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edf88417 AK |
1 | #ifndef __KVM_HOST_H |
2 | #define __KVM_HOST_H | |
6aa8b732 AK |
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> | |
e56a7a28 | 10 | #include <linux/hardirq.h> |
6aa8b732 AK |
11 | #include <linux/list.h> |
12 | #include <linux/mutex.h> | |
13 | #include <linux/spinlock.h> | |
06ff0d37 MR |
14 | #include <linux/signal.h> |
15 | #include <linux/sched.h> | |
187f1882 | 16 | #include <linux/bug.h> |
6aa8b732 | 17 | #include <linux/mm.h> |
b297e672 | 18 | #include <linux/mmu_notifier.h> |
15ad7146 | 19 | #include <linux/preempt.h> |
0937c48d | 20 | #include <linux/msi.h> |
d89f5eff | 21 | #include <linux/slab.h> |
bd2b53b2 | 22 | #include <linux/rcupdate.h> |
bd80158a | 23 | #include <linux/ratelimit.h> |
83f09228 | 24 | #include <linux/err.h> |
e8edc6e0 | 25 | #include <asm/signal.h> |
6aa8b732 | 26 | |
6aa8b732 | 27 | #include <linux/kvm.h> |
102d8325 | 28 | #include <linux/kvm_para.h> |
6aa8b732 | 29 | |
edf88417 | 30 | #include <linux/kvm_types.h> |
d77a39d9 | 31 | |
edf88417 | 32 | #include <asm/kvm_host.h> |
d657a98e | 33 | |
cef4dea0 AK |
34 | #ifndef KVM_MMIO_SIZE |
35 | #define KVM_MMIO_SIZE 8 | |
36 | #endif | |
37 | ||
67b29204 XG |
38 | /* |
39 | * The bit 16 ~ bit 31 of kvm_memory_region::flags are internally used | |
40 | * in kvm, other bits are visible for userspace which are defined in | |
41 | * include/linux/kvm_h. | |
42 | */ | |
43 | #define KVM_MEMSLOT_INVALID (1UL << 16) | |
44 | ||
f78146b0 AK |
45 | /* |
46 | * If we support unaligned MMIO, at most one fragment will be split into two: | |
47 | */ | |
48 | #ifdef KVM_UNALIGNED_MMIO | |
49 | # define KVM_EXTRA_MMIO_FRAGMENTS 1 | |
50 | #else | |
51 | # define KVM_EXTRA_MMIO_FRAGMENTS 0 | |
52 | #endif | |
53 | ||
54 | #define KVM_USER_MMIO_SIZE 8 | |
55 | ||
56 | #define KVM_MAX_MMIO_FRAGMENTS \ | |
57 | (KVM_MMIO_SIZE / KVM_USER_MMIO_SIZE + KVM_EXTRA_MMIO_FRAGMENTS) | |
58 | ||
9c5b1172 XG |
59 | /* |
60 | * For the normal pfn, the highest 12 bits should be zero, | |
61 | * so we can mask these bits to indicate the error. | |
62 | */ | |
63 | #define KVM_PFN_ERR_MASK (0xfffULL << 52) | |
64 | ||
65 | #define KVM_PFN_ERR_FAULT (KVM_PFN_ERR_MASK) | |
66 | #define KVM_PFN_ERR_HWPOISON (KVM_PFN_ERR_MASK + 1) | |
67 | #define KVM_PFN_ERR_BAD (KVM_PFN_ERR_MASK + 2) | |
6c8ee57b | 68 | |
9c5b1172 | 69 | static inline bool is_error_pfn(pfn_t pfn) |
83f09228 | 70 | { |
9c5b1172 | 71 | return !!(pfn & KVM_PFN_ERR_MASK); |
83f09228 XG |
72 | } |
73 | ||
9c5b1172 | 74 | static inline bool is_noslot_pfn(pfn_t pfn) |
83f09228 | 75 | { |
9c5b1172 | 76 | return pfn == KVM_PFN_ERR_BAD; |
83f09228 XG |
77 | } |
78 | ||
9c5b1172 | 79 | static inline bool is_invalid_pfn(pfn_t pfn) |
83f09228 XG |
80 | { |
81 | return !is_noslot_pfn(pfn) && is_error_pfn(pfn); | |
82 | } | |
83 | ||
6cede2e6 XG |
84 | #define KVM_ERR_PTR_BAD_PAGE (ERR_PTR(-ENOENT)) |
85 | ||
9c5b1172 | 86 | static inline bool is_error_page(struct page *page) |
6cede2e6 XG |
87 | { |
88 | return IS_ERR(page); | |
89 | } | |
90 | ||
d9e368d6 AK |
91 | /* |
92 | * vcpu->requests bit members | |
93 | */ | |
3176bc3e | 94 | #define KVM_REQ_TLB_FLUSH 0 |
2f52d58c | 95 | #define KVM_REQ_MIGRATE_TIMER 1 |
b209749f | 96 | #define KVM_REQ_REPORT_TPR_ACCESS 2 |
2e53d63a | 97 | #define KVM_REQ_MMU_RELOAD 3 |
71c4dfaf | 98 | #define KVM_REQ_TRIPLE_FAULT 4 |
06e05645 | 99 | #define KVM_REQ_PENDING_TIMER 5 |
d7690175 | 100 | #define KVM_REQ_UNHALT 6 |
4731d4c7 | 101 | #define KVM_REQ_MMU_SYNC 7 |
34c238a1 | 102 | #define KVM_REQ_CLOCK_UPDATE 8 |
32f88400 | 103 | #define KVM_REQ_KICK 9 |
02daab21 | 104 | #define KVM_REQ_DEACTIVATE_FPU 10 |
3842d135 | 105 | #define KVM_REQ_EVENT 11 |
af585b92 | 106 | #define KVM_REQ_APF_HALT 12 |
c9aaa895 | 107 | #define KVM_REQ_STEAL_UPDATE 13 |
7460fb4a | 108 | #define KVM_REQ_NMI 14 |
d6185f20 | 109 | #define KVM_REQ_IMMEDIATE_EXIT 15 |
f5132b01 GN |
110 | #define KVM_REQ_PMU 16 |
111 | #define KVM_REQ_PMI 17 | |
6aa8b732 | 112 | |
5550af4d SY |
113 | #define KVM_USERSPACE_IRQ_SOURCE_ID 0 |
114 | ||
6c474694 | 115 | struct kvm; |
6aa8b732 | 116 | struct kvm_vcpu; |
c16f862d | 117 | extern struct kmem_cache *kvm_vcpu_cache; |
6aa8b732 | 118 | |
743eeb0b SL |
119 | struct kvm_io_range { |
120 | gpa_t addr; | |
121 | int len; | |
122 | struct kvm_io_device *dev; | |
123 | }; | |
124 | ||
786a9f88 | 125 | #define NR_IOBUS_DEVS 1000 |
a1300716 | 126 | |
2eeb2e94 GH |
127 | struct kvm_io_bus { |
128 | int dev_count; | |
a1300716 | 129 | struct kvm_io_range range[]; |
2eeb2e94 GH |
130 | }; |
131 | ||
e93f8a0f MT |
132 | enum kvm_bus { |
133 | KVM_MMIO_BUS, | |
134 | KVM_PIO_BUS, | |
135 | KVM_NR_BUSES | |
136 | }; | |
137 | ||
138 | int kvm_io_bus_write(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, | |
139 | int len, const void *val); | |
