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 kmem_cache *kvm_vcpu_cache;
162 extern struct mutex kvm_lock;
163 extern struct list_head vm_list;
165 struct kvm_io_range {
168 struct kvm_io_device *dev;
171 #define NR_IOBUS_DEVS 1000
176 struct kvm_io_range range[];
182 KVM_VIRTIO_CCW_NOTIFY_BUS,
187 int kvm_io_bus_write(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr,
188 int len, const void *val);
189 int kvm_io_bus_write_cookie(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx,
190 gpa_t addr, int len, const void *val, long cookie);
191 int kvm_io_bus_read(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr,
193 int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr,
194 int len, struct kvm_io_device *dev);
195 void kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx,
196 struct kvm_io_device *dev);
197 struct kvm_io_device *kvm_io_bus_get_dev(struct kvm *kvm, enum kvm_bus bus_idx,
200 #ifdef CONFIG_KVM_ASYNC_PF
201 struct kvm_async_pf {
202 struct work_struct work;
203 struct list_head link;
204 struct list_head queue;
205 struct kvm_vcpu *vcpu;
206 struct mm_struct *mm;
209 struct kvm_arch_async_pf arch;
213 void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu);
214 void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu);
215 int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, unsigned long hva,
216 struct kvm_arch_async_pf *arch);
217 int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu);
224 READING_SHADOW_PAGE_TABLES,
227 #define KVM_UNMAPPED_PAGE ((void *) 0x500 + POISON_POINTER_DELTA)
229 struct kvm_host_map {
231 * Only valid if the 'pfn' is managed by the host kernel (i.e. There is
232 * a 'struct page' for it. When using mem= kernel parameter some memory
233 * can be used as guest memory but they are not managed by host
235 * If 'pfn' is not managed by the host kernel, this field is
236 * initialized to KVM_UNMAPPED_PAGE.
245 * Used to check if the mapping is valid or not. Never use 'kvm_host_map'
246 * directly to check for that.
248 static inline bool kvm_vcpu_mapped(struct kvm_host_map *map)
254 * Sometimes a large or cross-page mmio needs to be broken up into separate
255 * exits for userspace servicing.
257 struct kvm_mmio_fragment {
265 #ifdef CONFIG_PREEMPT_NOTIFIERS
266 struct preempt_notifier preempt_notifier;
269 int vcpu_id; /* id given by userspace at creation */
270 int vcpu_idx; /* index in kvm->vcpus array */
274 unsigned long guest_debug;
277 struct list_head blocked_vcpu_list;
282 struct swait_queue_head wq;
283 struct pid __rcu *pid;
286 struct kvm_vcpu_stat stat;
287 unsigned int halt_poll_ns;
290 #ifdef CONFIG_HAS_IOMEM
292 int mmio_read_completed;
294 int mmio_cur_fragment;
295 int mmio_nr_fragments;
296 struct kvm_mmio_fragment mmio_fragments[KVM_MAX_MMIO_FRAGMENTS];
299 #ifdef CONFIG_KVM_ASYNC_PF
302 struct list_head queue;
303 struct list_head done;
308 #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT
310 * Cpu relax intercept or pause loop exit optimization
311 * in_spin_loop: set when a vcpu does a pause loop exit
312 * or cpu relax intercepted.
313 * dy_eligible: indicates whether vcpu is eligible for directed yield.
322 struct kvm_vcpu_arch arch;
323 struct dentry *debugfs_dentry;
326 static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu)
329 * The memory barrier ensures a previous write to vcpu->requests cannot
330 * be reordered with the read of vcpu->mode. It pairs with the general
331 * memory barrier following the write of vcpu->mode in VCPU RUN.
333 smp_mb__before_atomic();
334 return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE);
338 * Some of the bitops functions do not support too long bitmaps.
339 * This number must be determined not to exceed such limits.
