include/linux/kvm_host.h

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