140 | int kvm_io_bus_read(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, int len, | |
bda9020e | 141 | void *val); |
743eeb0b SL |
142 | int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, |
143 | int len, struct kvm_io_device *dev); | |
e93f8a0f MT |
144 | int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx, |
145 | struct kvm_io_device *dev); | |
2eeb2e94 | 146 | |
af585b92 GN |
147 | #ifdef CONFIG_KVM_ASYNC_PF |
148 | struct kvm_async_pf { | |
149 | struct work_struct work; | |
150 | struct list_head link; | |
151 | struct list_head queue; | |
152 | struct kvm_vcpu *vcpu; | |
153 | struct mm_struct *mm; | |
154 | gva_t gva; | |
155 | unsigned long addr; | |
156 | struct kvm_arch_async_pf arch; | |
157 | struct page *page; | |
158 | bool done; | |
159 | }; | |
160 | ||
161 | void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu); | |
162 | void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu); | |
163 | int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, gfn_t gfn, | |
164 | struct kvm_arch_async_pf *arch); | |
344d9588 | 165 | int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu); |
af585b92 GN |
166 | #endif |
167 | ||
6b7e2d09 XG |
168 | enum { |
169 | OUTSIDE_GUEST_MODE, | |
170 | IN_GUEST_MODE, | |
c142786c AK |
171 | EXITING_GUEST_MODE, |
172 | READING_SHADOW_PAGE_TABLES, | |
6b7e2d09 XG |
173 | }; |
174 | ||
f78146b0 AK |
175 | /* |
176 | * Sometimes a large or cross-page mmio needs to be broken up into separate | |
177 | * exits for userspace servicing. | |
178 | */ | |
179 | struct kvm_mmio_fragment { | |
180 | gpa_t gpa; | |
181 | void *data; | |
182 | unsigned len; | |
183 | }; | |
184 | ||
d17fbbf7 ZX |
185 | struct kvm_vcpu { |
186 | struct kvm *kvm; | |
31bb117e | 187 | #ifdef CONFIG_PREEMPT_NOTIFIERS |
d17fbbf7 | 188 | struct preempt_notifier preempt_notifier; |
31bb117e | 189 | #endif |
6b7e2d09 | 190 | int cpu; |
d17fbbf7 | 191 | int vcpu_id; |
6b7e2d09 XG |
192 | int srcu_idx; |
193 | int mode; | |
d17fbbf7 | 194 | unsigned long requests; |
d0bfb940 | 195 | unsigned long guest_debug; |
6b7e2d09 XG |
196 | |
197 | struct mutex mutex; | |
198 | struct kvm_run *run; | |
f656ce01 | 199 | |
d17fbbf7 | 200 | int fpu_active; |
2acf923e | 201 | int guest_fpu_loaded, guest_xcr0_loaded; |
d17fbbf7 | 202 | wait_queue_head_t wq; |
34bb10b7 | 203 | struct pid *pid; |
d17fbbf7 ZX |
204 | int sigset_active; |
205 | sigset_t sigset; | |
206 | struct kvm_vcpu_stat stat; | |
207 | ||
34c16eec | 208 | #ifdef CONFIG_HAS_IOMEM |
d17fbbf7 ZX |
209 | int mmio_needed; |
210 | int mmio_read_completed; | |
211 | int mmio_is_write; | |
f78146b0 AK |
212 | int mmio_cur_fragment; |
213 | int mmio_nr_fragments; | |
214 | struct kvm_mmio_fragment mmio_fragments[KVM_MAX_MMIO_FRAGMENTS]; | |
34c16eec | 215 | #endif |
1165f5fe | 216 | |
af585b92 GN |
217 | #ifdef CONFIG_KVM_ASYNC_PF |
218 | struct { | |
219 | u32 queued; | |
220 | struct list_head queue; | |
221 | struct list_head done; | |
222 | spinlock_t lock; | |
223 | } async_pf; | |
224 | #endif | |
225 | ||
4c088493 R |
226 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
227 | /* | |
228 | * Cpu relax intercept or pause loop exit optimization | |
229 | * in_spin_loop: set when a vcpu does a pause loop exit | |
230 | * or cpu relax intercepted. | |
231 | * dy_eligible: indicates whether vcpu is eligible for directed yield. | |
232 | */ | |
233 | struct { | |
234 | bool in_spin_loop; | |
235 | bool dy_eligible; | |
236 | } spin_loop; | |
237 | #endif | |
d657a98e ZX |
238 | struct kvm_vcpu_arch arch; |
239 | }; | |
240 | ||
6b7e2d09 XG |
241 | static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu) |
242 | { | |
243 | return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE); | |
244 | } | |
245 | ||
660c22c4 TY |
246 | /* |
247 | * Some of the bitops functions do not support too long bitmaps. | |
248 | * This number must be determined not to exceed such limits. | |
249 | */ | |
250 | #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1) | |
251 | ||
6aa8b732 AK |
252 | struct kvm_memory_slot { |
253 | gfn_t base_gfn; | |
254 | unsigned long npages; | |
255 | unsigned long flags; | |
6aa8b732 | 256 | unsigned long *dirty_bitmap; |
db3fe4eb | 257 | struct kvm_arch_memory_slot arch; |
8a7ae055 | 258 | unsigned long userspace_addr; |
80b14b5b | 259 | int user_alloc; |
e36d96f7 | 260 | int id; |
6aa8b732 AK |
261 | }; |
262 | ||
87bf6e7d TY |
263 | static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot) |
264 | { | |
265 | return ALIGN(memslot->npages, BITS_PER_LONG) / 8; | |
266 | } | |
267 | ||
399ec807 AK |
268 | struct kvm_kernel_irq_routing_entry { |
269 | u32 gsi; | |
5116d8f6 | 270 | u32 type; |
4925663a | 271 | int (*set)(struct kvm_kernel_irq_routing_entry *e, |
1a6e4a8c | 272 | struct kvm *kvm, int irq_source_id, int level); |
399ec807 AK |
273 | union { |
