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_CLOCK_UPDATE 8 40 #define KVM_REQ_KICK 9 41 #define KVM_REQ_DEACTIVATE_FPU 10 42 #define KVM_REQ_EVENT 11 43 44 #define KVM_USERSPACE_IRQ_SOURCE_ID 0 45 46 struct kvm; 47 struct kvm_vcpu; 48 extern struct kmem_cache *kvm_vcpu_cache; 49 50 /* 51 * It would be nice to use something smarter than a linear search, TBD... 52 * Thankfully we dont expect many devices to register (famous last words :), 53 * so until then it will suffice. At least its abstracted so we can change 54 * in one place. 55 */ 56 struct kvm_io_bus { 57 int dev_count; 58 #define NR_IOBUS_DEVS 200 59 struct kvm_io_device *devs[NR_IOBUS_DEVS]; 60 }; 61 62 enum kvm_bus { 63 KVM_MMIO_BUS, 64 KVM_PIO_BUS, 65 KVM_NR_BUSES 66 }; 67 68 int kvm_io_bus_write(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, 69 int len, const void *val); 70 int kvm_io_bus_read(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, int len, 71 void *val); 72 int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, 73 struct kvm_io_device *dev); 74 int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx, 75 struct kvm_io_device *dev); 76 77 struct kvm_vcpu { 78 struct kvm *kvm; 79 #ifdef CONFIG_PREEMPT_NOTIFIERS 80 struct preempt_notifier preempt_notifier; 81 #endif 82 int vcpu_id; 83 struct mutex mutex; 84 int cpu; 85 atomic_t guest_mode; 86 struct kvm_run *run; 87 unsigned long requests; 88 unsigned long guest_debug; 89 int srcu_idx; 90 91 int fpu_active; 92 int guest_fpu_loaded, guest_xcr0_loaded; 93 wait_queue_head_t wq; 94 int sigset_active; 95 sigset_t sigset; 96 struct kvm_vcpu_stat stat; 97 98 #ifdef CONFIG_HAS_IOMEM 99 int mmio_needed; 100 int mmio_read_completed; 101 int mmio_is_write; 102 int mmio_size; 103 unsigned char mmio_data[8]; 104 gpa_t mmio_phys_addr; 105 #endif 106 107 struct kvm_vcpu_arch arch; 108 }; 109 110 /* 111 * Some of the bitops functions do not support too long bitmaps. 112 * This number must be determined not to exceed such limits. 113 */ 114 #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1) 115 116 struct kvm_memory_slot { 117 gfn_t base_gfn; 118 unsigned long npages; 119 unsigned long flags; 120 unsigned long *rmap; 121 unsigned long *dirty_bitmap; 122 struct { 123 unsigned long rmap_pde; 124 int write_count; 125 } *lpage_info[KVM_NR_PAGE_SIZES - 1]; 126 unsigned long userspace_addr; 127 int user_alloc; 128 int id; 129 }; 130 131 static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot) 132 { 133 return ALIGN(memslot->npages, BITS_PER_LONG) / 8; 134 } 135 136 struct kvm_kernel_irq_routing_entry { 137 u32 gsi; 138 u32 type; 139 int (*set)(struct kvm_kernel_irq_routing_entry *e, 140 struct kvm *kvm, int irq_source_id, int level); 141 union { 142 struct { 143 unsigned irqchip; 144 unsigned pin; 145 } irqchip; 146 struct msi_msg msi; 147 }; 148 struct hlist_node link; 149 }; 150 151 #ifdef __KVM_HAVE_IOAPIC 152 153 struct kvm_irq_routing_table { 154 int chip[KVM_NR_IRQCHIPS][KVM_IOAPIC_NUM_PINS]; 155 struct kvm_kernel_irq_routing_entry *rt_entries; 156 u32 nr_rt_entries; 157 /* 158 * Array indexed by gsi. Each entry contains list of irq chips 159 * the gsi is connected to. 160 */ 161 struct hlist_head map[0]; 162 }; 163 164 #else 165 166 struct kvm_irq_routing_table {}; 167 168 #endif 169 170 struct kvm_memslots { 171 int nmemslots; 172 struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS + 173 KVM_PRIVATE_MEM_SLOTS]; 174 }; 175 176 struct kvm { 177 spinlock_t mmu_lock; 178 raw_spinlock_t requests_lock; 179 struct mutex slots_lock; 180 struct mm_struct *mm; /* userspace tied to this vm */ 181 struct kvm_memslots *memslots; 182 struct srcu_struct srcu; 183 #ifdef CONFIG_KVM_APIC_ARCHITECTURE 184 u32 bsp_vcpu_id; 185 struct kvm_vcpu *bsp_vcpu; 186 #endif 187 struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; 