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 <linux/ratelimit.h>
22 #include <asm/signal.h>
24 #include <linux/kvm.h>
25 #include <linux/kvm_para.h>
27 #include <linux/kvm_types.h>
29 #include <asm/kvm_host.h>
32 #define KVM_MMIO_SIZE 8
36 * vcpu->requests bit members
38 #define KVM_REQ_TLB_FLUSH 0
39 #define KVM_REQ_MIGRATE_TIMER 1
40 #define KVM_REQ_REPORT_TPR_ACCESS 2
41 #define KVM_REQ_MMU_RELOAD 3
42 #define KVM_REQ_TRIPLE_FAULT 4
43 #define KVM_REQ_PENDING_TIMER 5
44 #define KVM_REQ_UNHALT 6
45 #define KVM_REQ_MMU_SYNC 7
46 #define KVM_REQ_CLOCK_UPDATE 8
47 #define KVM_REQ_KICK 9
48 #define KVM_REQ_DEACTIVATE_FPU 10
49 #define KVM_REQ_EVENT 11
50 #define KVM_REQ_APF_HALT 12
51 #define KVM_REQ_STEAL_UPDATE 13
52 #define KVM_REQ_NMI 14
54 #define KVM_USERSPACE_IRQ_SOURCE_ID 0
58 extern struct kmem_cache *kvm_vcpu_cache;
63 struct kvm_io_device *dev;
68 #define NR_IOBUS_DEVS 300
69 struct kvm_io_range range[NR_IOBUS_DEVS];
78 int kvm_io_bus_write(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr,
79 int len, const void *val);
80 int kvm_io_bus_read(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, int len,
82 int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr,
83 int len, struct kvm_io_device *dev);
84 int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx,
85 struct kvm_io_device *dev);
87 #ifdef CONFIG_KVM_ASYNC_PF
89 struct work_struct work;
90 struct list_head link;
91 struct list_head queue;
92 struct kvm_vcpu *vcpu;
96 struct kvm_arch_async_pf arch;
100 void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu);
101 void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu);
102 int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, gfn_t gfn,
103 struct kvm_arch_async_pf *arch);
104 int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu);
115 #ifdef CONFIG_PREEMPT_NOTIFIERS
116 struct preempt_notifier preempt_notifier;
122 unsigned long requests;
123 unsigned long guest_debug;
129 int guest_fpu_loaded, guest_xcr0_loaded;
130 wait_queue_head_t wq;
134 struct kvm_vcpu_stat stat;
136 #ifdef CONFIG_HAS_IOMEM
138 int mmio_read_completed;
142 unsigned char mmio_data[KVM_MMIO_SIZE];
143 gpa_t mmio_phys_addr;
146 #ifdef CONFIG_KVM_ASYNC_PF
149 struct list_head queue;
150 struct list_head done;
155 struct kvm_vcpu_arch arch;
158 static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu)
160 return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE);
164 * Some of the bitops functions do not support too long bitmaps.
165 * This number must be determined not to exceed such limits.
167 #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1)
169 struct kvm_lpage_info {
170 unsigned long rmap_pde;
174 struct kvm_memory_slot {
176 unsigned long npages;
179 unsigned long *dirty_bitmap;
180 unsigned long *dirty_bitmap_head;
181 struct kvm_lpage_info *lpage_info[KVM_NR_PAGE_SIZES - 1];
182 unsigned long userspace_addr;
187 static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot)
189 return ALIGN(memslot->npages, BITS_PER_LONG) / 8;
192 struct kvm_kernel_irq_routing_entry {
195 int (*set)(struct kvm_kernel_irq_routing_entry *e,
196 struct kvm *kvm, int irq_source_id, int level);
204 struct hlist_node link;
207 #ifdef __KVM_HAVE_IOAPIC
209 struct kvm_irq_routing_table {
210 int chip[KVM_NR_IRQCHIPS][KVM_IOAPIC_NUM_PINS];
211 struct kvm_kernel_irq_routing_entry *rt_entries;
214 * Array indexed by gsi. Each entry contains list of irq chips
215 * the gsi is connected to.
