Commit | Line | Data |
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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 | ||
87da7e66 XG |
45 | /* Two fragments for cross MMIO pages. */ |
46 | #define KVM_MAX_MMIO_FRAGMENTS 2 | |
f78146b0 | 47 | |
9c5b1172 XG |
48 | /* |
49 | * For the normal pfn, the highest 12 bits should be zero, | |
81c52c56 XG |
50 | * so we can mask bit 62 ~ bit 52 to indicate the error pfn, |
51 | * mask bit 63 to indicate the noslot pfn. | |
9c5b1172 | 52 | */ |
81c52c56 XG |
53 | #define KVM_PFN_ERR_MASK (0x7ffULL << 52) |
54 | #define KVM_PFN_ERR_NOSLOT_MASK (0xfffULL << 52) | |
55 | #define KVM_PFN_NOSLOT (0x1ULL << 63) | |
9c5b1172 XG |
56 | |
57 | #define KVM_PFN_ERR_FAULT (KVM_PFN_ERR_MASK) | |
58 | #define KVM_PFN_ERR_HWPOISON (KVM_PFN_ERR_MASK + 1) | |
81c52c56 | 59 | #define KVM_PFN_ERR_RO_FAULT (KVM_PFN_ERR_MASK + 2) |
6c8ee57b | 60 | |
81c52c56 XG |
61 | /* |
62 | * error pfns indicate that the gfn is in slot but faild to | |
63 | * translate it to pfn on host. | |
64 | */ | |
9c5b1172 | 65 | static inline bool is_error_pfn(pfn_t pfn) |
83f09228 | 66 | { |
9c5b1172 | 67 | return !!(pfn & KVM_PFN_ERR_MASK); |
83f09228 XG |
68 | } |
69 | ||
81c52c56 XG |
70 | /* |
71 | * error_noslot pfns indicate that the gfn can not be | |
72 | * translated to pfn - it is not in slot or failed to | |
73 | * translate it to pfn. | |
74 | */ | |
75 | static inline bool is_error_noslot_pfn(pfn_t pfn) | |
83f09228 | 76 | { |
81c52c56 | 77 | return !!(pfn & KVM_PFN_ERR_NOSLOT_MASK); |
83f09228 XG |
78 | } |
79 | ||
81c52c56 XG |
80 | /* noslot pfn indicates that the gfn is not in slot. */ |
81 | static inline bool is_noslot_pfn(pfn_t pfn) | |
83f09228 | 82 | { |
81c52c56 | 83 | return pfn == KVM_PFN_NOSLOT; |
83f09228 XG |
84 | } |
85 | ||
7068d097 XG |
86 | #define KVM_HVA_ERR_BAD (PAGE_OFFSET) |
87 | #define KVM_HVA_ERR_RO_BAD (PAGE_OFFSET + PAGE_SIZE) | |
ca3a490c XG |
88 | |
89 | static inline bool kvm_is_error_hva(unsigned long addr) | |
90 | { | |
7068d097 | 91 | return addr >= PAGE_OFFSET; |
ca3a490c XG |
92 | } |
93 | ||
6cede2e6 XG |
94 | #define KVM_ERR_PTR_BAD_PAGE (ERR_PTR(-ENOENT)) |
95 | ||
9c5b1172 | 96 | static inline bool is_error_page(struct page *page) |
6cede2e6 XG |
97 | { |
98 | return IS_ERR(page); | |
99 | } | |
100 | ||
d9e368d6 AK |
101 | /* |
102 | * vcpu->requests bit members | |
103 | */ | |
3176bc3e | 104 | #define KVM_REQ_TLB_FLUSH 0 |
2f52d58c | 105 | #define KVM_REQ_MIGRATE_TIMER 1 |
b209749f | 106 | #define KVM_REQ_REPORT_TPR_ACCESS 2 |
2e53d63a | 107 | #define KVM_REQ_MMU_RELOAD 3 |
71c4dfaf | 108 | #define KVM_REQ_TRIPLE_FAULT 4 |
06e05645 | 109 | #define KVM_REQ_PENDING_TIMER 5 |
d7690175 | 110 | #define KVM_REQ_UNHALT 6 |
4731d4c7 | 111 | #define KVM_REQ_MMU_SYNC 7 |
34c238a1 | 112 | #define KVM_REQ_CLOCK_UPDATE 8 |
32f88400 | 113 | #define KVM_REQ_KICK 9 |
02daab21 | 114 | #define KVM_REQ_DEACTIVATE_FPU 10 |
3842d135 | 115 | #define KVM_REQ_EVENT 11 |
af585b92 | 116 | #define KVM_REQ_APF_HALT 12 |
c9aaa895 | 117 | #define KVM_REQ_STEAL_UPDATE 13 |
7460fb4a | 118 | #define KVM_REQ_NMI 14 |
d6185f20 | 119 | #define KVM_REQ_IMMEDIATE_EXIT 15 |
f5132b01 GN |
120 | #define KVM_REQ_PMU 16 |
121 | #define KVM_REQ_PMI 17 | |
f61c94bb | 122 | #define KVM_REQ_WATCHDOG 18 |
d828199e MT |
123 | #define KVM_REQ_MASTERCLOCK_UPDATE 19 |
124 | #define KVM_REQ_MCLOCK_INPROGRESS 20 | |
6aa8b732 | 125 | |
7a84428a AW |
126 | #define KVM_USERSPACE_IRQ_SOURCE_ID 0 |
127 | #define KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID 1 | |
5550af4d | 128 | |
6c474694 | 129 | struct kvm; |
6aa8b732 | 130 | struct kvm_vcpu; |
c16f862d | 131 | extern struct kmem_cache *kvm_vcpu_cache; |
6aa8b732 | 132 | |
743eeb0b SL |
133 | struct kvm_io_range { |
134 | gpa_t addr; | |
135 | int len; | |
136 | struct kvm_io_device *dev; | |
137 | }; | |
138 | ||
786a9f88 | 139 | #define NR_IOBUS_DEVS 1000 |
a1300716 | 140 | |
2eeb2e94 GH |
141 | struct kvm_io_bus { |
142 | int dev_count; | |
a1300716 | 143 | struct kvm_io_range range[]; |
2eeb2e94 GH |
144 | }; |
145 | ||
e93f8a0f MT |
146 | enum kvm_bus { |
147 | KVM_MMIO_BUS, | |
148 | KVM_PIO_BUS, | |
149 | KVM_NR_BUSES | |
150 | }; | |
151 | ||
152 | int kvm_io_bus_write(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, | |
153 | int len, const void *val); | |
154 | int kvm_io_bus_read(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, int len, | |
bda9020e | 155 | void *val); |
743eeb0b SL |
156 | int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, |
157 | int len, struct kvm_io_device *dev); | |
e93f8a0f MT |
158 | int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx, |
159 | struct kvm_io_device *dev); | |
2eeb2e94 | 160 | |
af585b92 GN |
161 | #ifdef CONFIG_KVM_ASYNC_PF |
162 | struct kvm_async_pf { | |
163 | struct work_struct work; | |
164 | struct list_head link; | |
165 | struct list_head queue; | |
166 | struct kvm_vcpu *vcpu; | |
167 | struct mm_struct *mm; | |
