1 #ifndef __KVM_HOST_H 2 #define __KVM_HOST_H 3 4 /* 5 * This work is licensed under the terms of the GNU GPL, version 2. See 6 * the COPYING file in the top-level directory. 7 */ 8 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> 16 #include <linux/mm.h> 17 #include <linux/preempt.h> 18 #include <linux/msi.h> 19 #include <asm/signal.h> 20 21 #include <linux/kvm.h> 22 #include <linux/kvm_para.h> 23 24 #include <linux/kvm_types.h> 25 26 #include <asm/kvm_host.h> 27 28 /* 29 * vcpu->requests bit members 30 */ 31 #define KVM_REQ_TLB_FLUSH 0 32 #define KVM_REQ_MIGRATE_TIMER 1 33 #define KVM_REQ_REPORT_TPR_ACCESS 2 34 #define KVM_REQ_MMU_RELOAD 3 35 #define KVM_REQ_TRIPLE_FAULT 4 36 #define KVM_REQ_PENDING_TIMER 5 37 #define KVM_REQ_UNHALT 6 38 #define KVM_REQ_MMU_SYNC 7 39 #define KVM_REQ_KVMCLOCK_UPDATE 8 40 #define KVM_REQ_KICK 9 41 #define KVM_REQ_DEACTIVATE_FPU 10 42 43 #define KVM_USERSPACE_IRQ_SOURCE_ID 0 44 45 struct kvm; 46 struct kvm_vcpu; 47 extern struct kmem_cache *kvm_vcpu_cache; 48 49 /* 50 * It would be nice to use something smarter than a linear search, TBD... 51 * Thankfully we dont expect many devices to register (famous last words :), 52 * so until then it will suffice. At least its abstracted so we can change 53 * in one place. 54 */ 55 struct kvm_io_bus { 56 int dev_count; 57 #define NR_IOBUS_DEVS 200 58 struct kvm_io_device *devs[NR_IOBUS_DEVS]; 59 }; 60 61 enum kvm_bus { 62 KVM_MMIO_BUS, 63 KVM_PIO_BUS, 64 KVM_NR_BUSES 65 }; 66 67 int kvm_io_bus_write(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, 68 int len, const void *val); 69 int kvm_io_bus_read(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, int len, 70 void *val); 71 int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, 72 struct kvm_io_device *dev); 73 int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx, 74 struct kvm_io_device *dev); 75 76 struct kvm_vcpu { 77 struct kvm *kvm; 78 #ifdef CONFIG_PREEMPT_NOTIFIERS 79 struct preempt_notifier preempt_notifier; 80 #endif 81 int vcpu_id; 82 struct mutex mutex; 83 int cpu; 84 atomic_t guest_mode; 85 struct kvm_run *run; 86 unsigned long requests; 87 unsigned long guest_debug; 88 int srcu_idx; 89 90 int fpu_active; 91 int guest_fpu_loaded, guest_xcr0_loaded; 92 wait_queue_head_t wq; 93 int sigset_active; 94 sigset_t sigset; 95 struct kvm_vcpu_stat stat; 96 97 #ifdef CONFIG_HAS_IOMEM 98 int mmio_needed; 99 int mmio_read_completed; 100 int mmio_is_write; 101 int mmio_size; 102 unsigned char mmio_data[8]; 103 gpa_t mmio_phys_addr; 104 #endif 105 106 struct kvm_vcpu_arch arch; 107 }; 108 109 /* 110 * Some of the bitops functions do not support too long bitmaps. 111 * This number must be determined not to exceed such limits. 112 */ 113 #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1) 114 115 struct kvm_memory_slot { 116 gfn_t base_gfn; 117 unsigned long npages; 118 unsigned long flags; 119 unsigned long *rmap; 120 unsigned long *dirty_bitmap; 121 struct { 122 unsigned long rmap_pde; 123 int write_count; 124 } *lpage_info[KVM_NR_PAGE_SIZES - 1]; 125 unsigned long userspace_addr; 126 int user_alloc; 127 int id; 128 }; 129 130 static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot) 131 { 132 return ALIGN(memslot->npages, BITS_PER_LONG) / 8; 133 } 134 135 struct kvm_kernel_irq_routing_entry { 136 u32 gsi; 137 u32 type; 138 int (*set)(struct kvm_kernel_irq_routing_entry *e, 139 struct kvm *kvm, int irq_source_id, int level); 140 union { 141 struct { 142 unsigned irqchip; 143 unsigned pin; 144 } irqchip; 145 struct msi_msg msi; 146 }; 147 struct hlist_node link; 148 }; 149 150 #ifdef __KVM_HAVE_IOAPIC 151 152 struct kvm_irq_routing_table { 153 int chip[KVM_NR_IRQCHIPS][KVM_IOAPIC_NUM_PINS]; 154 struct kvm_kernel_irq_routing_entry *rt_entries; 155 u32 nr_rt_entries; 156 /* 157 * Array indexed by gsi. Each entry contains list of irq chips 