5 * This work is licensed under the terms of the GNU GPL, version 2. See
6 * the COPYING file in the top-level directory.
9 #include <linux/types.h>
10 #include <linux/hardirq.h>
11 #include <linux/list.h>
12 #include <linux/mutex.h>
13 #include <linux/spinlock.h>
14 #include <linux/signal.h>
15 #include <linux/sched.h>
16 #include <linux/bug.h>
18 #include <linux/mmu_notifier.h>
19 #include <linux/preempt.h>
20 #include <linux/msi.h>
21 #include <linux/slab.h>
22 #include <linux/vmalloc.h>
23 #include <linux/rcupdate.h>
24 #include <linux/ratelimit.h>
25 #include <linux/err.h>
26 #include <linux/irqflags.h>
27 #include <linux/context_tracking.h>
28 #include <linux/irqbypass.h>
29 #include <linux/swait.h>
30 #include <linux/refcount.h>
31 #include <asm/signal.h>
33 #include <linux/kvm.h>
34 #include <linux/kvm_para.h>
36 #include <linux/kvm_types.h>
38 #include <asm/kvm_host.h>
40 #ifndef KVM_MAX_VCPU_ID
41 #define KVM_MAX_VCPU_ID KVM_MAX_VCPUS
45 * The bit 16 ~ bit 31 of kvm_memory_region::flags are internally used
46 * in kvm, other bits are visible for userspace which are defined in
47 * include/linux/kvm_h.
49 #define KVM_MEMSLOT_INVALID (1UL << 16)
52 * Bit 0 of the memslot generation number is an "update in-progress flag",
53 * e.g. is temporarily set for the duration of install_new_memslots().
54 * This flag effectively creates a unique generation number that is used to
55 * mark cached memslot data, e.g. MMIO accesses, as potentially being stale,
56 * i.e. may (or may not) have come from the previous memslots generation.
58 * This is necessary because the actual memslots update is not atomic with
59 * respect to the generation number update. Updating the generation number
60 * first would allow a vCPU to cache a spte from the old memslots using the
61 * new generation number, and updating the generation number after switching
62 * to the new memslots would allow cache hits using the old generation number
63 * to reference the defunct memslots.
65 * This mechanism is used to prevent getting hits in KVM's caches while a
66 * memslot update is in-progress, and to prevent cache hits *after* updating
67 * the actual generation number against accesses that were inserted into the
68 * cache *before* the memslots were updated.
70 #define KVM_MEMSLOT_GEN_UPDATE_IN_PROGRESS BIT_ULL(0)
72 /* Two fragments for cross MMIO pages. */
73 #define KVM_MAX_MMIO_FRAGMENTS 2
75 #ifndef KVM_ADDRESS_SPACE_NUM
76 #define KVM_ADDRESS_SPACE_NUM 1
80 * For the normal pfn, the highest 12 bits should be zero,
81 * so we can mask bit 62 ~ bit 52 to indicate the error pfn,
82 * mask bit 63 to indicate the noslot pfn.
84 #define KVM_PFN_ERR_MASK (0x7ffULL << 52)
85 #define KVM_PFN_ERR_NOSLOT_MASK (0xfffULL << 52)
86 #define KVM_PFN_NOSLOT (0x1ULL << 63)
88 #define KVM_PFN_ERR_FAULT (KVM_PFN_ERR_MASK)
89 #define KVM_PFN_ERR_HWPOISON (KVM_PFN_ERR_MASK + 1)
90 #define KVM_PFN_ERR_RO_FAULT (KVM_PFN_ERR_MASK + 2)
93 * error pfns indicate that the gfn is in slot but faild to
94 * translate it to pfn on host.
96 static inline bool is_error_pfn(kvm_pfn_t pfn
)
98 return !!(pfn
& KVM_PFN_ERR_MASK
);
102 * error_noslot pfns indicate that the gfn can not be
103 * translated to pfn - it is not in slot or failed to
104 * translate it to pfn.
106 static inline bool is_error_noslot_pfn(kvm_pfn_t pfn
)
108 return !!(pfn
& KVM_PFN_ERR_NOSLOT_MASK
);
111 /* noslot pfn indicates that the gfn is not in slot. */
112 static inline bool is_noslot_pfn(kvm_pfn_t pfn
)
114 return pfn
== KVM_PFN_NOSLOT
;
118 * architectures with KVM_HVA_ERR_BAD other than PAGE_OFFSET (e.g. s390)
119 * provide own defines and kvm_is_error_hva
121 #ifndef KVM_HVA_ERR_BAD
123 #define KVM_HVA_ERR_BAD (PAGE_OFFSET)
124 #define KVM_HVA_ERR_RO_BAD (PAGE_OFFSET + PAGE_SIZE)
126 static inline bool kvm_is_error_hva(unsigned long addr
)
128 return addr
>= PAGE_OFFSET
;
133 #define KVM_ERR_PTR_BAD_PAGE (ERR_PTR(-ENOENT))
135 static inline bool is_error_page(struct page
*page
)
140 #define KVM_REQUEST_MASK GENMASK(7,0)
141 #define KVM_REQUEST_NO_WAKEUP BIT(8)
142 #define KVM_REQUEST_WAIT BIT(9)
144 * Architecture-independent vcpu->requests bit members
145 * Bits 4-7 are reserved for more arch-independent bits.