168 | gva_t gva; | |
169 | unsigned long addr; | |
170 | struct kvm_arch_async_pf arch; | |
171 | struct page *page; | |
172 | bool done; | |
173 | }; | |
174 | ||
175 | void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu); | |
176 | void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu); | |
177 | int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, gfn_t gfn, | |
178 | struct kvm_arch_async_pf *arch); | |
344d9588 | 179 | int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu); |
af585b92 GN |
180 | #endif |
181 | ||
6b7e2d09 XG |
182 | enum { |
183 | OUTSIDE_GUEST_MODE, | |
184 | IN_GUEST_MODE, | |
c142786c AK |
185 | EXITING_GUEST_MODE, |
186 | READING_SHADOW_PAGE_TABLES, | |
6b7e2d09 XG |
187 | }; |
188 | ||
f78146b0 AK |
189 | /* |
190 | * Sometimes a large or cross-page mmio needs to be broken up into separate | |
191 | * exits for userspace servicing. | |
192 | */ | |
193 | struct kvm_mmio_fragment { | |
194 | gpa_t gpa; | |
195 | void *data; | |
196 | unsigned len; | |
197 | }; | |
198 | ||
d17fbbf7 ZX |
199 | struct kvm_vcpu { |
200 | struct kvm *kvm; | |
31bb117e | 201 | #ifdef CONFIG_PREEMPT_NOTIFIERS |
d17fbbf7 | 202 | struct preempt_notifier preempt_notifier; |
31bb117e | 203 | #endif |
6b7e2d09 | 204 | int cpu; |
d17fbbf7 | 205 | int vcpu_id; |
6b7e2d09 XG |
206 | int srcu_idx; |
207 | int mode; | |
d17fbbf7 | 208 | unsigned long requests; |
d0bfb940 | 209 | unsigned long guest_debug; |
6b7e2d09 XG |
210 | |
211 | struct mutex mutex; | |
212 | struct kvm_run *run; | |
f656ce01 | 213 | |
d17fbbf7 | 214 | int fpu_active; |
2acf923e | 215 | int guest_fpu_loaded, guest_xcr0_loaded; |
d17fbbf7 | 216 | wait_queue_head_t wq; |
34bb10b7 | 217 | struct pid *pid; |
d17fbbf7 ZX |
218 | int sigset_active; |
219 | sigset_t sigset; | |
220 | struct kvm_vcpu_stat stat; | |
221 | ||
34c16eec | 222 | #ifdef CONFIG_HAS_IOMEM |
d17fbbf7 ZX |
223 | int mmio_needed; |
224 | int mmio_read_completed; | |
225 | int mmio_is_write; | |
f78146b0 AK |
226 | int mmio_cur_fragment; |
227 | int mmio_nr_fragments; | |
228 | struct kvm_mmio_fragment mmio_fragments[KVM_MAX_MMIO_FRAGMENTS]; | |
34c16eec | 229 | #endif |
1165f5fe | 230 | |
af585b92 GN |
231 | #ifdef CONFIG_KVM_ASYNC_PF |
232 | struct { | |
233 | u32 queued; | |
234 | struct list_head queue; | |
235 | struct list_head done; | |
236 | spinlock_t lock; | |
237 | } async_pf; | |
238 | #endif | |
239 | ||
4c088493 R |
240 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
241 | /* | |
242 | * Cpu relax intercept or pause loop exit optimization | |
243 | * in_spin_loop: set when a vcpu does a pause loop exit | |
244 | * or cpu relax intercepted. | |
245 | * dy_eligible: indicates whether vcpu is eligible for directed yield. | |
246 | */ | |
247 | struct { | |
248 | bool in_spin_loop; | |
249 | bool dy_eligible; | |
250 | } spin_loop; | |
251 | #endif | |
d657a98e ZX |
252 | struct kvm_vcpu_arch arch; |
253 | }; | |
254 | ||
6b7e2d09 XG |
255 | static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu) |
256 | { | |
257 | return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE); | |
258 | } | |
259 | ||
660c22c4 TY |
260 | /* |
261 | * Some of the bitops functions do not support too long bitmaps. | |
262 | * This number must be determined not to exceed such limits. | |
263 | */ | |
264 | #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1) | |
265 | ||
6aa8b732 AK |
266 | struct kvm_memory_slot { |
267 | gfn_t base_gfn; | |
268 | unsigned long npages; | |
269 | unsigned long flags; | |
6aa8b732 | 270 | unsigned long *dirty_bitmap; |
db3fe4eb | 271 | struct kvm_arch_memory_slot arch; |
8a7ae055 | 272 | unsigned long userspace_addr; |
80b14b5b | 273 | int user_alloc; |
e36d96f7 | 274 | int id; |
6aa8b732 AK |
275 | }; |
276 | ||
87bf6e7d TY |
277 | static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot) |
278 | { | |
279 | return ALIGN(memslot->npages, BITS_PER_LONG) / 8; | |
280 | } | |
281 | ||
399ec807 AK |
282 | struct kvm_kernel_irq_routing_entry { |
283 | u32 gsi; | |
5116d8f6 | 284 | u32 type; |
4925663a | 285 | int (*set)(struct kvm_kernel_irq_routing_entry *e, |
1a6e4a8c | 286 | struct kvm *kvm, int irq_source_id, int level); |
399ec807 AK |
287 | union { |
288 | struct { | |
289 | unsigned irqchip; | |
290 | unsigned pin; | |
291 | } irqchip; | |
79950e10 | 292 | struct msi_msg msi; |
399ec807 | 293 | }; |
46e624b9 GN |
294 | struct hlist_node link; |
295 | }; | |
296 | ||
3e71f88b GN |
297 | #ifdef __KVM_HAVE_IOAPIC |
298 | ||
46e624b9 | 299 | struct kvm_irq_routing_table { |
3e71f88b | 300 | int chip[KVM_NR_IRQCHIPS][KVM_IOAPIC_NUM_PINS]; |
46e624b9 GN |
301 | struct kvm_kernel_irq_routing_entry *rt_entries; |
302 | u32 nr_rt_entries; | |
303 | /* | |
304 | * Array indexed by gsi. Each entry contains list of irq chips | |
305 | * the gsi is connected to. | |
306 | */ | |
307 | struct hlist_head map[0]; | |
399ec807 AK |
308 | }; |
309 | ||
3e71f88b GN |