341 #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1)
343 struct kvm_memory_slot {
345 unsigned long npages;
346 unsigned long *dirty_bitmap;
347 struct kvm_arch_memory_slot arch;
348 unsigned long userspace_addr;
353 static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot)
355 return ALIGN(memslot->npages, BITS_PER_LONG) / 8;
358 static inline unsigned long *kvm_second_dirty_bitmap(struct kvm_memory_slot *memslot)
360 unsigned long len = kvm_dirty_bitmap_bytes(memslot);
362 return memslot->dirty_bitmap + len / sizeof(*memslot->dirty_bitmap);
365 struct kvm_s390_adapter_int {
378 struct kvm_kernel_irq_routing_entry {
381 int (*set)(struct kvm_kernel_irq_routing_entry *e,
382 struct kvm *kvm, int irq_source_id, int level,
396 struct kvm_s390_adapter_int adapter;
397 struct kvm_hv_sint hv_sint;
399 struct hlist_node link;
402 #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING
403 struct kvm_irq_routing_table {
404 int chip[KVM_NR_IRQCHIPS][KVM_IRQCHIP_NUM_PINS];
407 * Array indexed by gsi. Each entry contains list of irq chips
408 * the gsi is connected to.
410 struct hlist_head map[0];
414 #ifndef KVM_PRIVATE_MEM_SLOTS
415 #define KVM_PRIVATE_MEM_SLOTS 0
418 #ifndef KVM_MEM_SLOTS_NUM
419 #define KVM_MEM_SLOTS_NUM (KVM_USER_MEM_SLOTS + KVM_PRIVATE_MEM_SLOTS)
422 #ifndef __KVM_VCPU_MULTIPLE_ADDRESS_SPACE
423 static inline int kvm_arch_vcpu_memslots_id(struct kvm_vcpu *vcpu)
431 * memslots are not sorted by id anymore, please use id_to_memslot()
432 * to get the memslot by its id.
434 struct kvm_memslots {
436 struct kvm_memory_slot memslots[KVM_MEM_SLOTS_NUM];
437 /* The mapping table from slot id to the index in memslots[]. */
438 short id_to_index[KVM_MEM_SLOTS_NUM];
445 struct mutex slots_lock;
446 struct mm_struct *mm; /* userspace tied to this vm */
447 struct kvm_memslots __rcu *memslots[KVM_ADDRESS_SPACE_NUM];
448 struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
451 * created_vcpus is protected by kvm->lock, and is incremented
452 * at the beginning of KVM_CREATE_VCPU. online_vcpus is only
453 * incremented after storing the kvm_vcpu pointer in vcpus,
454 * and is accessed atomically.
456 atomic_t online_vcpus;
458 int last_boosted_vcpu;
459 struct list_head vm_list;
461 struct kvm_io_bus __rcu *buses[KVM_NR_BUSES];
462 #ifdef CONFIG_HAVE_KVM_EVENTFD
465 struct list_head items;
466 struct list_head resampler_list;
467 struct mutex resampler_lock;
469 struct list_head ioeventfds;
471 struct kvm_vm_stat stat;
472 struct kvm_arch arch;
473 refcount_t users_count;
474 #ifdef CONFIG_KVM_MMIO
475 struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
476 spinlock_t ring_lock;
477 struct list_head coalesced_zones;
480 struct mutex irq_lock;
481 #ifdef CONFIG_HAVE_KVM_IRQCHIP
483 * Update side is protected by irq_lock.
485 struct kvm_irq_routing_table __rcu *irq_routing;
487 #ifdef CONFIG_HAVE_KVM_IRQFD
488 struct hlist_head irq_ack_notifier_list;
491 #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER)
492 struct mmu_notifier mmu_notifier;
493 unsigned long mmu_notifier_seq;
494 long mmu_notifier_count;
497 struct list_head devices;
498 bool manual_dirty_log_protect;
499 struct dentry *debugfs_dentry;
500 struct kvm_stat_data **debugfs_stat_data;
501 struct srcu_struct srcu;
502 struct srcu_struct irq_srcu;
506 #define kvm_err(fmt, ...) \
507 pr_err("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__)
508 #define kvm_info(fmt, ...) \
509 pr_info("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__)
510 #define kvm_debug(fmt, ...) \
511 pr_debug("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__)
512 #define kvm_debug_ratelimited(fmt, ...) \
513 pr_debug_ratelimited("kvm [%i]: " fmt, task_pid_nr(current), \
515 #define kvm_pr_unimpl(fmt, ...) \
516 pr_err_ratelimited("kvm [%i]: " fmt, \
517 task_tgid_nr(current), ## __VA_ARGS__)
519 /* The guest did something we don't support. */
520 #define vcpu_unimpl(vcpu, fmt, ...) \
521 kvm_pr_unimpl("vcpu%i, guest rIP: 0x%lx " fmt, \
522 (vcpu)->vcpu_id, kvm_rip_read(vcpu), ## __VA_ARGS__)
524 #define vcpu_debug(vcpu, fmt, ...) \
525 kvm_debug("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__)
526 #define vcpu_debug_ratelimited(vcpu, fmt, ...) \
527 kvm_debug_ratelimited("vcpu%i " fmt, (vcpu)->vcpu_id, \
529 #define vcpu_err(vcpu, fmt, ...) \
530 kvm_err("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__)
532 static inline struct kvm_io_bus *kvm_get_bus(struct kvm *kvm, enum kvm_bus idx)
534 return srcu_dereference_check(kvm->buses[idx], &kvm->srcu,
535 lockdep_is_held(&kvm->slots_lock) ||
