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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) | |
69552c29 | 68 | #define KVM_PFN_ERR_RO_FAULT (KVM_PFN_ERR_MASK + 3) |
6c8ee57b | 69 | |
9c5b1172 | 70 | static inline bool is_error_pfn(pfn_t pfn) |
83f09228 | 71 | { |
9c5b1172 | 72 | return !!(pfn & KVM_PFN_ERR_MASK); |
83f09228 XG |
73 | } |
74 | ||
9c5b1172 | 75 | static inline bool is_noslot_pfn(pfn_t pfn) |
83f09228 | 76 | { |
9c5b1172 | 77 | return pfn == KVM_PFN_ERR_BAD; |
83f09228 XG |
78 | } |
79 | ||
9c5b1172 | 80 | static inline bool is_invalid_pfn(pfn_t pfn) |
83f09228 XG |
81 | { |
82 | return !is_noslot_pfn(pfn) && is_error_pfn(pfn); | |
83 | } | |
84 | ||
ca3a490c XG |
85 | #define KVM_HVA_ERR_BAD (PAGE_OFFSET) |
86 | ||
87 | static inline bool kvm_is_error_hva(unsigned long addr) | |
88 | { | |
89 | return addr == PAGE_OFFSET; | |
90 | } | |
91 | ||
6cede2e6 XG |
92 | #define KVM_ERR_PTR_BAD_PAGE (ERR_PTR(-ENOENT)) |
93 | ||
9c5b1172 | 94 | static inline bool is_error_page(struct page *page) |
6cede2e6 XG |
95 | { |
96 | return IS_ERR(page); | |
97 | } | |
98 | ||
d9e368d6 AK |
99 | /* |
100 | * vcpu->requests bit members | |
101 | */ | |
3176bc3e | 102 | #define KVM_REQ_TLB_FLUSH 0 |
2f52d58c | 103 | #define KVM_REQ_MIGRATE_TIMER 1 |
b209749f | 104 | #define KVM_REQ_REPORT_TPR_ACCESS 2 |
2e53d63a | 105 | #define KVM_REQ_MMU_RELOAD 3 |
71c4dfaf | 106 | #define KVM_REQ_TRIPLE_FAULT 4 |
06e05645 | 107 | #define KVM_REQ_PENDING_TIMER 5 |
d7690175 | 108 | #define KVM_REQ_UNHALT 6 |
4731d4c7 | 109 | #define KVM_REQ_MMU_SYNC 7 |
34c238a1 | 110 | #define KVM_REQ_CLOCK_UPDATE 8 |
32f88400 | 111 | #define KVM_REQ_KICK 9 |
02daab21 | 112 | #define KVM_REQ_DEACTIVATE_FPU 10 |
3842d135 | 113 | #define KVM_REQ_EVENT 11 |
af585b92 | 114 | #define KVM_REQ_APF_HALT 12 |
c9aaa895 | 115 | #define KVM_REQ_STEAL_UPDATE 13 |
7460fb4a | 116 | #define KVM_REQ_NMI 14 |
d6185f20 | 117 | #define KVM_REQ_IMMEDIATE_EXIT 15 |
f5132b01 GN |
118 | #define KVM_REQ_PMU 16 |
119 | #define KVM_REQ_PMI 17 | |
6aa8b732 | 120 | |
5550af4d SY |
121 | #define KVM_USERSPACE_IRQ_SOURCE_ID 0 |
122 | ||
6c474694 | 123 | struct kvm; |
6aa8b732 | 124 | struct kvm_vcpu; |
c16f862d | 125 | extern struct kmem_cache *kvm_vcpu_cache; |
6aa8b732 | 126 | |
743eeb0b SL |
127 | struct kvm_io_range { |
128 | gpa_t addr; | |
129 | int len; | |
130 | struct kvm_io_device *dev; | |
131 | }; | |
132 | ||
786a9f88 | 133 | #define NR_IOBUS_DEVS 1000 |
a1300716 | 134 | |
2eeb2e94 GH |
135 | struct kvm_io_bus { |
136 | int dev_count; | |
a1300716 | 137 | struct kvm_io_range range[]; |
2eeb2e94 GH |
138 | }; |
139 | ||
e93f8a0f MT |
140 | enum kvm_bus { |
141 | KVM_MMIO_BUS, | |
142 | KVM_PIO_BUS, | |
143 | KVM_NR_BUSES | |
144 | }; | |
145 | ||
146 | int kvm_io_bus_write(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, | |
147 | int len, const void *val); | |
148 | int kvm_io_bus_read(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, int len, | |
bda9020e | 149 | void *val); |
743eeb0b SL |
150 | int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, |
151 | int len, struct kvm_io_device *dev); | |
e93f8a0f MT |
152 | int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx, |
153 | struct kvm_io_device *dev); | |
2eeb2e94 | 154 | |
af585b92 GN |
155 | #ifdef CONFIG_KVM_ASYNC_PF |
156 | struct kvm_async_pf { | |
157 | struct work_struct work; | |
158 | struct list_head link; | |
159 | struct list_head queue; | |
160 | struct kvm_vcpu *vcpu; | |
161 | struct mm_struct *mm; | |
162 | gva_t gva; | |
163 | unsigned long addr; | |
164 | struct kvm_arch_async_pf arch; | |
165 | struct page *page; | |
166 | bool done; | |
167 | }; | |
168 | ||
169 | void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu); | |
170 | void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu); | |
171 | int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, gfn_t gfn, | |
172 | struct kvm_arch_async_pf *arch); | |
344d9588 | 173 | int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu); |
af585b92 GN |
174 | #endif |
175 | ||
6b7e2d09 XG |
176 | enum { |
177 | OUTSIDE_GUEST_MODE, | |
178 | IN_GUEST_MODE, | |
c142786c AK |
179 | EXITING_GUEST_MODE, |
180 | READING_SHADOW_PAGE_TABLES, | |
6b7e2d09 XG |
181 | }; |
182 | ||
f78146b0 AK |
183 | /* |
184 | * Sometimes a large or cross-page mmio needs to be broken up into separate | |
185 | * exits for userspace servicing. | |
186 | */ | |
187 | struct kvm_mmio_fragment { | |
188 | gpa_t gpa; | |
189 | void *data; | |
190 | unsigned len; | |
191 | }; | |
192 | ||
d17fbbf7 ZX |
193 | struct kvm_vcpu { |