310 | #else |
311 | ||
312 | struct kvm_irq_routing_table {}; | |
313 | ||
314 | #endif | |
315 | ||
93a5cef0 | 316 | #ifndef KVM_MEM_SLOTS_NUM |
bbacc0c1 | 317 | #define KVM_MEM_SLOTS_NUM (KVM_USER_MEM_SLOTS + KVM_PRIVATE_MEM_SLOTS) |
93a5cef0 XG |
318 | #endif |
319 | ||
bf3e05bc XG |
320 | /* |
321 | * Note: | |
322 | * memslots are not sorted by id anymore, please use id_to_memslot() | |
323 | * to get the memslot by its id. | |
324 | */ | |
46a26bf5 | 325 | struct kvm_memslots { |
49c7754c | 326 | u64 generation; |
93a5cef0 | 327 | struct kvm_memory_slot memslots[KVM_MEM_SLOTS_NUM]; |
f85e2cb5 XG |
328 | /* The mapping table from slot id to the index in memslots[]. */ |
329 | int id_to_index[KVM_MEM_SLOTS_NUM]; | |
46a26bf5 MT |
330 | }; |
331 | ||
6aa8b732 | 332 | struct kvm { |
aaee2c94 | 333 | spinlock_t mmu_lock; |
79fac95e | 334 | struct mutex slots_lock; |
6d4e4c4f | 335 | struct mm_struct *mm; /* userspace tied to this vm */ |
46a26bf5 | 336 | struct kvm_memslots *memslots; |
bc6678a3 | 337 | struct srcu_struct srcu; |
73880c80 GN |
338 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
339 | u32 bsp_vcpu_id; | |
73880c80 | 340 | #endif |
fb3f0f51 | 341 | struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; |
73880c80 | 342 | atomic_t online_vcpus; |
217ece61 | 343 | int last_boosted_vcpu; |
133de902 | 344 | struct list_head vm_list; |
60eead79 | 345 | struct mutex lock; |
e93f8a0f | 346 | struct kvm_io_bus *buses[KVM_NR_BUSES]; |
721eecbf GH |
347 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
348 | struct { | |
349 | spinlock_t lock; | |
350 | struct list_head items; | |
7a84428a AW |
351 | struct list_head resampler_list; |
352 | struct mutex resampler_lock; | |
721eecbf | 353 | } irqfds; |
d34e6b17 | 354 | struct list_head ioeventfds; |
721eecbf | 355 | #endif |
ba1389b7 | 356 | struct kvm_vm_stat stat; |
d69fb81f | 357 | struct kvm_arch arch; |
d39f13b0 | 358 | atomic_t users_count; |
5f94c174 | 359 | #ifdef KVM_COALESCED_MMIO_PAGE_OFFSET |
5f94c174 | 360 | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; |
2b3c246a SL |
361 | spinlock_t ring_lock; |
362 | struct list_head coalesced_zones; | |
5f94c174 | 363 | #endif |
e930bffe | 364 | |
60eead79 | 365 | struct mutex irq_lock; |
75858a84 | 366 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 MT |
367 | /* |
368 | * Update side is protected by irq_lock and, | |
369 | * if configured, irqfds.lock. | |
370 | */ | |
4b6a2872 | 371 | struct kvm_irq_routing_table __rcu *irq_routing; |
75858a84 | 372 | struct hlist_head mask_notifier_list; |
136bdfee | 373 | struct hlist_head irq_ack_notifier_list; |
75858a84 AK |
374 | #endif |
375 | ||
36c1ed82 | 376 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
e930bffe AA |
377 | struct mmu_notifier mmu_notifier; |
378 | unsigned long mmu_notifier_seq; | |
379 | long mmu_notifier_count; | |
380 | #endif | |
5c663a15 | 381 | long tlbs_dirty; |
6aa8b732 AK |
382 | }; |
383 | ||
a737f256 CD |
384 | #define kvm_err(fmt, ...) \ |
385 | pr_err("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
386 | #define kvm_info(fmt, ...) \ | |
387 | pr_info("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
388 | #define kvm_debug(fmt, ...) \ | |
389 | pr_debug("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
390 | #define kvm_pr_unimpl(fmt, ...) \ | |
391 | pr_err_ratelimited("kvm [%i]: " fmt, \ | |
392 | task_tgid_nr(current), ## __VA_ARGS__) | |
f0242478 | 393 | |
a737f256 CD |
394 | /* The guest did something we don't support. */ |
395 | #define vcpu_unimpl(vcpu, fmt, ...) \ | |
396 | kvm_pr_unimpl("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__) | |
6aa8b732 | 397 | |
988a2cae GN |
398 | static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i) |
399 | { | |
400 | smp_rmb(); | |
401 | return kvm->vcpus[i]; | |
402 | } | |
403 | ||
404 | #define kvm_for_each_vcpu(idx, vcpup, kvm) \ | |
b42fc3cb JM |
405 | for (idx = 0; \ |
406 | idx < atomic_read(&kvm->online_vcpus) && \ | |
407 | (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \ | |
408 | idx++) | |
988a2cae | 409 | |
be6ba0f0 XG |
410 | #define kvm_for_each_memslot(memslot, slots) \ |
411 | for (memslot = &slots->memslots[0]; \ | |
bf3e05bc XG |
412 | memslot < slots->memslots + KVM_MEM_SLOTS_NUM && memslot->npages;\ |
413 | memslot++) | |
be6ba0f0 | 414 | |
fb3f0f51 RR |
415 | int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id); |
416 | void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); | |
417 | ||
9fc77441 | 418 | int __must_check vcpu_load(struct kvm_vcpu *vcpu); |
313a3dc7 CO |
419 | void vcpu_put(struct kvm_vcpu *vcpu); |
420 | ||
0ee75bea | 421 | int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, |
c16f862d | 422 | struct module *module); |
cb498ea2 | 423 | void kvm_exit(void); |
6aa8b732 | 424 | |
d39f13b0 IE |
425 | void kvm_get_kvm(struct kvm *kvm); |
426 | void kvm_put_kvm(struct kvm *kvm); | |
