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) >= (FIELD_SIZEOF(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 spinlock_t 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
;
273 unsigned long guest_debug
;
276 struct list_head blocked_vcpu_list
;
281 int guest_xcr0_loaded
;
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.
321 struct kvm_vcpu_arch arch
;
322 struct dentry
*debugfs_dentry
;
325 static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu
*vcpu
)
328 * The memory barrier ensures a previous write to vcpu->requests cannot
329 * be reordered with the read of vcpu->mode. It pairs with the general
330 * memory barrier following the write of vcpu->mode in VCPU RUN.
332 smp_mb__before_atomic();
333 return cmpxchg(&vcpu
->mode
, IN_GUEST_MODE
, EXITING_GUEST_MODE
);
337 * Some of the bitops functions do not support too long bitmaps.
338 * This number must be determined not to exceed such limits.
340 #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1)
342 struct kvm_memory_slot
{
344 unsigned long npages
;
345 unsigned long *dirty_bitmap
;
346 struct kvm_arch_memory_slot arch
;
347 unsigned long userspace_addr
;
352 static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot
*memslot
)
354 return ALIGN(memslot
->npages
, BITS_PER_LONG
) / 8;
357 static inline unsigned long *kvm_second_dirty_bitmap(struct kvm_memory_slot
*memslot
)
359 unsigned long len
= kvm_dirty_bitmap_bytes(memslot
);
361 return memslot
->dirty_bitmap
+ len
/ sizeof(*memslot
->dirty_bitmap
);
364 struct kvm_s390_adapter_int
{
377 struct kvm_kernel_irq_routing_entry
{
380 int (*set
)(struct kvm_kernel_irq_routing_entry
*e
,
381 struct kvm
*kvm
, int irq_source_id
, int level
,
395 struct kvm_s390_adapter_int adapter
;
396 struct kvm_hv_sint hv_sint
;
398 struct hlist_node link
;
401 #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING
402 struct kvm_irq_routing_table
{
403 int chip
[KVM_NR_IRQCHIPS
][KVM_IRQCHIP_NUM_PINS
];
406 * Array indexed by gsi. Each entry contains list of irq chips
407 * the gsi is connected to.
409 struct hlist_head map
[0];
413 #ifndef KVM_PRIVATE_MEM_SLOTS
414 #define KVM_PRIVATE_MEM_SLOTS 0
417 #ifndef KVM_MEM_SLOTS_NUM
418 #define KVM_MEM_SLOTS_NUM (KVM_USER_MEM_SLOTS + KVM_PRIVATE_MEM_SLOTS)
421 #ifndef __KVM_VCPU_MULTIPLE_ADDRESS_SPACE
422 static inline int kvm_arch_vcpu_memslots_id(struct kvm_vcpu
*vcpu
)
430 * memslots are not sorted by id anymore, please use id_to_memslot()
431 * to get the memslot by its id.
433 struct kvm_memslots
{
435 struct kvm_memory_slot memslots
[KVM_MEM_SLOTS_NUM
];
436 /* The mapping table from slot id to the index in memslots[]. */
437 short id_to_index
[KVM_MEM_SLOTS_NUM
];
444 struct mutex slots_lock
;
445 struct mm_struct
*mm
; /* userspace tied to this vm */
446 struct kvm_memslots __rcu
*memslots
[KVM_ADDRESS_SPACE_NUM
];
447 struct kvm_vcpu
*vcpus
[KVM_MAX_VCPUS
];
450 * created_vcpus is protected by kvm->lock, and is incremented
451 * at the beginning of KVM_CREATE_VCPU. online_vcpus is only
452 * incremented after storing the kvm_vcpu pointer in vcpus,
453 * and is accessed atomically.
455 atomic_t online_vcpus
;
457 int last_boosted_vcpu
;
458 struct list_head vm_list
;
460 struct kvm_io_bus __rcu
*buses
[KVM_NR_BUSES
];
461 #ifdef CONFIG_HAVE_KVM_EVENTFD
464 struct list_head items
;
465 struct list_head resampler_list
;
466 struct mutex resampler_lock
;
468 struct list_head ioeventfds
;
470 struct kvm_vm_stat stat
;
471 struct kvm_arch arch
;
472 refcount_t users_count
;
473 #ifdef CONFIG_KVM_MMIO
474 struct kvm_coalesced_mmio_ring
*coalesced_mmio_ring
;
475 spinlock_t ring_lock
;
476 struct list_head coalesced_zones
;
479 struct mutex irq_lock
;
480 #ifdef CONFIG_HAVE_KVM_IRQCHIP
482 * Update side is protected by irq_lock.