217 struct hlist_head map[0];
222 struct kvm_irq_routing_table {};
226 struct kvm_memslots {
229 struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS +
230 KVM_PRIVATE_MEM_SLOTS];
235 struct mutex slots_lock;
236 struct mm_struct *mm; /* userspace tied to this vm */
237 struct kvm_memslots *memslots;
238 struct srcu_struct srcu;
239 #ifdef CONFIG_KVM_APIC_ARCHITECTURE
241 struct kvm_vcpu *bsp_vcpu;
243 struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
244 atomic_t online_vcpus;
245 int last_boosted_vcpu;
246 struct list_head vm_list;
248 struct kvm_io_bus *buses[KVM_NR_BUSES];
249 #ifdef CONFIG_HAVE_KVM_EVENTFD
252 struct list_head items;
254 struct list_head ioeventfds;
256 struct kvm_vm_stat stat;
257 struct kvm_arch arch;
258 atomic_t users_count;
259 #ifdef KVM_COALESCED_MMIO_PAGE_OFFSET
260 struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
261 spinlock_t ring_lock;
262 struct list_head coalesced_zones;
265 struct mutex irq_lock;
266 #ifdef CONFIG_HAVE_KVM_IRQCHIP
268 * Update side is protected by irq_lock and,
269 * if configured, irqfds.lock.
271 struct kvm_irq_routing_table __rcu *irq_routing;
272 struct hlist_head mask_notifier_list;
273 struct hlist_head irq_ack_notifier_list;
276 #ifdef KVM_ARCH_WANT_MMU_NOTIFIER
277 struct mmu_notifier mmu_notifier;
278 unsigned long mmu_notifier_seq;
279 long mmu_notifier_count;
284 /* The guest did something we don't support. */
285 #define pr_unimpl(vcpu, fmt, ...) \
286 pr_err_ratelimited("kvm: %i: cpu%i " fmt, \
287 current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__)
289 #define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
290 #define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
292 static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i)
295 return kvm->vcpus[i];
298 #define kvm_for_each_vcpu(idx, vcpup, kvm) \
300 idx < atomic_read(&kvm->online_vcpus) && \
301 (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \
304 int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id);
305 void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
307 void vcpu_load(struct kvm_vcpu *vcpu);
308 void vcpu_put(struct kvm_vcpu *vcpu);
310 int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align,
311 struct module *module);
314 void kvm_get_kvm(struct kvm *kvm);
315 void kvm_put_kvm(struct kvm *kvm);
317 static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm)
319 return rcu_dereference_check(kvm->memslots,
320 srcu_read_lock_held(&kvm->srcu)
321 || lockdep_is_held(&kvm->slots_lock));
324 #define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
325 #define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
326 static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
328 extern struct page *bad_page;
329 extern struct page *fault_page;
331 extern pfn_t bad_pfn;
332 extern pfn_t fault_pfn;
334 int is_error_page(struct page *page);
335 int is_error_pfn(pfn_t pfn);
336 int is_hwpoison_pfn(pfn_t pfn);
337 int is_fault_pfn(pfn_t pfn);
338 int is_noslot_pfn(pfn_t pfn);
339 int is_invalid_pfn(pfn_t pfn);
340 int kvm_is_error_hva(unsigned long addr);
341 int kvm_set_memory_region(struct kvm *kvm,
342 struct kvm_userspace_memory_region *mem,
344 int __kvm_set_memory_region(struct kvm *kvm,
345 struct kvm_userspace_memory_region *mem,
347 int kvm_arch_prepare_memory_region(struct kvm *kvm,
348 struct kvm_memory_slot *memslot,
349 struct kvm_memory_slot old,
350 struct kvm_userspace_memory_region *mem,
352 void kvm_arch_commit_memory_region(struct kvm *kvm,
353 struct kvm_userspace_memory_region *mem,
354 struct kvm_memory_slot old,
356 void kvm_disable_largepages(void);
357 void kvm_arch_flush_shadow(struct kvm *kvm);
359 int gfn_to_page_many_atomic(struct kvm *kvm, gfn_t gfn, struct page **pages,
362 struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn);
363 unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn);
364 void kvm_release_page_clean(struct page *page);
365 void kvm_release_page_dirty(struct page *page);
366 void kvm_set_page_dirty(struct page *page);
367 void kvm_set_page_accessed(struct page *page);
369 pfn_t hva_to_pfn_atomic(struct kvm *kvm, unsigned long addr);