147 #define KVM_REQ_TLB_FLUSH (0 | KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
148 #define KVM_REQ_MMU_RELOAD (1 | KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
149 #define KVM_REQ_PENDING_TIMER 2
150 #define KVM_REQ_UNHALT 3
151 #define KVM_REQUEST_ARCH_BASE 8
153 #define KVM_ARCH_REQ_FLAGS(nr, flags) ({ \
154 BUILD_BUG_ON((unsigned)(nr) >= (FIELD_SIZEOF(struct kvm_vcpu, requests) * 8) - KVM_REQUEST_ARCH_BASE); \
155 (unsigned)(((nr) + KVM_REQUEST_ARCH_BASE) | (flags)); \
157 #define KVM_ARCH_REQ(nr) KVM_ARCH_REQ_FLAGS(nr, 0)
159 #define KVM_USERSPACE_IRQ_SOURCE_ID 0
160 #define KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID 1
162 extern struct kmem_cache
*kvm_vcpu_cache
;
164 extern spinlock_t kvm_lock
;
165 extern struct list_head vm_list
;
167 struct kvm_io_range
{
170 struct kvm_io_device
*dev
;
173 #define NR_IOBUS_DEVS 1000
178 struct kvm_io_range range
[];
184 KVM_VIRTIO_CCW_NOTIFY_BUS
,
189 int kvm_io_bus_write(struct kvm_vcpu
*vcpu
, enum kvm_bus bus_idx
, gpa_t addr
,
190 int len
, const void *val
);
191 int kvm_io_bus_write_cookie(struct kvm_vcpu
*vcpu
, enum kvm_bus bus_idx
,
192 gpa_t addr
, int len
, const void *val
, long cookie
);
193 int kvm_io_bus_read(struct kvm_vcpu
*vcpu
, enum kvm_bus bus_idx
, gpa_t addr
,
195 int kvm_io_bus_register_dev(struct kvm
*kvm
, enum kvm_bus bus_idx
, gpa_t addr
,
196 int len
, struct kvm_io_device
*dev
);
197 void kvm_io_bus_unregister_dev(struct kvm
*kvm
, enum kvm_bus bus_idx
,
198 struct kvm_io_device
*dev
);
199 struct kvm_io_device
*kvm_io_bus_get_dev(struct kvm
*kvm
, enum kvm_bus bus_idx
,
202 #ifdef CONFIG_KVM_ASYNC_PF
203 struct kvm_async_pf
{
204 struct work_struct work
;
205 struct list_head link
;
206 struct list_head queue
;
207 struct kvm_vcpu
*vcpu
;
208 struct mm_struct
*mm
;
211 struct kvm_arch_async_pf arch
;
215 void kvm_clear_async_pf_completion_queue(struct kvm_vcpu
*vcpu
);
216 void kvm_check_async_pf_completion(struct kvm_vcpu
*vcpu
);
217 int kvm_setup_async_pf(struct kvm_vcpu
*vcpu
, gva_t gva
, unsigned long hva
,
218 struct kvm_arch_async_pf
*arch
);
219 int kvm_async_pf_wakeup_all(struct kvm_vcpu
*vcpu
);
226 READING_SHADOW_PAGE_TABLES
,
230 * Sometimes a large or cross-page mmio needs to be broken up into separate
231 * exits for userspace servicing.
233 struct kvm_mmio_fragment
{
241 #ifdef CONFIG_PREEMPT_NOTIFIERS
242 struct preempt_notifier preempt_notifier
;
249 unsigned long guest_debug
;
252 struct list_head blocked_vcpu_list
;
257 int guest_xcr0_loaded
;
258 struct swait_queue_head wq
;
259 struct pid __rcu
*pid
;
262 struct kvm_vcpu_stat stat
;
263 unsigned int halt_poll_ns
;
266 #ifdef CONFIG_HAS_IOMEM
268 int mmio_read_completed
;
270 int mmio_cur_fragment
;
271 int mmio_nr_fragments
;
272 struct kvm_mmio_fragment mmio_fragments
[KVM_MAX_MMIO_FRAGMENTS
];
275 #ifdef CONFIG_KVM_ASYNC_PF
278 struct list_head queue
;
279 struct list_head done
;
284 #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT
286 * Cpu relax intercept or pause loop exit optimization
287 * in_spin_loop: set when a vcpu does a pause loop exit
288 * or cpu relax intercepted.
289 * dy_eligible: indicates whether vcpu is eligible for directed yield.
297 struct kvm_vcpu_arch arch
;
298 struct dentry
*debugfs_dentry
;
301 static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu
*vcpu
)
304 * The memory barrier ensures a previous write to vcpu->requests cannot
305 * be reordered with the read of vcpu->mode. It pairs with the general
306 * memory barrier following the write of vcpu->mode in VCPU RUN.
308 smp_mb__before_atomic();
309 return cmpxchg(&vcpu
->mode
, IN_GUEST_MODE
, EXITING_GUEST_MODE
);
313 * Some of the bitops functions do not support too long bitmaps.
314 * This number must be determined not to exceed such limits.
316 #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1)
318 struct kvm_memory_slot
{
320 unsigned long npages
;
321 unsigned long *dirty_bitmap
;
322 struct kvm_arch_memory_slot arch
;
323 unsigned long userspace_addr
;
328 static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot
*memslot
)
330 return ALIGN(memslot
->npages
, BITS_PER_LONG
) / 8;
333 static inline unsigned long *kvm_second_dirty_bitmap(struct kvm_memory_slot
*memslot
)
335 unsigned long len
= kvm_dirty_bitmap_bytes(memslot
);
337 return memslot
->dirty_bitmap
+ len
/ sizeof(*memslot
->dirty_bitmap
);
340 struct kvm_s390_adapter_int
{
353 struct kvm_kernel_irq_routing_entry
{
356 int (*set
)(struct kvm_kernel_irq_routing_entry
*e
,
357 struct kvm
*kvm
, int irq_source_id
, int level
,
371 struct kvm_s390_adapter_int adapter
;
372 struct kvm_hv_sint hv_sint
;
374 struct hlist_node link
;
377 #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING
378 struct kvm_irq_routing_table
{
379 int chip
[KVM_NR_IRQCHIPS
][KVM_IRQCHIP_NUM_PINS
];
382 * Array indexed by gsi. Each entry contains list of irq chips
383 * the gsi is connected to.
385 struct hlist_head map
[0];
389 #ifndef KVM_PRIVATE_MEM_SLOTS
390 #define KVM_PRIVATE_MEM_SLOTS 0
393 #ifndef KVM_MEM_SLOTS_NUM
394 #define KVM_MEM_SLOTS_NUM (KVM_USER_MEM_SLOTS + KVM_PRIVATE_MEM_SLOTS)
397 #ifndef __KVM_VCPU_MULTIPLE_ADDRESS_SPACE
398 static inline int kvm_arch_vcpu_memslots_id(struct kvm_vcpu
*vcpu
)
406 * memslots are not sorted by id anymore, please use id_to_memslot()
407 * to get the memslot by its id.
