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