158 * the gsi is connected to. 159 */ 160 struct hlist_head map[0]; 161 }; 162 163 #else 164 165 struct kvm_irq_routing_table {}; 166 167 #endif 168 169 struct kvm_memslots { 170 int nmemslots; 171 struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS + 172 KVM_PRIVATE_MEM_SLOTS]; 173 }; 174 175 struct kvm { 176 spinlock_t mmu_lock; 177 raw_spinlock_t requests_lock; 178 struct mutex slots_lock; 179 struct mm_struct *mm; /* userspace tied to this vm */ 180 struct kvm_memslots *memslots; 181 struct srcu_struct srcu; 182 #ifdef CONFIG_KVM_APIC_ARCHITECTURE 183 u32 bsp_vcpu_id; 184 struct kvm_vcpu *bsp_vcpu; 185 #endif 186 struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; 187 atomic_t online_vcpus; 188 struct list_head vm_list; 189 struct mutex lock; 190 struct kvm_io_bus *buses[KVM_NR_BUSES]; 191 #ifdef CONFIG_HAVE_KVM_EVENTFD 192 struct { 193 spinlock_t lock; 194 struct list_head items; 195 } irqfds; 196 struct list_head ioeventfds; 197 #endif 198 struct kvm_vm_stat stat; 199 struct kvm_arch arch; 200 atomic_t users_count; 201 #ifdef KVM_COALESCED_MMIO_PAGE_OFFSET 202 struct kvm_coalesced_mmio_dev *coalesced_mmio_dev; 203 struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; 204 #endif 205 206 struct mutex irq_lock; 207 #ifdef CONFIG_HAVE_KVM_IRQCHIP 208 struct kvm_irq_routing_table __rcu *irq_routing; 209 struct hlist_head mask_notifier_list; 210 struct hlist_head irq_ack_notifier_list; 211 #endif 212 213 #ifdef KVM_ARCH_WANT_MMU_NOTIFIER 214 struct mmu_notifier mmu_notifier; 215 unsigned long mmu_notifier_seq; 216 long mmu_notifier_count; 217 #endif 218 }; 219 220 /* The guest did something we don't support. */ 221 #define pr_unimpl(vcpu, fmt, ...) \ 222 do { \ 223 if (printk_ratelimit()) \ 224 printk(KERN_ERR "kvm: %i: cpu%i " fmt, \ 225 current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \ 226 } while (0) 227 228 #define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt) 229 #define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt) 230 231 static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i) 232 { 233 smp_rmb(); 234 return kvm->vcpus[i]; 235 } 236 237 #define kvm_for_each_vcpu(idx, vcpup, kvm) \ 238 for (idx = 0, vcpup = kvm_get_vcpu(kvm, idx); \ 239 idx < atomic_read(&kvm->online_vcpus) && vcpup; \ 240 vcpup = kvm_get_vcpu(kvm, ++idx)) 241 242 int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id); 243 void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); 244 245 void vcpu_load(struct kvm_vcpu *vcpu); 246 void vcpu_put(struct kvm_vcpu *vcpu); 247 248 int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, 249 struct module *module); 250 void kvm_exit(void); 251 252 void kvm_get_kvm(struct kvm *kvm); 253 void kvm_put_kvm(struct kvm *kvm); 254 255 static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm) 256 { 257 return rcu_dereference_check(kvm->memslots, 258 srcu_read_lock_held(&kvm->srcu) 259 || lockdep_is_held(&kvm->slots_lock)); 260 } 261 262 #define HPA_MSB ((sizeof(hpa_t) * 8) - 1) 263 #define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB) 264 static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; } 265 266 extern struct page *bad_page; 267 extern pfn_t bad_pfn; 268 269 int is_error_page(struct page *page); 270 int is_error_pfn(pfn_t pfn); 271 int is_hwpoison_pfn(pfn_t pfn); 272 int is_fault_pfn(pfn_t pfn); 273 int kvm_is_error_hva(unsigned long addr); 274 int kvm_set_memory_region(struct kvm *kvm, 275 struct kvm_userspace_memory_region *mem, 276 int user_alloc); 277 int __kvm_set_memory_region(struct kvm *kvm, 278 struct kvm_userspace_memory_region *mem, 279 int user_alloc); 280 int kvm_arch_prepare_memory_region(struct kvm *kvm, 281 struct kvm_memory_slot *memslot, 282 struct kvm_memory_slot old, 283 struct kvm_userspace_memory_region *mem, 284 int user_alloc); 285 void kvm_arch_commit_memory_region(struct