409 struct kvm_memslots
{
411 struct kvm_memory_slot memslots
[KVM_MEM_SLOTS_NUM
];
412 /* The mapping table from slot id to the index in memslots[]. */
413 short id_to_index
[KVM_MEM_SLOTS_NUM
];
420 struct mutex slots_lock
;
421 struct mm_struct
*mm
; /* userspace tied to this vm */
422 struct kvm_memslots __rcu
*memslots
[KVM_ADDRESS_SPACE_NUM
];
423 struct kvm_vcpu
*vcpus
[KVM_MAX_VCPUS
];
426 * created_vcpus is protected by kvm->lock, and is incremented
427 * at the beginning of KVM_CREATE_VCPU. online_vcpus is only
428 * incremented after storing the kvm_vcpu pointer in vcpus,
429 * and is accessed atomically.
431 atomic_t online_vcpus
;
433 int last_boosted_vcpu
;
434 struct list_head vm_list
;
436 struct kvm_io_bus __rcu
*buses
[KVM_NR_BUSES
];
437 #ifdef CONFIG_HAVE_KVM_EVENTFD
440 struct list_head items
;
441 struct list_head resampler_list
;
442 struct mutex resampler_lock
;
444 struct list_head ioeventfds
;
446 struct kvm_vm_stat stat
;
447 struct kvm_arch arch
;
448 refcount_t users_count
;
449 #ifdef CONFIG_KVM_MMIO
450 struct kvm_coalesced_mmio_ring
*coalesced_mmio_ring
;
451 spinlock_t ring_lock
;
452 struct list_head coalesced_zones
;
455 struct mutex irq_lock
;
456 #ifdef CONFIG_HAVE_KVM_IRQCHIP
458 * Update side is protected by irq_lock.
460 struct kvm_irq_routing_table __rcu
*irq_routing
;
462 #ifdef CONFIG_HAVE_KVM_IRQFD
463 struct hlist_head irq_ack_notifier_list
;
466 #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER)
467 struct mmu_notifier mmu_notifier
;
468 unsigned long mmu_notifier_seq
;
469 long mmu_notifier_count
;
472 struct list_head devices
;
473 bool manual_dirty_log_protect
;
474 struct dentry
*debugfs_dentry
;
475 struct kvm_stat_data
**debugfs_stat_data
;
476 struct srcu_struct srcu
;
477 struct srcu_struct irq_srcu
;
481 #define kvm_err(fmt, ...) \
482 pr_err("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__)
483 #define kvm_info(fmt, ...) \
484 pr_info("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__)
485 #define kvm_debug(fmt, ...) \
486 pr_debug("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__)
487 #define kvm_debug_ratelimited(fmt, ...) \
488 pr_debug_ratelimited("kvm [%i]: " fmt, task_pid_nr(current), \
490 #define kvm_pr_unimpl(fmt, ...) \
491 pr_err_ratelimited("kvm [%i]: " fmt, \
492 task_tgid_nr(current), ## __VA_ARGS__)
494 /* The guest did something we don't support. */
495 #define vcpu_unimpl(vcpu, fmt, ...) \
496 kvm_pr_unimpl("vcpu%i, guest rIP: 0x%lx " fmt, \
497 (vcpu)->vcpu_id, kvm_rip_read(vcpu), ## __VA_ARGS__)
499 #define vcpu_debug(vcpu, fmt, ...) \
500 kvm_debug("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__)
501 #define vcpu_debug_ratelimited(vcpu, fmt, ...) \
502 kvm_debug_ratelimited("vcpu%i " fmt, (vcpu)->vcpu_id, \
504 #define vcpu_err(vcpu, fmt, ...) \
505 kvm_err("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__)
507 static inline struct kvm_io_bus
*kvm_get_bus(struct kvm
*kvm
, enum kvm_bus idx
)
509 return srcu_dereference_check(kvm
->buses
[idx
], &kvm
->srcu
,
510 lockdep_is_held(&kvm
->slots_lock
) ||
511 !refcount_read(&kvm
->users_count
));
514 static inline struct kvm_vcpu
*kvm_get_vcpu(struct kvm
*kvm
, int i
)
516 /* Pairs with smp_wmb() in kvm_vm_ioctl_create_vcpu, in case
517 * the caller has read kvm->online_vcpus before (as is the case
518 * for kvm_for_each_vcpu, for example).
521 return kvm
->vcpus
[i
];
524 #define kvm_for_each_vcpu(idx, vcpup, kvm) \
526 idx < atomic_read(&kvm->online_vcpus) && \
527 (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \
530 static inline struct kvm_vcpu
*kvm_get_vcpu_by_id(struct kvm
*kvm
, int id
)
532 struct kvm_vcpu
*vcpu
= NULL
;
537 if (id
< KVM_MAX_VCPUS
)
538 vcpu
= kvm_get_vcpu(kvm
, id
);
539 if (vcpu
&& vcpu
->vcpu_id
== id
)
541 kvm_for_each_vcpu(i
, vcpu
, kvm
)
542 if (vcpu
->vcpu_id
== id
)
547 static inline int kvm_vcpu_get_idx(struct kvm_vcpu
*vcpu
)
549 struct kvm_vcpu
*tmp
;
552 kvm_for_each_vcpu(idx
, tmp
, vcpu
->kvm
)
558 #define kvm_for_each_memslot(memslot, slots) \
559 for (memslot = &slots->memslots[0]; \
560 memslot < slots->memslots + KVM_MEM_SLOTS_NUM && memslot->npages;\
563 int kvm_vcpu_init(struct kvm_vcpu
*vcpu
, struct kvm
*kvm
, unsigned id
);
564 void kvm_vcpu_uninit(struct kvm_vcpu
*vcpu
);
566 void vcpu_load(struct kvm_vcpu
*vcpu
);
567 void vcpu_put(struct kvm_vcpu
*vcpu
);
569 #ifdef __KVM_HAVE_IOAPIC
570 void kvm_arch_post_irq_ack_notifier_list_update(struct kvm
*kvm
);
571 void kvm_arch_post_irq_routing_update(struct kvm
*kvm
);
573 static inline void kvm_arch_post_irq_ack_notifier_list_update(struct kvm
*kvm
)
576 static inline void kvm_arch_post_irq_routing_update(struct kvm
*kvm
)
581 #ifdef CONFIG_HAVE_KVM_IRQFD
582 int kvm_irqfd_init(void);
