5 * This work is licensed under the terms of the GNU GPL, version 2. See
6 * the COPYING file in the top-level directory.
9 #include <linux/types.h>
10 #include <linux/hardirq.h>
11 #include <linux/list.h>
12 #include <linux/mutex.h>
13 #include <linux/spinlock.h>
14 #include <linux/signal.h>
15 #include <linux/sched.h>
17 #include <linux/preempt.h>
18 #include <linux/msi.h>
19 #include <linux/slab.h>
20 #include <linux/rcupdate.h>
21 #include <asm/signal.h>
23 #include <linux/kvm.h>
24 #include <linux/kvm_para.h>
26 #include <linux/kvm_types.h>
28 #include <asm/kvm_host.h>
31 * vcpu->requests bit members
33 #define KVM_REQ_TLB_FLUSH 0
34 #define KVM_REQ_MIGRATE_TIMER 1
35 #define KVM_REQ_REPORT_TPR_ACCESS 2
36 #define KVM_REQ_MMU_RELOAD 3
37 #define KVM_REQ_TRIPLE_FAULT 4
38 #define KVM_REQ_PENDING_TIMER 5
39 #define KVM_REQ_UNHALT 6
40 #define KVM_REQ_MMU_SYNC 7
41 #define KVM_REQ_CLOCK_UPDATE 8
42 #define KVM_REQ_KICK 9
43 #define KVM_REQ_DEACTIVATE_FPU 10
44 #define KVM_REQ_EVENT 11
45 #define KVM_REQ_APF_HALT 12
47 #define KVM_USERSPACE_IRQ_SOURCE_ID 0
51 extern struct kmem_cache
*kvm_vcpu_cache
;
54 * It would be nice to use something smarter than a linear search, TBD...
55 * Thankfully we dont expect many devices to register (famous last words :),
56 * so until then it will suffice. At least its abstracted so we can change
61 #define NR_IOBUS_DEVS 200
62 struct kvm_io_device
*devs
[NR_IOBUS_DEVS
];
71 int kvm_io_bus_write(struct kvm
*kvm
, enum kvm_bus bus_idx
, gpa_t addr
,
72 int len
, const void *val
);
73 int kvm_io_bus_read(struct kvm
*kvm
, enum kvm_bus bus_idx
, gpa_t addr
, int len
,
75 int kvm_io_bus_register_dev(struct kvm
*kvm
, enum kvm_bus bus_idx
,
76 struct kvm_io_device
*dev
);
77 int kvm_io_bus_unregister_dev(struct kvm
*kvm
, enum kvm_bus bus_idx
,
78 struct kvm_io_device
*dev
);
80 #ifdef CONFIG_KVM_ASYNC_PF
82 struct work_struct work
;
83 struct list_head link
;
84 struct list_head queue
;
85 struct kvm_vcpu
*vcpu
;
89 struct kvm_arch_async_pf arch
;
94 void kvm_clear_async_pf_completion_queue(struct kvm_vcpu
*vcpu
);
95 void kvm_check_async_pf_completion(struct kvm_vcpu
*vcpu
);
96 int kvm_setup_async_pf(struct kvm_vcpu
*vcpu
, gva_t gva
, gfn_t gfn
,
97 struct kvm_arch_async_pf
*arch
);
98 int kvm_async_pf_wakeup_all(struct kvm_vcpu
*vcpu
);
109 #ifdef CONFIG_PREEMPT_NOTIFIERS
110 struct preempt_notifier preempt_notifier
;
116 unsigned long requests
;
117 unsigned long guest_debug
;
123 int guest_fpu_loaded
, guest_xcr0_loaded
;
124 wait_queue_head_t wq
;
128 struct kvm_vcpu_stat stat
;
130 #ifdef CONFIG_HAS_IOMEM
132 int mmio_read_completed
;
135 unsigned char mmio_data
[8];
136 gpa_t mmio_phys_addr
;
139 #ifdef CONFIG_KVM_ASYNC_PF
142 struct list_head queue
;
143 struct list_head done
;
148 struct kvm_vcpu_arch arch
;
151 static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu
*vcpu
)
153 return cmpxchg(&vcpu
->mode
, IN_GUEST_MODE
, EXITING_GUEST_MODE
);
157 * Some of the bitops functions do not support too long bitmaps.
158 * This number must be determined not to exceed such limits.
