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/bug.h> 17 #include <linux/mm.h> 18 #include <linux/mmu_notifier.h> 19 #include <linux/preempt.h> 20 #include <linux/msi.h> 21 #include <linux/slab.h> 22 #include <linux/rcupdate.h> 23 #include <linux/ratelimit.h> 24 #include <linux/err.h> 25 #include <linux/irqflags.h> 26 #include <linux/context_tracking.h> 27 #include <linux/irqbypass.h> 28 #include <asm/signal.h> 29 30 #include <linux/kvm.h> 31 #include <linux/kvm_para.h> 32 33 #include <linux/kvm_types.h> 34 35 #include <asm/kvm_host.h> 36 37 /* 38 * The bit 16 ~ bit 31 of kvm_memory_region::flags are internally used 39 * in kvm, other bits are visible for userspace which are defined in 40 * include/linux/kvm_h. 41 */ 42 #define KVM_MEMSLOT_INVALID (1UL << 16) 43 #define KVM_MEMSLOT_INCOHERENT (1UL << 17) 44 45 /* Two fragments for cross MMIO pages. */ 46 #define KVM_MAX_MMIO_FRAGMENTS 2 47 48 #ifndef KVM_ADDRESS_SPACE_NUM 49 #define KVM_ADDRESS_SPACE_NUM 1 50 #endif 51 52 /* 53 * For the normal pfn, the highest 12 bits should be zero, 54 * so we can mask bit 62 ~ bit 52 to indicate the error pfn, 55 * mask bit 63 to indicate the noslot pfn. 56 */ 57 #define KVM_PFN_ERR_MASK (0x7ffULL << 52) 58 #define KVM_PFN_ERR_NOSLOT_MASK (0xfffULL << 52) 59 #define KVM_PFN_NOSLOT (0x1ULL << 63) 60 61 #define KVM_PFN_ERR_FAULT (KVM_PFN_ERR_MASK) 62 #define KVM_PFN_ERR_HWPOISON (KVM_PFN_ERR_MASK + 1) 63 #define KVM_PFN_ERR_RO_FAULT (KVM_PFN_ERR_MASK + 2) 64 65 /* 66 * error pfns indicate that the gfn is in slot but faild to 67 * translate it to pfn on host. 68 */ 69 static inline bool is_error_pfn(kvm_pfn_t pfn) 70 { 71 return !!(pfn & KVM_PFN_ERR_MASK); 72 } 73 74 /* 75 * error_noslot pfns indicate that the gfn can not be 76 * translated to pfn - it is not in slot or failed to 77 * translate it to pfn. 78 */ 79 static inline bool is_error_noslot_pfn(kvm_pfn_t pfn) 80 { 81 return !!(pfn & KVM_PFN_ERR_NOSLOT_MASK); 82 } 83 84 /* noslot pfn indicates that the gfn is not in slot. */ 85 static inline bool is_noslot_pfn(kvm_pfn_t pfn) 86 { 87 return pfn == KVM_PFN_NOSLOT; 88 } 89 90 /* 91 * architectures with KVM_HVA_ERR_BAD other than PAGE_OFFSET (e.g. s390) 92 * provide own defines and kvm_is_error_hva 93 */ 94 #ifndef KVM_HVA_ERR_BAD 95 96 #define KVM_HVA_ERR_BAD (PAGE_OFFSET) 97 #define KVM_HVA_ERR_RO_BAD (PAGE_OFFSET + PAGE_SIZE) 98 99 static inline bool kvm_is_error_hva(unsigned long addr) 100 { 101 return addr >= PAGE_OFFSET; 102 } 103 104 #endif 105 106 #define KVM_ERR_PTR_BAD_PAGE (ERR_PTR(-ENOENT)) 107 108 static inline bool is_error_page(struct page *page) 109 { 110 return IS_ERR(page); 111 } 112 113 /* 114 * Architecture-independent vcpu->requests bit members 115 * Bits 4-7 are reserved for more arch-independent bits. 116 */ 117 #define KVM_REQ_TLB_FLUSH 0 118 #define KVM_REQ_MMU_RELOAD 1 119 #define KVM_REQ_PENDING_TIMER 2 120 #define KVM_REQ_UNHALT 3 121 122 #define KVM_USERSPACE_IRQ_SOURCE_ID 0 123 #define KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID 1 124 125 extern struct kmem_cache *kvm_vcpu_cache; 126 127 extern spinlock_t kvm_lock; 128 extern struct list_head vm_list; 129 130 struct kvm_io_range { 131 gpa_t addr; 132 int len; 133 struct kvm_io_device *dev; 134 }; 135 136 #define NR_IOBUS_DEVS 1000 137 138 struct kvm_io_bus { 139 int dev_count; 140 int ioeventfd_count; 141 struct kvm_io_range range[]; 142 }; 143 144 enum kvm_bus { 145 KVM_MMIO_BUS, 146 KVM_PIO_BUS, 147 KVM_VIRTIO_CCW_NOTIFY_BUS, 148 KVM_FAST_MMIO_BUS, 149 KVM_NR_BUSES 150 }; 151 152 int kvm_io_bus_write(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr, 153 int len, const void *val); 154 int kvm_io_bus_write_cookie(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, 155 gpa_t addr, int len, const void *val, long cookie); 156 int kvm_io_bus_read(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr, 157 int len, void *val); 158 int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, 159 int len, struct kvm_io_device *dev); 160 int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx, 161 struct kvm_io_device *dev); 162 163 #ifdef CONFIG_KVM_ASYNC_PF 164 struct kvm_async_pf { 165 struct work_struct work; 166 struct list_head link; 167 struct list_head queue; 168 struct kvm_vcpu *vcpu; 169 struct mm_struct *mm; 170 gva_t gva; 171 unsigned long addr; 172 struct kvm_arch_async_pf arch; 173 bool wakeup_all; 174 }; 175 176 void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu); 177 void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu); 178 int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, unsigned long hva, 179 struct kvm_arch_async_pf *arch); 180 int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu); 181 #endif 182 183 enum { 184 OUTSIDE_GUEST_MODE, 185 IN_GUEST_MODE, 186 EXITING_GUEST_MODE, 187 READING_SHADOW_PAGE_TABLES, 188 }; 189 190 /* 191 * Sometimes a large or cross-page mmio needs to be broken up into separate 192 * exits for userspace servicing. 