484 struct kvm_irq_routing_table __rcu
*irq_routing
;
486 #ifdef CONFIG_HAVE_KVM_IRQFD
487 struct hlist_head irq_ack_notifier_list
;
490 #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER)
491 struct mmu_notifier mmu_notifier
;
492 unsigned long mmu_notifier_seq
;
493 long mmu_notifier_count
;
496 struct list_head devices
;
497 bool manual_dirty_log_protect
;
498 struct dentry
*debugfs_dentry
;
499 struct kvm_stat_data
**debugfs_stat_data
;
500 struct srcu_struct srcu
;
501 struct srcu_struct irq_srcu
;
505 #define kvm_err(fmt, ...) \
506 pr_err("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__)
507 #define kvm_info(fmt, ...) \
508 pr_info("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__)
509 #define kvm_debug(fmt, ...) \
510 pr_debug("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__)
511 #define kvm_debug_ratelimited(fmt, ...) \
512 pr_debug_ratelimited("kvm [%i]: " fmt, task_pid_nr(current), \
514 #define kvm_pr_unimpl(fmt, ...) \
515 pr_err_ratelimited("kvm [%i]: " fmt, \
516 task_tgid_nr(current), ## __VA_ARGS__)
518 /* The guest did something we don't support. */
519 #define vcpu_unimpl(vcpu, fmt, ...) \
520 kvm_pr_unimpl("vcpu%i, guest rIP: 0x%lx " fmt, \
521 (vcpu)->vcpu_id, kvm_rip_read(vcpu), ## __VA_ARGS__)
523 #define vcpu_debug(vcpu, fmt, ...) \
524 kvm_debug("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__)
525 #define vcpu_debug_ratelimited(vcpu, fmt, ...) \
526 kvm_debug_ratelimited("vcpu%i " fmt, (vcpu)->vcpu_id, \
528 #define vcpu_err(vcpu, fmt, ...) \
529 kvm_err("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__)
531 static inline struct kvm_io_bus
*kvm_get_bus(struct kvm
*kvm
, enum kvm_bus idx
)
533 return srcu_dereference_check(kvm
->buses
[idx
], &kvm
->srcu
,
534 lockdep_is_held(&kvm
->slots_lock
) ||
535 !refcount_read(&kvm
->users_count
));
538 static inline struct kvm_vcpu
*kvm_get_vcpu(struct kvm
*kvm
, int i
)
540 int num_vcpus
= atomic_read(&kvm
->online_vcpus
);
541 i
= array_index_nospec(i
, num_vcpus
);
543 /* Pairs with smp_wmb() in kvm_vm_ioctl_create_vcpu. */
545 return kvm
->vcpus
[i
];
548 #define kvm_for_each_vcpu(idx, vcpup, kvm) \
550 idx < atomic_read(&kvm->online_vcpus) && \
551 (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \
554 static inline struct kvm_vcpu
*kvm_get_vcpu_by_id(struct kvm
*kvm
, int id
)
556 struct kvm_vcpu
*vcpu
= NULL
;
561 if (id
< KVM_MAX_VCPUS
)
562 vcpu
= kvm_get_vcpu(kvm
, id
);
563 if (vcpu
&& vcpu
->vcpu_id
== id
)
565 kvm_for_each_vcpu(i
, vcpu
, kvm
)
566 if (vcpu
->vcpu_id
== id
)
571 static inline int kvm_vcpu_get_idx(struct kvm_vcpu
*vcpu
)
573 struct kvm_vcpu
*tmp
;
576 kvm_for_each_vcpu(idx
, tmp
, vcpu
->kvm
)
582 #define kvm_for_each_memslot(memslot, slots) \
583 for (memslot = &slots->memslots[0]; \
584 memslot < slots->memslots + KVM_MEM_SLOTS_NUM && memslot->npages;\
587 int kvm_vcpu_init(struct kvm_vcpu
*vcpu
, struct kvm
*kvm
, unsigned id
);
588 void kvm_vcpu_uninit(struct kvm_vcpu
*vcpu
);
590 void vcpu_load(struct kvm_vcpu
*vcpu
);
591 void vcpu_put(struct kvm_vcpu
*vcpu
);
593 #ifdef __KVM_HAVE_IOAPIC
594 void kvm_arch_post_irq_ack_notifier_list_update(struct kvm
*kvm
);
595 void kvm_arch_post_irq_routing_update(struct kvm
*kvm
);
597 static inline void kvm_arch_post_irq_ack_notifier_list_update(struct kvm
*kvm
)
600 static inline void kvm_arch_post_irq_routing_update(struct kvm
*kvm
)
605 #ifdef CONFIG_HAVE_KVM_IRQFD
606 int kvm_irqfd_init(void);
607 void kvm_irqfd_exit(void);
609 static inline int kvm_irqfd_init(void)
614 static inline void kvm_irqfd_exit(void)
618 int kvm_init(void *opaque
, unsigned vcpu_size
, unsigned vcpu_align
,
619 struct module
*module
);
622 void kvm_get_kvm(struct kvm
*kvm
);
623 void kvm_put_kvm(struct kvm
*kvm
);
625 static inline struct kvm_memslots
*__kvm_memslots(struct kvm
*kvm
, int as_id
)
627 as_id
= array_index_nospec(as_id
, KVM_ADDRESS_SPACE_NUM
);
628 return srcu_dereference_check(kvm
->memslots
[as_id
], &kvm
->srcu
,
629 lockdep_is_held(&kvm
->slots_lock
