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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> |
c11f11fc | 25 | #include <linux/irqflags.h> |
521921ba | 26 | #include <linux/context_tracking.h> |
1a02b270 | 27 | #include <linux/irqbypass.h> |
8577370f | 28 | #include <linux/swait.h> |
e8edc6e0 | 29 | #include <asm/signal.h> |
6aa8b732 | 30 | |
6aa8b732 | 31 | #include <linux/kvm.h> |
102d8325 | 32 | #include <linux/kvm_para.h> |
6aa8b732 | 33 | |
edf88417 | 34 | #include <linux/kvm_types.h> |
d77a39d9 | 35 | |
edf88417 | 36 | #include <asm/kvm_host.h> |
d657a98e | 37 | |
0b1b1dfd GK |
38 | #ifndef KVM_MAX_VCPU_ID |
39 | #define KVM_MAX_VCPU_ID KVM_MAX_VCPUS | |
40 | #endif | |
41 | ||
67b29204 XG |
42 | /* |
43 | * The bit 16 ~ bit 31 of kvm_memory_region::flags are internally used | |
44 | * in kvm, other bits are visible for userspace which are defined in | |
45 | * include/linux/kvm_h. | |
46 | */ | |
47 | #define KVM_MEMSLOT_INVALID (1UL << 16) | |
1050dcda | 48 | #define KVM_MEMSLOT_INCOHERENT (1UL << 17) |
67b29204 | 49 | |
87da7e66 XG |
50 | /* Two fragments for cross MMIO pages. */ |
51 | #define KVM_MAX_MMIO_FRAGMENTS 2 | |
f78146b0 | 52 | |
f481b069 PB |
53 | #ifndef KVM_ADDRESS_SPACE_NUM |
54 | #define KVM_ADDRESS_SPACE_NUM 1 | |
55 | #endif | |
56 | ||
9c5b1172 XG |
57 | /* |
58 | * For the normal pfn, the highest 12 bits should be zero, | |
81c52c56 XG |
59 | * so we can mask bit 62 ~ bit 52 to indicate the error pfn, |
60 | * mask bit 63 to indicate the noslot pfn. | |
9c5b1172 | 61 | */ |
81c52c56 XG |
62 | #define KVM_PFN_ERR_MASK (0x7ffULL << 52) |
63 | #define KVM_PFN_ERR_NOSLOT_MASK (0xfffULL << 52) | |
64 | #define KVM_PFN_NOSLOT (0x1ULL << 63) | |
9c5b1172 XG |
65 | |
66 | #define KVM_PFN_ERR_FAULT (KVM_PFN_ERR_MASK) | |
67 | #define KVM_PFN_ERR_HWPOISON (KVM_PFN_ERR_MASK + 1) | |
81c52c56 | 68 | #define KVM_PFN_ERR_RO_FAULT (KVM_PFN_ERR_MASK + 2) |
6c8ee57b | 69 | |
81c52c56 XG |
70 | /* |
71 | * error pfns indicate that the gfn is in slot but faild to | |
72 | * translate it to pfn on host. | |
73 | */ | |
ba049e93 | 74 | static inline bool is_error_pfn(kvm_pfn_t pfn) |
83f09228 | 75 | { |
9c5b1172 | 76 | return !!(pfn & KVM_PFN_ERR_MASK); |
83f09228 XG |
77 | } |
78 | ||
81c52c56 XG |
79 | /* |
80 | * error_noslot pfns indicate that the gfn can not be | |
81 | * translated to pfn - it is not in slot or failed to | |
82 | * translate it to pfn. | |
83 | */ | |
ba049e93 | 84 | static inline bool is_error_noslot_pfn(kvm_pfn_t pfn) |
83f09228 | 85 | { |
81c52c56 | 86 | return !!(pfn & KVM_PFN_ERR_NOSLOT_MASK); |
83f09228 XG |
87 | } |
88 | ||
81c52c56 | 89 | /* noslot pfn indicates that the gfn is not in slot. */ |
ba049e93 | 90 | static inline bool is_noslot_pfn(kvm_pfn_t pfn) |
83f09228 | 91 | { |
81c52c56 | 92 | return pfn == KVM_PFN_NOSLOT; |
83f09228 XG |
93 | } |
94 | ||
bf640876 DD |
95 | /* |
