239 events
->flags
= (KVM_VCPUEVENT_VALID_NMI_PENDING
2240 | KVM_VCPUEVENT_VALID_SIPI_VECTOR
2241 | KVM_VCPUEVENT_VALID_SHADOW
);
2246 static int kvm_vcpu_ioctl_x86_set_vcpu_events(struct kvm_vcpu
*vcpu
,
2247 struct kvm_vcpu_events
*events
)
2249 if (events
->flags
& ~(KVM_VCPUEVENT_VALID_NMI_PENDING
2250 | KVM_VCPUEVENT_VALID_SIPI_VECTOR
2251 | KVM_VCPUEVENT_VALID_SHADOW
))
2256 vcpu
->arch
.exception
.pending
= events
->exception
.injected
;
2257 vcpu
->arch
.exception
.nr
= events
->exception
.nr
;
2258 vcpu
->arch
.exception
.has_error_code
= events
->exception
.has_error_code
;
2259 vcpu
->arch
.exception
.error_code
= events
->exception
.error_code
;
2261 vcpu
->arch
.interrupt
.pending
= events
->interrupt
.injected
;
2262 vcpu
->arch
.interrupt
.nr
= events
->interrupt
.nr
;
2263 vcpu
->arch
.interrupt
.soft
= events
->interrupt
.soft
;
2264 if (vcpu
->arch
.interrupt
.pending
&& irqchip_in_kernel(vcpu
->kvm
))
2265 kvm_pic_clear_isr_ack(vcpu
->kvm
);
2266 if (events
->flags
& KVM_VCPUEVENT_VALID_SHADOW
)
2267 kvm_x86_ops
->set_interrupt_shadow(vcpu
,
2268 events
->interrupt
.shadow
);
2270 vcpu
->arch
.nmi_injected
= events
->nmi
.injected
;
2271 if (events
->flags
& KVM_VCPUEVENT_VALID_NMI_PENDING
)
2272 vcpu
->arch
.nmi_pending
= events
->nmi
.pending
;
2273 kvm_x86_ops
->set_nmi_mask(vcpu
, events
->nmi
.masked
);
2275 if (events
->flags
& KVM_VCPUEVENT_VALID_SIPI_VECTOR
)
2276 vcpu
->arch
.sipi_vector
= events
->sipi_vector
;
2283 static void kvm_vcpu_ioctl_x86_get_debugregs(struct kvm_vcpu
*vcpu
,
2284 struct kvm_debugregs
*dbgregs
)
2288 memcpy(dbgregs
->db
, vcpu
->arch
.db
, sizeof(vcpu
->arch
.db
));
2289 dbgregs
->dr6
= vcpu
->arch
.dr6
;
2290 dbgregs
->dr7
= vcpu
->arch
.dr7
;
2296 static int kvm_vcpu_ioctl_x86_set_debugregs(struct kvm_vcpu
*vcpu
,
2297 struct kvm_debugregs
*dbgregs
)
2304 memcpy(vcpu
->arch
.db
, dbgregs
->db
, sizeof(vcpu
->arch
.db
));
2305 vcpu
->arch
.dr6
= dbgregs
->dr6
;
2306 vcpu
->arch
.dr7
= dbgregs
->dr7
;
2313 long kvm_arch_vcpu_ioctl(struct file
*filp
,
2314 unsigned int ioctl
, unsigned long arg
)
2316 struct kvm_vcpu
*vcpu
= filp
->private_data
;
2317 void __user
*argp
= (void __user
*)arg
;
2319 struct kvm_lapic_state
*lapic
= NULL
;
2322 case KVM_GET_LAPIC
: {
2324 if (!vcpu
->arch
.apic
)
2326 lapic
= kzalloc(sizeof(struct kvm_lapic_state
), GFP_KERNEL
);
2331 r
= kvm_vcpu_ioctl_get_lapic(vcpu
, lapic
);
2335 if (copy_to_user(argp
, lapic
, sizeof(struct kvm_lapic_state
)))
2340 case KVM_SET_LAPIC
: {
2342 if (!vcpu
->arch
.apic
)
2344 lapic
= kmalloc(sizeof(struct kvm_lapic_state
), GFP_KERNEL
);
2349 if (copy_from_user(lapic
, argp
, sizeof(struct kvm_lapic_state
)))
2351 r
= kvm_vcpu_ioctl_set_lapic(vcpu
, lapic
);
2357 case KVM_INTERRUPT
: {
2358 struct kvm_interrupt irq
;
2361 if (copy_from_user(&irq
, argp
, sizeof irq
))
2363 r
= kvm_vcpu_ioctl_interrupt(vcpu
, &irq
);
2370 r
= kvm_vcpu_ioctl_nmi(vcpu
);
2376 case KVM_SET_CPUID
: {
2377 struct kvm_cpuid __user
*cpuid_arg
= argp
;
2378 struct kvm_cpuid cpuid
;
2381 if (copy_from_user(&cpuid
, cpuid_arg
, sizeof cpuid
))
2383 r
= kvm_vcpu_ioctl_set_cpuid(vcpu
, &cpuid
, cpuid_arg
->entries
);
2388 case KVM_SET_CPUID2
: {
2389 struct kvm_cpuid2 __user
*cpuid_arg
= argp
;
2390 struct kvm_cpuid2 cpuid
;
2393 if (copy_from_user(&cpuid
, cpuid_arg
, sizeof cpuid
))
2395 r
= kvm_vcpu_ioctl_set_cpuid2(vcpu
, &cpuid
,
2396 cpuid_arg
->entries
);
2401 case KVM_GET_CPUID2
: {
2402 struct kvm_cpuid2 __user
*cpuid_arg
= argp
;
2403 struct kvm_cpuid2 cpuid
;
2406 if (copy_from_user(&cpuid
, cpuid_arg
, sizeof cpuid
))
2408 r
= kvm_vcpu_ioctl_get_cpuid2(vcpu
, &cpuid
,
2409 cpuid_arg
->entries
);
2413 if (copy_to_user(cpuid_arg
, &cpuid
, sizeof cpuid
))
2419 r
= msr_io(vcpu
, argp
, kvm_get_msr
, 1);
2422 r
= msr_io(vcpu
, argp
, do_set_msr
, 0);
2424 case KVM_TPR_ACCESS_REPORTING
: {
2425 struct kvm_tpr_access_ctl tac
;
2428 if (copy_from_user(&tac
, argp
, sizeof tac
))
2430 r
= vcpu_ioctl_tpr_access_reporting(vcpu
, &tac
);
2434 if (copy_to_user(argp
, &tac
, sizeof tac
))
2439 case KVM_SET_VAPIC_ADDR
: {
2440 struct kvm_vapic_addr va
;
2443 if (!irqchip_in_kernel(vcpu
->kvm
))
2446 if (copy_from_user(&va
, argp
, sizeof va
))
2449 kvm_lapic_set_vapic_addr(vcpu
, va
.vapic_addr
);
2452 case KVM_X86_SETUP_MCE
: {
2456 if (copy_from_user(&mcg_cap
, argp
, sizeof mcg_cap
))
2458 r
= kvm_vcpu_ioctl_x86_setup_mce(vcpu
, mcg_cap
);
2461 case KVM_X86_SET_MCE
: {
2462 struct kvm_x86_mce mce
;
2465 if (copy_from_user(&mce
, argp
, sizeof mce
))
2468 r
= kvm_vcpu_ioctl_x86_set_mce(vcpu
, &mce
);
2472 case KVM_GET_VCPU_EVENTS
: {
2473 struct kvm_vcpu_events events
;
2475 kvm_vcpu_ioctl_x86_get_vcpu_events(vcpu
, &events
);
2478 if (copy_to_user(argp
, &events
, sizeof(struct kvm_vcpu_events
)))
2483 case KVM_SET_VCPU_EVENTS
: {
2484 struct kvm_vcpu_events events
;
2487 if (copy_from_user(&events
, argp
, sizeof(struct kvm_vcpu_events
)))
2490 r
= kvm_vcpu_ioctl_x86_set_vcpu_events(vcpu
, &events
);
2493 case KVM_GET_DEBUGREGS
: {
2494 struct kvm_debugregs dbgregs
;
2496 kvm_vcpu_ioctl_x86_get_debugregs(vcpu
, &dbgregs
);
2499 if (copy_to_user(argp
, &dbgregs
,
2500 sizeof(struct kvm_debugregs
)))
2505 case KVM_SET_DEBUGREGS
: {
2506 struct kvm_debugregs dbgregs
;
2509 if (copy_from_user(&dbgregs
, argp
,
2510 sizeof(struct kvm_debugregs
)))
2513 r
= kvm_vcpu_ioctl_x86_set_debugregs(vcpu
, &dbgregs
);
2524 static int kvm_vm_ioctl_set_tss_addr(struct kvm
*kvm
, unsigned long addr
)
2528 if (addr
> (unsigned int)(-3 * PAGE_SIZE
))
2530 ret
= kvm_x86_ops
->set_tss_addr(kvm
, addr
);
2534 static int kvm_vm_ioctl_set_identity_map_addr(struct kvm
*kvm
,
2537 kvm
->arch
.ept_identity_map_addr
= ident_addr
;
2541 static int kvm_vm_ioctl_set_nr_mmu_pages(struct kvm
*kvm
,
2542 u32 kvm_nr_mmu_pages
)
2544 if (kvm_nr_mmu_pages
< KVM_MIN_ALLOC_MMU_PAGES
)
2547 mutex_lock(&kvm
->slots_lock
);
2548 spin_lock(&kvm
->mmu_lock
);
2550 kvm_mmu_change_mmu_pages(kvm
, kvm_nr_mmu_pages
);
2551 kvm
->arch
.n_requested_mmu_pages
= kvm_nr_mmu_pages
;
2553 spin_unlock(&kvm
->mmu_lock
);
2554 mutex_unlock(&kvm
->slots_lock
);
2558 static int kvm_vm_ioctl_get_nr_mmu_pages(struct kvm
*kvm
)
2560 return kvm
->arch
.n_alloc_mmu_pages
;
2563 gfn_t
unalias_gfn_instantiation(struct kvm
*kvm
, gfn_t gfn
)
2566 struct kvm_mem_alias
*alias
;
2567 struct kvm_mem_aliases
*aliases
;
2569 aliases
= kvm_aliases(kvm
);
2571 for (i
= 0; i
< aliases
->naliases
; ++i
) {
2572 alias
= &aliases
->aliases
[i
];
2573 if (alias
->flags
& KVM_ALIAS_INVALID
)
2575 if (gfn
>= alias
->base_gfn
2576 && gfn
< alias
->base_gfn
+ alias
->npages
)
2577 return alias
->target_gfn
+ gfn
- alias
->base_gfn
;
2582 gfn_t
unalias_gfn(struct kvm
*kvm
, gfn_t gfn
)
2585 struct kvm_mem_alias
*alias
;
2586 struct kvm_mem_aliases
*aliases
;
2588 aliases
= kvm_aliases(kvm
);
2590 for (i
= 0; i
< aliases
->naliases
; ++i
) {
2591 alias
= &aliases
->aliases
[i
];
2592 if (gfn
>= alias
->base_gfn
2593 && gfn
< alias
->base_gfn
+ alias
->npages
)
2594 return alias
->target_gfn
+ gfn
- alias
->base_gfn
;
2600 * Set a new alias region. Aliases map a portion of physical memory into
2601 * another portion. This is useful for memory windows, for example the PC
2604 static int kvm_vm_ioctl_set_memory_alias(struct kvm
*kvm
,
2605 struct kvm_memory_alias
*alias
)
2608 struct kvm_mem_alias
*p
;
2609 struct kvm_mem_aliases
*aliases
, *old_aliases
;
2612 /* General sanity checks */
2613 if (alias
->memory_size
& (PAGE_SIZE
- 1))
2615 if (alias
->guest_phys_addr
& (PAGE_SIZE
- 1))
2617 if (alias
->slot
>= KVM_ALIAS_SLOTS
)
2619 if (alias
->guest_phys_addr
+ alias
->memory_size
2620 < alias
->guest_phys_addr
)
2622 if (alias
->target_phys_addr
+ alias
->memory_size
2623 < alias
->target_phys_addr
)
2627 aliases
= kzalloc(sizeof(struct kvm_mem_aliases
), GFP_KERNEL
);
2631 mutex_lock(&kvm
->slots_lock
);
2633 /* invalidate any gfn reference in case of deletion/shrinking */
2634 memcpy(aliases
, kvm
->arch
.aliases
, sizeof(struct kvm_mem_aliases
));
2635 aliases
->aliases
[alias
->slot
].flags
|= KVM_ALIAS_INVALID
;
2636 old_aliases
= kvm
->arch
.aliases
;
2637 rcu_assign_pointer(kvm
->arch
.aliases
, aliases
);
2638 synchronize_srcu_expedited(&kvm
->srcu
);
2639 kvm_mmu_zap_all(kvm
);
2643 aliases
= kzalloc(sizeof(struct kvm_mem_aliases
), GFP_KERNEL
);
2647 memcpy(aliases
, kvm
->arch
.aliases
, sizeof(struct kvm_mem_aliases
));
2649 p
= &aliases
->aliases
[alias
->slot
];
2650 p
->base_gfn
= alias
->guest_phys_addr
>> PAGE_SHIFT
;
2651 p
->npages
= alias
->memory_size
>> PAGE_SHIFT
;
2652 p
->target_gfn
= alias
->target_phys_addr
>> PAGE_SHIFT
;
2653 p
->flags
&= ~(KVM_ALIAS_INVALID
);
2655 for (n
= KVM_ALIAS_SLOTS
; n
> 0; --n
)
2656 if (aliases
->aliases
[n
- 1].npages
)
2658 aliases
->naliases
= n
;
2660 old_aliases
= kvm
->arch
.aliases
;
2661 rcu_assign_pointer(kvm
->arch
.aliases
, aliases
);
2662 synchronize_srcu_expedited(&kvm
->srcu
);
2667 mutex_unlock(&kvm
->slots_lock
);
2672 static int kvm_vm_ioctl_get_irqchip(struct kvm
*kvm
, struct kvm_irqchip
*chip
)
2677 switch (chip
->chip_id
) {
2678 case KVM_IRQCHIP_PIC_MASTER
:
2679 memcpy(&chip
->chip
.pic
,
2680 &pic_irqchip(kvm
)->pics
[0],
2681 sizeof(struct kvm_pic_state
));
2683 case KVM_IRQCHIP_PIC_SLAVE
:
2684 memcpy(&chip
->chip
.pic
,
2685 &pic_irqchip(kvm
)->pics
[1],
2686 sizeof(struct kvm_pic_state
));
2688 case KVM_IRQCHIP_IOAPIC
:
2689 r
= kvm_get_ioapic(kvm
, &chip
->chip
.ioapic
);
2698 static int kvm_vm_ioctl_set_irqchip(struct kvm
*kvm
, struct kvm_irqchip
*chip
)
2703 switch (chip
->chip_id
) {
2704 case KVM_IRQCHIP_PIC_MASTER
:
2705 raw_spin_lock(&pic_irqchip(kvm
)->lock
);
2706 memcpy(&pic_irqchip(kvm
)->pics
[0],
2708 sizeof(struct kvm_pic_state
));
2709 raw_spin_unlock(&pic_irqchip(kvm
)->lock
);
2711 case KVM_IRQCHIP_PIC_SLAVE
:
2712 raw_spin_lock(&pic_irqchip(kvm
)->lock
);
2713 memcpy(&pic_irqchip(kvm
)->pics
[1],
2715 sizeof(struct kvm_pic_state
));
2716 raw_spin_unlock(&pic_irqchip(kvm
)->lock
);
2718 case KVM_IRQCHIP_IOAPIC
:
2719 r
= kvm_set_ioapic(kvm
, &chip
->chip
.ioapic
);
2725 kvm_pic_update_irq(pic_irqchip(kvm
));
2729 static int kvm_vm_ioctl_get_pit(struct kvm
*kvm
, struct kvm_pit_state
*ps
)
2733 mutex_lock(&kvm
->arch
.vpit
->pit_state
.lock
);
2734 memcpy(ps
, &kvm
->arch
.vpit
->pit_state
, sizeof(struct kvm_pit_state
));
2735 mutex_unlock(&kvm
->arch
.vpit
->pit_state
.lock
);
2739 static int kvm_vm_ioctl_set_pit(struct kvm
*kvm
, struct kvm_pit_state
*ps
)
2743 mutex_lock(&kvm
->arch
.vpit
->pit_state
.lock
);
2744 memcpy(&kvm
->arch
.vpit
->pit_state
, ps
, sizeof(struct kvm_pit_state
));
2745 kvm_pit_load_count(kvm
, 0, ps
->channels
[0].count
, 0);
2746 mutex_unlock(&kvm
->arch
.vpit
->pit_state
.lock
);
2750 static int kvm_vm_ioctl_get_pit2(struct kvm
*kvm
, struct kvm_pit_state2
*ps
)
2754 mutex_lock(&kvm
->arch
.vpit
->pit_state
.lock
);
2755 memcpy(ps
->channels
, &kvm
->arch
.vpit
->pit_state
.channels
,
2756 sizeof(ps
->channels
));
2757 ps
->flags
= kvm
->arch
.vpit
->pit_state
.flags
;
2758 mutex_unlock(&kvm
->arch
.vpit
->pit_state
.lock
);
2762 static int kvm_vm_ioctl_set_pit2(struct kvm
*kvm
, struct kvm_pit_state2
*ps
)
2764 int r
= 0, start
= 0;
2765 u32 prev_legacy
, cur_legacy
;
2766 mutex_lock(&kvm
->arch
.vpit
->pit_state
.lock
);
2767 prev_legacy
= kvm
->arch
.vpit
->pit_state
.flags
& KVM_PIT_FLAGS_HPET_LEGACY
;
2768 cur_legacy
= ps
->flags
& KVM_PIT_FLAGS_HPET_LEGACY
;
2769 if (!prev_legacy
&& cur_legacy
)
2771 memcpy(&kvm
->arch
.vpit
->pit_state
.channels
, &ps
->channels
,
2772 sizeof(kvm
->arch
.vpit
->pit_state
.channels
));
2773 kvm
->arch
.vpit
->pit_state
.flags
= ps
->flags
;
2774 kvm_pit_load_count(kvm
, 0, kvm
->arch
.vpit
->pit_state
.channels
[0].count
, start
);
2775 mutex_unlock(&kvm
->arch
.vpit
->pit_state
.lock
);
2779 static int kvm_vm_ioctl_reinject(struct kvm
*kvm
,
2780 struct kvm_reinject_control
*control
)
2782 if (!kvm
->arch
.vpit
)
2784 mutex_lock(&kvm
->arch
.vpit
->pit_state
.lock
);
2785 kvm
->arch
.vpit
->pit_state
.pit_timer
.reinject
= control
->pit_reinject
;
2786 mutex_unlock(&kvm
->arch
.vpit
->pit_state
.lock
);
2791 * Get (and clear) the dirty memory log for a memory slot.