) ||
630 !refcount_read(&kvm
->users_count
));
633 static inline struct kvm_memslots
*kvm_memslots(struct kvm
*kvm
)
635 return __kvm_memslots(kvm
, 0);
638 static inline struct kvm_memslots
*kvm_vcpu_memslots(struct kvm_vcpu
*vcpu
)
640 int as_id
= kvm_arch_vcpu_memslots_id(vcpu
);
642 return __kvm_memslots(vcpu
->kvm
, as_id
);
645 static inline struct kvm_memory_slot
*
646 id_to_memslot(struct kvm_memslots
*slots
, int id
)
648 int index
= slots
->id_to_index
[id
];
649 struct kvm_memory_slot
*slot
;
651 slot
= &slots
->memslots
[index
];
653 WARN_ON(slot
->id
!= id
);
658 * KVM_SET_USER_MEMORY_REGION ioctl allows the following operations:
659 * - create a new memory slot
660 * - delete an existing memory slot
661 * - modify an existing memory slot
662 * -- move it in the guest physical memory space
663 * -- just change its flags
665 * Since flags can be changed by some of these operations, the following
666 * differentiation is the best we can do for __kvm_set_memory_region():
675 int kvm_set_memory_region(struct kvm
*kvm
,
676 const struct kvm_userspace_memory_region
*mem
);
677 int __kvm_set_memory_region(struct kvm
*kvm
,
678 const struct kvm_userspace_memory_region
*mem
);
679 void kvm_arch_free_memslot(struct kvm
*kvm
, struct kvm_memory_slot
*free
,
680 struct kvm_memory_slot
*dont
);
681 int kvm_arch_create_memslot(struct kvm
*kvm
, struct kvm_memory_slot
*slot
,
682 unsigned long npages
);
683 void kvm_arch_memslots_updated(struct kvm
*kvm
, u64 gen
);
684 int kvm_arch_prepare_memory_region(struct kvm
*kvm
,
685 struct kvm_memory_slot
*memslot
,
686 const struct kvm_userspace_memory_region
*mem
,
687 enum kvm_mr_change change
);
688 void kvm_arch_commit_memory_region(struct kvm
*kvm
,
689 const struct kvm_userspace_memory_region
*mem
,
690 const struct kvm_memory_slot
*old
,
691 const struct kvm_memory_slot
*new,
692 enum kvm_mr_change change
);
693 bool kvm_largepages_enabled(void);
694 void kvm_disable_largepages(void);
695 /* flush all memory translations */
696 void kvm_arch_flush_shadow_all(struct kvm
*kvm
);
697 /* flush memory translations pointing to 'slot' */
698 void kvm_arch_flush_shadow_memslot(struct kvm
*kvm
,
699 struct kvm_memory_slot
*slot
);
701 int gfn_to_page_many_atomic(struct kvm_memory_slot
*slot
, gfn_t gfn
,
702 struct page
**pages
, int nr_pages
);
704 struct page
*gfn_to_page(struct kvm
*kvm
, gfn_t gfn
);
705 unsigned long gfn_to_hva(struct kvm
*kvm
, gfn_t gfn
);
706 unsigned long gfn_to_hva_prot(struct kvm
*kvm
, gfn_t gfn
, bool *writable
);
707 unsigned long gfn_to_hva_memslot(struct kvm_memory_slot
*slot
, gfn_t gfn
);
708 unsigned long gfn_to_hva_memslot_prot(struct kvm_memory_slot
*slot
, gfn_t gfn
,
710 void kvm_release_page_clean(struct page
*page
);
711 void kvm_release_page_dirty(struct page
*page
);
712 void kvm_set_page_accessed(struct page
*page
);
714 kvm_pfn_t
gfn_to_pfn_atomic(struct kvm
*kvm
, gfn_t gfn
);
715 kvm_pfn_t
gfn_to_pfn(struct kvm
*kvm
, gfn_t gfn
);
716 kvm_pfn_t
gfn_to_pfn_prot(struct kvm
*kvm
, gfn_t gfn
, bool write_fault
,
718 kvm_pfn_t
gfn_to_pfn_memslot(struct kvm_memory_slot
*slot
, gfn_t gfn
);
719 kvm_pfn_t
gfn_to_pfn_memslot_atomic(struct kvm_memory_slot
*slot
, gfn_t gfn
);
720 kvm_pfn_t
__gfn_to_pfn_memslot(struct kvm_memory_slot
*slot
, gfn_t gfn
,
721 bool atomic
, bool *async
, bool write_fault
,
724 void kvm_release_pfn_clean(kvm_pfn_t pfn
);
725 void kvm_release_pfn_dirty(kvm_pfn_t pfn
);
726 void kvm_set_pfn_dirty(kvm_pfn_t pfn
);
727 void kvm_set_pfn_accessed(kvm_pfn_t pfn
);
728 void kvm_get_pfn(kvm_pfn_t pfn
);
730 int kvm_read_guest_page(struct kvm
*kvm
, gfn_t gfn
, void *data
, int offset
,
732 int kvm_read_guest_atomic(struct kvm
*kvm
, gpa_t gpa
, void *data
,
734 int kvm_read_guest(struct kvm
*kvm
, gpa_t gpa
, void *data
, unsigned long len
);
735 int kvm_read_guest_cached(struct kvm
*kvm
, struct gfn_to_hva_cache
*ghc
,
736 void *data
, unsigned long len
);
737 int kvm_write_guest_page(struct kvm
*kvm
, gfn_t gfn
, const void *data
,