188 atomic_t online_vcpus; 189 struct list_head vm_list; 190 struct mutex lock; 191 struct kvm_io_bus *buses[KVM_NR_BUSES]; 192 #ifdef CONFIG_HAVE_KVM_EVENTFD 193 struct { 194 spinlock_t lock; 195 struct list_head items; 196 } irqfds; 197 struct list_head ioeventfds; 198 #endif 199 struct kvm_vm_stat stat; 200 struct kvm_arch arch; 201 atomic_t users_count; 202 #ifdef KVM_COALESCED_MMIO_PAGE_OFFSET 203 struct kvm_coalesced_mmio_dev *coalesced_mmio_dev; 204 struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; 205 #endif 206 207 struct mutex irq_lock; 208 #ifdef CONFIG_HAVE_KVM_IRQCHIP 209 struct kvm_irq_routing_table __rcu *irq_routing; 210 struct hlist_head mask_notifier_list; 211 struct hlist_head irq_ack_notifier_list; 212 #endif 213 214 #ifdef KVM_ARCH_WANT_MMU_NOTIFIER 215 struct mmu_notifier mmu_notifier; 216 unsigned long mmu_notifier_seq; 217 long mmu_notifier_count; 218 #endif 219 }; 220 221 /* The guest did something we don't support. */ 222 #define pr_unimpl(vcpu, fmt, ...) \ 223 do { \ 224 if (printk_ratelimit()) \ 225 printk(KERN_ERR "kvm: %i: cpu%i " fmt, \ 226 current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \ 227 } while (0) 228 229 #define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt) 230 #define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt) 231 232 static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i) 233 { 234 smp_rmb(); 235 return kvm->vcpus[i]; 236 } 237 238 #define kvm_for_each_vcpu(idx, vcpup, kvm) \ 239 for (idx = 0, vcpup = kvm_get_vcpu(kvm, idx); \ 240 idx < atomic_read(&kvm->online_vcpus) && vcpup; \ 241 vcpup = kvm_get_vcpu(kvm, ++idx)) 242 243 int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id); 244 void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); 245 246 void vcpu_load(struct kvm_vcpu *vcpu); 247 void vcpu_put(struct kvm_vcpu *vcpu); 248 249 int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, 250 struct module *module); 251 void kvm_exit(void); 252 253 void kvm_get_kvm(struct kvm *kvm); 254 void kvm_put_kvm(struct kvm *kvm); 255 256 static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm) 257 { 258 return rcu_dereference_check(kvm->memslots, 259 srcu_read_lock_held(&kvm->srcu) 260 || lockdep_is_held(&kvm->slots_lock)); 261 } 262 263 #define HPA_MSB ((sizeof(hpa_t) * 8) - 1) 264 #define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB) 265 static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; } 266 267 extern struct page *bad_page; 268 extern pfn_t bad_pfn; 269 270 int is_error_page(struct page *page); 271 int is_error_pfn(pfn_t pfn); 272 int is_hwpoison_pfn(pfn_t pfn); 273 int is_fault_pfn(pfn_t pfn); 274 int kvm_is_error_hva(unsigned long addr); 275 int kvm_set_memory_region(struct kvm *kvm, 276 struct kvm_userspace_memory_region *mem, 277 int user_alloc); 278 int __kvm_set_memory_region(struct kvm *kvm, 279 struct kvm_userspace_memory_region *mem, 280 int user_alloc); 281 int kvm_arch_prepare_memory_region(struct kvm *kvm, 282 struct kvm_memory_slot *memslot, 283 struct kvm_memory_slot old, 284 struct kvm_userspace_memory_region *mem, 285 int user_alloc); 286 void kvm_arch_commit_memory_region(struct kvm *kvm, 287 struct kvm_userspace_memory_region *mem, 288 struct kvm_memory_slot old, 289 int user_alloc); 290 void kvm_disable_largepages(void); 291 void kvm_arch_flush_shadow(struct kvm *kvm); 292 293 int gfn_to_page_many_atomic(struct kvm *kvm, gfn_t gfn, struct page **pages, 294 int nr_pages); 295 296 struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); 297 unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn); 298 void kvm_release_page_clean(struct page *page); 299 void kvm_release_page_dirty(struct page *page); 300 void kvm_set_page_dirty(struct page *page); 301 void kvm_set_page_accessed(struct page *page); 