2 * Kernel-based Virtual Machine driver for Linux
6 * Copyright (C) 2006 Qumranet, Inc.
7 * Copyright 2010 Red Hat, Inc. and/or its affiliates.
10 * Yaniv Kamay <yaniv@qumranet.com>
11 * Avi Kivity <avi@qumranet.com>
13 * This work is licensed under the terms of the GNU GPL, version 2. See
14 * the COPYING file in the top-level directory.
17 #include <linux/kvm_host.h>
21 #include "kvm_cache_regs.h"
26 #include <linux/module.h>
27 #include <linux/mod_devicetable.h>
28 #include <linux/kernel.h>
29 #include <linux/vmalloc.h>
30 #include <linux/highmem.h>
31 #include <linux/sched.h>
32 #include <linux/trace_events.h>
33 #include <linux/slab.h>
35 #include <asm/perf_event.h>
36 #include <asm/tlbflush.h>
38 #include <asm/debugreg.h>
39 #include <asm/kvm_para.h>
41 #include <asm/virtext.h>
44 #define __ex(x) __kvm_handle_fault_on_reboot(x)
46 MODULE_AUTHOR("Qumranet");
47 MODULE_LICENSE("GPL");
49 static const struct x86_cpu_id svm_cpu_id
[] = {
50 X86_FEATURE_MATCH(X86_FEATURE_SVM
),
53 MODULE_DEVICE_TABLE(x86cpu
, svm_cpu_id
);
55 #define IOPM_ALLOC_ORDER 2
56 #define MSRPM_ALLOC_ORDER 1
58 #define SEG_TYPE_LDT 2
59 #define SEG_TYPE_BUSY_TSS16 3
61 #define SVM_FEATURE_NPT (1 << 0)
62 #define SVM_FEATURE_LBRV (1 << 1)
63 #define SVM_FEATURE_SVML (1 << 2)
64 #define SVM_FEATURE_NRIP (1 << 3)
65 #define SVM_FEATURE_TSC_RATE (1 << 4)
66 #define SVM_FEATURE_VMCB_CLEAN (1 << 5)
67 #define SVM_FEATURE_FLUSH_ASID (1 << 6)
68 #define SVM_FEATURE_DECODE_ASSIST (1 << 7)
69 #define SVM_FEATURE_PAUSE_FILTER (1 << 10)
71 #define NESTED_EXIT_HOST 0 /* Exit handled on host level */
72 #define NESTED_EXIT_DONE 1 /* Exit caused nested vmexit */
73 #define NESTED_EXIT_CONTINUE 2 /* Further checks needed */
75 #define DEBUGCTL_RESERVED_BITS (~(0x3fULL))
77 #define TSC_RATIO_RSVD 0xffffff0000000000ULL
78 #define TSC_RATIO_MIN 0x0000000000000001ULL
79 #define TSC_RATIO_MAX 0x000000ffffffffffULL
81 static bool erratum_383_found __read_mostly
;
83 static const u32 host_save_user_msrs
[] = {
85 MSR_STAR
, MSR_LSTAR
, MSR_CSTAR
, MSR_SYSCALL_MASK
, MSR_KERNEL_GS_BASE
,
88 MSR_IA32_SYSENTER_CS
, MSR_IA32_SYSENTER_ESP
, MSR_IA32_SYSENTER_EIP
,
91 #define NR_HOST_SAVE_USER_MSRS ARRAY_SIZE(host_save_user_msrs)
101 /* These are the merged vectors */
104 /* gpa pointers to the real vectors */
108 /* A VMEXIT is required but not yet emulated */
111 /* cache for intercepts of the guest */
114 u32 intercept_exceptions
;
117 /* Nested Paging related state */
121 #define MSRPM_OFFSETS 16
122 static u32 msrpm_offsets
[MSRPM_OFFSETS
] __read_mostly
;
125 * Set osvw_len to higher value when updated Revision Guides
126 * are published and we know what the new status bits are
128 static uint64_t osvw_len
= 4, osvw_status
;
131 struct kvm_vcpu vcpu
;
133 unsigned long vmcb_pa
;
134 struct svm_cpu_data
*svm_data
;
135 uint64_t asid_generation
;
136 uint64_t sysenter_esp
;
137 uint64_t sysenter_eip
;
141 u64 host_user_msrs
[NR_HOST_SAVE_USER_MSRS
];
153 struct nested_state nested
;
157 unsigned int3_injected
;
158 unsigned long int3_rip
;
164 static DEFINE_PER_CPU(u64
, current_tsc_ratio
);
165 #define TSC_RATIO_DEFAULT 0x0100000000ULL
167 #define MSR_INVALID 0xffffffffU
169 static const struct svm_direct_access_msrs
{
170 u32 index
; /* Index of the MSR */
171 bool always
; /* True if intercept is always on */
172 } direct_access_msrs
[] = {
173 { .index
= MSR_STAR
, .always
= true },
174 { .index
= MSR_IA32_SYSENTER_CS
, .always
= true },
176 { .index
= MSR_GS_BASE
, .always
= true },
177 { .index
= MSR_FS_BASE
, .always
= true },
178 { .index
= MSR_KERNEL_GS_BASE
, .always
= true },
179 { .index
= MSR_LSTAR
, .always
= true },
180 { .index
= MSR_CSTAR
, .always
= true },
181 { .index
= MSR_SYSCALL_MASK
, .always
= true },
183 { .index
= MSR_IA32_LASTBRANCHFROMIP
, .always
= false },
184 { .index
= MSR_IA32_LASTBRANCHTOIP
, .always
= false },
185 { .index
= MSR_IA32_LASTINTFROMIP
, .always
= false },
186 { .index
= MSR_IA32_LASTINTTOIP
, .always
= false },
187 { .index
= MSR_INVALID
, .always
= false },
190 /* enable NPT for AMD64 and X86 with PAE */
191 #if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE)
192 static bool npt_enabled
= true;
194 static bool npt_enabled
;
197 /* allow nested paging (virtualized MMU) for all guests */
198 static int npt
= true;
199 module_param(npt
, int, S_IRUGO
);
201 /* allow nested virtualization in KVM/SVM */
202 static int nested
= true;
203 module_param(nested
, int, S_IRUGO
);
205 static void svm_set_cr0(struct kvm_vcpu
*vcpu
, unsigned long cr0
);
206 static void svm_flush_tlb(struct kvm_vcpu
*vcpu
);
207 static void svm_complete_interrupts(struct vcpu_svm
*svm
);
209 static int nested_svm_exit_handled(struct vcpu_svm
*svm
);
210 static int nested_svm_intercept(struct vcpu_svm
*svm
);
211 static int nested_svm_vmexit(struct vcpu_svm
*svm
);
212 static int nested_svm_check_exception(struct vcpu_svm
*svm
, unsigned nr
,
213 bool has_error_code
, u32 error_code
);
214 static u64
__scale_tsc(u64 ratio
, u64 tsc
);
217 VMCB_INTERCEPTS
, /* Intercept vectors, TSC offset,
218 pause filter count */
219 VMCB_PERM_MAP
, /* IOPM Base and MSRPM Base */
220 VMCB_ASID
, /* ASID */
221 VMCB_INTR
, /* int_ctl, int_vector */
222 VMCB_NPT
, /* npt_en, nCR3, gPAT */
223 VMCB_CR
, /* CR0, CR3, CR4, EFER */
224 VMCB_DR
, /* DR6, DR7 */
225 VMCB_DT
, /* GDT, IDT */
226 VMCB_SEG
, /* CS, DS, SS, ES, CPL */
227 VMCB_CR2
, /* CR2 only */
228 VMCB_LBR
, /* DBGCTL, BR_FROM, BR_TO, LAST_EX_FROM, LAST_EX_TO */
232 /* TPR and CR2 are always written before VMRUN */
233 #define VMCB_ALWAYS_DIRTY_MASK ((1U << VMCB_INTR) | (1U << VMCB_CR2))
235 static inline void mark_all_dirty(struct vmcb
*vmcb
)
237 vmcb
->control
.clean
= 0;
240 static inline void mark_all_clean(struct vmcb
*vmcb
)
242 vmcb
->control
.clean
= ((1 << VMCB_DIRTY_MAX
) - 1)
243 & ~VMCB_ALWAYS_DIRTY_MASK
;
246 static inline void mark_dirty(struct vmcb
*vmcb
, int bit
)
248 vmcb
->control
.clean
&= ~(1 << bit
);
251 static inline struct vcpu_svm
*to_svm(struct kvm_vcpu
*vcpu
)
253 return container_of(vcpu
, struct vcpu_svm
, vcpu
);
256 static void recalc_intercepts(struct vcpu_svm
*svm
)
258 struct vmcb_control_area
*c
, *h
;
259 struct nested_state
*g
;
261 mark_dirty(svm
->vmcb
, VMCB_INTERCEPTS
);
263 if (!is_guest_mode(&svm
->vcpu
))
266 c
= &svm
->vmcb
->control
;
267 h
= &svm
->nested
.hsave
->control
;
270 c
->intercept_cr
= h
->intercept_cr
| g
->intercept_cr
;
271 c
->intercept_dr
= h
->intercept_dr
| g
->intercept_dr
;
272 c
->intercept_exceptions
= h
->intercept_exceptions
| g
->intercept_exceptions
;
273 c
->intercept
= h
->intercept
| g
->intercept
;
276 static inline struct vmcb
*get_host_vmcb(struct vcpu_svm
*svm
)
278 if (is_guest_mode(&svm
->vcpu
))
279 return svm
->nested
.hsave
;
284 static inline void set_cr_intercept(struct vcpu_svm
*svm
, int bit
)
286 struct vmcb
*vmcb
= get_host_vmcb(svm
);
288 vmcb
->control
.intercept_cr
|= (1U << bit
);
290 recalc_intercepts(svm
);
293 static inline void clr_cr_intercept(struct vcpu_svm
*svm
, int bit
)
295 struct vmcb
*vmcb
= get_host_vmcb(svm
);
297 vmcb
->control
.intercept_cr
&= ~(1U << bit
);
299 recalc_intercepts(svm
);
302 static inline bool is_cr_intercept(struct vcpu_svm
*svm
, int bit
)
304 struct vmcb
*vmcb
= get_host_vmcb(svm
);
306 return vmcb
->control
.intercept_cr
& (1U << bit
);
309 static inline void set_dr_intercepts(struct vcpu_svm
*svm
)
311 struct vmcb
*vmcb
= get_host_vmcb(svm
);
313 vmcb
->control
.intercept_dr
= (1 << INTERCEPT_DR0_READ
)
314 | (1 << INTERCEPT_DR1_READ
)
315 | (1 << INTERCEPT_DR2_READ
)
316 | (1 << INTERCEPT_DR3_READ
)
317 | (1 << INTERCEPT_DR4_READ
)
318 | (1 << INTERCEPT_DR5_READ
)
319 | (1 << INTERCEPT_DR6_READ
)
320 | (1 << INTERCEPT_DR7_READ
)
321 | (1 << INTERCEPT_DR0_WRITE
)
322 | (1 << INTERCEPT_DR1_WRITE
)
323 | (1 << INTERCEPT_DR2_WRITE
)
324 | (1 << INTERCEPT_DR3_WRITE
)
325 | (1 << INTERCEPT_DR4_WRITE
)
326 | (1 << INTERCEPT_DR5_WRITE
)
327 | (1 << INTERCEPT_DR6_WRITE
)
328 | (1 << INTERCEPT_DR7_WRITE
);
330 recalc_intercepts(svm
);
333 static inline void clr_dr_intercepts(struct vcpu_svm
*svm
)
335 struct vmcb
*vmcb
= get_host_vmcb(svm
);
337 vmcb
->control
.intercept_dr
= 0;
339 recalc_intercepts(svm
);
342 static inline void set_exception_intercept(struct vcpu_svm
*svm
, int bit
)
344 struct vmcb
*vmcb
= get_host_vmcb(svm
);
346 vmcb
->control
.intercept_exceptions
|= (1U << bit
);
348 recalc_intercepts(svm
);
351 static inline void clr_exception_intercept(struct vcpu_svm
*svm
, int bit
)
353 struct vmcb
*vmcb
= get_host_vmcb(svm
);
355 vmcb
->control
.intercept_exceptions
&= ~(1U << bit
);
357 recalc_intercepts(svm
);
360 static inline void set_intercept(struct vcpu_svm
*svm
, int bit
)
362 struct vmcb
*vmcb
= get_host_vmcb(svm
);
364 vmcb
->control
.intercept
|= (1ULL << bit
);
366 recalc_intercepts(svm
);
369 static inline void clr_intercept(struct vcpu_svm
*svm
, int bit
)
371 struct vmcb
*vmcb
= get_host_vmcb(svm
);
373 vmcb
->control
.intercept
&= ~(1ULL << bit
);
375 recalc_intercepts(svm
);
378 static inline void enable_gif(struct vcpu_svm
*svm
)
380 svm
->vcpu
.arch
.hflags
|= HF_GIF_MASK
;
383 static inline void disable_gif(struct vcpu_svm
*svm
)
385 svm
->vcpu
.arch
.hflags
&= ~HF_GIF_MASK
;
388 static inline bool gif_set(struct vcpu_svm
*svm
)
390 return !!(svm
->vcpu
.arch
.hflags
& HF_GIF_MASK
);
393 static unsigned long iopm_base
;
395 struct kvm_ldttss_desc
{
398 unsigned base1
:8, type
:5, dpl
:2, p
:1;
399 unsigned limit1
:4, zero0
:3, g
:1, base2
:8;
402 } __attribute__((packed
));
404 struct svm_cpu_data
{
410 struct kvm_ldttss_desc
*tss_desc
;
412 struct page
*save_area
;
415 static DEFINE_PER_CPU(struct svm_cpu_data
*, svm_data
);
417 struct svm_init_data
{
422 static const u32 msrpm_ranges
[] = {0, 0xc0000000, 0xc0010000};
424 #define NUM_MSR_MAPS ARRAY_SIZE(msrpm_ranges)
425 #define MSRS_RANGE_SIZE 2048
426 #define MSRS_IN_RANGE (MSRS_RANGE_SIZE * 8 / 2)
428 static u32
svm_msrpm_offset(u32 msr
)
433 for (i
= 0; i
< NUM_MSR_MAPS
; i
++) {
434 if (msr
< msrpm_ranges
[i
] ||
435 msr
>= msrpm_ranges
[i
] + MSRS_IN_RANGE
)
438 offset
= (msr
- msrpm_ranges
[i
]) / 4; /* 4 msrs per u8 */
439 offset
+= (i
* MSRS_RANGE_SIZE
); /* add range offset */
441 /* Now we have the u8 offset - but need the u32 offset */
445 /* MSR not in any range */
449 #define MAX_INST_SIZE 15
451 static inline void clgi(void)
453 asm volatile (__ex(SVM_CLGI
));
456 static inline void stgi(void)
458 asm volatile (__ex(SVM_STGI
));
461 static inline void invlpga(unsigned long addr
, u32 asid
)
463 asm volatile (__ex(SVM_INVLPGA
) : : "a"(addr
), "c"(asid
));
466 static int get_npt_level(void)
469 return PT64_ROOT_LEVEL
;
471 return PT32E_ROOT_LEVEL
;
475 static void svm_set_efer(struct kvm_vcpu
*vcpu
, u64 efer
)
477 vcpu
->arch
.efer
= efer
;
478 if (!npt_enabled
&& !(efer
& EFER_LMA
))
481 to_svm(vcpu
)->vmcb
->save
.efer
= efer
| EFER_SVME
;
482 mark_dirty(to_svm(vcpu
)->vmcb
, VMCB_CR
);
485 static int is_external_interrupt(u32 info
)
487 info
&= SVM_EVTINJ_TYPE_MASK
| SVM_EVTINJ_VALID
;
488 return info
== (SVM_EVTINJ_VALID
| SVM_EVTINJ_TYPE_INTR
);
491 static u32
svm_get_interrupt_shadow(struct kvm_vcpu
*vcpu
)
493 struct vcpu_svm
*svm
= to_svm(vcpu
);
496 if (svm
->vmcb
->control
.int_state
& SVM_INTERRUPT_SHADOW_MASK
)
497 ret
= KVM_X86_SHADOW_INT_STI
| KVM_X86_SHADOW_INT_MOV_SS
;
501 static void svm_set_interrupt_shadow(struct kvm_vcpu
*vcpu
, int mask
)
503 struct vcpu_svm
*svm
= to_svm(vcpu
);
506 svm
->vmcb
->control
.int_state
&= ~SVM_INTERRUPT_SHADOW_MASK
;
508 svm
->vmcb
->control
.int_state
|= SVM_INTERRUPT_SHADOW_MASK
;
512 static void skip_emulated_instruction(struct kvm_vcpu
*vcpu
)
514 struct vcpu_svm
*svm
= to_svm(vcpu
);
516 if (svm
->vmcb
->control
.next_rip
!= 0) {
517 WARN_ON(!static_cpu_has(X86_FEATURE_NRIPS
));
518 svm
->next_rip
= svm
->vmcb
->control
.next_rip
;
521 if (!svm
->next_rip
) {
522 if (emulate_instruction(vcpu
, EMULTYPE_SKIP
) !=
524 printk(KERN_DEBUG
"%s: NOP\n", __func__
);
527 if (svm
->next_rip
- kvm_rip_read(vcpu
) > MAX_INST_SIZE
)
528 printk(KERN_ERR
"%s: ip 0x%lx next 0x%llx\n",
529 __func__
, kvm_rip_read(vcpu
), svm
->next_rip
);
531 kvm_rip_write(vcpu
, svm
->next_rip
);
532 svm_set_interrupt_shadow(vcpu
, 0);
535 static void svm_queue_exception(struct kvm_vcpu
*vcpu
, unsigned nr
,
536 bool has_error_code
, u32 error_code
,
539 struct vcpu_svm
*svm
= to_svm(vcpu
);
542 * If we are within a nested VM we'd better #VMEXIT and let the guest
543 * handle the exception
546 nested_svm_check_exception(svm
, nr
, has_error_code
, error_code
))
549 if (nr
== BP_VECTOR
&& !static_cpu_has(X86_FEATURE_NRIPS
)) {
550 unsigned long rip
, old_rip
= kvm_rip_read(&svm
->vcpu
);
553 * For guest debugging where we have to reinject #BP if some
554 * INT3 is guest-owned:
555 * Emulate nRIP by moving RIP forward. Will fail if injection
556 * raises a fault that is not intercepted. Still better than
557 * failing in all cases.
559 skip_emulated_instruction(&svm
->vcpu
);
560 rip
= kvm_rip_read(&svm
->vcpu
);
561 svm
->int3_rip
= rip
+ svm
->vmcb
->save
.cs
.base
;
562 svm
->int3_injected
= rip
- old_rip
;
565 svm
->vmcb
->control
.event_inj
= nr
567 | (has_error_code
? SVM_EVTINJ_VALID_ERR
: 0)
568 | SVM_EVTINJ_TYPE_EXEPT
;
569 svm
->vmcb
->control
.event_inj_err
= error_code
;
572 static void svm_init_erratum_383(void)
578 if (!static_cpu_has_bug(X86_BUG_AMD_TLB_MMATCH
))
581 /* Use _safe variants to not break nested virtualization */
582 val
= native_read_msr_safe(MSR_AMD64_DC_CFG
, &err
);
588 low
= lower_32_bits(val
);
589 high
= upper_32_bits(val
);
591 native_write_msr_safe(MSR_AMD64_DC_CFG
, low
, high
);
593 erratum_383_found
= true;
596 static void svm_init_osvw(struct kvm_vcpu
*vcpu
)
599 * Guests should see errata 400 and 415 as fixed (assuming that
600 * HLT and IO instructions are intercepted).
602 vcpu
->arch
.osvw
.length
= (osvw_len
>= 3) ? (osvw_len
) : 3;
603 vcpu
->arch
.osvw
.status
= osvw_status
& ~(6ULL);
606 * By increasing VCPU's osvw.length to 3 we are telling the guest that
607 * all osvw.status bits inside that length, including bit 0 (which is
608 * reserved for erratum 298), are valid. However, if host processor's
609 * osvw_len is 0 then osvw_status[0] carries no information. We need to
610 * be conservative here and therefore we tell the guest that erratum 298
611 * is present (because we really don't know).
613 if (osvw_len
== 0 && boot_cpu_data
.x86
== 0x10)
614 vcpu
->arch
.osvw
.status
|= 1;
617 static int has_svm(void)
621 if (!cpu_has_svm(&msg
)) {
622 printk(KERN_INFO
"has_svm: %s\n", msg
);
629 static void svm_hardware_disable(void)
631 /* Make sure we clean up behind us */
632 if (static_cpu_has(X86_FEATURE_TSCRATEMSR
))
633 wrmsrl(MSR_AMD64_TSC_RATIO
, TSC_RATIO_DEFAULT
);
637 amd_pmu_disable_virt();
640 static int svm_hardware_enable(void)
643 struct svm_cpu_data
*sd
;
645 struct desc_ptr gdt_descr
;
646 struct desc_struct
*gdt
;
647 int me
= raw_smp_processor_id();
649 rdmsrl(MSR_EFER
, efer
);
650 if (efer
& EFER_SVME
)
654 pr_err("%s: err EOPNOTSUPP on %d\n", __func__
, me
);
657 sd
= per_cpu(svm_data
, me
);
659 pr_err("%s: svm_data is NULL on %d\n", __func__
, me
);
663 sd
->asid_generation
= 1;
664 sd
->max_asid
= cpuid_ebx(SVM_CPUID_FUNC
) - 1;
665 sd
->next_asid
= sd
->max_asid
+ 1;
667 native_store_gdt(&gdt_descr
);
668 gdt
= (struct desc_struct
*)gdt_descr
.address
;
669 sd
->tss_desc
= (struct kvm_ldttss_desc
*)(gdt
+ GDT_ENTRY_TSS
);
671 wrmsrl(MSR_EFER
, efer
| EFER_SVME
);
673 wrmsrl(MSR_VM_HSAVE_PA
, page_to_pfn(sd
->save_area
) << PAGE_SHIFT
);
675 if (static_cpu_has(X86_FEATURE_TSCRATEMSR
)) {
676 wrmsrl(MSR_AMD64_TSC_RATIO
, TSC_RATIO_DEFAULT
);
677 __this_cpu_write(current_tsc_ratio
, TSC_RATIO_DEFAULT
);
684 * Note that it is possible to have a system with mixed processor
685 * revisions and therefore different OSVW bits. If bits are not the same
686 * on different processors then choose the worst case (i.e. if erratum
687 * is present on one processor and not on another then assume that the
688 * erratum is present everywhere).
