1 /* SPDX-License-Identifier: GPL-2.0-only */
6 #include <linux/types.h>
7 #include <linux/hardirq.h>
8 #include <linux/list.h>
9 #include <linux/mutex.h>
10 #include <linux/spinlock.h>
11 #include <linux/signal.h>
12 #include <linux/sched.h>
13 #include <linux/bug.h>
15 #include <linux/mmu_notifier.h>
16 #include <linux/preempt.h>
17 #include <linux/msi.h>
18 #include <linux/slab.h>
19 #include <linux/vmalloc.h>
20 #include <linux/rcupdate.h>
21 #include <linux/ratelimit.h>
22 #include <linux/err.h>
23 #include <linux/irqflags.h>
24 #include <linux/context_tracking.h>
25 #include <linux/irqbypass.h>
26 #include <linux/swait.h>
27 #include <linux/refcount.h>
28 #include <linux/nospec.h>
29 #include <asm/signal.h>
31 #include <linux/kvm.h>
32 #include <linux/kvm_para.h>
34 #include <linux/kvm_types.h>
36 #include <asm/kvm_host.h>
38 #ifndef KVM_MAX_VCPU_ID
39 #define KVM_MAX_VCPU_ID KVM_MAX_VCPUS
43 * The bit 16 ~ bit 31 of kvm_memory_region::flags are internally used
44 * in kvm, other bits are visible for userspace which are defined in
45 * include/linux/kvm_h.
47 #define KVM_MEMSLOT_INVALID (1UL << 16)
50 * Bit 63 of the memslot generation number is an "update in-progress flag",
51 * e.g. is temporarily set for the duration of install_new_memslots().
52 * This flag effectively creates a unique generation number that is used to
53 * mark cached memslot data, e.g. MMIO accesses, as potentially being stale,
54 * i.e. may (or may not) have come from the previous memslots generation.
56 * This is necessary because the actual memslots update is not atomic with
57 * respect to the generation number update. Updating the generation number
58 * first would allow a vCPU to cache a spte from the old memslots using the
59 * new generation number, and updating the generation number after switching
60 * to the new memslots would allow cache hits using the old generation number
61 * to reference the defunct memslots.
63 * This mechanism is used to prevent getting hits in KVM's caches while a
64 * memslot update is in-progress, and to prevent cache hits *after* updating
65 * the actual generation number against accesses that were inserted into the
66 * cache *before* the memslots were updated.
68 #define KVM_MEMSLOT_GEN_UPDATE_IN_PROGRESS BIT_ULL(63)
70 /* Two fragments for cross MMIO pages. */
71 #define KVM_MAX_MMIO_FRAGMENTS 2
73 #ifndef KVM_ADDRESS_SPACE_NUM
74 #define KVM_ADDRESS_SPACE_NUM 1
78 * For the normal pfn, the highest 12 bits should be zero,
79 * so we can mask bit 62 ~ bit 52 to indicate the error pfn,
80 * mask bit 63 to indicate the noslot pfn.
82 #define KVM_PFN_ERR_MASK (0x7ffULL << 52)
83 #define KVM_PFN_ERR_NOSLOT_MASK (0xfffULL << 52)
84 #define KVM_PFN_NOSLOT (0x1ULL << 63)
86 #define KVM_PFN_ERR_FAULT (KVM_PFN_ERR_MASK)
87 #define KVM_PFN_ERR_HWPOISON (KVM_PFN_ERR_MASK + 1)
88 #define KVM_PFN_ERR_RO_FAULT (KVM_PFN_ERR_MASK + 2)
91 * error pfns indicate that the gfn is in slot but faild to
92 * translate it to pfn on host.
94 static inline bool is_error_pfn(kvm_pfn_t pfn)
96 return !!(pfn & KVM_PFN_ERR_MASK);
100 * error_noslot pfns indicate that the gfn can not be
101 * translated to pfn - it is not in slot or failed to
102 * translate it to pfn.
104 static inline bool is_error_noslot_pfn(kvm_pfn_t pfn)
106 return !!(pfn & KVM_PFN_ERR_NOSLOT_MASK);
109 /* noslot pfn indicates that the gfn is not in slot. */
110 static inline bool is_noslot_pfn(kvm_pfn_t pfn)
112 return pfn == KVM_PFN_NOSLOT;
116 * architectures with KVM_HVA_ERR_BAD other than PAGE_OFFSET (e.g. s390)
117 * provide own defines and kvm_is_error_hva
119 #ifndef KVM_HVA_ERR_BAD
121 #define KVM_HVA_ERR_BAD (PAGE_OFFSET)
122 #define KVM_HVA_ERR_RO_BAD (PAGE_OFFSET + PAGE_SIZE)
124 static inline bool kvm_is_error_hva(unsigned long addr)
126 return addr >= PAGE_OFFSET;
131 #define KVM_ERR_PTR_BAD_PAGE (ERR_PTR(-ENOENT))
133 static inline bool is_error_page(struct page *page)
138 #define KVM_REQUEST_MASK GENMASK(7,0)
139 #define KVM_REQUEST_NO_WAKEUP BIT(8)
140 #define KVM_REQUEST_WAIT BIT(9)
142 * Architecture-independent vcpu->requests bit members
143 * Bits 4-7 are reserved for more arch-independent bits.