2793 int kvm_vm_ioctl_get_dirty_log(struct kvm
*kvm
,
2794 struct kvm_dirty_log
*log
)
2797 struct kvm_memory_slot
*memslot
;
2799 unsigned long is_dirty
= 0;
2801 mutex_lock(&kvm
->slots_lock
);
2804 if (log
->slot
>= KVM_MEMORY_SLOTS
)
2807 memslot
= &kvm
->memslots
->memslots
[log
->slot
];
2809 if (!memslot
->dirty_bitmap
)
2812 n
= kvm_dirty_bitmap_bytes(memslot
);
2814 for (i
= 0; !is_dirty
&& i
< n
/sizeof(long); i
++)
2815 is_dirty
= memslot
->dirty_bitmap
[i
];
2817 /* If nothing is dirty, don't bother messing with page tables. */
2819 struct kvm_memslots
*slots
, *old_slots
;
2820 unsigned long *dirty_bitmap
;
2822 spin_lock(&kvm
->mmu_lock
);
2823 kvm_mmu_slot_remove_write_access(kvm
, log
->slot
);
2824 spin_unlock(&kvm
->mmu_lock
);
2827 dirty_bitmap
= vmalloc(n
);
2830 memset(dirty_bitmap
, 0, n
);
2833 slots
= kzalloc(sizeof(struct kvm_memslots
), GFP_KERNEL
);
2835 vfree(dirty_bitmap
);
2838 memcpy(slots
, kvm
->memslots
, sizeof(struct kvm_memslots
));
2839 slots
->memslots
[log
->slot
].dirty_bitmap
= dirty_bitmap
;
2841 old_slots
= kvm
->memslots
;
2842 rcu_assign_pointer(kvm
->memslots
, slots
);
2843 synchronize_srcu_expedited(&kvm
->srcu
);
2844 dirty_bitmap
= old_slots
->memslots
[log
->slot
].dirty_bitmap
;
2848 if (copy_to_user(log
->dirty_bitmap
, dirty_bitmap
, n
)) {
2849 vfree(dirty_bitmap
);
2852 vfree(dirty_bitmap
);
2855 if (clear_user(log
->dirty_bitmap
, n
))
2861 mutex_unlock(&kvm
->slots_lock
);
2865 long kvm_arch_vm_ioctl(struct file
*filp
,
2866 unsigned int ioctl
, unsigned long arg
)
2868 struct kvm
*kvm
= filp
->private_data
;
2869 void __user
*argp
= (void __user
*)arg
;
2872 * This union makes it completely explicit to gcc-3.x
2873 * that these two variables' stack usage should be
2874 * combined, not added together.
2877 struct kvm_pit_state ps
;
2878 struct kvm_pit_state2 ps2
;
2879 struct kvm_memory_alias alias
;
2880 struct kvm_pit_config pit_config
;
2884 case KVM_SET_TSS_ADDR
:
2885 r
= kvm_vm_ioctl_set_tss_addr(kvm
, arg
);
2889 case KVM_SET_IDENTITY_MAP_ADDR
: {
2893 if (copy_from_user(&ident_addr
, argp
, sizeof ident_addr
))
2895 r
= kvm_vm_ioctl_set_identity_map_addr(kvm
, ident_addr
);
2900 case KVM_SET_MEMORY_REGION
: {
2901 struct kvm_memory_region kvm_mem
;
2902 struct kvm_userspace_memory_region kvm_userspace_mem
;
2905 if (copy_from_user(&kvm_mem
, argp
, sizeof kvm_mem
))
2907 kvm_userspace_mem
.slot
= kvm_mem
.slot
;
2908 kvm_userspace_mem
.flags
= kvm_mem
.flags
;
2909 kvm_userspace_mem
.guest_phys_addr
= kvm_mem
.guest_phys_addr
;
2910 kvm_userspace_mem
.memory_size
= kvm_mem
.memory_size
;
2911 r
= kvm_vm_ioctl_set_memory_region(kvm
, &kvm_userspace_mem
, 0);
2916 case KVM_SET_NR_MMU_PAGES
:
2917 r
= kvm_vm_ioctl_set_nr_mmu_pages(kvm
, arg
);
2921 case KVM_GET_NR_MMU_PAGES
:
2922 r
= kvm_vm_ioctl_get_nr_mmu_pages(kvm
);
2924 case KVM_SET_MEMORY_ALIAS
:
2926 if (copy_from_user(&u
.alias
, argp
, sizeof(struct kvm_memory_alias
)))
2928 r
= kvm_vm_ioctl_set_memory_alias(kvm
, &u
.alias
);
2932 case KVM_CREATE_IRQCHIP
: {
2933 struct kvm_pic
*vpic
;
2935 mutex_lock(&kvm
->lock
);
2938 goto create_irqchip_unlock
;
2940 vpic
= kvm_create_pic(kvm
);
2942 r
= kvm_ioapic_init(kvm
);
2944 kvm_io_bus_unregister_dev(kvm
, KVM_PIO_BUS
,
2947 goto create_irqchip_unlock
;
2950 goto create_irqchip_unlock
;
2952 kvm
->arch
.vpic
= vpic
;
2954 r
= kvm_setup_default_irq_routing(kvm
);
2956 mutex_lock(&kvm
->irq_lock
);
2957 kvm_ioapic_destroy(kvm
);
2958 kvm_destroy_pic(kvm
);
2959 mutex_unlock(&kvm
->irq_lock
);
2961 create_irqchip_unlock
:
2962 mutex_unlock(&kvm
->lock
);
2965 case KVM_CREATE_PIT
:
2966 u
.pit_config
.flags
= KVM_PIT_SPEAKER_DUMMY
;
2968 case KVM_CREATE_PIT2
:
2970 if (copy_from_user(&u
.pit_config
, argp
,
2971 sizeof(struct kvm_pit_config
)))
2974 mutex_lock(&kvm
->slots_lock
);
2977 goto create_pit_unlock
;
2979 kvm
->arch
.vpit
= kvm_create_pit(kvm
, u
.pit_config
.flags
);
2983 mutex_unlock(&kvm
->slots_lock
);
2985 case KVM_IRQ_LINE_STATUS
:
2986 case KVM_IRQ_LINE
: {
2987 struct kvm_irq_level irq_event
;
2990 if (copy_from_user(&irq_event
, argp
, sizeof irq_event
))
2993 if (irqchip_in_kernel(kvm
)) {
2995 status
= kvm_set_irq(kvm
, KVM_USERSPACE_IRQ_SOURCE_ID
,
2996 irq_event
.irq
, irq_event
.level
);
2997 if (ioctl
== KVM_IRQ_LINE_STATUS
) {
2999 irq_event
.status
= status
;
3000 if (copy_to_user(argp
, &irq_event
,
3008 case KVM_GET_IRQCHIP
: {
3009 /* 0: PIC master, 1: PIC slave, 2: IOAPIC */
3010 struct kvm_irqchip
*chip
= kmalloc(sizeof(*chip
), GFP_KERNEL
);
3016 if (copy_from_user(chip
, argp
, sizeof *chip
))
3017 goto get_irqchip_out
;
3019 if (!irqchip_in_kernel(kvm
))
3020 goto get_irqchip_out
;
3021 r
= kvm_vm_ioctl_get_irqchip(kvm
, chip
);
3023 goto get_irqchip_out
;
3025 if (copy_to_user(argp
, chip
, sizeof *chip
))
3026 goto get_irqchip_out
;
3034 case KVM_SET_IRQCHIP
: {
3035 /* 0: PIC master, 1: PIC slave, 2: IOAPIC */
3036 struct kvm_irqchip
*chip
= kmalloc(sizeof(*chip
), GFP_KERNEL
);
3042 if (copy_from_user(chip
, argp
, sizeof *chip
))
3043 goto set_irqchip_out
;
3045 if (!irqchip_in_kernel(kvm
))
3046 goto set_irqchip_out
;
3047 r
= kvm_vm_ioctl_set_irqchip(kvm
, chip
);
3049 goto set_irqchip_out
;
3059 if (copy_from_user(&u
.ps
, argp
, sizeof(struct kvm_pit_state
)))
3062 if (!kvm
->arch
.vpit
)
3064 r
= kvm_vm_ioctl_get_pit(kvm
, &u
.ps
);
3068 if (copy_to_user(argp
, &u
.ps
, sizeof(struct kvm_pit_state
)))
3075 if (copy_from_user(&u
.ps
, argp
, sizeof u
.ps
))
3078 if (!kvm
->arch
.vpit
)
3080 r
= kvm_vm_ioctl_set_pit(kvm
, &u
.ps
);
3086 case KVM_GET_PIT2
: {
3088 if (!kvm
->arch
.vpit
)
3090 r
= kvm_vm_ioctl_get_pit2(kvm
, &u
.ps2
);
3094 if (copy_to_user(argp
, &u
.ps2
, sizeof(u
.ps2
)))
3099 case KVM_SET_PIT2
: {
3101 if (copy_from_user(&u
.ps2
, argp
, sizeof(u
.ps2
)))
3104 if (!kvm
->arch
.vpit
)
3106 r
= kvm_vm_ioctl_set_pit2(kvm
, &u
.ps2
);
3112 case KVM_REINJECT_CONTROL
: {
3113 struct kvm_reinject_control control
;
3115 if (copy_from_user(&control
, argp
, sizeof(control
)))
3117 r
= kvm_vm_ioctl_reinject(kvm
, &control
);
3123 case KVM_XEN_HVM_CONFIG
: {
3125 if (copy_from_user(&kvm
->arch
.xen_hvm_config
, argp
,
3126 sizeof(struct kvm_xen_hvm_config
)))
3129 if (kvm
->arch
.xen_hvm_config
.flags
)
3134 case KVM_SET_CLOCK
: {
3135 struct timespec now
;
3136 struct kvm_clock_data user_ns
;
3141 if (copy_from_user(&user_ns
, argp
, sizeof(user_ns
)))
3150 now_ns
= timespec_to_ns(&now
);
3151 delta
= user_ns
.clock
- now_ns
;
3152 kvm
->arch
.kvmclock_offset
= delta
;
3155 case KVM_GET_CLOCK
: {
3156 struct timespec now
;
3157 struct kvm_clock_data user_ns
;
3161 now_ns
= timespec_to_ns(&now
);
3162 user_ns
.clock
= kvm
->arch
.kvmclock_offset
+ now_ns
;
3166 if (copy_to_user(argp
, &user_ns
, sizeof(user_ns
)))
3179 static void kvm_init_msr_list(void)
3184 /* skip the first msrs in the list. KVM-specific */
3185 for (i
= j
= KVM_SAVE_MSRS_BEGIN
; i
< ARRAY_SIZE(msrs_to_save
); i
++) {
3186 if (rdmsr_safe(msrs_to_save
[i
], &dummy
[0], &dummy
[1]) < 0)
3189 msrs_to_save
[j
] = msrs_to_save
[i
];
3192 num_msrs_to_save
= j
;
3195 static int vcpu_mmio_write(struct kvm_vcpu
*vcpu
, gpa_t addr
, int len
,
3198 if (vcpu
->arch
.apic
&&
3199 !kvm_iodevice_write(&vcpu
->arch
.apic
->dev
, addr
, len
, v
))
3202 return kvm_io_bus_write(vcpu
->kvm
, KVM_MMIO_BUS
, addr
, len
, v
);
3205 static int vcpu_mmio_read(struct kvm_vcpu
*vcpu
, gpa_t addr
, int len
, void *v
)
3207 if (vcpu
->arch
.apic
&&
3208 !kvm_iodevice_read(&vcpu
->arch
.apic
->dev
, addr
, len
, v
))
3211 return kvm_io_bus_read(vcpu
->kvm
, KVM_MMIO_BUS
, addr
, len
, v
);
3214 static void kvm_set_segment(struct kvm_vcpu
*vcpu
,
3215 struct kvm_segment
*var
, int seg
)
3217 kvm_x86_ops
->set_segment(vcpu
, var
, seg
);
3220 void kvm_get_segment(struct kvm_vcpu
*vcpu
,
3221 struct kvm_segment
*var
, int seg
)
3223 kvm_x86_ops
->get_segment(vcpu
, var
, seg
);
3226 gpa_t
kvm_mmu_gva_to_gpa_read(struct kvm_vcpu
*vcpu
, gva_t gva
, u32
*error
)
3228 u32 access
= (kvm_x86_ops
->get_cpl(vcpu
) == 3) ? PFERR_USER_MASK
: 0;
3229 return vcpu
->arch
.mmu
.gva_to_gpa(vcpu
, gva
, access
, error
);
3232 gpa_t
kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu
*vcpu
, gva_t gva
, u32
*error
)
3234 u32 access
= (kvm_x86_ops
->get_cpl(vcpu
) == 3) ? PFERR_USER_MASK
: 0;
3235 access
|= PFERR_FETCH_MASK
;
3236 return vcpu
->arch
.mmu
.gva_to_gpa(vcpu
, gva
, access
, error
);
3239 gpa_t
kvm_mmu_gva_to_gpa_write(struct kvm_vcpu
*vcpu
, gva_t gva
, u32
*error
)
3241 u32 access
= (kvm_x86_ops
->get_cpl(vcpu
) == 3) ? PFERR_USER_MASK
: 0;
3242 access
|= PFERR_WRITE_MASK
;
3243 return vcpu
->arch
.mmu
.gva_to_gpa(vcpu
, gva
, access
, error
);
3246 /* uses this to access any guest's mapped memory without checking CPL */
3247 gpa_t
kvm_mmu_gva_to_gpa_system(struct kvm_vcpu
*vcpu
, gva_t gva
, u32
*error