194 | struct kvm *kvm; | |
31bb117e | 195 | #ifdef CONFIG_PREEMPT_NOTIFIERS |
d17fbbf7 | 196 | struct preempt_notifier preempt_notifier; |
31bb117e | 197 | #endif |
6b7e2d09 | 198 | int cpu; |
d17fbbf7 | 199 | int vcpu_id; |
6b7e2d09 XG |
200 | int srcu_idx; |
201 | int mode; | |
d17fbbf7 | 202 | unsigned long requests; |
d0bfb940 | 203 | unsigned long guest_debug; |
6b7e2d09 XG |
204 | |
205 | struct mutex mutex; | |
206 | struct kvm_run *run; | |
f656ce01 | 207 | |
d17fbbf7 | 208 | int fpu_active; |
2acf923e | 209 | int guest_fpu_loaded, guest_xcr0_loaded; |
d17fbbf7 | 210 | wait_queue_head_t wq; |
34bb10b7 | 211 | struct pid *pid; |
d17fbbf7 ZX |
212 | int sigset_active; |
213 | sigset_t sigset; | |
214 | struct kvm_vcpu_stat stat; | |
215 | ||
34c16eec | 216 | #ifdef CONFIG_HAS_IOMEM |
d17fbbf7 ZX |
217 | int mmio_needed; |
218 | int mmio_read_completed; | |
219 | int mmio_is_write; | |
f78146b0 AK |
220 | int mmio_cur_fragment; |
221 | int mmio_nr_fragments; | |
222 | struct kvm_mmio_fragment mmio_fragments[KVM_MAX_MMIO_FRAGMENTS]; | |
34c16eec | 223 | #endif |
1165f5fe | 224 | |
af585b92 GN |
225 | #ifdef CONFIG_KVM_ASYNC_PF |
226 | struct { | |
227 | u32 queued; | |
228 | struct list_head queue; | |
229 | struct list_head done; | |
230 | spinlock_t lock; | |
231 | } async_pf; | |
232 | #endif | |
233 | ||
4c088493 R |
234 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
235 | /* | |
236 | * Cpu relax intercept or pause loop exit optimization | |
237 | * in_spin_loop: set when a vcpu does a pause loop exit | |
238 | * or cpu relax intercepted. | |
239 | * dy_eligible: indicates whether vcpu is eligible for directed yield. | |
240 | */ | |
241 | struct { | |
242 | bool in_spin_loop; | |
243 | bool dy_eligible; | |
244 | } spin_loop; | |
245 | #endif | |
d657a98e ZX |
246 | struct kvm_vcpu_arch arch; |
247 | }; | |
248 | ||
6b7e2d09 XG |
249 | static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu) |
250 | { | |
251 | return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE); | |
252 | } | |
253 | ||
660c22c4 TY |
254 | /* |
255 | * Some of the bitops functions do not support too long bitmaps. | |
256 | * This number must be determined not to exceed such limits. | |
257 | */ | |
258 | #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1) | |
259 | ||
6aa8b732 AK |
260 | struct kvm_memory_slot { |
261 | gfn_t base_gfn; | |
262 | unsigned long npages; | |
263 | unsigned long flags; | |
6aa8b732 | 264 | unsigned long *dirty_bitmap; |
db3fe4eb | 265 | struct kvm_arch_memory_slot arch; |
8a7ae055 | 266 | unsigned long userspace_addr; |
80b14b5b | 267 | int user_alloc; |
e36d96f7 | 268 | int id; |
6aa8b732 AK |
269 | }; |
270 | ||
87bf6e7d TY |
271 | static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot) |
272 | { | |
273 | return ALIGN(memslot->npages, BITS_PER_LONG) / 8; | |
274 | } | |
275 | ||
399ec807 AK |
276 | struct kvm_kernel_irq_routing_entry { |
277 | u32 gsi; | |
5116d8f6 | 278 | u32 type; |
4925663a | 279 | int (*set)(struct kvm_kernel_irq_routing_entry *e, |
1a6e4a8c | 280 | struct kvm *kvm, int irq_source_id, int level); |
399ec807 AK |
281 | union { |
282 | struct { | |
283 | unsigned irqchip; | |
284 | unsigned pin; | |
285 | } irqchip; | |
79950e10 | 286 | struct msi_msg msi; |
399ec807 | 287 | }; |
46e624b9 GN |
288 | struct hlist_node link; |
289 | }; | |
290 | ||
3e71f88b GN |
291 | #ifdef __KVM_HAVE_IOAPIC |
292 | ||
46e624b9 | 293 | struct kvm_irq_routing_table { |
3e71f88b | 294 | int chip[KVM_NR_IRQCHIPS][KVM_IOAPIC_NUM_PINS]; |
46e624b9 GN |
295 | struct kvm_kernel_irq_routing_entry *rt_entries; |
296 | u32 nr_rt_entries; | |
297 | /* | |
298 | * Array indexed by gsi. Each entry contains list of irq chips | |
299 | * the gsi is connected to. | |
300 | */ | |
301 | struct hlist_head map[0]; | |
399ec807 AK |
302 | }; |
303 | ||
3e71f88b GN |
304 | #else |
305 | ||
306 | struct kvm_irq_routing_table {}; | |
307 | ||
308 | #endif | |
309 | ||
93a5cef0 XG |
310 | #ifndef KVM_MEM_SLOTS_NUM |
311 | #define KVM_MEM_SLOTS_NUM (KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS) | |
312 | #endif | |
313 | ||
bf3e05bc XG |
314 | /* |
315 | * Note: | |
316 | * memslots are not sorted by id anymore, please use id_to_memslot() | |
317 | * to get the memslot by its id. | |
318 | */ | |
46a26bf5 | 319 | struct kvm_memslots { |
49c7754c | 320 | u64 generation; |
93a5cef0 | 321 | struct kvm_memory_slot memslots[KVM_MEM_SLOTS_NUM]; |
f85e2cb5 XG |
322 | /* The mapping table from slot id to the index in memslots[]. */ |
323 | int id_to_index[KVM_MEM_SLOTS_NUM]; | |
46a26bf5 MT |
324 | }; |