145 #define KVM_REQ_TLB_FLUSH (0 | KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
146 #define KVM_REQ_MMU_RELOAD (1 | KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
147 #define KVM_REQ_PENDING_TIMER 2
148 #define KVM_REQ_UNHALT 3
149 #define KVM_REQUEST_ARCH_BASE 8
151 #define KVM_ARCH_REQ_FLAGS(nr, flags) ({ \
152 BUILD_BUG_ON((unsigned)(nr) >= (sizeof_field(struct kvm_vcpu, requests) * 8) - KVM_REQUEST_ARCH_BASE); \
153 (unsigned)(((nr) + KVM_REQUEST_ARCH_BASE) | (flags)); \
155 #define KVM_ARCH_REQ(nr) KVM_ARCH_REQ_FLAGS(nr, 0)
157 #define KVM_USERSPACE_IRQ_SOURCE_ID 0
158 #define KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID 1
160 extern struct mutex kvm_lock;
161 extern struct list_head vm_list;
163 struct kvm_io_range {
166 struct kvm_io_device *dev;
169 #define NR_IOBUS_DEVS 1000
174 struct kvm_io_range range[];
180 KVM_VIRTIO_CCW_NOTIFY_BUS,
185 int kvm_io_bus_write(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr,
186 int len, const void *val);
187 int kvm_io_bus_write_cookie(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx,
188 gpa_t addr, int len, const void *val, long cookie);
189 int kvm_io_bus_read(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr,
191 int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr,
192 int len, struct kvm_io_device *dev);
193 void kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx,
194 struct kvm_io_device *dev);
195 struct kvm_io_device *kvm_io_bus_get_dev(struct kvm *kvm, enum kvm_bus bus_idx,
198 #ifdef CONFIG_KVM_ASYNC_PF
199 struct kvm_async_pf {
200 struct work_struct work;
201 struct list_head link;
202 struct list_head queue;
203 struct kvm_vcpu *vcpu;
204 struct mm_struct *mm;
207 struct kvm_arch_async_pf arch;
211 void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu);
212 void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu);
213 int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gpa_t cr2_or_gpa,
214 unsigned long hva, struct kvm_arch_async_pf *arch);
215 int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu);
222 READING_SHADOW_PAGE_TABLES,
225 #define KVM_UNMAPPED_PAGE ((void *) 0x500 + POISON_POINTER_DELTA)
227 struct kvm_host_map {
229 * Only valid if the 'pfn' is managed by the host kernel (i.e. There is
230 * a 'struct page' for it. When using mem= kernel parameter some memory
231 * can be used as guest memory but they are not managed by host
233 * If 'pfn' is not managed by the host kernel, this field is
234 * initialized to KVM_UNMAPPED_PAGE.
243 * Used to check if the mapping is valid or not. Never use 'kvm_host_map'
244 * directly to check for that.
246 static inline bool kvm_vcpu_mapped(struct kvm_host_map *map)
252 * Sometimes a large or cross-page mmio needs to be broken up into separate
253 * exits for userspace servicing.
255 struct kvm_mmio_fragment {
263 #ifdef CONFIG_PREEMPT_NOTIFIERS
264 struct preempt_notifier preempt_notifier;
267 int vcpu_id; /* id given by userspace at creation */
268 int vcpu_idx; /* index in kvm->vcpus array */
272 unsigned long guest_debug;
275 struct list_head blocked_vcpu_list;
280 struct swait_queue_head wq;
281 struct pid __rcu *pid;
284 struct kvm_vcpu_stat stat;
285 unsigned int halt_poll_ns;
288 #ifdef CONFIG_HAS_IOMEM
290 int mmio_read_completed;
292 int mmio_cur_fragment;
293 int mmio_nr_fragments;
294 struct kvm_mmio_fragment mmio_fragments[KVM_MAX_MMIO_FRAGMENTS];
297 #ifdef CONFIG_KVM_ASYNC_PF
300 struct list_head queue;
301 struct list_head done;
306 #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT
308 * Cpu relax intercept or pause loop exit optimization
309 * in_spin_loop: set when a vcpu does a pause loop exit
310 * or cpu relax intercepted.
311 * dy_eligible: indicates whether vcpu is eligible for directed yield.
320 struct kvm_vcpu_arch arch;
321 struct dentry *debugfs_dentry;
324 static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu)
327 * The memory barrier ensures a previous write to vcpu->requests cannot
328 * be reordered with the read of vcpu->mode. It pairs with the general
329 * memory barrier following the write of vcpu->mode in VCPU RUN.
331 smp_mb__before_atomic();
332 return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE);
336 * Some of the bitops functions do not support too long bitmaps.
337 * This number must be determined not to exceed such limits.
339 #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1)
341 struct kvm_memory_slot {
343 unsigned long npages;
344 unsigned long *dirty_bitmap;
345 struct kvm_arch_memory_slot arch;
346 unsigned long userspace_addr;
351 static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot)
353 return ALIGN(memslot->npages, BITS_PER_LONG) / 8;
356 static inline unsigned long *kvm_second_dirty_bitmap(struct kvm_memory_slot *memslot)
358 unsigned long len = kvm_dirty_bitmap_bytes(memslot);
360 return memslot->dirty_bitmap + len / sizeof(*memslot->dirty_bitmap);
363 struct kvm_s390_adapter_int {
376 struct kvm_kernel_irq_routing_entry {
379 int (*set)(struct kvm_kernel_irq_routing_entry *e,
380 struct kvm *kvm, int irq_source_id, int level,
394 struct kvm_s390_adapter_int adapter;
395 struct kvm_hv_sint hv_sint;
397 struct hlist_node link;
400 #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING
401 struct kvm_irq_routing_table {
402 int chip[KVM_NR_IRQCHIPS][KVM_IRQCHIP_NUM_PINS];
405 * Array indexed by gsi. Each entry contains list of irq chips
406 * the gsi is connected to.
