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 <linux/nospec.h>
32 #include <asm/signal.h>
34 #include <linux/kvm.h>
35 #include <linux/kvm_para.h>
37 #include <linux/kvm_types.h>
39 #include <asm/kvm_host.h>
41 #ifndef KVM_MAX_VCPU_ID
42 #define KVM_MAX_VCPU_ID KVM_MAX_VCPUS
46 * The bit 16 ~ bit 31 of kvm_memory_region::flags are internally used
47 * in kvm, other bits are visible for userspace which are defined in
48 * include/linux/kvm_h.
50 #define KVM_MEMSLOT_INVALID (1UL << 16)
53 * Bit 63 of the memslot generation number is an "update in-progress flag",
54 * e.g. is temporarily set for the duration of install_new_memslots().
55 * This flag effectively creates a unique generation number that is used to
56 * mark cached memslot data, e.g. MMIO accesses, as potentially being stale,
57 * i.e. may (or may not) have come from the previous memslots generation.
59 * This is necessary because the actual memslots update is not atomic with
60 * respect to the generation number update. Updating the generation number
61 * first would allow a vCPU to cache a spte from the old memslots using the
62 * new generation number, and updating the generation number after switching
63 * to the new memslots would allow cache hits using the old generation number
64 * to reference the defunct memslots.
66 * This mechanism is used to prevent getting hits in KVM's caches while a
67 * memslot update is in-progress, and to prevent cache hits *after* updating
68 * the actual generation number against accesses that were inserted into the
69 * cache *before* the memslots were updated.
71 #define KVM_MEMSLOT_GEN_UPDATE_IN_PROGRESS BIT_ULL(63)
73 /* Two fragments for cross MMIO pages. */
74 #define KVM_MAX_MMIO_FRAGMENTS 2
76 #ifndef KVM_ADDRESS_SPACE_NUM
77 #define KVM_ADDRESS_SPACE_NUM 1
81 * For the normal pfn, the highest 12 bits should be zero,
82 * so we can mask bit 62 ~ bit 52 to indicate the error pfn,
83 * mask bit 63 to indicate the noslot pfn.
85 #define KVM_PFN_ERR_MASK (0x7ffULL << 52)
86 #define KVM_PFN_ERR_NOSLOT_MASK (0xfffULL << 52)
87 #define KVM_PFN_NOSLOT (0x1ULL << 63)
89 #define KVM_PFN_ERR_FAULT (KVM_PFN_ERR_MASK)
90 #define KVM_PFN_ERR_HWPOISON (KVM_PFN_ERR_MASK + 1)
91 #define KVM_PFN_ERR_RO_FAULT (KVM_PFN_ERR_MASK + 2)
94 * error pfns indicate that the gfn is in slot but faild to
95 * translate it to pfn on host.
97 static inline bool is_error_pfn(kvm_pfn_t pfn)
99 return !!(pfn & KVM_PFN_ERR_MASK);
103 * error_noslot pfns indicate that the gfn can not be
104 * translated to pfn - it is not in slot or failed to
105 * translate it to pfn.
107 static inline bool is_error_noslot_pfn(kvm_pfn_t pfn)
109 return !!(pfn & KVM_PFN_ERR_NOSLOT_MASK);
112 /* noslot pfn indicates that the gfn is not in slot. */
113 static inline bool is_noslot_pfn(kvm_pfn_t pfn)
115 return pfn == KVM_PFN_NOSLOT;
119 * architectures with KVM_HVA_ERR_BAD other than PAGE_OFFSET (e.g. s390)
120 * provide own defines and kvm_is_error_hva
122 #ifndef KVM_HVA_ERR_BAD
124 #define KVM_HVA_ERR_BAD (PAGE_OFFSET)
125 #define KVM_HVA_ERR_RO_BAD (PAGE_OFFSET + PAGE_SIZE)
127 static inline bool kvm_is_error_hva(unsigned long addr)
129 return addr >= PAGE_OFFSET;
134 #define KVM_ERR_PTR_BAD_PAGE (ERR_PTR(-ENOENT))
136 static inline bool is_error_page(struct page *page)
141 #define KVM_REQUEST_MASK GENMASK(7,0)
142 #define KVM_REQUEST_NO_WAKEUP BIT(8)
143 #define KVM_REQUEST_WAIT BIT(9)
145 * Architecture-independent vcpu->requests bit members
146 * Bits 4-7 are reserved for more arch-independent bits.