536 !refcount_read(&kvm->users_count));
539 static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i)
541 int num_vcpus = atomic_read(&kvm->online_vcpus);
542 i = array_index_nospec(i, num_vcpus);
544 /* Pairs with smp_wmb() in kvm_vm_ioctl_create_vcpu. */
546 return kvm->vcpus[i];
549 #define kvm_for_each_vcpu(idx, vcpup, kvm) \
551 idx < atomic_read(&kvm->online_vcpus) && \
552 (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \
555 static inline struct kvm_vcpu *kvm_get_vcpu_by_id(struct kvm *kvm, int id)
557 struct kvm_vcpu *vcpu = NULL;
562 if (id < KVM_MAX_VCPUS)
563 vcpu = kvm_get_vcpu(kvm, id);
564 if (vcpu && vcpu->vcpu_id == id)
566 kvm_for_each_vcpu(i, vcpu, kvm)
567 if (vcpu->vcpu_id == id)
572 static inline int kvm_vcpu_get_idx(struct kvm_vcpu *vcpu)
574 return vcpu->vcpu_idx;
577 #define kvm_for_each_memslot(memslot, slots) \
578 for (memslot = &slots->memslots[0]; \
579 memslot < slots->memslots + KVM_MEM_SLOTS_NUM && memslot->npages;\
582 int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id);
583 void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
585 void vcpu_load(struct kvm_vcpu *vcpu);
586 void vcpu_put(struct kvm_vcpu *vcpu);
588 #ifdef __KVM_HAVE_IOAPIC
589 void kvm_arch_post_irq_ack_notifier_list_update(struct kvm *kvm);
590 void kvm_arch_post_irq_routing_update(struct kvm *kvm);
592 static inline void kvm_arch_post_irq_ack_notifier_list_update(struct kvm *kvm)
595 static inline void kvm_arch_post_irq_routing_update(struct kvm *kvm)
600 #ifdef CONFIG_HAVE_KVM_IRQFD
601 int kvm_irqfd_init(void);
602 void kvm_irqfd_exit(void);
604 static inline int kvm_irqfd_init(void)
609 static inline void kvm_irqfd_exit(void)
613 int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align,
614 struct module *module);
617 void kvm_get_kvm(struct kvm *kvm);
618 void kvm_put_kvm(struct kvm *kvm);
619 void kvm_put_kvm_no_destroy(struct kvm *kvm);
621 static inline struct kvm_memslots *__kvm_memslots(struct kvm *kvm, int as_id)
623 as_id = array_index_nospec(as_id, KVM_ADDRESS_SPACE_NUM);
624 return srcu_dereference_check(kvm->memslots[as_id], &kvm->srcu,
625 lockdep_is_held(&kvm->slots_lock) ||
626 !refcount_read(&kvm->users_count));
629 static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm)
631 return __kvm_memslots(kvm, 0);
634 static inline struct kvm_memslots *kvm_vcpu_memslots(struct kvm_vcpu *vcpu)
636 int as_id = kvm_arch_vcpu_memslots_id(vcpu);
638 return __kvm_memslots(vcpu->kvm, as_id);
641 static inline struct kvm_memory_slot *
642 id_to_memslot(struct kvm_memslots *slots, int id)
644 int index = slots->id_to_index[id];
645 struct kvm_memory_slot *slot;
647 slot = &slots->memslots[index];
649 WARN_ON(slot->id != id);
654 * KVM_SET_USER_MEMORY_REGION ioctl allows the following operations:
655 * - create a new memory slot
656 * - delete an existing memory slot
657 * - modify an existing memory slot
658 * -- move it in the guest physical memory space
659 * -- just change its flags
661 * Since flags can be changed by some of these operations, the following
662 * differentiation is the best we can do for __kvm_set_memory_region():
671 int kvm_set_memory_region(struct kvm *kvm,
672 const struct kvm_userspace_memory_region *mem);
673 int __kvm_set_memory_region(struct kvm *kvm,
674 const struct kvm_userspace_memory_region *mem);
675 void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free,
676 struct kvm_memory_slot *dont);
677 int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot,
678 unsigned long npages);
679 void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen);
680 int kvm_arch_prepare_memory_region(struct kvm *kvm,
681 struct kvm_memory_slot *memslot,
682 const struct kvm_userspace_memory_region *mem,
683 enum kvm_mr_change change);
684 void kvm_arch_commit_memory_region(struct kvm *kvm,
685 const struct kvm_userspace_memory_region *mem,
686 const struct kvm_memory_slot *old,
687 const struct kvm_memory_slot *new,
688 enum kvm_mr_change change);
689 bool kvm_largepages_enabled(void);
690 void kvm_disable_largepages(void);
691 /* flush all memory translations */
692 void kvm_arch_flush_shadow_all(struct kvm *kvm);
693 /* flush memory translations pointing to 'slot' */
694 void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
695 struct kvm_memory_slot *slot);
697 int gfn_to_page_many_atomic(struct kvm_memory_slot *slot, gfn_t gfn,
698 struct page **pages, int nr_pages);
700 struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn);
701 unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn);
702 unsigned long gfn_to_hva_prot(struct kvm *kvm, gfn_t gfn, bool *writable);