kvm *kvm, 286 struct kvm_userspace_memory_region *mem, 287 struct kvm_memory_slot old, 288 int user_alloc); 289 void kvm_disable_largepages(void); 290 void kvm_arch_flush_shadow(struct kvm *kvm); 291 292 struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); 293 unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn); 294 void kvm_release_page_clean(struct page *page); 295 void kvm_release_page_dirty(struct page *page); 296 void kvm_set_page_dirty(struct page *page); 297 void kvm_set_page_accessed(struct page *page); 298 299 pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn); 300 pfn_t gfn_to_pfn_memslot(struct kvm *kvm, 301 struct kvm_memory_slot *slot, gfn_t gfn); 302 int memslot_id(struct kvm *kvm, gfn_t gfn); 303 void kvm_release_pfn_dirty(pfn_t); 304 void kvm_release_pfn_clean(pfn_t pfn); 305 void kvm_set_pfn_dirty(pfn_t pfn); 306 void kvm_set_pfn_accessed(pfn_t pfn); 307 void kvm_get_pfn(pfn_t pfn); 308 309 int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, 310 int len); 311 int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data, 312 unsigned long len); 313 int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); 314 int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, 315 int offset, int len); 316 int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, 317 unsigned long len); 318 int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); 319 int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); 320 struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); 321 int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); 322 unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn); 323 void mark_page_dirty(struct kvm *kvm, gfn_t gfn); 324 325 void kvm_vcpu_block(struct kvm_vcpu *vcpu); 326 void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu); 327 void kvm_resched(struct kvm_vcpu *vcpu); 328 void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); 329 void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); 330 void kvm_flush_remote_tlbs(struct kvm *kvm); 331 void kvm_reload_remote_mmus(struct kvm *kvm); 332 333 long kvm_arch_dev_ioctl(struct file *filp, 334 unsigned int ioctl, unsigned long arg); 335 long kvm_arch_vcpu_ioctl(struct file *filp, 336 unsigned int ioctl, unsigned long arg); 337 338 int kvm_dev_ioctl_check_extension(long ext); 339 340 int kvm_get_dirty_log(struct kvm *kvm, 341 struct kvm_dirty_log *log, int *is_dirty); 342 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, 343 struct kvm_dirty_log *log); 344 345 int kvm_vm_ioctl_set_memory_region(struct kvm *kvm, 346 struct 347 kvm_userspace_memory_region *mem, 348 int user_alloc); 349 long kvm_arch_vm_ioctl(struct file *filp, 350 unsigned int ioctl, unsigned long arg); 351 352 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); 353 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); 354 355 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, 356 struct kvm_translation *tr); 357 358 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); 359 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); 360 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, 361 struct kvm_sregs *sregs); 362 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, 363 struct kvm_sregs *sregs); 364 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, 365 struct kvm_mp_state *mp_state); 366 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, 367 struct kvm_mp_state *mp_state); 368 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, 369 struct kvm_guest_debug *dbg); 370 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); 371 372 int kvm_arch_init(void *opaque); 373 void kvm_arch_exit(void); 374 375 int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); 376 void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu); 377 378 void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu); 