148 #define KVM_REQ_TLB_FLUSH (0 | KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
149 #define KVM_REQ_MMU_RELOAD (1 | KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
150 #define KVM_REQ_PENDING_TIMER 2
151 #define KVM_REQ_UNHALT 3
152 #define KVM_REQUEST_ARCH_BASE 8
154 #define KVM_ARCH_REQ_FLAGS(nr, flags) ({ \
155 BUILD_BUG_ON((unsigned)(nr) >= (FIELD_SIZEOF(struct kvm_vcpu, requests) * 8) - KVM_REQUEST_ARCH_BASE); \
156 (unsigned)(((nr) + KVM_REQUEST_ARCH_BASE) | (flags)); \
158 #define KVM_ARCH_REQ(nr) KVM_ARCH_REQ_FLAGS(nr, 0)
160 #define KVM_USERSPACE_IRQ_SOURCE_ID 0
161 #define KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID 1
163 extern struct kmem_cache *kvm_vcpu_cache;
165 extern spinlock_t kvm_lock;
166 extern struct list_head vm_list;
168 struct kvm_io_range {
171 struct kvm_io_device *dev;
174 #define NR_IOBUS_DEVS 1000
179 struct kvm_io_range range[];
185 KVM_VIRTIO_CCW_NOTIFY_BUS,
190 int kvm_io_bus_write(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr,
191 int len, const void *val);
192 int kvm_io_bus_write_cookie(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx,
193 gpa_t addr, int len, const void *val, long cookie);
194 int kvm_io_bus_read(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr,
196 int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr,
197 int len, struct kvm_io_device *dev);
198 void kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx,
199 struct kvm_io_device *dev);
200 struct kvm_io_device *kvm_io_bus_get_dev(struct kvm *kvm, enum kvm_bus bus_idx,
203 #ifdef CONFIG_KVM_ASYNC_PF
204 struct kvm_async_pf {
205 struct work_struct work;
206 struct list_head link;
207 struct list_head queue;
208 struct kvm_vcpu *vcpu;
209 struct mm_struct *mm;
212 struct kvm_arch_async_pf arch;
216 void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu);
217 void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu);
218 int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, unsigned long hva,
219 struct kvm_arch_async_pf *arch);
220 int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu);
227 READING_SHADOW_PAGE_TABLES,
230 #define KVM_UNMAPPED_PAGE ((void *) 0x500 + POISON_POINTER_DELTA)
232 struct kvm_host_map {
234 * Only valid if the 'pfn' is managed by the host kernel (i.e. There is
235 * a 'struct page' for it. When using mem= kernel parameter some memory
236 * can be used as guest memory but they are not managed by host
238 * If 'pfn' is not managed by the host kernel, this field is
239 * initialized to KVM_UNMAPPED_PAGE.
248 * Used to check if the mapping is valid or not. Never use 'kvm_host_map'
249 * directly to check for that.
251 static inline bool kvm_vcpu_mapped(struct kvm_host_map *map)
257 * Sometimes a large or cross-page mmio needs to be broken up into separate
258 * exits for userspace servicing.
260 struct kvm_mmio_fragment {
268 #ifdef CONFIG_PREEMPT_NOTIFIERS
269 struct preempt_notifier preempt_notifier;
276 unsigned long guest_debug;
279 struct list_head blocked_vcpu_list;
284 int guest_xcr0_loaded;
285 struct swait_queue_head wq;
286 struct pid __rcu *pid;
289 struct kvm_vcpu_stat stat;
290 unsigned int halt_poll_ns;
293 #ifdef CONFIG_HAS_IOMEM
295 int mmio_read_completed;
297 int mmio_cur_fragment;
298 int mmio_nr_fragments;
299 struct kvm_mmio_fragment mmio_fragments[KVM_MAX_MMIO_FRAGMENTS];
302 #ifdef CONFIG_KVM_ASYNC_PF
305 struct list_head queue;
306 struct list_head done;
311 #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT
313 * Cpu relax intercept or pause loop exit optimization
314 * in_spin_loop: set when a vcpu does a pause loop exit
315 * or cpu relax intercepted.
316 * dy_eligible: indicates whether vcpu is eligible for directed yield.
324 struct kvm_vcpu_arch arch;
325 struct dentry *debugfs_dentry;
328 static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu)
331 * The memory barrier ensures a previous write to vcpu->requests cannot
332 * be reordered with the read of vcpu->mode. It pairs with the general
333 * memory barrier following the write of vcpu->mode in VCPU RUN.
335 smp_mb__before_atomic();
336 return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE);
340 * Some of the bitops functions do not support too long bitmaps.
341 * This number must be determined not to exceed such limits.
343 #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1)
345 struct kvm_memory_slot {
347 unsigned long npages;
348 unsigned long *dirty_bitmap;
349 struct kvm_arch_memory_slot arch;
350 unsigned long userspace_addr;
355 static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot)
357 return ALIGN(memslot->npages, BITS_PER_LONG) / 8;
360 static inline unsigned long *kvm_second_dirty_bitmap(struct kvm_memory_slot *memslot)
362 unsigned long len = kvm_dirty_bitmap_bytes(memslot);
364 return memslot->dirty_bitmap + len / sizeof(*memslot->dirty_bitmap);
367 struct kvm_s390_adapter_int {
380 struct kvm_kernel_irq_routing_entry {
383 int (*set)(struct kvm_kernel_irq_routing_entry *e,
384 struct kvm *kvm, int irq_source_id, int level,
398 struct kvm_s390_adapter_int adapter;
399 struct kvm_hv_sint hv_sint;
401 struct hlist_node link;
404 #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING
405 struct kvm_irq_routing_table {
406 int chip[KVM_NR_IRQCHIPS][KVM_IRQCHIP_NUM_PINS];
409 * Array indexed by gsi. Each entry contains list of irq chips
410 * the gsi is connected to.