160 #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1)
162 struct kvm_lpage_info
{
163 unsigned long rmap_pde
;
167 struct kvm_memory_slot
{
169 unsigned long npages
;
172 unsigned long *dirty_bitmap
;
173 unsigned long *dirty_bitmap_head
;
174 struct kvm_lpage_info
*lpage_info
[KVM_NR_PAGE_SIZES
- 1];
175 unsigned long userspace_addr
;
180 static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot
*memslot
)
182 return ALIGN(memslot
->npages
, BITS_PER_LONG
) / 8;
185 struct kvm_kernel_irq_routing_entry
{
188 int (*set
)(struct kvm_kernel_irq_routing_entry
*e
,
189 struct kvm
*kvm
, int irq_source_id
, int level
);
197 struct hlist_node link
;
200 #ifdef __KVM_HAVE_IOAPIC
202 struct kvm_irq_routing_table
{
203 int chip
[KVM_NR_IRQCHIPS
][KVM_IOAPIC_NUM_PINS
];
204 struct kvm_kernel_irq_routing_entry
*rt_entries
;
207 * Array indexed by gsi. Each entry contains list of irq chips
208 * the gsi is connected to.
210 struct hlist_head map
[0];
215 struct kvm_irq_routing_table
{};
219 struct kvm_memslots
{
222 struct kvm_memory_slot memslots
[KVM_MEMORY_SLOTS
+
223 KVM_PRIVATE_MEM_SLOTS
];
228 struct mutex slots_lock
;
229 struct mm_struct
*mm
; /* userspace tied to this vm */
230 struct kvm_memslots
*memslots
;
231 struct srcu_struct srcu
;
232 #ifdef CONFIG_KVM_APIC_ARCHITECTURE
234 struct kvm_vcpu
*bsp_vcpu
;
236 struct kvm_vcpu
*vcpus
[KVM_MAX_VCPUS
];
237 atomic_t online_vcpus
;
238 struct list_head vm_list
;
240 struct kvm_io_bus
*buses
[KVM_NR_BUSES
];
241 #ifdef CONFIG_HAVE_KVM_EVENTFD
244 struct list_head items
;
246 struct list_head ioeventfds
;
248 struct kvm_vm_stat stat
;
249 struct kvm_arch arch
;
250 atomic_t users_count
;
251 #ifdef KVM_COALESCED_MMIO_PAGE_OFFSET
252 struct kvm_coalesced_mmio_dev
*coalesced_mmio_dev
;
253 struct kvm_coalesced_mmio_ring
*coalesced_mmio_ring
;
256 struct mutex irq_lock
;
257 #ifdef CONFIG_HAVE_KVM_IRQCHIP
259 * Update side is protected by irq_lock and,
260 * if configured, irqfds.lock.
262 struct kvm_irq_routing_table __rcu
*irq_routing
;
263 struct hlist_head mask_notifier_list
;
264 struct hlist_head irq_ack_notifier_list
;
267 #ifdef KVM_ARCH_WANT_MMU_NOTIFIER
268 struct mmu_notifier mmu_notifier
;
269 unsigned long mmu_notifier_seq
;
270 long mmu_notifier_count
;
275 /* The guest did something we don't support. */
276 #define pr_unimpl(vcpu, fmt, ...) \
278 if (printk_ratelimit()) \
279 printk(KERN_ERR "kvm: %i: cpu%i " fmt, \
280 current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \
283 #define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
284 #define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
286 static inline struct kvm_vcpu
*kvm_get_vcpu(struct kvm
*kvm
, int i
)
289 return kvm
->vcpus
[i
];
292 #define kvm_for_each_vcpu(idx, vcpup, kvm) \
293 for (idx = 0, vcpup = kvm_get_vcpu(kvm, idx); \
294 idx < atomic_read(&kvm->online_vcpus) && vcpup; \
295 vcpup = kvm_get_vcpu(kvm, ++idx))
297 int kvm_vcpu_init(struct kvm_vcpu
*vcpu
, struct kvm
*kvm
, unsigned id
);
298 void kvm_vcpu_uninit(struct kvm_vcpu
*vcpu
);
300 void vcpu_load(struct kvm_vcpu
*vcpu
);
301 void vcpu_put(struct kvm_vcpu
*vcpu
);
303 int kvm_init(void *opaque
, unsigned vcpu_size
, unsigned vcpu_align
,
304 struct module
*module
);