325 | ||
6aa8b732 | 326 | struct kvm { |
aaee2c94 | 327 | spinlock_t mmu_lock; |
79fac95e | 328 | struct mutex slots_lock; |
6d4e4c4f | 329 | struct mm_struct *mm; /* userspace tied to this vm */ |
46a26bf5 | 330 | struct kvm_memslots *memslots; |
bc6678a3 | 331 | struct srcu_struct srcu; |
73880c80 GN |
332 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
333 | u32 bsp_vcpu_id; | |
73880c80 | 334 | #endif |
fb3f0f51 | 335 | struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; |
73880c80 | 336 | atomic_t online_vcpus; |
217ece61 | 337 | int last_boosted_vcpu; |
133de902 | 338 | struct list_head vm_list; |
60eead79 | 339 | struct mutex lock; |
e93f8a0f | 340 | struct kvm_io_bus *buses[KVM_NR_BUSES]; |
721eecbf GH |
341 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
342 | struct { | |
343 | spinlock_t lock; | |
344 | struct list_head items; | |
345 | } irqfds; | |
d34e6b17 | 346 | struct list_head ioeventfds; |
721eecbf | 347 | #endif |
ba1389b7 | 348 | struct kvm_vm_stat stat; |
d69fb81f | 349 | struct kvm_arch arch; |
d39f13b0 | 350 | atomic_t users_count; |
5f94c174 | 351 | #ifdef KVM_COALESCED_MMIO_PAGE_OFFSET |
5f94c174 | 352 | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; |
2b3c246a SL |
353 | spinlock_t ring_lock; |
354 | struct list_head coalesced_zones; | |
5f94c174 | 355 | #endif |
e930bffe | 356 | |
60eead79 | 357 | struct mutex irq_lock; |
75858a84 | 358 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 MT |
359 | /* |
360 | * Update side is protected by irq_lock and, | |
361 | * if configured, irqfds.lock. | |
362 | */ | |
4b6a2872 | 363 | struct kvm_irq_routing_table __rcu *irq_routing; |
75858a84 | 364 | struct hlist_head mask_notifier_list; |
136bdfee | 365 | struct hlist_head irq_ack_notifier_list; |
75858a84 AK |
366 | #endif |
367 | ||
36c1ed82 | 368 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
e930bffe AA |
369 | struct mmu_notifier mmu_notifier; |
370 | unsigned long mmu_notifier_seq; | |
371 | long mmu_notifier_count; | |
372 | #endif | |
5c663a15 | 373 | long tlbs_dirty; |
6aa8b732 AK |
374 | }; |
375 | ||
a737f256 CD |
376 | #define kvm_err(fmt, ...) \ |
377 | pr_err("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
378 | #define kvm_info(fmt, ...) \ | |
379 | pr_info("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
380 | #define kvm_debug(fmt, ...) \ | |
381 | pr_debug("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
382 | #define kvm_pr_unimpl(fmt, ...) \ | |
383 | pr_err_ratelimited("kvm [%i]: " fmt, \ | |
384 | task_tgid_nr(current), ## __VA_ARGS__) | |
f0242478 | 385 | |
a737f256 CD |
386 | /* The guest did something we don't support. */ |
387 | #define vcpu_unimpl(vcpu, fmt, ...) \ | |
388 | kvm_pr_unimpl("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__) | |
6aa8b732 | 389 | |
988a2cae GN |
390 | static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i) |
391 | { | |
392 | smp_rmb(); | |
393 | return kvm->vcpus[i]; | |
394 | } | |
395 | ||
396 | #define kvm_for_each_vcpu(idx, vcpup, kvm) \ | |
b42fc3cb JM |
397 | for (idx = 0; \ |
398 | idx < atomic_read(&kvm->online_vcpus) && \ | |
399 | (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \ | |
400 | idx++) | |
988a2cae | 401 | |
be6ba0f0 XG |
402 | #define kvm_for_each_memslot(memslot, slots) \ |
403 | for (memslot = &slots->memslots[0]; \ | |
bf3e05bc XG |
404 | memslot < slots->memslots + KVM_MEM_SLOTS_NUM && memslot->npages;\ |
405 | memslot++) | |
be6ba0f0 | 406 | |
fb3f0f51 RR |
407 | int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id); |
408 | void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); | |
409 | ||
313a3dc7 CO |
410 | void vcpu_load(struct kvm_vcpu *vcpu); |
411 | void vcpu_put(struct kvm_vcpu *vcpu); | |
412 | ||
0ee75bea | 413 | int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, |
c16f862d | 414 | struct module *module); |
cb498ea2 | 415 | void kvm_exit(void); |
6aa8b732 | 416 | |
d39f13b0 IE |
417 | void kvm_get_kvm(struct kvm *kvm); |
418 | void kvm_put_kvm(struct kvm *kvm); | |
be593d62 | 419 | void update_memslots(struct kvm_memslots *slots, struct kvm_memory_slot *new); |
d39f13b0 | 420 | |
90d83dc3 LJ |
421 | static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm) |
422 | { | |
423 | return rcu_dereference_check(kvm->memslots, | |
424 | srcu_read_lock_held(&kvm->srcu) | |
425 | || lockdep_is_held(&kvm->slots_lock)); | |
426 | } | |
427 | ||
28a37544 XG |
428 | static inline struct kvm_memory_slot * |
429 | id_to_memslot(struct kvm_memslots *slots, int id) | |
430 | { | |
f85e2cb5 XG |
431 | int index = slots->id_to_index[id]; |