408 struct hlist_head map[0];
412 #ifndef KVM_PRIVATE_MEM_SLOTS
413 #define KVM_PRIVATE_MEM_SLOTS 0
416 #ifndef KVM_MEM_SLOTS_NUM
417 #define KVM_MEM_SLOTS_NUM (KVM_USER_MEM_SLOTS + KVM_PRIVATE_MEM_SLOTS)
420 #ifndef __KVM_VCPU_MULTIPLE_ADDRESS_SPACE
421 static inline int kvm_arch_vcpu_memslots_id(struct kvm_vcpu *vcpu)
429 * memslots are not sorted by id anymore, please use id_to_memslot()
430 * to get the memslot by its id.
432 struct kvm_memslots {
434 struct kvm_memory_slot memslots[KVM_MEM_SLOTS_NUM];
435 /* The mapping table from slot id to the index in memslots[]. */
436 short id_to_index[KVM_MEM_SLOTS_NUM];
443 struct mutex slots_lock;
444 struct mm_struct *mm; /* userspace tied to this vm */
445 struct kvm_memslots __rcu *memslots[KVM_ADDRESS_SPACE_NUM];
446 struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
449 * created_vcpus is protected by kvm->lock, and is incremented
450 * at the beginning of KVM_CREATE_VCPU. online_vcpus is only
451 * incremented after storing the kvm_vcpu pointer in vcpus,
452 * and is accessed atomically.
454 atomic_t online_vcpus;
456 int last_boosted_vcpu;
457 struct list_head vm_list;
459 struct kvm_io_bus __rcu *buses[KVM_NR_BUSES];
460 #ifdef CONFIG_HAVE_KVM_EVENTFD
463 struct list_head items;
464 struct list_head resampler_list;
465 struct mutex resampler_lock;
467 struct list_head ioeventfds;
469 struct kvm_vm_stat stat;
470 struct kvm_arch arch;
471 refcount_t users_count;
472 #ifdef CONFIG_KVM_MMIO
473 struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
474 spinlock_t ring_lock;
475 struct list_head coalesced_zones;
478 struct mutex irq_lock;
479 #ifdef CONFIG_HAVE_KVM_IRQCHIP
481 * Update side is protected by irq_lock.
483 struct kvm_irq_routing_table __rcu *irq_routing;
485 #ifdef CONFIG_HAVE_KVM_IRQFD
486 struct hlist_head irq_ack_notifier_list;
489 #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER)
490 struct mmu_notifier mmu_notifier;
491 unsigned long mmu_notifier_seq;
492 long mmu_notifier_count;
495 struct list_head devices;
496 bool manual_dirty_log_protect;
497 struct dentry *debugfs_dentry;
498 struct kvm_stat_data **debugfs_stat_data;
499 struct srcu_struct srcu;
500 struct srcu_struct irq_srcu;
504 #define kvm_err(fmt, ...) \
505 pr_err("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__)
506 #define kvm_info(fmt, ...) \
507 pr_info("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__)
508 #define kvm_debug(fmt, ...) \
509 pr_debug("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__)
510 #define kvm_debug_ratelimited(fmt, ...) \
511 pr_debug_ratelimited("kvm [%i]: " fmt, task_pid_nr(current), \
513 #define kvm_pr_unimpl(fmt, ...) \
514 pr_err_ratelimited("kvm [%i]: " fmt, \
515 task_tgid_nr(current), ## __VA_ARGS__)
517 /* The guest did something we don't support. */
518 #define vcpu_unimpl(vcpu, fmt, ...) \
519 kvm_pr_unimpl("vcpu%i, guest rIP: 0x%lx " fmt, \
520 (vcpu)->vcpu_id, kvm_rip_read(vcpu), ## __VA_ARGS__)
522 #define vcpu_debug(vcpu, fmt, ...) \
523 kvm_debug("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__)
524 #define vcpu_debug_ratelimited(vcpu, fmt, ...) \
525 kvm_debug_ratelimited("vcpu%i " fmt, (vcpu)->vcpu_id, \
527 #define vcpu_err(vcpu, fmt, ...) \
528 kvm_err("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__)
530 static inline struct kvm_io_bus *kvm_get_bus(struct kvm *kvm, enum kvm_bus idx)
532 return srcu_dereference_check(kvm->buses[idx], &kvm->srcu,
533 lockdep_is_held(&kvm->slots_lock) ||
534 !refcount_read(&kvm->users_count));
537 static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i)
539 int num_vcpus = atomic_read(&kvm->online_vcpus);
540 i = array_index_nospec(i, num_vcpus);
542 /* Pairs with smp_wmb() in kvm_vm_ioctl_create_vcpu. */
544 return kvm->vcpus[i];
547 #define kvm_for_each_vcpu(idx, vcpup, kvm) \
549 idx < atomic_read(&kvm->online_vcpus) && \
550 (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \
553 static inline struct kvm_vcpu *kvm_get_vcpu_by_id(struct kvm *kvm, int id)
555 struct kvm_vcpu *vcpu = NULL;
560 if (id < KVM_MAX_VCPUS)
561 vcpu = kvm_get_vcpu(kvm, id);
562 if (vcpu && vcpu->vcpu_id == id)
564 kvm_for_each_vcpu(i, vcpu, kvm)
565 if (vcpu->vcpu_id == id)
570 static inline int kvm_vcpu_get_idx(struct kvm_vcpu *vcpu)
572 return vcpu->vcpu_idx;
575 #define kvm_for_each_memslot(memslot, slots) \
576 for (memslot = &slots->memslots[0]; \
577 memslot < slots->memslots + KVM_MEM_SLOTS_NUM && memslot->npages;\
580 void kvm_vcpu_destroy(struct kvm_vcpu *vcpu);
582 void vcpu_load(struct kvm_vcpu *vcpu);
583 void vcpu_put(struct kvm_vcpu *vcpu);
585 #ifdef __KVM_HAVE_IOAPIC
586 void kvm_arch_post_irq_ack_notifier_list_update(struct kvm *kvm);
587 void kvm_arch_post_irq_routing_update(struct kvm *kvm);
589 static inline void kvm_arch_post_irq_ack_notifier_list_update(struct kvm *kvm)
592 static inline void kvm_arch_post_irq_routing_update(struct kvm *kvm)
597 #ifdef CONFIG_HAVE_KVM_IRQFD
598 int kvm_irqfd_init(void);
599 void kvm_irqfd_exit(void);
601 static inline int kvm_irqfd_init(void)
606 static inline void kvm_irqfd_exit(void)
610 int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align,
611 struct module *module);
614 void kvm_get_kvm(struct kvm *kvm);
615 void kvm_put_kvm(struct kvm *kvm);
616 void kvm_put_kvm_no_destroy(struct kvm *kvm);
618 static inline struct kvm_memslots *__kvm_memslots(struct kvm *kvm, int as_id)
620 as_id = array_index_nospec(as_id, KVM_ADDRESS_SPACE_NUM);