274 | struct { | |
275 | unsigned irqchip; | |
276 | unsigned pin; | |
277 | } irqchip; | |
79950e10 | 278 | struct msi_msg msi; |
399ec807 | 279 | }; |
46e624b9 GN |
280 | struct hlist_node link; |
281 | }; | |
282 | ||
3e71f88b GN |
283 | #ifdef __KVM_HAVE_IOAPIC |
284 | ||
46e624b9 | 285 | struct kvm_irq_routing_table { |
3e71f88b | 286 | int chip[KVM_NR_IRQCHIPS][KVM_IOAPIC_NUM_PINS]; |
46e624b9 GN |
287 | struct kvm_kernel_irq_routing_entry *rt_entries; |
288 | u32 nr_rt_entries; | |
289 | /* | |
290 | * Array indexed by gsi. Each entry contains list of irq chips | |
291 | * the gsi is connected to. | |
292 | */ | |
293 | struct hlist_head map[0]; | |
399ec807 AK |
294 | }; |
295 | ||
3e71f88b GN |
296 | #else |
297 | ||
298 | struct kvm_irq_routing_table {}; | |
299 | ||
300 | #endif | |
301 | ||
93a5cef0 XG |
302 | #ifndef KVM_MEM_SLOTS_NUM |
303 | #define KVM_MEM_SLOTS_NUM (KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS) | |
304 | #endif | |
305 | ||
bf3e05bc XG |
306 | /* |
307 | * Note: | |
308 | * memslots are not sorted by id anymore, please use id_to_memslot() | |
309 | * to get the memslot by its id. | |
310 | */ | |
46a26bf5 | 311 | struct kvm_memslots { |
49c7754c | 312 | u64 generation; |
93a5cef0 | 313 | struct kvm_memory_slot memslots[KVM_MEM_SLOTS_NUM]; |
f85e2cb5 XG |
314 | /* The mapping table from slot id to the index in memslots[]. */ |
315 | int id_to_index[KVM_MEM_SLOTS_NUM]; | |
46a26bf5 MT |
316 | }; |
317 | ||
6aa8b732 | 318 | struct kvm { |
aaee2c94 | 319 | spinlock_t mmu_lock; |
79fac95e | 320 | struct mutex slots_lock; |
6d4e4c4f | 321 | struct mm_struct *mm; /* userspace tied to this vm */ |
46a26bf5 | 322 | struct kvm_memslots *memslots; |
bc6678a3 | 323 | struct srcu_struct srcu; |
73880c80 GN |
324 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
325 | u32 bsp_vcpu_id; | |
73880c80 | 326 | #endif |
fb3f0f51 | 327 | struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; |
73880c80 | 328 | atomic_t online_vcpus; |
217ece61 | 329 | int last_boosted_vcpu; |
133de902 | 330 | struct list_head vm_list; |
60eead79 | 331 | struct mutex lock; |
e93f8a0f | 332 | struct kvm_io_bus *buses[KVM_NR_BUSES]; |
721eecbf GH |
333 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
334 | struct { | |
335 | spinlock_t lock; | |
336 | struct list_head items; | |
337 | } irqfds; | |
d34e6b17 | 338 | struct list_head ioeventfds; |
721eecbf | 339 | #endif |
ba1389b7 | 340 | struct kvm_vm_stat stat; |
d69fb81f | 341 | struct kvm_arch arch; |
d39f13b0 | 342 | atomic_t users_count; |
5f94c174 | 343 | #ifdef KVM_COALESCED_MMIO_PAGE_OFFSET |
5f94c174 | 344 | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; |
2b3c246a SL |
345 | spinlock_t ring_lock; |
346 | struct list_head coalesced_zones; | |
5f94c174 | 347 | #endif |
e930bffe | 348 | |
60eead79 | 349 | struct mutex irq_lock; |
75858a84 | 350 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 MT |
351 | /* |
352 | * Update side is protected by irq_lock and, | |
353 | * if configured, irqfds.lock. | |
354 | */ | |
4b6a2872 | 355 | struct kvm_irq_routing_table __rcu *irq_routing; |
75858a84 | 356 | struct hlist_head mask_notifier_list; |
136bdfee | 357 | struct hlist_head irq_ack_notifier_list; |
75858a84 AK |
358 | #endif |
359 | ||
36c1ed82 | 360 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
e930bffe AA |
361 | struct mmu_notifier mmu_notifier; |
362 | unsigned long mmu_notifier_seq; | |
363 | long mmu_notifier_count; | |
364 | #endif | |
5c663a15 | 365 | long tlbs_dirty; |
6aa8b732 AK |
366 | }; |
367 | ||
a737f256 CD |
368 | #define kvm_err(fmt, ...) \ |
369 | pr_err("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
370 | #define kvm_info(fmt, ...) \ | |
371 | pr_info("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
372 | #define kvm_debug(fmt, ...) \ | |
373 | pr_debug("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
374 | #define kvm_pr_unimpl(fmt, ...) \ | |
375 | pr_err_ratelimited("kvm [%i]: " fmt, \ | |
376 | task_tgid_nr(current), ## __VA_ARGS__) | |
f0242478 | 377 | |
a737f256 CD |
378 | /* The guest did something we don't support. */ |
379 | #define vcpu_unimpl(vcpu, fmt, ...) \ | |
380 | kvm_pr_unimpl("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__) | |
6aa8b732 | 381 | |
988a2cae GN |
382 | static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i) |
383 | { | |
384 | smp_rmb(); | |
385 | return kvm->vcpus[i]; | |
386 | } | |
387 | ||
388 | #define kvm_for_each_vcpu(idx, vcpup, kvm) \ | |
b42fc3cb JM |
389 | for (idx = 0; \ |
390 | idx < atomic_read(&kvm->online_vcpus) && \ | |
391 | (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \ | |
392 | idx++) | |
988a2cae | 393 | |
be6ba0f0 XG |
394 | #define kvm_for_each_memslot(memslot, slots) \ |
395 | for (memslot = &slots->memslots[0]; \ | |
bf3e05bc XG |