96 | * architectures with KVM_HVA_ERR_BAD other than PAGE_OFFSET (e.g. s390) | |
97 | * provide own defines and kvm_is_error_hva | |
98 | */ | |
99 | #ifndef KVM_HVA_ERR_BAD | |
100 | ||
7068d097 XG |
101 | #define KVM_HVA_ERR_BAD (PAGE_OFFSET) |
102 | #define KVM_HVA_ERR_RO_BAD (PAGE_OFFSET + PAGE_SIZE) | |
ca3a490c XG |
103 | |
104 | static inline bool kvm_is_error_hva(unsigned long addr) | |
105 | { | |
7068d097 | 106 | return addr >= PAGE_OFFSET; |
ca3a490c XG |
107 | } |
108 | ||
bf640876 DD |
109 | #endif |
110 | ||
6cede2e6 XG |
111 | #define KVM_ERR_PTR_BAD_PAGE (ERR_PTR(-ENOENT)) |
112 | ||
9c5b1172 | 113 | static inline bool is_error_page(struct page *page) |
6cede2e6 XG |
114 | { |
115 | return IS_ERR(page); | |
116 | } | |
117 | ||
d9e368d6 | 118 | /* |
2860c4b1 PB |
119 | * Architecture-independent vcpu->requests bit members |
120 | * Bits 4-7 are reserved for more arch-independent bits. | |
d9e368d6 | 121 | */ |
3176bc3e | 122 | #define KVM_REQ_TLB_FLUSH 0 |
6662ba34 PB |
123 | #define KVM_REQ_MMU_RELOAD 1 |
124 | #define KVM_REQ_PENDING_TIMER 2 | |
125 | #define KVM_REQ_UNHALT 3 | |
0cd31043 | 126 | |
7a84428a AW |
127 | #define KVM_USERSPACE_IRQ_SOURCE_ID 0 |
128 | #define KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID 1 | |
5550af4d | 129 | |
c16f862d | 130 | extern struct kmem_cache *kvm_vcpu_cache; |
6aa8b732 | 131 | |
2f303b74 | 132 | extern spinlock_t kvm_lock; |
fc1b7492 GL |
133 | extern struct list_head vm_list; |
134 | ||
743eeb0b SL |
135 | struct kvm_io_range { |
136 | gpa_t addr; | |
137 | int len; | |
138 | struct kvm_io_device *dev; | |
139 | }; | |
140 | ||
786a9f88 | 141 | #define NR_IOBUS_DEVS 1000 |
a1300716 | 142 | |
2eeb2e94 | 143 | struct kvm_io_bus { |
6ea34c9b AK |
144 | int dev_count; |
145 | int ioeventfd_count; | |
a1300716 | 146 | struct kvm_io_range range[]; |
2eeb2e94 GH |
147 | }; |
148 | ||
e93f8a0f MT |
149 | enum kvm_bus { |
150 | KVM_MMIO_BUS, | |
151 | KVM_PIO_BUS, | |
060f0ce6 | 152 | KVM_VIRTIO_CCW_NOTIFY_BUS, |
68c3b4d1 | 153 | KVM_FAST_MMIO_BUS, |
e93f8a0f MT |
154 | KVM_NR_BUSES |
155 | }; | |
156 | ||
e32edf4f | 157 | int kvm_io_bus_write(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr, |
e93f8a0f | 158 | int len, const void *val); |
e32edf4f NN |
159 | int kvm_io_bus_write_cookie(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, |
160 | gpa_t addr, int len, const void *val, long cookie); | |
161 | int kvm_io_bus_read(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr, | |
162 | int len, void *val); | |
743eeb0b SL |
163 | int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, |
164 | int len, struct kvm_io_device *dev); | |
e93f8a0f MT |
165 | int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx, |
166 | struct kvm_io_device *dev); | |
2eeb2e94 | 167 | |
af585b92 GN |
168 | #ifdef CONFIG_KVM_ASYNC_PF |
169 | struct kvm_async_pf { | |
170 | struct work_struct work; | |
