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/marker.h>
  19 #include <linux/msi.h>
  20 #include <asm/signal.h>
  21
  22 #include <linux/kvm.h>
  23 #include <linux/kvm_para.h>
  24
  25 #include <linux/kvm_types.h>
  26
  27 #include <asm/kvm_host.h>
  28
  29 /*
  30  * vcpu->requests bit members
  31  */
  32 #define KVM_REQ_TLB_FLUSH          0
  33 #define KVM_REQ_MIGRATE_TIMER      1
  34 #define KVM_REQ_REPORT_TPR_ACCESS  2
  35 #define KVM_REQ_MMU_RELOAD         3
  36 #define KVM_REQ_TRIPLE_FAULT       4
  37 #define KVM_REQ_PENDING_TIMER      5
  38 #define KVM_REQ_UNHALT             6
  39 #define KVM_REQ_MMU_SYNC           7
  40 #define KVM_REQ_KVMCLOCK_UPDATE    8
  41 #define KVM_REQ_KICK               9
  42
  43 #define KVM_USERSPACE_IRQ_SOURCE_ID     0
  44
  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 struct kvm_io_device *kvm_io_bus_find_dev(struct kvm_io_bus *bus,
  63                                           gpa_t addr, int len, int is_write);
  64 void kvm_io_bus_register_dev(struct kvm_io_bus *bus,
  65                              struct kvm_io_device *dev);
  66
  67 struct kvm_vcpu {
  68         struct kvm *kvm;
  69 #ifdef CONFIG_PREEMPT_NOTIFIERS
  70         struct preempt_notifier preempt_notifier;
  71 #endif
  72         int vcpu_id;
  73         struct mutex mutex;
  74         int   cpu;
  75         struct kvm_run *run;
  76         unsigned long requests;
  77         unsigned long guest_debug;
  78         int fpu_active;
  79         int guest_fpu_loaded;
  80         wait_queue_head_t wq;
  81         int sigset_active;
  82         sigset_t sigset;
  83         struct kvm_vcpu_stat stat;
  84
  85 #ifdef CONFIG_HAS_IOMEM
  86         int mmio_needed;
  87         int mmio_read_completed;
  88         int mmio_is_write;
  89         int mmio_size;
  90         unsigned char mmio_data[8];
  91         gpa_t mmio_phys_addr;
  92 #endif
  93
  94         struct kvm_vcpu_arch arch;
  95 };
  96
  97 struct kvm_memory_slot {
  98         gfn_t base_gfn;
  99         unsigned long npages;
 100         unsigned long flags;
 101         unsigned long *rmap;
 102         unsigned long *dirty_bitmap;
 103         struct {
 104                 unsigned long rmap_pde;
 105                 int write_count;
 106         } *lpage_info;
 107         unsigned long userspace_addr;
 108         int user_alloc;
 109 };
 110
 111 struct kvm_kernel_irq_routing_entry {
 112         u32 gsi;
 113         int (*set)(struct kvm_kernel_irq_routing_entry *e,
 114                     struct kvm *kvm, int level);
 115         union {
 116                 struct {
 117                         unsigned irqchip;
 118                         unsigned pin;
 119                 } irqchip;
 120                 struct msi_msg msi;
 121         };
 122         struct list_head link;
 123 };
 124
 125 struct kvm {
 126         struct mutex lock; /* protects the vcpus array and APIC accesses */
 127         spinlock_t mmu_lock;
 128         struct rw_semaphore slots_lock;
 129         struct mm_struct *mm; /* userspace tied to this vm */
 130         int nmemslots;
 131         struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS +
 132                                         KVM_PRIVATE_MEM_SLOTS];
 133         struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
 134         struct list_head vm_list;
 135         struct kvm_io_bus mmio_bus;
 136         struct kvm_io_bus pio_bus;
 137         struct kvm_vm_stat stat;
 138         struct kvm_arch arch;
 139         atomic_t users_count;
 140 #ifdef KVM_COALESCED_MMIO_PAGE_OFFSET
 141         struct kvm_coalesced_mmio_dev *coalesced_mmio_dev;
 142         struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
 143 #endif
 144
 145 #ifdef CONFIG_HAVE_KVM_IRQCHIP
 146         struct list_head irq_routing; /* of kvm_kernel_irq_routing_entry */
 147         struct hlist_head mask_notifier_list;
 148 #endif
 149
 150 #ifdef KVM_ARCH_WANT_MMU_NOTIFIER
 151         struct mmu_notifier mmu_notifier;
 152         unsigned long mmu_notifier_seq;
 153         long mmu_notifier_count;
 154 #endif
 155 };
 156
 157 /* The guest did something we don't support. */
 158 #define pr_unimpl(vcpu, fmt, ...)                                       \
 159  do {                                                                   \
 160         if (printk_ratelimit())                                         \
 161                 printk(KERN_ERR "kvm: %i: cpu%i " fmt,                  \