703 unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn);
704 unsigned long gfn_to_hva_memslot_prot(struct kvm_memory_slot *slot, gfn_t gfn,
706 void kvm_release_page_clean(struct page *page);
707 void kvm_release_page_dirty(struct page *page);
708 void kvm_set_page_accessed(struct page *page);
710 kvm_pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn);
711 kvm_pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn);
712 kvm_pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault,
714 kvm_pfn_t gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn);
715 kvm_pfn_t gfn_to_pfn_memslot_atomic(struct kvm_memory_slot *slot, gfn_t gfn);
716 kvm_pfn_t __gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn,
717 bool atomic, bool *async, bool write_fault,
720 void kvm_release_pfn_clean(kvm_pfn_t pfn);
721 void kvm_release_pfn_dirty(kvm_pfn_t pfn);
722 void kvm_set_pfn_dirty(kvm_pfn_t pfn);
723 void kvm_set_pfn_accessed(kvm_pfn_t pfn);
724 void kvm_get_pfn(kvm_pfn_t pfn);
726 int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset,
728 int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data,
730 int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len);
731 int kvm_read_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
732 void *data, unsigned long len);
733 int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data,
734 int offset, int len);
735 int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data,
737 int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
738 void *data, unsigned long len);
739 int kvm_write_guest_offset_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
740 void *data, unsigned int offset,
742 int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
743 gpa_t gpa, unsigned long len);
745 #define __kvm_put_guest(kvm, gfn, offset, value, type) \
747 unsigned long __addr = gfn_to_hva(kvm, gfn); \
748 type __user *__uaddr = (type __user *)(__addr + offset); \
749 int __ret = -EFAULT; \
751 if (!kvm_is_error_hva(__addr)) \
752 __ret = put_user(value, __uaddr); \
754 mark_page_dirty(kvm, gfn); \
758 #define kvm_put_guest(kvm, gpa, value, type) \
761 struct kvm *__kvm = kvm; \
762 __kvm_put_guest(__kvm, __gpa >> PAGE_SHIFT, \
763 offset_in_page(__gpa), (value), type); \
766 int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
767 int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
768 struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
769 bool kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
770 unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn);
771 void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
773 struct kvm_memslots *kvm_vcpu_memslots(struct kvm_vcpu *vcpu);
774 struct kvm_memory_slot *kvm_vcpu_gfn_to_memslot(struct kvm_vcpu *vcpu, gfn_t gfn);
775 kvm_pfn_t kvm_vcpu_gfn_to_pfn_atomic(struct kvm_vcpu *vcpu, gfn_t gfn);
776 kvm_pfn_t kvm_vcpu_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn);
777 int kvm_vcpu_map(struct kvm_vcpu *vcpu, gpa_t gpa, struct kvm_host_map *map);
778 struct page *kvm_vcpu_gfn_to_page(struct kvm_vcpu *vcpu, gfn_t gfn);
779 void kvm_vcpu_unmap(struct kvm_vcpu *vcpu, struct kvm_host_map *map, bool dirty);
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 int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu);
871 void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu);
873 void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu);
875 void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu);
876 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
877 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
878 struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id);
879 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu);
880 void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu);
881 void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu);
883 #ifdef __KVM_HAVE_ARCH_VCPU_DEBUGFS
884 void kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu);
887 int kvm_arch_hardware_enable(void);
888 void kvm_arch_hardware_disable(void);
889 int kvm_arch_hardware_setup(void);
890 void kvm_arch_hardware_unsetup(void);
891 int kvm_arch_check_processor_compat(void);
892 int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu);
893 bool kvm_arch_vcpu_in_kernel(struct kvm_vcpu *vcpu);
894 int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu);
895 bool kvm_arch_dy_runnable(struct kvm_vcpu *vcpu);
897 #ifndef __KVM_HAVE_ARCH_VM_ALLOC
899 * All architectures that want to use vzalloc currently also
900 * need their own kvm_arch_alloc_vm implementation.