412 struct hlist_head map[0];
416 #ifndef KVM_PRIVATE_MEM_SLOTS
417 #define KVM_PRIVATE_MEM_SLOTS 0
420 #ifndef KVM_MEM_SLOTS_NUM
421 #define KVM_MEM_SLOTS_NUM (KVM_USER_MEM_SLOTS + KVM_PRIVATE_MEM_SLOTS)
424 #ifndef __KVM_VCPU_MULTIPLE_ADDRESS_SPACE
425 static inline int kvm_arch_vcpu_memslots_id(struct kvm_vcpu *vcpu)
433 * memslots are not sorted by id anymore, please use id_to_memslot()
434 * to get the memslot by its id.
436 struct kvm_memslots {
438 struct kvm_memory_slot memslots[KVM_MEM_SLOTS_NUM];
439 /* The mapping table from slot id to the index in memslots[]. */
440 short id_to_index[KVM_MEM_SLOTS_NUM];
447 struct mutex slots_lock;
448 struct mm_struct *mm; /* userspace tied to this vm */
449 struct kvm_memslots __rcu *memslots[KVM_ADDRESS_SPACE_NUM];
450 struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
453 * created_vcpus is protected by kvm->lock, and is incremented
454 * at the beginning of KVM_CREATE_VCPU. online_vcpus is only
455 * incremented after storing the kvm_vcpu pointer in vcpus,
456 * and is accessed atomically.
458 atomic_t online_vcpus;
460 int last_boosted_vcpu;
461 struct list_head vm_list;
463 struct kvm_io_bus __rcu *buses[KVM_NR_BUSES];
464 #ifdef CONFIG_HAVE_KVM_EVENTFD
467 struct list_head items;
468 struct list_head resampler_list;
469 struct mutex resampler_lock;
471 struct list_head ioeventfds;
473 struct kvm_vm_stat stat;
474 struct kvm_arch arch;
475 refcount_t users_count;
476 #ifdef CONFIG_KVM_MMIO
477 struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
478 spinlock_t ring_lock;
479 struct list_head coalesced_zones;
482 struct mutex irq_lock;
483 #ifdef CONFIG_HAVE_KVM_IRQCHIP
485 * Update side is protected by irq_lock.
487 struct kvm_irq_routing_table __rcu *irq_routing;
489 #ifdef CONFIG_HAVE_KVM_IRQFD
490 struct hlist_head irq_ack_notifier_list;
493 #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER)
494 struct mmu_notifier mmu_notifier;
495 unsigned long mmu_notifier_seq;
496 long mmu_notifier_count;
499 struct list_head devices;
500 bool manual_dirty_log_protect;
501 struct dentry *debugfs_dentry;
502 struct kvm_stat_data **debugfs_stat_data;
503 struct srcu_struct srcu;
504 struct srcu_struct irq_srcu;
508 #define kvm_err(fmt, ...) \
509 pr_err("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__)
510 #define kvm_info(fmt, ...) \
511 pr_info("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__)
512 #define kvm_debug(fmt, ...) \
513 pr_debug("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__)
514 #define kvm_debug_ratelimited(fmt, ...) \
515 pr_debug_ratelimited("kvm [%i]: " fmt, task_pid_nr(current), \
517 #define kvm_pr_unimpl(fmt, ...) \
518 pr_err_ratelimited("kvm [%i]: " fmt, \
519 task_tgid_nr(current), ## __VA_ARGS__)
521 /* The guest did something we don't support. */
522 #define vcpu_unimpl(vcpu, fmt, ...) \
523 kvm_pr_unimpl("vcpu%i, guest rIP: 0x%lx " fmt, \
524 (vcpu)->vcpu_id, kvm_rip_read(vcpu), ## __VA_ARGS__)
526 #define vcpu_debug(vcpu, fmt, ...) \
527 kvm_debug("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__)
528 #define vcpu_debug_ratelimited(vcpu, fmt, ...) \
529 kvm_debug_ratelimited("vcpu%i " fmt, (vcpu)->vcpu_id, \
531 #define vcpu_err(vcpu, fmt, ...) \
532 kvm_err("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__)
534 static inline struct kvm_io_bus *kvm_get_bus(struct kvm *kvm, enum kvm_bus idx)
536 return srcu_dereference_check(kvm->buses[idx], &kvm->srcu,
537 lockdep_is_held(&kvm->slots_lock) ||
538 !refcount_read(&kvm->users_count));
541 static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i)
543 int num_vcpus = atomic_read(&kvm->online_vcpus);
544 i = array_index_nospec(i, num_vcpus);
546 /* Pairs with smp_wmb() in kvm_vm_ioctl_create_vcpu. */
548 return kvm->vcpus[i];
551 #define kvm_for_each_vcpu(idx, vcpup, kvm) \
553 idx < atomic_read(&kvm->online_vcpus) && \
554 (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \
557 static inline struct kvm_vcpu *kvm_get_vcpu_by_id(struct kvm *kvm, int id)
559 struct kvm_vcpu *vcpu = NULL;
564 if (id < KVM_MAX_VCPUS)
565 vcpu = kvm_get_vcpu(kvm, id);
566 if (vcpu && vcpu->vcpu_id == id)
568 kvm_for_each_vcpu(i, vcpu, kvm)
569 if (vcpu->vcpu_id == id)
574 static inline int kvm_vcpu_get_idx(struct kvm_vcpu *vcpu)
576 struct kvm_vcpu *tmp;
579 kvm_for_each_vcpu(idx, tmp, vcpu->kvm)
585 #define kvm_for_each_memslot(memslot, slots) \
586 for (memslot = &slots->memslots[0]; \
587 memslot < slots->memslots + KVM_MEM_SLOTS_NUM && memslot->npages;\
590 int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id);
591 void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
593 void vcpu_load(struct kvm_vcpu *vcpu);
594 void vcpu_put(struct kvm_vcpu *vcpu);
596 #ifdef __KVM_HAVE_IOAPIC
597 void kvm_arch_post_irq_ack_notifier_list_update(struct kvm *kvm);
598 void kvm_arch_post_irq_routing_update(struct kvm *kvm);
600 static inline void kvm_arch_post_irq_ack_notifier_list_update(struct kvm *kvm)
603 static inline void kvm_arch_post_irq_routing_update(struct kvm *kvm)
608 #ifdef CONFIG_HAVE_KVM_IRQFD
609 int kvm_irqfd_init(void);
610 void kvm_irqfd_exit(void);
612 static inline int kvm_irqfd_init(void)
617 static inline void kvm_irqfd_exit(void)