)
3249 return vcpu
->arch
.mmu
.gva_to_gpa(vcpu
, gva
, 0, error
);
3252 static int kvm_read_guest_virt_helper(gva_t addr
, void *val
, unsigned int bytes
,
3253 struct kvm_vcpu
*vcpu
, u32 access
,
3257 int r
= X86EMUL_CONTINUE
;
3260 gpa_t gpa
= vcpu
->arch
.mmu
.gva_to_gpa(vcpu
, addr
, access
, error
);
3261 unsigned offset
= addr
& (PAGE_SIZE
-1);
3262 unsigned toread
= min(bytes
, (unsigned)PAGE_SIZE
- offset
);
3265 if (gpa
== UNMAPPED_GVA
) {
3266 r
= X86EMUL_PROPAGATE_FAULT
;
3269 ret
= kvm_read_guest(vcpu
->kvm
, gpa
, data
, toread
);
3271 r
= X86EMUL_UNHANDLEABLE
;
3283 /* used for instruction fetching */
3284 static int kvm_fetch_guest_virt(gva_t addr
, void *val
, unsigned int bytes
,
3285 struct kvm_vcpu
*vcpu
, u32
*error
)
3287 u32 access
= (kvm_x86_ops
->get_cpl(vcpu
) == 3) ? PFERR_USER_MASK
: 0;
3288 return kvm_read_guest_virt_helper(addr
, val
, bytes
, vcpu
,
3289 access
| PFERR_FETCH_MASK
, error
);
3292 static int kvm_read_guest_virt(gva_t addr
, void *val
, unsigned int bytes
,
3293 struct kvm_vcpu
*vcpu
, u32
*error
)
3295 u32 access
= (kvm_x86_ops
->get_cpl(vcpu
) == 3) ? PFERR_USER_MASK
: 0;
3296 return kvm_read_guest_virt_helper(addr
, val
, bytes
, vcpu
, access
,
3300 static int kvm_read_guest_virt_system(gva_t addr
, void *val
, unsigned int bytes
,
3301 struct kvm_vcpu
*vcpu
, u32
*error
)
3303 return kvm_read_guest_virt_helper(addr
, val
, bytes
, vcpu
, 0, error
);
3306 static int kvm_write_guest_virt_system(gva_t addr
, void *val
,
3308 struct kvm_vcpu
*vcpu
,
3312 int r
= X86EMUL_CONTINUE
;
3315 gpa_t gpa
= vcpu
->arch
.mmu
.gva_to_gpa(vcpu
, addr
,
3316 PFERR_WRITE_MASK
, error
);
3317 unsigned offset
= addr
& (PAGE_SIZE
-1);
3318 unsigned towrite
= min(bytes
, (unsigned)PAGE_SIZE
- offset
);
3321 if (gpa
== UNMAPPED_GVA
) {
3322 r
= X86EMUL_PROPAGATE_FAULT
;
3325 ret
= kvm_write_guest(vcpu
->kvm
, gpa
, data
, towrite
);
3327 r
= X86EMUL_UNHANDLEABLE
;
3339 static int emulator_read_emulated(unsigned long addr
,
3342 struct kvm_vcpu
*vcpu
)
3347 if (vcpu
->mmio_read_completed
) {
3348 memcpy(val
, vcpu
->mmio_data
, bytes
);
3349 trace_kvm_mmio(KVM_TRACE_MMIO_READ
, bytes
,
3350 vcpu
->mmio_phys_addr
, *(u64
*)val
);
3351 vcpu
->mmio_read_completed
= 0;
3352 return X86EMUL_CONTINUE
;
3355 gpa
= kvm_mmu_gva_to_gpa_read(vcpu
, addr
, &error_code
);
3357 if (gpa
== UNMAPPED_GVA
) {
3358 kvm_inject_page_fault(vcpu
, addr
, error_code
);
3359 return X86EMUL_PROPAGATE_FAULT
;
3362 /* For APIC access vmexit */
3363 if ((gpa
& PAGE_MASK
) == APIC_DEFAULT_PHYS_BASE
)
3366 if (kvm_read_guest_virt(addr
, val
, bytes
, vcpu
, NULL
)
3367 == X86EMUL_CONTINUE
)
3368 return X86EMUL_CONTINUE
;
3372 * Is this MMIO handled locally?
3374 if (!vcpu_mmio_read(vcpu
, gpa
, bytes
, val
)) {
3375 trace_kvm_mmio(KVM_TRACE_MMIO_READ
, bytes
, gpa
, *(u64
*)val
);
3376 return X86EMUL_CONTINUE
;
3379 trace_kvm_mmio(KVM_TRACE_MMIO_READ_UNSATISFIED
, bytes
, gpa
, 0);
3381 vcpu
->mmio_needed
= 1;
3382 vcpu
->mmio_phys_addr
= gpa
;
3383 vcpu
->mmio_size
= bytes
;
3384 vcpu
->mmio_is_write
= 0;
3386 return X86EMUL_UNHANDLEABLE
;
3389 int emulator_write_phys(struct kvm_vcpu
*vcpu
, gpa_t gpa
,
3390 const void *val
, int bytes
)
3394 ret
= kvm_write_guest(vcpu
->kvm
, gpa
, val
, bytes
);
3397 kvm_mmu_pte_write(vcpu
, gpa
, val
, bytes
, 1);
3401 static int emulator_write_emulated_onepage(unsigned long addr
,
3404 struct kvm_vcpu
*vcpu
)
3409 gpa
= kvm_mmu_gva_to_gpa_write(vcpu
, addr
, &error_code
);
3411 if (gpa
== UNMAPPED_GVA
) {
3412 kvm_inject_page_fault(vcpu
, addr
, error_code
);
3413 return X86EMUL_PROPAGATE_FAULT
;
3416 /* For APIC access vmexit */
3417 if ((gpa
& PAGE_MASK
) == APIC_DEFAULT_PHYS_BASE
)
3420 if (emulator_write_phys(vcpu
, gpa
, val
, bytes
))
3421 return X86EMUL_CONTINUE
;
3424 trace_kvm_mmio(KVM_TRACE_MMIO_WRITE
, bytes
, gpa
, *(u64
*)val
);
3426 * Is this MMIO handled locally?
3428 if (!vcpu_mmio_write(vcpu
, gpa
, bytes
, val
))
3429 return X86EMUL_CONTINUE
;
3431 vcpu
->mmio_needed
= 1;
3432 vcpu
->mmio_phys_addr
= gpa
;
3433 vcpu
->mmio_size
= bytes
;
3434 vcpu
->mmio_is_write
= 1;
3435 memcpy(vcpu
->mmio_data
, val
, bytes
);
3437 return X86EMUL_CONTINUE
;
3440 int emulator_write_emulated(unsigned long addr
,
3443 struct kvm_vcpu
*vcpu
)
3445 /* Crossing a page boundary? */
3446 if (((addr
+ bytes
- 1) ^ addr
) & PAGE_MASK
) {
3449 now
= -addr
& ~PAGE_MASK
;
3450 rc
= emulator_write_emulated_onepage(addr
, val
, now
, vcpu
);
3451 if (rc
!= X86EMUL_CONTINUE
)
3457 return emulator_write_emulated_onepage(addr
, val
, bytes
, vcpu
);
3459 EXPORT_SYMBOL_GPL(emulator_write_emulated
);
3461 #define CMPXCHG_TYPE(t, ptr, old, new) \
3462 (cmpxchg((t *)(ptr), *(t *)(old), *(t *)(new)) == *(t *)(old))
3464 #ifdef CONFIG_X86_64
3465 # define CMPXCHG64(ptr, old, new) CMPXCHG_TYPE(u64, ptr, old, new)
3467 # define CMPXCHG64(ptr, old, new) \
3468 (cmpxchg64((u64 *)(ptr), *(u64 *)(old), *(u64 *)(new)) == *(u64 *)(old))
3471 static int emulator_cmpxchg_emulated(unsigned long addr
,
3475 struct kvm_vcpu
*vcpu
)
3482 /* guests cmpxchg8b have to be emulated atomically */
3483 if (bytes
> 8 || (bytes
& (bytes
- 1)))
3486 gpa
= kvm_mmu_gva_to_gpa_write(vcpu
, addr
, NULL
);
3488 if (gpa
== UNMAPPED_GVA
||
3489 (gpa
& PAGE_MASK
) == APIC_DEFAULT_PHYS_BASE
)
3492 if (((gpa
+ bytes
- 1) & PAGE_MASK
) != (gpa
& PAGE_MASK
))
3495 page
= gfn_to_page(vcpu
->kvm
, gpa
>> PAGE_SHIFT
);
3497 kaddr
= kmap_atomic(page
, KM_USER0
);
3498 kaddr
+= offset_in_page(gpa
);
3501 exchanged
= CMPXCHG_TYPE(u8
, kaddr
, old
, new);
3504 exchanged
= CMPXCHG_TYPE(u16
, kaddr
, old
, new);
3507 exchanged
= CMPXCHG_TYPE(u32
, kaddr
, old
, new);
3510 exchanged
= CMPXCHG64(kaddr
, old
, new);
3515 kunmap_atomic(kaddr
, KM_USER0
);
3516 kvm_release_page_dirty(page
);
3519 return X86EMUL_CMPXCHG_FAILED
;
3521 kvm_mmu_pte_write(vcpu
, gpa
, new, bytes
, 1);
3523 return X86EMUL_CONTINUE
;
3526 printk_once(KERN_WARNING
"kvm: emulating exchange as write\n");
3528 return emulator_write_emulated(addr
, new, bytes
, vcpu
);
3531 static int kernel_pio(struct kvm_vcpu
*vcpu
, void *pd
)
3533 /* TODO: String I/O for in kernel device */
3536 if (vcpu
->arch
.pio
.in
)
3537 r
= kvm_io_bus_read(vcpu
->kvm
, KVM_PIO_BUS
, vcpu
->arch
.pio
.port
,
3538 vcpu
->arch
.pio
.size
, pd
);
3540 r
= kvm_io_bus_write(vcpu
->kvm
, KVM_PIO_BUS
,
3541 vcpu
->arch
.pio
.port
, vcpu
->arch
.pio
.size
,
3547 static int emulator_pio_in_emulated(int size
, unsigned short port
, void *val
,
3548 unsigned int count
, struct kvm_vcpu
*vcpu
)
3550 if (vcpu
->arch
.pio
.count
)
3553 trace_kvm_pio(1, port
, size
, 1);
3555 vcpu
->arch
.pio
.port
= port
;
3556 vcpu
->arch
.pio
.in
= 1;
3557 vcpu
->arch
.pio
.count
= count
;
3558 vcpu
->arch
.pio
.size
= size
;
3560 if (!kernel_pio(vcpu
, vcpu
->arch
.pio_data
)) {
3562 memcpy(val
, vcpu
->arch
.pio_data
, size
* count
);
3563 vcpu
->arch
.pio
.count
= 0;
3567 vcpu
->run
->exit_reason
= KVM_EXIT_IO
;
3568 vcpu
->run
->io
.direction
= KVM_EXIT_IO_IN
;
3569 vcpu
->run
->io
.size
= size
;
3570 vcpu
->run
->io
.data_offset
= KVM_PIO_PAGE_OFFSET
* PAGE_SIZE
;
3571 vcpu
->run
->io
.count
= count
;
3572 vcpu
->run
->io
.port
= port
;
3577 static int emulator_pio_out_emulated(int size
, unsigned short port
,
3578 const void *val
, unsigned int count
,
3579 struct kvm_vcpu
*vcpu
)
3581 trace_kvm_pio(0, port
, size
, 1);
3583 vcpu
->arch
.pio
.port
= port
;
3584 vcpu
->arch
.pio
.in
= 0;
3585 vcpu
->arch
.pio
.count
= count
;
3586 vcpu
->arch
.pio
.size
= size
;
3588 memcpy(vcpu
->arch
.pio_data
, val
, size
* count
);
3590 if (!kernel_pio(vcpu
, vcpu
->arch
.pio_data
)) {
3591 vcpu
->arch
.pio
.count
= 0;
3595 vcpu
->run
->exit_reason
= KVM_EXIT_IO
;
3596 vcpu
->run
->io
.direction
= KVM_EXIT_IO_OUT
;
3597 vcpu
->run
->io
.size
= size
;
3598 vcpu
->run
->io
.data_offset
= KVM_PIO_PAGE_OFFSET
* PAGE_SIZE
;
3599 vcpu
->run
->io
.count
= count
;
3600 vcpu
->run
->io
.port
= port
;
3605 static unsigned long get_segment_base(struct kvm_vcpu
*vcpu
, int seg
)
3607 return kvm_x86_ops
->get_segment_base(vcpu
, seg
);
3610 int emulate_invlpg(struct kvm_vcpu
*vcpu
, gva_t address
)
3612 kvm_mmu_invlpg(vcpu
, address
);
3613 return X86EMUL_CONTINUE
;
3616 int emulate_clts(struct kvm_vcpu
*vcpu
)
3618 kvm_x86_ops
->set_cr0(vcpu
, kvm_read_cr0_bits(vcpu
, ~X86_CR0_TS
));
3619 kvm_x86_ops
->fpu_activate(vcpu
);
3620 return X86EMUL_CONTINUE
;
3623 int emulator_get_dr(int dr
, unsigned long *dest
, struct kvm_vcpu
*vcpu
)
3625 return kvm_get_dr(vcpu
, dr
, dest
);
3628 int emulator_set_dr(int dr
, unsigned long value
, struct kvm_vcpu
*vcpu
)
3630 return kvm_set_dr(vcpu
, dr
, value
);
3633 void kvm_report_emulation_failure(struct kvm_vcpu
*vcpu
, const char *context
)
3636 unsigned long rip
= kvm_rip_read(vcpu
);
3637 unsigned long rip_linear
;
3639 if (!printk_ratelimit())