738 int offset
, int len
);
739 int kvm_write_guest(struct kvm
*kvm
, gpa_t gpa
, const void *data
,
741 int kvm_write_guest_cached(struct kvm
*kvm
, struct gfn_to_hva_cache
*ghc
,
742 void *data
, unsigned long len
);
743 int kvm_write_guest_offset_cached(struct kvm
*kvm
, struct gfn_to_hva_cache
*ghc
,
744 void *data
, unsigned int offset
,
746 int kvm_gfn_to_hva_cache_init(struct kvm
*kvm
, struct gfn_to_hva_cache
*ghc
,
747 gpa_t gpa
, unsigned long len
);
748 int kvm_clear_guest_page(struct kvm
*kvm
, gfn_t gfn
, int offset
, int len
);
749 int kvm_clear_guest(struct kvm
*kvm
, gpa_t gpa
, unsigned long len
);
750 struct kvm_memory_slot
*gfn_to_memslot(struct kvm
*kvm
, gfn_t gfn
);
751 bool kvm_is_visible_gfn(struct kvm
*kvm
, gfn_t gfn
);
752 unsigned long kvm_host_page_size(struct kvm
*kvm
, gfn_t gfn
);
753 void mark_page_dirty(struct kvm
*kvm
, gfn_t gfn
);
755 struct kvm_memslots
*kvm_vcpu_memslots(struct kvm_vcpu
*vcpu
);
756 struct kvm_memory_slot
*kvm_vcpu_gfn_to_memslot(struct kvm_vcpu
*vcpu
, gfn_t gfn
);
757 kvm_pfn_t
kvm_vcpu_gfn_to_pfn_atomic(struct kvm_vcpu
*vcpu
, gfn_t gfn
);
758 kvm_pfn_t
kvm_vcpu_gfn_to_pfn(struct kvm_vcpu
*vcpu
, gfn_t gfn
);
759 int kvm_vcpu_map(struct kvm_vcpu
*vcpu
, gpa_t gpa
, struct kvm_host_map
*map
);
760 struct page
*kvm_vcpu_gfn_to_page(struct kvm_vcpu
*vcpu
, gfn_t gfn
);
761 void kvm_vcpu_unmap(struct kvm_vcpu
*vcpu
, struct kvm_host_map
*map
, bool dirty
);
762 unsigned long kvm_vcpu_gfn_to_hva(struct kvm_vcpu
*vcpu
, gfn_t gfn
);
763 unsigned long kvm_vcpu_gfn_to_hva_prot(struct kvm_vcpu
*vcpu
, gfn_t gfn
, bool *writable
);
764 int kvm_vcpu_read_guest_page(struct kvm_vcpu
*vcpu
, gfn_t gfn
, void *data
, int offset
,
766 int kvm_vcpu_read_guest_atomic(struct kvm_vcpu
*vcpu
, gpa_t gpa
, void *data
,
768 int kvm_vcpu_read_guest(struct kvm_vcpu
*vcpu
, gpa_t gpa
, void *data
,
770 int kvm_vcpu_write_guest_page(struct kvm_vcpu
*vcpu
, gfn_t gfn
, const void *data
,
771 int offset
, int len
);
772 int kvm_vcpu_write_guest(struct kvm_vcpu
*vcpu
, gpa_t gpa
, const void *data
,
774 void kvm_vcpu_mark_page_dirty(struct kvm_vcpu
*vcpu
, gfn_t gfn
);
776 void kvm_sigset_activate(struct kvm_vcpu
*vcpu
);
777 void kvm_sigset_deactivate(struct kvm_vcpu
*vcpu
);
779 void kvm_vcpu_block(struct kvm_vcpu
*vcpu
);
780 void kvm_arch_vcpu_blocking(struct kvm_vcpu
*vcpu
);
781 void kvm_arch_vcpu_unblocking(struct kvm_vcpu
*vcpu
);
782 bool kvm_vcpu_wake_up(struct kvm_vcpu
*vcpu
);
783 void kvm_vcpu_kick(struct kvm_vcpu
*vcpu
);
784 int kvm_vcpu_yield_to(struct kvm_vcpu
*target
);
785 void kvm_vcpu_on_spin(struct kvm_vcpu
*vcpu
, bool usermode_vcpu_not_eligible
);
787 void kvm_flush_remote_tlbs(struct kvm
*kvm
);
788 void kvm_reload_remote_mmus(struct kvm
*kvm
);
790 bool kvm_make_vcpus_request_mask(struct kvm
*kvm
, unsigned int req
,
791 unsigned long *vcpu_bitmap
, cpumask_var_t tmp
);
792 bool kvm_make_all_cpus_request(struct kvm
*kvm
, unsigned int req
);
794 long kvm_arch_dev_ioctl(struct file
*filp
,
795 unsigned int ioctl
, unsigned long arg
);
796 long kvm_arch_vcpu_ioctl(struct file
*filp
,
797 unsigned int ioctl
, unsigned long arg
);
798 vm_fault_t
kvm_arch_vcpu_fault(struct kvm_vcpu
*vcpu
, struct vm_fault
*vmf
);
800 int kvm_vm_ioctl_check_extension(struct kvm
*kvm
, long ext
);
802 int kvm_get_dirty_log(struct kvm
*kvm
,
803 struct kvm_dirty_log
*log
, int *is_dirty
);
805 int kvm_get_dirty_log_protect(struct kvm
*kvm
,
806 struct kvm_dirty_log
*log
, bool *flush
);
807 int kvm_clear_dirty_log_protect(struct kvm
*kvm
,
808 struct kvm_clear_dirty_log
*log
, bool *flush
);
810 void kvm_arch_mmu_enable_log_dirty_pt_masked(struct kvm
*kvm
,
811 struct kvm_memory_slot
*slot
,
815 int kvm_vm_ioctl_get_dirty_log(struct kvm
*kvm
,
816 struct kvm_dirty_log
*log
);
817 int kvm_vm_ioctl_clear_dirty_log(struct kvm
*kvm
,
818 struct kvm_clear_dirty_log
*log
);
820 int kvm_vm_ioctl_irq_line(struct kvm
*kvm
, struct kvm_irq_level
*irq_level
,
822 int kvm_vm_ioctl_enable_cap(struct kvm
*kvm
,