 162                        current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \
 163  } while (0)
 164
 165 #define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
 166 #define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
 167
 168 int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id);
 169 void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
 170
 171 void vcpu_load(struct kvm_vcpu *vcpu);
 172 void vcpu_put(struct kvm_vcpu *vcpu);
 173
 174 int kvm_init(void *opaque, unsigned int vcpu_size,
 175                   struct module *module);
 176 void kvm_exit(void);
 177
 178 void kvm_get_kvm(struct kvm *kvm);
 179 void kvm_put_kvm(struct kvm *kvm);
 180
 181 #define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
 182 #define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
 183 static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
 184 struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva);
 185
 186 extern struct page *bad_page;
 187 extern pfn_t bad_pfn;
 188
 189 int is_error_page(struct page *page);
 190 int is_error_pfn(pfn_t pfn);
 191 int kvm_is_error_hva(unsigned long addr);
 192 int kvm_set_memory_region(struct kvm *kvm,
 193                           struct kvm_userspace_memory_region *mem,
 194                           int user_alloc);
 195 int __kvm_set_memory_region(struct kvm *kvm,
 196                             struct kvm_userspace_memory_region *mem,
 197                             int user_alloc);
 198 int kvm_arch_set_memory_region(struct kvm *kvm,
 199                                 struct kvm_userspace_memory_region *mem,
 200                                 struct kvm_memory_slot old,
 201                                 int user_alloc);
 202 void kvm_arch_flush_shadow(struct kvm *kvm);
 203 gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn);
 204 struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn);
 205 unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn);
 206 void kvm_release_page_clean(struct page *page);
 207 void kvm_release_page_dirty(struct page *page);
 208 void kvm_set_page_dirty(struct page *page);
 209 void kvm_set_page_accessed(struct page *page);
 210
 211 pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn);
 212 void kvm_release_pfn_dirty(pfn_t);
 213 void kvm_release_pfn_clean(pfn_t pfn);
 214 void kvm_set_pfn_dirty(pfn_t pfn);
 215 void kvm_set_pfn_accessed(pfn_t pfn);
 216 void kvm_get_pfn(pfn_t pfn);
 217
 218 int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset,
 219                         int len);
 220 int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data,
 221                           unsigned long len);
 222 int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len);
 223 int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data,
 224                          int offset, int len);
 225 int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data,
 226                     unsigned long len);
 227 int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
 228 int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
 229 struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
 230 int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
 231 void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
 232
 233 void kvm_vcpu_block(struct kvm_vcpu *vcpu);
 234 void kvm_resched(struct kvm_vcpu *vcpu);
 235 void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
 236 void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
 237 void kvm_flush_remote_tlbs(struct kvm *kvm);
 238 void kvm_reload_remote_mmus(struct kvm *kvm);
 239
 240 long kvm_arch_dev_ioctl(struct file *filp,
 241                         unsigned int ioctl, unsigned long arg);
 242 long kvm_arch_vcpu_ioctl(struct file *filp,
 243                          unsigned int ioctl, unsigned long arg);
 244 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
 245 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
 246
 247 int kvm_dev_ioctl_check_extension(long ext);
 248
 249 int kvm_get_dirty_log(struct kvm *kvm,
 250                         struct kvm_dirty_log *log, int *is_dirty);
 251 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
 252                                 struct kvm_dirty_log *log);
 253
 254 int kvm_vm_ioctl_set_memory_region(struct kvm *kvm,
 255                                    struct
 256                                    kvm_userspace_memory_region *mem,
 257                                    int user_alloc);
 258 long kvm_arch_vm_ioctl(struct file *filp,