3642 rip_linear
= rip
+ get_segment_base(vcpu
, VCPU_SREG_CS
);
3644 kvm_read_guest_virt(rip_linear
, (void *)opcodes
, 4, vcpu
, NULL
);
3646 printk(KERN_ERR
"emulation failed (%s) rip %lx %02x %02x %02x %02x\n",
3647 context
, rip
, opcodes
[0], opcodes
[1], opcodes
[2], opcodes
[3]);
3649 EXPORT_SYMBOL_GPL(kvm_report_emulation_failure
);
3651 static u64
mk_cr_64(u64 curr_cr
, u32 new_val
)
3653 return (curr_cr
& ~((1ULL << 32) - 1)) | new_val
;
3656 static unsigned long emulator_get_cr(int cr
, struct kvm_vcpu
*vcpu
)
3658 unsigned long value
;
3662 value
= kvm_read_cr0(vcpu
);
3665 value
= vcpu
->arch
.cr2
;
3668 value
= vcpu
->arch
.cr3
;
3671 value
= kvm_read_cr4(vcpu
);
3674 value
= kvm_get_cr8(vcpu
);
3677 vcpu_printf(vcpu
, "%s: unexpected cr %u\n", __func__
, cr
);
3684 static void emulator_set_cr(int cr
, unsigned long val
, struct kvm_vcpu
*vcpu
)
3688 kvm_set_cr0(vcpu
, mk_cr_64(kvm_read_cr0(vcpu
), val
));
3691 vcpu
->arch
.cr2
= val
;
3694 kvm_set_cr3(vcpu
, val
);
3697 kvm_set_cr4(vcpu
, mk_cr_64(kvm_read_cr4(vcpu
), val
));
3700 kvm_set_cr8(vcpu
, val
& 0xfUL
);
3703 vcpu_printf(vcpu
, "%s: unexpected cr %u\n", __func__
, cr
);
3707 static int emulator_get_cpl(struct kvm_vcpu
*vcpu
)
3709 return kvm_x86_ops
->get_cpl(vcpu
);
3712 static void emulator_get_gdt(struct desc_ptr
*dt
, struct kvm_vcpu
*vcpu
)
3714 kvm_x86_ops
->get_gdt(vcpu
, dt
);
3717 static bool emulator_get_cached_descriptor(struct desc_struct
*desc
, int seg
,
3718 struct kvm_vcpu
*vcpu
)
3720 struct kvm_segment var
;
3722 kvm_get_segment(vcpu
, &var
, seg
);
3729 set_desc_limit(desc
, var
.limit
);
3730 set_desc_base(desc
, (unsigned long)var
.base
);
3731 desc
->type
= var
.type
;
3733 desc
->dpl
= var
.dpl
;
3734 desc
->p
= var
.present
;
3735 desc
->avl
= var
.avl
;
3743 static void emulator_set_cached_descriptor(struct desc_struct
*desc
, int seg
,
3744 struct kvm_vcpu
*vcpu
)
3746 struct kvm_segment var
;
3748 /* needed to preserve selector */
3749 kvm_get_segment(vcpu
, &var
, seg
);
3751 var
.base
= get_desc_base(desc
);
3752 var
.limit
= get_desc_limit(desc
);
3754 var
.limit
= (var
.limit
<< 12) | 0xfff;
3755 var
.type
= desc
->type
;
3756 var
.present
= desc
->p
;
3757 var
.dpl
= desc
->dpl
;
3762 var
.avl
= desc
->avl
;
3763 var
.present
= desc
->p
;
3764 var
.unusable
= !var
.present
;
3767 kvm_set_segment(vcpu
, &var
, seg
);
3771 static u16
emulator_get_segment_selector(int seg
, struct kvm_vcpu
*vcpu
)
3773 struct kvm_segment kvm_seg
;
3775 kvm_get_segment(vcpu
, &kvm_seg
, seg
);
3776 return kvm_seg
.selector
;
3779 static void emulator_set_segment_selector(u16 sel
, int seg
,
3780 struct kvm_vcpu
*vcpu
)
3782 struct kvm_segment kvm_seg
;
3784 kvm_get_segment(vcpu
, &kvm_seg
, seg
);
3785 kvm_seg
.selector
= sel
;
3786 kvm_set_segment(vcpu
, &kvm_seg
, seg
);
3789 static void emulator_set_rflags(struct kvm_vcpu
*vcpu
, unsigned long rflags
)
3791 kvm_x86_ops
->set_rflags(vcpu
, rflags
);
3794 static struct x86_emulate_ops emulate_ops
= {
3795 .read_std
= kvm_read_guest_virt_system
,
3796 .write_std
= kvm_write_guest_virt_system
,
3797 .fetch
= kvm_fetch_guest_virt
,
3798 .read_emulated
= emulator_read_emulated
,
3799 .write_emulated
= emulator_write_emulated
,
3800 .cmpxchg_emulated
= emulator_cmpxchg_emulated
,
3801 .pio_in_emulated
= emulator_pio_in_emulated
,
3802 .pio_out_emulated
= emulator_pio_out_emulated
,
3803 .get_cached_descriptor
= emulator_get_cached_descriptor
,
3804 .set_cached_descriptor
= emulator_set_cached_descriptor
,
3805 .get_segment_selector
= emulator_get_segment_selector
,
3806 .set_segment_selector
= emulator_set_segment_selector
,
3807 .get_gdt
= emulator_get_gdt
,
3808 .get_cr
= emulator_get_cr
,
3809 .set_cr
= emulator_set_cr
,
3810 .cpl
= emulator_get_cpl
,
3811 .set_rflags
= emulator_set_rflags
,
3812 .get_dr
= emulator_get_dr
,
3813 .set_dr
= emulator_set_dr
,
3814 .set_msr
= kvm_set_msr
,
3815 .get_msr
= kvm_get_msr
,
3818 static void cache_all_regs(struct kvm_vcpu
*vcpu
)
3820 kvm_register_read(vcpu
, VCPU_REGS_RAX
);
3821 kvm_register_read(vcpu
, VCPU_REGS_RSP
);
3822 kvm_register_read(vcpu
, VCPU_REGS_RIP
);
3823 vcpu
->arch
.regs_dirty
= ~0;
3826 int emulate_instruction(struct kvm_vcpu
*vcpu
,
3832 struct decode_cache
*c
;
3833 struct kvm_run
*run
= vcpu
->run
;
3835 kvm_clear_exception_queue(vcpu
);
3836 vcpu
->arch
.mmio_fault_cr2
= cr2
;
3838 * TODO: fix emulate.c to use guest_read/write_register
3839 * instead of direct ->regs accesses, can save hundred cycles
3840 * on Intel for instructions that don't read/change RSP, for
3843 cache_all_regs(vcpu
);
3845 vcpu
->mmio_is_write
= 0;
3847 if (!(emulation_type
& EMULTYPE_NO_DECODE
)) {
3849 kvm_x86_ops
->get_cs_db_l_bits(vcpu
, &cs_db
, &cs_l
);
3851 vcpu
->arch
.emulate_ctxt
.vcpu
= vcpu
;
3852 vcpu
->arch
.emulate_ctxt
.eflags
= kvm_x86_ops
->get_rflags(vcpu
);
3853 vcpu
->arch
.emulate_ctxt
.eip
= kvm_rip_read(vcpu
);
3854 vcpu
->arch
.emulate_ctxt
.mode
=
3855 (!is_protmode(vcpu
)) ? X86EMUL_MODE_REAL
:
3856 (vcpu
->arch
.emulate_ctxt
.eflags
& X86_EFLAGS_VM
)
3857 ? X86EMUL_MODE_VM86
: cs_l
3858 ? X86EMUL_MODE_PROT64
: cs_db
3859 ? X86EMUL_MODE_PROT32
: X86EMUL_MODE_PROT16
;
3861 r
= x86_decode_insn(&vcpu
->arch
.emulate_ctxt
, &emulate_ops
);
3862 trace_kvm_emulate_insn_start(vcpu
);
3864 /* Only allow emulation of specific instructions on #UD
3865 * (namely VMMCALL, sysenter, sysexit, syscall)*/
3866 c
= &vcpu
->arch
.emulate_ctxt
.decode
;
3867 if (emulation_type
& EMULTYPE_TRAP_UD
) {
3869 return EMULATE_FAIL
;
3871 case 0x01: /* VMMCALL */
3872 if (c
->modrm_mod
!= 3 || c
->modrm_rm
!= 1)
3873 return EMULATE_FAIL
;
3875 case 0x34: /* sysenter */
3876 case 0x35: /* sysexit */
3877 if (c
->modrm_mod
!= 0 || c
->modrm_rm
!= 0)
3878 return EMULATE_FAIL
;
3880 case 0x05: /* syscall */
3881 if (c
->modrm_mod
!= 0 || c
->modrm_rm
!= 0)
3882 return EMULATE_FAIL
;
3885 return EMULATE_FAIL
;
3888 if (!(c
->modrm_reg
== 0 || c
->modrm_reg
== 3))
3889 return EMULATE_FAIL
;
3892 ++vcpu
->stat
.insn_emulation
;
3894 ++vcpu
->stat
.insn_emulation_fail
;
3895 trace_kvm_emulate_insn_failed(vcpu
);
3896 if (kvm_mmu_unprotect_page_virt(vcpu
, cr2
))
3897 return EMULATE_DONE
;
3898 return EMULATE_FAIL
;
3902 if (emulation_type
& EMULTYPE_SKIP
) {
3903 kvm_rip_write(vcpu
, vcpu
->arch
.emulate_ctxt
.decode
.eip
);
3904 return EMULATE_DONE
;
3908 r
= x86_emulate_insn(&vcpu
->arch
.emulate_ctxt
, &emulate_ops
);
3909 shadow_mask
= vcpu
->arch
.emulate_ctxt
.interruptibility
;
3912 kvm_x86_ops
->set_interrupt_shadow(vcpu
, shadow_mask
);
3914 if (vcpu
->arch
.pio
.count
) {
3915 if (!vcpu
->arch
.pio
.in
)
3916 vcpu
->arch
.pio
.count
= 0;
3917 return EMULATE_DO_MMIO
;
3920 if (r
|| vcpu
->mmio_is_write
) {
3921 run
->exit_reason
= KVM_EXIT_MMIO
;
3922 run
->mmio
.phys_addr
= vcpu
->mmio_phys_addr
;
3923 memcpy(run
->mmio
.data
, vcpu
->mmio_data
, 8);
3924 run
->mmio
.len
= vcpu
->mmio_size
;
3925 run
->mmio
.is_write
= vcpu
->mmio_is_write
;
3929 if (kvm_mmu_unprotect_page_virt(vcpu
, cr2
))
3931 if (!vcpu
->mmio_needed
) {
3932 ++vcpu
->stat
.insn_emulation_fail
;
3933 trace_kvm_emulate_insn_failed(vcpu
);
3934 kvm_report_emulation_failure(vcpu
, "mmio");
3935 return EMULATE_FAIL
;
3937 return EMULATE_DO_MMIO
;
3940 if (vcpu
->mmio_is_write
) {
3941 vcpu
->mmio_needed
= 0;
3942 return EMULATE_DO_MMIO
;
3946 if (vcpu
->arch
.exception
.pending
)
3947 vcpu
->arch
.emulate_ctxt
.restart
= false;
3949 if (vcpu
->arch
.emulate_ctxt
.restart
)
3952 return EMULATE_DONE
;
3954 EXPORT_SYMBOL_GPL(emulate_instruction
);
3956 int kvm_fast_pio_out(struct kvm_vcpu
*vcpu
, int size
, unsigned short port
)
3958 unsigned long val
= kvm_register_read(vcpu
, VCPU_REGS_RAX
);
3959 int ret
= emulator_pio_out_emulated(size
, port
, &val
, 1, vcpu
);
3960 /* do not return to emulator after return from userspace */
3961 vcpu
->arch
.pio
.count
= 0;
3964 EXPORT_SYMBOL_GPL(kvm_fast_pio_out
);
3966 static void bounce_off(void *info
)
3971 static int kvmclock_cpufreq_notifier(struct notifier_block
*nb
, unsigned long val
,
3974 struct cpufreq_freqs
*freq
= data
;
3976 struct kvm_vcpu
*vcpu
;
3977 int i
, send_ipi
= 0;
3979 if (val
== CPUFREQ_PRECHANGE
&& freq
->old
> freq
->new)
3981 if (val
== CPUFREQ_POSTCHANGE
&& freq
->old
< freq
->new)
3983 per_cpu(cpu_tsc_khz
, freq
->cpu
) = freq
->new;
3985 spin_lock(&kvm_lock
);
3986 list_for_each_entry(kvm
, &vm_list
, vm_list
) {
3987 kvm_for_each_vcpu(i
, vcpu
, kvm
) {
3988 if (vcpu
->cpu
!= freq
->cpu
)
3990 if (!kvm_request_guest_time_update(vcpu
))
3992 if (vcpu
->cpu
!= smp_processor_id())
3996 spin_unlock(&kvm_lock
);
3998 if (freq
->old
< freq
->new && send_ipi
) {
4000 * We upscale the frequency. Must make the guest
4001 * doesn't see old kvmclock values while running with
4002 * the new frequency, otherwise we risk the guest sees
4003 * time go backwards.