be593d62 | 427 | void update_memslots(struct kvm_memslots *slots, struct kvm_memory_slot *new); |
d39f13b0 | 428 | |
90d83dc3 LJ |
429 | static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm) |
430 | { | |
431 | return rcu_dereference_check(kvm->memslots, | |
432 | srcu_read_lock_held(&kvm->srcu) | |
433 | || lockdep_is_held(&kvm->slots_lock)); | |
434 | } | |
435 | ||
28a37544 XG |
436 | static inline struct kvm_memory_slot * |
437 | id_to_memslot(struct kvm_memslots *slots, int id) | |
438 | { | |
f85e2cb5 XG |
439 | int index = slots->id_to_index[id]; |
440 | struct kvm_memory_slot *slot; | |
bf3e05bc | 441 | |
f85e2cb5 | 442 | slot = &slots->memslots[index]; |
bf3e05bc | 443 | |
f85e2cb5 XG |
444 | WARN_ON(slot->id != id); |
445 | return slot; | |
28a37544 XG |
446 | } |
447 | ||
210c7c4d IE |
448 | int kvm_set_memory_region(struct kvm *kvm, |
449 | struct kvm_userspace_memory_region *mem, | |
450 | int user_alloc); | |
f78e0e2e SY |
451 | int __kvm_set_memory_region(struct kvm *kvm, |
452 | struct kvm_userspace_memory_region *mem, | |
453 | int user_alloc); | |
db3fe4eb TY |
454 | void kvm_arch_free_memslot(struct kvm_memory_slot *free, |
455 | struct kvm_memory_slot *dont); | |
456 | int kvm_arch_create_memslot(struct kvm_memory_slot *slot, unsigned long npages); | |
f7784b8e MT |
457 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
458 | struct kvm_memory_slot *memslot, | |
459 | struct kvm_memory_slot old, | |
460 | struct kvm_userspace_memory_region *mem, | |
461 | int user_alloc); | |
462 | void kvm_arch_commit_memory_region(struct kvm *kvm, | |
0de10343 ZX |
463 | struct kvm_userspace_memory_region *mem, |
464 | struct kvm_memory_slot old, | |
465 | int user_alloc); | |
db3fe4eb | 466 | bool kvm_largepages_enabled(void); |
54dee993 | 467 | void kvm_disable_largepages(void); |
2df72e9b MT |
468 | /* flush all memory translations */ |
469 | void kvm_arch_flush_shadow_all(struct kvm *kvm); | |
470 | /* flush memory translations pointing to 'slot' */ | |
471 | void kvm_arch_flush_shadow_memslot(struct kvm *kvm, | |
472 | struct kvm_memory_slot *slot); | |
a983fb23 | 473 | |
48987781 XG |
474 | int gfn_to_page_many_atomic(struct kvm *kvm, gfn_t gfn, struct page **pages, |
475 | int nr_pages); | |
476 | ||
954bbbc2 | 477 | struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); |
05da4558 | 478 | unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn); |
4d8b81ab | 479 | unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
b4231d61 IE |
480 | void kvm_release_page_clean(struct page *page); |
481 | void kvm_release_page_dirty(struct page *page); | |
35149e21 AL |
482 | void kvm_set_page_dirty(struct page *page); |
483 | void kvm_set_page_accessed(struct page *page); | |
484 | ||
365fb3fd | 485 | pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn); |
612819c3 MT |
486 | pfn_t gfn_to_pfn_async(struct kvm *kvm, gfn_t gfn, bool *async, |
487 | bool write_fault, bool *writable); | |
35149e21 | 488 | pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn); |
612819c3 MT |
489 | pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault, |
490 | bool *writable); | |
d5661048 | 491 | pfn_t gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
037d92dc XG |
492 | pfn_t gfn_to_pfn_memslot_atomic(struct kvm_memory_slot *slot, gfn_t gfn); |
493 | ||
32cad84f | 494 | void kvm_release_pfn_dirty(pfn_t pfn); |
35149e21 AL |
495 | void kvm_release_pfn_clean(pfn_t pfn); |
496 | void kvm_set_pfn_dirty(pfn_t pfn); | |
497 | void kvm_set_pfn_accessed(pfn_t pfn); | |
498 | void kvm_get_pfn(pfn_t pfn); | |
499 | ||
195aefde IE |
500 | int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, |
501 | int len); | |
7ec54588 MT |
502 | int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data, |
503 | unsigned long len); | |
195aefde | 504 | int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); |
e03b644f GN |
505 | int kvm_read_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
506 | void *data, unsigned long len); | |
195aefde IE |
507 | int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, |
508 | int offset, int len); | |
509 | int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, | |
510 | unsigned long len); | |
49c7754c GN |
511 | int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
512 | void *data, unsigned long len); | |
513 | int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc, | |
514 | gpa_t gpa); | |
195aefde IE |
515 | int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); |
516 | int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); | |
6aa8b732 | 517 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); |
e0d62c7f | 518 | int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); |
8f0b1ab6 | 519 | unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn); |
6aa8b732 | 520 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); |
49c7754c GN |
521 | void mark_page_dirty_in_slot(struct kvm *kvm, struct kvm_memory_slot *memslot, |