690 if (cpu_has(&boot_cpu_data
, X86_FEATURE_OSVW
)) {
691 uint64_t len
, status
= 0;
694 len
= native_read_msr_safe(MSR_AMD64_OSVW_ID_LENGTH
, &err
);
696 status
= native_read_msr_safe(MSR_AMD64_OSVW_STATUS
,
700 osvw_status
= osvw_len
= 0;
704 osvw_status
|= status
;
705 osvw_status
&= (1ULL << osvw_len
) - 1;
708 osvw_status
= osvw_len
= 0;
710 svm_init_erratum_383();
712 amd_pmu_enable_virt();
717 static void svm_cpu_uninit(int cpu
)
719 struct svm_cpu_data
*sd
= per_cpu(svm_data
, raw_smp_processor_id());
724 per_cpu(svm_data
, raw_smp_processor_id()) = NULL
;
725 __free_page(sd
->save_area
);
729 static int svm_cpu_init(int cpu
)
731 struct svm_cpu_data
*sd
;
734 sd
= kzalloc(sizeof(struct svm_cpu_data
), GFP_KERNEL
);
738 sd
->save_area
= alloc_page(GFP_KERNEL
);
743 per_cpu(svm_data
, cpu
) = sd
;
753 static bool valid_msr_intercept(u32 index
)
757 for (i
= 0; direct_access_msrs
[i
].index
!= MSR_INVALID
; i
++)
758 if (direct_access_msrs
[i
].index
== index
)
764 static void set_msr_interception(u32
*msrpm
, unsigned msr
,
767 u8 bit_read
, bit_write
;
772 * If this warning triggers extend the direct_access_msrs list at the
773 * beginning of the file
775 WARN_ON(!valid_msr_intercept(msr
));
777 offset
= svm_msrpm_offset(msr
);
778 bit_read
= 2 * (msr
& 0x0f);
779 bit_write
= 2 * (msr
& 0x0f) + 1;
782 BUG_ON(offset
== MSR_INVALID
);
784 read
? clear_bit(bit_read
, &tmp
) : set_bit(bit_read
, &tmp
);
785 write
? clear_bit(bit_write
, &tmp
) : set_bit(bit_write
, &tmp
);
790 static void svm_vcpu_init_msrpm(u32
*msrpm
)
794 memset(msrpm
, 0xff, PAGE_SIZE
* (1 << MSRPM_ALLOC_ORDER
));
796 for (i
= 0; direct_access_msrs
[i
].index
!= MSR_INVALID
; i
++) {
797 if (!direct_access_msrs
[i
].always
)
800 set_msr_interception(msrpm
, direct_access_msrs
[i
].index
, 1, 1);
804 static void add_msr_offset(u32 offset
)
808 for (i
= 0; i
< MSRPM_OFFSETS
; ++i
) {
810 /* Offset already in list? */
811 if (msrpm_offsets
[i
] == offset
)
814 /* Slot used by another offset? */
815 if (msrpm_offsets
[i
] != MSR_INVALID
)
818 /* Add offset to list */
819 msrpm_offsets
[i
] = offset
;
825 * If this BUG triggers the msrpm_offsets table has an overflow. Just
826 * increase MSRPM_OFFSETS in this case.
831 static void init_msrpm_offsets(void)
835 memset(msrpm_offsets
, 0xff, sizeof(msrpm_offsets
));
837 for (i
= 0; direct_access_msrs
[i
].index
!= MSR_INVALID
; i
++) {
840 offset
= svm_msrpm_offset(direct_access_msrs
[i
].index
);
841 BUG_ON(offset
== MSR_INVALID
);
843 add_msr_offset(offset
);
847 static void svm_enable_lbrv(struct vcpu_svm
*svm
)
849 u32
*msrpm
= svm
->msrpm
;
851 svm
->vmcb
->control
.lbr_ctl
= 1;
852 set_msr_interception(msrpm
, MSR_IA32_LASTBRANCHFROMIP
, 1, 1);
853 set_msr_interception(msrpm
, MSR_IA32_LASTBRANCHTOIP
, 1, 1);
854 set_msr_interception(msrpm
, MSR_IA32_LASTINTFROMIP
, 1, 1);
855 set_msr_interception(msrpm
, MSR_IA32_LASTINTTOIP
, 1, 1);
858 static void svm_disable_lbrv(struct vcpu_svm
*svm
)
860 u32
*msrpm
= svm
->msrpm
;
862 svm
->vmcb
->control
.lbr_ctl
= 0;
863 set_msr_interception(msrpm
, MSR_IA32_LASTBRANCHFROMIP
, 0, 0);
864 set_msr_interception(msrpm
, MSR_IA32_LASTBRANCHTOIP
, 0, 0);
865 set_msr_interception(msrpm
, MSR_IA32_LASTINTFROMIP
, 0, 0);
866 set_msr_interception(msrpm
, MSR_IA32_LASTINTTOIP
, 0, 0);
869 #define MTRR_TYPE_UC_MINUS 7
870 #define MTRR2PROTVAL_INVALID 0xff
872 static u8 mtrr2protval
[8];
874 static u8
fallback_mtrr_type(int mtrr
)
877 * WT and WP aren't always available in the host PAT. Treat
878 * them as UC and UC- respectively. Everything else should be
883 case MTRR_TYPE_WRTHROUGH
:
884 return MTRR_TYPE_UNCACHABLE
;
885 case MTRR_TYPE_WRPROT
:
886 return MTRR_TYPE_UC_MINUS
;
892 static void build_mtrr2protval(void)
897 for (i
= 0; i
< 8; i
++)
898 mtrr2protval
[i
] = MTRR2PROTVAL_INVALID
;
900 /* Ignore the invalid MTRR types. */
905 * Use host PAT value to figure out the mapping from guest MTRR
906 * values to nested page table PAT/PCD/PWT values. We do not
907 * want to change the host PAT value every time we enter the
910 rdmsrl(MSR_IA32_CR_PAT
, pat
);
911 for (i
= 0; i
< 8; i
++) {
912 u8 mtrr
= pat
>> (8 * i
);
914 if (mtrr2protval
[mtrr
] == MTRR2PROTVAL_INVALID
)
915 mtrr2protval
[mtrr
] = __cm_idx2pte(i
);
918 for (i
= 0; i
< 8; i
++) {
919 if (mtrr2protval
[i
] == MTRR2PROTVAL_INVALID
) {
920 u8 fallback
= fallback_mtrr_type(i
);
921 mtrr2protval
[i
] = mtrr2protval
[fallback
];
922 BUG_ON(mtrr2protval
[i
] == MTRR2PROTVAL_INVALID
);
927 static __init
int svm_hardware_setup(void)
930 struct page
*iopm_pages
;
934 iopm_pages
= alloc_pages(GFP_KERNEL
, IOPM_ALLOC_ORDER
);
939 iopm_va
= page_address(iopm_pages
);
940 memset(iopm_va
, 0xff, PAGE_SIZE
* (1 << IOPM_ALLOC_ORDER
));
941 iopm_base
= page_to_pfn(iopm_pages
) << PAGE_SHIFT
;
943 init_msrpm_offsets();
945 if (boot_cpu_has(X86_FEATURE_NX
))
946 kvm_enable_efer_bits(EFER_NX
);
948 if (boot_cpu_has(X86_FEATURE_FXSR_OPT
))
949 kvm_enable_efer_bits(EFER_FFXSR
);
951 if (boot_cpu_has(X86_FEATURE_TSCRATEMSR
)) {
954 kvm_has_tsc_control
= true;
957 * Make sure the user can only configure tsc_khz values that
958 * fit into a signed integer.
959 * A min value is not calculated needed because it will always
960 * be 1 on all machines and a value of 0 is used to disable
961 * tsc-scaling for the vcpu.
963 max
= min(0x7fffffffULL
, __scale_tsc(tsc_khz
, TSC_RATIO_MAX
));
965 kvm_max_guest_tsc_khz
= max
;
969 printk(KERN_INFO
"kvm: Nested Virtualization enabled\n");
970 kvm_enable_efer_bits(EFER_SVME
| EFER_LMSLE
);
973 for_each_possible_cpu(cpu
) {
974 r
= svm_cpu_init(cpu
);
979 if (!boot_cpu_has(X86_FEATURE_NPT
))
982 if (npt_enabled
&& !npt
) {
983 printk(KERN_INFO
"kvm: Nested Paging disabled\n");
988 printk(KERN_INFO
"kvm: Nested Paging enabled\n");
993 build_mtrr2protval();
997 __free_pages(iopm_pages
, IOPM_ALLOC_ORDER
);
1002 static __exit
void svm_hardware_unsetup(void)
1006 for_each_possible_cpu(cpu
)
1007 svm_cpu_uninit(cpu
);
1009 __free_pages(pfn_to_page(iopm_base
>> PAGE_SHIFT
), IOPM_ALLOC_ORDER
);
1013 static void init_seg(struct vmcb_seg
*seg
)
1016 seg
->attrib
= SVM_SELECTOR_P_MASK
| SVM_SELECTOR_S_MASK
|
1017 SVM_SELECTOR_WRITE_MASK
; /* Read/Write Data Segment */
1018 seg
->limit
= 0xffff;
1022 static void init_sys_seg(struct vmcb_seg
*seg
, uint32_t type
)
1025 seg
->attrib
= SVM_SELECTOR_P_MASK
| type
;
1026 seg
->limit
= 0xffff;
1030 static u64
__scale_tsc(u64 ratio
, u64 tsc
)
1032 u64 mult
, frac
, _tsc
;
1035 frac
= ratio
& ((1ULL << 32) - 1);
1039 _tsc
+= (tsc
>> 32) * frac
;
1040 _tsc
+= ((tsc
& ((1ULL << 32) - 1)) * frac
) >> 32;
1045 static u64
svm_scale_tsc(struct kvm_vcpu
*vcpu
, u64 tsc
)
1047 struct vcpu_svm
*svm
= to_svm(vcpu
);
1050 if (svm
->tsc_ratio
!= TSC_RATIO_DEFAULT
)
1051 _tsc
= __scale_tsc(svm
->tsc_ratio
, tsc
);
1056 static void svm_set_tsc_khz(struct kvm_vcpu
*vcpu
, u32 user_tsc_khz
, bool scale
)
1058 struct vcpu_svm
*svm
= to_svm(vcpu
);
1062 /* Guest TSC same frequency as host TSC? */
1064 svm
->tsc_ratio
= TSC_RATIO_DEFAULT
;
1068 /* TSC scaling supported? */
1069 if (!boot_cpu_has(X86_FEATURE_TSCRATEMSR
)) {
1070 if (user_tsc_khz
> tsc_khz
) {
1071 vcpu
->arch
.tsc_catchup
= 1;
1072 vcpu
->arch
.tsc_always_catchup
= 1;
1074 WARN(1, "user requested TSC rate below hardware speed\n");
1080 /* TSC scaling required - calculate ratio */
1082 do_div(ratio
, tsc_khz
);
1084 if (ratio
== 0 || ratio
& TSC_RATIO_RSVD
) {
1085 WARN_ONCE(1, "Invalid TSC ratio - virtual-tsc-khz=%u\n",
1089 svm
->tsc_ratio
= ratio
;
1092 static u64
svm_read_tsc_offset(struct kvm_vcpu
*vcpu
)
1094 struct vcpu_svm
*svm
= to_svm(vcpu
);
1096 return svm
->vmcb
->control
.tsc_offset
;
1099 static void svm_write_tsc_offset(struct kvm_vcpu
*vcpu
, u64 offset
)
1101 struct vcpu_svm
*svm
= to_svm(vcpu
);
1102 u64 g_tsc_offset
= 0;
1104 if (is_guest_mode(vcpu
)) {
1105 g_tsc_offset
= svm
->vmcb
->control
.tsc_offset
-
1106 svm
->nested
.hsave
->control
.tsc_offset
;
1107 svm
->nested
.hsave
->control
.tsc_offset
= offset
;
1109 trace_kvm_write_tsc_offset(vcpu
->vcpu_id
,
1110 svm
->vmcb
->control
.tsc_offset
,
1113 svm
->vmcb
->control
.tsc_offset
= offset
+ g_tsc_offset
;
1115 mark_dirty(svm
->vmcb
, VMCB_INTERCEPTS
);
1118 static void svm_adjust_tsc_offset(struct kvm_vcpu
*vcpu
, s64 adjustment
, bool host
)
1120 struct vcpu_svm
*svm
= to_svm(vcpu
);
1123 if (svm
->tsc_ratio
!= TSC_RATIO_DEFAULT
)
1124 WARN_ON(adjustment
< 0);
1125 adjustment
= svm_scale_tsc(vcpu
, (u64
)adjustment
);
1128 svm
->vmcb
->control
.tsc_offset
+= adjustment
;
1129 if (is_guest_mode(vcpu
))
1130 svm
->nested
.hsave
->control
.tsc_offset
+= adjustment
;
1132 trace_kvm_write_tsc_offset(vcpu
->vcpu_id
,
1133 svm
->vmcb
->control
.tsc_offset
- adjustment
,
1134 svm
->vmcb
->control
.tsc_offset
);
1136 mark_dirty(svm
->vmcb
, VMCB_INTERCEPTS
);
1139 static u64
svm_compute_tsc_offset(struct kvm_vcpu
*vcpu
, u64 target_tsc
)
1143 tsc
= svm_scale_tsc(vcpu
, rdtsc());
1145 return target_tsc
- tsc
;
1148 static void svm_set_guest_pat(struct vcpu_svm
*svm
, u64
*g_pat
)
1150 struct kvm_vcpu
*vcpu
= &svm
->vcpu
;
1152 /* Unlike Intel, AMD takes the guest's CR0.CD into account.
1154 * AMD does not have IPAT. To emulate it for the case of guests
1155 * with no assigned devices, just set everything to WB. If guests
1156 * have assigned devices, however, we cannot force WB for RAM
1157 * pages only, so use the guest PAT directly.
1159 if (!kvm_arch_has_assigned_device(vcpu
->kvm
))
1160 *g_pat
= 0x0606060606060606;
1162 *g_pat
= vcpu
->arch
.pat
;
1165 static u64
svm_get_mt_mask(struct kvm_vcpu
*vcpu
, gfn_t gfn
, bool is_mmio
)
1170 * 1. MMIO: trust guest MTRR, so same as item 3.
1171 * 2. No passthrough: always map as WB, and force guest PAT to WB as well
1172 * 3. Passthrough: can't guarantee the result, try to trust guest.
1174 if (!is_mmio
&& !kvm_arch_has_assigned_device(vcpu
->kvm
))
1177 if (!kvm_check_has_quirk(vcpu
->kvm
, KVM_X86_QUIRK_CD_NW_CLEARED
) &&
1178 kvm_read_cr0(vcpu
) & X86_CR0_CD
)
1179 return _PAGE_NOCACHE
;
1181 mtrr
= kvm_mtrr_get_guest_memory_type(vcpu
, gfn
);
1182 return mtrr2protval
[mtrr
];
1185 static void init_vmcb(struct vcpu_svm
*svm
, bool init_event
)
1187 struct vmcb_control_area
*control
= &svm
->vmcb
->control
;
1188 struct vmcb_save_area
*save
= &svm
->vmcb
->save
;
1190 svm
->vcpu
.fpu_active
= 1;
1191 svm
->vcpu
.arch
.hflags
= 0;
1193 set_cr_intercept(svm
, INTERCEPT_CR0_READ
);
1194 set_cr_intercept(svm
, INTERCEPT_CR3_READ
);
1195 set_cr_intercept(svm
, INTERCEPT_CR4_READ
);
1196 set_cr_intercept(svm
, INTERCEPT_CR0_WRITE
);
1197 set_cr_intercept(svm
, INTERCEPT_CR3_WRITE
);
1198 set_cr_intercept(svm
, INTERCEPT_CR4_WRITE
);
1199 set_cr_intercept(svm
, INTERCEPT_CR8_WRITE
);
1201 set_dr_intercepts(svm
);
1203 set_exception_intercept(svm
, PF_VECTOR
);
1204 set_exception_intercept(svm
, UD_VECTOR
);
1205 set_exception_intercept(svm
, MC_VECTOR
);
1207 set_intercept(svm
, INTERCEPT_INTR
);
1208 set_intercept(svm
, INTERCEPT_NMI
);
1209 set_intercept(svm
, INTERCEPT_SMI
);
1210 set_intercept(svm
, INTERCEPT_SELECTIVE_CR0
);
1211 set_intercept(svm
, INTERCEPT_RDPMC
);
1212 set_intercept(svm
, INTERCEPT_CPUID
);
1213 set_intercept(svm
, INTERCEPT_INVD
);
1214 set_intercept(svm
, INTERCEPT_HLT
);
1215 set_intercept(svm
, INTERCEPT_INVLPG
);
1216 set_intercept(svm
, INTERCEPT_INVLPGA
);
1217 set_intercept(svm
, INTERCEPT_IOIO_PROT
);
1218 set_intercept(svm
, INTERCEPT_MSR_PROT
);
1219 set_intercept(svm
, INTERCEPT_TASK_SWITCH
);
1220 set_intercept(svm
, INTERCEPT_SHUTDOWN
);
1221 set_intercept(svm
, INTERCEPT_VMRUN
);
1222 set_intercept(svm
, INTERCEPT_VMMCALL
);
1223 set_intercept(svm
, INTERCEPT_VMLOAD
);
1224 set_intercept(svm
, INTERCEPT_VMSAVE
);
1225 set_intercept(svm
, INTERCEPT_STGI
);
1226 set_intercept(svm
, INTERCEPT_CLGI
);
1227 set_intercept(svm
, INTERCEPT_SKINIT
);
1228 set_intercept(svm
, INTERCEPT_WBINVD
);
1229 set_intercept(svm
, INTERCEPT_MONITOR
);
1230 set_intercept(svm
, INTERCEPT_MWAIT
);
1231 set_intercept(svm
, INTERCEPT_XSETBV
);
1233 control
->iopm_base_pa
= iopm_base
;
1234 control
->msrpm_base_pa
= __pa(svm
->msrpm
);
1235 control
->int_ctl
= V_INTR_MASKING_MASK
;
1237 init_seg(&save
->es
);
1238 init_seg(&save
->ss
);
1239 init_seg(&save
->ds
);
1240 init_seg(&save
->fs
);
1241 init_seg(&save
->gs
);
1243 save
->cs
.selector
= 0xf000;
1244 save
->cs
.base
= 0xffff0000;
1245 /* Executable/Readable Code Segment */
1246 save
->cs
.attrib
= SVM_SELECTOR_READ_MASK
| SVM_SELECTOR_P_MASK
|
1247 SVM_SELECTOR_S_MASK
| SVM_SELECTOR_CODE_MASK
;
1248 save
->cs
.limit
= 0xffff;
1250 save
->gdtr
.limit
= 0xffff;
1251 save
->idtr
.limit
= 0xffff;
1253 init_sys_seg(&save
->ldtr
, SEG_TYPE_LDT
);
1254 init_sys_seg(&save
->tr
, SEG_TYPE_BUSY_TSS16
);
1257 svm_set_efer(&svm
->vcpu
, 0);
1258 save
->dr6
= 0xffff0ff0;
1259 kvm_set_rflags(&svm
->vcpu
, 2);
1260 save
->rip
= 0x0000fff0;
1261 svm
->vcpu
.arch
.regs
[VCPU_REGS_RIP
] = save
->rip
;
1264 * svm_set_cr0() sets PG and WP and clears NW and CD on save->cr0.
1265 * It also updates the guest-visible cr0 value.