621 int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align,
622 struct module *module);
625 void kvm_get_kvm(struct kvm *kvm);
626 void kvm_put_kvm(struct kvm *kvm);
628 static inline struct kvm_memslots *__kvm_memslots(struct kvm *kvm, int as_id)
630 as_id = array_index_nospec(as_id, KVM_ADDRESS_SPACE_NUM);
631 return srcu_dereference_check(kvm->memslots[as_id], &kvm->srcu,
632 lockdep_is_held(&kvm->slots_lock) ||
633 !refcount_read(&kvm->users_count));
636 static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm)
638 return __kvm_memslots(kvm, 0);
641 static inline struct kvm_memslots *kvm_vcpu_memslots(struct kvm_vcpu *vcpu)
643 int as_id = kvm_arch_vcpu_memslots_id(vcpu);
645 return __kvm_memslots(vcpu->kvm, as_id);
648 static inline struct kvm_memory_slot *
649 id_to_memslot(struct kvm_memslots *slots, int id)
651 int index = slots->id_to_index[id];
652 struct kvm_memory_slot *slot;
654 slot = &slots->memslots[index];
656 WARN_ON(slot->id != id);
661 * KVM_SET_USER_MEMORY_REGION ioctl allows the following operations:
662 * - create a new memory slot
663 * - delete an existing memory slot
664 * - modify an existing memory slot
665 * -- move it in the guest physical memory space
666 * -- just change its flags
668 * Since flags can be changed by some of these operations, the following
669 * differentiation is the best we can do for __kvm_set_memory_region():
678 int kvm_set_memory_region(struct kvm *kvm,
679 const struct kvm_userspace_memory_region *mem);
680 int __kvm_set_memory_region(struct kvm *kvm,
681 const struct kvm_userspace_memory_region *mem);
682 void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free,
683 struct kvm_memory_slot *dont);
684 int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot,
685 unsigned long npages);
686 void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen);
687 int kvm_arch_prepare_memory_region(struct kvm *kvm,
688 struct kvm_memory_slot *memslot,
689 const struct kvm_userspace_memory_region *mem,
690 enum kvm_mr_change change);
691 void kvm_arch_commit_memory_region(struct kvm *kvm,
692 const struct kvm_userspace_memory_region *mem,
693 const struct kvm_memory_slot *old,
694 const struct kvm_memory_slot *new,
695 enum kvm_mr_change change);
696 bool kvm_largepages_enabled(void);
697 void kvm_disable_largepages(void);
698 /* flush all memory translations */
699 void kvm_arch_flush_shadow_all(struct kvm *kvm);
700 /* flush memory translations pointing to 'slot' */
701 void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
702 struct kvm_memory_slot *slot);
704 int gfn_to_page_many_atomic(struct kvm_memory_slot *slot, gfn_t gfn,
705 struct page **pages, int nr_pages);
707 struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn);
708 unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn);
709 unsigned long gfn_to_hva_prot(struct kvm *kvm, gfn_t gfn, bool *writable);
710 unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn);
711 unsigned long gfn_to_hva_memslot_prot(struct kvm_memory_slot *slot, gfn_t gfn,
713 void kvm_release_page_clean(struct page *page);
714 void kvm_release_page_dirty(struct page *page);
715 void kvm_set_page_accessed(struct page *page);
717 kvm_pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn);
718 kvm_pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn);
719 kvm_pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault,
721 kvm_pfn_t gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn);
722 kvm_pfn_t gfn_to_pfn_memslot_atomic(struct kvm_memory_slot *slot, gfn_t gfn);
723 kvm_pfn_t __gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn,
724 bool atomic, bool *async, bool write_fault,
727 void kvm_release_pfn_clean(kvm_pfn_t pfn);
728 void kvm_release_pfn_dirty(kvm_pfn_t pfn);
729 void kvm_set_pfn_dirty(kvm_pfn_t pfn);
730 void kvm_set_pfn_accessed(kvm_pfn_t pfn);
731 void kvm_get_pfn(kvm_pfn_t pfn);
733 int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset,
735 int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data,
737 int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len);
738 int kvm_read_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
739 void *data, unsigned long len);
740 int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data,
741 int offset, int len);
742 int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data,
744 int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
745 void *data, unsigned long len);
746 int kvm_write_guest_offset_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
747 void *data, unsigned int offset,
749 int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
750 gpa_t gpa, unsigned long len);
751 int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
752 int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
753 struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
754 bool kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
755 unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn);
756 void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
758 struct kvm_memslots *kvm_vcpu_memslots(struct kvm_vcpu *vcpu);
759 struct kvm_memory_slot *kvm_vcpu_gfn_to_memslot(struct kvm_vcpu *vcpu, gfn_t gfn);