396 | memslot < slots->memslots + KVM_MEM_SLOTS_NUM && memslot->npages;\ |
397 | memslot++) | |
be6ba0f0 | 398 | |
fb3f0f51 RR |
399 | int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id); |
400 | void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); | |
401 | ||
313a3dc7 CO |
402 | void vcpu_load(struct kvm_vcpu *vcpu); |
403 | void vcpu_put(struct kvm_vcpu *vcpu); | |
404 | ||
0ee75bea | 405 | int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, |
c16f862d | 406 | struct module *module); |
cb498ea2 | 407 | void kvm_exit(void); |
6aa8b732 | 408 | |
d39f13b0 IE |
409 | void kvm_get_kvm(struct kvm *kvm); |
410 | void kvm_put_kvm(struct kvm *kvm); | |
be593d62 | 411 | void update_memslots(struct kvm_memslots *slots, struct kvm_memory_slot *new); |
d39f13b0 | 412 | |
90d83dc3 LJ |
413 | static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm) |
414 | { | |
415 | return rcu_dereference_check(kvm->memslots, | |
416 | srcu_read_lock_held(&kvm->srcu) | |
417 | || lockdep_is_held(&kvm->slots_lock)); | |
418 | } | |
419 | ||
28a37544 XG |
420 | static inline struct kvm_memory_slot * |
421 | id_to_memslot(struct kvm_memslots *slots, int id) | |
422 | { | |
f85e2cb5 XG |
423 | int index = slots->id_to_index[id]; |
424 | struct kvm_memory_slot *slot; | |
bf3e05bc | 425 | |
f85e2cb5 | 426 | slot = &slots->memslots[index]; |
bf3e05bc | 427 | |
f85e2cb5 XG |
428 | WARN_ON(slot->id != id); |
429 | return slot; | |
28a37544 XG |
430 | } |
431 | ||
f9d46eb0 | 432 | int kvm_is_error_hva(unsigned long addr); |
210c7c4d IE |
433 | int kvm_set_memory_region(struct kvm *kvm, |
434 | struct kvm_userspace_memory_region *mem, | |
435 | int user_alloc); | |
f78e0e2e SY |
436 | int __kvm_set_memory_region(struct kvm *kvm, |
437 | struct kvm_userspace_memory_region *mem, | |
438 | int user_alloc); | |
db3fe4eb TY |
439 | void kvm_arch_free_memslot(struct kvm_memory_slot *free, |
440 | struct kvm_memory_slot *dont); | |
441 | int kvm_arch_create_memslot(struct kvm_memory_slot *slot, unsigned long npages); | |
f7784b8e MT |
442 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
443 | struct kvm_memory_slot *memslot, | |
444 | struct kvm_memory_slot old, | |
445 | struct kvm_userspace_memory_region *mem, | |
446 | int user_alloc); | |
447 | void kvm_arch_commit_memory_region(struct kvm *kvm, | |
0de10343 ZX |
448 | struct kvm_userspace_memory_region *mem, |
449 | struct kvm_memory_slot old, | |
450 | int user_alloc); | |
db3fe4eb | 451 | bool kvm_largepages_enabled(void); |
54dee993 | 452 | void kvm_disable_largepages(void); |
34d4cb8f | 453 | void kvm_arch_flush_shadow(struct kvm *kvm); |
a983fb23 | 454 | |
48987781 XG |
455 | int gfn_to_page_many_atomic(struct kvm *kvm, gfn_t gfn, struct page **pages, |
456 | int nr_pages); | |
457 | ||
954bbbc2 | 458 | struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); |
05da4558 | 459 | unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn); |
b4231d61 IE |
460 | void kvm_release_page_clean(struct page *page); |
461 | void kvm_release_page_dirty(struct page *page); | |
35149e21 AL |
462 | void kvm_set_page_dirty(struct page *page); |
463 | void kvm_set_page_accessed(struct page *page); | |
464 | ||
d5661048 | 465 | pfn_t hva_to_pfn_atomic(unsigned long addr); |
365fb3fd | 466 | pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn); |
612819c3 MT |
467 | pfn_t gfn_to_pfn_async(struct kvm *kvm, gfn_t gfn, bool *async, |
468 | bool write_fault, bool *writable); | |
35149e21 | 469 | pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn); |
612819c3 MT |
470 | pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault, |
471 | bool *writable); | |
d5661048 | 472 | pfn_t gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
32cad84f | 473 | void kvm_release_pfn_dirty(pfn_t pfn); |
35149e21 AL |
474 | void kvm_release_pfn_clean(pfn_t pfn); |
475 | void kvm_set_pfn_dirty(pfn_t pfn); | |
476 | void kvm_set_pfn_accessed(pfn_t pfn); | |
477 | void kvm_get_pfn(pfn_t pfn); | |
478 | ||
195aefde IE |
479 | int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, |
480 | int len); | |
7ec54588 MT |
481 | int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data, |
482 | unsigned long len); | |
195aefde | 483 | int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); |
e03b644f GN |
484 | int kvm_read_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
485 | void *data, unsigned long len); | |
195aefde IE |
486 | int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, |
487 | int offset, int len); | |
488 | int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, | |
489 | unsigned long len); | |
49c7754c GN |
490 | int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
491 | void *data, unsigned long len); | |
492 | int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc, | |
493 | gpa_t gpa); | |
195aefde IE |