1267 svm_set_cr0(&svm
->vcpu
, X86_CR0_NW
| X86_CR0_CD
| X86_CR0_ET
);
1268 kvm_mmu_reset_context(&svm
->vcpu
);
1270 save
->cr4
= X86_CR4_PAE
;
1274 /* Setup VMCB for Nested Paging */
1275 control
->nested_ctl
= 1;
1276 clr_intercept(svm
, INTERCEPT_INVLPG
);
1277 clr_exception_intercept(svm
, PF_VECTOR
);
1278 clr_cr_intercept(svm
, INTERCEPT_CR3_READ
);
1279 clr_cr_intercept(svm
, INTERCEPT_CR3_WRITE
);
1280 save
->g_pat
= svm
->vcpu
.arch
.pat
;
1281 svm_set_guest_pat(svm
, &save
->g_pat
);
1285 svm
->asid_generation
= 0;
1287 svm
->nested
.vmcb
= 0;
1288 svm
->vcpu
.arch
.hflags
= 0;
1290 if (boot_cpu_has(X86_FEATURE_PAUSEFILTER
)) {
1291 control
->pause_filter_count
= 3000;
1292 set_intercept(svm
, INTERCEPT_PAUSE
);
1295 mark_all_dirty(svm
->vmcb
);
1300 static void svm_vcpu_reset(struct kvm_vcpu
*vcpu
, bool init_event
)
1302 struct vcpu_svm
*svm
= to_svm(vcpu
);
1307 svm
->vcpu
.arch
.apic_base
= APIC_DEFAULT_PHYS_BASE
|
1308 MSR_IA32_APICBASE_ENABLE
;
1309 if (kvm_vcpu_is_reset_bsp(&svm
->vcpu
))
1310 svm
->vcpu
.arch
.apic_base
|= MSR_IA32_APICBASE_BSP
;
1312 init_vmcb(svm
, init_event
);
1314 kvm_cpuid(vcpu
, &eax
, &dummy
, &dummy
, &dummy
);
1315 kvm_register_write(vcpu
, VCPU_REGS_RDX
, eax
);
1318 static struct kvm_vcpu
*svm_create_vcpu(struct kvm
*kvm
, unsigned int id
)
1320 struct vcpu_svm
*svm
;
1322 struct page
*msrpm_pages
;
1323 struct page
*hsave_page
;
1324 struct page
*nested_msrpm_pages
;
1327 svm
= kmem_cache_zalloc(kvm_vcpu_cache
, GFP_KERNEL
);
1333 svm
->tsc_ratio
= TSC_RATIO_DEFAULT
;
1335 err
= kvm_vcpu_init(&svm
->vcpu
, kvm
, id
);
1340 page
= alloc_page(GFP_KERNEL
);
1344 msrpm_pages
= alloc_pages(GFP_KERNEL
, MSRPM_ALLOC_ORDER
);
1348 nested_msrpm_pages
= alloc_pages(GFP_KERNEL
, MSRPM_ALLOC_ORDER
);
1349 if (!nested_msrpm_pages
)
1352 hsave_page
= alloc_page(GFP_KERNEL
);
1356 svm
->nested
.hsave
= page_address(hsave_page
);
1358 svm
->msrpm
= page_address(msrpm_pages
);
1359 svm_vcpu_init_msrpm(svm
->msrpm
);
1361 svm
->nested
.msrpm
= page_address(nested_msrpm_pages
);
1362 svm_vcpu_init_msrpm(svm
->nested
.msrpm
);
1364 svm
->vmcb
= page_address(page
);
1365 clear_page(svm
->vmcb
);
1366 svm
->vmcb_pa
= page_to_pfn(page
) << PAGE_SHIFT
;
1367 svm
->asid_generation
= 0;
1368 init_vmcb(svm
, false);
1370 svm_init_osvw(&svm
->vcpu
);
1375 __free_pages(nested_msrpm_pages
, MSRPM_ALLOC_ORDER
);
1377 __free_pages(msrpm_pages
, MSRPM_ALLOC_ORDER
);
1381 kvm_vcpu_uninit(&svm
->vcpu
);
1383 kmem_cache_free(kvm_vcpu_cache
, svm
);
1385 return ERR_PTR(err
);
1388 static void svm_free_vcpu(struct kvm_vcpu
*vcpu
)
1390 struct vcpu_svm
*svm
= to_svm(vcpu
);
1392 __free_page(pfn_to_page(svm
->vmcb_pa
>> PAGE_SHIFT
));
1393 __free_pages(virt_to_page(svm
->msrpm
), MSRPM_ALLOC_ORDER
);
1394 __free_page(virt_to_page(svm
->nested
.hsave
));
1395 __free_pages(virt_to_page(svm
->nested
.msrpm
), MSRPM_ALLOC_ORDER
);
1396 kvm_vcpu_uninit(vcpu
);
1397 kmem_cache_free(kvm_vcpu_cache
, svm
);
1400 static void svm_vcpu_load(struct kvm_vcpu
*vcpu
, int cpu
)
1402 struct vcpu_svm
*svm
= to_svm(vcpu
);
1405 if (unlikely(cpu
!= vcpu
->cpu
)) {
1406 svm
->asid_generation
= 0;
1407 mark_all_dirty(svm
->vmcb
);
1410 #ifdef CONFIG_X86_64
1411 rdmsrl(MSR_GS_BASE
, to_svm(vcpu
)->host
.gs_base
);
1413 savesegment(fs
, svm
->host
.fs
);
1414 savesegment(gs
, svm
->host
.gs
);
1415 svm
->host
.ldt
= kvm_read_ldt();
1417 for (i
= 0; i
< NR_HOST_SAVE_USER_MSRS
; i
++)
1418 rdmsrl(host_save_user_msrs
[i
], svm
->host_user_msrs
[i
]);
1420 if (static_cpu_has(X86_FEATURE_TSCRATEMSR
) &&
1421 svm
->tsc_ratio
!= __this_cpu_read(current_tsc_ratio
)) {
1422 __this_cpu_write(current_tsc_ratio
, svm
->tsc_ratio
);
1423 wrmsrl(MSR_AMD64_TSC_RATIO
, svm
->tsc_ratio
);
1427 static void svm_vcpu_put(struct kvm_vcpu
*vcpu
)
1429 struct vcpu_svm
*svm
= to_svm(vcpu
);
1432 ++vcpu
->stat
.host_state_reload
;
1433 kvm_load_ldt(svm
->host
.ldt
);
1434 #ifdef CONFIG_X86_64
1435 loadsegment(fs
, svm
->host
.fs
);
1436 wrmsrl(MSR_KERNEL_GS_BASE
, current
->thread
.gs
);
1437 load_gs_index(svm
->host
.gs
);
1439 #ifdef CONFIG_X86_32_LAZY_GS
1440 loadsegment(gs
, svm
->host
.gs
);
1443 for (i
= 0; i
< NR_HOST_SAVE_USER_MSRS
; i
++)
1444 wrmsrl(host_save_user_msrs
[i
], svm
->host_user_msrs
[i
]);
1447 static unsigned long svm_get_rflags(struct kvm_vcpu
*vcpu
)
1449 return to_svm(vcpu
)->vmcb
->save
.rflags
;
1452 static void svm_set_rflags(struct kvm_vcpu
*vcpu
, unsigned long rflags
)
1455 * Any change of EFLAGS.VM is accompained by a reload of SS
1456 * (caused by either a task switch or an inter-privilege IRET),
1457 * so we do not need to update the CPL here.
1459 to_svm(vcpu
)->vmcb
->save
.rflags
= rflags
;
1462 static void svm_cache_reg(struct kvm_vcpu
*vcpu
, enum kvm_reg reg
)
1465 case VCPU_EXREG_PDPTR
:
1466 BUG_ON(!npt_enabled
);
1467 load_pdptrs(vcpu
, vcpu
->arch
.walk_mmu
, kvm_read_cr3(vcpu
));
1474 static void svm_set_vintr(struct vcpu_svm
*svm
)
1476 set_intercept(svm
, INTERCEPT_VINTR
);
1479 static void svm_clear_vintr(struct vcpu_svm
*svm
)
1481 clr_intercept(svm
, INTERCEPT_VINTR
);
1484 static struct vmcb_seg
*svm_seg(struct kvm_vcpu
*vcpu
, int seg
)
1486 struct vmcb_save_area
*save
= &to_svm(vcpu
)->vmcb
->save
;
1489 case VCPU_SREG_CS
: return &save
->cs
;
1490 case VCPU_SREG_DS
: return &save
->ds
;
1491 case VCPU_SREG_ES
: return &save
->es
;
1492 case VCPU_SREG_FS
: return &save
->fs
;
1493 case VCPU_SREG_GS
: return &save
->gs
;
1494 case VCPU_SREG_SS
: return &save
->ss
;
1495 case VCPU_SREG_TR
: return &save
->tr
;
1496 case VCPU_SREG_LDTR
: return &save
->ldtr
;
1502 static u64
svm_get_segment_base(struct kvm_vcpu
*vcpu
, int seg
)
1504 struct vmcb_seg
*s
= svm_seg(vcpu
, seg
);
1509 static void svm_get_segment(struct kvm_vcpu
*vcpu
,
1510 struct kvm_segment
*var
, int seg
)
1512 struct vmcb_seg
*s
= svm_seg(vcpu
, seg
);
1514 var
->base
= s
->base
;
1515 var
->limit
= s
->limit
;
1516 var
->selector
= s
->selector
;
1517 var
->type
= s
->attrib
& SVM_SELECTOR_TYPE_MASK
;
1518 var
->s
= (s
->attrib
>> SVM_SELECTOR_S_SHIFT
) & 1;
1519 var
->dpl
= (s
->attrib
>> SVM_SELECTOR_DPL_SHIFT
) & 3;
1520 var
->present
= (s
->attrib
>> SVM_SELECTOR_P_SHIFT
) & 1;
1521 var
->avl
= (s
->attrib
>> SVM_SELECTOR_AVL_SHIFT
) & 1;
1522 var
->l
= (s
->attrib
>> SVM_SELECTOR_L_SHIFT
) & 1;
1523 var
->db
= (s
->attrib
>> SVM_SELECTOR_DB_SHIFT
) & 1;
1526 * AMD CPUs circa 2014 track the G bit for all segments except CS.
1527 * However, the SVM spec states that the G bit is not observed by the
1528 * CPU, and some VMware virtual CPUs drop the G bit for all segments.
1529 * So let's synthesize a legal G bit for all segments, this helps
1530 * running KVM nested. It also helps cross-vendor migration, because
1531 * Intel's vmentry has a check on the 'G' bit.
1533 var
->g
= s
->limit
> 0xfffff;
1536 * AMD's VMCB does not have an explicit unusable field, so emulate it
1537 * for cross vendor migration purposes by "not present"
1539 var
->unusable
= !var
->present
|| (var
->type
== 0);
1544 * Work around a bug where the busy flag in the tr selector
1554 * The accessed bit must always be set in the segment
1555 * descriptor cache, although it can be cleared in the
1556 * descriptor, the cached bit always remains at 1. Since
1557 * Intel has a check on this, set it here to support
1558 * cross-vendor migration.
1565 * On AMD CPUs sometimes the DB bit in the segment
1566 * descriptor is left as 1, although the whole segment has
1567 * been made unusable. Clear it here to pass an Intel VMX
1568 * entry check when cross vendor migrating.
1572 var
->dpl
= to_svm(vcpu
)->vmcb
->save
.cpl
;
1577 static int svm_get_cpl(struct kvm_vcpu
*vcpu
)
1579 struct vmcb_save_area
*save
= &to_svm(vcpu
)->vmcb
->save
;
1584 static void svm_get_idt(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
)
1586 struct vcpu_svm
*svm
= to_svm(vcpu
);
1588 dt
->size
= svm
->vmcb
->save
.idtr
.limit
;
1589 dt
->address
= svm
->vmcb
->save
.idtr
.base
;
1592 static void svm_set_idt(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
)
1594 struct vcpu_svm
*svm
= to_svm(vcpu
);
1596 svm
->vmcb
->save
.idtr
.limit
= dt
->size
;
1597 svm
->vmcb
->save
.idtr
.base
= dt
->address
;
1598 mark_dirty(svm
->vmcb
, VMCB_DT
);
1601 static void svm_get_gdt(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
)
1603 struct vcpu_svm
*svm
= to_svm(vcpu
);
1605 dt
->size
= svm
->vmcb
->save
.gdtr
.limit
;
1606 dt
->address
= svm
->vmcb
->save
.gdtr
.base
;
1609 static void svm_set_gdt(struct kvm_vcpu
*vcpu
, struct desc_ptr
*dt
)
1611 struct vcpu_svm
*svm
= to_svm(vcpu
);
1613 svm
->vmcb
->save
.gdtr
.limit
= dt
->size
;
1614 svm
->vmcb
->save
.gdtr
.base
= dt
->address
;
1615 mark_dirty(svm
->vmcb
, VMCB_DT
);
1618 static void svm_decache_cr0_guest_bits(struct kvm_vcpu
*vcpu
)
1622 static void svm_decache_cr3(struct kvm_vcpu
*vcpu
)
1626 static void svm_decache_cr4_guest_bits(struct kvm_vcpu
*vcpu
)
1630 static void update_cr0_intercept(struct vcpu_svm
*svm
)
1632 ulong gcr0
= svm
->vcpu
.arch
.cr0
;
1633 u64
*hcr0
= &svm
->vmcb
->save
.cr0
;
1635 if (!svm
->vcpu
.fpu_active
)
1636 *hcr0
|= SVM_CR0_SELECTIVE_MASK
;
1638 *hcr0
= (*hcr0
& ~SVM_CR0_SELECTIVE_MASK
)
1639 | (gcr0
& SVM_CR0_SELECTIVE_MASK
);
1641 mark_dirty(svm
->vmcb
, VMCB_CR
);
1643 if (gcr0
== *hcr0
&& svm
->vcpu
.fpu_active
) {
1644 clr_cr_intercept(svm
, INTERCEPT_CR0_READ
);
1645 clr_cr_intercept(svm
, INTERCEPT_CR0_WRITE
);
1647 set_cr_intercept(svm
, INTERCEPT_CR0_READ
);
1648 set_cr_intercept(svm
, INTERCEPT_CR0_WRITE
);
1652 static void svm_set_cr0(struct kvm_vcpu
*vcpu
, unsigned long cr0
)
1654 struct vcpu_svm
*svm
= to_svm(vcpu
);
1656 #ifdef CONFIG_X86_64
1657 if (vcpu
->arch
.efer
& EFER_LME
) {
1658 if (!is_paging(vcpu
) && (cr0
& X86_CR0_PG
)) {
1659 vcpu
->arch
.efer
|= EFER_LMA
;
1660 svm
->vmcb
->save
.efer
|= EFER_LMA
| EFER_LME
;
1663 if (is_paging(vcpu
) && !(cr0
& X86_CR0_PG
)) {
1664 vcpu
->arch
.efer
&= ~EFER_LMA
;
1665 svm
->vmcb
->save
.efer
&= ~(EFER_LMA
| EFER_LME
);
1669 vcpu
->arch
.cr0
= cr0
;
1672 cr0
|= X86_CR0_PG
| X86_CR0_WP
;
1674 if (!vcpu
->fpu_active
)
1677 /* These are emulated via page tables. */
1678 cr0
&= ~(X86_CR0_CD
| X86_CR0_NW
);
1680 svm
->vmcb
->save
.cr0
= cr0
;
1681 mark_dirty(svm
->vmcb
, VMCB_CR
);
1682 update_cr0_intercept(svm
);
1685 static int svm_set_cr4(struct kvm_vcpu
*vcpu
, unsigned long cr4
)
1687 unsigned long host_cr4_mce
= cr4_read_shadow() & X86_CR4_MCE
;
1688 unsigned long old_cr4
= to_svm(vcpu
)->vmcb
->save
.cr4
;
1690 if (cr4
& X86_CR4_VMXE
)
1693 if (npt_enabled
&& ((old_cr4
^ cr4
) & X86_CR4_PGE
))
1694 svm_flush_tlb(vcpu
);
1696 vcpu
->arch
.cr4
= cr4
;
1699 cr4
|= host_cr4_mce
;
1700 to_svm(vcpu
)->vmcb
->save
.cr4
= cr4
;
1701 mark_dirty(to_svm(vcpu
)->vmcb
, VMCB_CR
);
1705 static void svm_set_segment(struct kvm_vcpu
*vcpu
,
1706 struct kvm_segment
*var
, int seg
)
1708 struct vcpu_svm
*svm
= to_svm(vcpu
);
1709 struct vmcb_seg
*s
= svm_seg(vcpu
, seg
);
1711 s
->base
= var
->base
;
1712 s
->limit
= var
->limit
;
1713 s
->selector
= var
->selector
;
1717 s
->attrib
= (var
->type
& SVM_SELECTOR_TYPE_MASK
);
1718 s
->attrib
|= (var
->s
& 1) << SVM_SELECTOR_S_SHIFT
;
1719 s
->attrib
|= (var
->dpl
& 3) << SVM_SELECTOR_DPL_SHIFT
;
1720 s
->attrib
|= (var
->present
& 1) << SVM_SELECTOR_P_SHIFT
;
1721 s
->attrib
|= (var
->avl
& 1) << SVM_SELECTOR_AVL_SHIFT
;
1722 s
->attrib
|= (var
->l
& 1) << SVM_SELECTOR_L_SHIFT
;
1723 s
->attrib
|= (var
->db
& 1) << SVM_SELECTOR_DB_SHIFT
;
1724 s
->attrib
|= (var
->g
& 1) << SVM_SELECTOR_G_SHIFT
;
1728 * This is always accurate, except if SYSRET returned to a segment
1729 * with SS.DPL != 3. Intel does not have this quirk, and always
1730 * forces SS.DPL to 3 on sysret, so we ignore that case; fixing it
1731 * would entail passing the CPL to userspace and back.
1733 if (seg
== VCPU_SREG_SS
)
1734 svm
->vmcb
->save
.cpl
= (s
->attrib
>> SVM_SELECTOR_DPL_SHIFT
) & 3;
1736 mark_dirty(svm
->vmcb
, VMCB_SEG
);
1739 static void update_db_bp_intercept(struct kvm_vcpu
*vcpu
)
1741 struct vcpu_svm
*svm
= to_svm(vcpu
);
1743 clr_exception_intercept(svm
, DB_VECTOR
);
1744 clr_exception_intercept(svm
, BP_VECTOR
);
1746 if (svm
->nmi_singlestep
)
1747 set_exception_intercept(svm
, DB_VECTOR
);
1749 if (vcpu
->guest_debug
& KVM_GUESTDBG_ENABLE
) {
1750 if (vcpu
->guest_debug
&
1751 (KVM_GUESTDBG_SINGLESTEP
| KVM_GUESTDBG_USE_HW_BP
))
1752 set_exception_intercept(svm
, DB_VECTOR
);
1753 if (vcpu
->guest_debug
& KVM_GUESTDBG_USE_SW_BP
)
1754 set_exception_intercept(svm
, BP_VECTOR
);
1756 vcpu
->guest_debug
= 0;
1759 static void new_asid(struct vcpu_svm
*svm
, struct svm_cpu_data
*sd
)
1761 if (sd
->next_asid
> sd
->max_asid
) {
1762 ++sd
->asid_generation
;
1764 svm
->vmcb
->control
.tlb_ctl
= TLB_CONTROL_FLUSH_ALL_ASID
;
1767 svm
->asid_generation
= sd
->asid_generation
;
1768 svm
->vmcb
->control
.asid
= sd
->next_asid
++;
1770 mark_dirty(svm
->vmcb
, VMCB_ASID
);
1773 static u64
svm_get_dr6(struct kvm_vcpu
*vcpu
)
1775 return to_svm(vcpu
)->vmcb
->save
.dr6
;
1778 static void svm_set_dr6(struct kvm_vcpu
*vcpu
, unsigned long value
)
1780 struct vcpu_svm
*svm
= to_svm(vcpu
);
1782 svm
->vmcb
->save
.dr6
= value
;
1783 mark_dirty(svm
->vmcb
, VMCB_DR
);
1786 static void svm_sync_dirty_debug_regs(struct kvm_vcpu
*vcpu
)
1788 struct vcpu_svm
*svm
= to_svm(vcpu
);
1790 get_debugreg(vcpu
->arch
.db
[0], 0);
1791 get_debugreg(vcpu
->arch
.db
[1], 1);
1792 get_debugreg(vcpu
->arch
.db
[2], 2);
1793 get_debugreg(vcpu
->arch
.db
[3], 3);
1794 vcpu
->arch
.dr6
= svm_get_dr6(vcpu
);
1795 vcpu
->arch
.dr7
= svm
->vmcb
->save
.dr7
;
1797 vcpu
->arch
.switch_db_regs
&= ~KVM_DEBUGREG_WONT_EXIT
;
1798 set_dr_intercepts(svm
);
1801 static void svm_set_dr7(struct kvm_vcpu
*vcpu
, unsigned long value
)
1803 struct vcpu_svm
*svm
= to_svm(vcpu
);
1805 svm
->vmcb
->save
.dr7
= value
;
1806 mark_dirty(svm
->vmcb
, VMCB_DR
);
1809 static int pf_interception(struct vcpu_svm
*svm
)
1811 u64 fault_address
= svm
->vmcb
->control
.exit_info_2
;
1815 switch (svm
->apf_reason
) {
1817 error_code
= svm
->vmcb
->control
.exit_info_1
;
1819 trace_kvm_page_fault(fault_address
, error_code
);
1820 if (!npt_enabled
&& kvm_event_needs_reinjection(&svm
->vcpu
))
1821 kvm_mmu_unprotect_page_virt(&svm
->vcpu
, fault_address
);
1822 r
= kvm_mmu_page_fault(&svm
->vcpu
, fault_address
, error_code
,
1823 svm
->vmcb
->control
.insn_bytes
,
1824 svm
->vmcb
->control
.insn_len
);
1826 case KVM_PV_REASON_PAGE_NOT_PRESENT
:
1827 svm
->apf_reason
= 0;
1828 local_irq_disable();
1829 kvm_async_pf_task_wait(fault_address
);
1832 case KVM_PV_REASON_PAGE_READY
:
1833 svm
->apf_reason
= 0;
1834 local_irq_disable();
1835 kvm_async_pf_task_wake(fault_address
);
1842 static int db_interception(struct vcpu_svm
*svm
)
1844 struct kvm_run
*kvm_run
= svm
->vcpu
.run
;
1846 if (!(svm
->vcpu
.guest_debug
&
1847 (KVM_GUESTDBG_SINGLESTEP
| KVM_GUESTDBG_USE_HW_BP
)) &&
1848 !svm
->nmi_singlestep
) {
1849 kvm_queue_exception(&svm
->vcpu
, DB_VECTOR
);
1853 if (svm
->nmi_singlestep
) {
1854 svm
->nmi_singlestep
= false;
1855 if (!(svm
->vcpu
.guest_debug
& KVM_GUESTDBG_SINGLESTEP
))
1856 svm
->vmcb
->save
.rflags
&=
1857 ~(X86_EFLAGS_TF
| X86_EFLAGS_RF
);
1858 update_db_bp_intercept(&svm
->vcpu
);
1861 if (svm
->vcpu
.guest_debug
&
1862 (KVM_GUESTDBG_SINGLESTEP
| KVM_GUESTDBG_USE_HW_BP
)) {
1863 kvm_run
->exit_reason
= KVM_EXIT_DEBUG
;
1864 kvm_run
->debug
.arch
.pc
=
1865 svm
->vmcb
->save
.cs
.base
+ svm
->vmcb
->save
.rip
;
1866 kvm_run
->debug
.arch
.exception
= DB_VECTOR
;
1873 static int bp_interception(struct vcpu_svm
*svm
)
1875 struct kvm_run
*kvm_run
= svm
->vcpu
.run
;
1877 kvm_run
->exit_reason
= KVM_EXIT_DEBUG
;
1878 kvm_run
->debug
.arch
.pc
= svm
->vmcb
->save
.cs
.base
+ svm
->vmcb
->save
.rip
;
1879 kvm_run
->debug
.arch
.exception
= BP_VECTOR
;
1883 static int ud_interception(struct vcpu_svm
*svm
)
1887 er
= emulate_instruction(&svm
->vcpu
, EMULTYPE_TRAP_UD
);
1888 if (er
!= EMULATE_DONE
)
1889 kvm_queue_exception(&svm
->vcpu
, UD_VECTOR
);
1893 static void svm_fpu_activate(struct kvm_vcpu
*vcpu
)
1895 struct vcpu_svm
*svm
= to_svm(vcpu
);
1897 clr_exception_intercept(svm
, NM_VECTOR
);
1899 svm
->vcpu
.fpu_active
= 1;
1900 update_cr0_intercept(svm
);
1903 static int nm_interception(struct vcpu_svm
*svm
)
1905 svm_fpu_activate(&svm
->vcpu
);
1909 static bool is_erratum_383(void)
1914 if (!erratum_383_found
)
1917 value
= native_read_msr_safe(MSR_IA32_MC0_STATUS
, &err
);
1921 /* Bit 62 may or may not be set for this mce */
1922 value
&= ~(1ULL << 62);
1924 if (value
!= 0xb600000000010015ULL
)
1927 /* Clear MCi_STATUS registers */
1928 for (i
= 0; i
< 6; ++i
)
1929 native_write_msr_safe(MSR_IA32_MCx_STATUS(i
), 0, 0);
1931 value
= native_read_msr_safe(MSR_IA32_MCG_STATUS
, &err
);
1935 value
&= ~(1ULL << 2);
1936 low
= lower_32_bits(value
);
1937 high
= upper_32_bits(value
);
1939 native_write_msr_safe(MSR_IA32_MCG_STATUS
, low
, high
);
1942 /* Flush tlb to evict multi-match entries */
1948 static void svm_handle_mce(struct vcpu_svm
*svm
)
1950 if (is_erratum_383()) {
1952 * Erratum 383 triggered. Guest state is corrupt so kill the
1955 pr_err("KVM: Guest triggered AMD Erratum 383\n");
1957 kvm_make_request(KVM_REQ_TRIPLE_FAULT
, &svm
->vcpu
);
1963 * On an #MC intercept the MCE handler is not called automatically in
1964 * the host. So do it by hand here.