171 | struct list_head link; | |
172 | struct list_head queue; | |
173 | struct kvm_vcpu *vcpu; | |
174 | struct mm_struct *mm; | |
175 | gva_t gva; | |
176 | unsigned long addr; | |
177 | struct kvm_arch_async_pf arch; | |
f2e10669 | 178 | bool wakeup_all; |
af585b92 GN |
179 | }; |
180 | ||
181 | void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu); | |
182 | void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu); | |
e0ead41a | 183 | int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, unsigned long hva, |
af585b92 | 184 | struct kvm_arch_async_pf *arch); |
344d9588 | 185 | int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu); |
af585b92 GN |
186 | #endif |
187 | ||
6b7e2d09 XG |
188 | enum { |
189 | OUTSIDE_GUEST_MODE, | |
190 | IN_GUEST_MODE, | |
c142786c AK |
191 | EXITING_GUEST_MODE, |
192 | READING_SHADOW_PAGE_TABLES, | |
6b7e2d09 XG |
193 | }; |
194 | ||
f78146b0 AK |
195 | /* |
196 | * Sometimes a large or cross-page mmio needs to be broken up into separate | |
197 | * exits for userspace servicing. | |
198 | */ | |
199 | struct kvm_mmio_fragment { | |
200 | gpa_t gpa; | |
201 | void *data; | |
202 | unsigned len; | |
203 | }; | |
204 | ||
d17fbbf7 ZX |
205 | struct kvm_vcpu { |
206 | struct kvm *kvm; | |
31bb117e | 207 | #ifdef CONFIG_PREEMPT_NOTIFIERS |
d17fbbf7 | 208 | struct preempt_notifier preempt_notifier; |
31bb117e | 209 | #endif |
6b7e2d09 | 210 | int cpu; |
d17fbbf7 | 211 | int vcpu_id; |
6b7e2d09 XG |
212 | int srcu_idx; |
213 | int mode; | |
d17fbbf7 | 214 | unsigned long requests; |
d0bfb940 | 215 | unsigned long guest_debug; |
6b7e2d09 | 216 | |
bf9f6ac8 FW |
217 | int pre_pcpu; |
218 | struct list_head blocked_vcpu_list; | |
219 | ||
6b7e2d09 XG |
220 | struct mutex mutex; |
221 | struct kvm_run *run; | |
f656ce01 | 222 | |
d17fbbf7 | 223 | int fpu_active; |
2acf923e | 224 | int guest_fpu_loaded, guest_xcr0_loaded; |
653f52c3 | 225 | unsigned char fpu_counter; |
8577370f | 226 | struct swait_queue_head wq; |
34bb10b7 | 227 | struct pid *pid; |
d17fbbf7 ZX |
228 | int sigset_active; |
229 | sigset_t sigset; | |
230 | struct kvm_vcpu_stat stat; | |
19020f8a | 231 | unsigned int halt_poll_ns; |
3491caf2 | 232 | bool valid_wakeup; |
d17fbbf7 | 233 | |
34c16eec | 234 | #ifdef CONFIG_HAS_IOMEM |
d17fbbf7 ZX |
235 | int mmio_needed; |
236 | int mmio_read_completed; | |
237 | int mmio_is_write; | |
f78146b0 AK |
238 | int mmio_cur_fragment; |
239 | int mmio_nr_fragments; | |
240 | struct kvm_mmio_fragment mmio_fragments[KVM_MAX_MMIO_FRAGMENTS]; | |
34c16eec | 241 | #endif |
1165f5fe | 242 | |
af585b92 GN |
243 | #ifdef CONFIG_KVM_ASYNC_PF |
244 | struct { | |
245 | u32 queued; | |
246 | struct list_head queue; | |
247 | struct list_head done; | |
248 | spinlock_t lock; | |
249 | } async_pf; | |
250 | #endif | |
251 | ||
4c088493 R |
252 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
253 | /* | |