494 | int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); |
495 | int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); | |
6aa8b732 | 496 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); |
e0d62c7f | 497 | int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); |
8f0b1ab6 | 498 | unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn); |
6aa8b732 | 499 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); |
49c7754c GN |
500 | void mark_page_dirty_in_slot(struct kvm *kvm, struct kvm_memory_slot *memslot, |
501 | gfn_t gfn); | |
6aa8b732 | 502 | |
8776e519 | 503 | void kvm_vcpu_block(struct kvm_vcpu *vcpu); |
b6d33834 | 504 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
41628d33 | 505 | bool kvm_vcpu_yield_to(struct kvm_vcpu *target); |
d255f4f2 | 506 | void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu); |
6aa8b732 | 507 | void kvm_resched(struct kvm_vcpu *vcpu); |
7702fd1f AK |
508 | void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); |
509 | void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); | |
a4ee1ca4 | 510 | |
d9e368d6 | 511 | void kvm_flush_remote_tlbs(struct kvm *kvm); |
2e53d63a | 512 | void kvm_reload_remote_mmus(struct kvm *kvm); |
6aa8b732 | 513 | |
043405e1 CO |
514 | long kvm_arch_dev_ioctl(struct file *filp, |
515 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 CO |
516 | long kvm_arch_vcpu_ioctl(struct file *filp, |
517 | unsigned int ioctl, unsigned long arg); | |
5b1c1493 | 518 | int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf); |
018d00d2 ZX |
519 | |
520 | int kvm_dev_ioctl_check_extension(long ext); | |
521 | ||
5bb064dc ZX |
522 | int kvm_get_dirty_log(struct kvm *kvm, |
523 | struct kvm_dirty_log *log, int *is_dirty); | |
524 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, | |
525 | struct kvm_dirty_log *log); | |
526 | ||
1fe779f8 CO |
527 | int kvm_vm_ioctl_set_memory_region(struct kvm *kvm, |
528 | struct | |
529 | kvm_userspace_memory_region *mem, | |
530 | int user_alloc); | |
23d43cf9 | 531 | int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_level); |
1fe779f8 CO |
532 | long kvm_arch_vm_ioctl(struct file *filp, |
533 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 | 534 | |
d0752060 HB |
535 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); |
536 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); | |
537 | ||
8b006791 ZX |
538 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, |
539 | struct kvm_translation *tr); | |
540 | ||
b6c7a5dc HB |
541 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); |
542 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); | |
543 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
544 | struct kvm_sregs *sregs); | |
545 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
546 | struct kvm_sregs *sregs); | |
62d9f0db MT |
547 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
548 | struct kvm_mp_state *mp_state); | |
549 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
550 | struct kvm_mp_state *mp_state); | |
d0bfb940 JK |
551 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
552 | struct kvm_guest_debug *dbg); | |
b6c7a5dc HB |
553 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); |
554 | ||
f8c16bba ZX |
555 | int kvm_arch_init(void *opaque); |
556 | void kvm_arch_exit(void); | |
043405e1 | 557 | |
e9b11c17 ZX |
558 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); |
559 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu); | |
560 | ||
561 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu); | |
562 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
563 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); | |
564 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); | |
26e5215f | 565 | int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu); |
d40ccc62 | 566 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu); |
e9b11c17 ZX |
567 | |
568 | int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu); | |
10474ae8 | 569 | int kvm_arch_hardware_enable(void *garbage); |
e9b11c17 ZX |
570 | void kvm_arch_hardware_disable(void *garbage); |
571 | int kvm_arch_hardware_setup(void); | |
572 | void kvm_arch_hardware_unsetup(void); | |
573 | void kvm_arch_check_processor_compat(void *rtn); | |
1d737c8a | 574 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu); |
b6d33834 | 575 | int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu); |
e9b11c17 | 576 | |
d19a9cd2 ZX |
577 | void kvm_free_physmem(struct kvm *kvm); |
578 | ||
c1a7b32a TY |
579 | void *kvm_kvzalloc(unsigned long size); |
580 | void kvm_kvfree(const void *addr); | |
581 | ||
d89f5eff JK |
582 | #ifndef __KVM_HAVE_ARCH_VM_ALLOC |
583 | static inline struct kvm *kvm_arch_alloc_vm(void) | |
584 | { | |
585 | return kzalloc(sizeof(struct kvm), GFP_KERNEL); | |
586 | } | |
587 | ||