1968 /* not sure if we ever come back to this point */
1973 static int mc_interception(struct vcpu_svm
*svm
)
1978 static int shutdown_interception(struct vcpu_svm
*svm
)
1980 struct kvm_run
*kvm_run
= svm
->vcpu
.run
;
1983 * VMCB is undefined after a SHUTDOWN intercept
1984 * so reinitialize it.
1986 clear_page(svm
->vmcb
);
1987 init_vmcb(svm
, false);
1989 kvm_run
->exit_reason
= KVM_EXIT_SHUTDOWN
;
1993 static int io_interception(struct vcpu_svm
*svm
)
1995 struct kvm_vcpu
*vcpu
= &svm
->vcpu
;
1996 u32 io_info
= svm
->vmcb
->control
.exit_info_1
; /* address size bug? */
1997 int size
, in
, string
;
2000 ++svm
->vcpu
.stat
.io_exits
;
2001 string
= (io_info
& SVM_IOIO_STR_MASK
) != 0;
2002 in
= (io_info
& SVM_IOIO_TYPE_MASK
) != 0;
2004 return emulate_instruction(vcpu
, 0) == EMULATE_DONE
;
2006 port
= io_info
>> 16;
2007 size
= (io_info
& SVM_IOIO_SIZE_MASK
) >> SVM_IOIO_SIZE_SHIFT
;
2008 svm
->next_rip
= svm
->vmcb
->control
.exit_info_2
;
2009 skip_emulated_instruction(&svm
->vcpu
);
2011 return kvm_fast_pio_out(vcpu
, size
, port
);
2014 static int nmi_interception(struct vcpu_svm
*svm
)
2019 static int intr_interception(struct vcpu_svm
*svm
)
2021 ++svm
->vcpu
.stat
.irq_exits
;
2025 static int nop_on_interception(struct vcpu_svm
*svm
)
2030 static int halt_interception(struct vcpu_svm
*svm
)
2032 svm
->next_rip
= kvm_rip_read(&svm
->vcpu
) + 1;
2033 return kvm_emulate_halt(&svm
->vcpu
);
2036 static int vmmcall_interception(struct vcpu_svm
*svm
)
2038 svm
->next_rip
= kvm_rip_read(&svm
->vcpu
) + 3;
2039 kvm_emulate_hypercall(&svm
->vcpu
);
2043 static unsigned long nested_svm_get_tdp_cr3(struct kvm_vcpu
*vcpu
)
2045 struct vcpu_svm
*svm
= to_svm(vcpu
);
2047 return svm
->nested
.nested_cr3
;
2050 static u64
nested_svm_get_tdp_pdptr(struct kvm_vcpu
*vcpu
, int index
)
2052 struct vcpu_svm
*svm
= to_svm(vcpu
);
2053 u64 cr3
= svm
->nested
.nested_cr3
;
2057 ret
= kvm_vcpu_read_guest_page(vcpu
, gpa_to_gfn(cr3
), &pdpte
,
2058 offset_in_page(cr3
) + index
* 8, 8);
2064 static void nested_svm_set_tdp_cr3(struct kvm_vcpu
*vcpu
,
2067 struct vcpu_svm
*svm
= to_svm(vcpu
);
2069 svm
->vmcb
->control
.nested_cr3
= root
;
2070 mark_dirty(svm
->vmcb
, VMCB_NPT
);
2071 svm_flush_tlb(vcpu
);
2074 static void nested_svm_inject_npf_exit(struct kvm_vcpu
*vcpu
,
2075 struct x86_exception
*fault
)
2077 struct vcpu_svm
*svm
= to_svm(vcpu
);
2079 if (svm
->vmcb
->control
.exit_code
!= SVM_EXIT_NPF
) {
2081 * TODO: track the cause of the nested page fault, and
2082 * correctly fill in the high bits of exit_info_1.
2084 svm
->vmcb
->control
.exit_code
= SVM_EXIT_NPF
;
2085 svm
->vmcb
->control
.exit_code_hi
= 0;
2086 svm
->vmcb
->control
.exit_info_1
= (1ULL << 32);
2087 svm
->vmcb
->control
.exit_info_2
= fault
->address
;
2090 svm
->vmcb
->control
.exit_info_1
&= ~0xffffffffULL
;
2091 svm
->vmcb
->control
.exit_info_1
|= fault
->error_code
;
2094 * The present bit is always zero for page structure faults on real
2097 if (svm
->vmcb
->control
.exit_info_1
& (2ULL << 32))
2098 svm
->vmcb
->control
.exit_info_1
&= ~1;
2100 nested_svm_vmexit(svm
);
2103 static void nested_svm_init_mmu_context(struct kvm_vcpu
*vcpu
)
2105 WARN_ON(mmu_is_nested(vcpu
));
2106 kvm_init_shadow_mmu(vcpu
);
2107 vcpu
->arch
.mmu
.set_cr3
= nested_svm_set_tdp_cr3
;
2108 vcpu
->arch
.mmu
.get_cr3
= nested_svm_get_tdp_cr3
;
2109 vcpu
->arch
.mmu
.get_pdptr
= nested_svm_get_tdp_pdptr
;
2110 vcpu
->arch
.mmu
.inject_page_fault
= nested_svm_inject_npf_exit
;
2111 vcpu
->arch
.mmu
.shadow_root_level
= get_npt_level();
2112 reset_shadow_zero_bits_mask(vcpu
, &vcpu
->arch
.mmu
);
2113 vcpu
->arch
.walk_mmu
= &vcpu
->arch
.nested_mmu
;
2116 static void nested_svm_uninit_mmu_context(struct kvm_vcpu
*vcpu
)
2118 vcpu
->arch
.walk_mmu
= &vcpu
->arch
.mmu
;
2121 static int nested_svm_check_permissions(struct vcpu_svm
*svm
)
2123 if (!(svm
->vcpu
.arch
.efer
& EFER_SVME
)
2124 || !is_paging(&svm
->vcpu
)) {
2125 kvm_queue_exception(&svm
->vcpu
, UD_VECTOR
);
2129 if (svm
->vmcb
->save
.cpl
) {
2130 kvm_inject_gp(&svm
->vcpu
, 0);
2137 static int nested_svm_check_exception(struct vcpu_svm
*svm
, unsigned nr
,
2138 bool has_error_code
, u32 error_code
)
2142 if (!is_guest_mode(&svm
->vcpu
))
2145 svm
->vmcb
->control
.exit_code
= SVM_EXIT_EXCP_BASE
+ nr
;
2146 svm
->vmcb
->control
.exit_code_hi
= 0;
2147 svm
->vmcb
->control
.exit_info_1
= error_code
;
2148 svm
->vmcb
->control
.exit_info_2
= svm
->vcpu
.arch
.cr2
;
2150 vmexit
= nested_svm_intercept(svm
);
2151 if (vmexit
== NESTED_EXIT_DONE
)
2152 svm
->nested
.exit_required
= true;
2157 /* This function returns true if it is save to enable the irq window */
2158 static inline bool nested_svm_intr(struct vcpu_svm
*svm
)
2160 if (!is_guest_mode(&svm
->vcpu
))
2163 if (!(svm
->vcpu
.arch
.hflags
& HF_VINTR_MASK
))
2166 if (!(svm
->vcpu
.arch
.hflags
& HF_HIF_MASK
))
2170 * if vmexit was already requested (by intercepted exception
2171 * for instance) do not overwrite it with "external interrupt"
2174 if (svm
->nested
.exit_required
)
2177 svm
->vmcb
->control
.exit_code
= SVM_EXIT_INTR
;
2178 svm
->vmcb
->control
.exit_info_1
= 0;
2179 svm
->vmcb
->control
.exit_info_2
= 0;
2181 if (svm
->nested
.intercept
& 1ULL) {
2183 * The #vmexit can't be emulated here directly because this
2184 * code path runs with irqs and preemption disabled. A
2185 * #vmexit emulation might sleep. Only signal request for
2188 svm
->nested
.exit_required
= true;
2189 trace_kvm_nested_intr_vmexit(svm
->vmcb
->save
.rip
);
2196 /* This function returns true if it is save to enable the nmi window */
2197 static inline bool nested_svm_nmi(struct vcpu_svm
*svm
)
2199 if (!is_guest_mode(&svm
->vcpu
))
2202 if (!(svm
->nested
.intercept
& (1ULL << INTERCEPT_NMI
)))
2205 svm
->vmcb
->control
.exit_code
= SVM_EXIT_NMI
;
2206 svm
->nested
.exit_required
= true;
2211 static void *nested_svm_map(struct vcpu_svm
*svm
, u64 gpa
, struct page
**_page
)
2217 page
= kvm_vcpu_gfn_to_page(&svm
->vcpu
, gpa
>> PAGE_SHIFT
);
2218 if (is_error_page(page
))
2226 kvm_inject_gp(&svm
->vcpu
, 0);
2231 static void nested_svm_unmap(struct page
*page
)
2234 kvm_release_page_dirty(page
);
2237 static int nested_svm_intercept_ioio(struct vcpu_svm
*svm
)
2239 unsigned port
, size
, iopm_len
;
2244 if (!(svm
->nested
.intercept
& (1ULL << INTERCEPT_IOIO_PROT
)))
2245 return NESTED_EXIT_HOST
;
2247 port
= svm
->vmcb
->control
.exit_info_1
>> 16;
2248 size
= (svm
->vmcb
->control
.exit_info_1
& SVM_IOIO_SIZE_MASK
) >>
2249 SVM_IOIO_SIZE_SHIFT
;
2250 gpa
= svm
->nested
.vmcb_iopm
+ (port
/ 8);
2251 start_bit
= port
% 8;
2252 iopm_len
= (start_bit
+ size
> 8) ? 2 : 1;
2253 mask
= (0xf >> (4 - size
)) << start_bit
;
2256 if (kvm_vcpu_read_guest(&svm
->vcpu
, gpa
, &val
, iopm_len
))
2257 return NESTED_EXIT_DONE
;
2259 return (val
& mask
) ? NESTED_EXIT_DONE
: NESTED_EXIT_HOST
;
2262 static int nested_svm_exit_handled_msr(struct vcpu_svm
*svm
)
2264 u32 offset
, msr
, value
;
2267 if (!(svm
->nested
.intercept
& (1ULL << INTERCEPT_MSR_PROT
)))
2268 return NESTED_EXIT_HOST
;
2270 msr
= svm
->vcpu
.arch
.regs
[VCPU_REGS_RCX
];
2271 offset
= svm_msrpm_offset(msr
);
2272 write
= svm
->vmcb
->control
.exit_info_1
& 1;
2273 mask
= 1 << ((2 * (msr
& 0xf)) + write
);
2275 if (offset
== MSR_INVALID
)
2276 return NESTED_EXIT_DONE
;
2278 /* Offset is in 32 bit units but need in 8 bit units */
2281 if (kvm_vcpu_read_guest(&svm
->vcpu
, svm
->nested
.vmcb_msrpm
+ offset
, &value
, 4))
2282 return NESTED_EXIT_DONE
;
2284 return (value
& mask
) ? NESTED_EXIT_DONE
: NESTED_EXIT_HOST
;
2287 static int nested_svm_exit_special(struct vcpu_svm
*svm
)
2289 u32 exit_code
= svm
->vmcb
->control
.exit_code
;
2291 switch (exit_code
) {
2294 case SVM_EXIT_EXCP_BASE
+ MC_VECTOR
:
2295 return NESTED_EXIT_HOST
;
2297 /* For now we are always handling NPFs when using them */
2299 return NESTED_EXIT_HOST
;
2301 case SVM_EXIT_EXCP_BASE
+ PF_VECTOR
:
2302 /* When we're shadowing, trap PFs, but not async PF */
2303 if (!npt_enabled
&& svm
->apf_reason
== 0)
2304 return NESTED_EXIT_HOST
;
2306 case SVM_EXIT_EXCP_BASE
+ NM_VECTOR
:
2307 nm_interception(svm
);
2313 return NESTED_EXIT_CONTINUE
;
2317 * If this function returns true, this #vmexit was already handled
2319 static int nested_svm_intercept(struct vcpu_svm
*svm
)
2321 u32 exit_code
= svm
->vmcb
->control
.exit_code
;
2322 int vmexit
= NESTED_EXIT_HOST
;
2324 switch (exit_code
) {
2326 vmexit
= nested_svm_exit_handled_msr(svm
);
2329 vmexit
= nested_svm_intercept_ioio(svm
);
2331 case SVM_EXIT_READ_CR0
... SVM_EXIT_WRITE_CR8
: {
2332 u32 bit
= 1U << (exit_code
- SVM_EXIT_READ_CR0
);
2333 if (svm
->nested
.intercept_cr
& bit
)
2334 vmexit
= NESTED_EXIT_DONE
;
2337 case SVM_EXIT_READ_DR0
... SVM_EXIT_WRITE_DR7
: {
2338 u32 bit
= 1U << (exit_code
- SVM_EXIT_READ_DR0
);
2339 if (svm
->nested
.intercept_dr
& bit
)
2340 vmexit
= NESTED_EXIT_DONE
;
2343 case SVM_EXIT_EXCP_BASE
... SVM_EXIT_EXCP_BASE
+ 0x1f: {
2344 u32 excp_bits
= 1 << (exit_code
- SVM_EXIT_EXCP_BASE
);
2345 if (svm
->nested
.intercept_exceptions
& excp_bits
)
2346 vmexit
= NESTED_EXIT_DONE
;
2347 /* async page fault always cause vmexit */
2348 else if ((exit_code
== SVM_EXIT_EXCP_BASE
+ PF_VECTOR
) &&
2349 svm
->apf_reason
!= 0)
2350 vmexit
= NESTED_EXIT_DONE
;
2353 case SVM_EXIT_ERR
: {
2354 vmexit
= NESTED_EXIT_DONE
;
2358 u64 exit_bits
= 1ULL << (exit_code
- SVM_EXIT_INTR
);
2359 if (svm
->nested
.intercept
& exit_bits
)
2360 vmexit
= NESTED_EXIT_DONE
;
2367 static int nested_svm_exit_handled(struct vcpu_svm
*svm
)
2371 vmexit
= nested_svm_intercept(svm
);
2373 if (vmexit
== NESTED_EXIT_DONE
)
2374 nested_svm_vmexit(svm
);
2379 static inline void copy_vmcb_control_area(struct vmcb
*dst_vmcb
, struct vmcb
*from_vmcb
)
2381 struct vmcb_control_area
*dst
= &dst_vmcb
->control
;
2382 struct vmcb_control_area
*from
= &from_vmcb
->control
;
2384 dst
->intercept_cr
= from
->intercept_cr
;
2385 dst
->intercept_dr
= from
->intercept_dr
;
2386 dst
->intercept_exceptions
= from
->intercept_exceptions
;
2387 dst
->intercept
= from
->intercept
;
2388 dst
->iopm_base_pa
= from
->iopm_base_pa
;
2389 dst
->msrpm_base_pa
= from
->msrpm_base_pa
;
2390 dst
->tsc_offset
= from
->tsc_offset
;
2391 dst
->asid
= from
->asid
;
2392 dst
->tlb_ctl
= from
->tlb_ctl
;
2393 dst
->int_ctl
= from
->int_ctl
;
2394 dst
->int_vector
= from
->int_vector
;
2395 dst
->int_state
= from
->int_state
;
2396 dst
->exit_code
= from
->exit_code
;
2397 dst
->exit_code_hi
= from
->exit_code_hi
;
2398 dst
->exit_info_1
= from
->exit_info_1
;
2399 dst
->exit_info_2
= from
->exit_info_2
;
2400 dst
->exit_int_info
= from
->exit_int_info
;
2401 dst
->exit_int_info_err
= from
->exit_int_info_err
;
2402 dst
->nested_ctl
= from
->nested_ctl
;
2403 dst
->event_inj
= from
->event_inj
;
2404 dst
->event_inj_err
= from
->event_inj_err
;
2405 dst
->nested_cr3
= from
->nested_cr3
;
2406 dst
->lbr_ctl
= from
->lbr_ctl
;
2409 static int nested_svm_vmexit(struct vcpu_svm
*svm
)
2411 struct vmcb
*nested_vmcb
;
2412 struct vmcb
*hsave
= svm
->nested
.hsave
;
2413 struct vmcb
*vmcb
= svm
->vmcb
;
2416 trace_kvm_nested_vmexit_inject(vmcb
->control
.exit_code
,
2417 vmcb
->control
.exit_info_1
,
2418 vmcb
->control
.exit_info_2
,
2419 vmcb
->control
.exit_int_info
,
2420 vmcb
->control
.exit_int_info_err
,
2423 nested_vmcb
= nested_svm_map(svm
, svm
->nested
.vmcb
, &page
);
2427 /* Exit Guest-Mode */
2428 leave_guest_mode(&svm
->vcpu
);
2429 svm
->nested
.vmcb
= 0;
2431 /* Give the current vmcb to the guest */
2434 nested_vmcb
->save
.es
= vmcb
->save
.es
;
2435 nested_vmcb
->save
.cs
= vmcb
->save
.cs
;
2436 nested_vmcb
->save
.ss
= vmcb
->save
.ss
;
2437 nested_vmcb
->save
.ds
= vmcb
->save
.ds
;
2438 nested_vmcb
->save
.gdtr
= vmcb
->save
.gdtr
;
2439 nested_vmcb
->save
.idtr
= vmcb
->save
.idtr
;
2440 nested_vmcb
->save
.efer
= svm
->vcpu
.arch
.efer
;
2441 nested_vmcb
->save
.cr0
= kvm_read_cr0(&svm
->vcpu
);
2442 nested_vmcb
->save
.cr3
= kvm_read_cr3(&svm
->vcpu
);
2443 nested_vmcb
->save
.cr2
= vmcb
->save
.cr2
;
2444 nested_vmcb
->save
.cr4
= svm
->vcpu
.arch
.cr4
;
2445 nested_vmcb
->save
.rflags
= kvm_get_rflags(&svm
->vcpu
);
2446 nested_vmcb
->save
.rip
= vmcb
->save
.rip
;
2447 nested_vmcb
->save
.rsp
= vmcb
->save
.rsp
;
2448 nested_vmcb
->save
.rax
= vmcb
->save
.rax
;
2449 nested_vmcb
->save
.dr7
= vmcb
->save
.dr7
;
2450 nested_vmcb
->save
.dr6
= vmcb
->save
.dr6
;
2451 nested_vmcb
->save
.cpl
= vmcb
->save
.cpl
;
2453 nested_vmcb
->control
.int_ctl
= vmcb
->control
.int_ctl
;
2454 nested_vmcb
->control
.int_vector
= vmcb
->control
.int_vector
;
2455 nested_vmcb
->control
.int_state
= vmcb
->control
.int_state
;
2456 nested_vmcb
->control
.exit_code
= vmcb
->control
.exit_code
;
2457 nested_vmcb
->control
.exit_code_hi
= vmcb
->control
.exit_code_hi
;
2458 nested_vmcb
->control
.exit_info_1
= vmcb
->control
.exit_info_1
;
2459 nested_vmcb
->control
.exit_info_2
= vmcb
->control
.exit_info_2
;
2460 nested_vmcb
->control
.exit_int_info
= vmcb
->control
.exit_int_info
;
2461 nested_vmcb
->control
.exit_int_info_err
= vmcb
->control
.exit_int_info_err
;
2462 nested_vmcb
->control
.next_rip
= vmcb
->control
.next_rip
;
2465 * If we emulate a VMRUN/#VMEXIT in the same host #vmexit cycle we have
2466 * to make sure that we do not lose injected events. So check event_inj
2467 * here and copy it to exit_int_info if it is valid.
2468 * Exit_int_info and event_inj can't be both valid because the case
2469 * below only happens on a VMRUN instruction intercept which has
2470 * no valid exit_int_info set.