307 void kvm_get_kvm(struct kvm
*kvm
);
308 void kvm_put_kvm(struct kvm
*kvm
);
310 static inline struct kvm_memslots
*kvm_memslots(struct kvm
*kvm
)
312 return rcu_dereference_check(kvm
->memslots
,
313 srcu_read_lock_held(&kvm
->srcu
)
314 || lockdep_is_held(&kvm
->slots_lock
));
317 #define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
318 #define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
319 static inline int is_error_hpa(hpa_t hpa
) { return hpa
>> HPA_MSB
; }
321 extern struct page
*bad_page
;
322 extern pfn_t bad_pfn
;
324 int is_error_page(struct page
*page
);
325 int is_error_pfn(pfn_t pfn
);
326 int is_hwpoison_pfn(pfn_t pfn
);
327 int is_fault_pfn(pfn_t pfn
);
328 int kvm_is_error_hva(unsigned long addr
);
329 int kvm_set_memory_region(struct kvm
*kvm
,
330 struct kvm_userspace_memory_region
*mem
,
332 int __kvm_set_memory_region(struct kvm
*kvm
,
333 struct kvm_userspace_memory_region
*mem
,
335 int kvm_arch_prepare_memory_region(struct kvm
*kvm
,
336 struct kvm_memory_slot
*memslot
,
337 struct kvm_memory_slot old
,
338 struct kvm_userspace_memory_region
*mem
,
340 void kvm_arch_commit_memory_region(struct kvm
*kvm
,
341 struct kvm_userspace_memory_region
*mem
,
342 struct kvm_memory_slot old
,
344 void kvm_disable_largepages(void);
345 void kvm_arch_flush_shadow(struct kvm
*kvm
);
347 int gfn_to_page_many_atomic(struct kvm
*kvm
, gfn_t gfn
, struct page
**pages
,
350 struct page
*gfn_to_page(struct kvm
*kvm
, gfn_t gfn
);
351 unsigned long gfn_to_hva(struct kvm
*kvm
, gfn_t gfn
);
352 void kvm_release_page_clean(struct page
*page
);
353 void kvm_release_page_dirty(struct page
*page
);
354 void kvm_set_page_dirty(struct page
*page
);
355 void kvm_set_page_accessed(struct page
*page
);
357 pfn_t
hva_to_pfn_atomic(struct kvm
*kvm
, unsigned long addr
);
358 pfn_t
gfn_to_pfn_atomic(struct kvm
*kvm
, gfn_t gfn
);
359 pfn_t
gfn_to_pfn_async(struct kvm
*kvm
, gfn_t gfn
, bool *async
,
360 bool write_fault
, bool *writable
);
361 pfn_t
gfn_to_pfn(struct kvm
*kvm
, gfn_t gfn
);
362 pfn_t
gfn_to_pfn_prot(struct kvm
*kvm
, gfn_t gfn
, bool write_fault
,
364 pfn_t
gfn_to_pfn_memslot(struct kvm
*kvm
,
365 struct kvm_memory_slot
*slot
, gfn_t gfn
);
366 int memslot_id(struct kvm
*kvm
, gfn_t gfn
);
367 void kvm_release_pfn_dirty(pfn_t
);
368 void kvm_release_pfn_clean(pfn_t pfn
);
369 void kvm_set_pfn_dirty(pfn_t pfn
);
370 void kvm_set_pfn_accessed(pfn_t pfn
);
371 void kvm_get_pfn(pfn_t pfn
);
373 int kvm_read_guest_page(struct kvm
*kvm
, gfn_t gfn
, void *data
, int offset
,
375 int kvm_read_guest_atomic(struct kvm
*kvm
, gpa_t gpa
, void *data
,
377 int kvm_read_guest(struct kvm
*kvm
, gpa_t gpa
, void *data
, unsigned long len
);
378 int kvm_write_guest_page(struct kvm
*kvm
, gfn_t gfn
, const void *data
,
379 int offset
, int len
);
380 int kvm_write_guest(struct kvm
*kvm
, gpa_t gpa
, const void *data
,
382 int kvm_write_guest_cached(struct kvm
*kvm
, struct gfn_to_hva_cache
*ghc
,
383 void *data
, unsigned long len
);
384 int kvm_gfn_to_hva_cache_init(struct kvm
*kvm
, struct gfn_to_hva_cache
*ghc
,
386 int kvm_clear_guest_page(struct kvm
*kvm
, gfn_t gfn
, int offset
, int len
);
387 int kvm_clear_guest(struct kvm
*kvm
, gpa_t gpa
, unsigned long len
);
388 struct kvm_memory_slot