432 | struct kvm_memory_slot *slot; | |
bf3e05bc | 433 | |
f85e2cb5 | 434 | slot = &slots->memslots[index]; |
bf3e05bc | 435 | |
f85e2cb5 XG |
436 | WARN_ON(slot->id != id); |
437 | return slot; | |
28a37544 XG |
438 | } |
439 | ||
210c7c4d IE |
440 | int kvm_set_memory_region(struct kvm *kvm, |
441 | struct kvm_userspace_memory_region *mem, | |
442 | int user_alloc); | |
f78e0e2e SY |
443 | int __kvm_set_memory_region(struct kvm *kvm, |
444 | struct kvm_userspace_memory_region *mem, | |
445 | int user_alloc); | |
db3fe4eb TY |
446 | void kvm_arch_free_memslot(struct kvm_memory_slot *free, |
447 | struct kvm_memory_slot *dont); | |
448 | int kvm_arch_create_memslot(struct kvm_memory_slot *slot, unsigned long npages); | |
f7784b8e MT |
449 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
450 | struct kvm_memory_slot *memslot, | |
451 | struct kvm_memory_slot old, | |
452 | struct kvm_userspace_memory_region *mem, | |
453 | int user_alloc); | |
454 | void kvm_arch_commit_memory_region(struct kvm *kvm, | |
0de10343 ZX |
455 | struct kvm_userspace_memory_region *mem, |
456 | struct kvm_memory_slot old, | |
457 | int user_alloc); | |
db3fe4eb | 458 | bool kvm_largepages_enabled(void); |
54dee993 | 459 | void kvm_disable_largepages(void); |
34d4cb8f | 460 | void kvm_arch_flush_shadow(struct kvm *kvm); |
a983fb23 | 461 | |
48987781 XG |
462 | int gfn_to_page_many_atomic(struct kvm *kvm, gfn_t gfn, struct page **pages, |
463 | int nr_pages); | |
464 | ||
954bbbc2 | 465 | struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); |
05da4558 | 466 | unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn); |
b4231d61 IE |
467 | void kvm_release_page_clean(struct page *page); |
468 | void kvm_release_page_dirty(struct page *page); | |
35149e21 AL |
469 | void kvm_set_page_dirty(struct page *page); |
470 | void kvm_set_page_accessed(struct page *page); | |
471 | ||
365fb3fd | 472 | pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn); |
612819c3 MT |
473 | pfn_t gfn_to_pfn_async(struct kvm *kvm, gfn_t gfn, bool *async, |
474 | bool write_fault, bool *writable); | |
35149e21 | 475 | pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn); |
612819c3 MT |
476 | pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault, |
477 | bool *writable); | |
d5661048 | 478 | pfn_t gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
037d92dc XG |
479 | pfn_t gfn_to_pfn_memslot_atomic(struct kvm_memory_slot *slot, gfn_t gfn); |
480 | ||
32cad84f | 481 | void kvm_release_pfn_dirty(pfn_t pfn); |
35149e21 AL |
482 | void kvm_release_pfn_clean(pfn_t pfn); |
483 | void kvm_set_pfn_dirty(pfn_t pfn); | |
484 | void kvm_set_pfn_accessed(pfn_t pfn); | |
485 | void kvm_get_pfn(pfn_t pfn); | |
486 | ||
195aefde IE |
487 | int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, |
488 | int len); | |
7ec54588 MT |
489 | int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data, |
490 | unsigned long len); | |
195aefde | 491 | int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); |
e03b644f GN |
492 | int kvm_read_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
493 | void *data, unsigned long len); | |
195aefde IE |
494 | int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, |
495 | int offset, int len); | |
496 | int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, | |
497 | unsigned long len); | |
49c7754c GN |
498 | int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
499 | void *data, unsigned long len); | |
500 | int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc, | |
501 | gpa_t gpa); | |
195aefde IE |
502 | int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); |
503 | int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); | |
6aa8b732 | 504 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); |
e0d62c7f | 505 | int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); |
8f0b1ab6 | 506 | unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn); |
6aa8b732 | 507 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); |
49c7754c GN |
508 | void mark_page_dirty_in_slot(struct kvm *kvm, struct kvm_memory_slot *memslot, |
509 | gfn_t gfn); | |
6aa8b732 | 510 | |
8776e519 | 511 | void kvm_vcpu_block(struct kvm_vcpu *vcpu); |
b6d33834 | 512 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
41628d33 | 513 | bool kvm_vcpu_yield_to(struct kvm_vcpu *target); |
d255f4f2 | 514 | void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu); |
6aa8b732 | 515 | void kvm_resched(struct kvm_vcpu *vcpu); |
7702fd1f AK |
516 | void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); |