522 | gfn_t gfn); | |
6aa8b732 | 523 | |
8776e519 | 524 | void kvm_vcpu_block(struct kvm_vcpu *vcpu); |
b6d33834 | 525 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
41628d33 | 526 | bool kvm_vcpu_yield_to(struct kvm_vcpu *target); |
d255f4f2 | 527 | void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu); |
6aa8b732 | 528 | void kvm_resched(struct kvm_vcpu *vcpu); |
7702fd1f AK |
529 | void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); |
530 | void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); | |
a4ee1ca4 | 531 | |
d9e368d6 | 532 | void kvm_flush_remote_tlbs(struct kvm *kvm); |
2e53d63a | 533 | void kvm_reload_remote_mmus(struct kvm *kvm); |
d828199e | 534 | void kvm_make_mclock_inprogress_request(struct kvm *kvm); |
6aa8b732 | 535 | |
043405e1 CO |
536 | long kvm_arch_dev_ioctl(struct file *filp, |
537 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 CO |
538 | long kvm_arch_vcpu_ioctl(struct file *filp, |
539 | unsigned int ioctl, unsigned long arg); | |
5b1c1493 | 540 | int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf); |
018d00d2 ZX |
541 | |
542 | int kvm_dev_ioctl_check_extension(long ext); | |
543 | ||
5bb064dc ZX |
544 | int kvm_get_dirty_log(struct kvm *kvm, |
545 | struct kvm_dirty_log *log, int *is_dirty); | |
546 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, | |
547 | struct kvm_dirty_log *log); | |
548 | ||
1fe779f8 CO |
549 | int kvm_vm_ioctl_set_memory_region(struct kvm *kvm, |
550 | struct | |
551 | kvm_userspace_memory_region *mem, | |
552 | int user_alloc); | |
23d43cf9 | 553 | int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_level); |
1fe779f8 CO |
554 | long kvm_arch_vm_ioctl(struct file *filp, |
555 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 | 556 | |
d0752060 HB |
557 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); |
558 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); | |
559 | ||
8b006791 ZX |
560 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, |
561 | struct kvm_translation *tr); | |
562 | ||
b6c7a5dc HB |
563 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); |
564 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); | |
565 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
566 | struct kvm_sregs *sregs); | |
567 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
568 | struct kvm_sregs *sregs); | |
62d9f0db MT |
569 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
570 | struct kvm_mp_state *mp_state); | |
571 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
572 | struct kvm_mp_state *mp_state); | |
d0bfb940 JK |
573 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
574 | struct kvm_guest_debug *dbg); | |
b6c7a5dc HB |
575 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); |
576 | ||
f8c16bba ZX |
577 | int kvm_arch_init(void *opaque); |
578 | void kvm_arch_exit(void); | |
043405e1 | 579 | |
e9b11c17 ZX |
580 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); |
581 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu); | |
582 | ||
583 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu); | |
584 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
585 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); | |
586 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); | |
26e5215f | 587 | int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu); |
42897d86 | 588 | int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu); |
d40ccc62 | 589 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu); |
e9b11c17 | 590 | |
10474ae8 | 591 | int kvm_arch_hardware_enable(void *garbage); |
e9b11c17 ZX |
592 | void kvm_arch_hardware_disable(void *garbage); |
593 | int kvm_arch_hardware_setup(void); | |
594 | void kvm_arch_hardware_unsetup(void); | |
595 | void kvm_arch_check_processor_compat(void *rtn); | |
1d737c8a | 596 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu); |
b6d33834 | 597 | int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu); |
e9b11c17 | 598 | |
d19a9cd2 ZX |
599 | void kvm_free_physmem(struct kvm *kvm); |
600 | ||
c1a7b32a TY |
601 | void *kvm_kvzalloc(unsigned long size); |
602 | void kvm_kvfree(const void *addr); | |
603 | ||
d89f5eff JK |
604 | #ifndef __KVM_HAVE_ARCH_VM_ALLOC |
605 | static inline struct kvm *kvm_arch_alloc_vm(void) | |
606 | { | |
607 | return kzalloc(sizeof(struct kvm), GFP_KERNEL); | |
608 | } | |
609 | ||
610 | static inline void kvm_arch_free_vm(struct kvm *kvm) | |
611 | { | |
612 | kfree(kvm); | |
613 | } | |
614 | #endif | |
615 | ||
b6d33834 CD |
616 | static inline wait_queue_head_t *kvm_arch_vcpu_wq(struct kvm_vcpu *vcpu) |
617 | { | |
2246f8b5 AG |
618 | #ifdef __KVM_HAVE_ARCH_WQP |
619 | return vcpu->arch.wqp; | |
620 | #else | |
b6d33834 | 621 | return &vcpu->wq; |
b6d33834 | 622 | #endif |
2246f8b5 | 623 | } |
b6d33834 | 624 | |
e08b9637 | 625 | int kvm_arch_init_vm(struct kvm *kvm, unsigned long type); |