*gfn_to_memslot(struct kvm
*kvm
, gfn_t gfn
);
389 int kvm_is_visible_gfn(struct kvm
*kvm
, gfn_t gfn
);
390 unsigned long kvm_host_page_size(struct kvm
*kvm
, gfn_t gfn
);
391 void mark_page_dirty(struct kvm
*kvm
, gfn_t gfn
);
392 void mark_page_dirty_in_slot(struct kvm
*kvm
, struct kvm_memory_slot
*memslot
,
395 void kvm_vcpu_block(struct kvm_vcpu
*vcpu
);
396 void kvm_vcpu_on_spin(struct kvm_vcpu
*vcpu
);
397 void kvm_resched(struct kvm_vcpu
*vcpu
);
398 void kvm_load_guest_fpu(struct kvm_vcpu
*vcpu
);
399 void kvm_put_guest_fpu(struct kvm_vcpu
*vcpu
);
401 void kvm_flush_remote_tlbs(struct kvm
*kvm
);
402 void kvm_reload_remote_mmus(struct kvm
*kvm
);
404 long kvm_arch_dev_ioctl(struct file
*filp
,
405 unsigned int ioctl
, unsigned long arg
);
406 long kvm_arch_vcpu_ioctl(struct file
*filp
,
407 unsigned int ioctl
, unsigned long arg
);
409 int kvm_dev_ioctl_check_extension(long ext
);
411 int kvm_get_dirty_log(struct kvm
*kvm
,
412 struct kvm_dirty_log
*log
, int *is_dirty
);
413 int kvm_vm_ioctl_get_dirty_log(struct kvm
*kvm
,
414 struct kvm_dirty_log
*log
);
416 int kvm_vm_ioctl_set_memory_region(struct kvm
*kvm
,
418 kvm_userspace_memory_region
*mem
,
420 long kvm_arch_vm_ioctl(struct file
*filp
,
421 unsigned int ioctl
, unsigned long arg
);
423 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu
*vcpu
, struct kvm_fpu
*fpu
);
424 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu
*vcpu
, struct kvm_fpu
*fpu
);
426 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu
*vcpu
,
427 struct kvm_translation
*tr
);
429 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu
*vcpu
, struct kvm_regs
*regs
);
430 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu
*vcpu
, struct kvm_regs
*regs
);
431 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu
*vcpu
,
432 struct kvm_sregs
*sregs
);
433 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu
*vcpu
,
434 struct kvm_sregs
*sregs
);
435 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu
*vcpu
,
436 struct kvm_mp_state
*mp_state
);
437 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu
*vcpu
,
438 struct kvm_mp_state
*mp_state
);
439 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu
*vcpu
,
440 struct kvm_guest_debug
*dbg
);
441 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
);
443 int kvm_arch_init(void *opaque
);
444 void kvm_arch_exit(void);
446 int kvm_arch_vcpu_init(struct kvm_vcpu
*vcpu
);
447 void kvm_arch_vcpu_uninit(struct kvm_vcpu
*vcpu
);
449 void kvm_arch_vcpu_free(struct kvm_vcpu
*vcpu
);
450 void kvm_arch_vcpu_load(struct kvm_vcpu
*vcpu
, int cpu
);
451 void kvm_arch_vcpu_put(struct kvm_vcpu
*vcpu
);
452 struct kvm_vcpu
*kvm_arch_vcpu_create(struct kvm
*kvm
, unsigned int id
);
453 int kvm_arch_vcpu_setup(struct kvm_vcpu
*vcpu
);
454 void kvm_arch_vcpu_destroy(struct kvm_vcpu
*vcpu
);
456 int kvm_arch_vcpu_reset(struct kvm_vcpu
*vcpu
);
457 int kvm_arch_hardware_enable(void *garbage
);
458 void kvm_arch_hardware_disable(void *garbage
);
459 int kvm_arch_hardware_setup(void);
460 void kvm_arch_hardware_unsetup(void);
461 void kvm_arch_check_processor_compat(void *rtn
);
462 int kvm_arch_vcpu_runnable(struct kvm_vcpu
*vcpu
);
464 void kvm_free_physmem(struct kvm
*kvm
);
466 #ifndef __KVM_HAVE_ARCH_VM_ALLOC