588 | static inline void kvm_arch_free_vm(struct kvm *kvm) | |
589 | { | |
590 | kfree(kvm); | |
591 | } | |
592 | #endif | |
593 | ||
b6d33834 CD |
594 | static inline wait_queue_head_t *kvm_arch_vcpu_wq(struct kvm_vcpu *vcpu) |
595 | { | |
2246f8b5 AG |
596 | #ifdef __KVM_HAVE_ARCH_WQP |
597 | return vcpu->arch.wqp; | |
598 | #else | |
b6d33834 | 599 | return &vcpu->wq; |
b6d33834 | 600 | #endif |
2246f8b5 | 601 | } |
b6d33834 | 602 | |
e08b9637 | 603 | int kvm_arch_init_vm(struct kvm *kvm, unsigned long type); |
d19a9cd2 | 604 | void kvm_arch_destroy_vm(struct kvm *kvm); |
8a98f664 | 605 | void kvm_free_all_assigned_devices(struct kvm *kvm); |
ad8ba2cd | 606 | void kvm_arch_sync_events(struct kvm *kvm); |
e9b11c17 | 607 | |
3d80840d | 608 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu); |
5736199a | 609 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
682c59a3 | 610 | |
a2766325 | 611 | bool kvm_is_mmio_pfn(pfn_t pfn); |
c77fb9dc | 612 | |
62c476c7 BAY |
613 | struct kvm_irq_ack_notifier { |
614 | struct hlist_node link; | |
615 | unsigned gsi; | |
616 | void (*irq_acked)(struct kvm_irq_ack_notifier *kian); | |
617 | }; | |
618 | ||
619 | struct kvm_assigned_dev_kernel { | |
620 | struct kvm_irq_ack_notifier ack_notifier; | |
62c476c7 BAY |
621 | struct list_head list; |
622 | int assigned_dev_id; | |
ab9f4ecb | 623 | int host_segnr; |
62c476c7 BAY |
624 | int host_busnr; |
625 | int host_devfn; | |
c1e01514 | 626 | unsigned int entries_nr; |
62c476c7 | 627 | int host_irq; |
defaf158 | 628 | bool host_irq_disabled; |
07700a94 | 629 | bool pci_2_3; |
c1e01514 | 630 | struct msix_entry *host_msix_entries; |
62c476c7 | 631 | int guest_irq; |
0645211c | 632 | struct msix_entry *guest_msix_entries; |
4f906c19 | 633 | unsigned long irq_requested_type; |
5550af4d | 634 | int irq_source_id; |
b653574a | 635 | int flags; |
62c476c7 BAY |
636 | struct pci_dev *dev; |
637 | struct kvm *kvm; | |
0645211c | 638 | spinlock_t intx_lock; |
cf9eeac4 | 639 | spinlock_t intx_mask_lock; |
1e001d49 | 640 | char irq_name[32]; |
f8fcfd77 | 641 | struct pci_saved_state *pci_saved_state; |
62c476c7 | 642 | }; |
75858a84 AK |
643 | |
644 | struct kvm_irq_mask_notifier { | |
645 | void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked); | |
646 | int irq; | |
647 | struct hlist_node link; | |
648 | }; | |
649 | ||
650 | void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq, | |
651 | struct kvm_irq_mask_notifier *kimn); | |
652 | void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq, | |
653 | struct kvm_irq_mask_notifier *kimn); | |
4a994358 GN |
654 | void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin, |
655 | bool mask); | |
75858a84 | 656 | |
46e624b9 GN |
657 | #ifdef __KVM_HAVE_IOAPIC |
658 | void kvm_get_intr_delivery_bitmask(struct kvm_ioapic *ioapic, | |
659 | union kvm_ioapic_redirect_entry *entry, | |
660 | unsigned long *deliver_bitmask); | |
661 | #endif | |
662 | int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level); | |
bd2b53b2 MT |
663 | int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm, |
664 | int irq_source_id, int level); | |
44882eed | 665 | void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin); |
3de42dc0 XZ |
666 | void kvm_register_irq_ack_notifier(struct kvm *kvm, |
667 | struct kvm_irq_ack_notifier *kian); | |
fa40a821 MT |
668 | void kvm_unregister_irq_ack_notifier(struct kvm *kvm, |
669 | struct kvm_irq_ack_notifier *kian); | |
5550af4d SY |
670 | int kvm_request_irq_source_id(struct kvm *kvm); |
671 | void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id); | |
62c476c7 | 672 | |
522c68c4 SY |
673 | /* For vcpu->arch.iommu_flags */ |
674 | #define KVM_IOMMU_CACHE_COHERENCY 0x1 | |
675 | ||
19de40a8 | 676 | #ifdef CONFIG_IOMMU_API |
3ad26d81 | 677 | int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
32f6daad | 678 | void kvm_iommu_unmap_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
260782bc | 679 | int kvm_iommu_map_guest(struct kvm *kvm); |
62c476c7 | 680 | int kvm_iommu_unmap_guest(struct kvm *kvm); |
260782bc WH |
681 | int kvm_assign_device(struct kvm *kvm, |
682 | struct kvm_assigned_dev_kernel *assigned_dev); | |
0a920356 WH |
683 | int kvm_deassign_device(struct kvm *kvm, |
684 | struct kvm_assigned_dev_kernel *assigned_dev); | |
19de40a8 | 685 | #else /* CONFIG_IOMMU_API */ |
62c476c7 | 686 | static inline int kvm_iommu_map_pages(struct kvm *kvm, |
d7a79b6c | 687 | struct kvm_memory_slot *slot) |
62c476c7 BAY |
688 | { |
689 | return 0; | |
690 | } | |
691 | ||
32f6daad AW |
692 | static inline void kvm_iommu_unmap_pages(struct kvm *kvm, |
693 | struct kvm_memory_slot *slot) | |
694 | { | |
695 | } | |
696 | ||
260782bc | 697 | static inline int kvm_iommu_map_guest(struct kvm *kvm) |
62c476c7 BAY |
698 | { |
699 | return -ENODEV; | |
700 | } | |
701 | ||