823 struct kvm_enable_cap
*cap
);
824 long kvm_arch_vm_ioctl(struct file
*filp
,
825 unsigned int ioctl
, unsigned long arg
);
827 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu
*vcpu
, struct kvm_fpu
*fpu
);
828 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu
*vcpu
, struct kvm_fpu
*fpu
);
830 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu
*vcpu
,
831 struct kvm_translation
*tr
);
833 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu
*vcpu
, struct kvm_regs
*regs
);
834 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu
*vcpu
, struct kvm_regs
*regs
);
835 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu
*vcpu
,
836 struct kvm_sregs
*sregs
);
837 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu
*vcpu
,
838 struct kvm_sregs
*sregs
);
839 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu
*vcpu
,
840 struct kvm_mp_state
*mp_state
);
841 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu
*vcpu
,
842 struct kvm_mp_state
*mp_state
);
843 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu
*vcpu
,
844 struct kvm_guest_debug
*dbg
);
845 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
);
847 int kvm_arch_init(void *opaque
);
848 void kvm_arch_exit(void);
850 int kvm_arch_vcpu_init(struct kvm_vcpu
*vcpu
);
851 void kvm_arch_vcpu_uninit(struct kvm_vcpu
*vcpu
);
853 void kvm_arch_sched_in(struct kvm_vcpu
*vcpu
, int cpu
);
855 void kvm_arch_vcpu_free(struct kvm_vcpu
*vcpu
);
856 void kvm_arch_vcpu_load(struct kvm_vcpu
*vcpu
, int cpu
);
857 void kvm_arch_vcpu_put(struct kvm_vcpu
*vcpu
);
858 struct kvm_vcpu
*kvm_arch_vcpu_create(struct kvm
*kvm
, unsigned int id
);
859 int kvm_arch_vcpu_setup(struct kvm_vcpu
*vcpu
);
860 void kvm_arch_vcpu_postcreate(struct kvm_vcpu
*vcpu
);
861 void kvm_arch_vcpu_destroy(struct kvm_vcpu
*vcpu
);
863 bool kvm_arch_has_vcpu_debugfs(void);
864 int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu
*vcpu
);
866 int kvm_arch_hardware_enable(void);
867 void kvm_arch_hardware_disable(void);
868 int kvm_arch_hardware_setup(void);
869 void kvm_arch_hardware_unsetup(void);
870 void kvm_arch_check_processor_compat(void *rtn
);
871 int kvm_arch_vcpu_runnable(struct kvm_vcpu
*vcpu
);
872 bool kvm_arch_vcpu_in_kernel(struct kvm_vcpu
*vcpu
);
873 int kvm_arch_vcpu_should_kick(struct kvm_vcpu
*vcpu
);
875 #ifndef __KVM_HAVE_ARCH_VM_ALLOC
877 * All architectures that want to use vzalloc currently also
878 * need their own kvm_arch_alloc_vm implementation.
880 static inline struct kvm
*kvm_arch_alloc_vm(void)
882 return kzalloc(sizeof(struct kvm
), GFP_KERNEL
);
885 static inline void kvm_arch_free_vm(struct kvm
*kvm
)
891 #ifndef __KVM_HAVE_ARCH_FLUSH_REMOTE_TLB
892 static inline int kvm_arch_flush_remote_tlb(struct kvm
*kvm
)
898 #ifdef __KVM_HAVE_ARCH_NONCOHERENT_DMA
899 void kvm_arch_register_noncoherent_dma(struct kvm
*kvm
);
900 void kvm_arch_unregister_noncoherent_dma(struct kvm
*kvm
);
901 bool kvm_arch_has_noncoherent_dma(struct kvm
*kvm
);
903 static inline void kvm_arch_register_noncoherent_dma(struct kvm
*kvm
)
907 static inline void kvm_arch_unregister_noncoherent_dma(struct kvm
*kvm
)
911 static inline bool kvm_arch_has_noncoherent_dma(struct kvm
*kvm
)
916 #ifdef __KVM_HAVE_ARCH_ASSIGNED_DEVICE
917 void kvm_arch_start_assignment(struct kvm
*kvm
);
918 void kvm_arch_end_assignment(struct kvm
*kvm
);
919 bool kvm_arch_has_assigned_device(struct kvm
*kvm
);
921 static inline void kvm_arch_start_assignment(struct kvm
*kvm
)
925 static inline void kvm_arch_end_assignment(struct kvm
*kvm
)
929 static inline bool kvm_arch_has_assigned_device(struct kvm
*kvm
)
935 static inline struct swait_queue_head
*kvm_arch_vcpu_wq(struct kvm_vcpu
*vcpu
)
937 #ifdef __KVM_HAVE_ARCH_WQP
938 return vcpu
->arch
.wqp
;
944 #ifdef __KVM_HAVE_ARCH_INTC_INITIALIZED
946 * returns true if the virtual interrupt controller is initialized and
947 * ready to accept virtual IRQ. On some architectures the virtual interrupt
948 * controller is dynamically instantiated and this is not always true.