379 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); 380 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); 381 struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); 382 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu); 383 void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu); 384 385 int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu); 386 int kvm_arch_hardware_enable(void *garbage); 387 void kvm_arch_hardware_disable(void *garbage); 388 int kvm_arch_hardware_setup(void); 389 void kvm_arch_hardware_unsetup(void); 390 void kvm_arch_check_processor_compat(void *rtn); 391 int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu); 392 393 void kvm_free_physmem(struct kvm *kvm); 394 395 struct kvm *kvm_arch_create_vm(void); 396 void kvm_arch_destroy_vm(struct kvm *kvm); 397 void kvm_free_all_assigned_devices(struct kvm *kvm); 398 void kvm_arch_sync_events(struct kvm *kvm); 399 400 int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu); 401 void kvm_vcpu_kick(struct kvm_vcpu *vcpu); 402 403 int kvm_is_mmio_pfn(pfn_t pfn); 404 405 struct kvm_irq_ack_notifier { 406 struct hlist_node link; 407 unsigned gsi; 408 void (*irq_acked)(struct kvm_irq_ack_notifier *kian); 409 }; 410 411 #define KVM_ASSIGNED_MSIX_PENDING 0x1 412 struct kvm_guest_msix_entry { 413 u32 vector; 414 u16 entry; 415 u16 flags; 416 }; 417 418 struct kvm_assigned_dev_kernel { 419 struct kvm_irq_ack_notifier ack_notifier; 420 struct work_struct interrupt_work; 421 struct list_head list; 422 int assigned_dev_id; 423 int host_segnr; 424 int host_busnr; 425 int host_devfn; 426 unsigned int entries_nr; 427 int host_irq; 428 bool host_irq_disabled; 429 struct msix_entry *host_msix_entries; 430 int guest_irq; 431 struct kvm_guest_msix_entry *guest_msix_entries; 432 unsigned long irq_requested_type; 433 int irq_source_id; 434 int flags; 435 struct pci_dev *dev; 436 struct kvm *kvm; 437 spinlock_t assigned_dev_lock; 438 }; 439 440 struct kvm_irq_mask_notifier { 441 void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked); 442 int irq; 443 struct hlist_node link; 444 }; 445 446 void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq, 447 struct kvm_irq_mask_notifier *kimn); 448 void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq, 449 struct kvm_irq_mask_notifier *kimn); 450 void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin, 451 bool mask); 452 453 #ifdef __KVM_HAVE_IOAPIC 454 void kvm_get_intr_delivery_bitmask(struct kvm_ioapic *ioapic, 455 union kvm_ioapic_redirect_entry *entry, 456 unsigned long *deliver_bitmask); 457 #endif 458 int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level); 459 void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin); 460 void kvm_register_irq_ack_notifier(struct kvm *kvm, 461 struct kvm_irq_ack_notifier *kian); 462 void kvm_unregister_irq_ack_notifier(struct kvm *kvm, 463 struct kvm_irq_ack_notifier *kian); 464 int kvm_request_irq_source_id(struct kvm *kvm); 465 void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id); 466 467 /* For vcpu->arch.iommu_flags */ 468 #define KVM_IOMMU_CACHE_COHERENCY 0x1 469 470 #ifdef CONFIG_IOMMU_API 471 int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot); 472 int kvm_iommu_map_guest(struct kvm *kvm); 473 int kvm_iommu_unmap_guest(struct kvm *kvm); 474 int kvm_assign_device(struct kvm *kvm, 475 struct kvm_assigned_dev_kernel *assigned_dev); 476 int kvm_deassign_device(struct kvm *kvm, 477 struct kvm_assigned_dev_kernel *assigned_dev); 478 #else /* CONFIG_IOMMU_API */ 479 static inline int kvm_iommu_map_pages(struct kvm *kvm, 480 gfn_t base_gfn, 481 unsigned long npages) 482 { 483 return 0; 484 } 485 486 static inline int kvm_iommu_map_guest(struct kvm *kvm) 487 { 488 return -ENODEV; 489 } 490 491 static inline int kvm_iommu_unmap_guest(struct kvm *kvm) 492 { 493 return 0; 