702 | static inline int kvm_iommu_unmap_guest(struct kvm *kvm) | |
703 | { | |
704 | return 0; | |
705 | } | |
260782bc WH |
706 | |
707 | static inline int kvm_assign_device(struct kvm *kvm, | |
708 | struct kvm_assigned_dev_kernel *assigned_dev) | |
709 | { | |
710 | return 0; | |
711 | } | |
0a920356 WH |
712 | |
713 | static inline int kvm_deassign_device(struct kvm *kvm, | |
714 | struct kvm_assigned_dev_kernel *assigned_dev) | |
715 | { | |
716 | return 0; | |
717 | } | |
19de40a8 | 718 | #endif /* CONFIG_IOMMU_API */ |
62c476c7 | 719 | |
d172fcd3 LV |
720 | static inline void kvm_guest_enter(void) |
721 | { | |
8fa22068 | 722 | BUG_ON(preemptible()); |
e56a7a28 | 723 | account_system_vtime(current); |
d172fcd3 | 724 | current->flags |= PF_VCPU; |
8fa22068 GN |
725 | /* KVM does not hold any references to rcu protected data when it |
726 | * switches CPU into a guest mode. In fact switching to a guest mode | |
727 | * is very similar to exiting to userspase from rcu point of view. In | |
728 | * addition CPU may stay in a guest mode for quite a long time (up to | |
729 | * one time slice). Lets treat guest mode as quiescent state, just like | |
730 | * we do with user-mode execution. | |
731 | */ | |
732 | rcu_virt_note_context_switch(smp_processor_id()); | |
d172fcd3 LV |
733 | } |
734 | ||
735 | static inline void kvm_guest_exit(void) | |
736 | { | |
e56a7a28 | 737 | account_system_vtime(current); |
d172fcd3 LV |
738 | current->flags &= ~PF_VCPU; |
739 | } | |
740 | ||
9d4cba7f PM |
741 | /* |
742 | * search_memslots() and __gfn_to_memslot() are here because they are | |
743 | * used in non-modular code in arch/powerpc/kvm/book3s_hv_rm_mmu.c. | |
744 | * gfn_to_memslot() itself isn't here as an inline because that would | |
745 | * bloat other code too much. | |
746 | */ | |
747 | static inline struct kvm_memory_slot * | |
748 | search_memslots(struct kvm_memslots *slots, gfn_t gfn) | |
749 | { | |
750 | struct kvm_memory_slot *memslot; | |
751 | ||
752 | kvm_for_each_memslot(memslot, slots) | |
753 | if (gfn >= memslot->base_gfn && | |
754 | gfn < memslot->base_gfn + memslot->npages) | |
755 | return memslot; | |
756 | ||
757 | return NULL; | |
758 | } | |
759 | ||
760 | static inline struct kvm_memory_slot * | |
761 | __gfn_to_memslot(struct kvm_memslots *slots, gfn_t gfn) | |
762 | { | |
763 | return search_memslots(slots, gfn); | |
764 | } | |
765 | ||
0ee8dcb8 XG |
766 | static inline int memslot_id(struct kvm *kvm, gfn_t gfn) |
767 | { | |
768 | return gfn_to_memslot(kvm, gfn)->id; | |
769 | } | |
770 | ||
fb03cb6f TY |
771 | static inline gfn_t gfn_to_index(gfn_t gfn, gfn_t base_gfn, int level) |
772 | { | |
773 | /* KVM_HPAGE_GFN_SHIFT(PT_PAGE_TABLE_LEVEL) must be 0. */ | |
774 | return (gfn >> KVM_HPAGE_GFN_SHIFT(level)) - | |
775 | (base_gfn >> KVM_HPAGE_GFN_SHIFT(level)); | |
776 | } | |
777 | ||
d19a748b TY |
778 | static inline gfn_t |
779 | hva_to_gfn_memslot(unsigned long hva, struct kvm_memory_slot *slot) | |
780 | { | |
781 | gfn_t gfn_offset = (hva - slot->userspace_addr) >> PAGE_SHIFT; | |
782 | ||
783 | return slot->base_gfn + gfn_offset; | |
784 | } | |
785 | ||
887c08ac XG |
786 | static inline unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, |
787 | gfn_t gfn) | |
788 | { | |
789 | return slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE; | |
790 | } | |
791 | ||
1755fbcc AK |
792 | static inline gpa_t gfn_to_gpa(gfn_t gfn) |
793 | { | |
794 | return (gpa_t)gfn << PAGE_SHIFT; | |
795 | } | |
6aa8b732 | 796 | |
c30a358d JR |
797 | static inline gfn_t gpa_to_gfn(gpa_t gpa) |
798 | { | |
799 | return (gfn_t)(gpa >> PAGE_SHIFT); | |
800 | } | |
801 | ||
62c476c7 BAY |
802 | static inline hpa_t pfn_to_hpa(pfn_t pfn) |
803 | { | |
804 | return (hpa_t)pfn << PAGE_SHIFT; | |
805 | } | |
806 | ||
2f599714 | 807 | static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu) |
2f52d58c AK |
808 | { |
809 | set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests); | |
810 | } | |
811 | ||
ba1389b7 AK |
812 | enum kvm_stat_kind { |
813 | KVM_STAT_VM, | |
814 | KVM_STAT_VCPU, | |
815 | }; | |
816 | ||
417bc304 HB |
817 | struct kvm_stats_debugfs_item { |
818 | const char *name; | |
819 | int offset; | |
ba1389b7 | 820 | enum kvm_stat_kind kind; |
417bc304 HB |
821 | struct dentry *dentry; |
822 | }; | |
823 | extern struct kvm_stats_debugfs_item debugfs_entries[]; | |
76f7c879 | 824 | extern struct dentry *kvm_debugfs_dir; |
d4c9ff2d | 825 | |
36c1ed82 | 826 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
e930bffe AA |
827 | static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_seq) |
828 | { | |
829 | if (unlikely(vcpu->kvm->mmu_notifier_count)) | |
830 | return 1; | |
831 | /* | |
a355aa54 PM |
832 | * Ensure the read of mmu_notifier_count happens before the read |
833 | * of mmu_notifier_seq. This interacts with the smp_wmb() in | |