302 303 pfn_t hva_to_pfn_atomic(struct kvm *kvm, unsigned long addr); 304 pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn); 305 pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn); 306 pfn_t gfn_to_pfn_memslot(struct kvm *kvm, 307 struct kvm_memory_slot *slot, gfn_t gfn); 308 int memslot_id(struct kvm *kvm, gfn_t gfn); 309 void kvm_release_pfn_dirty(pfn_t); 310 void kvm_release_pfn_clean(pfn_t pfn); 311 void kvm_set_pfn_dirty(pfn_t pfn); 312 void kvm_set_pfn_accessed(pfn_t pfn); 313 void kvm_get_pfn(pfn_t pfn); 314 315 int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, 316 int len); 317 int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data, 318 unsigned long len); 319 int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); 320 int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, 321 int offset, int len); 322 int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, 323 unsigned long len); 324 int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); 325 int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); 326 struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); 327 int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); 328 unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn); 329 void mark_page_dirty(struct kvm *kvm, gfn_t gfn); 330 331 void kvm_vcpu_block(struct kvm_vcpu *vcpu); 332 void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu); 333 void kvm_resched(struct kvm_vcpu *vcpu); 334 void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); 335 void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); 336 void kvm_flush_remote_tlbs(struct kvm *kvm); 337 void kvm_reload_remote_mmus(struct kvm *kvm); 338 339 long kvm_arch_dev_ioctl(struct file *filp, 340 unsigned int ioctl, unsigned long arg); 341 long kvm_arch_vcpu_ioctl(struct file *filp, 342 unsigned int ioctl, unsigned long arg); 343 344 int kvm_dev_ioctl_check_extension(long ext); 345 346 int kvm_get_dirty_log(struct kvm *kvm, 347 struct kvm_dirty_log *log, int *is_dirty); 348 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, 349 struct kvm_dirty_log *log); 350 351 int kvm_vm_ioctl_set_memory_region(struct kvm *kvm, 352 struct 353 kvm_userspace_memory_region *mem, 354 int user_alloc); 355 long kvm_arch_vm_ioctl(struct file *filp, 356 unsigned int ioctl, unsigned long arg); 357 358 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); 359 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); 360 361 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, 362 struct kvm_translation *tr); 363 364 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); 365 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); 366 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, 367 struct kvm_sregs *sregs); 368 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, 369 struct kvm_sregs *sregs); 370 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, 371 struct kvm_mp_state *mp_state); 372 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, 373 struct kvm_mp_state *mp_state); 374 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, 375 struct kvm_guest_debug *dbg); 376 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); 377 378 int kvm_arch_init(void *opaque); 379 void kvm_arch_exit(void); 380 381 int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); 382 void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu); 383 384 void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu); 385 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); 386 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); 387 struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); 388 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu); 389 void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu); 390 391 