760 kvm_pfn_t kvm_vcpu_gfn_to_pfn_atomic(struct kvm_vcpu *vcpu, gfn_t gfn);
761 kvm_pfn_t kvm_vcpu_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn);
762 int kvm_vcpu_map(struct kvm_vcpu *vcpu, gpa_t gpa, struct kvm_host_map *map);
763 struct page *kvm_vcpu_gfn_to_page(struct kvm_vcpu *vcpu, gfn_t gfn);
764 void kvm_vcpu_unmap(struct kvm_vcpu *vcpu, struct kvm_host_map *map, bool dirty);
765 unsigned long kvm_vcpu_gfn_to_hva(struct kvm_vcpu *vcpu, gfn_t gfn);
766 unsigned long kvm_vcpu_gfn_to_hva_prot(struct kvm_vcpu *vcpu, gfn_t gfn, bool *writable);
767 int kvm_vcpu_read_guest_page(struct kvm_vcpu *vcpu, gfn_t gfn, void *data, int offset,
769 int kvm_vcpu_read_guest_atomic(struct kvm_vcpu *vcpu, gpa_t gpa, void *data,
771 int kvm_vcpu_read_guest(struct kvm_vcpu *vcpu, gpa_t gpa, void *data,
773 int kvm_vcpu_write_guest_page(struct kvm_vcpu *vcpu, gfn_t gfn, const void *data,
774 int offset, int len);
775 int kvm_vcpu_write_guest(struct kvm_vcpu *vcpu, gpa_t gpa, const void *data,
777 void kvm_vcpu_mark_page_dirty(struct kvm_vcpu *vcpu, gfn_t gfn);
779 void kvm_sigset_activate(struct kvm_vcpu *vcpu);
780 void kvm_sigset_deactivate(struct kvm_vcpu *vcpu);
782 void kvm_vcpu_block(struct kvm_vcpu *vcpu);
783 void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu);
784 void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu);
785 bool kvm_vcpu_wake_up(struct kvm_vcpu *vcpu);
786 void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
787 int kvm_vcpu_yield_to(struct kvm_vcpu *target);
788 void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu, bool usermode_vcpu_not_eligible);
790 void kvm_flush_remote_tlbs(struct kvm *kvm);
791 void kvm_reload_remote_mmus(struct kvm *kvm);
793 bool kvm_make_vcpus_request_mask(struct kvm *kvm, unsigned int req,
794 unsigned long *vcpu_bitmap, cpumask_var_t tmp);
795 bool kvm_make_all_cpus_request(struct kvm *kvm, unsigned int req);
797 long kvm_arch_dev_ioctl(struct file *filp,
798 unsigned int ioctl, unsigned long arg);
799 long kvm_arch_vcpu_ioctl(struct file *filp,
800 unsigned int ioctl, unsigned long arg);
801 vm_fault_t kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf);
803 int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext);
805 int kvm_get_dirty_log(struct kvm *kvm,
806 struct kvm_dirty_log *log, int *is_dirty);
808 int kvm_get_dirty_log_protect(struct kvm *kvm,
809 struct kvm_dirty_log *log, bool *flush);
810 int kvm_clear_dirty_log_protect(struct kvm *kvm,
811 struct kvm_clear_dirty_log *log, bool *flush);
813 void kvm_arch_mmu_enable_log_dirty_pt_masked(struct kvm *kvm,
814 struct kvm_memory_slot *slot,
818 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
819 struct kvm_dirty_log *log);
820 int kvm_vm_ioctl_clear_dirty_log(struct kvm *kvm,
821 struct kvm_clear_dirty_log *log);
823 int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_level,
825 int kvm_vm_ioctl_enable_cap(struct kvm *kvm,
826 struct kvm_enable_cap *cap);
827 long kvm_arch_vm_ioctl(struct file *filp,
828 unsigned int ioctl, unsigned long arg);
830 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
831 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
833 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
834 struct kvm_translation *tr);
836 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
837 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
838 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
839 struct kvm_sregs *sregs);
840 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
841 struct kvm_sregs *sregs);
842 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
843 struct kvm_mp_state *mp_state);
844 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
845 struct kvm_mp_state *mp_state);
846 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
847 struct kvm_guest_debug *dbg);
848 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run);
850 int kvm_arch_init(void *opaque);
851 void kvm_arch_exit(void);
853 int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu);
854 void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu);
856 void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu);
858 void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu);
859 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
860 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
861 struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id);
862 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu);
863 void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu);
864 void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu);
866 bool kvm_arch_has_vcpu_debugfs(void);
867 int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu);
869 int kvm_arch_hardware_enable(void);
870 void kvm_arch_hardware_disable(void);
871 int kvm_arch_hardware_setup(void);
872 void kvm_arch_hardware_unsetup(void);
873 int kvm_arch_check_processor_compat(void);
874 int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu);
875 bool kvm_arch_vcpu_in_kernel(struct kvm_vcpu *vcpu);
876 int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu);
878 #ifndef __KVM_HAVE_ARCH_VM_ALLOC
880 * All architectures that want to use vzalloc currently also
881 * need their own kvm_arch_alloc_vm implementation.