370 pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn);
371 pfn_t gfn_to_pfn_async(struct kvm *kvm, gfn_t gfn, bool *async,
372 bool write_fault, bool *writable);
373 pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn);
374 pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault,
376 pfn_t gfn_to_pfn_memslot(struct kvm *kvm,
377 struct kvm_memory_slot *slot, gfn_t gfn);
378 void kvm_release_pfn_dirty(pfn_t);
379 void kvm_release_pfn_clean(pfn_t pfn);
380 void kvm_set_pfn_dirty(pfn_t pfn);
381 void kvm_set_pfn_accessed(pfn_t pfn);
382 void kvm_get_pfn(pfn_t pfn);
384 int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset,
386 int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data,
388 int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len);
389 int kvm_read_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
390 void *data, unsigned long len);
391 int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data,
392 int offset, int len);
393 int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data,
395 int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
396 void *data, unsigned long len);
397 int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
398 gpa_t gpa, unsigned long len);
399 int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
400 int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
401 struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
402 int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
403 unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn);
404 void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
405 void mark_page_dirty_in_slot(struct kvm *kvm, struct kvm_memory_slot *memslot,
408 void kvm_vcpu_block(struct kvm_vcpu *vcpu);
409 void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu);
410 void kvm_resched(struct kvm_vcpu *vcpu);
411 void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
412 void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
414 void kvm_flush_remote_tlbs(struct kvm *kvm);
415 void kvm_reload_remote_mmus(struct kvm *kvm);
417 long kvm_arch_dev_ioctl(struct file *filp,
418 unsigned int ioctl, unsigned long arg);
419 long kvm_arch_vcpu_ioctl(struct file *filp,
420 unsigned int ioctl, unsigned long arg);
422 int kvm_dev_ioctl_check_extension(long ext);
424 int kvm_get_dirty_log(struct kvm *kvm,
425 struct kvm_dirty_log *log, int *is_dirty);
426 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
427 struct kvm_dirty_log *log);
429 int kvm_vm_ioctl_set_memory_region(struct kvm *kvm,
431 kvm_userspace_memory_region *mem,
433 long kvm_arch_vm_ioctl(struct file *filp,
434 unsigned int ioctl, unsigned long arg);
436 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
437 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
439 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
440 struct kvm_translation *tr);
442 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
443 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
444 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
445 struct kvm_sregs *sregs);
446 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
447 struct kvm_sregs *sregs);
448 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
449 struct kvm_mp_state *mp_state);
450 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
451 struct kvm_mp_state *mp_state);
452 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
453 struct kvm_guest_debug *dbg);
454 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run);
456 int kvm_arch_init(void *opaque);
457 void kvm_arch_exit(void);
459 int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu);
460 void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu);
462 void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu);
463 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
464 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
465 struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id);
466 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu);
467 void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu);
469 int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu);