621 return srcu_dereference_check(kvm->memslots[as_id], &kvm->srcu,
622 lockdep_is_held(&kvm->slots_lock) ||
623 !refcount_read(&kvm->users_count));
626 static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm)
628 return __kvm_memslots(kvm, 0);
631 static inline struct kvm_memslots *kvm_vcpu_memslots(struct kvm_vcpu *vcpu)
633 int as_id = kvm_arch_vcpu_memslots_id(vcpu);
635 return __kvm_memslots(vcpu->kvm, as_id);
638 static inline struct kvm_memory_slot *
639 id_to_memslot(struct kvm_memslots *slots, int id)
641 int index = slots->id_to_index[id];
642 struct kvm_memory_slot *slot;
644 slot = &slots->memslots[index];
646 WARN_ON(slot->id != id);
651 * KVM_SET_USER_MEMORY_REGION ioctl allows the following operations:
652 * - create a new memory slot
653 * - delete an existing memory slot
654 * - modify an existing memory slot
655 * -- move it in the guest physical memory space
656 * -- just change its flags
658 * Since flags can be changed by some of these operations, the following
659 * differentiation is the best we can do for __kvm_set_memory_region():
668 int kvm_set_memory_region(struct kvm *kvm,
669 const struct kvm_userspace_memory_region *mem);
670 int __kvm_set_memory_region(struct kvm *kvm,
671 const struct kvm_userspace_memory_region *mem);
672 void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free,
673 struct kvm_memory_slot *dont);
674 int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot,
675 unsigned long npages);
676 void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen);
677 int kvm_arch_prepare_memory_region(struct kvm *kvm,
678 struct kvm_memory_slot *memslot,
679 const struct kvm_userspace_memory_region *mem,
680 enum kvm_mr_change change);
681 void kvm_arch_commit_memory_region(struct kvm *kvm,
682 const struct kvm_userspace_memory_region *mem,
683 const struct kvm_memory_slot *old,
684 const struct kvm_memory_slot *new,
685 enum kvm_mr_change change);
686 bool kvm_largepages_enabled(void);
687 void kvm_disable_largepages(void);
688 /* flush all memory translations */
689 void kvm_arch_flush_shadow_all(struct kvm *kvm);
690 /* flush memory translations pointing to 'slot' */
691 void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
692 struct kvm_memory_slot *slot);
694 int gfn_to_page_many_atomic(struct kvm_memory_slot *slot, gfn_t gfn,
695 struct page **pages, int nr_pages);
697 struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn);
698 unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn);
699 unsigned long gfn_to_hva_prot(struct kvm *kvm, gfn_t gfn, bool *writable);
700 unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn);
701 unsigned long gfn_to_hva_memslot_prot(struct kvm_memory_slot *slot, gfn_t gfn,
703 void kvm_release_page_clean(struct page *page);
704 void kvm_release_page_dirty(struct page *page);
705 void kvm_set_page_accessed(struct page *page);
707 kvm_pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn);
708 kvm_pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn);
709 kvm_pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault,
711 kvm_pfn_t gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn);
712 kvm_pfn_t gfn_to_pfn_memslot_atomic(struct kvm_memory_slot *slot, gfn_t gfn);
713 kvm_pfn_t __gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn,
714 bool atomic, bool *async, bool write_fault,
717 void kvm_release_pfn_clean(kvm_pfn_t pfn);
718 void kvm_release_pfn_dirty(kvm_pfn_t pfn);
719 void kvm_set_pfn_dirty(kvm_pfn_t pfn);
720 void kvm_set_pfn_accessed(kvm_pfn_t pfn);
721 void kvm_get_pfn(kvm_pfn_t pfn);
723 void kvm_release_pfn(kvm_pfn_t pfn, bool dirty, struct gfn_to_pfn_cache *cache);
724 int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset,
726 int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len);
727 int kvm_read_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
728 void *data, unsigned long len);
729 int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data,
730 int offset, int len);
731 int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data,
733 int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
734 void *data, unsigned long len);
735 int kvm_write_guest_offset_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
736 void *data, unsigned int offset,
738 int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
739 gpa_t gpa, unsigned long len);
741 #define __kvm_put_guest(kvm, gfn, offset, value, type) \
743 unsigned long __addr = gfn_to_hva(kvm, gfn); \
744 type __user *__uaddr = (type __user *)(__addr + offset); \
745 int __ret = -EFAULT; \
747 if (!kvm_is_error_hva(__addr)) \
748 __ret = put_user(value, __uaddr); \
750 mark_page_dirty(kvm, gfn); \
754 #define kvm_put_guest(kvm, gpa, value, type) \
757 struct kvm *__kvm = kvm; \
758 __kvm_put_guest(__kvm, __gpa >> PAGE_SHIFT, \
759 offset_in_page(__gpa), (value), type); \
762 int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
763 int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
764 struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
765 bool kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
766 unsigned long kvm_host_page_size(struct kvm_vcpu *vcpu, gfn_t gfn);
767 void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
769 struct kvm_memslots *kvm_vcpu_memslots(struct kvm_vcpu *vcpu);
770 struct kvm_memory_slot *kvm_vcpu_gfn_to_memslot(struct kvm_vcpu *vcpu, gfn_t gfn);
771 kvm_pfn_t kvm_vcpu_gfn_to_pfn_atomic(struct kvm_vcpu *vcpu, gfn_t gfn);