193 */ 194 struct kvm_mmio_fragment { 195 gpa_t gpa; 196 void *data; 197 unsigned len; 198 }; 199 200 struct kvm_vcpu { 201 struct kvm *kvm; 202 #ifdef CONFIG_PREEMPT_NOTIFIERS 203 struct preempt_notifier preempt_notifier; 204 #endif 205 int cpu; 206 int vcpu_id; 207 int srcu_idx; 208 int mode; 209 unsigned long requests; 210 unsigned long guest_debug; 211 212 int pre_pcpu; 213 struct list_head blocked_vcpu_list; 214 215 struct mutex mutex; 216 struct kvm_run *run; 217 218 int fpu_active; 219 int guest_fpu_loaded, guest_xcr0_loaded; 220 unsigned char fpu_counter; 221 wait_queue_head_t wq; 222 struct pid *pid; 223 int sigset_active; 224 sigset_t sigset; 225 struct kvm_vcpu_stat stat; 226 unsigned int halt_poll_ns; 227 228 #ifdef CONFIG_HAS_IOMEM 229 int mmio_needed; 230 int mmio_read_completed; 231 int mmio_is_write; 232 int mmio_cur_fragment; 233 int mmio_nr_fragments; 234 struct kvm_mmio_fragment mmio_fragments[KVM_MAX_MMIO_FRAGMENTS]; 235 #endif 236 237 #ifdef CONFIG_KVM_ASYNC_PF 238 struct { 239 u32 queued; 240 struct list_head queue; 241 struct list_head done; 242 spinlock_t lock; 243 } async_pf; 244 #endif 245 246 #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT 247 /* 248 * Cpu relax intercept or pause loop exit optimization 249 * in_spin_loop: set when a vcpu does a pause loop exit 250 * or cpu relax intercepted. 251 * dy_eligible: indicates whether vcpu is eligible for directed yield. 252 */ 253 struct { 254 bool in_spin_loop; 255 bool dy_eligible; 256 } spin_loop; 257 #endif 258 bool preempted; 259 struct kvm_vcpu_arch arch; 260 }; 261 262 static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu) 263 { 264 return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE); 265 } 266 267 /* 268 * Some of the bitops functions do not support too long bitmaps. 269 * This number must be determined not to exceed such limits. 270 */ 271 #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1) 272 273 struct kvm_memory_slot { 274 gfn_t base_gfn; 275 unsigned long npages; 276 unsigned long *dirty_bitmap; 277 struct kvm_arch_memory_slot arch; 278 unsigned long userspace_addr; 279 u32 flags; 280 short id; 281 }; 282 283 static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot) 284 { 285 return ALIGN(memslot->npages, BITS_PER_LONG) / 8; 286 } 287 288 struct kvm_s390_adapter_int { 289 u64 ind_addr; 290 u64 summary_addr; 291 u64 ind_offset; 292 u32 summary_offset; 293 u32 adapter_id; 294 }; 295 296 struct kvm_hv_sint { 297 u32 vcpu; 298 u32 sint; 299 }; 300 301 struct kvm_kernel_irq_routing_entry { 302 u32 gsi; 303 u32 type; 304 int (*set)(struct kvm_kernel_irq_routing_entry *e, 305 struct kvm *kvm, int irq_source_id, int level, 306 bool line_status); 307 union { 308 struct { 309 unsigned irqchip; 310 unsigned pin; 311 } irqchip; 312 struct msi_msg msi; 313 struct kvm_s390_adapter_int adapter; 314 struct kvm_hv_sint hv_sint; 315 }; 316 struct hlist_node link; 317 }; 318 319 #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING 320 struct kvm_irq_routing_table { 321 int chip[KVM_NR_IRQCHIPS][KVM_IRQCHIP_NUM_PINS]; 322 u32 nr_rt_entries; 323 /* 324 * Array indexed by gsi. Each entry contains list of irq chips 325 * the gsi is connected to. 326 */ 327 struct hlist_head map[0]; 328 }; 329 #endif 330 331 #ifndef KVM_PRIVATE_MEM_SLOTS 332 #define KVM_PRIVATE_MEM_SLOTS 0 333 #endif 334 335 #ifndef KVM_MEM_SLOTS_NUM 336 #define KVM_MEM_SLOTS_NUM (KVM_USER_MEM_SLOTS + KVM_PRIVATE_MEM_SLOTS) 337 #endif 338 339 #ifndef __KVM_VCPU_MULTIPLE_ADDRESS_SPACE 340 static inline int kvm_arch_vcpu_memslots_id(struct kvm_vcpu *vcpu) 341 { 342 return 0; 343 } 344 #endif 345 346 /* 347 * Note: 348 * memslots are not sorted by id anymore, please use id_to_memslot() 349 * to get the memslot by its id. 350 */ 351 struct kvm_memslots { 352 u64 generation; 353 struct kvm_memory_slot memslots[KVM_MEM_SLOTS_NUM]; 354 /* The mapping table from slot id to the index in memslots[]. */ 355 short id_to_index[KVM_MEM_SLOTS_NUM]; 356 atomic_t lru_slot; 357 int used_slots; 358 }; 359 360 struct kvm { 361 spinlock_t mmu_lock; 362 struct mutex slots_lock; 363 struct mm_struct *mm; /* userspace tied to this vm */ 364 struct kvm_memslots *memslots[KVM_ADDRESS_SPACE_NUM]; 365 struct srcu_struct srcu; 366 struct srcu_struct irq_srcu; 367 struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; 368 atomic_t online_vcpus; 369 int last_boosted_vcpu; 370 struct list_head vm_list; 371 struct mutex lock; 372 struct kvm_io_bus *buses[KVM_NR_BUSES]; 373 #ifdef CONFIG_HAVE_KVM_EVENTFD 374 struct { 375 spinlock_t lock; 376 struct list_head items; 377 struct list_head resampler_list; 378 struct mutex resampler_lock; 379 } irqfds; 380 struct list_head ioeventfds; 381 #endif 382 struct kvm_vm_stat stat; 383 struct kvm_arch arch; 384 atomic_t users_count; 385 #ifdef KVM_COALESCED_MMIO_PAGE_OFFSET 386 struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; 387 spinlock_t ring_lock; 388 struct list_head coalesced_zones; 389 #endif 390 391 struct mutex irq_lock; 392 #ifdef CONFIG_HAVE_KVM_IRQCHIP 393 /* 394 * Update side is protected by irq_lock. 395 */ 396 struct kvm_irq_routing_table __rcu *irq_routing; 397 #endif 398 #ifdef CONFIG_HAVE_KVM_IRQFD 399 struct hlist_head irq_ack_notifier_list; 400 #endif 401 402 #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) 403 struct mmu_notifier mmu_notifier; 404 unsigned long mmu_notifier_seq; 405 long mmu_notifier_count; 406 #endif 407 long tlbs_dirty; 408 struct list_head devices; 409 }; 410 411 #define kvm_err(fmt, ...) \ 412 pr_err("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) 413 #define kvm_info(fmt, ...) \ 414 pr_info("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) 415 #define kvm_debug(fmt, ...) \ 416 pr_debug("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) 417 #define kvm_pr_unimpl(fmt, ...) \ 418 pr_err_ratelimited("kvm [%i]: " fmt, \ 419 task_tgid_nr(current), ## __VA_ARGS__) 420 421 /* The guest did something we don't support. */ 422 #define vcpu_unimpl(vcpu, fmt, ...) \ 423 kvm_pr_unimpl("vcpu%i, guest rIP: 0x%lx " fmt, \ 424 (vcpu)->vcpu_id, kvm_rip_read(vcpu), ## __VA_ARGS__) 425 426 #define vcpu_debug(vcpu, fmt, ...) \ 427 kvm_debug("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__) 428 #define vcpu_err(vcpu, fmt, ...) \ 429 kvm_err("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__) 430 431 static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i) 432 { 433 /* Pairs with smp_wmb() in kvm_vm_ioctl_create_vcpu, in case 434 * the caller has read kvm->online_vcpus before (as is the case 435 * for kvm_for_each_vcpu, for example). 436 */ 437 smp_rmb(); 438 return kvm->vcpus[i]; 439 } 440 441 #define kvm_for_each_vcpu(idx, vcpup, kvm) \ 442 for (idx = 0; \ 443 idx < atomic_read(&kvm->online_vcpus) && \ 444 (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \ 445 idx++) 446 447 static inline struct kvm_vcpu *kvm_get_vcpu_by_id(struct kvm *kvm, int id) 448 { 449 struct kvm_vcpu *vcpu; 450 int i; 451 452 if (id < 0 || id >= KVM_MAX_VCPUS) 453 return NULL; 454 vcpu = kvm_get_vcpu(kvm, id); 455 if (vcpu && vcpu->vcpu_id == id) 456 return vcpu; 457 kvm_for_each_vcpu(i, vcpu, kvm) 458 if (vcpu->vcpu_id == id) 459 return vcpu; 460 return NULL; 461 } 462 463 #define kvm_for_each_memslot(memslot, slots) \ 464 for (memslot = &slots->memslots[0]; \ 465 memslot < slots->memslots + KVM_MEM_SLOTS_NUM && memslot->npages;\ 466 memslot++) 467 468 int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id); 469 void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); 470 471 int __must_check vcpu_load(struct kvm_vcpu *vcpu); 472 void vcpu_put(struct kvm_vcpu *vcpu); 473 474 #ifdef __KVM_HAVE_IOAPIC 475 void kvm_vcpu_request_scan_ioapic(struct kvm *kvm); 476 void kvm_arch_post_irq_routing_update(struct kvm *kvm); 477 #else 478 static inline void kvm_vcpu_request_scan_ioapic(struct kvm *kvm) 479 { 480 } 481 static inline void kvm_arch_post_irq_routing_update(struct kvm *kvm) 482 { 483 } 484 #endif 485 486 #ifdef CONFIG_HAVE_KVM_IRQFD 487 int kvm_irqfd_init(void); 488 void kvm_irqfd_exit(void); 489 #else 490 static inline int kvm_irqfd_init(void) 491 { 492 return 0; 493 } 494 495 static inline void kvm_irqfd_exit(void) 496 { 497 } 498 #endif 499 int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, 500 struct module *module); 501 void kvm_exit(void); 502 503 void kvm_get_kvm(struct kvm *kvm); 504 void kvm_put_kvm(struct kvm *kvm); 505 506 static inline struct kvm_memslots *__kvm_memslots(struct kvm *kvm, int as_id) 507 { 508 return rcu_dereference_check(kvm->memslots[as_id], 509 srcu_read_lock_held(&kvm->srcu) 510 || lockdep_is_held(&kvm->slots_lock)); 511 } 512 513 static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm) 514 { 515 return __kvm_memslots(kvm, 0); 516 } 