int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu); 392 int kvm_arch_hardware_enable(void *garbage); 393 void kvm_arch_hardware_disable(void *garbage); 394 int kvm_arch_hardware_setup(void); 395 void kvm_arch_hardware_unsetup(void); 396 void kvm_arch_check_processor_compat(void *rtn); 397 int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu); 398 399 void kvm_free_physmem(struct kvm *kvm); 400 401 struct kvm *kvm_arch_create_vm(void); 402 void kvm_arch_destroy_vm(struct kvm *kvm); 403 void kvm_free_all_assigned_devices(struct kvm *kvm); 404 void kvm_arch_sync_events(struct kvm *kvm); 405 406 int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu); 407 void kvm_vcpu_kick(struct kvm_vcpu *vcpu); 408 409 int kvm_is_mmio_pfn(pfn_t pfn); 410 411 struct kvm_irq_ack_notifier { 412 struct hlist_node link; 413 unsigned gsi; 414 void (*irq_acked)(struct kvm_irq_ack_notifier *kian); 415 }; 416 417 #define KVM_ASSIGNED_MSIX_PENDING 0x1 418 struct kvm_guest_msix_entry { 419 u32 vector; 420 u16 entry; 421 u16 flags; 422 }; 423 424 struct kvm_assigned_dev_kernel { 425 struct kvm_irq_ack_notifier ack_notifier; 426 struct work_struct interrupt_work; 427 struct list_head list; 428 int assigned_dev_id; 429 int host_segnr; 430 int host_busnr; 431 int host_devfn; 432 unsigned int entries_nr; 433 int host_irq; 434 bool host_irq_disabled; 435 struct msix_entry *host_msix_entries; 436 int guest_irq; 437 struct kvm_guest_msix_entry *guest_msix_entries; 438 unsigned long irq_requested_type; 439 int irq_source_id; 440 int flags; 441 struct pci_dev *dev; 442 struct kvm *kvm; 443 spinlock_t assigned_dev_lock; 444 }; 445 446 struct kvm_irq_mask_notifier { 447 void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked); 448 int irq; 449 struct hlist_node link; 450 }; 451 452 void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq, 453 struct kvm_irq_mask_notifier *kimn); 454 void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq, 455 struct kvm_irq_mask_notifier *kimn); 456 void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin, 457 bool mask); 458 459 #ifdef __KVM_HAVE_IOAPIC 460 void kvm_get_intr_delivery_bitmask(struct kvm_ioapic *ioapic, 461 union kvm_ioapic_redirect_entry *entry, 462 unsigned long *deliver_bitmask); 463 #endif 464 int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level); 465 void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin); 466 void kvm_register_irq_ack_notifier(struct kvm *kvm, 467 struct kvm_irq_ack_notifier *kian); 468 void kvm_unregister_irq_ack_notifier(struct kvm *kvm, 469 struct kvm_irq_ack_notifier *kian); 470 int kvm_request_irq_source_id(struct kvm *kvm); 471 void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id); 472 473 /* For vcpu->arch.iommu_flags */ 474 #define KVM_IOMMU_CACHE_COHERENCY 0x1 475 476 #ifdef CONFIG_IOMMU_API 477 int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot); 478 int kvm_iommu_map_guest(struct kvm *kvm); 479 int kvm_iommu_unmap_guest(struct kvm *kvm); 480 int kvm_assign_device(struct kvm *kvm, 481 struct kvm_assigned_dev_kernel *assigned_dev); 482 int kvm_deassign_device(struct kvm *kvm, 483 struct kvm_assigned_dev_kernel *assigned_dev); 484 #else /* CONFIG_IOMMU_API */ 485 static inline int kvm_iommu_map_pages(struct kvm *kvm, 486 struct kvm_memory_slot *slot) 487 { 488 return 0; 489 } 490 491 static inline int kvm_iommu_map_guest(struct kvm *kvm) 492 { 493 return -ENODEV; 494 } 495 496 static inline int kvm_iommu_unmap_guest(struct kvm *kvm) 497 { 498 return 0; 499 } 500 501 static inline int kvm_assign_device(struct kvm *kvm, 502 struct kvm_assigned_dev_kernel *assigned_dev) 503 { 504 return 0; 505 } 506 507 static inline int kvm_deassign_device(struct kvm *kvm, 508 struct kvm_assigned_dev_kernel *assigned_dev) 509 { 510 return 0; 511 } 512 #endif /* CONFIG_IOMMU_API */ 513 