517 | void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); | |
a4ee1ca4 | 518 | |
d9e368d6 | 519 | void kvm_flush_remote_tlbs(struct kvm *kvm); |
2e53d63a | 520 | void kvm_reload_remote_mmus(struct kvm *kvm); |
6aa8b732 | 521 | |
043405e1 CO |
522 | long kvm_arch_dev_ioctl(struct file *filp, |
523 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 CO |
524 | long kvm_arch_vcpu_ioctl(struct file *filp, |
525 | unsigned int ioctl, unsigned long arg); | |
5b1c1493 | 526 | int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf); |
018d00d2 ZX |
527 | |
528 | int kvm_dev_ioctl_check_extension(long ext); | |
529 | ||
5bb064dc ZX |
530 | int kvm_get_dirty_log(struct kvm *kvm, |
531 | struct kvm_dirty_log *log, int *is_dirty); | |
532 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, | |
533 | struct kvm_dirty_log *log); | |
534 | ||
1fe779f8 CO |
535 | int kvm_vm_ioctl_set_memory_region(struct kvm *kvm, |
536 | struct | |
537 | kvm_userspace_memory_region *mem, | |
538 | int user_alloc); | |
23d43cf9 | 539 | int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_level); |
1fe779f8 CO |
540 | long kvm_arch_vm_ioctl(struct file *filp, |
541 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 | 542 | |
d0752060 HB |
543 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); |
544 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); | |
545 | ||
8b006791 ZX |
546 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, |
547 | struct kvm_translation *tr); | |
548 | ||
b6c7a5dc HB |
549 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); |
550 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); | |
551 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
552 | struct kvm_sregs *sregs); | |
553 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
554 | struct kvm_sregs *sregs); | |
62d9f0db MT |
555 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
556 | struct kvm_mp_state *mp_state); | |
557 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
558 | struct kvm_mp_state *mp_state); | |
d0bfb940 JK |
559 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
560 | struct kvm_guest_debug *dbg); | |
b6c7a5dc HB |
561 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); |
562 | ||
f8c16bba ZX |
563 | int kvm_arch_init(void *opaque); |
564 | void kvm_arch_exit(void); | |
043405e1 | 565 | |
e9b11c17 ZX |
566 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); |
567 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu); | |
568 | ||
569 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu); | |
570 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
571 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); | |
572 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); | |
26e5215f | 573 | int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu); |
d40ccc62 | 574 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu); |
e9b11c17 ZX |
575 | |
576 | int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu); | |
10474ae8 | 577 | int kvm_arch_hardware_enable(void *garbage); |
e9b11c17 ZX |
578 | void kvm_arch_hardware_disable(void *garbage); |
579 | int kvm_arch_hardware_setup(void); | |
580 | void kvm_arch_hardware_unsetup(void); | |
581 | void kvm_arch_check_processor_compat(void *rtn); | |
1d737c8a | 582 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu); |
b6d33834 | 583 | int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu); |
e9b11c17 | 584 | |
d19a9cd2 ZX |
585 | void kvm_free_physmem(struct kvm *kvm); |
586 | ||
c1a7b32a TY |
587 | void *kvm_kvzalloc(unsigned long size); |
588 | void kvm_kvfree(const void *addr); | |
589 | ||
d89f5eff JK |
590 | #ifndef __KVM_HAVE_ARCH_VM_ALLOC |
591 | static inline struct kvm *kvm_arch_alloc_vm(void) | |
592 | { | |
593 | return kzalloc(sizeof(struct kvm), GFP_KERNEL); | |
594 | } | |
595 | ||
596 | static inline void kvm_arch_free_vm(struct kvm *kvm) | |
597 | { | |
598 | kfree(kvm); | |
599 | } | |
600 | #endif | |
601 | ||
b6d33834 CD |
602 | static inline wait_queue_head_t *kvm_arch_vcpu_wq(struct kvm_vcpu *vcpu) |
603 | { | |
2246f8b5 AG |
604 | #ifdef __KVM_HAVE_ARCH_WQP |
605 | return vcpu->arch.wqp; | |
606 | #else | |
b6d33834 | 607 | return &vcpu->wq; |
b6d33834 | 608 | #endif |
2246f8b5 | 609 | } |
b6d33834 | 610 | |
e08b9637 | 611 | int kvm_arch_init_vm(struct kvm *kvm, unsigned long type); |
d19a9cd2 | 612 | void kvm_arch_destroy_vm(struct kvm *kvm); |
8a98f664 | 613 | void kvm_free_all_assigned_devices(struct kvm *kvm); |
ad8ba2cd | 614 | void kvm_arch_sync_events(struct kvm *kvm); |
e9b11c17 | 615 | |