902 static inline struct kvm *kvm_arch_alloc_vm(void)
904 return kzalloc(sizeof(struct kvm), GFP_KERNEL);
907 static inline void kvm_arch_free_vm(struct kvm *kvm)
913 #ifndef __KVM_HAVE_ARCH_FLUSH_REMOTE_TLB
914 static inline int kvm_arch_flush_remote_tlb(struct kvm *kvm)
920 #ifdef __KVM_HAVE_ARCH_NONCOHERENT_DMA
921 void kvm_arch_register_noncoherent_dma(struct kvm *kvm);
922 void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm);
923 bool kvm_arch_has_noncoherent_dma(struct kvm *kvm);
925 static inline void kvm_arch_register_noncoherent_dma(struct kvm *kvm)
929 static inline void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm)
933 static inline bool kvm_arch_has_noncoherent_dma(struct kvm *kvm)
938 #ifdef __KVM_HAVE_ARCH_ASSIGNED_DEVICE
939 void kvm_arch_start_assignment(struct kvm *kvm);
940 void kvm_arch_end_assignment(struct kvm *kvm);
941 bool kvm_arch_has_assigned_device(struct kvm *kvm);
943 static inline void kvm_arch_start_assignment(struct kvm *kvm)
947 static inline void kvm_arch_end_assignment(struct kvm *kvm)
951 static inline bool kvm_arch_has_assigned_device(struct kvm *kvm)
957 static inline struct swait_queue_head *kvm_arch_vcpu_wq(struct kvm_vcpu *vcpu)
959 #ifdef __KVM_HAVE_ARCH_WQP
960 return vcpu->arch.wqp;
966 #ifdef __KVM_HAVE_ARCH_INTC_INITIALIZED
968 * returns true if the virtual interrupt controller is initialized and
969 * ready to accept virtual IRQ. On some architectures the virtual interrupt
970 * controller is dynamically instantiated and this is not always true.
972 bool kvm_arch_intc_initialized(struct kvm *kvm);
974 static inline bool kvm_arch_intc_initialized(struct kvm *kvm)
980 int kvm_arch_init_vm(struct kvm *kvm, unsigned long type);
981 void kvm_arch_destroy_vm(struct kvm *kvm);
982 void kvm_arch_sync_events(struct kvm *kvm);
984 int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu);
985 void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
987 bool kvm_is_reserved_pfn(kvm_pfn_t pfn);
988 bool kvm_is_zone_device_pfn(kvm_pfn_t pfn);
990 struct kvm_irq_ack_notifier {
991 struct hlist_node link;
993 void (*irq_acked)(struct kvm_irq_ack_notifier *kian);
996 int kvm_irq_map_gsi(struct kvm *kvm,
997 struct kvm_kernel_irq_routing_entry *entries, int gsi);
998 int kvm_irq_map_chip_pin(struct kvm *kvm, unsigned irqchip, unsigned pin);
1000 int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level,
1002 int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm,
1003 int irq_source_id, int level, bool line_status);
1004 int kvm_arch_set_irq_inatomic(struct kvm_kernel_irq_routing_entry *e,
1005 struct kvm *kvm, int irq_source_id,
1006 int level, bool line_status);
1007 bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin);
1008 void kvm_notify_acked_gsi(struct kvm *kvm, int gsi);
1009 void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin);
1010 void kvm_register_irq_ack_notifier(struct kvm *kvm,
1011 struct kvm_irq_ack_notifier *kian);
1012 void kvm_unregister_irq_ack_notifier(struct kvm *kvm,
1013 struct kvm_irq_ack_notifier *kian);
1014 int kvm_request_irq_source_id(struct kvm *kvm);
1015 void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id);
1016 bool kvm_arch_irqfd_allowed(struct kvm *kvm, struct kvm_irqfd *args);
1019 * search_memslots() and __gfn_to_memslot() are here because they are
1020 * used in non-modular code in arch/powerpc/kvm/book3s_hv_rm_mmu.c.