583 void kvm_irqfd_exit(void);
585 static inline int kvm_irqfd_init(void)
590 static inline void kvm_irqfd_exit(void)
594 int kvm_init(void *opaque
, unsigned vcpu_size
, unsigned vcpu_align
,
595 struct module
*module
);
598 void kvm_get_kvm(struct kvm
*kvm
);
599 void kvm_put_kvm(struct kvm
*kvm
);
601 static inline struct kvm_memslots
*__kvm_memslots(struct kvm
*kvm
, int as_id
)
603 return srcu_dereference_check(kvm
->memslots
[as_id
], &kvm
->srcu
,
604 lockdep_is_held(&kvm
->slots_lock
) ||
605 !refcount_read(&kvm
->users_count
));
608 static inline struct kvm_memslots
*kvm_memslots(struct kvm
*kvm
)
610 return __kvm_memslots(kvm
, 0);
613 static inline struct kvm_memslots
*kvm_vcpu_memslots(struct kvm_vcpu
*vcpu
)
615 int as_id
= kvm_arch_vcpu_memslots_id(vcpu
);
617 return __kvm_memslots(vcpu
->kvm
, as_id
);
620 static inline struct kvm_memory_slot
*
621 id_to_memslot(struct kvm_memslots
*slots
, int id
)
623 int index
= slots
->id_to_index
[id
];
624 struct kvm_memory_slot
*slot
;
626 slot
= &slots
->memslots
[index
];
628 WARN_ON(slot
->id
!= id
);
633 * KVM_SET_USER_MEMORY_REGION ioctl allows the following operations:
634 * - create a new memory slot
635 * - delete an existing memory slot
636 * - modify an existing memory slot
637 * -- move it in the guest physical memory space
638 * -- just change its flags
640 * Since flags can be changed by some of these operations, the following
641 * differentiation is the best we can do for __kvm_set_memory_region():
650 int kvm_set_memory_region(struct kvm
*kvm
,
651 const struct kvm_userspace_memory_region
*mem
);
652 int __kvm_set_memory_region(struct kvm
*kvm
,
653 const struct kvm_userspace_memory_region
*mem
);
654 void kvm_arch_free_memslot(struct kvm
*kvm
, struct kvm_memory_slot
*free
,
655 struct kvm_memory_slot
*dont
);
656 int kvm_arch_create_memslot(struct kvm
*kvm
, struct kvm_memory_slot
*slot
,
657 unsigned long npages
);
658 void kvm_arch_memslots_updated(struct kvm
*kvm
, u64 gen
);
659 int kvm_arch_prepare_memory_region(struct kvm
*kvm
,
660 struct kvm_memory_slot
*memslot
,
661 const struct kvm_userspace_memory_region
*mem
,
662 enum kvm_mr_change change
);
663 void kvm_arch_commit_memory_region(struct kvm
*kvm
,
664 const struct kvm_userspace_memory_region
*mem
,
665 const struct kvm_memory_slot
*old
,
666 const struct kvm_memory_slot
*new,
667 enum kvm_mr_change change
);
668 bool kvm_largepages_enabled(void);
669 void kvm_disable_largepages(void);
670 /* flush all memory translations */
671 void kvm_arch_flush_shadow_all(struct kvm
*kvm
);
672 /* flush memory translations pointing to 'slot' */
673 void kvm_arch_flush_shadow_memslot(struct kvm
*kvm
,
674 struct kvm_memory_slot
*slot
);
676 int gfn_to_page_many_atomic(struct kvm_memory_slot
*slot
, gfn_t gfn
,
677 struct page
**pages
, int nr_pages
);
679 struct page
*gfn_to_page(struct kvm
*kvm
, gfn_t gfn
);
680 unsigned long gfn_to_hva(struct kvm
*kvm
, gfn_t gfn
);
681 unsigned long gfn_to_hva_prot(struct kvm
*kvm
, gfn_t gfn
, bool *writable
);
682 unsigned long gfn_to_hva_memslot(struct kvm_memory_slot
*slot
, gfn_t gfn
);
683 unsigned long gfn_to_hva_memslot_prot(struct kvm_memory_slot
*slot
, gfn_t gfn
,
685 void kvm_release_page_clean(struct page
*page
);
686 void kvm_release_page_dirty(struct page
*page
);
687 void kvm_set_page_accessed(struct page
*page
);
689 kvm_pfn_t
gfn_to_pfn_atomic(struct kvm
*kvm
, gfn_t gfn
);
690 kvm_pfn_t
gfn_to_pfn(struct kvm
*kvm
, gfn_t gfn
);
691 kvm_pfn_t
gfn_to_pfn_prot(struct kvm
*kvm
, gfn_t gfn
, bool write_fault
,
693 kvm_pfn_t
gfn_to_pfn_memslot(struct kvm_memory_slot
*slot
, gfn_t gfn
);
694 kvm_pfn_t
gfn_to_pfn_memslot_atomic(struct kvm_memory_slot
*slot
, gfn_t gfn
);
695 kvm_pfn_t
__gfn_to_pfn_memslot(struct kvm_memory_slot
*slot
, gfn_t gfn
,
696 bool atomic
, bool *async
, bool write_fault
,
699 void kvm_release_pfn_clean(kvm_pfn_t pfn
);
700 void kvm_release_pfn_dirty(kvm_pfn_t pfn
);
701 void kvm_set_pfn_dirty(kvm_pfn_t pfn
);
702 void kvm_set_pfn_accessed(kvm_pfn_t pfn
);
703 void kvm_get_pfn(kvm_pfn_t pfn
);
705 int kvm_read_guest_page(struct kvm
*kvm
, gfn_t gfn
, void *data
, int offset
,
707 int kvm_read_guest_atomic(struct kvm
*kvm
, gpa_t gpa
, void *data
,
709 int kvm_read_guest(struct kvm
*kvm
, gpa_t gpa
, void *data
, unsigned long len
);
710 int kvm_read_guest_cached(struct kvm
*kvm
, struct gfn_to_hva_cache
*ghc
,
711 void *data
, unsigned long len
);
712 int kvm_write_guest_page(struct kvm
*kvm
, gfn_t gfn
, const void *data
,
713 int offset
, int len
);
714 int kvm_write_guest(struct kvm
*kvm
, gpa_t gpa
, const void *data
,
716 int kvm_write_guest_cached(struct kvm
*kvm
, struct gfn_to_hva_cache
*ghc
,
717 void *data
, unsigned long len