2472 if (vmcb
->control
.event_inj
& SVM_EVTINJ_VALID
) {
2473 struct vmcb_control_area
*nc
= &nested_vmcb
->control
;
2475 nc
->exit_int_info
= vmcb
->control
.event_inj
;
2476 nc
->exit_int_info_err
= vmcb
->control
.event_inj_err
;
2479 nested_vmcb
->control
.tlb_ctl
= 0;
2480 nested_vmcb
->control
.event_inj
= 0;
2481 nested_vmcb
->control
.event_inj_err
= 0;
2483 /* We always set V_INTR_MASKING and remember the old value in hflags */
2484 if (!(svm
->vcpu
.arch
.hflags
& HF_VINTR_MASK
))
2485 nested_vmcb
->control
.int_ctl
&= ~V_INTR_MASKING_MASK
;
2487 /* Restore the original control entries */
2488 copy_vmcb_control_area(vmcb
, hsave
);
2490 kvm_clear_exception_queue(&svm
->vcpu
);
2491 kvm_clear_interrupt_queue(&svm
->vcpu
);
2493 svm
->nested
.nested_cr3
= 0;
2495 /* Restore selected save entries */
2496 svm
->vmcb
->save
.es
= hsave
->save
.es
;
2497 svm
->vmcb
->save
.cs
= hsave
->save
.cs
;
2498 svm
->vmcb
->save
.ss
= hsave
->save
.ss
;
2499 svm
->vmcb
->save
.ds
= hsave
->save
.ds
;
2500 svm
->vmcb
->save
.gdtr
= hsave
->save
.gdtr
;
2501 svm
->vmcb
->save
.idtr
= hsave
->save
.idtr
;
2502 kvm_set_rflags(&svm
->vcpu
, hsave
->save
.rflags
);
2503 svm_set_efer(&svm
->vcpu
, hsave
->save
.efer
);
2504 svm_set_cr0(&svm
->vcpu
, hsave
->save
.cr0
| X86_CR0_PE
);
2505 svm_set_cr4(&svm
->vcpu
, hsave
->save
.cr4
);
2507 svm
->vmcb
->save
.cr3
= hsave
->save
.cr3
;
2508 svm
->vcpu
.arch
.cr3
= hsave
->save
.cr3
;
2510 (void)kvm_set_cr3(&svm
->vcpu
, hsave
->save
.cr3
);
2512 kvm_register_write(&svm
->vcpu
, VCPU_REGS_RAX
, hsave
->save
.rax
);
2513 kvm_register_write(&svm
->vcpu
, VCPU_REGS_RSP
, hsave
->save
.rsp
);
2514 kvm_register_write(&svm
->vcpu
, VCPU_REGS_RIP
, hsave
->save
.rip
);
2515 svm
->vmcb
->save
.dr7
= 0;
2516 svm
->vmcb
->save
.cpl
= 0;
2517 svm
->vmcb
->control
.exit_int_info
= 0;
2519 mark_all_dirty(svm
->vmcb
);
2521 nested_svm_unmap(page
);
2523 nested_svm_uninit_mmu_context(&svm
->vcpu
);
2524 kvm_mmu_reset_context(&svm
->vcpu
);
2525 kvm_mmu_load(&svm
->vcpu
);
2530 static bool nested_svm_vmrun_msrpm(struct vcpu_svm
*svm
)
2533 * This function merges the msr permission bitmaps of kvm and the
2534 * nested vmcb. It is optimized in that it only merges the parts where
2535 * the kvm msr permission bitmap may contain zero bits
2539 if (!(svm
->nested
.intercept
& (1ULL << INTERCEPT_MSR_PROT
)))
2542 for (i
= 0; i
< MSRPM_OFFSETS
; i
++) {
2546 if (msrpm_offsets
[i
] == 0xffffffff)
2549 p
= msrpm_offsets
[i
];
2550 offset
= svm
->nested
.vmcb_msrpm
+ (p
* 4);
2552 if (kvm_vcpu_read_guest(&svm
->vcpu
, offset
, &value
, 4))
2555 svm
->nested
.msrpm
[p
] = svm
->msrpm
[p
] | value
;
2558 svm
->vmcb
->control
.msrpm_base_pa
= __pa(svm
->nested
.msrpm
);
2563 static bool nested_vmcb_checks(struct vmcb
*vmcb
)
2565 if ((vmcb
->control
.intercept
& (1ULL << INTERCEPT_VMRUN
)) == 0)
2568 if (vmcb
->control
.asid
== 0)
2571 if (vmcb
->control
.nested_ctl
&& !npt_enabled
)
2577 static bool nested_svm_vmrun(struct vcpu_svm
*svm
)
2579 struct vmcb
*nested_vmcb
;
2580 struct vmcb
*hsave
= svm
->nested
.hsave
;
2581 struct vmcb
*vmcb
= svm
->vmcb
;
2585 vmcb_gpa
= svm
->vmcb
->save
.rax
;
2587 nested_vmcb
= nested_svm_map(svm
, svm
->vmcb
->save
.rax
, &page
);
2591 if (!nested_vmcb_checks(nested_vmcb
)) {
2592 nested_vmcb
->control
.exit_code
= SVM_EXIT_ERR
;
2593 nested_vmcb
->control
.exit_code_hi
= 0;
2594 nested_vmcb
->control
.exit_info_1
= 0;
2595 nested_vmcb
->control
.exit_info_2
= 0;
2597 nested_svm_unmap(page
);
2602 trace_kvm_nested_vmrun(svm
->vmcb
->save
.rip
, vmcb_gpa
,
2603 nested_vmcb
->save
.rip
,
2604 nested_vmcb
->control
.int_ctl
,
2605 nested_vmcb
->control
.event_inj
,
2606 nested_vmcb
->control
.nested_ctl
);
2608 trace_kvm_nested_intercepts(nested_vmcb
->control
.intercept_cr
& 0xffff,
2609 nested_vmcb
->control
.intercept_cr
>> 16,
2610 nested_vmcb
->control
.intercept_exceptions
,
2611 nested_vmcb
->control
.intercept
);
2613 /* Clear internal status */
2614 kvm_clear_exception_queue(&svm
->vcpu
);
2615 kvm_clear_interrupt_queue(&svm
->vcpu
);
2618 * Save the old vmcb, so we don't need to pick what we save, but can
2619 * restore everything when a VMEXIT occurs
2621 hsave
->save
.es
= vmcb
->save
.es
;
2622 hsave
->save
.cs
= vmcb
->save
.cs
;
2623 hsave
->save
.ss
= vmcb
->save
.ss
;
2624 hsave
->save
.ds
= vmcb
->save
.ds
;
2625 hsave
->save
.gdtr
= vmcb
->save
.gdtr
;
2626 hsave
->save
.idtr
= vmcb
->save
.idtr
;
2627 hsave
->save
.efer
= svm
->vcpu
.arch
.efer
;
2628 hsave
->save
.cr0
= kvm_read_cr0(&svm
->vcpu
);
2629 hsave
->save
.cr4
= svm
->vcpu
.arch
.cr4
;
2630 hsave
->save
.rflags
= kvm_get_rflags(&svm
->vcpu
);
2631 hsave
->save
.rip
= kvm_rip_read(&svm
->vcpu
);
2632 hsave
->save
.rsp
= vmcb
->save
.rsp
;
2633 hsave
->save
.rax
= vmcb
->save
.rax
;
2635 hsave
->save
.cr3
= vmcb
->save
.cr3
;
2637 hsave
->save
.cr3
= kvm_read_cr3(&svm
->vcpu
);
2639 copy_vmcb_control_area(hsave
, vmcb
);
2641 if (kvm_get_rflags(&svm
->vcpu
) & X86_EFLAGS_IF
)
2642 svm
->vcpu
.arch
.hflags
|= HF_HIF_MASK
;
2644 svm
->vcpu
.arch
.hflags
&= ~HF_HIF_MASK
;
2646 if (nested_vmcb
->control
.nested_ctl
) {
2647 kvm_mmu_unload(&svm
->vcpu
);
2648 svm
->nested
.nested_cr3
= nested_vmcb
->control
.nested_cr3
;
2649 nested_svm_init_mmu_context(&svm
->vcpu
);
2652 /* Load the nested guest state */
2653 svm
->vmcb
->save
.es
= nested_vmcb
->save
.es
;
2654 svm
->vmcb
->save
.cs
= nested_vmcb
->save
.cs
;
2655 svm
->vmcb
->save
.ss
= nested_vmcb
->save
.ss
;
2656 svm
->vmcb
->save
.ds
= nested_vmcb
->save
.ds
;
2657 svm
->vmcb
->save
.gdtr
= nested_vmcb
->save
.gdtr
;
2658 svm
->vmcb
->save
.idtr
= nested_vmcb
->save
.idtr
;
2659 kvm_set_rflags(&svm
->vcpu
, nested_vmcb
->save
.rflags
);
2660 svm_set_efer(&svm
->vcpu
, nested_vmcb
->save
.efer
);
2661 svm_set_cr0(&svm
->vcpu
, nested_vmcb
->save
.cr0
);
2662 svm_set_cr4(&svm
->vcpu
, nested_vmcb
->save
.cr4
);
2664 svm
->vmcb
->save
.cr3
= nested_vmcb
->save
.cr3
;
2665 svm
->vcpu
.arch
.cr3
= nested_vmcb
->save
.cr3
;
2667 (void)kvm_set_cr3(&svm
->vcpu
, nested_vmcb
->save
.cr3
);
2669 /* Guest paging mode is active - reset mmu */
2670 kvm_mmu_reset_context(&svm
->vcpu
);
2672 svm
->vmcb
->save
.cr2
= svm
->vcpu
.arch
.cr2
= nested_vmcb
->save
.cr2
;
2673 kvm_register_write(&svm
->vcpu
, VCPU_REGS_RAX
, nested_vmcb
->save
.rax
);
2674 kvm_register_write(&svm
->vcpu
, VCPU_REGS_RSP
, nested_vmcb
->save
.rsp
);
2675 kvm_register_write(&svm
->vcpu
, VCPU_REGS_RIP
, nested_vmcb
->save
.rip
);
2677 /* In case we don't even reach vcpu_run, the fields are not updated */
2678 svm
->vmcb
->save
.rax
= nested_vmcb
->save
.rax
;
2679 svm
->vmcb
->save
.rsp
= nested_vmcb
->save
.rsp
;
2680 svm
->vmcb
->save
.rip
= nested_vmcb
->save
.rip
;
2681 svm
->vmcb
->save
.dr7
= nested_vmcb
->save
.dr7
;
2682 svm
->vmcb
->save
.dr6
= nested_vmcb
->save
.dr6
;
2683 svm
->vmcb
->save
.cpl
= nested_vmcb
->save
.cpl
;
2685 svm
->nested
.vmcb_msrpm
= nested_vmcb
->control
.msrpm_base_pa
& ~0x0fffULL
;
2686 svm
->nested
.vmcb_iopm
= nested_vmcb
->control
.iopm_base_pa
& ~0x0fffULL
;
2688 /* cache intercepts */
2689 svm
->nested
.intercept_cr
= nested_vmcb
->control
.intercept_cr
;
2690 svm
->nested
.intercept_dr
= nested_vmcb
->control
.intercept_dr
;
2691 svm
->nested
.intercept_exceptions
= nested_vmcb
->control
.intercept_exceptions
;
2692 svm
->nested
.intercept
= nested_vmcb
->control
.intercept
;
2694 svm_flush_tlb(&svm
->vcpu
);
2695 svm
->vmcb
->control
.int_ctl
= nested_vmcb
->control
.int_ctl
| V_INTR_MASKING_MASK
;
2696 if (nested_vmcb
->control
.int_ctl
& V_INTR_MASKING_MASK
)
2697 svm
->vcpu
.arch
.hflags
|= HF_VINTR_MASK
;
2699 svm
->vcpu
.arch
.hflags
&= ~HF_VINTR_MASK
;
2701 if (svm
->vcpu
.arch
.hflags
& HF_VINTR_MASK
) {
2702 /* We only want the cr8 intercept bits of the guest */
2703 clr_cr_intercept(svm
, INTERCEPT_CR8_READ
);
2704 clr_cr_intercept(svm
, INTERCEPT_CR8_WRITE
);
2707 /* We don't want to see VMMCALLs from a nested guest */
2708 clr_intercept(svm
, INTERCEPT_VMMCALL
);
2710 svm
->vmcb
->control
.lbr_ctl
= nested_vmcb
->control
.lbr_ctl
;
2711 svm
->vmcb
->control
.int_vector
= nested_vmcb
->control
.int_vector
;
2712 svm
->vmcb
->control
.int_state
= nested_vmcb
->control
.int_state
;
2713 svm
->vmcb
->control
.tsc_offset
+= nested_vmcb
->control
.tsc_offset
;
2714 svm
->vmcb
->control
.event_inj
= nested_vmcb
->control
.event_inj
;
2715 svm
->vmcb
->control
.event_inj_err
= nested_vmcb
->control
.event_inj_err
;
2717 nested_svm_unmap(page
);
2719 /* Enter Guest-Mode */
2720 enter_guest_mode(&svm
->vcpu
);
2723 * Merge guest and host intercepts - must be called with vcpu in
2724 * guest-mode to take affect here
2726 recalc_intercepts(svm
);
2728 svm
->nested
.vmcb
= vmcb_gpa
;
2732 mark_all_dirty(svm
->vmcb
);
2737 static void nested_svm_vmloadsave(struct vmcb
*from_vmcb
, struct vmcb
*to_vmcb
)
2739 to_vmcb
->save
.fs
= from_vmcb
->save
.fs
;
2740 to_vmcb
->save
.gs
= from_vmcb
->save
.gs
;
2741 to_vmcb
->save
.tr
= from_vmcb
->save
.tr
;
2742 to_vmcb
->save
.ldtr
= from_vmcb
->save
.ldtr
;
2743 to_vmcb
->save
.kernel_gs_base
= from_vmcb
->save
.kernel_gs_base
;
2744 to_vmcb
->save
.star
= from_vmcb
->save
.star
;
2745 to_vmcb
->save
.lstar
= from_vmcb
->save
.lstar
;
2746 to_vmcb
->save
.cstar
= from_vmcb
->save
.cstar
;
2747 to_vmcb
->save
.sfmask
= from_vmcb
->save
.sfmask
;
2748 to_vmcb
->save
.sysenter_cs
= from_vmcb
->save
.sysenter_cs
;
2749 to_vmcb
->save
.sysenter_esp
= from_vmcb
->save
.sysenter_esp
;
2750 to_vmcb
->save
.sysenter_eip
= from_vmcb
->save
.sysenter_eip
;
2753 static int vmload_interception(struct vcpu_svm
*svm
)
2755 struct vmcb
*nested_vmcb
;
2758 if (nested_svm_check_permissions(svm
))
2761 nested_vmcb
= nested_svm_map(svm
, svm
->vmcb
->save
.rax
, &page
);
2765 svm
->next_rip
= kvm_rip_read(&svm
->vcpu
) + 3;
2766 skip_emulated_instruction(&svm
->vcpu
);
2768 nested_svm_vmloadsave(nested_vmcb
, svm
->vmcb
);
2769 nested_svm_unmap(page
);
2774 static int vmsave_interception(struct vcpu_svm
*svm
)
2776 struct vmcb
*nested_vmcb
;
2779 if (nested_svm_check_permissions(svm
))
2782 nested_vmcb
= nested_svm_map(svm
, svm
->vmcb
->save
.rax
, &page
);
2786 svm
->next_rip
= kvm_rip_read(&svm
->vcpu
) + 3;
2787 skip_emulated_instruction(&svm
->vcpu
);
2789 nested_svm_vmloadsave(svm
->vmcb
, nested_vmcb
);
2790 nested_svm_unmap(page
);
2795 static int vmrun_interception(struct vcpu_svm
*svm
)
2797 if (nested_svm_check_permissions(svm
))
2800 /* Save rip after vmrun instruction */
2801 kvm_rip_write(&svm
->vcpu
, kvm_rip_read(&svm
->vcpu
) + 3);
2803 if (!nested_svm_vmrun(svm
))
2806 if (!nested_svm_vmrun_msrpm(svm
))
2813 svm
->vmcb
->control
.exit_code
= SVM_EXIT_ERR
;
2814 svm
->vmcb
->control
.exit_code_hi
= 0;
2815 svm
->vmcb
->control
.exit_info_1
= 0;
2816 svm
->vmcb
->control
.exit_info_2
= 0;
2818 nested_svm_vmexit(svm
);
2823 static int stgi_interception(struct vcpu_svm
*svm
)
2825 if (nested_svm_check_permissions(svm
))
2828 svm
->next_rip
= kvm_rip_read(&svm
->vcpu
) + 3;
2829 skip_emulated_instruction(&svm
->vcpu
);
2830 kvm_make_request(KVM_REQ_EVENT
, &svm
->vcpu
);
2837 static int clgi_interception(struct vcpu_svm
*svm
)
2839 if (nested_svm_check_permissions(svm
))
2842 svm
->next_rip
= kvm_rip_read(&svm
->vcpu
) + 3;
2843 skip_emulated_instruction(&svm
->vcpu
);
2847 /* After a CLGI no interrupts should come */
2848 svm_clear_vintr(svm
);
2849 svm
->vmcb
->control
.int_ctl
&= ~V_IRQ_MASK
;
2851 mark_dirty(svm
->vmcb
, VMCB_INTR
);
2856 static int invlpga_interception(struct vcpu_svm
*svm
)
2858 struct kvm_vcpu
*vcpu
= &svm
->vcpu
;
2860 trace_kvm_invlpga(svm
->vmcb
->save
.rip
, kvm_register_read(&svm
->vcpu
, VCPU_REGS_RCX
),
2861 kvm_register_read(&svm
->vcpu
, VCPU_REGS_RAX
));
2863 /* Let's treat INVLPGA the same as INVLPG (can be optimized!) */
2864 kvm_mmu_invlpg(vcpu
, kvm_register_read(&svm
->vcpu
, VCPU_REGS_RAX
));
2866 svm
->next_rip
= kvm_rip_read(&svm
->vcpu
) + 3;
2867 skip_emulated_instruction(&svm
->vcpu
);
2871 static int skinit_interception(struct vcpu_svm
*svm
)
2873 trace_kvm_skinit(svm
->vmcb
->save
.rip
, kvm_register_read(&svm
->vcpu
, VCPU_REGS_RAX
));
2875 kvm_queue_exception(&svm
->vcpu
, UD_VECTOR
);
2879 static int wbinvd_interception(struct vcpu_svm
*svm
)
2881 kvm_emulate_wbinvd(&svm
->vcpu
);
2885 static int xsetbv_interception(struct vcpu_svm
*svm
)
2887 u64 new_bv
= kvm_read_edx_eax(&svm
->vcpu
);
2888 u32 index
= kvm_register_read(&svm
->vcpu
, VCPU_REGS_RCX
);
2890 if (kvm_set_xcr(&svm
->vcpu
, index
, new_bv
) == 0) {
2891 svm
->next_rip
= kvm_rip_read(&svm
->vcpu
) + 3;
2892 skip_emulated_instruction(&svm
->vcpu
);
2898 static int task_switch_interception(struct vcpu_svm
*svm
)
2902 int int_type
= svm
->vmcb
->control
.exit_int_info
&
2903 SVM_EXITINTINFO_TYPE_MASK
;
2904 int int_vec
= svm
->vmcb
->control
.exit_int_info
& SVM_EVTINJ_VEC_MASK
;
2906 svm
->vmcb
->control
.exit_int_info
& SVM_EXITINTINFO_TYPE_MASK
;
2908 svm
->vmcb
->control
.exit_int_info
& SVM_EXITINTINFO_VALID
;
2909 bool has_error_code
= false;
2912 tss_selector
= (u16
)svm
->vmcb
->control
.exit_info_1
;
2914 if (svm
->vmcb
->control
.exit_info_2
&
2915 (1ULL << SVM_EXITINFOSHIFT_TS_REASON_IRET
))
2916 reason
= TASK_SWITCH_IRET
;
2917 else if (svm
->vmcb
->control
.exit_info_2
&
2918 (1ULL << SVM_EXITINFOSHIFT_TS_REASON_JMP
))
2919 reason
= TASK_SWITCH_JMP
;
2921 reason
= TASK_SWITCH_GATE
;
2923 reason
= TASK_SWITCH_CALL
;
2925 if (reason
== TASK_SWITCH_GATE
) {
2927 case SVM_EXITINTINFO_TYPE_NMI
:
2928 svm
->vcpu
.arch
.nmi_injected
= false;
2930 case SVM_EXITINTINFO_TYPE_EXEPT
:
2931 if (svm
->vmcb
->control
.exit_info_2
&
2932 (1ULL << SVM_EXITINFOSHIFT_TS_HAS_ERROR_CODE
)) {
2933 has_error_code
= true;
2935 (u32
)svm
->vmcb
->control
.exit_info_2
;
2937 kvm_clear_exception_queue(&svm
->vcpu
);
2939 case SVM_EXITINTINFO_TYPE_INTR
:
2940 kvm_clear_interrupt_queue(&svm
->vcpu
);
2947 if (reason
!= TASK_SWITCH_GATE
||
2948 int_type
== SVM_EXITINTINFO_TYPE_SOFT
||
2949 (int_type
== SVM_EXITINTINFO_TYPE_EXEPT
&&
2950 (int_vec
== OF_VECTOR
|| int_vec
== BP_VECTOR
)))
2951 skip_emulated_instruction(&svm
->vcpu
);
2953 if (int_type
!= SVM_EXITINTINFO_TYPE_SOFT
)
2956 if (kvm_task_switch(&svm
->vcpu
, tss_selector
, int_vec
, reason
,
2957 has_error_code
, error_code
) == EMULATE_FAIL
) {
2958 svm
->vcpu
.run
->exit_reason
= KVM_EXIT_INTERNAL_ERROR
;
2959 svm
->vcpu
.run
->internal
.suberror
= KVM_INTERNAL_ERROR_EMULATION
;
2960 svm
->vcpu
.run
->internal
.ndata
= 0;
2966 static int cpuid_interception(struct vcpu_svm
*svm
)
2968 svm
->next_rip
= kvm_rip_read(&svm
->vcpu
) + 2;
2969 kvm_emulate_cpuid(&svm
->vcpu
);
2973 static int iret_interception(struct vcpu_svm
*svm
)
2975 ++svm
->vcpu
.stat
.nmi_window_exits
;
2976 clr_intercept(svm
, INTERCEPT_IRET
);
2977 svm
->vcpu
.arch
.hflags
|= HF_IRET_MASK
;
2978 svm
->nmi_iret_rip
= kvm_rip_read(&svm
->vcpu
);
2979 kvm_make_request(KVM_REQ_EVENT
, &svm
->vcpu
);
2983 static int invlpg_interception(struct vcpu_svm
*svm
)
2985 if (!static_cpu_has(X86_FEATURE_DECODEASSISTS
))
2986 return emulate_instruction(&svm
->vcpu
, 0) == EMULATE_DONE
;
2988 kvm_mmu_invlpg(&svm
->vcpu
, svm
->vmcb
->control
.exit_info_1
);
2989 skip_emulated_instruction(&svm
->vcpu
);
2993 static int emulate_on_interception(struct vcpu_svm
*svm
)
2995 return emulate_instruction(&svm
->vcpu
, 0) == EMULATE_DONE
;
2998 static int rdpmc_interception(struct vcpu_svm
*svm
)
3002 if (!static_cpu_has(X86_FEATURE_NRIPS
))
3003 return emulate_on_interception(svm
);
3005 err
= kvm_rdpmc(&svm
->vcpu
);
3006 kvm_complete_insn_gp(&svm
->vcpu
, err
);
3011 static bool check_selective_cr0_intercepted(struct vcpu_svm
*svm
,
3014 unsigned long cr0
= svm
->vcpu
.arch
.cr0
;
3018 intercept
= svm
->nested
.intercept
;
3020 if (!is_guest_mode(&svm
->vcpu
) ||
3021 (!(intercept
& (1ULL << INTERCEPT_SELECTIVE_CR0
))))
3024 cr0
&= ~SVM_CR0_SELECTIVE_MASK
;
3025 val
&= ~SVM_CR0_SELECTIVE_MASK
;
3028 svm
->vmcb
->control
.exit_code
= SVM_EXIT_CR0_SEL_WRITE
;
3029 ret
= (nested_svm_exit_handled(svm
) == NESTED_EXIT_DONE
);
3035 #define CR_VALID (1ULL << 63)
3037 static int cr_interception(struct vcpu_svm
*svm
)
3043 if (!static_cpu_has(X86_FEATURE_DECODEASSISTS
))
3044 return emulate_on_interception(svm
);
3046 if (unlikely((svm
->vmcb
->control
.exit_info_1
& CR_VALID
) == 0))
3047 return emulate_on_interception(svm
);
3049 reg
= svm
->vmcb
->control
.exit_info_1
& SVM_EXITINFO_REG_MASK
;
3050 if (svm
->vmcb
->control
.exit_code
== SVM_EXIT_CR0_SEL_WRITE
)
3051 cr
= SVM_EXIT_WRITE_CR0
- SVM_EXIT_READ_CR0
;
3053 cr
= svm
->vmcb
->control
.exit_code
- SVM_EXIT_READ_CR0
;
3056 if (cr
>= 16) { /* mov to cr */
3058 val
= kvm_register_read(&svm
->vcpu
, reg
);
3061 if (!check_selective_cr0_intercepted(svm
, val
))
3062 err
= kvm_set_cr0(&svm
->vcpu
, val
);
3068 err
= kvm_set_cr3(&svm
->vcpu
, val
);
3071 err
= kvm_set_cr4(&svm
->vcpu
, val
);
3074 err
= kvm_set_cr8(&svm
->vcpu
, val
);
3077 WARN(1, "unhandled write to CR%d", cr
);
3078 kvm_queue_exception(&svm
->vcpu
, UD_VECTOR
);
3081 } else { /* mov from cr */
3084 val
= kvm_read_cr0(&svm
->vcpu
);
3087 val
= svm
->vcpu
.arch
.cr2
;
3090 val
= kvm_read_cr3(&svm
->vcpu
);
3093 val
= kvm_read_cr4(&svm
->vcpu
);
3096 val
= kvm_get_cr8(&svm
->vcpu
);
3099 WARN(1, "unhandled read from CR%d", cr
);
3100 kvm_queue_exception(&svm
->vcpu
, UD_VECTOR
);
3103 kvm_register_write(&svm
->vcpu
, reg
, val
);
3105 kvm_complete_insn_gp(&svm
->vcpu
, err
);
3110 static int dr_interception(struct vcpu_svm
*svm
)
3115 if (svm
->vcpu
.guest_debug
== 0) {
3117 * No more DR vmexits; force a reload of the debug registers
3118 * and reenter on this instruction. The next vmexit will
3119 * retrieve the full state of the debug registers.