254 | * Cpu relax intercept or pause loop exit optimization | |
255 | * in_spin_loop: set when a vcpu does a pause loop exit | |
256 | * or cpu relax intercepted. | |
257 | * dy_eligible: indicates whether vcpu is eligible for directed yield. | |
258 | */ | |
259 | struct { | |
260 | bool in_spin_loop; | |
261 | bool dy_eligible; | |
262 | } spin_loop; | |
263 | #endif | |
3a08a8f9 | 264 | bool preempted; |
d657a98e ZX |
265 | struct kvm_vcpu_arch arch; |
266 | }; | |
267 | ||
6b7e2d09 XG |
268 | static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu) |
269 | { | |
270 | return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE); | |
271 | } | |
272 | ||
660c22c4 TY |
273 | /* |
274 | * Some of the bitops functions do not support too long bitmaps. | |
275 | * This number must be determined not to exceed such limits. | |
276 | */ | |
277 | #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1) | |
278 | ||
6aa8b732 AK |
279 | struct kvm_memory_slot { |
280 | gfn_t base_gfn; | |
281 | unsigned long npages; | |
6aa8b732 | 282 | unsigned long *dirty_bitmap; |
db3fe4eb | 283 | struct kvm_arch_memory_slot arch; |
8a7ae055 | 284 | unsigned long userspace_addr; |
6104f472 | 285 | u32 flags; |
1e702d9a | 286 | short id; |
6aa8b732 AK |
287 | }; |
288 | ||
87bf6e7d TY |
289 | static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot) |
290 | { | |
291 | return ALIGN(memslot->npages, BITS_PER_LONG) / 8; | |
292 | } | |
293 | ||
84223598 CH |
294 | struct kvm_s390_adapter_int { |
295 | u64 ind_addr; | |
296 | u64 summary_addr; | |
297 | u64 ind_offset; | |
298 | u32 summary_offset; | |
299 | u32 adapter_id; | |
300 | }; | |
301 | ||
5c919412 AS |
302 | struct kvm_hv_sint { |
303 | u32 vcpu; | |
304 | u32 sint; | |
305 | }; | |
306 | ||
399ec807 AK |
307 | struct kvm_kernel_irq_routing_entry { |
308 | u32 gsi; | |
5116d8f6 | 309 | u32 type; |
4925663a | 310 | int (*set)(struct kvm_kernel_irq_routing_entry *e, |
aa2fbe6d YZ |
311 | struct kvm *kvm, int irq_source_id, int level, |
312 | bool line_status); | |
399ec807 AK |
313 | union { |
314 | struct { | |
315 | unsigned irqchip; | |
316 | unsigned pin; | |
317 | } irqchip; | |
79950e10 | 318 | struct msi_msg msi; |
84223598 | 319 | struct kvm_s390_adapter_int adapter; |
5c919412 | 320 | struct kvm_hv_sint hv_sint; |
399ec807 | 321 | }; |
46e624b9 GN |
322 | struct hlist_node link; |
323 | }; | |
324 | ||
b053b2ae SR |
325 | #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING |
326 | struct kvm_irq_routing_table { | |
327 | int chip[KVM_NR_IRQCHIPS][KVM_IRQCHIP_NUM_PINS]; | |
328 | u32 nr_rt_entries; | |
329 | /* | |
330 | * Array indexed by gsi. Each entry contains list of irq chips | |
331 | * the gsi is connected to. | |
332 | */ | |
333 | struct hlist_head map[0]; | |
334 | }; | |
335 | #endif | |
336 | ||
0743247f AW |
337 | #ifndef KVM_PRIVATE_MEM_SLOTS |
338 | #define KVM_PRIVATE_MEM_SLOTS 0 | |