772 kvm_pfn_t kvm_vcpu_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn);
773 int kvm_vcpu_map(struct kvm_vcpu *vcpu, gpa_t gpa, struct kvm_host_map *map);
774 int kvm_map_gfn(struct kvm_vcpu *vcpu, gfn_t gfn, struct kvm_host_map *map,
775 struct gfn_to_pfn_cache *cache, bool atomic);
776 struct page *kvm_vcpu_gfn_to_page(struct kvm_vcpu *vcpu, gfn_t gfn);
777 void kvm_vcpu_unmap(struct kvm_vcpu *vcpu, struct kvm_host_map *map, bool dirty);
778 int kvm_unmap_gfn(struct kvm_vcpu *vcpu, struct kvm_host_map *map,
779 struct gfn_to_pfn_cache *cache, bool dirty, bool atomic);
780 unsigned long kvm_vcpu_gfn_to_hva(struct kvm_vcpu *vcpu, gfn_t gfn);
781 unsigned long kvm_vcpu_gfn_to_hva_prot(struct kvm_vcpu *vcpu, gfn_t gfn, bool *writable);
782 int kvm_vcpu_read_guest_page(struct kvm_vcpu *vcpu, gfn_t gfn, void *data, int offset,
784 int kvm_vcpu_read_guest_atomic(struct kvm_vcpu *vcpu, gpa_t gpa, void *data,
786 int kvm_vcpu_read_guest(struct kvm_vcpu *vcpu, gpa_t gpa, void *data,
788 int kvm_vcpu_write_guest_page(struct kvm_vcpu *vcpu, gfn_t gfn, const void *data,
789 int offset, int len);
790 int kvm_vcpu_write_guest(struct kvm_vcpu *vcpu, gpa_t gpa, const void *data,
792 void kvm_vcpu_mark_page_dirty(struct kvm_vcpu *vcpu, gfn_t gfn);
794 void kvm_sigset_activate(struct kvm_vcpu *vcpu);
795 void kvm_sigset_deactivate(struct kvm_vcpu *vcpu);
797 void kvm_vcpu_block(struct kvm_vcpu *vcpu);
798 void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu);
799 void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu);
800 bool kvm_vcpu_wake_up(struct kvm_vcpu *vcpu);
801 void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
802 int kvm_vcpu_yield_to(struct kvm_vcpu *target);
803 void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu, bool usermode_vcpu_not_eligible);
805 void kvm_flush_remote_tlbs(struct kvm *kvm);
806 void kvm_reload_remote_mmus(struct kvm *kvm);
808 bool kvm_make_vcpus_request_mask(struct kvm *kvm, unsigned int req,
809 unsigned long *vcpu_bitmap, cpumask_var_t tmp);
810 bool kvm_make_all_cpus_request(struct kvm *kvm, unsigned int req);
811 bool kvm_make_cpus_request_mask(struct kvm *kvm, unsigned int req,
812 unsigned long *vcpu_bitmap);
814 long kvm_arch_dev_ioctl(struct file *filp,
815 unsigned int ioctl, unsigned long arg);
816 long kvm_arch_vcpu_ioctl(struct file *filp,
817 unsigned int ioctl, unsigned long arg);
818 vm_fault_t kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf);
820 int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext);
822 int kvm_get_dirty_log(struct kvm *kvm,
823 struct kvm_dirty_log *log, int *is_dirty);
825 int kvm_get_dirty_log_protect(struct kvm *kvm,
826 struct kvm_dirty_log *log, bool *flush);
827 int kvm_clear_dirty_log_protect(struct kvm *kvm,
828 struct kvm_clear_dirty_log *log, bool *flush);
830 void kvm_arch_mmu_enable_log_dirty_pt_masked(struct kvm *kvm,
831 struct kvm_memory_slot *slot,
835 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
836 struct kvm_dirty_log *log);
837 int kvm_vm_ioctl_clear_dirty_log(struct kvm *kvm,
838 struct kvm_clear_dirty_log *log);
840 int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_level,
842 int kvm_vm_ioctl_enable_cap(struct kvm *kvm,
843 struct kvm_enable_cap *cap);
844 long kvm_arch_vm_ioctl(struct file *filp,
845 unsigned int ioctl, unsigned long arg);
847 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
848 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
850 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
851 struct kvm_translation *tr);
853 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
854 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
855 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
856 struct kvm_sregs *sregs);
857 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
858 struct kvm_sregs *sregs);
859 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
860 struct kvm_mp_state *mp_state);
861 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
862 struct kvm_mp_state *mp_state);
863 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
864 struct kvm_guest_debug *dbg);
865 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run);
867 int kvm_arch_init(void *opaque);
868 void kvm_arch_exit(void);
870 void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu);
872 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
873 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
874 int kvm_arch_vcpu_precreate(struct kvm *kvm, unsigned int id);
875 int kvm_arch_vcpu_create(struct kvm_vcpu *vcpu);
876 void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu);
877 void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu);
879 #ifdef __KVM_HAVE_ARCH_VCPU_DEBUGFS
880 void kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu);
883 int kvm_arch_hardware_enable(void);
884 void kvm_arch_hardware_disable(void);
885 int kvm_arch_hardware_setup(void);
886 void kvm_arch_hardware_unsetup(void);
887 int kvm_arch_check_processor_compat(void);
888 int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu);
889 bool kvm_arch_vcpu_in_kernel(struct kvm_vcpu *vcpu);
890 int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu);
891 bool kvm_arch_dy_runnable(struct kvm_vcpu *vcpu);
892 int kvm_arch_post_init_vm(struct kvm *kvm);
893 void kvm_arch_pre_destroy_vm(struct kvm *kvm);
895 #ifndef __KVM_HAVE_ARCH_VM_ALLOC
897 * All architectures that want to use vzalloc currently also
898 * need their own kvm_arch_alloc_vm implementation.