494 } 495 496 static inline int kvm_assign_device(struct kvm *kvm, 497 struct kvm_assigned_dev_kernel *assigned_dev) 498 { 499 return 0; 500 } 501 502 static inline int kvm_deassign_device(struct kvm *kvm, 503 struct kvm_assigned_dev_kernel *assigned_dev) 504 { 505 return 0; 506 } 507 #endif /* CONFIG_IOMMU_API */ 508 509 static inline void kvm_guest_enter(void) 510 { 511 account_system_vtime(current); 512 current->flags |= PF_VCPU; 513 } 514 515 static inline void kvm_guest_exit(void) 516 { 517 account_system_vtime(current); 518 current->flags &= ~PF_VCPU; 519 } 520 521 static inline gpa_t gfn_to_gpa(gfn_t gfn) 522 { 523 return (gpa_t)gfn << PAGE_SHIFT; 524 } 525 526 static inline hpa_t pfn_to_hpa(pfn_t pfn) 527 { 528 return (hpa_t)pfn << PAGE_SHIFT; 529 } 530 531 static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu) 532 { 533 set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests); 534 } 535 536 enum kvm_stat_kind { 537 KVM_STAT_VM, 538 KVM_STAT_VCPU, 539 }; 540 541 struct kvm_stats_debugfs_item { 542 const char *name; 543 int offset; 544 enum kvm_stat_kind kind; 545 struct dentry *dentry; 546 }; 547 extern struct kvm_stats_debugfs_item debugfs_entries[]; 548 extern struct dentry *kvm_debugfs_dir; 549 550 #ifdef KVM_ARCH_WANT_MMU_NOTIFIER 551 static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_seq) 552 { 553 if (unlikely(vcpu->kvm->mmu_notifier_count)) 554 return 1; 555 /* 556 * Both reads happen under the mmu_lock and both values are 557 * modified under mmu_lock, so there's no need of smb_rmb() 558 * here in between, otherwise mmu_notifier_count should be 559 * read before mmu_notifier_seq, see 560 * mmu_notifier_invalidate_range_end write side. 561 */ 562 if (vcpu->kvm->mmu_notifier_seq != mmu_seq) 563 return 1; 564 return 0; 565 } 566 #endif 567 568 #ifdef CONFIG_HAVE_KVM_IRQCHIP 569 570 #define KVM_MAX_IRQ_ROUTES 1024 571 572 int kvm_setup_default_irq_routing(struct kvm *kvm); 573 int kvm_set_irq_routing(struct kvm *kvm, 574 const struct kvm_irq_routing_entry *entries, 575 unsigned nr, 576 unsigned flags); 577 void kvm_free_irq_routing(struct kvm *kvm); 578 579 #else 580 581 static inline void kvm_free_irq_routing(struct kvm *kvm) {} 582 583 #endif 584 585 #ifdef CONFIG_HAVE_KVM_EVENTFD 586 587 void kvm_eventfd_init(struct kvm *kvm); 588 int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags); 589 void kvm_irqfd_release(struct kvm *kvm); 590 int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args); 591 592 #else 593 594 static inline void kvm_eventfd_init(struct kvm *kvm) {} 595 static inline int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags) 596 { 597 return -EINVAL; 598 } 599 600 static inline void kvm_irqfd_release(struct kvm *kvm) {} 601 static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) 602 { 603 return -ENOSYS; 604 } 605 606 #endif /* CONFIG_HAVE_KVM_EVENTFD */ 607 608 #ifdef CONFIG_KVM_APIC_ARCHITECTURE 609 static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu) 610 { 611 return vcpu->kvm->bsp_vcpu_id == vcpu->vcpu_id; 612 } 613 #endif 614 615 #ifdef __KVM_HAVE_DEVICE_ASSIGNMENT 616 617 long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, 618 unsigned long arg); 619 620 #else 621 622 static inline long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, 623 unsigned long arg) 624 { 625 return -ENOTTY; 626 } 627 628 #endif 629 630 static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu) 631 { 632 set_bit(req, &vcpu->requests); 633 } 634 635 static inline bool kvm_make_check_request(int req, struct kvm_vcpu *vcpu) 636 { 637 return test_and_set_bit(req, &vcpu->requests); 638 } 639 640 static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu) 641 { 642 if (test_bit(req, &vcpu->requests)) { 643 clear_bit(req, &vcpu->requests); 644 return true; 645 } else { 646 return false; 647 } 648 } 649 650 #endif 651 652