3121 clr_dr_intercepts(svm
);
3122 svm
->vcpu
.arch
.switch_db_regs
|= KVM_DEBUGREG_WONT_EXIT
;
3126 if (!boot_cpu_has(X86_FEATURE_DECODEASSISTS
))
3127 return emulate_on_interception(svm
);
3129 reg
= svm
->vmcb
->control
.exit_info_1
& SVM_EXITINFO_REG_MASK
;
3130 dr
= svm
->vmcb
->control
.exit_code
- SVM_EXIT_READ_DR0
;
3132 if (dr
>= 16) { /* mov to DRn */
3133 if (!kvm_require_dr(&svm
->vcpu
, dr
- 16))
3135 val
= kvm_register_read(&svm
->vcpu
, reg
);
3136 kvm_set_dr(&svm
->vcpu
, dr
- 16, val
);
3138 if (!kvm_require_dr(&svm
->vcpu
, dr
))
3140 kvm_get_dr(&svm
->vcpu
, dr
, &val
);
3141 kvm_register_write(&svm
->vcpu
, reg
, val
);
3144 skip_emulated_instruction(&svm
->vcpu
);
3149 static int cr8_write_interception(struct vcpu_svm
*svm
)
3151 struct kvm_run
*kvm_run
= svm
->vcpu
.run
;
3154 u8 cr8_prev
= kvm_get_cr8(&svm
->vcpu
);
3155 /* instruction emulation calls kvm_set_cr8() */
3156 r
= cr_interception(svm
);
3157 if (irqchip_in_kernel(svm
->vcpu
.kvm
))
3159 if (cr8_prev
<= kvm_get_cr8(&svm
->vcpu
))
3161 kvm_run
->exit_reason
= KVM_EXIT_SET_TPR
;
3165 static u64
svm_read_l1_tsc(struct kvm_vcpu
*vcpu
, u64 host_tsc
)
3167 struct vmcb
*vmcb
= get_host_vmcb(to_svm(vcpu
));
3168 return vmcb
->control
.tsc_offset
+
3169 svm_scale_tsc(vcpu
, host_tsc
);
3172 static int svm_get_msr(struct kvm_vcpu
*vcpu
, struct msr_data
*msr_info
)
3174 struct vcpu_svm
*svm
= to_svm(vcpu
);
3176 switch (msr_info
->index
) {
3177 case MSR_IA32_TSC
: {
3178 msr_info
->data
= svm
->vmcb
->control
.tsc_offset
+
3179 svm_scale_tsc(vcpu
, rdtsc());
3184 msr_info
->data
= svm
->vmcb
->save
.star
;
3186 #ifdef CONFIG_X86_64
3188 msr_info
->data
= svm
->vmcb
->save
.lstar
;
3191 msr_info
->data
= svm
->vmcb
->save
.cstar
;
3193 case MSR_KERNEL_GS_BASE
:
3194 msr_info
->data
= svm
->vmcb
->save
.kernel_gs_base
;
3196 case MSR_SYSCALL_MASK
:
3197 msr_info
->data
= svm
->vmcb
->save
.sfmask
;
3200 case MSR_IA32_SYSENTER_CS
:
3201 msr_info
->data
= svm
->vmcb
->save
.sysenter_cs
;
3203 case MSR_IA32_SYSENTER_EIP
:
3204 msr_info
->data
= svm
->sysenter_eip
;
3206 case MSR_IA32_SYSENTER_ESP
:
3207 msr_info
->data
= svm
->sysenter_esp
;
3210 * Nobody will change the following 5 values in the VMCB so we can
3211 * safely return them on rdmsr. They will always be 0 until LBRV is
3214 case MSR_IA32_DEBUGCTLMSR
:
3215 msr_info
->data
= svm
->vmcb
->save
.dbgctl
;
3217 case MSR_IA32_LASTBRANCHFROMIP
:
3218 msr_info
->data
= svm
->vmcb
->save
.br_from
;
3220 case MSR_IA32_LASTBRANCHTOIP
:
3221 msr_info
->data
= svm
->vmcb
->save
.br_to
;
3223 case MSR_IA32_LASTINTFROMIP
:
3224 msr_info
->data
= svm
->vmcb
->save
.last_excp_from
;
3226 case MSR_IA32_LASTINTTOIP
:
3227 msr_info
->data
= svm
->vmcb
->save
.last_excp_to
;
3229 case MSR_VM_HSAVE_PA
:
3230 msr_info
->data
= svm
->nested
.hsave_msr
;
3233 msr_info
->data
= svm
->nested
.vm_cr_msr
;
3235 case MSR_IA32_UCODE_REV
:
3236 msr_info
->data
= 0x01000065;
3239 return kvm_get_msr_common(vcpu
, msr_info
);
3244 static int rdmsr_interception(struct vcpu_svm
*svm
)
3246 u32 ecx
= kvm_register_read(&svm
->vcpu
, VCPU_REGS_RCX
);
3247 struct msr_data msr_info
;
3249 msr_info
.index
= ecx
;
3250 msr_info
.host_initiated
= false;
3251 if (svm_get_msr(&svm
->vcpu
, &msr_info
)) {
3252 trace_kvm_msr_read_ex(ecx
);
3253 kvm_inject_gp(&svm
->vcpu
, 0);
3255 trace_kvm_msr_read(ecx
, msr_info
.data
);
3257 kvm_register_write(&svm
->vcpu
, VCPU_REGS_RAX
,
3258 msr_info
.data
& 0xffffffff);
3259 kvm_register_write(&svm
->vcpu
, VCPU_REGS_RDX
,
3260 msr_info
.data
>> 32);
3261 svm
->next_rip
= kvm_rip_read(&svm
->vcpu
) + 2;
3262 skip_emulated_instruction(&svm
->vcpu
);
3267 static int svm_set_vm_cr(struct kvm_vcpu
*vcpu
, u64 data
)
3269 struct vcpu_svm
*svm
= to_svm(vcpu
);
3270 int svm_dis
, chg_mask
;
3272 if (data
& ~SVM_VM_CR_VALID_MASK
)
3275 chg_mask
= SVM_VM_CR_VALID_MASK
;
3277 if (svm
->nested
.vm_cr_msr
& SVM_VM_CR_SVM_DIS_MASK
)
3278 chg_mask
&= ~(SVM_VM_CR_SVM_LOCK_MASK
| SVM_VM_CR_SVM_DIS_MASK
);
3280 svm
->nested
.vm_cr_msr
&= ~chg_mask
;
3281 svm
->nested
.vm_cr_msr
|= (data
& chg_mask
);
3283 svm_dis
= svm
->nested
.vm_cr_msr
& SVM_VM_CR_SVM_DIS_MASK
;
3285 /* check for svm_disable while efer.svme is set */
3286 if (svm_dis
&& (vcpu
->arch
.efer
& EFER_SVME
))
3292 static int svm_set_msr(struct kvm_vcpu
*vcpu
, struct msr_data
*msr
)
3294 struct vcpu_svm
*svm
= to_svm(vcpu
);
3296 u32 ecx
= msr
->index
;
3297 u64 data
= msr
->data
;
3300 kvm_write_tsc(vcpu
, msr
);
3303 svm
->vmcb
->save
.star
= data
;
3305 #ifdef CONFIG_X86_64
3307 svm
->vmcb
->save
.lstar
= data
;
3310 svm
->vmcb
->save
.cstar
= data
;
3312 case MSR_KERNEL_GS_BASE
:
3313 svm
->vmcb
->save
.kernel_gs_base
= data
;
3315 case MSR_SYSCALL_MASK
:
3316 svm
->vmcb
->save
.sfmask
= data
;
3319 case MSR_IA32_SYSENTER_CS
:
3320 svm
->vmcb
->save
.sysenter_cs
= data
;
3322 case MSR_IA32_SYSENTER_EIP
:
3323 svm
->sysenter_eip
= data
;
3324 svm
->vmcb
->save
.sysenter_eip
= data
;
3326 case MSR_IA32_SYSENTER_ESP
:
3327 svm
->sysenter_esp
= data
;
3328 svm
->vmcb
->save
.sysenter_esp
= data
;
3330 case MSR_IA32_DEBUGCTLMSR
:
3331 if (!boot_cpu_has(X86_FEATURE_LBRV
)) {
3332 vcpu_unimpl(vcpu
, "%s: MSR_IA32_DEBUGCTL 0x%llx, nop\n",
3336 if (data
& DEBUGCTL_RESERVED_BITS
)
3339 svm
->vmcb
->save
.dbgctl
= data
;
3340 mark_dirty(svm
->vmcb
, VMCB_LBR
);
3341 if (data
& (1ULL<<0))
3342 svm_enable_lbrv(svm
);
3344 svm_disable_lbrv(svm
);
3346 case MSR_VM_HSAVE_PA
:
3347 svm
->nested
.hsave_msr
= data
;
3350 return svm_set_vm_cr(vcpu
, data
);
3352 vcpu_unimpl(vcpu
, "unimplemented wrmsr: 0x%x data 0x%llx\n", ecx
, data
);
3354 case MSR_IA32_CR_PAT
:
3356 if (!kvm_mtrr_valid(vcpu
, MSR_IA32_CR_PAT
, data
))
3358 vcpu
->arch
.pat
= data
;
3359 svm_set_guest_pat(svm
, &svm
->vmcb
->save
.g_pat
);
3360 mark_dirty(svm
->vmcb
, VMCB_NPT
);
3365 return kvm_set_msr_common(vcpu
, msr
);
3370 static int wrmsr_interception(struct vcpu_svm
*svm
)
3372 struct msr_data msr
;
3373 u32 ecx
= kvm_register_read(&svm
->vcpu
, VCPU_REGS_RCX
);
3374 u64 data
= kvm_read_edx_eax(&svm
->vcpu
);
3378 msr
.host_initiated
= false;
3380 svm
->next_rip
= kvm_rip_read(&svm
->vcpu
) + 2;
3381 if (kvm_set_msr(&svm
->vcpu
, &msr
)) {
3382 trace_kvm_msr_write_ex(ecx
, data
);
3383 kvm_inject_gp(&svm
->vcpu
, 0);
3385 trace_kvm_msr_write(ecx
, data
);
3386 skip_emulated_instruction(&svm
->vcpu
);
3391 static int msr_interception(struct vcpu_svm
*svm
)
3393 if (svm
->vmcb
->control
.exit_info_1
)
3394 return wrmsr_interception(svm
);
3396 return rdmsr_interception(svm
);
3399 static int interrupt_window_interception(struct vcpu_svm
*svm
)
3401 struct kvm_run
*kvm_run
= svm
->vcpu
.run
;
3403 kvm_make_request(KVM_REQ_EVENT
, &svm
->vcpu
);
3404 svm_clear_vintr(svm
);
3405 svm
->vmcb
->control
.int_ctl
&= ~V_IRQ_MASK
;
3406 mark_dirty(svm
->vmcb
, VMCB_INTR
);
3407 ++svm
->vcpu
.stat
.irq_window_exits
;
3409 * If the user space waits to inject interrupts, exit as soon as
3412 if (!irqchip_in_kernel(svm
->vcpu
.kvm
) &&
3413 kvm_run
->request_interrupt_window
&&
3414 !kvm_cpu_has_interrupt(&svm
->vcpu
)) {
3415 kvm_run
->exit_reason
= KVM_EXIT_IRQ_WINDOW_OPEN
;
3422 static int pause_interception(struct vcpu_svm
*svm
)
3424 kvm_vcpu_on_spin(&(svm
->vcpu
));
3428 static int nop_interception(struct vcpu_svm
*svm
)
3430 skip_emulated_instruction(&(svm
->vcpu
));
3434 static int monitor_interception(struct vcpu_svm
*svm
)
3436 printk_once(KERN_WARNING
"kvm: MONITOR instruction emulated as NOP!\n");
3437 return nop_interception(svm
);
3440 static int mwait_interception(struct vcpu_svm
*svm
)
3442 printk_once(KERN_WARNING
"kvm: MWAIT instruction emulated as NOP!\n");
3443 return nop_interception(svm
);
3446 static int (*const svm_exit_handlers
[])(struct vcpu_svm
*svm
) = {
3447 [SVM_EXIT_READ_CR0
] = cr_interception
,
3448 [SVM_EXIT_READ_CR3
] = cr_interception
,
3449 [SVM_EXIT_READ_CR4
] = cr_interception
,
3450 [SVM_EXIT_READ_CR8
] = cr_interception
,
3451 [SVM_EXIT_CR0_SEL_WRITE
] = cr_interception
,
3452 [SVM_EXIT_WRITE_CR0
] = cr_interception
,
3453 [SVM_EXIT_WRITE_CR3
] = cr_interception
,
3454 [SVM_EXIT_WRITE_CR4
] = cr_interception
,
3455 [SVM_EXIT_WRITE_CR8
] = cr8_write_interception
,
3456 [SVM_EXIT_READ_DR0
] = dr_interception
,
3457 [SVM_EXIT_READ_DR1
] = dr_interception
,
3458 [SVM_EXIT_READ_DR2
] = dr_interception
,
3459 [SVM_EXIT_READ_DR3
] = dr_interception
,
3460 [SVM_EXIT_READ_DR4
] = dr_interception
,
3461 [SVM_EXIT_READ_DR5
] = dr_interception
,
3462 [SVM_EXIT_READ_DR6
] = dr_interception
,
3463 [SVM_EXIT_READ_DR7
] = dr_interception
,
3464 [SVM_EXIT_WRITE_DR0
] = dr_interception
,
3465 [SVM_EXIT_WRITE_DR1
] = dr_interception
,
3466 [SVM_EXIT_WRITE_DR2
] = dr_interception
,
3467 [SVM_EXIT_WRITE_DR3
] = dr_interception
,
3468 [SVM_EXIT_WRITE_DR4
] = dr_interception
,
3469 [SVM_EXIT_WRITE_DR5
] = dr_interception
,
3470 [SVM_EXIT_WRITE_DR6
] = dr_interception
,
3471 [SVM_EXIT_WRITE_DR7
] = dr_interception
,
3472 [SVM_EXIT_EXCP_BASE
+ DB_VECTOR
] = db_interception
,
3473 [SVM_EXIT_EXCP_BASE
+ BP_VECTOR
] = bp_interception
,
3474 [SVM_EXIT_EXCP_BASE
+ UD_VECTOR
] = ud_interception
,
3475 [SVM_EXIT_EXCP_BASE
+ PF_VECTOR
] = pf_interception
,
3476 [SVM_EXIT_EXCP_BASE
+ NM_VECTOR
] = nm_interception
,
3477 [SVM_EXIT_EXCP_BASE
+ MC_VECTOR
] = mc_interception
,
3478 [SVM_EXIT_INTR
] = intr_interception
,
3479 [SVM_EXIT_NMI
] = nmi_interception
,
3480 [SVM_EXIT_SMI
] = nop_on_interception
,
3481 [SVM_EXIT_INIT
] = nop_on_interception
,
3482 [SVM_EXIT_VINTR
] = interrupt_window_interception
,
3483 [SVM_EXIT_RDPMC
] = rdpmc_interception
,
3484 [SVM_EXIT_CPUID
] = cpuid_interception
,
3485 [SVM_EXIT_IRET
] = iret_interception
,
3486 [SVM_EXIT_INVD
] = emulate_on_interception
,
3487 [SVM_EXIT_PAUSE
] = pause_interception
,
3488 [SVM_EXIT_HLT
] = halt_interception
,
3489 [SVM_EXIT_INVLPG
] = invlpg_interception
,
3490 [SVM_EXIT_INVLPGA
] = invlpga_interception
,
3491 [SVM_EXIT_IOIO
] = io_interception
,
3492 [SVM_EXIT_MSR
] = msr_interception
,
3493 [SVM_EXIT_TASK_SWITCH
] = task_switch_interception
,
3494 [SVM_EXIT_SHUTDOWN
] = shutdown_interception
,
3495 [SVM_EXIT_VMRUN
] = vmrun_interception
,
3496 [SVM_EXIT_VMMCALL
] = vmmcall_interception
,
3497 [SVM_EXIT_VMLOAD
] = vmload_interception
,
3498 [SVM_EXIT_VMSAVE
] = vmsave_interception
,
3499 [SVM_EXIT_STGI
] = stgi_interception
,
3500 [SVM_EXIT_CLGI
] = clgi_interception
,
3501 [SVM_EXIT_SKINIT
] = skinit_interception
,
3502 [SVM_EXIT_WBINVD
] = wbinvd_interception
,
3503 [SVM_EXIT_MONITOR
] = monitor_interception
,
3504 [SVM_EXIT_MWAIT
] = mwait_interception
,
3505 [SVM_EXIT_XSETBV
] = xsetbv_interception
,
3506 [SVM_EXIT_NPF
] = pf_interception
,
3507 [SVM_EXIT_RSM
] = emulate_on_interception
,
3510 static void dump_vmcb(struct kvm_vcpu
*vcpu
)
3512 struct vcpu_svm
*svm
= to_svm(vcpu
);
3513 struct vmcb_control_area
*control
= &svm
->vmcb
->control
;
3514 struct vmcb_save_area
*save
= &svm
->vmcb
->save
;
3516 pr_err("VMCB Control Area:\n");
3517 pr_err("%-20s%04x\n", "cr_read:", control
->intercept_cr
& 0xffff);
3518 pr_err("%-20s%04x\n", "cr_write:", control
->intercept_cr
>> 16);
3519 pr_err("%-20s%04x\n", "dr_read:", control
->intercept_dr
& 0xffff);
3520 pr_err("%-20s%04x\n", "dr_write:", control
->intercept_dr
>> 16);
3521 pr_err("%-20s%08x\n", "exceptions:", control
->intercept_exceptions
);
3522 pr_err("%-20s%016llx\n", "intercepts:", control
->intercept
);
3523 pr_err("%-20s%d\n", "pause filter count:", control
->pause_filter_count
);
3524 pr_err("%-20s%016llx\n", "iopm_base_pa:", control
->iopm_base_pa
);
3525 pr_err("%-20s%016llx\n", "msrpm_base_pa:", control
->msrpm_base_pa
);
3526 pr_err("%-20s%016llx\n", "tsc_offset:", control
->tsc_offset
);
3527 pr_err("%-20s%d\n", "asid:", control
->asid
);
3528 pr_err("%-20s%d\n", "tlb_ctl:", control
->tlb_ctl
);
3529 pr_err("%-20s%08x\n", "int_ctl:", control
->int_ctl
);
3530 pr_err("%-20s%08x\n", "int_vector:", control
->int_vector
);
3531 pr_err("%-20s%08x\n", "int_state:", control
->int_state
);
3532 pr_err("%-20s%08x\n", "exit_code:", control