900 static inline struct kvm *kvm_arch_alloc_vm(void)
902 return kzalloc(sizeof(struct kvm), GFP_KERNEL);
905 static inline void kvm_arch_free_vm(struct kvm *kvm)
911 #ifndef __KVM_HAVE_ARCH_FLUSH_REMOTE_TLB
912 static inline int kvm_arch_flush_remote_tlb(struct kvm *kvm)
918 #ifdef __KVM_HAVE_ARCH_NONCOHERENT_DMA
919 void kvm_arch_register_noncoherent_dma(struct kvm *kvm);
920 void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm);
921 bool kvm_arch_has_noncoherent_dma(struct kvm *kvm);
923 static inline void kvm_arch_register_noncoherent_dma(struct kvm *kvm)
927 static inline void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm)
931 static inline bool kvm_arch_has_noncoherent_dma(struct kvm *kvm)
936 #ifdef __KVM_HAVE_ARCH_ASSIGNED_DEVICE
937 void kvm_arch_start_assignment(struct kvm *kvm);
938 void kvm_arch_end_assignment(struct kvm *kvm);
939 bool kvm_arch_has_assigned_device(struct kvm *kvm);
941 static inline void kvm_arch_start_assignment(struct kvm *kvm)
945 static inline void kvm_arch_end_assignment(struct kvm *kvm)
949 static inline bool kvm_arch_has_assigned_device(struct kvm *kvm)
955 static inline struct swait_queue_head *kvm_arch_vcpu_wq(struct kvm_vcpu *vcpu)
957 #ifdef __KVM_HAVE_ARCH_WQP
958 return vcpu->arch.wqp;
964 #ifdef __KVM_HAVE_ARCH_INTC_INITIALIZED
966 * returns true if the virtual interrupt controller is initialized and
967 * ready to accept virtual IRQ. On some architectures the virtual interrupt
968 * controller is dynamically instantiated and this is not always true.
970 bool kvm_arch_intc_initialized(struct kvm *kvm);
972 static inline bool kvm_arch_intc_initialized(struct kvm *kvm)
978 int kvm_arch_init_vm(struct kvm *kvm, unsigned long type);
979 void kvm_arch_destroy_vm(struct kvm *kvm);
980 void kvm_arch_sync_events(struct kvm *kvm);
982 int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu);
984 bool kvm_is_reserved_pfn(kvm_pfn_t pfn);
985 bool kvm_is_zone_device_pfn(kvm_pfn_t pfn);
986 bool kvm_is_transparent_hugepage(kvm_pfn_t pfn);
988 struct kvm_irq_ack_notifier {
989 struct hlist_node link;
991 void (*irq_acked)(struct kvm_irq_ack_notifier *kian);
994 int kvm_irq_map_gsi(struct kvm *kvm,
995 struct kvm_kernel_irq_routing_entry *entries, int gsi);
996 int kvm_irq_map_chip_pin(struct kvm *kvm, unsigned irqchip, unsigned pin);
998 int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level,
1000 int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm,
1001 int irq_source_id, int level, bool line_status);
1002 int kvm_arch_set_irq_inatomic(struct kvm_kernel_irq_routing_entry *e,
1003 struct kvm *kvm, int irq_source_id,
1004 int level, bool line_status);
1005 bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin);
1006 void kvm_notify_acked_gsi(struct kvm *kvm, int gsi);
1007 void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin);
1008 void kvm_register_irq_ack_notifier(struct kvm *kvm,
1009 struct kvm_irq_ack_notifier *kian);
1010 void kvm_unregister_irq_ack_notifier(struct kvm *kvm,
1011 struct kvm_irq_ack_notifier *kian);
1012 int kvm_request_irq_source_id(struct kvm *kvm);
1013 void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id);
1014 bool kvm_arch_irqfd_allowed(struct kvm *kvm, struct kvm_irqfd *args);
1017 * search_memslots() and __gfn_to_memslot() are here because they are
1018 * used in non-modular code in arch/powerpc/kvm/book3s_hv_rm_mmu.c.
1019 * gfn_to_memslot() itself isn't here as an inline because that would
1020 * bloat other code too much.