517 518 static inline struct kvm_memslots *kvm_vcpu_memslots(struct kvm_vcpu *vcpu) 519 { 520 int as_id = kvm_arch_vcpu_memslots_id(vcpu); 521 522 return __kvm_memslots(vcpu->kvm, as_id); 523 } 524 525 static inline struct kvm_memory_slot * 526 id_to_memslot(struct kvm_memslots *slots, int id) 527 { 528 int index = slots->id_to_index[id]; 529 struct kvm_memory_slot *slot; 530 531 slot = &slots->memslots[index]; 532 533 WARN_ON(slot->id != id); 534 return slot; 535 } 536 537 /* 538 * KVM_SET_USER_MEMORY_REGION ioctl allows the following operations: 539 * - create a new memory slot 540 * - delete an existing memory slot 541 * - modify an existing memory slot 542 * -- move it in the guest physical memory space 543 * -- just change its flags 544 * 545 * Since flags can be changed by some of these operations, the following 546 * differentiation is the best we can do for __kvm_set_memory_region(): 547 */ 548 enum kvm_mr_change { 549 KVM_MR_CREATE, 550 KVM_MR_DELETE, 551 KVM_MR_MOVE, 552 KVM_MR_FLAGS_ONLY, 553 }; 554 555 int kvm_set_memory_region(struct kvm *kvm, 556 const struct kvm_userspace_memory_region *mem); 557 int __kvm_set_memory_region(struct kvm *kvm, 558 const struct kvm_userspace_memory_region *mem); 559 void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free, 560 struct kvm_memory_slot *dont); 561 int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, 562 unsigned long npages); 563 void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots); 564 int kvm_arch_prepare_memory_region(struct kvm *kvm, 565 struct kvm_memory_slot *memslot, 566 const struct kvm_userspace_memory_region *mem, 567 enum kvm_mr_change change); 568 void kvm_arch_commit_memory_region(struct kvm *kvm, 569 const struct kvm_userspace_memory_region *mem, 570 const struct kvm_memory_slot *old, 571 const struct kvm_memory_slot *new, 572 enum kvm_mr_change change); 573 bool kvm_largepages_enabled(void); 574 void kvm_disable_largepages(void); 575 /* flush all memory translations */ 576 void kvm_arch_flush_shadow_all(struct kvm *kvm); 577 /* flush memory translations pointing to 'slot' */ 578 void kvm_arch_flush_shadow_memslot(struct kvm *kvm, 579 struct kvm_memory_slot *slot); 580 581 int gfn_to_page_many_atomic(struct kvm_memory_slot *slot, gfn_t gfn, 582 struct page **pages, int nr_pages); 583 584 struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); 585 unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn); 586 unsigned long gfn_to_hva_prot(struct kvm *kvm, gfn_t gfn, bool *writable); 587 unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn); 588 unsigned long gfn_to_hva_memslot_prot(struct kvm_memory_slot *slot, gfn_t gfn, 589 bool *writable); 590 void kvm_release_page_clean(struct page *page); 591 void kvm_release_page_dirty(struct page *page); 592 void kvm_set_page_accessed(struct page *page); 593 594 kvm_pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn); 595 kvm_pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn); 596 kvm_pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault, 597 bool *writable); 598 kvm_pfn_t gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn); 599 kvm_pfn_t gfn_to_pfn_memslot_atomic(struct kvm_memory_slot *slot, gfn_t gfn); 600 kvm_pfn_t __gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn, 601 bool atomic, bool *async, bool write_fault, 602 bool *writable); 603 604 void kvm_release_pfn_clean(kvm_pfn_t pfn); 605 void kvm_set_pfn_dirty(kvm_pfn_t pfn); 606 void kvm_set_pfn_accessed(kvm_pfn_t pfn); 607 void kvm_get_pfn(kvm_pfn_t pfn); 608 609 int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, 610 int len); 611 int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data, 612 unsigned long len); 613 int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); 614 int kvm_read_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, 615 void *data, unsigned long len); 616 int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, 617 int offset, int len); 618 int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, 619 unsigned long len); 620 int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, 621 void *data, unsigned long len); 622 int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc, 623 gpa_t gpa, unsigned long len); 624 int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); 625 int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); 626 struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); 627 bool kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); 628 unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn); 629 void