3d80840d | 616 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu); |
5736199a | 617 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
682c59a3 | 618 | |
a2766325 | 619 | bool kvm_is_mmio_pfn(pfn_t pfn); |
c77fb9dc | 620 | |
62c476c7 BAY |
621 | struct kvm_irq_ack_notifier { |
622 | struct hlist_node link; | |
623 | unsigned gsi; | |
624 | void (*irq_acked)(struct kvm_irq_ack_notifier *kian); | |
625 | }; | |
626 | ||
627 | struct kvm_assigned_dev_kernel { | |
628 | struct kvm_irq_ack_notifier ack_notifier; | |
62c476c7 BAY |
629 | struct list_head list; |
630 | int assigned_dev_id; | |
ab9f4ecb | 631 | int host_segnr; |
62c476c7 BAY |
632 | int host_busnr; |
633 | int host_devfn; | |
c1e01514 | 634 | unsigned int entries_nr; |
62c476c7 | 635 | int host_irq; |
defaf158 | 636 | bool host_irq_disabled; |
07700a94 | 637 | bool pci_2_3; |
c1e01514 | 638 | struct msix_entry *host_msix_entries; |
62c476c7 | 639 | int guest_irq; |
0645211c | 640 | struct msix_entry *guest_msix_entries; |
4f906c19 | 641 | unsigned long irq_requested_type; |
5550af4d | 642 | int irq_source_id; |
b653574a | 643 | int flags; |
62c476c7 BAY |
644 | struct pci_dev *dev; |
645 | struct kvm *kvm; | |
0645211c | 646 | spinlock_t intx_lock; |
cf9eeac4 | 647 | spinlock_t intx_mask_lock; |
1e001d49 | 648 | char irq_name[32]; |
f8fcfd77 | 649 | struct pci_saved_state *pci_saved_state; |
62c476c7 | 650 | }; |
75858a84 AK |
651 | |
652 | struct kvm_irq_mask_notifier { | |
653 | void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked); | |
654 | int irq; | |
655 | struct hlist_node link; | |
656 | }; | |
657 | ||
658 | void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq, | |
659 | struct kvm_irq_mask_notifier *kimn); | |
660 | void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq, | |
661 | struct kvm_irq_mask_notifier *kimn); | |
4a994358 GN |
662 | void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin, |
663 | bool mask); | |
75858a84 | 664 | |
46e624b9 GN |
665 | #ifdef __KVM_HAVE_IOAPIC |
666 | void kvm_get_intr_delivery_bitmask(struct kvm_ioapic *ioapic, | |
667 | union kvm_ioapic_redirect_entry *entry, | |
668 | unsigned long *deliver_bitmask); | |
669 | #endif | |
670 | int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level); | |
bd2b53b2 MT |
671 | int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm, |
672 | int irq_source_id, int level); | |
44882eed | 673 | void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin); |
3de42dc0 XZ |
674 | void kvm_register_irq_ack_notifier(struct kvm *kvm, |
675 | struct kvm_irq_ack_notifier *kian); | |
fa40a821 MT |
676 | void kvm_unregister_irq_ack_notifier(struct kvm *kvm, |
677 | struct kvm_irq_ack_notifier *kian); | |
5550af4d SY |
678 | int kvm_request_irq_source_id(struct kvm *kvm); |
679 | void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id); | |
62c476c7 | 680 | |
522c68c4 SY |
681 | /* For vcpu->arch.iommu_flags */ |
682 | #define KVM_IOMMU_CACHE_COHERENCY 0x1 | |
683 | ||
19de40a8 | 684 | #ifdef CONFIG_IOMMU_API |
3ad26d81 | 685 | int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
32f6daad | 686 | void kvm_iommu_unmap_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
260782bc | 687 | int kvm_iommu_map_guest(struct kvm *kvm); |
62c476c7 | 688 | int kvm_iommu_unmap_guest(struct kvm *kvm); |
260782bc WH |
689 | int kvm_assign_device(struct kvm *kvm, |
690 | struct kvm_assigned_dev_kernel *assigned_dev); | |
0a920356 WH |
691 | int kvm_deassign_device(struct kvm *kvm, |
692 | struct kvm_assigned_dev_kernel *assigned_dev); | |
19de40a8 | 693 | #else /* CONFIG_IOMMU_API */ |
62c476c7 | 694 | static inline int kvm_iommu_map_pages(struct kvm *kvm, |
d7a79b6c | 695 | struct kvm_memory_slot *slot) |
62c476c7 BAY |
696 | { |
697 | return 0; | |
698 | } | |
699 | ||
32f6daad AW |
700 | static inline void kvm_iommu_unmap_pages(struct kvm *kvm, |
701 | struct kvm_memory_slot *slot) | |
702 | { | |
703 | } | |
704 | ||
260782bc | 705 | static inline int kvm_iommu_map_guest(struct kvm *kvm) |
62c476c7 BAY |
706 | { |
707 | return -ENODEV; | |
708 | } | |
709 | ||
710 | static inline int kvm_iommu_unmap_guest(struct kvm *kvm) | |
711 | { | |
712 | return 0; | |
713 | } | |
260782bc WH |
714 | |
715 | static inline int kvm_assign_device(struct kvm *kvm, | |
716 | struct kvm_assigned_dev_kernel *assigned_dev) | |
717 | { | |
718 | return 0; | |
719 | } | |
0a920356 WH |
720 | |
721 | static inline int kvm_deassign_device(struct kvm *kvm, | |
722 | struct kvm_assigned_dev_kernel *assigned_dev) | |
723 | { | |
724 | return 0; | |
725 | } | |
19de40a8 | 726 | #endif /* CONFIG_IOMMU_API */ |