1022 static inline struct kvm_memory_slot *
1023 search_memslots(struct kvm_memslots *slots, gfn_t gfn)
1025 int start = 0, end = slots->used_slots;
1026 int slot = atomic_read(&slots->lru_slot);
1027 struct kvm_memory_slot *memslots = slots->memslots;
1029 if (gfn >= memslots[slot].base_gfn &&
1030 gfn < memslots[slot].base_gfn + memslots[slot].npages)
1031 return &memslots[slot];
1033 while (start < end) {
1034 slot = start + (end - start) / 2;
1036 if (gfn >= memslots[slot].base_gfn)
1042 if (gfn >= memslots[start].base_gfn &&
1043 gfn < memslots[start].base_gfn + memslots[start].npages) {
1044 atomic_set(&slots->lru_slot, start);
1045 return &memslots[start];
1051 static inline struct kvm_memory_slot *
1052 __gfn_to_memslot(struct kvm_memslots *slots, gfn_t gfn)
1054 return search_memslots(slots, gfn);
1057 static inline unsigned long
1058 __gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn)
1060 return slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE;
1063 static inline int memslot_id(struct kvm *kvm, gfn_t gfn)
1065 return gfn_to_memslot(kvm, gfn)->id;
1069 hva_to_gfn_memslot(unsigned long hva, struct kvm_memory_slot *slot)
1071 gfn_t gfn_offset = (hva - slot->userspace_addr) >> PAGE_SHIFT;
1073 return slot->base_gfn + gfn_offset;
1076 static inline gpa_t gfn_to_gpa(gfn_t gfn)
1078 return (gpa_t)gfn << PAGE_SHIFT;
1081 static inline gfn_t gpa_to_gfn(gpa_t gpa)
1083 return (gfn_t)(gpa >> PAGE_SHIFT);
1086 static inline hpa_t pfn_to_hpa(kvm_pfn_t pfn)
1088 return (hpa_t)pfn << PAGE_SHIFT;
1091 static inline struct page *kvm_vcpu_gpa_to_page(struct kvm_vcpu *vcpu,
1094 return kvm_vcpu_gfn_to_page(vcpu, gpa_to_gfn(gpa));
1097 static inline bool kvm_is_error_gpa(struct kvm *kvm, gpa_t gpa)
1099 unsigned long hva = gfn_to_hva(kvm, gpa_to_gfn(gpa));
1101 return kvm_is_error_hva(hva);
1104 enum kvm_stat_kind {
1109 struct kvm_stat_data {
1111 struct kvm_stats_debugfs_item *dbgfs_item;
1114 struct kvm_stats_debugfs_item {
1117 enum kvm_stat_kind kind;
1121 #define KVM_DBGFS_GET_MODE(dbgfs_item) \
1122 ((dbgfs_item)->mode ? (dbgfs_item)->mode : 0644)
1124 extern struct kvm_stats_debugfs_item debugfs_entries[];
1125 extern struct dentry *kvm_debugfs_dir;
1127 #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER)
1128 static inline int mmu_notifier_retry(struct kvm *kvm, unsigned long mmu_seq)
1130 if (unlikely(kvm->mmu_notifier_count))
1133 * Ensure the read of mmu_notifier_count happens before the read
1134 * of mmu_notifier_seq. This interacts with the smp_wmb() in
1135 * mmu_notifier_invalidate_range_end to make sure that the caller
1136 * either sees the old (non-zero) value of mmu_notifier_count or
1137 * the new (incremented) value of mmu_notifier_seq.
1138 * PowerPC Book3s HV KVM calls this under a per-page lock
1139 * rather than under kvm->mmu_lock, for scalability, so
1140 * can't rely on kvm->mmu_lock to keep things ordered.
1143 if (kvm->mmu_notifier_seq != mmu_seq)
1149 #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING
1151 #define KVM_MAX_IRQ_ROUTES 4096 /* might need extension/rework in the future */
1153 bool kvm_arch_can_set_irq_routing(struct kvm *kvm);
1154 int kvm_set_irq_routing(struct kvm *kvm,
1155 const struct kvm_irq_routing_entry *entries,
1158 int kvm_set_routing_entry(struct kvm *kvm,
1159 struct kvm_kernel_irq_routing_entry *e,
1160 const struct kvm_irq_routing_entry *ue);
1161 void kvm_free_irq_routing(struct kvm *kvm);
1165 static inline void kvm_free_irq_routing(struct kvm *kvm) {}
1169 int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi);
1171 #ifdef CONFIG_HAVE_KVM_EVENTFD
1173 void kvm_eventfd_init(struct kvm *kvm);
1174 int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args);
1176 #ifdef CONFIG_HAVE_KVM_IRQFD
1177 int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args);
1178 void kvm_irqfd_release(struct kvm *kvm);
1179 void kvm_irq_routing_update(struct kvm *);
1181 static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args)
1186 static inline void kvm_irqfd_release(struct kvm *kvm) {}
1191 static inline void kvm_eventfd_init(struct kvm *kvm) {}
1193 static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args)
1198 static inline void kvm_irqfd_release(struct kvm *kvm) {}
1200 #ifdef CONFIG_HAVE_KVM_IRQCHIP
1201 static inline void kvm_irq_routing_update(struct kvm *kvm)
1206 static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
1211 #endif /* CONFIG_HAVE_KVM_EVENTFD */
1213 void kvm_arch_irq_routing_update(struct kvm *kvm);
1215 static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu)
1218 * Ensure the rest of the request is published to kvm_check_request's
1219 * caller. Paired with the smp_mb__after_atomic in kvm_check_request.
1222 set_bit(req & KVM_REQUEST_MASK, (void *)&vcpu->requests);
1225 static inline bool kvm_request_pending(struct kvm_vcpu *vcpu)
1227 return READ_ONCE(vcpu->requests);
1230 static inline bool kvm_test_request(int req, struct kvm_vcpu *vcpu)
1232 return test_bit(req & KVM_REQUEST_MASK, (void *)&vcpu->requests);
1235 static inline void kvm_clear_request(int req, struct kvm_vcpu *vcpu)
1237 clear_bit(req & KVM_REQUEST_MASK, (void *)&vcpu->requests);
1240 static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu)
1242 if (kvm_test_request(req, vcpu)) {
1243 kvm_clear_request(req, vcpu);
1246 * Ensure the rest of the request is visible to kvm_check_request's
1247 * caller. Paired with the smp_wmb in kvm_make_request.