950 bool kvm_arch_intc_initialized(struct kvm
*kvm
);
952 static inline bool kvm_arch_intc_initialized(struct kvm
*kvm
)
958 int kvm_arch_init_vm(struct kvm
*kvm
, unsigned long type
);
959 void kvm_arch_destroy_vm(struct kvm
*kvm
);
960 void kvm_arch_sync_events(struct kvm
*kvm
);
962 int kvm_cpu_has_pending_timer(struct kvm_vcpu
*vcpu
);
963 void kvm_vcpu_kick(struct kvm_vcpu
*vcpu
);
965 bool kvm_is_reserved_pfn(kvm_pfn_t pfn
);
967 struct kvm_irq_ack_notifier
{
968 struct hlist_node link
;
970 void (*irq_acked
)(struct kvm_irq_ack_notifier
*kian
);
973 int kvm_irq_map_gsi(struct kvm
*kvm
,
974 struct kvm_kernel_irq_routing_entry
*entries
, int gsi
);
975 int kvm_irq_map_chip_pin(struct kvm
*kvm
, unsigned irqchip
, unsigned pin
);
977 int kvm_set_irq(struct kvm
*kvm
, int irq_source_id
, u32 irq
, int level
,
979 int kvm_set_msi(struct kvm_kernel_irq_routing_entry
*irq_entry
, struct kvm
*kvm
,
980 int irq_source_id
, int level
, bool line_status
);
981 int kvm_arch_set_irq_inatomic(struct kvm_kernel_irq_routing_entry
*e
,
982 struct kvm
*kvm
, int irq_source_id
,
983 int level
, bool line_status
);
984 bool kvm_irq_has_notifier(struct kvm
*kvm
, unsigned irqchip
, unsigned pin
);
985 void kvm_notify_acked_gsi(struct kvm
*kvm
, int gsi
);
986 void kvm_notify_acked_irq(struct kvm
*kvm
, unsigned irqchip
, unsigned pin
);
987 void kvm_register_irq_ack_notifier(struct kvm
*kvm
,
988 struct kvm_irq_ack_notifier
*kian
);
989 void kvm_unregister_irq_ack_notifier(struct kvm
*kvm
,
990 struct kvm_irq_ack_notifier
*kian
);
991 int kvm_request_irq_source_id(struct kvm
*kvm
);
992 void kvm_free_irq_source_id(struct kvm
*kvm
, int irq_source_id
);
995 * search_memslots() and __gfn_to_memslot() are here because they are
996 * used in non-modular code in arch/powerpc/kvm/book3s_hv_rm_mmu.c.
997 * gfn_to_memslot() itself isn't here as an inline because that would
998 * bloat other code too much.
1000 static inline struct kvm_memory_slot
*
1001 search_memslots(struct kvm_memslots
*slots
, gfn_t gfn
)
1003 int start
= 0, end
= slots
->used_slots
;
1004 int slot
= atomic_read(&slots
->lru_slot
);
1005 struct kvm_memory_slot
*memslots
= slots
->memslots
;
1007 if (gfn
>= memslots
[slot
].base_gfn
&&
1008 gfn
< memslots
[slot
].base_gfn
+ memslots
[slot
].npages
)
1009 return &memslots
[slot
];
1011 while (start
< end
) {
1012 slot
= start
+ (end
- start
) / 2;
1014 if (gfn
>= memslots
[slot
].base_gfn
)
1020 if (gfn
>= memslots
[start
].base_gfn
&&
1021 gfn
< memslots
[start
].base_gfn
+ memslots
[start
].npages
) {
1022 atomic_set(&slots
->lru_slot
, start
);
1023 return &memslots
[start
];
1029 static inline struct kvm_memory_slot
*
1030 __gfn_to_memslot(struct kvm_memslots
*slots
, gfn_t gfn
)
1032 return search_memslots(slots
, gfn
);
1035 static inline unsigned long
1036 __gfn_to_hva_memslot(struct kvm_memory_slot
*slot
, gfn_t gfn
)
1038 return slot
->userspace_addr
+ (gfn
- slot
->base_gfn
) * PAGE_SIZE
;
1041 static inline int memslot_id(struct kvm
*kvm
, gfn_t gfn
)
1043 return gfn_to_memslot(kvm
, gfn
)->id
;
1047 hva_to_gfn_memslot(unsigned long hva
, struct kvm_memory_slot
*slot
)
1049 gfn_t gfn_offset
= (hva
- slot
->userspace_addr
) >> PAGE_SHIFT
;
1051 return slot
->base_gfn
+ gfn_offset
;
1054 static inline gpa_t
gfn_to_gpa(gfn_t gfn
)
1056 return (gpa_t
)gfn
<< PAGE_SHIFT
;
1059 static inline gfn_t
gpa_to_gfn(gpa_t gpa
)
1061 return (gfn_t
)(gpa
>> PAGE_SHIFT
);
1064 static inline hpa_t
pfn_to_hpa(kvm_pfn_t pfn
)
1066 return (hpa_t
)pfn
<< PAGE_SHIFT
;
1069 static inline struct page
*kvm_vcpu_gpa_to_page(struct kvm_vcpu
*vcpu
,
1072 return kvm_vcpu_gfn_to_page(vcpu
, gpa_to_gfn(gpa
));
1075 static inline bool kvm_is_error_gpa(struct kvm
*kvm
, gpa_t gpa
)
1077 unsigned long hva
= gfn_to_hva(kvm
, gpa_to_gfn(gpa
));
1079 return kvm_is_error_hva(hva
);
1082 enum kvm_stat_kind
{
1087 struct kvm_stat_data
{
1092 struct kvm_stats_debugfs_item
{
1095 enum kvm_stat_kind kind
;
1097 extern struct kvm_stats_debugfs_item debugfs_entries
[];
1098 extern struct dentry
*kvm_debugfs_dir
;
1100 #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER)
1101 static inline int mmu_notifier_retry(struct kvm
*kvm
, unsigned long mmu_seq
)
1103 if (unlikely(kvm
->mmu_notifier_count
))
1106 * Ensure the read of mmu_notifier_count happens before the read
1107 * of mmu_notifier_seq. This interacts with the smp_wmb() in
1108 * mmu_notifier_invalidate_range_end to make sure that the caller
1109 * either sees the old (non-zero) value of mmu_notifier_count or
1110 * the new (incremented) value of mmu_notifier_seq.