1021 * gfn_to_memslot() itself isn't here as an inline because that would
1022 * bloat other code too much.
1024 static inline struct kvm_memory_slot *
1025 search_memslots(struct kvm_memslots *slots, gfn_t gfn)
1027 int start = 0, end = slots->used_slots;
1028 int slot = atomic_read(&slots->lru_slot);
1029 struct kvm_memory_slot *memslots = slots->memslots;
1031 if (gfn >= memslots[slot].base_gfn &&
1032 gfn < memslots[slot].base_gfn + memslots[slot].npages)
1033 return &memslots[slot];
1035 while (start < end) {
1036 slot = start + (end - start) / 2;
1038 if (gfn >= memslots[slot].base_gfn)
1044 if (gfn >= memslots[start].base_gfn &&
1045 gfn < memslots[start].base_gfn + memslots[start].npages) {
1046 atomic_set(&slots->lru_slot, start);
1047 return &memslots[start];
1053 static inline struct kvm_memory_slot *
1054 __gfn_to_memslot(struct kvm_memslots *slots, gfn_t gfn)
1056 return search_memslots(slots, gfn);
1059 static inline unsigned long
1060 __gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn)
1062 return slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE;
1065 static inline int memslot_id(struct kvm *kvm, gfn_t gfn)
1067 return gfn_to_memslot(kvm, gfn)->id;
1071 hva_to_gfn_memslot(unsigned long hva, struct kvm_memory_slot *slot)
1073 gfn_t gfn_offset = (hva - slot->userspace_addr) >> PAGE_SHIFT;
1075 return slot->base_gfn + gfn_offset;
1078 static inline gpa_t gfn_to_gpa(gfn_t gfn)
1080 return (gpa_t)gfn << PAGE_SHIFT;
1083 static inline gfn_t gpa_to_gfn(gpa_t gpa)
1085 return (gfn_t)(gpa >> PAGE_SHIFT);
1088 static inline hpa_t pfn_to_hpa(kvm_pfn_t pfn)
1090 return (hpa_t)pfn << PAGE_SHIFT;
1093 static inline struct page *kvm_vcpu_gpa_to_page(struct kvm_vcpu *vcpu,
1096 return kvm_vcpu_gfn_to_page(vcpu, gpa_to_gfn(gpa));
1099 static inline bool kvm_is_error_gpa(struct kvm *kvm, gpa_t gpa)
1101 unsigned long hva = gfn_to_hva(kvm, gpa_to_gfn(gpa));
1103 return kvm_is_error_hva(hva);
1106 enum kvm_stat_kind {
1111 struct kvm_stat_data {
1117 struct kvm_stats_debugfs_item {
1120 enum kvm_stat_kind kind;
1123 extern struct kvm_stats_debugfs_item debugfs_entries[];
1124 extern struct dentry *kvm_debugfs_dir;
1126 #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER)
1127 static inline int mmu_notifier_retry(struct kvm *kvm, unsigned long mmu_seq)
1129 if (unlikely(kvm->mmu_notifier_count))
1132 * Ensure the read of mmu_notifier_count happens before the read
1133 * of mmu_notifier_seq. This interacts with the smp_wmb() in
1134 * mmu_notifier_invalidate_range_end to make sure that the caller
1135 * either sees the old (non-zero) value of mmu_notifier_count or
1136 * the new (incremented) value of mmu_notifier_seq.