1249 smp_mb__after_atomic();
1256 extern bool kvm_rebooting;
1258 extern unsigned int halt_poll_ns;
1259 extern unsigned int halt_poll_ns_grow;
1260 extern unsigned int halt_poll_ns_grow_start;
1261 extern unsigned int halt_poll_ns_shrink;
1264 const struct kvm_device_ops *ops;
1267 struct list_head vm_node;
1270 /* create, destroy, and name are mandatory */
1271 struct kvm_device_ops {
1275 * create is called holding kvm->lock and any operations not suitable
1276 * to do while holding the lock should be deferred to init (see
1279 int (*create)(struct kvm_device *dev, u32 type);
1282 * init is called after create if create is successful and is called
1283 * outside of holding kvm->lock.
1285 void (*init)(struct kvm_device *dev);
1288 * Destroy is responsible for freeing dev.
1290 * Destroy may be called before or after destructors are called
1291 * on emulated I/O regions, depending on whether a reference is
1292 * held by a vcpu or other kvm component that gets destroyed
1293 * after the emulated I/O.
1295 void (*destroy)(struct kvm_device *dev);
1298 * Release is an alternative method to free the device. It is
1299 * called when the device file descriptor is closed. Once
1300 * release is called, the destroy method will not be called
1301 * anymore as the device is removed from the device list of
1302 * the VM. kvm->lock is held.
1304 void (*release)(struct kvm_device *dev);
1306 int (*set_attr)(struct kvm_device *dev, struct kvm_device_attr *attr);
1307 int (*get_attr)(struct kvm_device *dev, struct kvm_device_attr *attr);
1308 int (*has_attr)(struct kvm_device *dev, struct kvm_device_attr *attr);
1309 long (*ioctl)(struct kvm_device *dev, unsigned int ioctl,
1311 int (*mmap)(struct kvm_device *dev, struct vm_area_struct *vma);
1314 void kvm_device_get(struct kvm_device *dev);
1315 void kvm_device_put(struct kvm_device *dev);
1316 struct kvm_device *kvm_device_from_filp(struct file *filp);
1317 int kvm_register_device_ops(const struct kvm_device_ops *ops, u32 type);
1318 void kvm_unregister_device_ops(u32 type);
1320 extern struct kvm_device_ops kvm_mpic_ops;
1321 extern struct kvm_device_ops kvm_arm_vgic_v2_ops;
1322 extern struct kvm_device_ops kvm_arm_vgic_v3_ops;
1324 #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT
1326 static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val)
1328 vcpu->spin_loop.in_spin_loop = val;
1330 static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val)
1332 vcpu->spin_loop.dy_eligible = val;
1335 #else /* !CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */
1337 static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val)
1341 static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val)
1344 #endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */
1346 struct kvm_vcpu *kvm_get_running_vcpu(void);
1347 struct kvm_vcpu * __percpu *kvm_get_running_vcpus(void);
1349 #ifdef CONFIG_HAVE_KVM_IRQ_BYPASS
1350 bool kvm_arch_has_irq_bypass(void);
1351 int kvm_arch_irq_bypass_add_producer(struct irq_bypass_consumer *,
1352 struct irq_bypass_producer *);
1353 void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer *,
1354 struct irq_bypass_producer *);
1355 void kvm_arch_irq_bypass_stop(struct irq_bypass_consumer *);
1356 void kvm_arch_irq_bypass_start(struct irq_bypass_consumer *);
1357 int kvm_arch_update_irqfd_routing(struct kvm *kvm, unsigned int host_irq,
1358 uint32_t guest_irq, bool set);
1359 #endif /* CONFIG_HAVE_KVM_IRQ_BYPASS */
1361 #ifdef CONFIG_HAVE_KVM_INVALID_WAKEUPS
1362 /* If we wakeup during the poll time, was it a sucessful poll? */
1363 static inline bool vcpu_valid_wakeup(struct kvm_vcpu *vcpu)
1365 return vcpu->valid_wakeup;
1369 static inline bool vcpu_valid_wakeup(struct kvm_vcpu *vcpu)
1373 #endif /* CONFIG_HAVE_KVM_INVALID_WAKEUPS */
1375 #ifdef CONFIG_HAVE_KVM_NO_POLL
1376 /* Callback that tells if we must not poll */
1377 bool kvm_arch_no_poll(struct kvm_vcpu *vcpu);
1379 static inline bool kvm_arch_no_poll(struct kvm_vcpu *vcpu)
1383 #endif /* CONFIG_HAVE_KVM_NO_POLL */
1385 #ifdef CONFIG_HAVE_KVM_VCPU_ASYNC_IOCTL
1386 long kvm_arch_vcpu_async_ioctl(struct file *filp,
1387 unsigned int ioctl, unsigned long arg);
1389 static inline long kvm_arch_vcpu_async_ioctl(struct file *filp,
1393 return -ENOIOCTLCMD;
1395 #endif /* CONFIG_HAVE_KVM_VCPU_ASYNC_IOCTL */
1397 int kvm_arch_mmu_notifier_invalidate_range(struct kvm *kvm,
1398 unsigned long start, unsigned long end, bool blockable);
1400 #ifdef CONFIG_HAVE_KVM_VCPU_RUN_PID_CHANGE
1401 int kvm_arch_vcpu_run_pid_change(struct kvm_vcpu *vcpu);
1403 static inline int kvm_arch_vcpu_run_pid_change(struct kvm_vcpu *vcpu)
1407 #endif /* CONFIG_HAVE_KVM_VCPU_RUN_PID_CHANGE */
1409 typedef int (*kvm_vm_thread_fn_t)(struct kvm *kvm, uintptr_t data);
1411 int kvm_vm_create_worker_thread(struct kvm *kvm, kvm_vm_thread_fn_t thread_fn,
1412 uintptr_t data, const char *name,
1413 struct task_struct **thread_ptr);