1111 * PowerPC Book3s HV KVM calls this under a per-page lock
1112 * rather than under kvm->mmu_lock, for scalability, so
1113 * can't rely on kvm->mmu_lock to keep things ordered.
1116 if (kvm
->mmu_notifier_seq
!= mmu_seq
)
1122 #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING
1124 #define KVM_MAX_IRQ_ROUTES 4096 /* might need extension/rework in the future */
1126 bool kvm_arch_can_set_irq_routing(struct kvm
*kvm
);
1127 int kvm_set_irq_routing(struct kvm
*kvm
,
1128 const struct kvm_irq_routing_entry
*entries
,
1131 int kvm_set_routing_entry(struct kvm
*kvm
,
1132 struct kvm_kernel_irq_routing_entry
*e
,
1133 const struct kvm_irq_routing_entry
*ue
);
1134 void kvm_free_irq_routing(struct kvm
*kvm
);
1138 static inline void kvm_free_irq_routing(struct kvm
*kvm
) {}
1142 int kvm_send_userspace_msi(struct kvm
*kvm
, struct kvm_msi
*msi
);
1144 #ifdef CONFIG_HAVE_KVM_EVENTFD
1146 void kvm_eventfd_init(struct kvm
*kvm
);
1147 int kvm_ioeventfd(struct kvm
*kvm
, struct kvm_ioeventfd
*args
);
1149 #ifdef CONFIG_HAVE_KVM_IRQFD
1150 int kvm_irqfd(struct kvm
*kvm
, struct kvm_irqfd
*args
);
1151 void kvm_irqfd_release(struct kvm
*kvm
);
1152 void kvm_irq_routing_update(struct kvm
*);
1154 static inline int kvm_irqfd(struct kvm
*kvm
, struct kvm_irqfd
*args
)
1159 static inline void kvm_irqfd_release(struct kvm
*kvm
) {}
1164 static inline void kvm_eventfd_init(struct kvm
*kvm
) {}
1166 static inline int kvm_irqfd(struct kvm
*kvm
, struct kvm_irqfd
*args
)
1171 static inline void kvm_irqfd_release(struct kvm
*kvm
) {}
1173 #ifdef CONFIG_HAVE_KVM_IRQCHIP
1174 static inline void kvm_irq_routing_update(struct kvm
*kvm
)
1179 static inline int kvm_ioeventfd(struct kvm
*kvm
, struct kvm_ioeventfd
*args
)
1184 #endif /* CONFIG_HAVE_KVM_EVENTFD */
1186 void kvm_arch_irq_routing_update(struct kvm
*kvm
);
1188 static inline void kvm_make_request(int req
, struct kvm_vcpu
*vcpu
)
1191 * Ensure the rest of the request is published to kvm_check_request's
1192 * caller. Paired with the smp_mb__after_atomic in kvm_check_request.
1195 set_bit(req
& KVM_REQUEST_MASK
, (void *)&vcpu
->requests
);
1198 static inline bool kvm_request_pending(struct kvm_vcpu
*vcpu
)
1200 return READ_ONCE(vcpu
->requests
);
1203 static inline bool kvm_test_request(int req
, struct kvm_vcpu
*vcpu
)
1205 return test_bit(req
& KVM_REQUEST_MASK
, (void *)&vcpu
->requests
);
1208 static inline void kvm_clear_request(int req
, struct kvm_vcpu
*vcpu
)
1210 clear_bit(req
& KVM_REQUEST_MASK
, (void *)&vcpu
->requests
);
1213 static inline bool kvm_check_request(int req
, struct kvm_vcpu
*vcpu
)
1215 if (kvm_test_request(req
, vcpu
)) {
1216 kvm_clear_request(req
, vcpu
);
1219 * Ensure the rest of the request is visible to kvm_check_request's
1220 * caller. Paired with the smp_wmb in kvm_make_request.
1222 smp_mb__after_atomic();
1229 extern bool kvm_rebooting
;
1231 extern unsigned int halt_poll_ns
;
1232 extern unsigned int halt_poll_ns_grow
;
1233 extern unsigned int halt_poll_ns_grow_start
;
1234 extern unsigned int halt_poll_ns_shrink
;
1237 struct kvm_device_ops
*ops
;
1240 struct list_head vm_node
;
1243 /* create, destroy, and name are mandatory */
1244 struct kvm_device_ops
{
1248 * create is called holding kvm->lock and any operations not suitable
1249 * to do while holding the lock should be deferred to init (see
1252 int (*create
)(struct kvm_device
*dev
, u32 type
);
1255 * init is called after create if create is successful and is called
1256 * outside of holding kvm->lock.