4005 * In case we update the frequency for another cpu
4006 * (which might be in guest context) send an interrupt
4007 * to kick the cpu out of guest context. Next time
4008 * guest context is entered kvmclock will be updated,
4009 * so the guest will not see stale values.
4011 smp_call_function_single(freq
->cpu
, bounce_off
, NULL
, 1);
4016 static struct notifier_block kvmclock_cpufreq_notifier_block
= {
4017 .notifier_call
= kvmclock_cpufreq_notifier
4020 static void kvm_timer_init(void)
4024 if (!boot_cpu_has(X86_FEATURE_CONSTANT_TSC
)) {
4025 cpufreq_register_notifier(&kvmclock_cpufreq_notifier_block
,
4026 CPUFREQ_TRANSITION_NOTIFIER
);
4027 for_each_online_cpu(cpu
) {
4028 unsigned long khz
= cpufreq_get(cpu
);
4031 per_cpu(cpu_tsc_khz
, cpu
) = khz
;
4034 for_each_possible_cpu(cpu
)
4035 per_cpu(cpu_tsc_khz
, cpu
) = tsc_khz
;
4039 static DEFINE_PER_CPU(struct kvm_vcpu
*, current_vcpu
);
4041 static int kvm_is_in_guest(void)
4043 return percpu_read(current_vcpu
) != NULL
;
4046 static int kvm_is_user_mode(void)
4050 if (percpu_read(current_vcpu
))
4051 user_mode
= kvm_x86_ops
->get_cpl(percpu_read(current_vcpu
));
4053 return user_mode
!= 0;
4056 static unsigned long kvm_get_guest_ip(void)
4058 unsigned long ip
= 0;
4060 if (percpu_read(current_vcpu
))
4061 ip
= kvm_rip_read(percpu_read(current_vcpu
));
4066 static struct perf_guest_info_callbacks kvm_guest_cbs
= {
4067 .is_in_guest
= kvm_is_in_guest
,
4068 .is_user_mode
= kvm_is_user_mode
,
4069 .get_guest_ip
= kvm_get_guest_ip
,
4072 void kvm_before_handle_nmi(struct kvm_vcpu
*vcpu
)
4074 percpu_write(current_vcpu
, vcpu
);
4076 EXPORT_SYMBOL_GPL(kvm_before_handle_nmi
);
4078 void kvm_after_handle_nmi(struct kvm_vcpu
*vcpu
)
4080 percpu_write(current_vcpu
, NULL
);
4082 EXPORT_SYMBOL_GPL(kvm_after_handle_nmi
);
4084 int kvm_arch_init(void *opaque
)
4087 struct kvm_x86_ops
*ops
= (struct kvm_x86_ops
*)opaque
;
4090 printk(KERN_ERR
"kvm: already loaded the other module\n");
4095 if (!ops
->cpu_has_kvm_support()) {
4096 printk(KERN_ERR
"kvm: no hardware support\n");
4100 if (ops
->disabled_by_bios()) {
4101 printk(KERN_ERR
"kvm: disabled by bios\n");
4106 r
= kvm_mmu_module_init();
4110 kvm_init_msr_list();
4113 kvm_mmu_set_nonpresent_ptes(0ull, 0ull);
4114 kvm_mmu_set_base_ptes(PT_PRESENT_MASK
);
4115 kvm_mmu_set_mask_ptes(PT_USER_MASK
, PT_ACCESSED_MASK
,
4116 PT_DIRTY_MASK
, PT64_NX_MASK
, 0);
4120 perf_register_guest_info_callbacks(&kvm_guest_cbs
);
4128 void kvm_arch_exit(void)
4130 perf_unregister_guest_info_callbacks(&kvm_guest_cbs
);
4132 if (!boot_cpu_has(X86_FEATURE_CONSTANT_TSC
))
4133 cpufreq_unregister_notifier(&kvmclock_cpufreq_notifier_block
,
4134 CPUFREQ_TRANSITION_NOTIFIER
);
4136 kvm_mmu_module_exit();
4139 int kvm_emulate_halt(struct kvm_vcpu
*vcpu
)
4141 ++vcpu
->stat
.halt_exits
;
4142 if (irqchip_in_kernel(vcpu
->kvm
)) {
4143 vcpu
->arch
.mp_state
= KVM_MP_STATE_HALTED
;
4146 vcpu
->run
->exit_reason
= KVM_EXIT_HLT
;
4150 EXPORT_SYMBOL_GPL(kvm_emulate_halt
);
4152 static inline gpa_t
hc_gpa(struct kvm_vcpu
*vcpu
, unsigned long a0
,
4155 if (is_long_mode(vcpu
))
4158 return a0
| ((gpa_t
)a1
<< 32);
4161 int kvm_hv_hypercall(struct kvm_vcpu
*vcpu
)
4163 u64 param
, ingpa
, outgpa
, ret
;
4164 uint16_t code
, rep_idx
, rep_cnt
, res
= HV_STATUS_SUCCESS
, rep_done
= 0;
4165 bool fast
, longmode
;
4169 * hypercall generates UD from non zero cpl and real mode
4172 if (kvm_x86_ops
->get_cpl(vcpu
) != 0 || !is_protmode(vcpu
)) {
4173 kvm_queue_exception(vcpu
, UD_VECTOR
);
4177 kvm_x86_ops
->get_cs_db_l_bits(vcpu
, &cs_db
, &cs_l
);
4178 longmode
= is_long_mode(vcpu
) && cs_l
== 1;
4181 param
= ((u64
)kvm_register_read(vcpu
, VCPU_REGS_RDX
) << 32) |
4182 (kvm_register_read(vcpu
, VCPU_REGS_RAX
) & 0xffffffff);
4183 ingpa
= ((u64
)kvm_register_read(vcpu
, VCPU_REGS_RBX
) << 32) |
4184 (kvm_register_read(vcpu
, VCPU_REGS_RCX
) & 0xffffffff);
4185 outgpa
= ((u64
)kvm_register_read(vcpu
, VCPU_REGS_RDI
) << 32) |
4186 (kvm_register_read(vcpu
, VCPU_REGS_RSI
) & 0xffffffff);
4188 #ifdef CONFIG_X86_64
4190 param
= kvm_register_read(vcpu
, VCPU_REGS_RCX
);
4191 ingpa
= kvm_register_read(vcpu
, VCPU_REGS_RDX
);
4192 outgpa
= kvm_register_read(vcpu
, VCPU_REGS_R8
);
4196 code
= param
& 0xffff;
4197 fast
= (param
>> 16) & 0x1;
4198 rep_cnt
= (param
>> 32) & 0xfff;
4199 rep_idx
= (param
>> 48) & 0xfff;
4201 trace_kvm_hv_hypercall(code
, fast
, rep_cnt
, rep_idx
, ingpa
, outgpa
);
4204 case HV_X64_HV_NOTIFY_LONG_SPIN_WAIT
:
4205 kvm_vcpu_on_spin(vcpu
);
4208 res
= HV_STATUS_INVALID_HYPERCALL_CODE
;
4212 ret
= res
| (((u64
)rep_done
& 0xfff) << 32);
4214 kvm_register_write(vcpu
, VCPU_REGS_RAX
, ret
);
4216 kvm_register_write(vcpu
, VCPU_REGS_RDX
, ret
>> 32);
4217 kvm_register_write(vcpu
, VCPU_REGS_RAX
, ret
& 0xffffffff);
4223 int kvm_emulate_hypercall(struct kvm_vcpu
*vcpu
)
4225 unsigned long nr
, a0
, a1
, a2
, a3
, ret
;
4228 if (kvm_hv_hypercall_enabled(vcpu
->kvm
))
4229 return kvm_hv_hypercall(vcpu
);
4231 nr
= kvm_register_read(vcpu
, VCPU_REGS_RAX
);
4232 a0
= kvm_register_read(vcpu
, VCPU_REGS_RBX
);
4233 a1
= kvm_register_read(vcpu
, VCPU_REGS_RCX
);
4234 a2
= kvm_register_read(vcpu
, VCPU_REGS_RDX
);
4235 a3
= kvm_register_read(vcpu
, VCPU_REGS_RSI
);
4237 trace_kvm_hypercall(nr
, a0
, a1
, a2
, a3
);
4239 if (!is_long_mode(vcpu
)) {
4247 if (kvm_x86_ops
->get_cpl(vcpu
) != 0) {
4253 case KVM_HC_VAPIC_POLL_IRQ
:
4257 r
= kvm_pv_mmu_op(vcpu
, a0
, hc_gpa(vcpu
, a1
, a2
), &ret
);
4264 kvm_register_write(vcpu
, VCPU_REGS_RAX
, ret
);
4265 ++vcpu
->stat
.hypercalls
;
4268 EXPORT_SYMBOL_GPL(kvm_emulate_hypercall
);
4270 int kvm_fix_hypercall(struct kvm_vcpu
*vcpu
)
4272 char instruction
[3];
4273 unsigned long rip
= kvm_rip_read(vcpu
);
4276 * Blow out the MMU to ensure that no other VCPU has an active mapping
4277 * to ensure that the updated hypercall appears atomically across all
4280 kvm_mmu_zap_all(vcpu
->kvm
);
4282 kvm_x86_ops
->patch_hypercall(vcpu
, instruction
);
4284 return emulator_write_emulated(rip
, instruction
, 3, vcpu
);
4287 void realmode_lgdt(struct kvm_vcpu
*vcpu
, u16 limit
, unsigned long base
)
4289 struct desc_ptr dt
= { limit
, base
};
4291 kvm_x86_ops
->set_gdt(vcpu
, &dt
);
4294 void realmode_lidt(struct kvm_vcpu
*vcpu
, u16 limit
, unsigned long base
)
4296 struct desc_ptr dt
= { limit
, base
};
4298 kvm_x86_ops
->set_idt(vcpu
, &dt
);
4301 static int move_to_next_stateful_cpuid_entry(struct kvm_vcpu
*vcpu
, int i
)
4303 struct kvm_cpuid_entry2
*e
= &vcpu
->arch
.cpuid_entries
[i
];
4304 int j
, nent
= vcpu
->arch
.cpuid_nent
;
4306 e
->flags
&= ~KVM_CPUID_FLAG_STATE_READ_NEXT
;
4307 /* when no next entry is found, the current entry[i] is reselected */
4308 for (j
= i
+ 1; ; j
= (j
+ 1) % nent
) {
4309 struct kvm_cpuid_entry2
*ej
= &vcpu
->arch
.cpuid_entries
[j
];
4310 if (ej
->function
== e
->function
) {
4311 ej
->flags
|= KVM_CPUID_FLAG_STATE_READ_NEXT
;
4315 return 0; /* silence gcc, even though control never reaches here */
4318 /* find an entry with matching function, matching index (if needed), and that
4319 * should be read next (if it's stateful) */
4320 static int is_matching_cpuid_entry(struct kvm_cpuid_entry2
*e
,
4321 u32 function
, u32 index
)
4323 if (e
->function
!= function
)
4325 if ((e
->flags
& KVM_CPUID_FLAG_SIGNIFCANT_INDEX
) && e
->index
!= index
)
4327 if ((e
->flags
& KVM_CPUID_FLAG_STATEFUL_FUNC
) &&
4328 !(e
->flags
& KVM_CPUID_FLAG_STATE_READ_NEXT
))
4333 struct kvm_cpuid_entry2
*kvm_find_cpuid_entry(struct kvm_vcpu
*vcpu
,
4334 u32 function
, u32 index
)
4337 struct kvm_cpuid_entry2
*best
= NULL
;
4339 for (i
= 0; i
< vcpu
->arch
.cpuid_nent
; ++i
) {
4340 struct kvm_cpuid_entry2
*e
;
4342 e
= &vcpu
->arch
.cpuid_entries
[i
];
4343 if (is_matching_cpuid_entry(e
, function
, index
)) {
4344 if (e
->flags
& KVM_CPUID_FLAG_STATEFUL_FUNC
)
4345 move_to_next_stateful_cpuid_entry(vcpu
, i
);
4350 * Both basic or both extended?
4352 if (((e
->function
^ function
) & 0x80000000) == 0)
4353 if (!best
|| e
->function
> best
->function
)
4358 EXPORT_SYMBOL_GPL(kvm_find_cpuid_entry
);
4360 int cpuid_maxphyaddr(struct kvm_vcpu
*vcpu
)
4362 struct kvm_cpuid_entry2
*best
;
4364 best
= kvm_find_cpuid_entry(vcpu
, 0x80000000, 0);
4365 if (!best
|| best
->eax
< 0x80000008)
4367 best
= kvm_find_cpuid_entry(vcpu
, 0x80000008, 0);
4369 return best
->eax
& 0xff;
4374 void kvm_emulate_cpuid(struct kvm_vcpu
*vcpu
)
4376 u32 function
, index
;
4377 struct kvm_cpuid_entry2
*best
;
4379 function
= kvm_register_read(vcpu
, VCPU_REGS_RAX
);
4380 index
= kvm_register_read(vcpu
, VCPU_REGS_RCX
);
4381 kvm_register_write(vcpu
, VCPU_REGS_RAX
, 0);
4382 kvm_register_write(vcpu
, VCPU_REGS_RBX
, 0);
4383 kvm_register_write(vcpu
, VCPU_REGS_RCX
, 0);
4384 kvm_register_write(vcpu
, VCPU_REGS_RDX
, 0);
4385 best
= kvm_find_cpuid_entry(vcpu
, function
, index
);
4387 kvm_register_write(vcpu
, VCPU_REGS_RAX
, best
->eax
);
4388 kvm_register_write(vcpu
, VCPU_REGS_RBX
, best
->ebx
);
4389 kvm_register_write(vcpu
, VCPU_REGS_RCX
, best
->ecx
);
4390 kvm_register_write(vcpu
, VCPU_REGS_RDX
, best
->edx
);
4392 kvm_x86_ops
->skip_emulated_instruction(vcpu
);
4393 trace_kvm_cpuid(function
,
4394 kvm_register_read(vcpu
, VCPU_REGS_RAX
),
4395 kvm_register_read(vcpu
, VCPU_REGS_RBX
),
4396 kvm_register_read(vcpu
, VCPU_REGS_RCX
),
4397 kvm_register_read(vcpu
, VCPU_REGS_RDX
));
4399 EXPORT_SYMBOL_GPL(kvm_emulate_cpuid
);
4402 * Check if userspace requested an interrupt window, and that the
4403 * interrupt window is open.
4405 * No need to exit to userspace if we already have an interrupt queued.