 259                        unsigned int ioctl, unsigned long arg);
 260
 261 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
 262 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
 263
 264 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
 265                                     struct kvm_translation *tr);
 266
 267 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
 268 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
 269 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
 270                                   struct kvm_sregs *sregs);
 271 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
 272                                   struct kvm_sregs *sregs);
 273 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
 274                                     struct kvm_mp_state *mp_state);
 275 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
 276                                     struct kvm_mp_state *mp_state);
 277 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
 278                                         struct kvm_guest_debug *dbg);
 279 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run);
 280
 281 int kvm_arch_init(void *opaque);
 282 void kvm_arch_exit(void);
 283
 284 int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu);
 285 void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu);
 286
 287 void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu);
 288 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
 289 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
 290 struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id);
 291 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu);
 292 void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu);
 293
 294 int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu);
 295 void kvm_arch_hardware_enable(void *garbage);
 296 void kvm_arch_hardware_disable(void *garbage);
 297 int kvm_arch_hardware_setup(void);
 298 void kvm_arch_hardware_unsetup(void);
 299 void kvm_arch_check_processor_compat(void *rtn);
 300 int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu);
 301 int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
 302
 303 void kvm_free_physmem(struct kvm *kvm);
 304
 305 struct  kvm *kvm_arch_create_vm(void);
 306 void kvm_arch_destroy_vm(struct kvm *kvm);
 307 void kvm_free_all_assigned_devices(struct kvm *kvm);
 308 void kvm_arch_sync_events(struct kvm *kvm);
 309
 310 int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
 311 int kvm_cpu_has_interrupt(struct kvm_vcpu *v);
 312 int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu);
 313 void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
 314
 315 int kvm_is_mmio_pfn(pfn_t pfn);
 316
 317 struct kvm_irq_ack_notifier {
 318         struct hlist_node link;
 319         unsigned gsi;
 320         void (*irq_acked)(struct kvm_irq_ack_notifier *kian);
 321 };
 322
 323 #define KVM_ASSIGNED_MSIX_PENDING               0x1
 324 struct kvm_guest_msix_entry {
 325         u32 vector;
 326         u16 entry;
 327         u16 flags;
 328 };
 329
 330 struct kvm_assigned_dev_kernel {
 331         struct kvm_irq_ack_notifier ack_notifier;
 332         struct work_struct interrupt_work;
 333         struct list_head list;
 334         int assigned_dev_id;
 335         int host_busnr;
 336         int host_devfn;
 337         unsigned int entries_nr;
 338         int host_irq;
 339         bool host_irq_disabled;
 340         struct msix_entry *host_msix_entries;
 341         int guest_irq;
 342         struct kvm_guest_msix_entry *guest_msix_entries;
 343         unsigned long irq_requested_type;
 344         int irq_source_id;
 345         int flags;
 346         struct pci_dev *dev;
 347         struct kvm *kvm;
 348         spinlock_t assigned_dev_lock;
 349 };
 350
 351 struct kvm_irq_mask_notifier {
 352         void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked);
 353         int irq;
 354         struct hlist_node link;
 355 };
 356
 357 void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq,
 358                                     struct kvm_irq_mask_notifier *kimn);
 359 void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq,
 360                                       struct kvm_irq_mask_notifier *kimn);
 361 void kvm_fire_mask_notifiers(struct kvm *kvm, int irq, bool mask);
 362
 363 int kvm_set_irq(struct kvm *kvm, int irq_source_id, int irq, int level);
 364 void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin);