883 static inline struct kvm *kvm_arch_alloc_vm(void)
885 return kzalloc(sizeof(struct kvm), GFP_KERNEL);
888 static inline void kvm_arch_free_vm(struct kvm *kvm)
894 #ifndef __KVM_HAVE_ARCH_FLUSH_REMOTE_TLB
895 static inline int kvm_arch_flush_remote_tlb(struct kvm *kvm)
901 #ifdef __KVM_HAVE_ARCH_NONCOHERENT_DMA
902 void kvm_arch_register_noncoherent_dma(struct kvm *kvm);
903 void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm);
904 bool kvm_arch_has_noncoherent_dma(struct kvm *kvm);
906 static inline void kvm_arch_register_noncoherent_dma(struct kvm *kvm)
910 static inline void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm)
914 static inline bool kvm_arch_has_noncoherent_dma(struct kvm *kvm)
919 #ifdef __KVM_HAVE_ARCH_ASSIGNED_DEVICE
920 void kvm_arch_start_assignment(struct kvm *kvm);
921 void kvm_arch_end_assignment(struct kvm *kvm);
922 bool kvm_arch_has_assigned_device(struct kvm *kvm);
924 static inline void kvm_arch_start_assignment(struct kvm *kvm)
928 static inline void kvm_arch_end_assignment(struct kvm *kvm)
932 static inline bool kvm_arch_has_assigned_device(struct kvm *kvm)
938 static inline struct swait_queue_head *kvm_arch_vcpu_wq(struct kvm_vcpu *vcpu)
940 #ifdef __KVM_HAVE_ARCH_WQP
941 return vcpu->arch.wqp;
947 #ifdef __KVM_HAVE_ARCH_INTC_INITIALIZED
949 * returns true if the virtual interrupt controller is initialized and
950 * ready to accept virtual IRQ. On some architectures the virtual interrupt
951 * controller is dynamically instantiated and this is not always true.
953 bool kvm_arch_intc_initialized(struct kvm *kvm);
955 static inline bool kvm_arch_intc_initialized(struct kvm *kvm)
961 int kvm_arch_init_vm(struct kvm *kvm, unsigned long type);
962 void kvm_arch_destroy_vm(struct kvm *kvm);
963 void kvm_arch_sync_events(struct kvm *kvm);
965 int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu);
966 void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
968 bool kvm_is_reserved_pfn(kvm_pfn_t pfn);
970 struct kvm_irq_ack_notifier {
971 struct hlist_node link;
973 void (*irq_acked)(struct kvm_irq_ack_notifier *kian);
976 int kvm_irq_map_gsi(struct kvm *kvm,
977 struct kvm_kernel_irq_routing_entry *entries, int gsi);
978 int kvm_irq_map_chip_pin(struct kvm *kvm, unsigned irqchip, unsigned pin);
980 int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level,
982 int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm,
983 int irq_source_id, int level, bool line_status);
984 int kvm_arch_set_irq_inatomic(struct kvm_kernel_irq_routing_entry *e,
985 struct kvm *kvm, int irq_source_id,
986 int level, bool line_status);
987 bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin);
988 void kvm_notify_acked_gsi(struct kvm *kvm, int gsi);
989 void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin);
990 void kvm_register_irq_ack_notifier(struct kvm *kvm,
991 struct kvm_irq_ack_notifier *kian);
992 void kvm_unregister_irq_ack_notifier(struct kvm *kvm,
993 struct kvm_irq_ack_notifier *kian);
994 int kvm_request_irq_source_id(struct kvm *kvm);
995 void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id);
998 * search_memslots() and __gfn_to_memslot() are here because they are
999 * used in non-modular code in arch/powerpc/kvm/book3s_hv_rm_mmu.c.
1000 * gfn_to_memslot() itself isn't here as an inline because that would
1001 * bloat other code too much.