->exit_code
);
3533 pr_err("%-20s%016llx\n", "exit_info1:", control
->exit_info_1
);
3534 pr_err("%-20s%016llx\n", "exit_info2:", control
->exit_info_2
);
3535 pr_err("%-20s%08x\n", "exit_int_info:", control
->exit_int_info
);
3536 pr_err("%-20s%08x\n", "exit_int_info_err:", control
->exit_int_info_err
);
3537 pr_err("%-20s%lld\n", "nested_ctl:", control
->nested_ctl
);
3538 pr_err("%-20s%016llx\n", "nested_cr3:", control
->nested_cr3
);
3539 pr_err("%-20s%08x\n", "event_inj:", control
->event_inj
);
3540 pr_err("%-20s%08x\n", "event_inj_err:", control
->event_inj_err
);
3541 pr_err("%-20s%lld\n", "lbr_ctl:", control
->lbr_ctl
);
3542 pr_err("%-20s%016llx\n", "next_rip:", control
->next_rip
);
3543 pr_err("VMCB State Save Area:\n");
3544 pr_err("%-5s s: %04x a: %04x l: %08x b: %016llx\n",
3546 save
->es
.selector
, save
->es
.attrib
,
3547 save
->es
.limit
, save
->es
.base
);
3548 pr_err("%-5s s: %04x a: %04x l: %08x b: %016llx\n",
3550 save
->cs
.selector
, save
->cs
.attrib
,
3551 save
->cs
.limit
, save
->cs
.base
);
3552 pr_err("%-5s s: %04x a: %04x l: %08x b: %016llx\n",
3554 save
->ss
.selector
, save
->ss
.attrib
,
3555 save
->ss
.limit
, save
->ss
.base
);
3556 pr_err("%-5s s: %04x a: %04x l: %08x b: %016llx\n",
3558 save
->ds
.selector
, save
->ds
.attrib
,
3559 save
->ds
.limit
, save
->ds
.base
);
3560 pr_err("%-5s s: %04x a: %04x l: %08x b: %016llx\n",
3562 save
->fs
.selector
, save
->fs
.attrib
,
3563 save
->fs
.limit
, save
->fs
.base
);
3564 pr_err("%-5s s: %04x a: %04x l: %08x b: %016llx\n",
3566 save
->gs
.selector
, save
->gs
.attrib
,
3567 save
->gs
.limit
, save
->gs
.base
);
3568 pr_err("%-5s s: %04x a: %04x l: %08x b: %016llx\n",
3570 save
->gdtr
.selector
, save
->gdtr
.attrib
,
3571 save
->gdtr
.limit
, save
->gdtr
.base
);
3572 pr_err("%-5s s: %04x a: %04x l: %08x b: %016llx\n",
3574 save
->ldtr
.selector
, save
->ldtr
.attrib
,
3575 save
->ldtr
.limit
, save
->ldtr
.base
);
3576 pr_err("%-5s s: %04x a: %04x l: %08x b: %016llx\n",
3578 save
->idtr
.selector
, save
->idtr
.attrib
,
3579 save
->idtr
.limit
, save
->idtr
.base
);
3580 pr_err("%-5s s: %04x a: %04x l: %08x b: %016llx\n",
3582 save
->tr
.selector
, save
->tr
.attrib
,
3583 save
->tr
.limit
, save
->tr
.base
);
3584 pr_err("cpl: %d efer: %016llx\n",
3585 save
->cpl
, save
->efer
);
3586 pr_err("%-15s %016llx %-13s %016llx\n",
3587 "cr0:", save
->cr0
, "cr2:", save
->cr2
);
3588 pr_err("%-15s %016llx %-13s %016llx\n",
3589 "cr3:", save
->cr3
, "cr4:", save
->cr4
);
3590 pr_err("%-15s %016llx %-13s %016llx\n",
3591 "dr6:", save
->dr6
, "dr7:", save
->dr7
);
3592 pr_err("%-15s %016llx %-13s %016llx\n",
3593 "rip:", save
->rip
, "rflags:", save
->rflags
);
3594 pr_err("%-15s %016llx %-13s %016llx\n",
3595 "rsp:", save
->rsp
, "rax:", save
->rax
);
3596 pr_err("%-15s %016llx %-13s %016llx\n",
3597 "star:", save
->star
, "lstar:", save
->lstar
);
3598 pr_err("%-15s %016llx %-13s %016llx\n",
3599 "cstar:", save
->cstar
, "sfmask:", save
->sfmask
);
3600 pr_err("%-15s %016llx %-13s %016llx\n",
3601 "kernel_gs_base:", save
->kernel_gs_base
,
3602 "sysenter_cs:", save
->sysenter_cs
);
3603 pr_err("%-15s %016llx %-13s %016llx\n",
3604 "sysenter_esp:", save
->sysenter_esp
,
3605 "sysenter_eip:", save
->sysenter_eip
);
3606 pr_err("%-15s %016llx %-13s %016llx\n",
3607 "gpat:", save
->g_pat
, "dbgctl:", save
->dbgctl
);
3608 pr_err("%-15s %016llx %-13s %016llx\n",
3609 "br_from:", save
->br_from
, "br_to:", save
->br_to
);
3610 pr_err("%-15s %016llx %-13s %016llx\n",
3611 "excp_from:", save
->last_excp_from
,
3612 "excp_to:", save
->last_excp_to
);
3615 static void svm_get_exit_info(struct kvm_vcpu
*vcpu
, u64
*info1
, u64
*info2
)
3617 struct vmcb_control_area
*control
= &to_svm(vcpu
)->vmcb
->control
;
3619 *info1
= control
->exit_info_1
;
3620 *info2
= control
->exit_info_2
;
3623 static int handle_exit(struct kvm_vcpu
*vcpu
)
3625 struct vcpu_svm
*svm
= to_svm(vcpu
);
3626 struct kvm_run
*kvm_run
= vcpu
->run
;
3627 u32 exit_code
= svm
->vmcb
->control
.exit_code
;
3629 if (!is_cr_intercept(svm
, INTERCEPT_CR0_WRITE
))
3630 vcpu
->arch
.cr0
= svm
->vmcb
->save
.cr0
;
3632 vcpu
->arch
.cr3
= svm
->vmcb
->save
.cr3
;
3634 if (unlikely(svm
->nested
.exit_required
)) {
3635 nested_svm_vmexit(svm
);
3636 svm
->nested
.exit_required
= false;
3641 if (is_guest_mode(vcpu
)) {
3644 trace_kvm_nested_vmexit(svm
->vmcb
->save
.rip
, exit_code
,
3645 svm
->vmcb
->control
.exit_info_1
,
3646 svm
->vmcb
->control
.exit_info_2
,
3647 svm
->vmcb
->control
.exit_int_info
,
3648 svm
->vmcb
->control
.exit_int_info_err
,
3651 vmexit
= nested_svm_exit_special(svm
);
3653 if (vmexit
== NESTED_EXIT_CONTINUE
)
3654 vmexit
= nested_svm_exit_handled(svm
);
3656 if (vmexit
== NESTED_EXIT_DONE
)
3660 svm_complete_interrupts(svm
);
3662 if (svm
->vmcb
->control
.exit_code
== SVM_EXIT_ERR
) {
3663 kvm_run
->exit_reason
= KVM_EXIT_FAIL_ENTRY
;
3664 kvm_run
->fail_entry
.hardware_entry_failure_reason
3665 = svm
->vmcb
->control
.exit_code
;
3666 pr_err("KVM: FAILED VMRUN WITH VMCB:\n");
3671 if (is_external_interrupt(svm
->vmcb
->control
.exit_int_info
) &&
3672 exit_code
!= SVM_EXIT_EXCP_BASE
+ PF_VECTOR
&&
3673 exit_code
!= SVM_EXIT_NPF
&& exit_code
!= SVM_EXIT_TASK_SWITCH
&&
3674 exit_code
!= SVM_EXIT_INTR
&& exit_code
!= SVM_EXIT_NMI
)
3675 printk(KERN_ERR
"%s: unexpected exit_int_info 0x%x "
3677 __func__
, svm
->vmcb
->control
.exit_int_info
,
3680 if (exit_code
>= ARRAY_SIZE(svm_exit_handlers
)
3681 || !svm_exit_handlers
[exit_code
]) {
3682 WARN_ONCE(1, "svm: unexpected exit reason 0x%x\n", exit_code
);
3683 kvm_queue_exception(vcpu
, UD_VECTOR
);
3687 return svm_exit_handlers
[exit_code
](svm
);
3690 static void reload_tss(struct kvm_vcpu
*vcpu
)
3692 int cpu
= raw_smp_processor_id();
3694 struct svm_cpu_data
*sd
= per_cpu(svm_data
, cpu
);
3695 sd
->tss_desc
->type
= 9; /* available 32/64-bit TSS */
3699 static void pre_svm_run(struct vcpu_svm
*svm
)
3701 int cpu
= raw_smp_processor_id();
3703 struct svm_cpu_data
*sd
= per_cpu(svm_data
, cpu
);
3705 /* FIXME: handle wraparound of asid_generation */
3706 if (svm
->asid_generation
!= sd
->asid_generation
)
3710 static void svm_inject_nmi(struct kvm_vcpu
*vcpu
)
3712 struct vcpu_svm
*svm
= to_svm(vcpu
);
3714 svm
->vmcb
->control
.event_inj
= SVM_EVTINJ_VALID
| SVM_EVTINJ_TYPE_NMI
;
3715 vcpu
->arch
.hflags
|= HF_NMI_MASK
;
3716 set_intercept(svm
, INTERCEPT_IRET
);
3717 ++vcpu
->stat
.nmi_injections
;
3720 static inline void svm_inject_irq(struct vcpu_svm
*svm
, int irq
)
3722 struct vmcb_control_area
*control
;
3724 control
= &svm
->vmcb
->control
;
3725 control
->int_vector
= irq
;
3726 control
->int_ctl
&= ~V_INTR_PRIO_MASK
;
3727 control
->int_ctl
|= V_IRQ_MASK
|
3728 ((/*control->int_vector >> 4*/ 0xf) << V_INTR_PRIO_SHIFT
);
3729 mark_dirty(svm
->vmcb
, VMCB_INTR
);
3732 static void svm_set_irq(struct kvm_vcpu
*vcpu
)
3734 struct vcpu_svm
*svm
= to_svm(vcpu
);
3736 BUG_ON(!(gif_set(svm
)));
3738 trace_kvm_inj_virq(vcpu
->arch
.interrupt
.nr
);
3739 ++vcpu
->stat
.irq_injections
;
3741 svm
->vmcb
->control
.event_inj
= vcpu
->arch
.interrupt
.nr
|
3742 SVM_EVTINJ_VALID
| SVM_EVTINJ_TYPE_INTR
;
3745 static void update_cr8_intercept(struct kvm_vcpu
*vcpu
, int tpr
, int irr
)
3747 struct vcpu_svm
*svm
= to_svm(vcpu
);
3749 if (is_guest_mode(vcpu
) && (vcpu
->arch
.hflags
& HF_VINTR_MASK
))
3752 clr_cr_intercept(svm
, INTERCEPT_CR8_WRITE
);
3758 set_cr_intercept(svm
, INTERCEPT_CR8_WRITE
);
3761 static void svm_set_virtual_x2apic_mode(struct kvm_vcpu
*vcpu
, bool set
)
3766 static int svm_vm_has_apicv(struct kvm
*kvm
)
3771 static void svm_load_eoi_exitmap(struct kvm_vcpu
*vcpu
, u64
*eoi_exit_bitmap
)
3776 static void svm_sync_pir_to_irr(struct kvm_vcpu
*vcpu
)
3781 static int svm_nmi_allowed(struct kvm_vcpu
*vcpu
)
3783 struct vcpu_svm
*svm
= to_svm(vcpu
);
3784 struct vmcb
*vmcb
= svm
->vmcb
;
3786 ret
= !(vmcb
->control
.int_state
& SVM_INTERRUPT_SHADOW_MASK
) &&
3787 !(svm
->vcpu
.arch
.hflags
& HF_NMI_MASK
);
3788 ret
= ret
&& gif_set(svm
) && nested_svm_nmi(svm
);
3793 static bool svm_get_nmi_mask(struct kvm_vcpu
*vcpu
)
3795 struct vcpu_svm
*svm
= to_svm(vcpu
);
3797 return !!(svm
->vcpu
.arch
.hflags
& HF_NMI_MASK
);
3800 static void svm_set_nmi_mask(struct kvm_vcpu
*vcpu
, bool masked
)
3802 struct vcpu_svm
*svm
= to_svm(vcpu
);
3805 svm
->vcpu
.arch
.hflags
|= HF_NMI_MASK
;
3806 set_intercept(svm
, INTERCEPT_IRET
);
3808 svm
->vcpu
.arch
.hflags
&= ~HF_NMI_MASK
;
3809 clr_intercept(svm
, INTERCEPT_IRET
);
3813 static int svm_interrupt_allowed(struct kvm_vcpu
*vcpu
)
3815 struct vcpu_svm
*svm
= to_svm(vcpu
);
3816 struct vmcb
*vmcb
= svm
->vmcb
;
3819 if (!gif_set(svm
) ||
3820 (vmcb
->control
.int_state
& SVM_INTERRUPT_SHADOW_MASK
))
3823 ret
= !!(kvm_get_rflags(vcpu
) & X86_EFLAGS_IF
);
3825 if (is_guest_mode(vcpu
))
3826 return ret
&& !(svm
->vcpu
.arch
.hflags
& HF_VINTR_MASK
);
3831 static void enable_irq_window(struct kvm_vcpu
*vcpu
)
3833 struct vcpu_svm
*svm
= to_svm(vcpu
);
3836 * In case GIF=0 we can't rely on the CPU to tell us when GIF becomes
3837 * 1, because that's a separate STGI/VMRUN intercept. The next time we
3838 * get that intercept, this function will be called again though and
3839 * we'll get the vintr intercept.
3841 if (gif_set(svm
) && nested_svm_intr(svm
)) {
3843 svm_inject_irq(svm
, 0x0);
3847 static void enable_nmi_window(struct kvm_vcpu
*vcpu
)
3849 struct vcpu_svm
*svm
= to_svm(vcpu
);
3851 if ((svm
->vcpu
.arch
.hflags
& (HF_NMI_MASK
| HF_IRET_MASK
))
3853 return; /* IRET will cause a vm exit */
3856 * Something prevents NMI from been injected. Single step over possible
3857 * problem (IRET or exception injection or interrupt shadow)
3859 svm
->nmi_singlestep
= true;
3860 svm
->vmcb
->save
.rflags
|= (X86_EFLAGS_TF
| X86_EFLAGS_RF
);
3861 update_db_bp_intercept(vcpu
);
3864 static int svm_set_tss_addr(struct kvm
*kvm
, unsigned int addr
)
3869 static void svm_flush_tlb(struct kvm_vcpu
*vcpu
)
3871 struct vcpu_svm
*svm
= to_svm(vcpu
);
3873 if (static_cpu_has(X86_FEATURE_FLUSHBYASID
))
3874 svm
->vmcb
->control
.tlb_ctl
= TLB_CONTROL_FLUSH_ASID
;
3876 svm
->asid_generation
--;
3879 static void svm_prepare_guest_switch(struct kvm_vcpu
*vcpu
)
3883 static inline void sync_cr8_to_lapic(struct kvm_vcpu
*vcpu
)
3885 struct vcpu_svm
*svm
= to_svm(vcpu
);
3887 if (is_guest_mode(vcpu
) && (vcpu
->arch
.hflags
& HF_VINTR_MASK
))
3890 if (!is_cr_intercept(svm
, INTERCEPT_CR8_WRITE
)) {
3891 int cr8
= svm
->vmcb
->control
.int_ctl
& V_TPR_MASK
;
3892 kvm_set_cr8(vcpu
, cr8
);
3896 static inline void sync_lapic_to_cr8(struct kvm_vcpu
*vcpu
)
3898 struct vcpu_svm
*svm
= to_svm(vcpu
);
3901 if (is_guest_mode(vcpu
) && (vcpu
->arch
.hflags
& HF_VINTR_MASK
))
3904 cr8
= kvm_get_cr8(vcpu
);
3905 svm
->vmcb
->control
.int_ctl
&= ~V_TPR_MASK
;
3906 svm
->vmcb
->control
.int_ctl
|= cr8
& V_TPR_MASK
;
3909 static void svm_complete_interrupts(struct vcpu_svm
*svm
)
3913 u32 exitintinfo
= svm
->vmcb
->control
.exit_int_info
;
3914 unsigned int3_injected
= svm
->int3_injected
;
3916 svm
->int3_injected
= 0;
3919 * If we've made progress since setting HF_IRET_MASK, we've
3920 * executed an IRET and can allow NMI injection.
3922 if ((svm
->vcpu
.arch
.hflags
& HF_IRET_MASK
)
3923 && kvm_rip_read(&svm
->vcpu
) != svm
->nmi_iret_rip
) {
3924 svm
->vcpu
.arch
.hflags
&= ~(HF_NMI_MASK
| HF_IRET_MASK
);
3925 kvm_make_request(KVM_REQ_EVENT
, &svm
->vcpu
);
3928 svm
->vcpu
.arch
.nmi_injected
= false;
3929 kvm_clear_exception_queue(&svm
->vcpu
);
3930 kvm_clear_interrupt_queue(&svm
->vcpu
);
3932 if (!(exitintinfo
& SVM_EXITINTINFO_VALID
))
3935 kvm_make_request(KVM_REQ_EVENT
, &svm
->vcpu
);
3937 vector
= exitintinfo
& SVM_EXITINTINFO_VEC_MASK
;
3938 type
= exitintinfo
& SVM_EXITINTINFO_TYPE_MASK
;
3941 case SVM_EXITINTINFO_TYPE_NMI
:
3942 svm
->vcpu
.arch
.nmi_injected
= true;
3944 case SVM_EXITINTINFO_TYPE_EXEPT
:
3946 * In case of software exceptions, do not reinject the vector,
3947 * but re-execute the instruction instead. Rewind RIP first
3948 * if we emulated INT3 before.