467 static inline struct kvm
*kvm_arch_alloc_vm(void)
469 return kzalloc(sizeof(struct kvm
), GFP_KERNEL
);
472 static inline void kvm_arch_free_vm(struct kvm
*kvm
)
478 int kvm_arch_init_vm(struct kvm
*kvm
);
479 void kvm_arch_destroy_vm(struct kvm
*kvm
);
480 void kvm_free_all_assigned_devices(struct kvm
*kvm
);
481 void kvm_arch_sync_events(struct kvm
*kvm
);
483 int kvm_cpu_has_pending_timer(struct kvm_vcpu
*vcpu
);
484 void kvm_vcpu_kick(struct kvm_vcpu
*vcpu
);
486 int kvm_is_mmio_pfn(pfn_t pfn
);
488 struct kvm_irq_ack_notifier
{
489 struct hlist_node link
;
491 void (*irq_acked
)(struct kvm_irq_ack_notifier
*kian
);
494 struct kvm_assigned_dev_kernel
{
495 struct kvm_irq_ack_notifier ack_notifier
;
496 struct list_head list
;
501 unsigned int entries_nr
;
503 bool host_irq_disabled
;
504 struct msix_entry
*host_msix_entries
;
506 struct msix_entry
*guest_msix_entries
;
507 unsigned long irq_requested_type
;
512 spinlock_t intx_lock
;
516 struct kvm_irq_mask_notifier
{
517 void (*func
)(struct kvm_irq_mask_notifier
*kimn
, bool masked
);
519 struct hlist_node link
;
522 void kvm_register_irq_mask_notifier(struct kvm
*kvm
, int irq
,
523 struct kvm_irq_mask_notifier
*kimn
);
524 void kvm_unregister_irq_mask_notifier(struct kvm
*kvm
, int irq
,
525 struct kvm_irq_mask_notifier
*kimn
);
526 void kvm_fire_mask_notifiers(struct kvm
*kvm
, unsigned irqchip
, unsigned pin
,
529 #ifdef __KVM_HAVE_IOAPIC
530 void kvm_get_intr_delivery_bitmask(struct kvm_ioapic
*ioapic
,
531 union kvm_ioapic_redirect_entry
*entry
,
532 unsigned long *deliver_bitmask
);
534 int kvm_set_irq(struct kvm
*kvm
, int irq_source_id
, u32 irq
, int level
);
535 int kvm_set_msi(struct kvm_kernel_irq_routing_entry
*irq_entry
, struct kvm
*kvm
,
536 int irq_source_id
, int level
);
537 void kvm_notify_acked_irq(struct kvm
*kvm
, unsigned irqchip
, unsigned pin
);
538 void kvm_register_irq_ack_notifier(struct kvm
*kvm
,
539 struct kvm_irq_ack_notifier
*kian
);
540 void kvm_unregister_irq_ack_notifier(struct kvm
*kvm
,
541 struct kvm_irq_ack_notifier
*kian
);
542 int kvm_request_irq_source_id(struct kvm
*kvm
);
543 void kvm_free_irq_source_id(struct kvm
*kvm
, int irq_source_id
);
545 /* For vcpu->arch.iommu_flags */
546 #define KVM_IOMMU_CACHE_COHERENCY 0x1
548 #ifdef CONFIG_IOMMU_API
549 int kvm_iommu_map_pages(struct kvm
*kvm
, struct kvm_memory_slot
*slot
);
550 int kvm_iommu_map_guest(struct kvm
*kvm
);
551 int kvm_iommu_unmap_guest(struct kvm
*kvm
);
552 int kvm_assign_device(struct kvm
*kvm
,
553 struct kvm_assigned_dev_kernel
*assigned_dev
);
554 int kvm_deassign_device(struct kvm
*kvm
,
555 struct kvm_assigned_dev_kernel
*assigned_dev
);
556 #else /* CONFIG_IOMMU_API */
557 static inline int kvm_iommu_map_pages(struct kvm
*kvm
,
558 struct kvm_memory_slot
*slot
)
563 static inline int kvm_iommu_map_guest(struct kvm
*kvm
)
568 static inline int kvm_iommu_unmap_guest(struct kvm
*kvm
)
573 static inline int kvm_assign_device(struct kvm
*kvm
,
574 struct kvm_assigned_dev_kernel
*assigned_dev
)
579 static inline int kvm_deassign_device(struct kvm
*kvm
,
580 struct kvm_assigned_dev_kernel
*assigned_dev
)
584 #endif /* CONFIG_IOMMU_API */
586 static inline void kvm_guest_enter(void)
588 account_system_vtime(current