d19a9cd2 | 626 | void kvm_arch_destroy_vm(struct kvm *kvm); |
8a98f664 | 627 | void kvm_free_all_assigned_devices(struct kvm *kvm); |
ad8ba2cd | 628 | void kvm_arch_sync_events(struct kvm *kvm); |
e9b11c17 | 629 | |
3d80840d | 630 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu); |
5736199a | 631 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
682c59a3 | 632 | |
a2766325 | 633 | bool kvm_is_mmio_pfn(pfn_t pfn); |
c77fb9dc | 634 | |
62c476c7 BAY |
635 | struct kvm_irq_ack_notifier { |
636 | struct hlist_node link; | |
637 | unsigned gsi; | |
638 | void (*irq_acked)(struct kvm_irq_ack_notifier *kian); | |
639 | }; | |
640 | ||
641 | struct kvm_assigned_dev_kernel { | |
642 | struct kvm_irq_ack_notifier ack_notifier; | |
62c476c7 BAY |
643 | struct list_head list; |
644 | int assigned_dev_id; | |
ab9f4ecb | 645 | int host_segnr; |
62c476c7 BAY |
646 | int host_busnr; |
647 | int host_devfn; | |
c1e01514 | 648 | unsigned int entries_nr; |
62c476c7 | 649 | int host_irq; |
defaf158 | 650 | bool host_irq_disabled; |
07700a94 | 651 | bool pci_2_3; |
c1e01514 | 652 | struct msix_entry *host_msix_entries; |
62c476c7 | 653 | int guest_irq; |
0645211c | 654 | struct msix_entry *guest_msix_entries; |
4f906c19 | 655 | unsigned long irq_requested_type; |
5550af4d | 656 | int irq_source_id; |
b653574a | 657 | int flags; |
62c476c7 BAY |
658 | struct pci_dev *dev; |
659 | struct kvm *kvm; | |
0645211c | 660 | spinlock_t intx_lock; |
cf9eeac4 | 661 | spinlock_t intx_mask_lock; |
1e001d49 | 662 | char irq_name[32]; |
f8fcfd77 | 663 | struct pci_saved_state *pci_saved_state; |
62c476c7 | 664 | }; |
75858a84 AK |
665 | |
666 | struct kvm_irq_mask_notifier { | |
667 | void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked); | |
668 | int irq; | |
669 | struct hlist_node link; | |
670 | }; | |
671 | ||
672 | void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq, | |
673 | struct kvm_irq_mask_notifier *kimn); | |
674 | void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq, | |
675 | struct kvm_irq_mask_notifier *kimn); | |
4a994358 GN |
676 | void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin, |
677 | bool mask); | |
75858a84 | 678 | |
46e624b9 GN |
679 | #ifdef __KVM_HAVE_IOAPIC |
680 | void kvm_get_intr_delivery_bitmask(struct kvm_ioapic *ioapic, | |
681 | union kvm_ioapic_redirect_entry *entry, | |
682 | unsigned long *deliver_bitmask); | |
683 | #endif | |
684 | int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level); | |
01f21880 | 685 | int kvm_set_irq_inatomic(struct kvm *kvm, int irq_source_id, u32 irq, int level); |
bd2b53b2 MT |
686 | int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm, |
687 | int irq_source_id, int level); | |
44882eed | 688 | void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin); |
3de42dc0 XZ |
689 | void kvm_register_irq_ack_notifier(struct kvm *kvm, |
690 | struct kvm_irq_ack_notifier *kian); | |
fa40a821 MT |
691 | void kvm_unregister_irq_ack_notifier(struct kvm *kvm, |
692 | struct kvm_irq_ack_notifier *kian); | |
5550af4d SY |
693 | int kvm_request_irq_source_id(struct kvm *kvm); |
694 | void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id); | |
62c476c7 | 695 | |
522c68c4 SY |
696 | /* For vcpu->arch.iommu_flags */ |
697 | #define KVM_IOMMU_CACHE_COHERENCY 0x1 | |
698 | ||
19de40a8 | 699 | #ifdef CONFIG_IOMMU_API |
3ad26d81 | 700 | int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
32f6daad | 701 | void kvm_iommu_unmap_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
260782bc | 702 | int kvm_iommu_map_guest(struct kvm *kvm); |
62c476c7 | 703 | int kvm_iommu_unmap_guest(struct kvm *kvm); |
260782bc WH |
704 | int kvm_assign_device(struct kvm *kvm, |
705 | struct kvm_assigned_dev_kernel *assigned_dev); | |
0a920356 WH |
706 | int kvm_deassign_device(struct kvm *kvm, |
707 | struct kvm_assigned_dev_kernel *assigned_dev); | |
19de40a8 | 708 | #else /* CONFIG_IOMMU_API */ |
62c476c7 | 709 | static inline int kvm_iommu_map_pages(struct kvm *kvm, |
d7a79b6c | 710 | struct kvm_memory_slot *slot) |
62c476c7 BAY |
711 | { |
712 | return 0; | |
713 | } | |
714 | ||
32f6daad AW |
715 | static inline void kvm_iommu_unmap_pages(struct kvm *kvm, |
716 | struct kvm_memory_slot *slot) | |
717 | { | |
718 | } | |
719 | ||
260782bc | 720 | static inline int kvm_iommu_map_guest(struct kvm *kvm) |
62c476c7 BAY |
721 | { |
722 | return -ENODEV; | |
723 | } | |
724 | ||
725 | static inline int kvm_iommu_unmap_guest(struct kvm *kvm) | |
726 | { | |
727 | return 0; | |
728 | } | |
260782bc WH |
729 | |
730 | static inline int kvm_assign_device(struct kvm *kvm, | |
731 | struct kvm_assigned_dev_kernel *assigned_dev) | |
732 | { | |
733 | return 0; | |
734 | } | |
0a920356 WH |
735 | |
736 | static inline int kvm_deassign_device(struct kvm *kvm, | |
737 | struct kvm_assigned_dev_kernel *assigned_dev) | |
738 | { | |
739 | return 0; | |
740 | } | |
19de40a8 | 741 | #endif /* CONFIG_IOMMU_API */ |
62c476c7 | 742 | |
d172fcd3 LV |