514 static inline void kvm_guest_enter(void) 515 { 516 account_system_vtime(current); 517 current->flags |= PF_VCPU; 518 } 519 520 static inline void kvm_guest_exit(void) 521 { 522 account_system_vtime(current); 523 current->flags &= ~PF_VCPU; 524 } 525 526 static inline unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, 527 gfn_t gfn) 528 { 529 return slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE; 530 } 531 532 static inline gpa_t gfn_to_gpa(gfn_t gfn) 533 { 534 return (gpa_t)gfn << PAGE_SHIFT; 535 } 536 537 static inline gfn_t gpa_to_gfn(gpa_t gpa) 538 { 539 return (gfn_t)(gpa >> PAGE_SHIFT); 540 } 541 542 static inline hpa_t pfn_to_hpa(pfn_t pfn) 543 { 544 return (hpa_t)pfn << PAGE_SHIFT; 545 } 546 547 static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu) 548 { 549 set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests); 550 } 551 552 enum kvm_stat_kind { 553 KVM_STAT_VM, 554 KVM_STAT_VCPU, 555 }; 556 557 struct kvm_stats_debugfs_item { 558 const char *name; 559 int offset; 560 enum kvm_stat_kind kind; 561 struct dentry *dentry; 562 }; 563 extern struct kvm_stats_debugfs_item debugfs_entries[]; 564 extern struct dentry *kvm_debugfs_dir; 565 566 #ifdef KVM_ARCH_WANT_MMU_NOTIFIER 567 static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_seq) 568 { 569 if (unlikely(vcpu->kvm->mmu_notifier_count)) 570 return 1; 571 /* 572 * Both reads happen under the mmu_lock and both values are 573 * modified under mmu_lock, so there's no need of smb_rmb() 574 * here in between, otherwise mmu_notifier_count should be 575 * read before mmu_notifier_seq, see 576 * mmu_notifier_invalidate_range_end write side. 577 */ 578 if (vcpu->kvm->mmu_notifier_seq != mmu_seq) 579 return 1; 580 return 0; 581 } 582 #endif 583 584 #ifdef CONFIG_HAVE_KVM_IRQCHIP 585 586 #define KVM_MAX_IRQ_ROUTES 1024 587 588 int kvm_setup_default_irq_routing(struct kvm *kvm); 589 int kvm_set_irq_routing(struct kvm *kvm, 590 const struct kvm_irq_routing_entry *entries, 591 unsigned nr, 592 unsigned flags); 593 void kvm_free_irq_routing(struct kvm *kvm); 594 595 #else 596 597 static inline void kvm_free_irq_routing(struct kvm *kvm) {} 598 599 #endif 600 601 #ifdef CONFIG_HAVE_KVM_EVENTFD 602 603 void kvm_eventfd_init(struct kvm *kvm); 604 int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags); 605 void kvm_irqfd_release(struct kvm *kvm); 606 int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args); 607 608 #else 609 610 static inline void kvm_eventfd_init(struct kvm *kvm) {} 611 static inline int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags) 612 { 613 return -EINVAL; 614 } 615 616 static inline void kvm_irqfd_release(struct kvm *kvm) {} 617 static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) 618 { 619 return -ENOSYS; 620 } 621 622 #endif /* CONFIG_HAVE_KVM_EVENTFD */ 623 624 #ifdef CONFIG_KVM_APIC_ARCHITECTURE 625 static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu) 626 { 627 return vcpu->kvm->bsp_vcpu_id == vcpu->vcpu_id; 628 } 629 #endif 630 631 #ifdef __KVM_HAVE_DEVICE_ASSIGNMENT 632 633 long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, 634 unsigned long arg); 635 636 #else 637 638 static inline long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, 639 unsigned long arg) 640 { 641 return -ENOTTY; 642 } 643 644 #endif 645 646 static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu) 647 { 648 set_bit(req, &vcpu->requests); 649 } 650 651 static inline bool kvm_make_check_request(int req, struct kvm_vcpu *vcpu) 652 { 653 return test_and_set_bit(req, &vcpu->requests); 654 } 655 656 static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu) 657 { 658 if (test_bit(req, &vcpu->requests)) { 659 clear_bit(req, &vcpu->requests); 660 return true; 661 } else { 662 return false; 663 } 664 } 665 666 #endif 667 668