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