1003 static inline struct kvm_memory_slot *
1004 search_memslots(struct kvm_memslots *slots, gfn_t gfn)
1006 int start = 0, end = slots->used_slots;
1007 int slot = atomic_read(&slots->lru_slot);
1008 struct kvm_memory_slot *memslots = slots->memslots;
1010 if (gfn >= memslots[slot].base_gfn &&
1011 gfn < memslots[slot].base_gfn + memslots[slot].npages)
1012 return &memslots[slot];
1014 while (start < end) {
1015 slot = start + (end - start) / 2;
1017 if (gfn >= memslots[slot].base_gfn)
1023 if (gfn >= memslots[start].base_gfn &&
1024 gfn < memslots[start].base_gfn + memslots[start].npages) {
1025 atomic_set(&slots->lru_slot, start);
1026 return &memslots[start];
1032 static inline struct kvm_memory_slot *
1033 __gfn_to_memslot(struct kvm_memslots *slots, gfn_t gfn)
1035 return search_memslots(slots, gfn);
1038 static inline unsigned long
1039 __gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn)
1041 return slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE;
1044 static inline int memslot_id(struct kvm *kvm, gfn_t gfn)
1046 return gfn_to_memslot(kvm, gfn)->id;
1050 hva_to_gfn_memslot(unsigned long hva, struct kvm_memory_slot *slot)
1052 gfn_t gfn_offset = (hva - slot->userspace_addr) >> PAGE_SHIFT;
1054 return slot->base_gfn + gfn_offset;
1057 static inline gpa_t gfn_to_gpa(gfn_t gfn)
1059 return (gpa_t)gfn << PAGE_SHIFT;
1062 static inline gfn_t gpa_to_gfn(gpa_t gpa)
1064 return (gfn_t)(gpa >> PAGE_SHIFT);
1067 static inline hpa_t pfn_to_hpa(kvm_pfn_t pfn)
1069 return (hpa_t)pfn << PAGE_SHIFT;
1072 static inline struct page *kvm_vcpu_gpa_to_page(struct kvm_vcpu *vcpu,
1075 return kvm_vcpu_gfn_to_page(vcpu, gpa_to_gfn(gpa));
1078 static inline bool kvm_is_error_gpa(struct kvm *kvm, gpa_t gpa)
1080 unsigned long hva = gfn_to_hva(kvm, gpa_to_gfn(gpa));
1082 return kvm_is_error_hva(hva);
1085 enum kvm_stat_kind {
1090 struct kvm_stat_data {
1095 struct kvm_stats_debugfs_item {
1098 enum kvm_stat_kind kind;
1100 extern struct kvm_stats_debugfs_item debugfs_entries[];
1101 extern struct dentry *kvm_debugfs_dir;
1103 #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER)
1104 static inline int mmu_notifier_retry(struct kvm *kvm, unsigned long mmu_seq)
1106 if (unlikely(kvm->mmu_notifier_count))
1109 * Ensure the read of mmu_notifier_count happens before the read
1110 * of mmu_notifier_seq. This interacts with the smp_wmb() in
1111 * mmu_notifier_invalidate_range_end to make sure that the caller
1112 * either sees the old (non-zero) value of mmu_notifier_count or
1113 * the new (incremented) value of mmu_notifier_seq.
1114 * PowerPC Book3s HV KVM calls this under a per-page lock
1115 * rather than under kvm->mmu_lock, for scalability, so
1116 * can't rely on kvm->mmu_lock to keep things ordered.
1119 if (kvm->mmu_notifier_seq != mmu_seq)
1125 #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING
1127 #define KVM_MAX_IRQ_ROUTES 4096 /* might need extension/rework in the future */
1129 bool kvm_arch_can_set_irq_routing(struct kvm *kvm);
1130 int kvm_set_irq_routing(struct kvm *kvm,
1131 const struct kvm_irq_routing_entry *entries,
1134 int kvm_set_routing_entry(struct kvm *kvm,
1135 struct kvm_kernel_irq_routing_entry *e,
1136 const struct kvm_irq_routing_entry *ue);
1137 void kvm_free_irq_routing(struct kvm *kvm);
1141 static inline void kvm_free_irq_routing(struct kvm *kvm) {}
1145 int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi);
1147 #ifdef CONFIG_HAVE_KVM_EVENTFD
1149 void kvm_eventfd_init(struct kvm *kvm);
1150 int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args);
1152 #ifdef CONFIG_HAVE_KVM_IRQFD
1153 int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args);
1154 void kvm_irqfd_release(struct kvm *kvm);
1155 void kvm_irq_routing_update(struct kvm *);
1157 static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args)
1162 static inline void kvm_irqfd_release(struct kvm *kvm) {}
1167 static inline void kvm_eventfd_init(struct kvm *kvm) {}
1169 static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args)
1174 static inline void kvm_irqfd_release(struct kvm *kvm) {}
1176 #ifdef CONFIG_HAVE_KVM_IRQCHIP
1177 static inline void kvm_irq_routing_update(struct kvm *kvm)
1182 static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
1187 #endif /* CONFIG_HAVE_KVM_EVENTFD */
1189 void kvm_arch_irq_routing_update(struct kvm *kvm);
1191 static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu)
1194 * Ensure the rest of the request is published to kvm_check_request's
1195 * caller. Paired with the smp_mb__after_atomic in kvm_check_request.
1198 set_bit(req & KVM_REQUEST_MASK, (void *)&vcpu->requests);
1201 static inline bool kvm_request_pending(struct kvm_vcpu *vcpu)
1203 return READ_ONCE(vcpu->requests);
1206 static inline bool kvm_test_request(int req, struct kvm_vcpu *vcpu)
1208 return test_bit(req & KVM_REQUEST_MASK, (void *)&vcpu->requests);
1211 static inline void kvm_clear_request(int req, struct kvm_vcpu *vcpu)
1213 clear_bit(req & KVM_REQUEST_MASK, (void *)&vcpu->requests);
1216 static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu)
1218 if (kvm_test_request(req, vcpu)) {
1219 kvm_clear_request(req, vcpu);
1222 * Ensure the rest of the request is visible to kvm_check_request's
1223 * caller. Paired with the smp_wmb in kvm_make_request.