4407 static int dm_request_for_irq_injection(struct kvm_vcpu
*vcpu
)
4409 return (!irqchip_in_kernel(vcpu
->kvm
) && !kvm_cpu_has_interrupt(vcpu
) &&
4410 vcpu
->run
->request_interrupt_window
&&
4411 kvm_arch_interrupt_allowed(vcpu
));
4414 static void post_kvm_run_save(struct kvm_vcpu
*vcpu
)
4416 struct kvm_run
*kvm_run
= vcpu
->run
;
4418 kvm_run
->if_flag
= (kvm_get_rflags(vcpu
) & X86_EFLAGS_IF
) != 0;
4419 kvm_run
->cr8
= kvm_get_cr8(vcpu
);
4420 kvm_run
->apic_base
= kvm_get_apic_base(vcpu
);
4421 if (irqchip_in_kernel(vcpu
->kvm
))
4422 kvm_run
->ready_for_interrupt_injection
= 1;
4424 kvm_run
->ready_for_interrupt_injection
=
4425 kvm_arch_interrupt_allowed(vcpu
) &&
4426 !kvm_cpu_has_interrupt(vcpu
) &&
4427 !kvm_event_needs_reinjection(vcpu
);
4430 static void vapic_enter(struct kvm_vcpu
*vcpu
)
4432 struct kvm_lapic
*apic
= vcpu
->arch
.apic
;
4435 if (!apic
|| !apic
->vapic_addr
)
4438 page
= gfn_to_page(vcpu
->kvm
, apic
->vapic_addr
>> PAGE_SHIFT
);
4440 vcpu
->arch
.apic
->vapic_page
= page
;
4443 static void vapic_exit(struct kvm_vcpu
*vcpu
)
4445 struct kvm_lapic
*apic
= vcpu
->arch
.apic
;
4448 if (!apic
|| !apic
->vapic_addr
)
4451 idx
= srcu_read_lock(&vcpu
->kvm
->srcu
);
4452 kvm_release_page_dirty(apic
->vapic_page
);
4453 mark_page_dirty(vcpu
->kvm
, apic
->vapic_addr
>> PAGE_SHIFT
);
4454 srcu_read_unlock(&vcpu
->kvm
->srcu
, idx
);
4457 static void update_cr8_intercept(struct kvm_vcpu
*vcpu
)
4461 if (!kvm_x86_ops
->update_cr8_intercept
)
4464 if (!vcpu
->arch
.apic
)
4467 if (!vcpu
->arch
.apic
->vapic_addr
)
4468 max_irr
= kvm_lapic_find_highest_irr(vcpu
);
4475 tpr
= kvm_lapic_get_cr8(vcpu
);
4477 kvm_x86_ops
->update_cr8_intercept(vcpu
, tpr
, max_irr
);
4480 static void inject_pending_event(struct kvm_vcpu
*vcpu
)
4482 /* try to reinject previous events if any */
4483 if (vcpu
->arch
.exception
.pending
) {
4484 trace_kvm_inj_exception(vcpu
->arch
.exception
.nr
,
4485 vcpu
->arch
.exception
.has_error_code
,
4486 vcpu
->arch
.exception
.error_code
);
4487 kvm_x86_ops
->queue_exception(vcpu
, vcpu
->arch
.exception
.nr
,
4488 vcpu
->arch
.exception
.has_error_code
,
4489 vcpu
->arch
.exception
.error_code
,
4490 vcpu
->arch
.exception
.reinject
);
4494 if (vcpu
->arch
.nmi_injected
) {
4495 kvm_x86_ops
->set_nmi(vcpu
);
4499 if (vcpu
->arch
.interrupt
.pending
) {
4500 kvm_x86_ops
->set_irq(vcpu
);
4504 /* try to inject new event if pending */
4505 if (vcpu
->arch
.nmi_pending
) {
4506 if (kvm_x86_ops
->nmi_allowed(vcpu
)) {
4507 vcpu
->arch
.nmi_pending
= false;
4508 vcpu
->arch
.nmi_injected
= true;
4509 kvm_x86_ops
->set_nmi(vcpu
);
4511 } else if (kvm_cpu_has_interrupt(vcpu
)) {
4512 if (kvm_x86_ops
->interrupt_allowed(vcpu
)) {
4513 kvm_queue_interrupt(vcpu
, kvm_cpu_get_interrupt(vcpu
),
4515 kvm_x86_ops
->set_irq(vcpu
);
4520 static int vcpu_enter_guest(struct kvm_vcpu
*vcpu
)
4523 bool req_int_win
= !irqchip_in_kernel(vcpu
->kvm
) &&
4524 vcpu
->run
->request_interrupt_window
;
4527 if (test_and_clear_bit(KVM_REQ_MMU_RELOAD
, &vcpu
->requests
))
4528 kvm_mmu_unload(vcpu
);
4530 r
= kvm_mmu_reload(vcpu
);
4534 if (vcpu
->requests
) {
4535 if (test_and_clear_bit(KVM_REQ_MIGRATE_TIMER
, &vcpu
->requests
))
4536 __kvm_migrate_timers(vcpu
);
4537 if (test_and_clear_bit(KVM_REQ_KVMCLOCK_UPDATE
, &vcpu
->requests
))
4538 kvm_write_guest_time(vcpu
);
4539 if (test_and_clear_bit(KVM_REQ_MMU_SYNC
, &vcpu
->requests
))
4540 kvm_mmu_sync_roots(vcpu
);
4541 if (test_and_clear_bit(KVM_REQ_TLB_FLUSH
, &vcpu
->requests
))
4542 kvm_x86_ops
->tlb_flush(vcpu
);
4543 if (test_and_clear_bit(KVM_REQ_REPORT_TPR_ACCESS
,
4545 vcpu
->run
->exit_reason
= KVM_EXIT_TPR_ACCESS
;
4549 if (test_and_clear_bit(KVM_REQ_TRIPLE_FAULT
, &vcpu
->requests
)) {
4550 vcpu
->run
->exit_reason
= KVM_EXIT_SHUTDOWN
;
4554 if (test_and_clear_bit(KVM_REQ_DEACTIVATE_FPU
, &vcpu
->requests
)) {
4555 vcpu
->fpu_active
= 0;
4556 kvm_x86_ops
->fpu_deactivate(vcpu
);
4562 kvm_x86_ops
->prepare_guest_switch(vcpu
);
4563 if (vcpu
->fpu_active
)
4564 kvm_load_guest_fpu(vcpu
);
4566 local_irq_disable();
4568 clear_bit(KVM_REQ_KICK
, &vcpu
->requests
);
4569 smp_mb__after_clear_bit();
4571 if (vcpu
->requests
|| need_resched() || signal_pending(current
)) {
4572 set_bit(KVM_REQ_KICK
, &vcpu
->requests
);
4579 inject_pending_event(vcpu
);
4581 /* enable NMI/IRQ window open exits if needed */
4582 if (vcpu
->arch
.nmi_pending
)
4583 kvm_x86_ops
->enable_nmi_window(vcpu
);
4584 else if (kvm_cpu_has_interrupt(vcpu
) || req_int_win
)
4585 kvm_x86_ops
->enable_irq_window(vcpu
);
4587 if (kvm_lapic_enabled(vcpu
)) {
4588 update_cr8_intercept(vcpu
);
4589 kvm_lapic_sync_to_vapic(vcpu
);
4592 srcu_read_unlock(&vcpu
->kvm
->srcu
, vcpu
->srcu_idx
);
4596 if (unlikely(vcpu
->arch
.switch_db_regs
)) {
4598 set_debugreg(vcpu
->arch
.eff_db
[0], 0);
4599 set_debugreg(vcpu
->arch
.eff_db
[1], 1);
4600 set_debugreg(vcpu
->arch
.eff_db
[2], 2);
4601 set_debugreg(vcpu
->arch
.eff_db
[3], 3);
4604 trace_kvm_entry(vcpu
->vcpu_id
);
4605 kvm_x86_ops
->run(vcpu
);
4608 * If the guest has used debug registers, at least dr7
4609 * will be disabled while returning to the host.
4610 * If we don't have active breakpoints in the host, we don't
4611 * care about the messed up debug address registers. But if
4612 * we have some of them active, restore the old state.
4614 if (hw_breakpoint_active())
4615 hw_breakpoint_restore();
4617 set_bit(KVM_REQ_KICK
, &vcpu
->requests
);
4623 * We must have an instruction between local_irq_enable() and
4624 * kvm_guest_exit(), so the timer interrupt isn't delayed by
4625 * the interrupt shadow. The stat.exits increment will do nicely.
4626 * But we need to prevent reordering, hence this barrier():
4634 vcpu
->srcu_idx
= srcu_read_lock(&vcpu
->kvm
->srcu
);
4637 * Profile KVM exit RIPs:
4639 if (unlikely(prof_on
== KVM_PROFILING
)) {
4640 unsigned long rip
= kvm_rip_read(vcpu
);
4641 profile_hit(KVM_PROFILING
, (void *)rip
);
4645 kvm_lapic_sync_from_vapic(vcpu
);
4647 r
= kvm_x86_ops
->handle_exit(vcpu
);
4653 static int __vcpu_run(struct kvm_vcpu
*vcpu
)
4656 struct kvm
*kvm
= vcpu
->kvm
;
4658 if (unlikely(vcpu
->arch
.mp_state
== KVM_MP_STATE_SIPI_RECEIVED
)) {
4659 pr_debug("vcpu %d received sipi with vector # %x\n",
4660 vcpu
->vcpu_id
, vcpu
->arch
.sipi_vector
);
4661 kvm_lapic_reset(vcpu
);
4662 r
= kvm_arch_vcpu_reset(vcpu
);
4665 vcpu
->arch
.mp_state
= KVM_MP_STATE_RUNNABLE
;
4668 vcpu
->srcu_idx
= srcu_read_lock(&kvm
->srcu
);
4673 if (vcpu
->arch
.mp_state
== KVM_MP_STATE_RUNNABLE
)
4674 r
= vcpu_enter_guest(vcpu
);
4676 srcu_read_unlock(&kvm
->srcu
, vcpu
->srcu_idx
);
4677 kvm_vcpu_block(vcpu
);
4678 vcpu
->srcu_idx
= srcu_read_lock(&kvm
->srcu
);
4679 if (test_and_clear_bit(KVM_REQ_UNHALT
, &vcpu
->requests
))
4681 switch(vcpu
->arch
.mp_state
) {
4682 case KVM_MP_STATE_HALTED
:
4683 vcpu
->arch
.mp_state
=
4684 KVM_MP_STATE_RUNNABLE
;
4685 case KVM_MP_STATE_RUNNABLE
:
4687 case KVM_MP_STATE_SIPI_RECEIVED
:
4698 clear_bit(KVM_REQ_PENDING_TIMER
, &vcpu
->requests
);
4699 if (kvm_cpu_has_pending_timer(vcpu
))
4700 kvm_inject_pending_timer_irqs(vcpu
);
4702 if (dm_request_for_irq_injection(vcpu
)) {
4704 vcpu
->run
->exit_reason
= KVM_EXIT_INTR
;
4705 ++vcpu
->stat
.request_irq_exits
;
4707 if (signal_pending(current
)) {
4709 vcpu
->run
->exit_reason
= KVM_EXIT_INTR
;
4710 ++vcpu
->stat
.signal_exits
;
4712 if (need_resched()) {
4713 srcu_read_unlock(&kvm
->srcu
, vcpu
->srcu_idx
);
4715 vcpu
->srcu_idx
= srcu_read_lock(&kvm
->srcu
);
4719 srcu_read_unlock(&kvm
->srcu
, vcpu
->srcu_idx
);
4726 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
)
4733 if (vcpu
->sigset_active
)
4734 sigprocmask(SIG_SETMASK
, &vcpu
->sigset
, &sigsaved
);
4736 if (unlikely(vcpu
->arch
.mp_state
== KVM_MP_STATE_UNINITIALIZED
)) {
4737 kvm_vcpu_block(vcpu
);
4738 clear_bit(KVM_REQ_UNHALT
, &vcpu
->requests
);
4743 /* re-sync apic's tpr */
4744 if (!irqchip_in_kernel(vcpu
->kvm
))
4745 kvm_set_cr8(vcpu
, kvm_run
->cr8
);
4747 if (vcpu
->arch
.pio
.count
|| vcpu
->mmio_needed
||
4748 vcpu
->arch
.emulate_ctxt
.restart
) {
4749 if (vcpu
->mmio_needed
) {
4750 memcpy(vcpu
->mmio_data
, kvm_run
->mmio
.data
, 8);
4751 vcpu
->mmio_read_completed
= 1;
4752 vcpu
->mmio_needed
= 0;
4754 vcpu
->srcu_idx
= srcu_read_lock(&vcpu
->kvm
->srcu
);
4755 r
= emulate_instruction(vcpu
, 0, 0, EMULTYPE_NO_DECODE
);
4756 srcu_read_unlock(&vcpu
->kvm
->srcu
, vcpu
->srcu_idx
);
4757 if (r
== EMULATE_DO_MMIO
) {
4762 if (kvm_run
->exit_reason
== KVM_EXIT_HYPERCALL
)
4763 kvm_register_write(vcpu
, VCPU_REGS_RAX
,
4764 kvm_run
->hypercall
.ret
);
4766 r
= __vcpu_run(vcpu
);
4769 post_kvm_run_save(vcpu
);
4770 if (vcpu
->sigset_active
)
4771 sigprocmask(SIG_SETMASK
, &sigsaved
, NULL
);
4777 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu
*vcpu
, struct kvm_regs
*regs
)
4781 regs
->rax
= kvm_register_read(vcpu
, VCPU_REGS_RAX
);
4782 regs
->rbx
= kvm_register_read(vcpu
, VCPU_REGS_RBX
);
4783 regs
->rcx
= kvm_register_read(vcpu
, VCPU_REGS_RCX
);
4784 regs
->rdx
= kvm_register_read(vcpu
, VCPU_REGS_RDX
);
4785 regs
->rsi
= kvm_register_read(vcpu
, VCPU_REGS_RSI
);
4786 regs
->rdi
= kvm_register_read(vcpu
, VCPU_REGS_RDI
);
4787 regs
->rsp
= kvm_register_read(vcpu
, VCPU_REGS_RSP
);
4788 regs
->rbp
= kvm_register_read(vcpu
, VCPU_REGS_RBP
);
4789 #ifdef CONFIG_X86_64
4790 regs
->r8
= kvm_register_read(vcpu
, VCPU_REGS_R8
);
4791 regs
->r9
= kvm_register_read(vcpu
, VCPU_REGS_R9
);
4792 regs
->r10
= kvm_register_read(vcpu
, VCPU_REGS_R10
);
4793 regs
->r11
= kvm_register_read(vcpu
, VCPU_REGS_R11
);
4794 regs
->r12
= kvm_register_read(vcpu
, VCPU_REGS_R12
);
4795 regs
->r13
= kvm_register_read(vcpu
, VCPU_REGS_R13
);
4796 regs
->r14
= kvm_register_read(vcpu
, VCPU_REGS_R14
);
4797 regs
->r15
= kvm_register_read(vcpu
, VCPU_REGS_R15
);
4800 regs
->rip
= kvm_rip_read(vcpu
);
4801 regs
->rflags