339 | #endif | |
340 | ||
93a5cef0 | 341 | #ifndef KVM_MEM_SLOTS_NUM |
bbacc0c1 | 342 | #define KVM_MEM_SLOTS_NUM (KVM_USER_MEM_SLOTS + KVM_PRIVATE_MEM_SLOTS) |
93a5cef0 XG |
343 | #endif |
344 | ||
f481b069 PB |
345 | #ifndef __KVM_VCPU_MULTIPLE_ADDRESS_SPACE |
346 | static inline int kvm_arch_vcpu_memslots_id(struct kvm_vcpu *vcpu) | |
347 | { | |
348 | return 0; | |
349 | } | |
350 | #endif | |
351 | ||
bf3e05bc XG |
352 | /* |
353 | * Note: | |
354 | * memslots are not sorted by id anymore, please use id_to_memslot() | |
355 | * to get the memslot by its id. | |
356 | */ | |
46a26bf5 | 357 | struct kvm_memslots { |
49c7754c | 358 | u64 generation; |
93a5cef0 | 359 | struct kvm_memory_slot memslots[KVM_MEM_SLOTS_NUM]; |
f85e2cb5 | 360 | /* The mapping table from slot id to the index in memslots[]. */ |
1e702d9a | 361 | short id_to_index[KVM_MEM_SLOTS_NUM]; |
d4ae84a0 | 362 | atomic_t lru_slot; |
9c1a5d38 | 363 | int used_slots; |
46a26bf5 MT |
364 | }; |
365 | ||
6aa8b732 | 366 | struct kvm { |
aaee2c94 | 367 | spinlock_t mmu_lock; |
79fac95e | 368 | struct mutex slots_lock; |
6d4e4c4f | 369 | struct mm_struct *mm; /* userspace tied to this vm */ |
f481b069 | 370 | struct kvm_memslots *memslots[KVM_ADDRESS_SPACE_NUM]; |
bc6678a3 | 371 | struct srcu_struct srcu; |
719d93cd | 372 | struct srcu_struct irq_srcu; |
fb3f0f51 | 373 | struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; |
73880c80 | 374 | atomic_t online_vcpus; |
217ece61 | 375 | int last_boosted_vcpu; |
133de902 | 376 | struct list_head vm_list; |
60eead79 | 377 | struct mutex lock; |
e93f8a0f | 378 | struct kvm_io_bus *buses[KVM_NR_BUSES]; |
721eecbf GH |
379 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
380 | struct { | |
381 | spinlock_t lock; | |
382 | struct list_head items; | |
7a84428a AW |
383 | struct list_head resampler_list; |
384 | struct mutex resampler_lock; | |
721eecbf | 385 | } irqfds; |
d34e6b17 | 386 | struct list_head ioeventfds; |
721eecbf | 387 | #endif |
ba1389b7 | 388 | struct kvm_vm_stat stat; |
d69fb81f | 389 | struct kvm_arch arch; |
d39f13b0 | 390 | atomic_t users_count; |
5f94c174 | 391 | #ifdef KVM_COALESCED_MMIO_PAGE_OFFSET |
5f94c174 | 392 | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; |
2b3c246a SL |
393 | spinlock_t ring_lock; |
394 | struct list_head coalesced_zones; | |
5f94c174 | 395 | #endif |
e930bffe | 396 | |
60eead79 | 397 | struct mutex irq_lock; |
75858a84 | 398 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 | 399 | /* |
9957c86d | 400 | * Update side is protected by irq_lock. |
bd2b53b2 | 401 | */ |
4b6a2872 | 402 | struct kvm_irq_routing_table __rcu *irq_routing; |
c77dcacb PB |
403 | #endif |
404 | #ifdef CONFIG_HAVE_KVM_IRQFD | |
136bdfee | 405 | struct hlist_head irq_ack_notifier_list; |
75858a84 AK |
406 | #endif |
407 | ||
36c1ed82 | 408 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