470 int kvm_arch_hardware_enable(void *garbage);
471 void kvm_arch_hardware_disable(void *garbage);
472 int kvm_arch_hardware_setup(void);
473 void kvm_arch_hardware_unsetup(void);
474 void kvm_arch_check_processor_compat(void *rtn);
475 int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu);
477 void kvm_free_physmem(struct kvm *kvm);
479 #ifndef __KVM_HAVE_ARCH_VM_ALLOC
480 static inline struct kvm *kvm_arch_alloc_vm(void)
482 return kzalloc(sizeof(struct kvm), GFP_KERNEL);
485 static inline void kvm_arch_free_vm(struct kvm *kvm)
491 int kvm_arch_init_vm(struct kvm *kvm);
492 void kvm_arch_destroy_vm(struct kvm *kvm);
493 void kvm_free_all_assigned_devices(struct kvm *kvm);
494 void kvm_arch_sync_events(struct kvm *kvm);
496 int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu);
497 void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
499 int kvm_is_mmio_pfn(pfn_t pfn);
501 struct kvm_irq_ack_notifier {
502 struct hlist_node link;
504 void (*irq_acked)(struct kvm_irq_ack_notifier *kian);
507 struct kvm_assigned_dev_kernel {
508 struct kvm_irq_ack_notifier ack_notifier;
509 struct list_head list;
514 unsigned int entries_nr;
516 bool host_irq_disabled;
517 struct msix_entry *host_msix_entries;
519 struct msix_entry *guest_msix_entries;
520 unsigned long irq_requested_type;
525 spinlock_t intx_lock;
527 struct pci_saved_state *pci_saved_state;
530 struct kvm_irq_mask_notifier {
531 void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked);
533 struct hlist_node link;
536 void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq,
537 struct kvm_irq_mask_notifier *kimn);
538 void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq,
539 struct kvm_irq_mask_notifier *kimn);
540 void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin,
543 #ifdef __KVM_HAVE_IOAPIC
544 void kvm_get_intr_delivery_bitmask(struct kvm_ioapic *ioapic,
545 union kvm_ioapic_redirect_entry *entry,
546 unsigned long *deliver_bitmask);
548 int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level);
549 int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm,
550 int irq_source_id, int level);
551 void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin);
552 void kvm_register_irq_ack_notifier(struct kvm *kvm,
553 struct kvm_irq_ack_notifier *kian);
554 void kvm_unregister_irq_ack_notifier(struct kvm *kvm,
555 struct kvm_irq_ack_notifier *kian);
556 int kvm_request_irq_source_id(struct kvm *kvm);
557 void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id);
559 /* For vcpu->arch.iommu_flags */
560 #define KVM_IOMMU_CACHE_COHERENCY 0x1
562 #ifdef CONFIG_IOMMU_API
563 int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot);
564 void kvm_iommu_unmap_pages(struct kvm *kvm, struct kvm_memory_slot *slot);
565 int kvm_iommu_map_guest(struct kvm *kvm);
566 int kvm_iommu_unmap_guest(struct kvm *kvm);
567 int kvm_assign_device(struct kvm *kvm,
568 struct kvm_assigned_dev_kernel *assigned_dev);
569 int kvm_deassign_device(struct kvm *kvm,
570 struct kvm_assigned_dev_kernel *assigned_dev);
571 #else /* CONFIG_IOMMU_API */
572 static inline int kvm_iommu_map_pages(struct kvm *kvm,
573 struct kvm_memory_slot *slot)
578 static inline void kvm_iommu_unmap_pages(struct kvm *kvm,
579 struct kvm_memory_slot *slot)
583 static inline int kvm_iommu_map_guest(struct kvm *kvm)
588 static inline int kvm_iommu_unmap_guest(struct kvm *kvm)
593 static inline int kvm_assign_device(struct kvm *kvm,
594 struct kvm_assigned_dev_kernel *assigned_dev)
599 static inline int kvm_deassign_device(struct kvm *kvm,
600 struct kvm_assigned_dev_kernel *assigned_dev)
604 #endif /* CONFIG_IOMMU_API */
606 static inline void kvm_guest_enter(void)
608 BUG_ON(preemptible());
609 account_system_vtime(current);
610 current->flags |= PF_VCPU;
611 /* KVM does not hold any references to rcu protected data when it
612 * switches CPU into a guest mode. In fact switching to a guest mode
613 * is very similar to exiting to userspase from rcu point of view. In
614 * addition CPU may stay in a guest mode for quite a long time (up to
615 * one time slice). Lets treat guest mode as quiescent state, just like
616 * we do with user-mode execution.