= kvm_get_rflags(vcpu
);
4808 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu
*vcpu
, struct kvm_regs
*regs
)
4812 kvm_register_write(vcpu
, VCPU_REGS_RAX
, regs
->rax
);
4813 kvm_register_write(vcpu
, VCPU_REGS_RBX
, regs
->rbx
);
4814 kvm_register_write(vcpu
, VCPU_REGS_RCX
, regs
->rcx
);
4815 kvm_register_write(vcpu
, VCPU_REGS_RDX
, regs
->rdx
);
4816 kvm_register_write(vcpu
, VCPU_REGS_RSI
, regs
->rsi
);
4817 kvm_register_write(vcpu
, VCPU_REGS_RDI
, regs
->rdi
);
4818 kvm_register_write(vcpu
, VCPU_REGS_RSP
, regs
->rsp
);
4819 kvm_register_write(vcpu
, VCPU_REGS_RBP
, regs
->rbp
);
4820 #ifdef CONFIG_X86_64
4821 kvm_register_write(vcpu
, VCPU_REGS_R8
, regs
->r8
);
4822 kvm_register_write(vcpu
, VCPU_REGS_R9
, regs
->r9
);
4823 kvm_register_write(vcpu
, VCPU_REGS_R10
, regs
->r10
);
4824 kvm_register_write(vcpu
, VCPU_REGS_R11
, regs
->r11
);
4825 kvm_register_write(vcpu
, VCPU_REGS_R12
, regs
->r12
);
4826 kvm_register_write(vcpu
, VCPU_REGS_R13
, regs
->r13
);
4827 kvm_register_write(vcpu
, VCPU_REGS_R14
, regs
->r14
);
4828 kvm_register_write(vcpu
, VCPU_REGS_R15
, regs
->r15
);
4831 kvm_rip_write(vcpu
, regs
->rip
);
4832 kvm_set_rflags(vcpu
, regs
->rflags
);
4834 vcpu
->arch
.exception
.pending
= false;
4841 void kvm_get_cs_db_l_bits(struct kvm_vcpu
*vcpu
, int *db
, int *l
)
4843 struct kvm_segment cs
;
4845 kvm_get_segment(vcpu
, &cs
, VCPU_SREG_CS
);
4849 EXPORT_SYMBOL_GPL(kvm_get_cs_db_l_bits
);
4851 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu
*vcpu
,
4852 struct kvm_sregs
*sregs
)
4858 kvm_get_segment(vcpu
, &sregs
->cs
, VCPU_SREG_CS
);
4859 kvm_get_segment(vcpu
, &sregs
->ds
, VCPU_SREG_DS
);
4860 kvm_get_segment(vcpu
, &sregs
->es
, VCPU_SREG_ES
);
4861 kvm_get_segment(vcpu
, &sregs
->fs
, VCPU_SREG_FS
);
4862 kvm_get_segment(vcpu
, &sregs
->gs
, VCPU_SREG_GS
);
4863 kvm_get_segment(vcpu
, &sregs
->ss
, VCPU_SREG_SS
);
4865 kvm_get_segment(vcpu
, &sregs
->tr
, VCPU_SREG_TR
);
4866 kvm_get_segment(vcpu
, &sregs
->ldt
, VCPU_SREG_LDTR
);
4868 kvm_x86_ops
->get_idt(vcpu
, &dt
);
4869 sregs
->idt
.limit
= dt
.size
;
4870 sregs
->idt
.base
= dt
.address
;
4871 kvm_x86_ops
->get_gdt(vcpu
, &dt
);
4872 sregs
->gdt
.limit
= dt
.size
;
4873 sregs
->gdt
.base
= dt
.address
;
4875 sregs
->cr0
= kvm_read_cr0(vcpu
);
4876 sregs
->cr2
= vcpu
->arch
.cr2
;
4877 sregs
->cr3
= vcpu
->arch
.cr3
;
4878 sregs
->cr4
= kvm_read_cr4(vcpu
);
4879 sregs
->cr8
= kvm_get_cr8(vcpu
);
4880 sregs
->efer
= vcpu
->arch
.efer
;
4881 sregs
->apic_base
= kvm_get_apic_base(vcpu
);
4883 memset(sregs
->interrupt_bitmap
, 0, sizeof sregs
->interrupt_bitmap
);
4885 if (vcpu
->arch
.interrupt
.pending
&& !vcpu
->arch
.interrupt
.soft
)
4886 set_bit(vcpu
->arch
.interrupt
.nr
,
4887 (unsigned long *)sregs
->interrupt_bitmap
);
4894 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu
*vcpu
,
4895 struct kvm_mp_state
*mp_state
)
4898 mp_state
->mp_state
= vcpu
->arch
.mp_state
;
4903 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu
*vcpu
,
4904 struct kvm_mp_state
*mp_state
)
4907 vcpu
->arch
.mp_state
= mp_state
->mp_state
;
4912 int kvm_task_switch(struct kvm_vcpu
*vcpu
, u16 tss_selector
, int reason
,
4913 bool has_error_code
, u32 error_code
)
4915 int cs_db
, cs_l
, ret
;
4916 cache_all_regs(vcpu
);
4918 kvm_x86_ops
->get_cs_db_l_bits(vcpu
, &cs_db
, &cs_l
);
4920 vcpu
->arch
.emulate_ctxt
.vcpu
= vcpu
;
4921 vcpu
->arch
.emulate_ctxt
.eflags
= kvm_x86_ops
->get_rflags(vcpu
);
4922 vcpu
->arch
.emulate_ctxt
.eip
= kvm_rip_read(vcpu
);
4923 vcpu
->arch
.emulate_ctxt
.mode
=
4924 (!is_protmode(vcpu
)) ? X86EMUL_MODE_REAL
:
4925 (vcpu
->arch
.emulate_ctxt
.eflags
& X86_EFLAGS_VM
)
4926 ? X86EMUL_MODE_VM86
: cs_l
4927 ? X86EMUL_MODE_PROT64
: cs_db
4928 ? X86EMUL_MODE_PROT32
: X86EMUL_MODE_PROT16
;
4930 ret
= emulator_task_switch(&vcpu
->arch
.emulate_ctxt
, &emulate_ops
,
4931 tss_selector
, reason
, has_error_code
,
4935 return EMULATE_FAIL
;
4937 kvm_x86_ops
->set_rflags(vcpu
, vcpu
->arch
.emulate_ctxt
.eflags
);
4938 return EMULATE_DONE
;
4940 EXPORT_SYMBOL_GPL(kvm_task_switch
);
4942 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu
*vcpu
,
4943 struct kvm_sregs
*sregs
)
4945 int mmu_reset_needed
= 0;
4946 int pending_vec
, max_bits
;
4951 dt
.size
= sregs
->idt
.limit
;
4952 dt
.address
= sregs
->idt
.base
;
4953 kvm_x86_ops
->set_idt(vcpu
, &dt
);
4954 dt
.size
= sregs
->gdt
.limit
;
4955 dt
.address
= sregs
->gdt
.base
;
4956 kvm_x86_ops
->set_gdt(vcpu
, &dt
);
4958 vcpu
->arch
.cr2
= sregs
->cr2
;
4959 mmu_reset_needed
|= vcpu
->arch
.cr3
!= sregs
->cr3
;
4960 vcpu
->arch
.cr3
= sregs
->cr3
;
4962 kvm_set_cr8(vcpu
, sregs
->cr8
);
4964 mmu_reset_needed
|= vcpu
->arch
.efer
!= sregs
->efer
;
4965 kvm_x86_ops
->set_efer(vcpu
, sregs
->efer
);
4966 kvm_set_apic_base(vcpu
, sregs
->apic_base
);
4968 mmu_reset_needed
|= kvm_read_cr0(vcpu
) != sregs
->cr0
;
4969 kvm_x86_ops
->set_cr0(vcpu
, sregs
->cr0
);
4970 vcpu
->arch
.cr0
= sregs
->cr0
;
4972 mmu_reset_needed
|= kvm_read_cr4(vcpu
) != sregs
->cr4
;
4973 kvm_x86_ops
->set_cr4(vcpu
, sregs
->cr4
);
4974 if (!is_long_mode(vcpu
) && is_pae(vcpu
)) {
4975 load_pdptrs(vcpu
, vcpu
->arch
.cr3
);
4976 mmu_reset_needed
= 1;
4979 if (mmu_reset_needed
)
4980 kvm_mmu_reset_context(vcpu
);
4982 max_bits
= (sizeof sregs
->interrupt_bitmap
) << 3;
4983 pending_vec
= find_first_bit(
4984 (const unsigned long *)sregs
->interrupt_bitmap
, max_bits
);
4985 if (pending_vec
< max_bits
) {
4986 kvm_queue_interrupt(vcpu
, pending_vec
, false);
4987 pr_debug("Set back pending irq %d\n", pending_vec
);
4988 if (irqchip_in_kernel(vcpu
->kvm
))
4989 kvm_pic_clear_isr_ack(vcpu
->kvm
);
4992 kvm_set_segment(vcpu
, &sregs
->cs
, VCPU_SREG_CS
);
4993 kvm_set_segment(vcpu
, &sregs
->ds
, VCPU_SREG_DS
);
4994 kvm_set_segment(vcpu
, &sregs
->es
, VCPU_SREG_ES
);
4995 kvm_set_segment(vcpu
, &sregs
->fs
, VCPU_SREG_FS
);
4996 kvm_set_segment(vcpu
, &sregs
->gs
, VCPU_SREG_GS
);
4997 kvm_set_segment(vcpu
, &sregs
->ss
, VCPU_SREG_SS
);
4999 kvm_set_segment(vcpu
, &sregs
->tr
, VCPU_SREG_TR
);
5000 kvm_set_segment(vcpu
, &sregs
->ldt
, VCPU_SREG_LDTR
);
5002 update_cr8_intercept(vcpu
);
5004 /* Older userspace won't unhalt the vcpu on reset. */
5005 if (kvm_vcpu_is_bsp(vcpu
) && kvm_rip_read(vcpu
) == 0xfff0 &&
5006 sregs
->cs
.selector
== 0xf000 && sregs
->cs
.base
== 0xffff0000 &&
5008 vcpu
->arch
.mp_state
= KVM_MP_STATE_RUNNABLE
;
5015 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu
*vcpu
,
5016 struct kvm_guest_debug
*dbg
)
5018 unsigned long rflags
;
5023 if (dbg
->control
& (KVM_GUESTDBG_INJECT_DB
| KVM_GUESTDBG_INJECT_BP
)) {
5025 if (vcpu
->arch
.exception
.pending
)
5027 if (dbg
->control
& KVM_GUESTDBG_INJECT_DB
)
5028 kvm_queue_exception(vcpu
, DB_VECTOR
);
5030 kvm_queue_exception(vcpu
, BP_VECTOR
);
5034 * Read rflags as long as potentially injected trace flags are still
5037 rflags
= kvm_get_rflags(vcpu
);
5039 vcpu
->guest_debug
= dbg
->control
;
5040 if (!(vcpu
->guest_debug
& KVM_GUESTDBG_ENABLE
))
5041 vcpu
->guest_debug
= 0;
5043 if (vcpu
->guest_debug
& KVM_GUESTDBG_USE_HW_BP
) {
5044 for (i
= 0; i
< KVM_NR_DB_REGS
; ++i
)
5045 vcpu
->arch
.eff_db
[i
] = dbg
->arch
.debugreg
[i
];
5046 vcpu
->arch
.switch_db_regs
=
5047 (dbg
->arch
.debugreg
[7] & DR7_BP_EN_MASK
);
5049 for (i
= 0; i
< KVM_NR_DB_REGS
; i
++)
5050 vcpu
->arch
.eff_db
[i
] = vcpu
->arch
.db
[i
];
5051 vcpu
->arch
.switch_db_regs
= (vcpu
->arch
.dr7
& DR7_BP_EN_MASK
);
5054 if (vcpu
->guest_debug
& KVM_GUESTDBG_SINGLESTEP
)
5055 vcpu
->arch
.singlestep_rip
= kvm_rip_read(vcpu
) +
5056 get_segment_base(vcpu
, VCPU_SREG_CS
);
5059 * Trigger an rflags update that will inject or remove the trace
5062 kvm_set_rflags(vcpu
, rflags
);
5064 kvm_x86_ops
->set_guest_debug(vcpu
, dbg
);
5075 * fxsave fpu state. Taken from x86_64/processor.h. To be killed when
5076 * we have asm/x86/processor.h
5087 u32 st_space
[32]; /* 8*16 bytes for each FP-reg = 128 bytes */
5088 #ifdef CONFIG_X86_64
5089 u32 xmm_space
[64]; /* 16*16 bytes for each XMM-reg = 256 bytes */
5091 u32 xmm_space
[32]; /* 8*16 bytes for each XMM-reg = 128 bytes */
5096 * Translate a guest virtual address to a guest physical address.
5098 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu
*vcpu
,
5099 struct kvm_translation
*tr
)
5101 unsigned long vaddr
= tr
->linear_address
;
5106 idx
= srcu_read_lock(&vcpu
->kvm
->srcu
);
5107 gpa
= kvm_mmu_gva_to_gpa_system(vcpu
, vaddr
, NULL
);
5108 srcu_read_unlock(&vcpu
->kvm
->srcu
, idx
);
5109 tr
->physical_address
= gpa
;
5110 tr
->valid
= gpa
!= UNMAPPED_GVA
;
5118 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu
*vcpu
, struct kvm_fpu
*fpu
)
5120 struct fxsave
*fxsave
= (struct fxsave
*)&vcpu
->arch
.guest_fx_image
;
5124 memcpy(fpu
->fpr
, fxsave
->st_space
, 128);
5125 fpu
->fcw
= fxsave
->cwd
;
5126 fpu
->fsw
= fxsave
->swd
;
5127 fpu
->ftwx
= fxsave
->twd
;
5128 fpu
->last_opcode
= fxsave
->fop
;
5129 fpu
->last_ip
= fxsave
->rip
;
5130 fpu
->last_dp
= fxsave
->rdp
;
5131 memcpy(fpu
->xmm
, fxsave
->xmm_space
, sizeof fxsave
->xmm_space
);
5138 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu
*vcpu
, struct kvm_fpu
*fpu
)
5140 struct fxsave
*fxsave
= (struct fxsave
*)&vcpu
->arch
.guest_fx_image
;
5144 memcpy(fxsave
->st_space
, fpu
->fpr
, 128);
5145 fxsave
->cwd
= fpu
->fcw
;
5146 fxsave
->swd
= fpu
->fsw
;
5147 fxsave
->twd
= fpu
->ftwx
;
5148 fxsave
->fop
= fpu
->last_opcode
;
5149 fxsave
->rip
= fpu
->last_ip
;
5150 fxsave
->rdp
= fpu
->last_dp
;
5151 memcpy(fxsave
->xmm_space
, fpu
->xmm
, sizeof fxsave
->xmm_space
);
5158 void fx_init(struct kvm_vcpu
*vcpu
)
5160 unsigned after_mxcsr_mask
;
5163 * Touch the fpu the first time in non atomic context as if
5164 * this is the first fpu instruction the exception handler
5165 * will fire before the instruction returns and it'll have to
5166 * allocate ram with GFP_KERNEL.