mark_page_dirty(struct kvm *kvm, gfn_t gfn); 630 631 struct kvm_memslots *kvm_vcpu_memslots(struct kvm_vcpu *vcpu); 632 struct kvm_memory_slot *kvm_vcpu_gfn_to_memslot(struct kvm_vcpu *vcpu, gfn_t gfn); 633 kvm_pfn_t kvm_vcpu_gfn_to_pfn_atomic(struct kvm_vcpu *vcpu, gfn_t gfn); 634 kvm_pfn_t kvm_vcpu_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn); 635 struct page *kvm_vcpu_gfn_to_page(struct kvm_vcpu *vcpu, gfn_t gfn); 636 unsigned long kvm_vcpu_gfn_to_hva(struct kvm_vcpu *vcpu, gfn_t gfn); 637 unsigned long kvm_vcpu_gfn_to_hva_prot(struct kvm_vcpu *vcpu, gfn_t gfn, bool *writable); 638 int kvm_vcpu_read_guest_page(struct kvm_vcpu *vcpu, gfn_t gfn, void *data, int offset, 639 int len); 640 int kvm_vcpu_read_guest_atomic(struct kvm_vcpu *vcpu, gpa_t gpa, void *data, 641 unsigned long len); 642 int kvm_vcpu_read_guest(struct kvm_vcpu *vcpu, gpa_t gpa, void *data, 643 unsigned long len); 644 int kvm_vcpu_write_guest_page(struct kvm_vcpu *vcpu, gfn_t gfn, const void *data, 645 int offset, int len); 646 int kvm_vcpu_write_guest(struct kvm_vcpu *vcpu, gpa_t gpa, const void *data, 647 unsigned long len); 648 void kvm_vcpu_mark_page_dirty(struct kvm_vcpu *vcpu, gfn_t gfn); 649 650 void kvm_vcpu_block(struct kvm_vcpu *vcpu); 651 void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu); 652 void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu); 653 void kvm_vcpu_kick(struct kvm_vcpu *vcpu); 654 int kvm_vcpu_yield_to(struct kvm_vcpu *target); 655 void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu); 656 void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); 657 void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); 658 659 void kvm_flush_remote_tlbs(struct kvm *kvm); 660 void kvm_reload_remote_mmus(struct kvm *kvm); 661 bool kvm_make_all_cpus_request(struct kvm *kvm, unsigned int req); 662 663 long kvm_arch_dev_ioctl(struct file *filp, 664 unsigned int ioctl, unsigned long arg); 665 long kvm_arch_vcpu_ioctl(struct file *filp, 666 unsigned int ioctl, unsigned long arg); 667 int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf); 668 669 int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext); 670 671 int kvm_get_dirty_log(struct kvm *kvm, 672 struct kvm_dirty_log *log, int *is_dirty); 673 674 int kvm_get_dirty_log_protect(struct kvm *kvm, 675 struct kvm_dirty_log *log, bool *is_dirty); 676 677 void kvm_arch_mmu_enable_log_dirty_pt_masked(struct kvm *kvm, 678 struct kvm_memory_slot *slot, 679 gfn_t gfn_offset, 680 unsigned long mask); 681 682 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, 683 struct kvm_dirty_log *log); 684 685 int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_level, 686 bool line_status); 687 long kvm_arch_vm_ioctl(struct file *filp, 688 unsigned int ioctl, unsigned long arg); 689 690 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); 691 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); 692 693 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, 694 struct kvm_translation *tr); 695 696 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); 697 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); 698 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, 699 struct kvm_sregs *sregs); 700 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, 701 struct kvm_sregs *sregs); 702 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, 703 struct kvm_mp_state *mp_state); 704 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, 705 struct kvm_mp_state *mp_state); 706 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, 707 struct kvm_guest_debug *dbg); 708 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); 709 710 int kvm_arch_init(void *opaque); 711 void kvm_arch_exit(void); 712 713 int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); 714 void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu); 715 716 void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu); 717 718 void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu); 719 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); 720 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); 721 struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); 722 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu); 723 void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu); 724 void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu); 725 726 int kvm_arch_hardware_enable(void); 727 void kvm_arch_hardware_disable(void); 728 int kvm_arch_hardware_setup(void); 729 void kvm_arch_hardware_unsetup(void); 730 void kvm_arch_check_processor_compat(void *rtn); 731 int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu); 732 int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu); 733 734 void *kvm_kvzalloc(unsigned long size); 735 736 #ifndef __KVM_HAVE_ARCH_VM_ALLOC 737 static inline struct kvm *kvm_arch_alloc_vm(void) 738 { 739 return kzalloc(sizeof(struct kvm), GFP_KERNEL); 740 } 741 742 static inline void kvm_arch_free_vm(struct kvm *kvm) 743 { 744 kfree(kvm); 745 } 746 #endif 747 748 #ifdef __KVM_HAVE_ARCH_NONCOHERENT_DMA 749 void kvm_arch_register_noncoherent_dma(struct kvm *kvm); 750 void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm); 751 bool kvm_arch_has_noncoherent_dma(struct kvm *kvm); 752 #else 753 static inline void kvm_arch_register_noncoherent_dma(struct kvm *kvm) 754 { 755 } 756 757 static inline void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm) 758 { 759 } 760 761 static inline bool kvm_arch_has_noncoherent_dma(struct kvm *kvm) 762 { 763 return false; 764 } 765 #endif 766 #ifdef __KVM_HAVE_ARCH_ASSIGNED_DEVICE 767 void kvm_arch_start_assignment(struct kvm *kvm); 768 void kvm_arch_end_assignment(struct kvm *kvm); 769 bool kvm_arch_has_assigned_device(struct kvm *kvm); 770 #else 771 static inline void kvm_arch_start_assignment(struct kvm *kvm) 772 { 773 } 774 775 static inline void kvm_arch_end_assignment(struct kvm *kvm) 776 { 777 } 778 779 static inline bool kvm_arch_has_assigned_device(struct kvm *kvm) 780 { 781 return false; 782 } 783 #endif 784 785 static inline wait_queue_head_t *kvm_arch_vcpu_wq(struct kvm_vcpu *vcpu) 786 { 787 #ifdef __KVM_HAVE_ARCH_WQP 788 return vcpu->arch.wqp; 789 #else 790 return &vcpu->wq; 791 #endif 792 } 793 794 #ifdef __KVM_HAVE_ARCH_INTC_INITIALIZED 795 /* 796 * returns true if the virtual interrupt controller is initialized and 797 * ready to accept virtual IRQ. On some architectures the virtual interrupt 798 * controller is dynamically instantiated and this is not always true. 799 */ 800 bool kvm_arch_intc_initialized(struct kvm *kvm); 801 #else 802 static inline bool kvm_arch_intc_initialized(struct kvm *kvm) 803 { 804 return true; 805 } 806 #endif 807 808 int kvm_arch_init_vm(struct kvm *kvm, unsigned long type); 809 void kvm_arch_destroy_vm(struct kvm *kvm); 810 void kvm_arch_sync_events(struct kvm *kvm); 811 812 int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu); 813 void kvm_vcpu_kick(struct kvm_vcpu *vcpu); 814 815 bool kvm_is_reserved_pfn(kvm_pfn_t pfn); 816 817 struct kvm_irq_ack_notifier { 818 struct hlist_node link; 819 unsigned gsi; 820 void (*irq_acked)(struct kvm_irq_ack_notifier *kian); 821 }; 822 823 int kvm_irq_map_gsi(struct kvm *kvm, 824 struct kvm_kernel_irq_routing_entry *entries, int gsi); 825 int kvm_irq_map_chip_pin(struct kvm *kvm, unsigned irqchip, unsigned pin); 826 827 int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level, 828 bool line_status); 829 int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm, 830 int irq_source_id, int level, bool line_status); 831 int kvm_arch_set_irq_inatomic(struct kvm_kernel_irq_routing_entry *e, 832 struct kvm *kvm, int irq_source_id, 833 int level, bool line_status); 834 bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin); 835 void kvm_notify_acked_gsi(struct kvm *kvm, int gsi); 836 void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin); 837 void kvm_register_irq_ack_notifier(struct kvm *kvm, 838 struct kvm_irq_ack_notifier *kian); 839 void kvm_unregister_irq_ack_notifier(struct kvm *kvm, 840 struct kvm_irq_ack_notifier *kian); 841 int kvm_request_irq_source_id(struct kvm *kvm); 842 void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id); 843 844 #ifdef CONFIG_KVM_DEVICE_ASSIGNMENT 845 int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot); 846 void kvm_iommu_unmap_pages(struct kvm *kvm, struct kvm_memory_slot *slot); 847 #else 848 static inline int kvm_iommu_map_pages(struct kvm *kvm, 849 struct kvm_memory_slot *slot) 850 { 851 return 0; 852 } 853 854 static inline void kvm_iommu_unmap_pages(struct kvm *kvm, 855 struct kvm_memory_slot *slot) 856 { 857 } 858 #endif 859 860 /* must be called with irqs disabled */ 861 static inline void __kvm_guest_enter(void) 862 { 863 guest_enter(); 864 /* KVM does not hold any references to rcu protected data when it 865 * switches CPU into a guest mode. In fact switching to a guest mode 866 * is very similar to exiting to userspace from rcu point of view. In 867 * addition CPU may stay in a guest mode for quite a long time (up to 868 * one time slice). Lets treat guest mode as quiescent state, just like 869 * we do with user-mode execution. 