);
718 int kvm_write_guest_offset_cached(struct kvm
*kvm
, struct gfn_to_hva_cache
*ghc
,
719 void *data
, unsigned int offset
,
721 int kvm_gfn_to_hva_cache_init(struct kvm
*kvm
, struct gfn_to_hva_cache
*ghc
,
722 gpa_t gpa
, unsigned long len
);
723 int kvm_clear_guest_page(struct kvm
*kvm
, gfn_t gfn
, int offset
, int len
);
724 int kvm_clear_guest(struct kvm
*kvm
, gpa_t gpa
, unsigned long len
);
725 struct kvm_memory_slot
*gfn_to_memslot(struct kvm
*kvm
, gfn_t gfn
);
726 bool kvm_is_visible_gfn(struct kvm
*kvm
, gfn_t gfn
);
727 unsigned long kvm_host_page_size(struct kvm
*kvm
, gfn_t gfn
);
728 void mark_page_dirty(struct kvm
*kvm
, gfn_t gfn
);
730 struct kvm_memslots
*kvm_vcpu_memslots(struct kvm_vcpu
*vcpu
);
731 struct kvm_memory_slot
*kvm_vcpu_gfn_to_memslot(struct kvm_vcpu
*vcpu
, gfn_t gfn
);
732 kvm_pfn_t
kvm_vcpu_gfn_to_pfn_atomic(struct kvm_vcpu
*vcpu
, gfn_t gfn
);
733 kvm_pfn_t
kvm_vcpu_gfn_to_pfn(struct kvm_vcpu
*vcpu
, gfn_t gfn
);
734 struct page
*kvm_vcpu_gfn_to_page(struct kvm_vcpu
*vcpu
, gfn_t gfn
);
735 unsigned long kvm_vcpu_gfn_to_hva(struct kvm_vcpu
*vcpu
, gfn_t gfn
);
736 unsigned long kvm_vcpu_gfn_to_hva_prot(struct kvm_vcpu
*vcpu
, gfn_t gfn
, bool *writable
);
737 int kvm_vcpu_read_guest_page(struct kvm_vcpu
*vcpu
, gfn_t gfn
, void *data
, int offset
,
739 int kvm_vcpu_read_guest_atomic(struct kvm_vcpu
*vcpu
, gpa_t gpa
, void *data
,
741 int kvm_vcpu_read_guest(struct kvm_vcpu
*vcpu
, gpa_t gpa
, void *data
,
743 int kvm_vcpu_write_guest_page(struct kvm_vcpu
*vcpu
, gfn_t gfn
, const void *data
,
744 int offset
, int len
);
745 int kvm_vcpu_write_guest(struct kvm_vcpu
*vcpu
, gpa_t gpa
, const void *data
,
747 void kvm_vcpu_mark_page_dirty(struct kvm_vcpu
*vcpu
, gfn_t gfn
);
749 void kvm_sigset_activate(struct kvm_vcpu
*vcpu
);
750 void kvm_sigset_deactivate(struct kvm_vcpu
*vcpu
);
752 void kvm_vcpu_block(struct kvm_vcpu
*vcpu
);
753 void kvm_arch_vcpu_blocking(struct kvm_vcpu
*vcpu
);
754 void kvm_arch_vcpu_unblocking(struct kvm_vcpu
*vcpu
);
755 bool kvm_vcpu_wake_up(struct kvm_vcpu
*vcpu
);
756 void kvm_vcpu_kick(struct kvm_vcpu
*vcpu
);
757 int kvm_vcpu_yield_to(struct kvm_vcpu
*target
);
758 void kvm_vcpu_on_spin(struct kvm_vcpu
*vcpu
, bool usermode_vcpu_not_eligible
);
760 void kvm_flush_remote_tlbs(struct kvm
*kvm
);
761 void kvm_reload_remote_mmus(struct kvm
*kvm
);
763 bool kvm_make_vcpus_request_mask(struct kvm
*kvm
, unsigned int req
,
764 unsigned long *vcpu_bitmap
, cpumask_var_t tmp
);
765 bool kvm_make_all_cpus_request(struct kvm
*kvm
, unsigned int req
);
767 long kvm_arch_dev_ioctl(struct file
*filp
,
768 unsigned int ioctl
, unsigned long arg
);
769 long kvm_arch_vcpu_ioctl(struct file
*filp
,
770 unsigned int ioctl
, unsigned long arg
);
771 vm_fault_t
kvm_arch_vcpu_fault(struct kvm_vcpu
*vcpu
, struct vm_fault
*vmf
);
773 int kvm_vm_ioctl_check_extension(struct kvm
*kvm
, long ext
);
775 int kvm_get_dirty_log(struct kvm
*kvm
,
776 struct kvm_dirty_log
*log
, int *is_dirty
);
778 int kvm_get_dirty_log_protect(struct kvm
*kvm
,
779 struct kvm_dirty_log
*log
, bool *flush
);
780 int kvm_clear_dirty_log_protect(struct kvm
*kvm
,
781 struct kvm_clear_dirty_log
*log
, bool *flush
);
783 void kvm_arch_mmu_enable_log_dirty_pt_masked(struct kvm
*kvm
,
784 struct kvm_memory_slot
*slot
,
788 int kvm_vm_ioctl_get_dirty_log(struct kvm
*kvm
,
789 struct kvm_dirty_log
*log
);
790 int kvm_vm_ioctl_clear_dirty_log(struct kvm
*kvm
,
791 struct kvm_clear_dirty_log
*log
);
793 int kvm_vm_ioctl_irq_line(struct kvm
*kvm
, struct kvm_irq_level
*irq_level
,
795 int kvm_vm_ioctl_enable_cap(struct kvm
*kvm
,
796 struct kvm_enable_cap
*cap
);
797 long kvm_arch_vm_ioctl(struct file
*filp
,
798 unsigned int ioctl
, unsigned long arg
);
800 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu
*vcpu
, struct kvm_fpu
*fpu
);
801 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu
*vcpu
, struct kvm_fpu
*fpu
);
803 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu
*vcpu
,
804 struct kvm_translation
*tr
);
806 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu
*vcpu
, struct kvm_regs
*regs
);
807 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu
*vcpu
, struct kvm_regs
*regs
);
808 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu
*vcpu
,
809 struct kvm_sregs
*sregs
);
810 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu
*vcpu
,
811 struct kvm_sregs
*sregs
);
812 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu
*vcpu
,
813 struct kvm_mp_state
*mp_state
);
814 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu
*vcpu
,
815 struct kvm_mp_state
*mp_state
);
816 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu
*vcpu
,
817 struct kvm_guest_debug
*dbg
);