5169 kvm_fx_save(&vcpu
->arch
.host_fx_image
);
5171 /* Initialize guest FPU by resetting ours and saving into guest's */
5173 kvm_fx_save(&vcpu
->arch
.host_fx_image
);
5175 kvm_fx_save(&vcpu
->arch
.guest_fx_image
);
5176 kvm_fx_restore(&vcpu
->arch
.host_fx_image
);
5179 vcpu
->arch
.cr0
|= X86_CR0_ET
;
5180 after_mxcsr_mask
= offsetof(struct i387_fxsave_struct
, st_space
);
5181 vcpu
->arch
.guest_fx_image
.mxcsr
= 0x1f80;
5182 memset((void *)&vcpu
->arch
.guest_fx_image
+ after_mxcsr_mask
,
5183 0, sizeof(struct i387_fxsave_struct
) - after_mxcsr_mask
);
5185 EXPORT_SYMBOL_GPL(fx_init
);
5187 void kvm_load_guest_fpu(struct kvm_vcpu
*vcpu
)
5189 if (vcpu
->guest_fpu_loaded
)
5192 vcpu
->guest_fpu_loaded
= 1;
5193 kvm_fx_save(&vcpu
->arch
.host_fx_image
);
5194 kvm_fx_restore(&vcpu
->arch
.guest_fx_image
);
5198 void kvm_put_guest_fpu(struct kvm_vcpu
*vcpu
)
5200 if (!vcpu
->guest_fpu_loaded
)
5203 vcpu
->guest_fpu_loaded
= 0;
5204 kvm_fx_save(&vcpu
->arch
.guest_fx_image
);
5205 kvm_fx_restore(&vcpu
->arch
.host_fx_image
);
5206 ++vcpu
->stat
.fpu_reload
;
5207 set_bit(KVM_REQ_DEACTIVATE_FPU
, &vcpu
->requests
);
5211 void kvm_arch_vcpu_free(struct kvm_vcpu
*vcpu
)
5213 if (vcpu
->arch
.time_page
) {
5214 kvm_release_page_dirty(vcpu
->arch
.time_page
);
5215 vcpu
->arch
.time_page
= NULL
;
5218 kvm_x86_ops
->vcpu_free(vcpu
);
5221 struct kvm_vcpu
*kvm_arch_vcpu_create(struct kvm
*kvm
,
5224 return kvm_x86_ops
->vcpu_create(kvm
, id
);
5227 int kvm_arch_vcpu_setup(struct kvm_vcpu
*vcpu
)
5231 /* We do fxsave: this must be aligned. */
5232 BUG_ON((unsigned long)&vcpu
->arch
.host_fx_image
& 0xF);
5234 vcpu
->arch
.mtrr_state
.have_fixed
= 1;
5236 r
= kvm_arch_vcpu_reset(vcpu
);
5238 r
= kvm_mmu_setup(vcpu
);
5245 kvm_x86_ops
->vcpu_free(vcpu
);
5249 void kvm_arch_vcpu_destroy(struct kvm_vcpu
*vcpu
)
5252 kvm_mmu_unload(vcpu
);
5255 kvm_x86_ops
->vcpu_free(vcpu
);
5258 int kvm_arch_vcpu_reset(struct kvm_vcpu
*vcpu
)
5260 vcpu
->arch
.nmi_pending
= false;
5261 vcpu
->arch
.nmi_injected
= false;
5263 vcpu
->arch
.switch_db_regs
= 0;
5264 memset(vcpu
->arch
.db
, 0, sizeof(vcpu
->arch
.db
));
5265 vcpu
->arch
.dr6
= DR6_FIXED_1
;
5266 vcpu
->arch
.dr7
= DR7_FIXED_1
;
5268 return kvm_x86_ops
->vcpu_reset(vcpu
);
5271 int kvm_arch_hardware_enable(void *garbage
)
5274 * Since this may be called from a hotplug notifcation,
5275 * we can't get the CPU frequency directly.
5277 if (!boot_cpu_has(X86_FEATURE_CONSTANT_TSC
)) {
5278 int cpu
= raw_smp_processor_id();
5279 per_cpu(cpu_tsc_khz
, cpu
) = 0;
5282 kvm_shared_msr_cpu_online();
5284 return kvm_x86_ops
->hardware_enable(garbage
);
5287 void kvm_arch_hardware_disable(void *garbage
)
5289 kvm_x86_ops
->hardware_disable(garbage
);
5290 drop_user_return_notifiers(garbage
);
5293 int kvm_arch_hardware_setup(void)
5295 return kvm_x86_ops
->hardware_setup();
5298 void kvm_arch_hardware_unsetup(void)
5300 kvm_x86_ops
->hardware_unsetup();
5303 void kvm_arch_check_processor_compat(void *rtn
)
5305 kvm_x86_ops
->check_processor_compatibility(rtn
);
5308 int kvm_arch_vcpu_init(struct kvm_vcpu
*vcpu
)
5314 BUG_ON(vcpu
->kvm
== NULL
);
5317 vcpu
->arch
.mmu
.root_hpa
= INVALID_PAGE
;
5318 if (!irqchip_in_kernel(kvm
) || kvm_vcpu_is_bsp(vcpu
))
5319 vcpu
->arch
.mp_state
= KVM_MP_STATE_RUNNABLE
;
5321 vcpu
->arch
.mp_state
= KVM_MP_STATE_UNINITIALIZED
;
5323 page
= alloc_page(GFP_KERNEL
| __GFP_ZERO
);
5328 vcpu
->arch
.pio_data
= page_address(page
);
5330 r
= kvm_mmu_create(vcpu
);
5332 goto fail_free_pio_data
;
5334 if (irqchip_in_kernel(kvm
)) {
5335 r
= kvm_create_lapic(vcpu
);
5337 goto fail_mmu_destroy
;
5340 vcpu
->arch
.mce_banks
= kzalloc(KVM_MAX_MCE_BANKS
* sizeof(u64
) * 4,
5342 if (!vcpu
->arch
.mce_banks
) {
5344 goto fail_free_lapic
;
5346 vcpu
->arch
.mcg_cap
= KVM_MAX_MCE_BANKS
;
5350 kvm_free_lapic(vcpu
);
5352 kvm_mmu_destroy(vcpu
);
5354 free_page((unsigned long)vcpu
->arch
.pio_data
);
5359 void kvm_arch_vcpu_uninit(struct kvm_vcpu
*vcpu
)
5363 kfree(vcpu
->arch
.mce_banks
);
5364 kvm_free_lapic(vcpu
);
5365 idx
= srcu_read_lock(&vcpu
->kvm
->srcu
);
5366 kvm_mmu_destroy(vcpu
);
5367 srcu_read_unlock(&vcpu
->kvm
->srcu
, idx
);
5368 free_page((unsigned long)vcpu
->arch
.pio_data
);
5371 struct kvm
*kvm_arch_create_vm(void)
5373 struct kvm
*kvm
= kzalloc(sizeof(struct kvm
), GFP_KERNEL
);
5376 return ERR_PTR(-ENOMEM
);
5378 kvm
->arch
.aliases
= kzalloc(sizeof(struct kvm_mem_aliases
), GFP_KERNEL
);
5379 if (!kvm
->arch
.aliases
) {
5381 return ERR_PTR(-ENOMEM
);
5384 INIT_LIST_HEAD(&kvm
->arch
.active_mmu_pages
);
5385 INIT_LIST_HEAD(&kvm
->arch
.assigned_dev_head
);
5387 /* Reserve bit 0 of irq_sources_bitmap for userspace irq source */
5388 set_bit(KVM_USERSPACE_IRQ_SOURCE_ID
, &kvm
->arch
.irq_sources_bitmap
);
5390 rdtscll(kvm
->arch
.vm_init_tsc
);
5395 static void kvm_unload_vcpu_mmu(struct kvm_vcpu
*vcpu
)
5398 kvm_mmu_unload(vcpu
);
5402 static void kvm_free_vcpus(struct kvm
*kvm
)
5405 struct kvm_vcpu
*vcpu
;
5408 * Unpin any mmu pages first.
5410 kvm_for_each_vcpu(i
, vcpu
, kvm
)
5411 kvm_unload_vcpu_mmu(vcpu
);
5412 kvm_for_each_vcpu(i
, vcpu
, kvm
)
5413 kvm_arch_vcpu_free(vcpu
);
5415 mutex_lock(&kvm
->lock
);
5416 for (i
= 0; i
< atomic_read(&kvm
->online_vcpus
); i
++)
5417 kvm
->vcpus
[i
] = NULL
;
5419 atomic_set(&kvm
->online_vcpus
, 0);
5420 mutex_unlock(&kvm
->lock
);
5423 void kvm_arch_sync_events(struct kvm
*kvm
)
5425 kvm_free_all_assigned_devices(kvm
);
5428 void kvm_arch_destroy_vm(struct kvm
*kvm
)
5430 kvm_iommu_unmap_guest(kvm
);
5432 kfree(kvm
->arch
.vpic
);
5433 kfree(kvm
->arch
.vioapic
);
5434 kvm_free_vcpus(kvm
);
5435 kvm_free_physmem(kvm
);
5436 if (kvm
->arch
.apic_access_page
)
5437 put_page(kvm
->arch
.apic_access_page
);
5438 if (kvm
->arch
.ept_identity_pagetable
)
5439 put_page(kvm
->arch
.ept_identity_pagetable
);
5440 cleanup_srcu_struct(&kvm
->srcu
);
5441 kfree(kvm
->arch
.aliases
);
5445 int kvm_arch_prepare_memory_region(struct kvm
*kvm
,
5446 struct kvm_memory_slot
*memslot
,
5447 struct kvm_memory_slot old
,
5448 struct kvm_userspace_memory_region
*mem
,
5451 int npages
= memslot
->npages
;
5453 /*To keep backward compatibility with older userspace,
5454 *x86 needs to hanlde !user_alloc case.
5457 if (npages
&& !old
.rmap
) {
5458 unsigned long userspace_addr
;
5460 down_write(¤t
->mm
->mmap_sem
);
5461 userspace_addr
= do_mmap(NULL
, 0,
5463 PROT_READ
| PROT_WRITE
,
5464 MAP_PRIVATE
| MAP_ANONYMOUS
,
5466 up_write(¤t
->mm
->mmap_sem
);
5468 if (IS_ERR((void *)userspace_addr
))
5469 return PTR_ERR((void *)userspace_addr
);
5471 memslot
->userspace_addr
= userspace_addr
;
5479 void kvm_arch_commit_memory_region(struct kvm
*kvm
,
5480 struct kvm_userspace_memory_region
*mem
,
5481 struct kvm_memory_slot old
,
5485 int npages
= mem
->memory_size
>> PAGE_SHIFT
;
5487 if (!user_alloc
&& !old
.user_alloc
&& old
.rmap
&& !npages
) {
5490 down_write(¤t
->mm
->mmap_sem
);
5491 ret
= do_munmap(current
->mm
, old
.userspace_addr
,
5492 old
.npages
* PAGE_SIZE
);
5493 up_write(¤t
->mm
->mmap_sem
);
5496 "kvm_vm_ioctl_set_memory_region: "
5497 "failed to munmap memory\n");
5500 spin_lock(&kvm
->mmu_lock
);
5501 if (!kvm
->arch
.n_requested_mmu_pages
) {
5502 unsigned int nr_mmu_pages
= kvm_mmu_calculate_mmu_pages(kvm
);
5503 kvm_mmu_change_mmu_pages(kvm
, nr_mmu_pages
);
5506 kvm_mmu_slot_remove_write_access(kvm
, mem
->slot
);
5507 spin_unlock(&kvm
->mmu_lock
);
5510 void kvm_arch_flush_shadow(struct kvm
*kvm
)
5512 kvm_mmu_zap_all(kvm
);
5513 kvm_reload_remote_mmus(kvm
);
5516 int kvm_arch_vcpu_runnable(struct kvm_vcpu
*vcpu
)
5518 return vcpu
->arch
.mp_state
== KVM_MP_STATE_RUNNABLE
5519 || vcpu
->arch
.mp_state
== KVM_MP_STATE_SIPI_RECEIVED
5520 || vcpu
->arch
.nmi_pending
||
5521 (kvm_arch_interrupt_allowed(vcpu
) &&
5522 kvm_cpu_has_interrupt(vcpu
));
5525 void kvm_vcpu_kick(struct kvm_vcpu
*vcpu
)
5528 int cpu
= vcpu
->cpu
;
5530 if (waitqueue_active(&vcpu
->wq
)) {
5531 wake_up_interruptible(&vcpu
->wq
);
5532 ++vcpu
->stat
.halt_wakeup
;
5536 if (cpu
!= me
&& (unsigned)cpu
< nr_cpu_ids
&& cpu_online(cpu
))
5537 if (!test_and_set_bit(KVM_REQ_KICK
, &vcpu
->requests
))
5538 smp_send_reschedule(cpu
);
5542 int kvm_arch_interrupt_allowed(struct kvm_vcpu
*vcpu
)
5544 return kvm_x86_ops
->interrupt_allowed(vcpu
);
5547 bool kvm_is_linear_rip(struct kvm_vcpu
*vcpu
, unsigned long linear_rip
)
5549 unsigned long current_rip
= kvm_rip_read(vcpu
) +
5550 get_segment_base(vcpu
, VCPU_SREG_CS
);
5552 return current_rip
== linear_rip
;
5554 EXPORT_SYMBOL_GPL(kvm_is_linear_rip
);
5556 unsigned long kvm_get_rflags(struct kvm_vcpu
*vcpu
)
5558 unsigned long rflags
;
5560 rflags
= kvm_x86_ops
->get_rflags(vcpu
);
5561 if (vcpu
->guest_debug
& KVM_GUESTDBG_SINGLESTEP
)
5562 rflags
&= ~X86_EFLAGS_TF
;
5565 EXPORT_SYMBOL_GPL(kvm_get_rflags
);
5567 void kvm_set_rflags(struct kvm_vcpu
*vcpu
, unsigned long rflags
)
5569 if (vcpu
->guest_debug
& KVM_GUESTDBG_SINGLESTEP
&&
5570 kvm_is_linear_rip(vcpu
, vcpu
->arch
.singlestep_rip
))
5571 rflags
|= X86_EFLAGS_TF
;
5572 kvm_x86_ops
->set_rflags(vcpu
, rflags
);
5574 EXPORT_SYMBOL_GPL(kvm_set_rflags
);
5576 EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_exit
);
5577 EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_inj_virq
);
5578 EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_page_fault
);
5579 EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_msr
);
5580 EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_cr
);
5581 EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_nested_vmrun
);
5582 EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_nested_vmexit
);
5583 EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_nested_vmexit_inject
);
5584 EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_nested_intr_vmexit
);
5585 EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_invlpga
);
5586 EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_skinit
);
5587 EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_nested_intercepts
);