1137 * PowerPC Book3s HV KVM calls this under a per-page lock
1138 * rather than under kvm->mmu_lock, for scalability, so
1139 * can't rely on kvm->mmu_lock to keep things ordered.
1142 if (kvm->mmu_notifier_seq != mmu_seq)
1148 #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING
1150 #define KVM_MAX_IRQ_ROUTES 4096 /* might need extension/rework in the future */
1152 bool kvm_arch_can_set_irq_routing(struct kvm *kvm);
1153 int kvm_set_irq_routing(struct kvm *kvm,
1154 const struct kvm_irq_routing_entry *entries,
1157 int kvm_set_routing_entry(struct kvm *kvm,
1158 struct kvm_kernel_irq_routing_entry *e,
1159 const struct kvm_irq_routing_entry *ue);
1160 void kvm_free_irq_routing(struct kvm *kvm);
1164 static inline void kvm_free_irq_routing(struct kvm *kvm) {}
1168 int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi);
1170 #ifdef CONFIG_HAVE_KVM_EVENTFD
1172 void kvm_eventfd_init(struct kvm *kvm);
1173 int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args);
1175 #ifdef CONFIG_HAVE_KVM_IRQFD
1176 int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args);
1177 void kvm_irqfd_release(struct kvm *kvm);
1178 void kvm_irq_routing_update(struct kvm *);
1180 static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args)
1185 static inline void kvm_irqfd_release(struct kvm *kvm) {}
1190 static inline void kvm_eventfd_init(struct kvm *kvm) {}
1192 static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args)
1197 static inline void kvm_irqfd_release(struct kvm *kvm) {}
1199 #ifdef CONFIG_HAVE_KVM_IRQCHIP
1200 static inline void kvm_irq_routing_update(struct kvm *kvm)
1205 static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
1210 #endif /* CONFIG_HAVE_KVM_EVENTFD */
1212 void kvm_arch_irq_routing_update(struct kvm *kvm);
1214 static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu)
1217 * Ensure the rest of the request is published to kvm_check_request's
1218 * caller. Paired with the smp_mb__after_atomic in kvm_check_request.
1221 set_bit(req & KVM_REQUEST_MASK, (void *)&vcpu->requests);
1224 static inline bool kvm_request_pending(struct kvm_vcpu *vcpu)
1226 return READ_ONCE(vcpu->requests);
1229 static inline bool kvm_test_request(int req, struct kvm_vcpu *vcpu)
1231 return test_bit(req & KVM_REQUEST_MASK, (void *)&vcpu->requests);
1234 static inline void kvm_clear_request(int req, struct kvm_vcpu *vcpu)
1236 clear_bit(req & KVM_REQUEST_MASK, (void *)&vcpu->requests);
1239 static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu)
1241 if (kvm_test_request(req, vcpu)) {
1242 kvm_clear_request(req, vcpu);
1245 * Ensure the rest of the request is visible to kvm_check_request's
1246 * caller. Paired with the smp_wmb in kvm_make_request.
1248 smp_mb__after_atomic();
1255 extern bool kvm_rebooting;
1257 extern unsigned int halt_poll_ns;
1258 extern unsigned int halt_poll_ns_grow;
1259 extern unsigned int halt_poll_ns_grow_start;
1260 extern unsigned int halt_poll_ns_shrink;
1263 const struct kvm_device_ops *ops;
1266 struct list_head vm_node;
1269 /* create, destroy, and name are mandatory */
1270 struct kvm_device_ops {
1274 * create is called holding kvm->lock and any operations not suitable
1275 * to do while holding the lock should be deferred to init (see
1278 int (*create)(struct kvm_device *dev, u32 type);
1281 * init is called after create if create is successful and is called
1282 * outside of holding kvm->lock.
1284 void (*init)(struct kvm_device *dev);
1287 * Destroy is responsible for freeing dev.
1289 * Destroy may be called before or after destructors are called
1290 * on emulated I/O regions, depending on whether a reference is
1291 * held by a vcpu or other kvm component that gets destroyed
1292 * after the emulated I/O.
1294 void (*destroy)(struct kvm_device *dev);
1297 * Release is an alternative method to free the device. It is
1298 * called when the device file descriptor is closed. Once
1299 * release is called, the destroy method will not be called
1300 * anymore as the device is removed from the device list of
1301 * the VM. kvm->lock is held.