3950 if (kvm_exception_is_soft(vector
)) {
3951 if (vector
== BP_VECTOR
&& int3_injected
&&
3952 kvm_is_linear_rip(&svm
->vcpu
, svm
->int3_rip
))
3953 kvm_rip_write(&svm
->vcpu
,
3954 kvm_rip_read(&svm
->vcpu
) -
3958 if (exitintinfo
& SVM_EXITINTINFO_VALID_ERR
) {
3959 u32 err
= svm
->vmcb
->control
.exit_int_info_err
;
3960 kvm_requeue_exception_e(&svm
->vcpu
, vector
, err
);
3963 kvm_requeue_exception(&svm
->vcpu
, vector
);
3965 case SVM_EXITINTINFO_TYPE_INTR
:
3966 kvm_queue_interrupt(&svm
->vcpu
, vector
, false);
3973 static void svm_cancel_injection(struct kvm_vcpu
*vcpu
)
3975 struct vcpu_svm
*svm
= to_svm(vcpu
);
3976 struct vmcb_control_area
*control
= &svm
->vmcb
->control
;
3978 control
->exit_int_info
= control
->event_inj
;
3979 control
->exit_int_info_err
= control
->event_inj_err
;
3980 control
->event_inj
= 0;
3981 svm_complete_interrupts(svm
);
3984 static void svm_vcpu_run(struct kvm_vcpu
*vcpu
)
3986 struct vcpu_svm
*svm
= to_svm(vcpu
);
3988 svm
->vmcb
->save
.rax
= vcpu
->arch
.regs
[VCPU_REGS_RAX
];
3989 svm
->vmcb
->save
.rsp
= vcpu
->arch
.regs
[VCPU_REGS_RSP
];
3990 svm
->vmcb
->save
.rip
= vcpu
->arch
.regs
[VCPU_REGS_RIP
];
3993 * A vmexit emulation is required before the vcpu can be executed
3996 if (unlikely(svm
->nested
.exit_required
))
4001 sync_lapic_to_cr8(vcpu
);
4003 svm
->vmcb
->save
.cr2
= vcpu
->arch
.cr2
;
4010 "push %%" _ASM_BP
"; \n\t"
4011 "mov %c[rbx](%[svm]), %%" _ASM_BX
" \n\t"
4012 "mov %c[rcx](%[svm]), %%" _ASM_CX
" \n\t"
4013 "mov %c[rdx](%[svm]), %%" _ASM_DX
" \n\t"
4014 "mov %c[rsi](%[svm]), %%" _ASM_SI
" \n\t"
4015 "mov %c[rdi](%[svm]), %%" _ASM_DI
" \n\t"
4016 "mov %c[rbp](%[svm]), %%" _ASM_BP
" \n\t"
4017 #ifdef CONFIG_X86_64
4018 "mov %c[r8](%[svm]), %%r8 \n\t"
4019 "mov %c[r9](%[svm]), %%r9 \n\t"
4020 "mov %c[r10](%[svm]), %%r10 \n\t"
4021 "mov %c[r11](%[svm]), %%r11 \n\t"
4022 "mov %c[r12](%[svm]), %%r12 \n\t"
4023 "mov %c[r13](%[svm]), %%r13 \n\t"
4024 "mov %c[r14](%[svm]), %%r14 \n\t"
4025 "mov %c[r15](%[svm]), %%r15 \n\t"
4028 /* Enter guest mode */
4029 "push %%" _ASM_AX
" \n\t"
4030 "mov %c[vmcb](%[svm]), %%" _ASM_AX
" \n\t"
4031 __ex(SVM_VMLOAD
) "\n\t"
4032 __ex(SVM_VMRUN
) "\n\t"
4033 __ex(SVM_VMSAVE
) "\n\t"
4034 "pop %%" _ASM_AX
" \n\t"
4036 /* Save guest registers, load host registers */
4037 "mov %%" _ASM_BX
", %c[rbx](%[svm]) \n\t"
4038 "mov %%" _ASM_CX
", %c[rcx](%[svm]) \n\t"
4039 "mov %%" _ASM_DX
", %c[rdx](%[svm]) \n\t"
4040 "mov %%" _ASM_SI
", %c[rsi](%[svm]) \n\t"
4041 "mov %%" _ASM_DI
", %c[rdi](%[svm]) \n\t"
4042 "mov %%" _ASM_BP
", %c[rbp](%[svm]) \n\t"
4043 #ifdef CONFIG_X86_64
4044 "mov %%r8, %c[r8](%[svm]) \n\t"
4045 "mov %%r9, %c[r9](%[svm]) \n\t"
4046 "mov %%r10, %c[r10](%[svm]) \n\t"
4047 "mov %%r11, %c[r11](%[svm]) \n\t"
4048 "mov %%r12, %c[r12](%[svm]) \n\t"
4049 "mov %%r13, %c[r13](%[svm]) \n\t"
4050 "mov %%r14, %c[r14](%[svm]) \n\t"
4051 "mov %%r15, %c[r15](%[svm]) \n\t"
4056 [vmcb
]"i"(offsetof(struct vcpu_svm
, vmcb_pa
)),
4057 [rbx
]"i"(offsetof(struct vcpu_svm
, vcpu
.arch
.regs
[VCPU_REGS_RBX
])),
4058 [rcx
]"i"(offsetof(struct vcpu_svm
, vcpu
.arch
.regs
[VCPU_REGS_RCX
])),
4059 [rdx
]"i"(offsetof(struct vcpu_svm
, vcpu
.arch
.regs
[VCPU_REGS_RDX
])),
4060 [rsi
]"i"(offsetof(struct vcpu_svm
, vcpu
.arch
.regs
[VCPU_REGS_RSI
])),
4061 [rdi
]"i"(offsetof(struct vcpu_svm
, vcpu
.arch
.regs
[VCPU_REGS_RDI
])),
4062 [rbp
]"i"(offsetof(struct vcpu_svm
, vcpu
.arch
.regs
[VCPU_REGS_RBP
]))
4063 #ifdef CONFIG_X86_64
4064 , [r8
]"i"(offsetof(struct vcpu_svm
, vcpu
.arch
.regs
[VCPU_REGS_R8
])),
4065 [r9
]"i"(offsetof(struct vcpu_svm
, vcpu
.arch
.regs
[VCPU_REGS_R9
])),
4066 [r10
]"i"(offsetof(struct vcpu_svm
, vcpu
.arch
.regs
[VCPU_REGS_R10
])),
4067 [r11
]"i"(offsetof(struct vcpu_svm
, vcpu
.arch
.regs
[VCPU_REGS_R11
])),
4068 [r12
]"i"(offsetof(struct vcpu_svm
, vcpu
.arch
.regs
[VCPU_REGS_R12
])),
4069 [r13
]"i"(offsetof(struct vcpu_svm
, vcpu
.arch
.regs
[VCPU_REGS_R13
])),
4070 [r14
]"i"(offsetof(struct vcpu_svm
, vcpu
.arch
.regs
[VCPU_REGS_R14
])),
4071 [r15
]"i"(offsetof(struct vcpu_svm
, vcpu
.arch
.regs
[VCPU_REGS_R15
]))
4074 #ifdef CONFIG_X86_64
4075 , "rbx", "rcx", "rdx", "rsi", "rdi"
4076 , "r8", "r9", "r10", "r11" , "r12", "r13", "r14", "r15"
4078 , "ebx", "ecx", "edx", "esi", "edi"
4082 #ifdef CONFIG_X86_64
4083 wrmsrl(MSR_GS_BASE
, svm
->host
.gs_base
);
4085 loadsegment(fs
, svm
->host
.fs
);
4086 #ifndef CONFIG_X86_32_LAZY_GS
4087 loadsegment(gs
, svm
->host
.gs
);
4093 local_irq_disable();
4095 vcpu
->arch
.cr2
= svm
->vmcb
->save
.cr2
;
4096 vcpu
->arch
.regs
[VCPU_REGS_RAX
] = svm
->vmcb
->save
.rax
;
4097 vcpu
->arch
.regs
[VCPU_REGS_RSP
] = svm
->vmcb
->save
.rsp
;
4098 vcpu
->arch
.regs
[VCPU_REGS_RIP
] = svm
->vmcb
->save
.rip
;
4100 trace_kvm_exit(svm
->vmcb
->control
.exit_code
, vcpu
, KVM_ISA_SVM
);
4102 if (unlikely(svm
->vmcb
->control
.exit_code
== SVM_EXIT_NMI
))
4103 kvm_before_handle_nmi(&svm
->vcpu
);
4107 /* Any pending NMI will happen here */
4109 if (unlikely(svm
->vmcb
->control
.exit_code
== SVM_EXIT_NMI
))
4110 kvm_after_handle_nmi(&svm
->vcpu
);
4112 sync_cr8_to_lapic(vcpu
);
4116 svm
->vmcb
->control
.tlb_ctl
= TLB_CONTROL_DO_NOTHING
;
4118 /* if exit due to PF check for async PF */
4119 if (svm
->vmcb
->control
.exit_code
== SVM_EXIT_EXCP_BASE
+ PF_VECTOR
)
4120 svm
->apf_reason
= kvm_read_and_reset_pf_reason();
4123 vcpu
->arch
.regs_avail
&= ~(1 << VCPU_EXREG_PDPTR
);
4124 vcpu
->arch
.regs_dirty
&= ~(1 << VCPU_EXREG_PDPTR
);
4128 * We need to handle MC intercepts here before the vcpu has a chance to
4129 * change the physical cpu
4131 if (unlikely(svm
->vmcb
->control
.exit_code
==
4132 SVM_EXIT_EXCP_BASE
+ MC_VECTOR
))
4133 svm_handle_mce(svm
);
4135 mark_all_clean(svm
->vmcb
);
4138 static void svm_set_cr3(struct kvm_vcpu
*vcpu
, unsigned long root
)
4140 struct vcpu_svm
*svm
= to_svm(vcpu
);
4142 svm
->vmcb
->save
.cr3
= root
;
4143 mark_dirty(svm
->vmcb
, VMCB_CR
);
4144 svm_flush_tlb(vcpu
);
4147 static void set_tdp_cr3(struct kvm_vcpu
*vcpu
, unsigned long root
)
4149 struct vcpu_svm
*svm
= to_svm(vcpu
);
4151 svm
->vmcb
->control
.nested_cr3
= root
;
4152 mark_dirty(svm
->vmcb
, VMCB_NPT
);
4154 /* Also sync guest cr3 here in case we live migrate */
4155 svm
->vmcb
->save
.cr3
= kvm_read_cr3(vcpu
);
4156 mark_dirty(svm
->vmcb
, VMCB_CR
);
4158 svm_flush_tlb(vcpu
);
4161 static int is_disabled(void)
4165 rdmsrl(MSR_VM_CR
, vm_cr
);
4166 if (vm_cr
& (1 << SVM_VM_CR_SVM_DISABLE
))
4173 svm_patch_hypercall(struct kvm_vcpu
*vcpu
, unsigned char *hypercall
)
4176 * Patch in the VMMCALL instruction:
4178 hypercall
[0] = 0x0f;
4179 hypercall
[1] = 0x01;
4180 hypercall
[2] = 0xd9;
4183 static void svm_check_processor_compat(void *rtn
)
4188 static bool svm_cpu_has_accelerated_tpr(void)
4193 static bool svm_has_high_real_mode_segbase(void)
4198 static void svm_cpuid_update(struct kvm_vcpu
*vcpu
)
4202 static void svm_set_supported_cpuid(u32 func
, struct kvm_cpuid_entry2
*entry
)
4207 entry
->ecx
|= (1 << 2); /* Set SVM bit */
4210 entry
->eax
= 1; /* SVM revision 1 */
4211 entry
->ebx
= 8; /* Lets support 8 ASIDs in case we add proper
4212 ASID emulation to nested SVM */
4213 entry
->ecx
= 0; /* Reserved */
4214 entry
->edx
= 0; /* Per default do not support any
4215 additional features */
4217 /* Support next_rip if host supports it */
4218 if (boot_cpu_has(X86_FEATURE_NRIPS
))
4219 entry
->edx
|= SVM_FEATURE_NRIP
;
4221 /* Support NPT for the guest if enabled */
4223 entry
->edx
|= SVM_FEATURE_NPT
;
4229 static int svm_get_lpage_level(void)
4231 return PT_PDPE_LEVEL
;
4234 static bool svm_rdtscp_supported(void)
4239 static bool svm_invpcid_supported(void)
4244 static bool svm_mpx_supported(void)
4249 static bool svm_xsaves_supported(void)
4254 static bool svm_has_wbinvd_exit(void)
4259 static void svm_fpu_deactivate(struct kvm_vcpu
*vcpu
)
4261 struct vcpu_svm
*svm
= to_svm(vcpu
);
4263 set_exception_intercept(svm
, NM_VECTOR
);
4264 update_cr0_intercept(svm
);
4267 #define PRE_EX(exit) { .exit_code = (exit), \
4268 .stage = X86_ICPT_PRE_EXCEPT, }
4269 #define POST_EX(exit) { .exit_code = (exit), \
4270 .stage = X86_ICPT_POST_EXCEPT, }
4271 #define POST_MEM(exit) { .exit_code = (exit), \
4272 .stage = X86_ICPT_POST_MEMACCESS, }
4274 static const struct __x86_intercept
{
4276 enum x86_intercept_stage stage
;
4277 } x86_intercept_map
[] = {
4278 [x86_intercept_cr_read
] = POST_EX(SVM_EXIT_READ_CR0
),
4279 [x86_intercept_cr_write
] = POST_EX(SVM_EXIT_WRITE_CR0
),
4280 [x86_intercept_clts
] = POST_EX(SVM_EXIT_WRITE_CR0
),
4281 [x86_intercept_lmsw
] = POST_EX(SVM_EXIT_WRITE_CR0
),
4282 [x86_intercept_smsw
] = POST_EX(SVM_EXIT_READ_CR0
),
4283 [x86_intercept_dr_read
] = POST_EX(SVM_EXIT_READ_DR0
),
4284 [x86_intercept_dr_write
] = POST_EX(SVM_EXIT_WRITE_DR0
),
4285 [x86_intercept_sldt
] = POST_EX(SVM_EXIT_LDTR_READ
),
4286 [x86_intercept_str
] = POST_EX(SVM_EXIT_TR_READ
),
4287 [x86_intercept_lldt
] = POST_EX(SVM_EXIT_LDTR_WRITE
),
4288 [x86_intercept_ltr
] = POST_EX(SVM_EXIT_TR_WRITE
),
4289 [x86_intercept_sgdt
] = POST_EX(SVM_EXIT_GDTR_READ
),
4290 [x86_intercept_sidt
] = POST_EX(SVM_EXIT_IDTR_READ
),
4291 [x86_intercept_lgdt
] = POST_EX(SVM_EXIT_GDTR_WRITE
),
4292 [x86_intercept_lidt
] = POST_EX(SVM_EXIT_IDTR_WRITE
),
4293 [x86_intercept_vmrun
] = POST_EX(SVM_EXIT_VMRUN
),
4294 [x86_intercept_vmmcall
] = POST_EX(SVM_EXIT_VMMCALL
),
4295 [x86_intercept_vmload
] = POST_EX(SVM_EXIT_VMLOAD
),
4296 [x86_intercept_vmsave
] = POST_EX(SVM_EXIT_VMSAVE
),
4297 [x86_intercept_stgi
] = POST_EX(SVM_EXIT_STGI
),
4298 [x86_intercept_clgi
] = POST_EX(SVM_EXIT_CLGI
),
4299 [x86_intercept_skinit
] = POST_EX(SVM_EXIT_SKINIT
),
4300 [x86_intercept_invlpga
] = POST_EX(SVM_EXIT_INVLPGA
),
4301 [x86_intercept_rdtscp
] = POST_EX(SVM_EXIT_RDTSCP
),
4302 [x86_intercept_monitor
] = POST_MEM(SVM_EXIT_MONITOR
),
4303 [x86_intercept_mwait
] = POST_EX(SVM_EXIT_MWAIT
),
4304 [x86_intercept_invlpg
] = POST_EX(SVM_EXIT_INVLPG
),
4305 [x86_intercept_invd
] = POST_EX(SVM_EXIT_INVD
),
4306 [x86_intercept_wbinvd
] = POST_EX(SVM_EXIT_WBINVD
),
4307 [x86_intercept_wrmsr
] = POST_EX(SVM_EXIT_MSR
),
4308 [x86_intercept_rdtsc
] = POST_EX(SVM_EXIT_RDTSC
),
4309 [x86_intercept_rdmsr
] = POST_EX(SVM_EXIT_MSR
),
4310 [x86_intercept_rdpmc
] = POST_EX(SVM_EXIT_RDPMC
),
4311 [x86_intercept_cpuid
] = PRE_EX(SVM_EXIT_CPUID
),
4312 [x86_intercept_rsm
] = PRE_EX(SVM_EXIT_RSM
),
4313 [x86_intercept_pause
] = PRE_EX(SVM_EXIT_PAUSE
),
4314 [x86_intercept_pushf
] = PRE_EX(SVM_EXIT_PUSHF
),
4315 [x86_intercept_popf
] = PRE_EX(SVM_EXIT_POPF
),
4316 [x86_intercept_intn
] = PRE_EX(SVM_EXIT_SWINT
),
4317 [x86_intercept_iret
] = PRE_EX(SVM_EXIT_IRET
),
4318 [x86_intercept_icebp
] = PRE_EX(SVM_EXIT_ICEBP
),
4319 [x86_intercept_hlt
] = POST_EX(SVM_EXIT_HLT
),
4320 [x86_intercept_in
] = POST_EX(SVM_EXIT_IOIO
),
4321 [x86_intercept_ins
] = POST_EX(SVM_EXIT_IOIO
),
4322 [x86_intercept_out
] = POST_EX(SVM_EXIT_IOIO
),
4323 [x86_intercept_outs
] = POST_EX(SVM_EXIT_IOIO
),
4330 static int svm_check_intercept(struct kvm_vcpu
*vcpu
,
4331 struct x86_instruction_info
*info
,
4332 enum x86_intercept_stage stage
)
4334 struct vcpu_svm
*svm
= to_svm(vcpu
);
4335 int vmexit
, ret
= X86EMUL_CONTINUE
;
4336 struct __x86_intercept icpt_info
;
4337 struct vmcb
*vmcb
= svm
->vmcb
;
4339 if (info
->intercept
>= ARRAY_SIZE(x86_intercept_map
))
4342 icpt_info
= x86_intercept_map
[info
->intercept
];
4344 if (stage
!= icpt_info
.stage
)
4347 switch (icpt_info
.exit_code
) {
4348 case SVM_EXIT_READ_CR0
:
4349 if (info
->intercept
== x86_intercept_cr_read
)
4350 icpt_info
.exit_code
+= info
->modrm_reg
;
4352 case SVM_EXIT_WRITE_CR0
: {
4353 unsigned long cr0
, val
;
4356 if (info
->intercept
== x86_intercept_cr_write
)
4357 icpt_info
.exit_code
+= info
->modrm_reg
;
4359 if (icpt_info
.exit_code
!= SVM_EXIT_WRITE_CR0
||
4360 info
->intercept
== x86_intercept_clts
)
4363 intercept
= svm
->nested
.intercept
;
4365 if (!(intercept
& (1ULL << INTERCEPT_SELECTIVE_CR0
)))
4368 cr0
= vcpu
->arch
.cr0
& ~SVM_CR0_SELECTIVE_MASK
;
4369 val
= info
->src_val
& ~SVM_CR0_SELECTIVE_MASK
;
4371 if (info
->intercept
== x86_intercept_lmsw
) {
4374 /* lmsw can't clear PE - catch this here */
4375 if (cr0
& X86_CR0_PE
)
4380 icpt_info
.exit_code
= SVM_EXIT_CR0_SEL_WRITE
;
4384 case SVM_EXIT_READ_DR0
:
4385 case SVM_EXIT_WRITE_DR0
:
4386 icpt_info
.exit_code
+= info
->modrm_reg
;
4389 if (info
->intercept
== x86_intercept_wrmsr
)
4390 vmcb
->control
.exit_info_1
= 1;
4392 vmcb
->control
.exit_info_1
= 0;
4394 case SVM_EXIT_PAUSE
:
4396 * We get this for NOP only, but pause
4397 * is rep not, check this here
4399 if (info
->rep_prefix
!= REPE_PREFIX
)
4401 case SVM_EXIT_IOIO
: {
4405 if (info
->intercept
== x86_intercept_in
||
4406 info
->intercept
== x86_intercept_ins
) {
4407 exit_info
= ((info
->src_val
& 0xffff) << 16) |
4409 bytes
= info
->dst_bytes
;
4411 exit_info
= (info
->dst_val
& 0xffff) << 16;
4412 bytes
= info
->src_bytes
;
4415 if (info
->intercept
== x86_intercept_outs
||
4416 info
->intercept
== x86_intercept_ins
)
4417 exit_info
|= SVM_IOIO_STR_MASK
;
4419 if (info
->rep_prefix
)
4420 exit_info
|= SVM_IOIO_REP_MASK
;
4422 bytes
= min(bytes
, 4u);
4424 exit_info
|= bytes
<< SVM_IOIO_SIZE_SHIFT
;
4426 exit_info
|= (u32
)info
->ad_bytes
<< (SVM_IOIO_ASIZE_SHIFT
- 1);
4428 vmcb
->control
.exit_info_1
= exit_info
;
4429 vmcb
->control
.exit_info_2
= info
->next_rip
;
4437 /* TODO: Advertise NRIPS to guest hypervisor unconditionally */
4438 if (static_cpu_has(X86_FEATURE_NRIPS
))
4439 vmcb
->control
.next_rip
= info
->next_rip
;
4440 vmcb
->control
.exit_code
= icpt_info
.exit_code
;
4441 vmexit
= nested_svm_exit_handled(svm
);
4443 ret
= (vmexit
== NESTED_EXIT_DONE
) ? X86EMUL_INTERCEPTED
4450 static void svm_handle_external_intr(struct kvm_vcpu
*vcpu
)
4455 static void svm_sched_in(struct kvm_vcpu
*vcpu
, int cpu
)
4459 static struct kvm_x86_ops svm_x86_ops
= {
4460 .cpu_has_kvm_support
= has_svm
,
4461 .disabled_by_bios
= is_disabled
,
4462 .hardware_setup
= svm_hardware_setup
,
4463 .hardware_unsetup
= svm_hardware_unsetup
,
4464 .check_processor_compatibility
= svm_check_processor_compat
,
4465 .hardware_enable
= svm_hardware_enable
,
4466 .hardware_disable
= svm_hardware_disable
,
4467 .cpu_has_accelerated_tpr
= svm_cpu_has_accelerated_tpr
,
4468 .cpu_has_high_real_mode_segbase
= svm_has_high_real_mode_segbase
,
4470 .vcpu_create
= svm_create_vcpu
,
4471 .vcpu_free
= svm_free_vcpu
,
4472 .vcpu_reset
= svm_vcpu_reset
,
4474 .prepare_guest_switch
= svm_prepare_guest_switch
,
4475 .vcpu_load
= svm_vcpu_load
,
4476 .vcpu_put
= svm_vcpu_put
,
4478 .update_db_bp_intercept
= update_db_bp_intercept
,
4479 .get_msr
= svm_get_msr
,
4480 .set_msr
= svm_set_msr
,
4481 .get_segment_base
= svm_get_segment_base
,
4482 .get_segment
= svm_get_segment
,
4483 .set_segment
= svm_set_segment
,
4484 .get_cpl
= svm_get_cpl
,
4485 .get_cs_db_l_bits
= kvm_get_cs_db_l_bits
,
4486 .decache_cr0_guest_bits
= svm_decache_cr0_guest_bits
,
4487 .decache_cr3
= svm_decache_cr3
,
4488 .decache_cr4_guest_bits
= svm_decache_cr4_guest_bits
,
4489 .set_cr0
= svm_set_cr0
,
4490 .set_cr3
= svm_set_cr3
,
4491 .set_cr4
= svm_set_cr4
,
4492 .set_efer
= svm_set_efer
,
4493 .get_idt
= svm_get_idt
,
4494 .set_idt
= svm_set_idt
,
4495 .get_gdt
= svm_get_gdt
,
4496 .set_gdt
= svm_set_gdt
,
4497 .get_dr6
= svm_get_dr6
,
4498 .set_dr6
= svm_set_dr6
,
4499 .set_dr7
= svm_set_dr7
,
4500 .sync_dirty_debug_regs
= svm_sync_dirty_debug_regs
,
4501 .cache_reg
= svm_cache_reg
,
4502 .get_rflags
= svm_get_rflags
,
4503 .set_rflags
= svm_set_rflags
,
4504 .fpu_activate
= svm_fpu_activate
,
4505 .fpu_deactivate
= svm_fpu_deactivate
,
4507 .tlb_flush
= svm_flush_tlb
,
4509 .run
= svm_vcpu_run
,
4510 .handle_exit
= handle_exit
,
4511 .skip_emulated_instruction
= skip_emulated_instruction
,
4512 .set_interrupt_shadow
= svm_set_interrupt_shadow
,
4513 .get_interrupt_shadow
= svm_get_interrupt_shadow
,
4514 .patch_hypercall
= svm_patch_hypercall
,
4515 .set_irq
= svm_set_irq
,
4516 .set_nmi
= svm_inject_nmi
,
4517 .queue_exception
= svm_queue_exception
,
4518 .cancel_injection
= svm_cancel_injection
,
4519 .interrupt_allowed
= svm_interrupt_allowed
,
4520 .nmi_allowed
= svm_nmi_allowed
,
4521 .get_nmi_mask
= svm_get_nmi_mask
,
4522 .set_nmi_mask
= svm_set_nmi_mask
,
4523 .enable_nmi_window
= enable_nmi_window
,
4524 .enable_irq_window
= enable_irq_window
,
4525 .update_cr8_intercept
= update_cr8_intercept
,
4526 .set_virtual_x2apic_mode
= svm_set_virtual_x2apic_mode
,
4527 .vm_has_apicv
= svm_vm_has_apicv
,
4528 .load_eoi_exitmap
= svm_load_eoi_exitmap
,
4529 .sync_pir_to_irr
= svm_sync_pir_to_irr
,
4531 .set_tss_addr
= svm_set_tss_addr
,
4532 .get_tdp_level
= get_npt_level
,
4533 .get_mt_mask
= svm_get_mt_mask
,
4535 .get_exit_info
= svm_get_exit_info
,
4537 .get_lpage_level
= svm_get_lpage_level
,
4539 .cpuid_update
= svm_cpuid_update
,
4541 .rdtscp_supported
= svm_rdtscp_supported
,
4542 .invpcid_supported
= svm_invpcid_supported
,
4543 .mpx_supported
= svm_mpx_supported
,
4544 .xsaves_supported
= svm_xsaves_supported
,
4546 .set_supported_cpuid
= svm_set_supported_cpuid
,
4548 .has_wbinvd_exit
= svm_has_wbinvd_exit
,
4550 .set_tsc_khz
= svm_set_tsc_khz
,
4551 .read_tsc_offset
= svm_read_tsc_offset
,
4552 .write_tsc_offset
= svm_write_tsc_offset
,
4553 .adjust_tsc_offset
= svm_adjust_tsc_offset
,
4554 .compute_tsc_offset
= svm_compute_tsc_offset
,
4555 .read_l1_tsc
= svm_read_l1_tsc
,
4557 .set_tdp_cr3
= set_tdp_cr3
,
4559 .check_intercept
= svm_check_intercept
,
4560 .handle_external_intr
= svm_handle_external_intr
,
4562 .sched_in
= svm_sched_in
,
4564 .pmu_ops
= &amd_pmu_ops
,
4567 static int __init
svm_init(void)
4569 return kvm_init(&svm_x86_ops
, sizeof(struct vcpu_svm
),
4570 __alignof__(struct vcpu_svm
), THIS_MODULE
);
4573 static void __exit
svm_exit(void)
4578 module_init(svm_init
)
4579 module_exit(svm_exit
)