743 | static inline void kvm_guest_enter(void) |
744 | { | |
8fa22068 | 745 | BUG_ON(preemptible()); |
b080935c FW |
746 | /* |
747 | * This is running in ioctl context so we can avoid | |
748 | * the call to vtime_account() with its unnecessary idle check. | |
749 | */ | |
fd25b4c2 | 750 | vtime_account_system_irqsafe(current); |
d172fcd3 | 751 | current->flags |= PF_VCPU; |
8fa22068 GN |
752 | /* KVM does not hold any references to rcu protected data when it |
753 | * switches CPU into a guest mode. In fact switching to a guest mode | |
754 | * is very similar to exiting to userspase from rcu point of view. In | |
755 | * addition CPU may stay in a guest mode for quite a long time (up to | |
756 | * one time slice). Lets treat guest mode as quiescent state, just like | |
757 | * we do with user-mode execution. | |
758 | */ | |
759 | rcu_virt_note_context_switch(smp_processor_id()); | |
d172fcd3 LV |
760 | } |
761 | ||
762 | static inline void kvm_guest_exit(void) | |
763 | { | |
b080935c FW |
764 | /* |
765 | * This is running in ioctl context so we can avoid | |
766 | * the call to vtime_account() with its unnecessary idle check. | |
767 | */ | |
fd25b4c2 | 768 | vtime_account_system_irqsafe(current); |
d172fcd3 LV |
769 | current->flags &= ~PF_VCPU; |
770 | } | |
771 | ||
9d4cba7f PM |
772 | /* |
773 | * search_memslots() and __gfn_to_memslot() are here because they are | |
774 | * used in non-modular code in arch/powerpc/kvm/book3s_hv_rm_mmu.c. | |
775 | * gfn_to_memslot() itself isn't here as an inline because that would | |
776 | * bloat other code too much. | |
777 | */ | |
778 | static inline struct kvm_memory_slot * | |
779 | search_memslots(struct kvm_memslots *slots, gfn_t gfn) | |
780 | { | |
781 | struct kvm_memory_slot *memslot; | |
782 | ||
783 | kvm_for_each_memslot(memslot, slots) | |
784 | if (gfn >= memslot->base_gfn && | |
785 | gfn < memslot->base_gfn + memslot->npages) | |
786 | return memslot; | |
787 | ||
788 | return NULL; | |
789 | } | |
790 | ||
791 | static inline struct kvm_memory_slot * | |
792 | __gfn_to_memslot(struct kvm_memslots *slots, gfn_t gfn) | |
793 | { | |
794 | return search_memslots(slots, gfn); | |
795 | } | |
796 | ||
66a03505 GS |
797 | static inline unsigned long |
798 | __gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn) | |
799 | { | |
800 | return slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE; | |
801 | } | |
802 | ||
0ee8dcb8 XG |
803 | static inline int memslot_id(struct kvm *kvm, gfn_t gfn) |
804 | { | |
805 | return gfn_to_memslot(kvm, gfn)->id; | |
806 | } | |
807 | ||
fb03cb6f TY |
808 | static inline gfn_t gfn_to_index(gfn_t gfn, gfn_t base_gfn, int level) |
809 | { | |
810 | /* KVM_HPAGE_GFN_SHIFT(PT_PAGE_TABLE_LEVEL) must be 0. */ | |
811 | return (gfn >> KVM_HPAGE_GFN_SHIFT(level)) - | |
812 | (base_gfn >> KVM_HPAGE_GFN_SHIFT(level)); | |
813 | } | |
814 | ||
d19a748b TY |
815 | static inline gfn_t |
816 | hva_to_gfn_memslot(unsigned long hva, struct kvm_memory_slot *slot) | |
887c08ac | 817 | { |
d19a748b TY |
818 | gfn_t gfn_offset = (hva - slot->userspace_addr) >> PAGE_SHIFT; |
819 | ||
820 | return slot->base_gfn + gfn_offset; | |
887c08ac XG |
821 | } |
822 | ||
1755fbcc AK |
823 | static inline gpa_t gfn_to_gpa(gfn_t gfn) |
824 | { | |
825 | return (gpa_t)gfn << PAGE_SHIFT; | |
826 | } | |
6aa8b732 | 827 | |
c30a358d JR |
828 | static inline gfn_t gpa_to_gfn(gpa_t gpa) |
829 | { | |
830 | return (gfn_t)(gpa >> PAGE_SHIFT); | |
831 | } | |
832 | ||
62c476c7 BAY |
833 | static inline hpa_t pfn_to_hpa(pfn_t pfn) |
834 | { | |
835 | return (hpa_t)pfn << PAGE_SHIFT; | |
836 | } | |
837 | ||
2f599714 | 838 | static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu) |
2f52d58c AK |
839 | { |
840 | set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests); | |
841 | } | |
842 | ||
ba1389b7 AK |
843 | enum kvm_stat_kind { |
844 | KVM_STAT_VM, | |
845 | KVM_STAT_VCPU, | |
846 | }; | |
847 | ||
417bc304 HB |
848 | struct kvm_stats_debugfs_item { |
849 | const char *name; | |
850 | int offset; | |
ba1389b7 | 851 | enum kvm_stat_kind kind; |
417bc304 HB |
852 | struct dentry *dentry; |
853 | }; | |
854 | extern struct kvm_stats_debugfs_item debugfs_entries[]; | |
76f7c879 | 855 | extern struct dentry *kvm_debugfs_dir; |
d4c9ff2d | 856 | |
36c1ed82 | 857 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
8ca40a70 | 858 | static inline int mmu_notifier_retry(struct kvm *kvm, unsigned long mmu_seq) |
e930bffe | 859 | { |
8ca40a70 | 860 | if (unlikely(kvm->mmu_notifier_count)) |
e930bffe AA |
861 | return 1; |
862 | /* | |
a355aa54 PM |
863 | * Ensure the read of mmu_notifier_count happens before the read |
864 | * of mmu_notifier_seq. This interacts with the smp_wmb() in | |
865 | * mmu_notifier_invalidate_range_end to make sure that the caller | |
866 | * either sees the old (non-zero) value of mmu_notifier_count or | |
867 | * the new (incremented) value of mmu_notifier_seq. | |