1303 void (*release)(struct kvm_device *dev);
1305 int (*set_attr)(struct kvm_device *dev, struct kvm_device_attr *attr);
1306 int (*get_attr)(struct kvm_device *dev, struct kvm_device_attr *attr);
1307 int (*has_attr)(struct kvm_device *dev, struct kvm_device_attr *attr);
1308 long (*ioctl)(struct kvm_device *dev, unsigned int ioctl,
1310 int (*mmap)(struct kvm_device *dev, struct vm_area_struct *vma);
1313 void kvm_device_get(struct kvm_device *dev);
1314 void kvm_device_put(struct kvm_device *dev);
1315 struct kvm_device *kvm_device_from_filp(struct file *filp);
1316 int kvm_register_device_ops(const struct kvm_device_ops *ops, u32 type);
1317 void kvm_unregister_device_ops(u32 type);
1319 extern struct kvm_device_ops kvm_mpic_ops;
1320 extern struct kvm_device_ops kvm_arm_vgic_v2_ops;
1321 extern struct kvm_device_ops kvm_arm_vgic_v3_ops;
1323 #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT
1325 static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val)
1327 vcpu->spin_loop.in_spin_loop = val;
1329 static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val)
1331 vcpu->spin_loop.dy_eligible = val;
1334 #else /* !CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */
1336 static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val)
1340 static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val)
1343 #endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */
1345 #ifdef CONFIG_HAVE_KVM_IRQ_BYPASS
1346 bool kvm_arch_has_irq_bypass(void);
1347 int kvm_arch_irq_bypass_add_producer(struct irq_bypass_consumer *,
1348 struct irq_bypass_producer *);
1349 void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer *,
1350 struct irq_bypass_producer *);
1351 void kvm_arch_irq_bypass_stop(struct irq_bypass_consumer *);
1352 void kvm_arch_irq_bypass_start(struct irq_bypass_consumer *);
1353 int kvm_arch_update_irqfd_routing(struct kvm *kvm, unsigned int host_irq,
1354 uint32_t guest_irq, bool set);
1355 #endif /* CONFIG_HAVE_KVM_IRQ_BYPASS */
1357 #ifdef CONFIG_HAVE_KVM_INVALID_WAKEUPS
1358 /* If we wakeup during the poll time, was it a sucessful poll? */
1359 static inline bool vcpu_valid_wakeup(struct kvm_vcpu *vcpu)
1361 return vcpu->valid_wakeup;
1365 static inline bool vcpu_valid_wakeup(struct kvm_vcpu *vcpu)
1369 #endif /* CONFIG_HAVE_KVM_INVALID_WAKEUPS */
1371 #ifdef CONFIG_HAVE_KVM_NO_POLL
1372 /* Callback that tells if we must not poll */
1373 bool kvm_arch_no_poll(struct kvm_vcpu *vcpu);
1375 static inline bool kvm_arch_no_poll(struct kvm_vcpu *vcpu)
1379 #endif /* CONFIG_HAVE_KVM_NO_POLL */
1381 #ifdef CONFIG_HAVE_KVM_VCPU_ASYNC_IOCTL
1382 long kvm_arch_vcpu_async_ioctl(struct file *filp,
1383 unsigned int ioctl, unsigned long arg);
1385 static inline long kvm_arch_vcpu_async_ioctl(struct file *filp,
1389 return -ENOIOCTLCMD;
1391 #endif /* CONFIG_HAVE_KVM_VCPU_ASYNC_IOCTL */
1393 int kvm_arch_mmu_notifier_invalidate_range(struct kvm *kvm,
1394 unsigned long start, unsigned long end, bool blockable);
1396 #ifdef CONFIG_HAVE_KVM_VCPU_RUN_PID_CHANGE
1397 int kvm_arch_vcpu_run_pid_change(struct kvm_vcpu *vcpu);
1399 static inline int kvm_arch_vcpu_run_pid_change(struct kvm_vcpu *vcpu)
1403 #endif /* CONFIG_HAVE_KVM_VCPU_RUN_PID_CHANGE */
1405 typedef int (*kvm_vm_thread_fn_t)(struct kvm *kvm, uintptr_t data);
1407 int kvm_vm_create_worker_thread(struct kvm *kvm, kvm_vm_thread_fn_t thread_fn,
1408 uintptr_t data, const char *name,
1409 struct task_struct **thread_ptr);