1258 void (*init
)(struct kvm_device
*dev
);
1261 * Destroy is responsible for freeing dev.
1263 * Destroy may be called before or after destructors are called
1264 * on emulated I/O regions, depending on whether a reference is
1265 * held by a vcpu or other kvm component that gets destroyed
1266 * after the emulated I/O.
1268 void (*destroy
)(struct kvm_device
*dev
);
1271 * Release is an alternative method to free the device. It is
1272 * called when the device file descriptor is closed. Once
1273 * release is called, the destroy method will not be called
1274 * anymore as the device is removed from the device list of
1275 * the VM. kvm->lock is held.
1277 void (*release
)(struct kvm_device
*dev
);
1279 int (*set_attr
)(struct kvm_device
*dev
, struct kvm_device_attr
*attr
);
1280 int (*get_attr
)(struct kvm_device
*dev
, struct kvm_device_attr
*attr
);
1281 int (*has_attr
)(struct kvm_device
*dev
, struct kvm_device_attr
*attr
);
1282 long (*ioctl
)(struct kvm_device
*dev
, unsigned int ioctl
,
1284 int (*mmap
)(struct kvm_device
*dev
, struct vm_area_struct
*vma
);
1287 void kvm_device_get(struct kvm_device
*dev
);
1288 void kvm_device_put(struct kvm_device
*dev
);
1289 struct kvm_device
*kvm_device_from_filp(struct file
*filp
);
1290 int kvm_register_device_ops(struct kvm_device_ops
*ops
, u32 type
);
1291 void kvm_unregister_device_ops(u32 type
);
1293 extern struct kvm_device_ops kvm_mpic_ops
;
1294 extern struct kvm_device_ops kvm_arm_vgic_v2_ops
;
1295 extern struct kvm_device_ops kvm_arm_vgic_v3_ops
;
1297 #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT
1299 static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu
*vcpu
, bool val
)
1301 vcpu
->spin_loop
.in_spin_loop
= val
;
1303 static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu
*vcpu
, bool val
)
1305 vcpu
->spin_loop
.dy_eligible
= val
;
1308 #else /* !CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */
1310 static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu
*vcpu
, bool val
)
1314 static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu
*vcpu
, bool val
)
1317 #endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */
1319 #ifdef CONFIG_HAVE_KVM_IRQ_BYPASS
1320 bool kvm_arch_has_irq_bypass(void);
1321 int kvm_arch_irq_bypass_add_producer(struct irq_bypass_consumer
*,
1322 struct irq_bypass_producer
*);
1323 void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer
*,
1324 struct irq_bypass_producer
*);
1325 void kvm_arch_irq_bypass_stop(struct irq_bypass_consumer
*);
1326 void kvm_arch_irq_bypass_start(struct irq_bypass_consumer
*);
1327 int kvm_arch_update_irqfd_routing(struct kvm
*kvm
, unsigned int host_irq
,
1328 uint32_t guest_irq
, bool set
);
1329 #endif /* CONFIG_HAVE_KVM_IRQ_BYPASS */
1331 #ifdef CONFIG_HAVE_KVM_INVALID_WAKEUPS
1332 /* If we wakeup during the poll time, was it a sucessful poll? */
1333 static inline bool vcpu_valid_wakeup(struct kvm_vcpu
*vcpu
)
1335 return vcpu
->valid_wakeup
;
1339 static inline bool vcpu_valid_wakeup(struct kvm_vcpu
*vcpu
)
1343 #endif /* CONFIG_HAVE_KVM_INVALID_WAKEUPS */
1345 #ifdef CONFIG_HAVE_KVM_NO_POLL
1346 /* Callback that tells if we must not poll */
1347 bool kvm_arch_no_poll(struct kvm_vcpu
*vcpu
);
1349 static inline bool kvm_arch_no_poll(struct kvm_vcpu
*vcpu
)
1353 #endif /* CONFIG_HAVE_KVM_NO_POLL */
1355 #ifdef CONFIG_HAVE_KVM_VCPU_ASYNC_IOCTL
1356 long kvm_arch_vcpu_async_ioctl(struct file
*filp
,
1357 unsigned int ioctl
, unsigned long arg
);
1359 static inline long kvm_arch_vcpu_async_ioctl(struct file
*filp
,
1363 return -ENOIOCTLCMD
;
1365 #endif /* CONFIG_HAVE_KVM_VCPU_ASYNC_IOCTL */
1367 int kvm_arch_mmu_notifier_invalidate_range(struct kvm
*kvm
,
1368 unsigned long start
, unsigned long end
, bool blockable
);
1370 #ifdef CONFIG_HAVE_KVM_VCPU_RUN_PID_CHANGE
1371 int kvm_arch_vcpu_run_pid_change(struct kvm_vcpu
*vcpu
);
1373 static inline int kvm_arch_vcpu_run_pid_change(struct kvm_vcpu
*vcpu
)
1377 #endif /* CONFIG_HAVE_KVM_VCPU_RUN_PID_CHANGE */