62c476c7 | 727 | |
d172fcd3 LV |
728 | static inline void kvm_guest_enter(void) |
729 | { | |
8fa22068 | 730 | BUG_ON(preemptible()); |
e56a7a28 | 731 | account_system_vtime(current); |
d172fcd3 | 732 | current->flags |= PF_VCPU; |
8fa22068 GN |
733 | /* KVM does not hold any references to rcu protected data when it |
734 | * switches CPU into a guest mode. In fact switching to a guest mode | |
735 | * is very similar to exiting to userspase from rcu point of view. In | |
736 | * addition CPU may stay in a guest mode for quite a long time (up to | |
737 | * one time slice). Lets treat guest mode as quiescent state, just like | |
738 | * we do with user-mode execution. | |
739 | */ | |
740 | rcu_virt_note_context_switch(smp_processor_id()); | |
d172fcd3 LV |
741 | } |
742 | ||
743 | static inline void kvm_guest_exit(void) | |
744 | { | |
e56a7a28 | 745 | account_system_vtime(current); |
d172fcd3 LV |
746 | current->flags &= ~PF_VCPU; |
747 | } | |
748 | ||
9d4cba7f PM |
749 | /* |
750 | * search_memslots() and __gfn_to_memslot() are here because they are | |
751 | * used in non-modular code in arch/powerpc/kvm/book3s_hv_rm_mmu.c. | |
752 | * gfn_to_memslot() itself isn't here as an inline because that would | |
753 | * bloat other code too much. | |
754 | */ | |
755 | static inline struct kvm_memory_slot * | |
756 | search_memslots(struct kvm_memslots *slots, gfn_t gfn) | |
757 | { | |
758 | struct kvm_memory_slot *memslot; | |
759 | ||
760 | kvm_for_each_memslot(memslot, slots) | |
761 | if (gfn >= memslot->base_gfn && | |
762 | gfn < memslot->base_gfn + memslot->npages) | |
763 | return memslot; | |
764 | ||
765 | return NULL; | |
766 | } | |
767 | ||
768 | static inline struct kvm_memory_slot * | |
769 | __gfn_to_memslot(struct kvm_memslots *slots, gfn_t gfn) | |
770 | { | |
771 | return search_memslots(slots, gfn); | |
772 | } | |
773 | ||
0ee8dcb8 XG |
774 | static inline int memslot_id(struct kvm *kvm, gfn_t gfn) |
775 | { | |
776 | return gfn_to_memslot(kvm, gfn)->id; | |
777 | } | |
778 | ||
fb03cb6f TY |
779 | static inline gfn_t gfn_to_index(gfn_t gfn, gfn_t base_gfn, int level) |
780 | { | |
781 | /* KVM_HPAGE_GFN_SHIFT(PT_PAGE_TABLE_LEVEL) must be 0. */ | |
782 | return (gfn >> KVM_HPAGE_GFN_SHIFT(level)) - | |
783 | (base_gfn >> KVM_HPAGE_GFN_SHIFT(level)); | |
784 | } | |
785 | ||
d19a748b TY |
786 | static inline gfn_t |
787 | hva_to_gfn_memslot(unsigned long hva, struct kvm_memory_slot *slot) | |
788 | { | |
789 | gfn_t gfn_offset = (hva - slot->userspace_addr) >> PAGE_SHIFT; | |
790 | ||
791 | return slot->base_gfn + gfn_offset; | |
792 | } | |
793 | ||
887c08ac XG |
794 | static inline unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, |
795 | gfn_t gfn) | |
796 | { | |
797 | return slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE; | |
798 | } | |
799 | ||
1755fbcc AK |
800 | static inline gpa_t gfn_to_gpa(gfn_t gfn) |
801 | { | |
802 | return (gpa_t)gfn << PAGE_SHIFT; | |
803 | } | |
6aa8b732 | 804 | |
c30a358d JR |
805 | static inline gfn_t gpa_to_gfn(gpa_t gpa) |
806 | { | |
807 | return (gfn_t)(gpa >> PAGE_SHIFT); | |
808 | } | |
809 | ||
62c476c7 BAY |
810 | static inline hpa_t pfn_to_hpa(pfn_t pfn) |
811 | { | |
812 | return (hpa_t)pfn << PAGE_SHIFT; | |
813 | } | |
814 | ||
2f599714 | 815 | static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu) |
2f52d58c AK |
816 | { |
817 | set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests); | |
818 | } | |
819 | ||
ba1389b7 AK |
820 | enum kvm_stat_kind { |
821 | KVM_STAT_VM, | |
822 | KVM_STAT_VCPU, | |
823 | }; | |
824 | ||
417bc304 HB |
825 | struct kvm_stats_debugfs_item { |
826 | const char *name; | |
827 | int offset; | |
ba1389b7 | 828 | enum kvm_stat_kind kind; |
417bc304 HB |
829 | struct dentry *dentry; |
830 | }; | |
831 | extern struct kvm_stats_debugfs_item debugfs_entries[]; | |
76f7c879 | 832 | extern struct dentry *kvm_debugfs_dir; |
d4c9ff2d | 833 | |
36c1ed82 | 834 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
e930bffe AA |
835 | static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_seq) |
836 | { | |
837 | if (unlikely(vcpu->kvm->mmu_notifier_count)) | |
838 | return 1; | |
839 | /* | |
a355aa54 PM |
840 | * Ensure the read of mmu_notifier_count happens before the read |
841 | * of mmu_notifier_seq. This interacts with the smp_wmb() in | |
842 | * mmu_notifier_invalidate_range_end to make sure that the caller | |
843 | * either sees the old (non-zero) value of mmu_notifier_count or | |
844 | * the new (incremented) value of mmu_notifier_seq. | |
845 | * PowerPC Book3s HV KVM calls this under a per-page lock | |