);
589 current
->flags
|= PF_VCPU
;
592 static inline void kvm_guest_exit(void)
594 account_system_vtime(current
);
595 current
->flags
&= ~PF_VCPU
;
598 static inline unsigned long gfn_to_hva_memslot(struct kvm_memory_slot
*slot
,
601 return slot
->userspace_addr
+ (gfn
- slot
->base_gfn
) * PAGE_SIZE
;
604 static inline gpa_t
gfn_to_gpa(gfn_t gfn
)
606 return (gpa_t
)gfn
<< PAGE_SHIFT
;
609 static inline gfn_t
gpa_to_gfn(gpa_t gpa
)
611 return (gfn_t
)(gpa
>> PAGE_SHIFT
);
614 static inline hpa_t
pfn_to_hpa(pfn_t pfn
)
616 return (hpa_t
)pfn
<< PAGE_SHIFT
;
619 static inline void kvm_migrate_timers(struct kvm_vcpu
*vcpu
)
621 set_bit(KVM_REQ_MIGRATE_TIMER
, &vcpu
->requests
);
629 struct kvm_stats_debugfs_item
{
632 enum kvm_stat_kind kind
;
633 struct dentry
*dentry
;
635 extern struct kvm_stats_debugfs_item debugfs_entries
[];
636 extern struct dentry
*kvm_debugfs_dir
;
638 #ifdef KVM_ARCH_WANT_MMU_NOTIFIER
639 static inline int mmu_notifier_retry(struct kvm_vcpu
*vcpu
, unsigned long mmu_seq
)
641 if (unlikely(vcpu
->kvm
->mmu_notifier_count
))
644 * Both reads happen under the mmu_lock and both values are
645 * modified under mmu_lock, so there's no need of smb_rmb()
646 * here in between, otherwise mmu_notifier_count should be
647 * read before mmu_notifier_seq, see
648 * mmu_notifier_invalidate_range_end write side.
650 if (vcpu
->kvm
->mmu_notifier_seq
!= mmu_seq
)
656 #ifdef CONFIG_HAVE_KVM_IRQCHIP
658 #define KVM_MAX_IRQ_ROUTES 1024
660 int kvm_setup_default_irq_routing(struct kvm
*kvm
);
661 int kvm_set_irq_routing(struct kvm
*kvm
,
662 const struct kvm_irq_routing_entry
*entries
,
665 void kvm_free_irq_routing(struct kvm
*kvm
);
669 static inline void kvm_free_irq_routing(struct kvm
*kvm
) {}
673 #ifdef CONFIG_HAVE_KVM_EVENTFD
675 void kvm_eventfd_init(struct kvm
*kvm
);
676 int kvm_irqfd(struct kvm
*kvm
, int fd
, int gsi
, int flags
);
677 void kvm_irqfd_release(struct kvm
*kvm
);
678 void kvm_irq_routing_update(struct kvm
*, struct kvm_irq_routing_table
*);
679 int kvm_ioeventfd(struct kvm
*kvm
, struct kvm_ioeventfd
*args
);
683 static inline void kvm_eventfd_init(struct kvm
*kvm
) {}
685 static inline int kvm_irqfd(struct kvm
*kvm
, int fd
, int gsi
, int flags
)
690 static inline void kvm_irqfd_release(struct kvm
*kvm
) {}
692 #ifdef CONFIG_HAVE_KVM_IRQCHIP
693 static inline void kvm_irq_routing_update(struct kvm
*kvm
,
694 struct kvm_irq_routing_table
*irq_rt
)
696 rcu_assign_pointer(kvm
->irq_routing
, irq_rt
);
700 static inline int kvm_ioeventfd(struct kvm
*kvm
, struct kvm_ioeventfd
*args
)
705 #endif /* CONFIG_HAVE_KVM_EVENTFD */
707 #ifdef CONFIG_KVM_APIC_ARCHITECTURE
708 static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu
*vcpu
)
710 return vcpu
->kvm
->bsp_vcpu_id
== vcpu
->vcpu_id
;
714 #ifdef __KVM_HAVE_DEVICE_ASSIGNMENT
716 long kvm_vm_ioctl_assigned_device(struct kvm
*kvm
, unsigned ioctl
,
721 static inline long kvm_vm_ioctl_assigned_device(struct kvm
*kvm
, unsigned ioctl
,
729 static inline void kvm_make_request(int req
, struct kvm_vcpu
*vcpu
)
731 set_bit(req
, &vcpu
->requests
);
734 static inline bool kvm_check_request(int req
, struct kvm_vcpu
*vcpu
)
736 if (test_bit(req
, &vcpu
->requests
)) {
737 clear_bit(req
, &vcpu
->requests
);