870 */ 871 if (!context_tracking_cpu_is_enabled()) 872 rcu_virt_note_context_switch(smp_processor_id()); 873 } 874 875 /* must be called with irqs disabled */ 876 static inline void __kvm_guest_exit(void) 877 { 878 guest_exit(); 879 } 880 881 static inline void kvm_guest_enter(void) 882 { 883 unsigned long flags; 884 885 local_irq_save(flags); 886 __kvm_guest_enter(); 887 local_irq_restore(flags); 888 } 889 890 static inline void kvm_guest_exit(void) 891 { 892 unsigned long flags; 893 894 local_irq_save(flags); 895 __kvm_guest_exit(); 896 local_irq_restore(flags); 897 } 898 899 /* 900 * search_memslots() and __gfn_to_memslot() are here because they are 901 * used in non-modular code in arch/powerpc/kvm/book3s_hv_rm_mmu.c. 902 * gfn_to_memslot() itself isn't here as an inline because that would 903 * bloat other code too much. 904 */ 905 static inline struct kvm_memory_slot * 906 search_memslots(struct kvm_memslots *slots, gfn_t gfn) 907 { 908 int start = 0, end = slots->used_slots; 909 int slot = atomic_read(&slots->lru_slot); 910 struct kvm_memory_slot *memslots = slots->memslots; 911 912 if (gfn >= memslots[slot].base_gfn && 913 gfn < memslots[slot].base_gfn + memslots[slot].npages) 914 return &memslots[slot]; 915 916 while (start < end) { 917 slot = start + (end - start) / 2; 918 919 if (gfn >= memslots[slot].base_gfn) 920 end = slot; 921 else 922 start = slot + 1; 923 } 924 925 if (gfn >= memslots[start].base_gfn && 926 gfn < memslots[start].base_gfn + memslots[start].npages) { 927 atomic_set(&slots->lru_slot, start); 928 return &memslots[start]; 929 } 930 931 return NULL; 932 } 933 934 static inline struct kvm_memory_slot * 935 __gfn_to_memslot(struct kvm_memslots *slots, gfn_t gfn) 936 { 937 return search_memslots(slots, gfn); 938 } 939 940 static inline unsigned long 941 __gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn) 942 { 943 return slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE; 944 } 945 946 static inline int memslot_id(struct kvm *kvm, gfn_t gfn) 947 { 948 return gfn_to_memslot(kvm, gfn)->id; 949 } 950 951 static inline gfn_t 952 hva_to_gfn_memslot(unsigned long hva, struct kvm_memory_slot *slot) 953 { 954 gfn_t gfn_offset = (hva - slot->userspace_addr) >> PAGE_SHIFT; 955 956 return slot->base_gfn + gfn_offset; 957 } 958 959 static inline gpa_t gfn_to_gpa(gfn_t gfn) 960 { 961 return (gpa_t)gfn << PAGE_SHIFT; 962 } 963 964 static inline gfn_t gpa_to_gfn(gpa_t gpa) 965 { 966 return (gfn_t)(gpa >> PAGE_SHIFT); 967 } 968 969 static inline hpa_t pfn_to_hpa(kvm_pfn_t pfn) 970 { 971 return (hpa_t)pfn << PAGE_SHIFT; 972 } 973 974 static inline bool kvm_is_error_gpa(struct kvm *kvm, gpa_t gpa) 975 { 976 unsigned long hva = gfn_to_hva(kvm, gpa_to_gfn(gpa)); 977 978 return kvm_is_error_hva(hva); 979 } 980 981 enum kvm_stat_kind { 982 KVM_STAT_VM, 983 KVM_STAT_VCPU, 984 }; 985 986 struct kvm_stats_debugfs_item { 987 const char *name; 988 int offset; 989 enum kvm_stat_kind kind; 990 }; 991 extern struct kvm_stats_debugfs_item debugfs_entries[]; 992 extern struct dentry *kvm_debugfs_dir; 993 994 #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) 995 static inline int mmu_notifier_retry(struct kvm *kvm, unsigned long mmu_seq) 996 { 997 if (unlikely(kvm->mmu_notifier_count)) 998 return 1; 999 /* 1000 * Ensure the read of mmu_notifier_count happens before the read 1001 * of mmu_notifier_seq. This interacts with the smp_wmb() in 1002 * mmu_notifier_invalidate_range_end to make sure that the caller 1003 * either sees the old (non-zero) value of mmu_notifier_count or 1004 * the new (incremented) value of mmu_notifier_seq. 1005 * PowerPC Book3s HV KVM calls this under a per-page lock 1006 * rather than under kvm->mmu_lock, for scalability, so 1007 * can't rely on kvm->mmu_lock to keep things ordered. 1008 */ 1009 smp_rmb(); 1010 if (kvm->mmu_notifier_seq != mmu_seq) 1011 return 1; 1012 return 0; 1013 } 1014 #endif 1015 1016 #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING 1017 1018 #ifdef CONFIG_S390 1019 #define KVM_MAX_IRQ_ROUTES 4096 //FIXME: we can have more than that... 1020 #else 1021 #define KVM_MAX_IRQ_ROUTES 1024 1022 #endif 1023 1024 int kvm_setup_default_irq_routing(struct kvm *kvm); 1025 int kvm_setup_empty_irq_routing(struct kvm *kvm); 1026 int kvm_set_irq_routing(struct kvm *kvm, 1027 const struct kvm_irq_routing_entry *entries, 1028 unsigned nr, 1029 unsigned flags); 1030 int kvm_set_routing_entry(struct kvm_kernel_irq_routing_entry *e, 1031 const struct kvm_irq_routing_entry *ue); 1032 void kvm_free_irq_routing(struct kvm *kvm); 1033 1034 #else 1035 1036 static inline void kvm_free_irq_routing(struct kvm *kvm) {} 1037 1038 #endif 1039 1040 int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi); 1041 1042 #ifdef CONFIG_HAVE_KVM_EVENTFD 1043 1044 void kvm_eventfd_init(struct kvm *kvm); 1045 int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args); 1046 1047 #ifdef CONFIG_HAVE_KVM_IRQFD 1048 int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args); 1049 void kvm_irqfd_release(struct kvm *kvm); 1050 void kvm_irq_routing_update(struct kvm *); 1051 #else 1052 static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) 1053 { 1054 return -EINVAL; 1055 } 1056 1057 static inline void kvm_irqfd_release(struct kvm *kvm) {} 1058 #endif 1059 1060 #else 1061 1062 static inline void kvm_eventfd_init(struct kvm *kvm) {} 1063 1064 static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) 1065 { 1066 return -EINVAL; 1067 } 1068 1069 static inline void kvm_irqfd_release(struct kvm *kvm) {} 1070 1071 #ifdef CONFIG_HAVE_KVM_IRQCHIP 1072 static inline void kvm_irq_routing_update(struct kvm *kvm) 1073 { 1074 } 1075 #endif 1076 void kvm_arch_irq_routing_update(struct kvm *kvm); 1077 1078 static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) 1079 { 1080 return -ENOSYS; 1081 } 1082 1083 #endif /* CONFIG_HAVE_KVM_EVENTFD */ 1084 1085 #ifdef CONFIG_KVM_APIC_ARCHITECTURE 1086 bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu); 1087 #else 1088 static inline bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu) { return true; } 1089 #endif 1090 1091 static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu) 1092 { 1093 set_bit(req, &vcpu->requests); 1094 } 1095 1096 static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu) 1097 { 1098 if (test_bit(req, &vcpu->requests)) { 1099 clear_bit(req, &vcpu->requests); 1100 return true; 1101 } else { 1102 return false; 1103 } 1104 } 1105 1106 extern bool kvm_rebooting; 1107 1108 struct kvm_device { 1109 struct kvm_device_ops *ops; 1110 struct kvm *kvm; 1111 void *private; 1112 struct list_head vm_node; 1113 }; 1114 1115 /* create, destroy, and name are mandatory */ 1116 struct kvm_device_ops { 1117 const char *name; 1118 int (*create)(struct kvm_device *dev, u32 type); 1119 1120 /* 1121 * Destroy is responsible for freeing dev. 1122 * 1123 * Destroy may be called before or after destructors are called 1124 * on emulated I/O regions, depending on whether a reference is 1125 * held by a vcpu or other kvm component that gets destroyed 1126 * after the emulated I/O. 1127 */ 1128 void (*destroy)(struct kvm_device *dev); 1129 1130 int (*set_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); 1131 int (*get_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); 1132 int (*has_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); 1133 long (*ioctl)(struct kvm_device *dev, unsigned int ioctl, 1134 unsigned long arg); 1135 }; 1136 1137 void kvm_device_get(struct kvm_device *dev); 1138 void kvm_device_put(struct kvm_device *dev); 1139 struct kvm_device *kvm_device_from_filp(struct file *filp); 1140 int kvm_register_device_ops(struct kvm_device_ops *ops, u32 type); 1141 void kvm_unregister_device_ops(u32 type); 1142 1143 extern struct kvm_device_ops kvm_mpic_ops; 1144 extern struct kvm_device_ops kvm_xics_ops; 1145 extern struct kvm_device_ops kvm_arm_vgic_v2_ops; 1146 extern struct kvm_device_ops kvm_arm_vgic_v3_ops; 1147 1148 #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT 1149 1150 static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) 1151 { 1152 vcpu->spin_loop.in_spin_loop = val; 1153 } 1154 static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) 1155 { 1156 vcpu->spin_loop.dy_eligible = val; 1157 } 1158 1159 #else /* !CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ 1160 1161 static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) 1162 { 1163 } 1164 1165 static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) 1166 { 1167 } 1168 #endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ 1169 1170 #ifdef CONFIG_HAVE_KVM_IRQ_BYPASS 1171 int kvm_arch_irq_bypass_add_producer(struct irq_bypass_consumer *, 1172 struct irq_bypass_producer *); 1173 void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer *, 1174 struct irq_bypass_producer *); 1175 void kvm_arch_irq_bypass_stop(struct irq_bypass_consumer *); 1176 void kvm_arch_irq_bypass_start(struct irq_bypass_consumer *); 1177 int kvm_arch_update_irqfd_routing(struct kvm *kvm, unsigned int host_irq, 1178 uint32_t guest_irq, bool set); 1179 #endif /* CONFIG_HAVE_KVM_IRQ_BYPASS */ 1180 1181 #endif 1182