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