1225 smp_mb__after_atomic();
1232 extern bool kvm_rebooting;
1234 extern unsigned int halt_poll_ns;
1235 extern unsigned int halt_poll_ns_grow;
1236 extern unsigned int halt_poll_ns_grow_start;
1237 extern unsigned int halt_poll_ns_shrink;
1240 struct kvm_device_ops *ops;
1243 struct list_head vm_node;
1246 /* create, destroy, and name are mandatory */
1247 struct kvm_device_ops {
1251 * create is called holding kvm->lock and any operations not suitable
1252 * to do while holding the lock should be deferred to init (see
1255 int (*create)(struct kvm_device *dev, u32 type);
1258 * init is called after create if create is successful and is called
1259 * outside of holding kvm->lock.
1261 void (*init)(struct kvm_device *dev);
1264 * Destroy is responsible for freeing dev.
1266 * Destroy may be called before or after destructors are called
1267 * on emulated I/O regions, depending on whether a reference is
1268 * held by a vcpu or other kvm component that gets destroyed
1269 * after the emulated I/O.
1271 void (*destroy)(struct kvm_device *dev);
1274 * Release is an alternative method to free the device. It is
1275 * called when the device file descriptor is closed. Once
1276 * release is called, the destroy method will not be called
1277 * anymore as the device is removed from the device list of
1278 * the VM. kvm->lock is held.
1280 void (*release)(struct kvm_device *dev);
1282 int (*set_attr)(struct kvm_device *dev, struct kvm_device_attr *attr);
1283 int (*get_attr)(struct kvm_device *dev, struct kvm_device_attr *attr);
1284 int (*has_attr)(struct kvm_device *dev, struct kvm_device_attr *attr);
1285 long (*ioctl)(struct kvm_device *dev, unsigned int ioctl,
1287 int (*mmap)(struct kvm_device *dev, struct vm_area_struct *vma);
1290 void kvm_device_get(struct kvm_device *dev);
1291 void kvm_device_put(struct kvm_device *dev);
1292 struct kvm_device *kvm_device_from_filp(struct file *filp);
1293 int kvm_register_device_ops(struct kvm_device_ops *ops, u32 type);
1294 void kvm_unregister_device_ops(u32 type);
1296 extern struct kvm_device_ops kvm_mpic_ops;
1297 extern struct kvm_device_ops kvm_arm_vgic_v2_ops;
1298 extern struct kvm_device_ops kvm_arm_vgic_v3_ops;
1300 #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT
1302 static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val)
1304 vcpu->spin_loop.in_spin_loop = val;
1306 static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val)
1308 vcpu->spin_loop.dy_eligible = val;
1311 #else /* !CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */
1313 static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val)
1317 static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val)
1320 #endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */
1322 #ifdef CONFIG_HAVE_KVM_IRQ_BYPASS
1323 bool kvm_arch_has_irq_bypass(void);
1324 int kvm_arch_irq_bypass_add_producer(struct irq_bypass_consumer *,
1325 struct irq_bypass_producer *);
1326 void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer *,
1327 struct irq_bypass_producer *);
1328 void kvm_arch_irq_bypass_stop(struct irq_bypass_consumer *);
1329 void kvm_arch_irq_bypass_start(struct irq_bypass_consumer *);
1330 int kvm_arch_update_irqfd_routing(struct kvm *kvm, unsigned int host_irq,
1331 uint32_t guest_irq, bool set);
1332 #endif /* CONFIG_HAVE_KVM_IRQ_BYPASS */
1334 #ifdef CONFIG_HAVE_KVM_INVALID_WAKEUPS
1335 /* If we wakeup during the poll time, was it a sucessful poll? */
1336 static inline bool vcpu_valid_wakeup(struct kvm_vcpu *vcpu)
1338 return vcpu->valid_wakeup;
1342 static inline bool vcpu_valid_wakeup(struct kvm_vcpu *vcpu)
1346 #endif /* CONFIG_HAVE_KVM_INVALID_WAKEUPS */
1348 #ifdef CONFIG_HAVE_KVM_NO_POLL
1349 /* Callback that tells if we must not poll */
1350 bool kvm_arch_no_poll(struct kvm_vcpu *vcpu);
1352 static inline bool kvm_arch_no_poll(struct kvm_vcpu *vcpu)
1356 #endif /* CONFIG_HAVE_KVM_NO_POLL */
1358 #ifdef CONFIG_HAVE_KVM_VCPU_ASYNC_IOCTL
1359 long kvm_arch_vcpu_async_ioctl(struct file *filp,
1360 unsigned int ioctl, unsigned long arg);
1362 static inline long kvm_arch_vcpu_async_ioctl(struct file *filp,
1366 return -ENOIOCTLCMD;
1368 #endif /* CONFIG_HAVE_KVM_VCPU_ASYNC_IOCTL */
1370 int kvm_arch_mmu_notifier_invalidate_range(struct kvm *kvm,
1371 unsigned long start, unsigned long end, bool blockable);
1373 #ifdef CONFIG_HAVE_KVM_VCPU_RUN_PID_CHANGE
1374 int kvm_arch_vcpu_run_pid_change(struct kvm_vcpu *vcpu);
1376 static inline int kvm_arch_vcpu_run_pid_change(struct kvm_vcpu *vcpu)
1380 #endif /* CONFIG_HAVE_KVM_VCPU_RUN_PID_CHANGE */