868 | * PowerPC Book3s HV KVM calls this under a per-page lock | |
869 | * rather than under kvm->mmu_lock, for scalability, so | |
870 | * can't rely on kvm->mmu_lock to keep things ordered. | |
e930bffe | 871 | */ |
a355aa54 | 872 | smp_rmb(); |
8ca40a70 | 873 | if (kvm->mmu_notifier_seq != mmu_seq) |
e930bffe AA |
874 | return 1; |
875 | return 0; | |
876 | } | |
877 | #endif | |
878 | ||
9900b4b4 | 879 | #ifdef KVM_CAP_IRQ_ROUTING |
399ec807 AK |
880 | |
881 | #define KVM_MAX_IRQ_ROUTES 1024 | |
882 | ||
883 | int kvm_setup_default_irq_routing(struct kvm *kvm); | |
884 | int kvm_set_irq_routing(struct kvm *kvm, | |
885 | const struct kvm_irq_routing_entry *entries, | |
886 | unsigned nr, | |
887 | unsigned flags); | |
888 | void kvm_free_irq_routing(struct kvm *kvm); | |
889 | ||
07975ad3 JK |
890 | int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi); |
891 | ||
399ec807 AK |
892 | #else |
893 | ||
894 | static inline void kvm_free_irq_routing(struct kvm *kvm) {} | |
895 | ||
896 | #endif | |
897 | ||
721eecbf GH |
898 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
899 | ||
d34e6b17 | 900 | void kvm_eventfd_init(struct kvm *kvm); |
914daba8 AG |
901 | int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args); |
902 | ||
903 | #ifdef CONFIG_HAVE_KVM_IRQCHIP | |
d4db2935 | 904 | int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args); |
721eecbf | 905 | void kvm_irqfd_release(struct kvm *kvm); |
bd2b53b2 | 906 | void kvm_irq_routing_update(struct kvm *, struct kvm_irq_routing_table *); |
914daba8 AG |
907 | #else |
908 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) | |
909 | { | |
910 | return -EINVAL; | |
911 | } | |
912 | ||
913 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
914 | #endif | |
721eecbf GH |
915 | |
916 | #else | |
917 | ||
d34e6b17 | 918 | static inline void kvm_eventfd_init(struct kvm *kvm) {} |
bd2b53b2 | 919 | |
d4db2935 | 920 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) |
721eecbf GH |
921 | { |
922 | return -EINVAL; | |
923 | } | |
924 | ||
925 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
bd2b53b2 | 926 | |
27923eb1 | 927 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 MT |
928 | static inline void kvm_irq_routing_update(struct kvm *kvm, |
929 | struct kvm_irq_routing_table *irq_rt) | |
930 | { | |
931 | rcu_assign_pointer(kvm->irq_routing, irq_rt); | |
932 | } | |
27923eb1 | 933 | #endif |
bd2b53b2 | 934 | |
d34e6b17 GH |
935 | static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) |
936 | { | |
937 | return -ENOSYS; | |
938 | } | |
721eecbf GH |
939 | |
940 | #endif /* CONFIG_HAVE_KVM_EVENTFD */ | |
941 | ||
73880c80 | 942 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
c5af89b6 GN |
943 | static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu) |
944 | { | |
d3efc8ef | 945 | return vcpu->kvm->bsp_vcpu_id == vcpu->vcpu_id; |
c5af89b6 | 946 | } |
3e515705 AK |
947 | |
948 | bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu); | |
949 | ||
950 | #else | |
951 | ||
952 | static inline bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu) { return true; } | |
953 | ||
6aa8b732 | 954 | #endif |
bfd99ff5 AK |
955 | |
956 | #ifdef __KVM_HAVE_DEVICE_ASSIGNMENT | |
957 | ||
958 | long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, | |
959 | unsigned long arg); | |
960 | ||
961 | #else | |
962 | ||
963 | static inline long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, | |
964 | unsigned long arg) | |
965 | { | |
966 | return -ENOTTY; | |
967 | } | |
968 | ||
73880c80 | 969 | #endif |
bfd99ff5 | 970 | |
a8eeb04a AK |
971 | static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu) |
972 | { | |
973 | set_bit(req, &vcpu->requests); | |
974 | } | |
975 | ||
a8eeb04a AK |
976 | static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu) |
977 | { | |
0719837c AK |
978 | if (test_bit(req, &vcpu->requests)) { |
979 | clear_bit(req, &vcpu->requests); | |
980 | return true; | |
981 | } else { | |
982 | return false; | |
983 | } | |
a8eeb04a AK |
984 | } |
985 | ||
4c088493 R |
986 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
987 | ||
988 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
989 | { | |
990 | vcpu->spin_loop.in_spin_loop = val; | |
991 | } | |
992 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
993 | { | |
994 | vcpu->spin_loop.dy_eligible = val; | |
995 | } | |
996 | ||
997 | #else /* !CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ | |
998 | ||
999 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
1000 | { | |
1001 | } | |
1002 | ||
1003 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
1004 | { | |
1005 | } | |
1006 | ||
06e48c51 R |
1007 | static inline bool kvm_vcpu_eligible_for_directed_yield(struct kvm_vcpu *vcpu) |
1008 | { | |
1009 | return true; | |
1010 | } | |
1011 | ||
4c088493 | 1012 | #endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ |
bfd99ff5 AK |
1013 | #endif |
1014 |