 365 void kvm_register_irq_ack_notifier(struct kvm *kvm,
 366                                    struct kvm_irq_ack_notifier *kian);
 367 void kvm_unregister_irq_ack_notifier(struct kvm_irq_ack_notifier *kian);
 368 int kvm_request_irq_source_id(struct kvm *kvm);
 369 void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id);
 370
 371 /* For vcpu->arch.iommu_flags */
 372 #define KVM_IOMMU_CACHE_COHERENCY       0x1
 373
 374 #ifdef CONFIG_IOMMU_API
 375 int kvm_iommu_map_pages(struct kvm *kvm, gfn_t base_gfn,
 376                         unsigned long npages);
 377 int kvm_iommu_map_guest(struct kvm *kvm);
 378 int kvm_iommu_unmap_guest(struct kvm *kvm);
 379 int kvm_assign_device(struct kvm *kvm,
 380                       struct kvm_assigned_dev_kernel *assigned_dev);
 381 int kvm_deassign_device(struct kvm *kvm,
 382                         struct kvm_assigned_dev_kernel *assigned_dev);
 383 #else /* CONFIG_IOMMU_API */
 384 static inline int kvm_iommu_map_pages(struct kvm *kvm,
 385                                       gfn_t base_gfn,
 386                                       unsigned long npages)
 387 {
 388         return 0;
 389 }
 390
 391 static inline int kvm_iommu_map_guest(struct kvm *kvm)
 392 {
 393         return -ENODEV;
 394 }
 395
 396 static inline int kvm_iommu_unmap_guest(struct kvm *kvm)
 397 {
 398         return 0;
 399 }
 400
 401 static inline int kvm_assign_device(struct kvm *kvm,
 402                 struct kvm_assigned_dev_kernel *assigned_dev)
 403 {
 404         return 0;
 405 }
 406
 407 static inline int kvm_deassign_device(struct kvm *kvm,
 408                 struct kvm_assigned_dev_kernel *assigned_dev)
 409 {
 410         return 0;
 411 }
 412 #endif /* CONFIG_IOMMU_API */
 413
 414 static inline void kvm_guest_enter(void)
 415 {
 416         account_system_vtime(current);
 417         current->flags |= PF_VCPU;
 418 }
 419
 420 static inline void kvm_guest_exit(void)
 421 {
 422         account_system_vtime(current);
 423         current->flags &= ~PF_VCPU;
 424 }
 425
 426 static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot)
 427 {
 428         return slot - kvm->memslots;
 429 }
 430
 431 static inline gpa_t gfn_to_gpa(gfn_t gfn)
 432 {
 433         return (gpa_t)gfn << PAGE_SHIFT;
 434 }
 435
 436 static inline hpa_t pfn_to_hpa(pfn_t pfn)
 437 {
 438         return (hpa_t)pfn << PAGE_SHIFT;
 439 }
 440
 441 static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu)
 442 {
 443         set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests);
 444 }
 445
 446 enum kvm_stat_kind {
 447         KVM_STAT_VM,
 448         KVM_STAT_VCPU,
 449 };
 450
 451 struct kvm_stats_debugfs_item {
 452         const char *name;
 453         int offset;
 454         enum kvm_stat_kind kind;
 455         struct dentry *dentry;
 456 };
 457 extern struct kvm_stats_debugfs_item debugfs_entries[];
 458 extern struct dentry *kvm_debugfs_dir;
 459
 460 #define KVMTRACE_5D(evt, vcpu, d1, d2, d3, d4, d5, name) \
 461         trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
 462                                                 vcpu, 5, d1, d2, d3, d4, d5)
 463 #define KVMTRACE_4D(evt, vcpu, d1, d2, d3, d4, name) \
 464         trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
 465                                                 vcpu, 4, d1, d2, d3, d4, 0)
 466 #define KVMTRACE_3D(evt, vcpu, d1, d2, d3, name) \
 467         trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
 468                                                 vcpu, 3, d1, d2, d3, 0, 0)
 469 #define KVMTRACE_2D(evt, vcpu, d1, d2, name) \
 470         trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
 471                                                 vcpu, 2, d1, d2, 0, 0, 0)
 472 #define KVMTRACE_1D(evt, vcpu, d1, name) \
 473         trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
 474                                                 vcpu, 1, d1, 0, 0, 0, 0)
 475 #define KVMTRACE_0D(evt, vcpu, name) \
 476         trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
 477                                                 vcpu, 0, 0, 0, 0, 0, 0)
 478
 479 #ifdef CONFIG_KVM_TRACE
 480 int kvm_trace_ioctl(unsigned int ioctl, unsigned long arg);
 481 void kvm_trace_cleanup(void);
 482 #else
 483 static inline
 484 int kvm_trace_ioctl(unsigned int ioctl, unsigned long arg)
 485 {
 486         return -EINVAL;
 487 }
 488 #define kvm_trace_cleanup() ((void)0)
 489 #endif
 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 #endif