846 | * rather than under kvm->mmu_lock, for scalability, so | |
847 | * can't rely on kvm->mmu_lock to keep things ordered. | |
e930bffe | 848 | */ |
a355aa54 | 849 | smp_rmb(); |
e930bffe AA |
850 | if (vcpu->kvm->mmu_notifier_seq != mmu_seq) |
851 | return 1; | |
852 | return 0; | |
853 | } | |
854 | #endif | |
855 | ||
9900b4b4 | 856 | #ifdef KVM_CAP_IRQ_ROUTING |
399ec807 AK |
857 | |
858 | #define KVM_MAX_IRQ_ROUTES 1024 | |
859 | ||
860 | int kvm_setup_default_irq_routing(struct kvm *kvm); | |
861 | int kvm_set_irq_routing(struct kvm *kvm, | |
862 | const struct kvm_irq_routing_entry *entries, | |
863 | unsigned nr, | |
864 | unsigned flags); | |
865 | void kvm_free_irq_routing(struct kvm *kvm); | |
866 | ||
07975ad3 JK |
867 | int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi); |
868 | ||
399ec807 AK |
869 | #else |
870 | ||
871 | static inline void kvm_free_irq_routing(struct kvm *kvm) {} | |
872 | ||
873 | #endif | |
874 | ||
721eecbf GH |
875 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
876 | ||
d34e6b17 | 877 | void kvm_eventfd_init(struct kvm *kvm); |
d4db2935 | 878 | int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args); |
721eecbf | 879 | void kvm_irqfd_release(struct kvm *kvm); |
bd2b53b2 | 880 | void kvm_irq_routing_update(struct kvm *, struct kvm_irq_routing_table *); |
d34e6b17 | 881 | int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args); |
721eecbf GH |
882 | |
883 | #else | |
884 | ||
d34e6b17 | 885 | static inline void kvm_eventfd_init(struct kvm *kvm) {} |
bd2b53b2 | 886 | |
d4db2935 | 887 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) |
721eecbf GH |
888 | { |
889 | return -EINVAL; | |
890 | } | |
891 | ||
892 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
bd2b53b2 | 893 | |
27923eb1 | 894 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 MT |
895 | static inline void kvm_irq_routing_update(struct kvm *kvm, |
896 | struct kvm_irq_routing_table *irq_rt) | |
897 | { | |
898 | rcu_assign_pointer(kvm->irq_routing, irq_rt); | |
899 | } | |
27923eb1 | 900 | #endif |
bd2b53b2 | 901 | |
d34e6b17 GH |
902 | static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) |
903 | { | |
904 | return -ENOSYS; | |
905 | } | |
721eecbf GH |
906 | |
907 | #endif /* CONFIG_HAVE_KVM_EVENTFD */ | |
908 | ||
73880c80 | 909 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
c5af89b6 GN |
910 | static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu) |
911 | { | |
d3efc8ef | 912 | return vcpu->kvm->bsp_vcpu_id == vcpu->vcpu_id; |
c5af89b6 | 913 | } |
3e515705 AK |
914 | |
915 | bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu); | |
916 | ||
917 | #else | |
918 | ||
919 | static inline bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu) { return true; } | |
920 | ||
6aa8b732 | 921 | #endif |
bfd99ff5 AK |
922 | |
923 | #ifdef __KVM_HAVE_DEVICE_ASSIGNMENT | |
924 | ||
925 | long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, | |
926 | unsigned long arg); | |
927 | ||
928 | #else | |
929 | ||
930 | static inline long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, | |
931 | unsigned long arg) | |
932 | { | |
933 | return -ENOTTY; | |
934 | } | |
935 | ||
73880c80 | 936 | #endif |
bfd99ff5 | 937 | |
a8eeb04a AK |
938 | static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu) |
939 | { | |
940 | set_bit(req, &vcpu->requests); | |
941 | } | |
942 | ||
a8eeb04a AK |
943 | static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu) |
944 | { | |
0719837c AK |
945 | if (test_bit(req, &vcpu->requests)) { |
946 | clear_bit(req, &vcpu->requests); | |
947 | return true; | |
948 | } else { | |
949 | return false; | |
950 | } | |
a8eeb04a AK |
951 | } |
952 | ||
4c088493 R |
953 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
954 | ||
955 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
956 | { | |
957 | vcpu->spin_loop.in_spin_loop = val; | |
958 | } | |
959 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
960 | { | |
961 | vcpu->spin_loop.dy_eligible = val; | |
962 | } | |
963 | ||
964 | #else /* !CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ | |
965 | ||
966 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
967 | { | |
968 | } | |
969 | ||
970 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
971 | { | |
972 | } | |
973 | ||
06e48c51 R |
974 | static inline bool kvm_vcpu_eligible_for_directed_yield(struct kvm_vcpu *vcpu) |
975 | { | |
976 | return true; | |
977 | } | |
978 | ||
4c088493 | 979 | #endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ |
bfd99ff5 AK |
980 | #endif |
981 |