618 rcu_virt_note_context_switch(smp_processor_id());
621 static inline void kvm_guest_exit(void)
623 account_system_vtime(current);
624 current->flags &= ~PF_VCPU;
627 static inline int memslot_id(struct kvm *kvm, gfn_t gfn)
629 return gfn_to_memslot(kvm, gfn)->id;
632 static inline unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot,
635 return slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE;
638 static inline gpa_t gfn_to_gpa(gfn_t gfn)
640 return (gpa_t)gfn << PAGE_SHIFT;
643 static inline gfn_t gpa_to_gfn(gpa_t gpa)
645 return (gfn_t)(gpa >> PAGE_SHIFT);
648 static inline hpa_t pfn_to_hpa(pfn_t pfn)
650 return (hpa_t)pfn << PAGE_SHIFT;
653 static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu)
655 set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests);
663 struct kvm_stats_debugfs_item {
666 enum kvm_stat_kind kind;
667 struct dentry *dentry;
669 extern struct kvm_stats_debugfs_item debugfs_entries[];
670 extern struct dentry *kvm_debugfs_dir;
672 #ifdef KVM_ARCH_WANT_MMU_NOTIFIER
673 static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_seq)
675 if (unlikely(vcpu->kvm->mmu_notifier_count))
678 * Both reads happen under the mmu_lock and both values are
679 * modified under mmu_lock, so there's no need of smb_rmb()
680 * here in between, otherwise mmu_notifier_count should be
681 * read before mmu_notifier_seq, see
682 * mmu_notifier_invalidate_range_end write side.
684 if (vcpu->kvm->mmu_notifier_seq != mmu_seq)
690 #ifdef CONFIG_HAVE_KVM_IRQCHIP
692 #define KVM_MAX_IRQ_ROUTES 1024
694 int kvm_setup_default_irq_routing(struct kvm *kvm);
695 int kvm_set_irq_routing(struct kvm *kvm,
696 const struct kvm_irq_routing_entry *entries,
699 void kvm_free_irq_routing(struct kvm *kvm);
703 static inline void kvm_free_irq_routing(struct kvm *kvm) {}
707 #ifdef CONFIG_HAVE_KVM_EVENTFD
709 void kvm_eventfd_init(struct kvm *kvm);
710 int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags);
711 void kvm_irqfd_release(struct kvm *kvm);
712 void kvm_irq_routing_update(struct kvm *, struct kvm_irq_routing_table *);
713 int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args);
717 static inline void kvm_eventfd_init(struct kvm *kvm) {}
719 static inline int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags)
724 static inline void kvm_irqfd_release(struct kvm *kvm) {}
726 #ifdef CONFIG_HAVE_KVM_IRQCHIP
727 static inline void kvm_irq_routing_update(struct kvm *kvm,
728 struct kvm_irq_routing_table *irq_rt)
730 rcu_assign_pointer(kvm->irq_routing, irq_rt);
734 static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
739 #endif /* CONFIG_HAVE_KVM_EVENTFD */
741 #ifdef CONFIG_KVM_APIC_ARCHITECTURE
742 static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu)
744 return vcpu->kvm->bsp_vcpu_id == vcpu->vcpu_id;
747 bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu);
751 static inline bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu) { return true; }
755 #ifdef __KVM_HAVE_DEVICE_ASSIGNMENT
757 long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl,
762 static inline long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl,
770 static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu)
772 set_bit(req, &vcpu->requests);
775 static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu)
777 if (test_bit(req, &vcpu->requests)) {
778 clear_bit(req, &vcpu->requests);