818 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
);
820 int kvm_arch_init(void *opaque
);
821 void kvm_arch_exit(void);
823 int kvm_arch_vcpu_init(struct kvm_vcpu
*vcpu
);
824 void kvm_arch_vcpu_uninit(struct kvm_vcpu
*vcpu
);
826 void kvm_arch_sched_in(struct kvm_vcpu
*vcpu
, int cpu
);
828 void kvm_arch_vcpu_free(struct kvm_vcpu
*vcpu
);
829 void kvm_arch_vcpu_load(struct kvm_vcpu
*vcpu
, int cpu
);
830 void kvm_arch_vcpu_put(struct kvm_vcpu
*vcpu
);
831 struct kvm_vcpu
*kvm_arch_vcpu_create(struct kvm
*kvm
, unsigned int id
);
832 int kvm_arch_vcpu_setup(struct kvm_vcpu
*vcpu
);
833 void kvm_arch_vcpu_postcreate(struct kvm_vcpu
*vcpu
);
834 void kvm_arch_vcpu_destroy(struct kvm_vcpu
*vcpu
);
836 bool kvm_arch_has_vcpu_debugfs(void);
837 int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu
*vcpu
);
839 int kvm_arch_hardware_enable(void);
840 void kvm_arch_hardware_disable(void);
841 int kvm_arch_hardware_setup(void);
842 void kvm_arch_hardware_unsetup(void);
843 void kvm_arch_check_processor_compat(void *rtn
);
844 int kvm_arch_vcpu_runnable(struct kvm_vcpu
*vcpu
);
845 bool kvm_arch_vcpu_in_kernel(struct kvm_vcpu
*vcpu
);
846 int kvm_arch_vcpu_should_kick(struct kvm_vcpu
*vcpu
);
848 #ifndef __KVM_HAVE_ARCH_VM_ALLOC
850 * All architectures that want to use vzalloc currently also
851 * need their own kvm_arch_alloc_vm implementation.
853 static inline struct kvm
*kvm_arch_alloc_vm(void)
855 return kzalloc(sizeof(struct kvm
), GFP_KERNEL
);
858 static inline void kvm_arch_free_vm(struct kvm
*kvm
)
864 #ifndef __KVM_HAVE_ARCH_FLUSH_REMOTE_TLB
865 static inline int kvm_arch_flush_remote_tlb(struct kvm
*kvm
)
871 #ifdef __KVM_HAVE_ARCH_NONCOHERENT_DMA
872 void kvm_arch_register_noncoherent_dma(struct kvm
*kvm
);
873 void kvm_arch_unregister_noncoherent_dma(struct kvm
*kvm
);
874 bool kvm_arch_has_noncoherent_dma(struct kvm
*kvm
);
876 static inline void kvm_arch_register_noncoherent_dma(struct kvm
*kvm
)
880 static inline void kvm_arch_unregister_noncoherent_dma(struct kvm
*kvm
)
884 static inline bool kvm_arch_has_noncoherent_dma(struct kvm
*kvm
)
889 #ifdef __KVM_HAVE_ARCH_ASSIGNED_DEVICE
890 void kvm_arch_start_assignment(struct kvm
*kvm
);
891 void kvm_arch_end_assignment(struct kvm
*kvm
);
892 bool kvm_arch_has_assigned_device(struct kvm
*kvm
);
894 static inline void kvm_arch_start_assignment(struct kvm
*kvm
)
898 static inline void kvm_arch_end_assignment(struct kvm
*kvm
)
902 static inline bool kvm_arch_has_assigned_device(struct kvm
*kvm
)
908 static inline struct swait_queue_head
*kvm_arch_vcpu_wq(struct kvm_vcpu
*vcpu
)
910 #ifdef __KVM_HAVE_ARCH_WQP
911 return vcpu
->arch
.wqp
;
917 #ifdef __KVM_HAVE_ARCH_INTC_INITIALIZED
919 * returns true if the virtual interrupt controller is initialized and
920 * ready to accept virtual IRQ. On some architectures the virtual interrupt
921 * controller is dynamically instantiated and this is not always true.
923 bool kvm_arch_intc_initialized(struct kvm
*kvm
);
925 static inline bool kvm_arch_intc_initialized(struct kvm
*kvm
)
931 int kvm_arch_init_vm(struct kvm
*kvm
, unsigned long type
);
932 void kvm_arch_destroy_vm(struct kvm
*kvm
);
933 void kvm_arch_sync_events(struct kvm
*kvm
);
935 int kvm_cpu_has_pending_timer(struct kvm_vcpu
*vcpu
);
936 void kvm_vcpu_kick(struct kvm_vcpu
*vcpu
);
938 bool kvm_is_reserved_pfn(kvm_pfn_t pfn
);
940 struct kvm_irq_ack_notifier
{
941 struct hlist_node link
;
943 void (*irq_acked
)(struct kvm_irq_ack_notifier
*kian
);
946 int kvm_irq_map_gsi(struct kvm
*kvm
,
947 struct kvm_kernel_irq_routing_entry
*entries
, int gsi
);
948 int kvm_irq_map_chip_pin(struct kvm
*kvm
, unsigned irqchip
, unsigned pin
);
950 int kvm_set_irq(struct kvm
*kvm
, int irq_source_id
, u32 irq
, int level
,
952 int kvm_set_msi(struct kvm_kernel_irq_routing_entry
*irq_entry
, struct kvm
*kvm
,
953 int irq_source_id
, int level
, bool line_status
);
954 int kvm_arch_set_irq_inatomic(struct kvm_kernel_irq_routing_entry
*e
,
955 struct kvm
*kvm
, int irq_source_id
,
956 int level
, bool line_status
);
957 bool kvm_irq_has_notifier(struct kvm
*kvm
, unsigned irqchip
, unsigned pin
);
958 void kvm_notify_acked_gsi(struct kvm
*kvm
, int gsi
);
959 void kvm_notify_acked_irq(struct kvm
*kvm
, unsigned irqchip
, unsigned pin
);
960 void kvm_register_irq_ack_notifier(struct kvm
*kvm
,
961 struct kvm_irq_ack_notifier
*kian
);
962 void kvm_unregister_irq_ack_notifier(struct kvm
*kvm
,
963 struct kvm_irq_ack_notifier
*kian
);
964 int kvm_request_irq_source_id(struct kvm
*kvm
);
965 void kvm_free_irq_source_id(struct kvm
*kvm
, int irq_source_id
);
968 * search_memslots() and __gfn_to_memslot() are here because they are
969 * used in non-modular code in arch/powerpc/kvm/book3s_hv_rm_mmu.c.