834 | * mmu_notifier_invalidate_range_end to make sure that the caller | |
835 | * either sees the old (non-zero) value of mmu_notifier_count or | |
836 | * the new (incremented) value of mmu_notifier_seq. | |
837 | * PowerPC Book3s HV KVM calls this under a per-page lock | |
838 | * rather than under kvm->mmu_lock, for scalability, so | |
839 | * can't rely on kvm->mmu_lock to keep things ordered. | |
e930bffe | 840 | */ |
a355aa54 | 841 | smp_rmb(); |
e930bffe AA |
842 | if (vcpu->kvm->mmu_notifier_seq != mmu_seq) |
843 | return 1; | |
844 | return 0; | |
845 | } | |
846 | #endif | |
847 | ||
9900b4b4 | 848 | #ifdef KVM_CAP_IRQ_ROUTING |
399ec807 AK |
849 | |
850 | #define KVM_MAX_IRQ_ROUTES 1024 | |
851 | ||
852 | int kvm_setup_default_irq_routing(struct kvm *kvm); | |
853 | int kvm_set_irq_routing(struct kvm *kvm, | |
854 | const struct kvm_irq_routing_entry *entries, | |
855 | unsigned nr, | |
856 | unsigned flags); | |
857 | void kvm_free_irq_routing(struct kvm *kvm); | |
858 | ||
07975ad3 JK |
859 | int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi); |
860 | ||
399ec807 AK |
861 | #else |
862 | ||
863 | static inline void kvm_free_irq_routing(struct kvm *kvm) {} | |
864 | ||
865 | #endif | |
866 | ||
721eecbf GH |
867 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
868 | ||
d34e6b17 | 869 | void kvm_eventfd_init(struct kvm *kvm); |
d4db2935 | 870 | int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args); |
721eecbf | 871 | void kvm_irqfd_release(struct kvm *kvm); |
bd2b53b2 | 872 | void kvm_irq_routing_update(struct kvm *, struct kvm_irq_routing_table *); |
d34e6b17 | 873 | int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args); |
721eecbf GH |
874 | |
875 | #else | |
876 | ||
d34e6b17 | 877 | static inline void kvm_eventfd_init(struct kvm *kvm) {} |
bd2b53b2 | 878 | |
d4db2935 | 879 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) |
721eecbf GH |
880 | { |
881 | return -EINVAL; | |
882 | } | |
883 | ||
884 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
bd2b53b2 | 885 | |
27923eb1 | 886 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 MT |
887 | static inline void kvm_irq_routing_update(struct kvm *kvm, |
888 | struct kvm_irq_routing_table *irq_rt) | |
889 | { | |
890 | rcu_assign_pointer(kvm->irq_routing, irq_rt); | |
891 | } | |
27923eb1 | 892 | #endif |
bd2b53b2 | 893 | |
d34e6b17 GH |
894 | static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) |
895 | { | |
896 | return -ENOSYS; | |
897 | } | |
721eecbf GH |
898 | |
899 | #endif /* CONFIG_HAVE_KVM_EVENTFD */ | |
900 | ||
73880c80 | 901 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
c5af89b6 GN |
902 | static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu) |
903 | { | |
d3efc8ef | 904 | return vcpu->kvm->bsp_vcpu_id == vcpu->vcpu_id; |
c5af89b6 | 905 | } |
3e515705 AK |
906 | |
907 | bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu); | |
908 | ||
909 | #else | |
910 | ||
911 | static inline bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu) { return true; } | |
912 | ||
6aa8b732 | 913 | #endif |
bfd99ff5 AK |
914 | |
915 | #ifdef __KVM_HAVE_DEVICE_ASSIGNMENT | |
916 | ||
917 | long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, | |
918 | unsigned long arg); | |
919 | ||
920 | #else | |
921 | ||
922 | static inline long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, | |
923 | unsigned long arg) | |
924 | { | |
925 | return -ENOTTY; | |
926 | } | |
927 | ||
73880c80 | 928 | #endif |
bfd99ff5 | 929 | |
a8eeb04a AK |
930 | static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu) |
931 | { | |
932 | set_bit(req, &vcpu->requests); | |
933 | } | |
934 | ||
a8eeb04a AK |
935 | static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu) |
936 | { | |
0719837c AK |
937 | if (test_bit(req, &vcpu->requests)) { |
938 | clear_bit(req, &vcpu->requests); | |
939 | return true; | |
940 | } else { | |
941 | return false; | |
942 | } | |
a8eeb04a AK |
943 | } |
944 | ||
4c088493 R |
945 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
946 | ||
947 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
948 | { | |
949 | vcpu->spin_loop.in_spin_loop = val; | |
950 | } | |
951 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
952 | { | |
953 | vcpu->spin_loop.dy_eligible = val; | |
954 | } | |
955 | ||
956 | #else /* !CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ | |
957 | ||
958 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
959 | { | |
960 | } | |
961 | ||
962 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
963 | { | |
964 | } | |
965 | ||
06e48c51 R |
966 | static inline bool kvm_vcpu_eligible_for_directed_yield(struct kvm_vcpu *vcpu) |
967 | { | |
968 | return true; | |
969 | } | |
970 | ||
4c088493 | 971 | #endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ |
bfd99ff5 AK |
972 | #endif |
973 |