970 * gfn_to_memslot() itself isn't here as an inline because that would
971 * bloat other code too much.
973 static inline struct kvm_memory_slot
*
974 search_memslots(struct kvm_memslots
*slots
, gfn_t gfn
)
976 int start
= 0, end
= slots
->used_slots
;
977 int slot
= atomic_read(&slots
->lru_slot
);
978 struct kvm_memory_slot
*memslots
= slots
->memslots
;
980 if (gfn
>= memslots
[slot
].base_gfn
&&
981 gfn
< memslots
[slot
].base_gfn
+ memslots
[slot
].npages
)
982 return &memslots
[slot
];
984 while (start
< end
) {
985 slot
= start
+ (end
- start
) / 2;
987 if (gfn
>= memslots
[slot
].base_gfn
)
993 if (gfn
>= memslots
[start
].base_gfn
&&
994 gfn
< memslots
[start
].base_gfn
+ memslots
[start
].npages
) {
995 atomic_set(&slots
->lru_slot
, start
);
996 return &memslots
[start
];
1002 static inline struct kvm_memory_slot
*
1003 __gfn_to_memslot(struct kvm_memslots
*slots
, gfn_t gfn
)
1005 return search_memslots(slots
, gfn
);
1008 static inline unsigned long
1009 __gfn_to_hva_memslot(struct kvm_memory_slot
*slot
, gfn_t gfn
)
1011 return slot
->userspace_addr
+ (gfn
- slot
->base_gfn
) * PAGE_SIZE
;
1014 static inline int memslot_id(struct kvm
*kvm
, gfn_t gfn
)
1016 return gfn_to_memslot(kvm
, gfn
)->id
;
1020 hva_to_gfn_memslot(unsigned long hva
, struct kvm_memory_slot
*slot
)
1022 gfn_t gfn_offset
= (hva
- slot
->userspace_addr
) >> PAGE_SHIFT
;
1024 return slot
->base_gfn
+ gfn_offset
;
1027 static inline gpa_t
gfn_to_gpa(gfn_t gfn
)
1029 return (gpa_t
)gfn
<< PAGE_SHIFT
;
1032 static inline gfn_t
gpa_to_gfn(gpa_t gpa
)
1034 return (gfn_t
)(gpa
>> PAGE_SHIFT
);
1037 static inline hpa_t
pfn_to_hpa(kvm_pfn_t pfn
)
1039 return (hpa_t
)pfn
<< PAGE_SHIFT
;
1042 static inline struct page
*kvm_vcpu_gpa_to_page(struct kvm_vcpu
*vcpu
,
1045 return kvm_vcpu_gfn_to_page(vcpu
, gpa_to_gfn(gpa
));
1048 static inline bool kvm_is_error_gpa(struct kvm
*kvm
, gpa_t gpa
)
1050 unsigned long hva
= gfn_to_hva(kvm
, gpa_to_gfn(gpa
));
1052 return kvm_is_error_hva(hva
);
1055 enum kvm_stat_kind
{
1060 struct kvm_stat_data
{
1065 struct kvm_stats_debugfs_item
{
1068 enum kvm_stat_kind kind
;
1070 extern struct kvm_stats_debugfs_item debugfs_entries
[];
1071 extern struct dentry
*kvm_debugfs_dir
;
1073 #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER)
1074 static inline int mmu_notifier_retry(struct kvm
*kvm
, unsigned long mmu_seq
)
1076 if (unlikely(kvm
->mmu_notifier_count
))
1079 * Ensure the read of mmu_notifier_count happens before the read
1080 * of mmu_notifier_seq. This interacts with the smp_wmb() in
1081 * mmu_notifier_invalidate_range_end to make sure that the caller
1082 * either sees the old (non-zero) value of mmu_notifier_count or
1083 * the new (incremented) value of mmu_notifier_seq.
1084 * PowerPC Book3s HV KVM calls this under a per-page lock
1085 * rather than under kvm->mmu_lock, for scalability, so
1086 * can't rely on kvm->mmu_lock to keep things ordered.
1089 if (kvm
->mmu_notifier_seq
!= mmu_seq
)
1095 #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING
1097 #define KVM_MAX_IRQ_ROUTES 4096 /* might need extension/rework in the future */
1099 bool kvm_arch_can_set_irq_routing(struct kvm
*kvm
);
1100 int kvm_set_irq_routing(struct kvm
*kvm
,
1101 const struct kvm_irq_routing_entry
*entries
,
1104 int kvm_set_routing_entry(struct kvm
*kvm
,
1105 struct kvm_kernel_irq_routing_entry
*e
,
1106 const struct kvm_irq_routing_entry
*ue
);
1107 void kvm_free_irq_routing(struct kvm
*kvm
);
1111 static inline void kvm_free_irq_routing(struct kvm
*kvm
) {}
1115 int kvm_send_userspace_msi(struct kvm
*kvm
, struct kvm_msi
*msi
);
1117 #ifdef CONFIG_HAVE_KVM_EVENTFD
1119 void kvm_eventfd_init(struct kvm
*kvm
);
1120 int kvm_ioeventfd(struct kvm
*kvm
, struct kvm_ioeventfd
*args
);
1122 #ifdef CONFIG_HAVE_KVM_IRQFD
1123 int kvm_irqfd(struct kvm
*kvm
, struct kvm_irqfd
*args
);
1124 void kvm_irqfd_release(struct kvm
*kvm
);
1125 void kvm_irq_routing_update(struct kvm
*);
1127 static inline int kvm_irqfd(struct kvm
*kvm
, struct kvm_irqfd
*args
)
1132 static inline void kvm_irqfd_release(struct kvm
*kvm
) {}
1137 static inline void kvm_eventfd_init(struct kvm
*kvm
) {}
1139 static inline int kvm_irqfd(struct kvm
*kvm
, struct kvm_irqfd
*args
)
1144 static inline void kvm_irqfd_release(struct kvm
*kvm
) {}
1146 #ifdef CONFIG_HAVE_KVM_IRQCHIP
1147 static inline void kvm_irq_routing_update(struct kvm
*kvm
)
1152 static inline int kvm_ioeventfd(struct kvm
*kvm
, struct kvm_ioeventfd
*args
)
1157 #endif /* CONFIG_HAVE_KVM_EVENTFD */
1159 void kvm_arch_irq_routing_update(struct kvm
*kvm
);
1161 static inline void kvm_make_request(int req
, struct kvm_vcpu
*vcpu
)
1164 * Ensure the rest of the request is published to kvm_check_request's
1165 * caller. Paired with the smp_mb__after_atomic in kvm_check_request.
1168 set_bit(req
& KVM_REQUEST_MASK
, (void *)&vcpu
->requests
);
1171 static inline bool kvm_request_pending(struct kvm_vcpu
*vcpu
)
1173 return READ_ONCE(vcpu
->requests
);
1176 static inline bool kvm_test_request(int req
, struct kvm_vcpu
*vcpu
)
1178 return test_bit(req
& KVM_REQUEST_MASK
, (void *)&vcpu
->requests
);
1181 static inline void kvm_clear_request(int req
, struct kvm_vcpu
*vcpu
)
1183 clear_bit(req
& KVM_REQUEST_MASK
, (void *)&vcpu
->requests
);
1186 static inline bool kvm_check_request(int req
, struct kvm_vcpu
*vcpu
)
1188 if (kvm_test_request(req
, vcpu
)) {
1189 kvm_clear_request(req
, vcpu
);
1192 * Ensure the rest of the request is visible to kvm_check_request's
1193 * caller. Paired with the smp_wmb in kvm_make_request.
1195 smp_mb__after_atomic();
1202 extern bool kvm_rebooting
;
1204 extern unsigned int halt_poll_ns
;
1205 extern unsigned int halt_poll_ns_grow
;
1206 extern unsigned int halt_poll_ns_shrink
;
1209 struct kvm_device_ops
*ops
;
1212 struct list_head vm_node
;
1215 /* create, destroy, and name are mandatory */
1216 struct kvm_device_ops
{
1220 * create is called holding kvm->lock and any operations not suitable
1221 * to do while holding the lock should be deferred to init (see
1224 int (*create
)(struct kvm_device
*dev
, u32 type
);
1227 * init is called after create if create is successful and is called
1228 * outside of holding kvm->lock.
1230 void (*init
)(struct kvm_device
*dev
);
1233 * Destroy is responsible for freeing dev.
1235 * Destroy may be called before or after destructors are called
1236 * on emulated I/O regions, depending on whether a reference is
1237 * held by a vcpu or other kvm component that gets destroyed
1238 * after the emulated I/O.
1240 void (*destroy
)(struct kvm_device
*dev
);
1242 int (*set_attr
)(struct kvm_device
*dev
, struct kvm_device_attr
*attr
);
1243 int (*get_attr
)(struct kvm_device
*dev
, struct kvm_device_attr
*attr
);
1244 int (*has_attr
)(struct kvm_device
*dev
, struct kvm_device_attr
*attr
);
1245 long (*ioctl
)(struct kvm_device
*dev
, unsigned int ioctl
,
1249 void kvm_device_get(struct kvm_device
*dev
);
1250 void kvm_device_put(struct kvm_device
*dev
);
1251 struct kvm_device
*kvm_device_from_filp(struct file
*filp
);
1252 int kvm_register_device_ops(struct kvm_device_ops
*ops
, u32 type
);
1253 void kvm_unregister_device_ops(u32 type
);
1255 extern struct kvm_device_ops kvm_mpic_ops
;
1256 extern struct kvm_device_ops kvm_arm_vgic_v2_ops
;
1257 extern struct kvm_device_ops kvm_arm_vgic_v3_ops
;
1259 #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT
1261 static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu
*vcpu
, bool val
)
1263 vcpu
->spin_loop
.in_spin_loop
= val
;
1265 static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu
*vcpu
, bool val
)
1267 vcpu
->spin_loop
.dy_eligible
= val
;
1270 #else /* !CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */
1272 static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu
*vcpu
, bool val
)
1276 static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu
*vcpu
, bool val
)
1279 #endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */
1281 #ifdef CONFIG_HAVE_KVM_IRQ_BYPASS
1282 bool kvm_arch_has_irq_bypass(void);
1283 int kvm_arch_irq_bypass_add_producer(struct irq_bypass_consumer
*,
1284 struct irq_bypass_producer
*);
1285 void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer
*,
1286 struct irq_bypass_producer
*);
1287 void kvm_arch_irq_bypass_stop(struct irq_bypass_consumer
*);
1288 void kvm_arch_irq_bypass_start(struct irq_bypass_consumer
*);
1289 int kvm_arch_update_irqfd_routing(struct kvm
*kvm
, unsigned int host_irq
,
1290 uint32_t guest_irq
, bool set
);
1291 #endif /* CONFIG_HAVE_KVM_IRQ_BYPASS */
1293 #ifdef CONFIG_HAVE_KVM_INVALID_WAKEUPS
1294 /* If we wakeup during the poll time, was it a sucessful poll? */
1295 static inline bool vcpu_valid_wakeup(struct kvm_vcpu
*vcpu
)
1297 return vcpu
->valid_wakeup
;
1301 static inline bool vcpu_valid_wakeup(struct kvm_vcpu
*vcpu
)
1305 #endif /* CONFIG_HAVE_KVM_INVALID_WAKEUPS */
1307 #ifdef CONFIG_HAVE_KVM_VCPU_ASYNC_IOCTL
1308 long kvm_arch_vcpu_async_ioctl(struct file
*filp
,
1309 unsigned int ioctl
, unsigned long arg
);
1311 static inline long kvm_arch_vcpu_async_ioctl(struct file
*filp
,
1315 return -ENOIOCTLCMD
;
1317 #endif /* CONFIG_HAVE_KVM_VCPU_ASYNC_IOCTL */
1319 int kvm_arch_mmu_notifier_invalidate_range(struct kvm
*kvm
,
1320 unsigned long start
, unsigned long end
, bool blockable
);
1322 #ifdef CONFIG_HAVE_KVM_VCPU_RUN_PID_CHANGE
1323 int kvm_arch_vcpu_run_pid_change(struct kvm_vcpu
*vcpu
);
1325 static inline int kvm_arch_vcpu_run_pid_change(struct kvm_vcpu
*vcpu
)
1329 #endif /* CONFIG_HAVE_KVM_VCPU_RUN_PID_CHANGE */