e930bffe AA |
409 | struct mmu_notifier mmu_notifier; |
410 | unsigned long mmu_notifier_seq; | |
411 | long mmu_notifier_count; | |
412 | #endif | |
a086f6a1 | 413 | long tlbs_dirty; |
07f0a7bd | 414 | struct list_head devices; |
536a6f88 JF |
415 | struct dentry *debugfs_dentry; |
416 | struct kvm_stat_data **debugfs_stat_data; | |
6aa8b732 AK |
417 | }; |
418 | ||
a737f256 CD |
419 | #define kvm_err(fmt, ...) \ |
420 | pr_err("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
421 | #define kvm_info(fmt, ...) \ | |
422 | pr_info("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
423 | #define kvm_debug(fmt, ...) \ | |
424 | pr_debug("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
425 | #define kvm_pr_unimpl(fmt, ...) \ | |
426 | pr_err_ratelimited("kvm [%i]: " fmt, \ | |
427 | task_tgid_nr(current), ## __VA_ARGS__) | |
f0242478 | 428 | |
a737f256 CD |
429 | /* The guest did something we don't support. */ |
430 | #define vcpu_unimpl(vcpu, fmt, ...) \ | |
671d9ab3 BP |
431 | kvm_pr_unimpl("vcpu%i, guest rIP: 0x%lx " fmt, \ |
432 | (vcpu)->vcpu_id, kvm_rip_read(vcpu), ## __VA_ARGS__) | |
6aa8b732 | 433 | |
ee86dbc6 AS |
434 | #define vcpu_debug(vcpu, fmt, ...) \ |
435 | kvm_debug("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__) | |
765eaa0f AS |
436 | #define vcpu_err(vcpu, fmt, ...) \ |
437 | kvm_err("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__) | |
ee86dbc6 | 438 | |
988a2cae GN |
439 | static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i) |
440 | { | |
dd489240 PB |
441 | /* Pairs with smp_wmb() in kvm_vm_ioctl_create_vcpu, in case |
442 | * the caller has read kvm->online_vcpus before (as is the case | |
443 | * for kvm_for_each_vcpu, for example). | |
444 | */ | |
988a2cae GN |
445 | smp_rmb(); |
446 | return kvm->vcpus[i]; | |
447 | } | |
448 | ||
449 | #define kvm_for_each_vcpu(idx, vcpup, kvm) \ | |
b42fc3cb JM |
450 | for (idx = 0; \ |
451 | idx < atomic_read(&kvm->online_vcpus) && \ | |
452 | (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \ | |
453 | idx++) | |
988a2cae | 454 | |
db27a7a3 DH |
455 | static inline struct kvm_vcpu *kvm_get_vcpu_by_id(struct kvm *kvm, int id) |
456 | { | |
9b9e3fc4 | 457 | struct kvm_vcpu *vcpu = NULL; |
db27a7a3 DH |
458 | int i; |
459 | ||
9b9e3fc4 | 460 | if (id < 0) |
c896939f | 461 | return NULL; |
9b9e3fc4 GK |
462 | if (id < KVM_MAX_VCPUS) |
463 | vcpu = kvm_get_vcpu(kvm, id); | |
c896939f DH |
464 | if (vcpu && vcpu->vcpu_id == id) |
465 | return vcpu; | |
db27a7a3 DH |
466 | kvm_for_each_vcpu(i, vcpu, kvm) |
467 | if (vcpu->vcpu_id == id) | |
468 | return vcpu; | |
469 | return NULL; | |
470 | } | |
471 | ||
be6ba0f0 XG |
472 | #define kvm_for_each_memslot(memslot, slots) \ |
473 | for (memslot = &slots->memslots[0]; \ | |
bf3e05bc XG |
474 | memslot < slots->memslots + KVM_MEM_SLOTS_NUM && memslot->npages;\ |
475 | memslot++) | |
be6ba0f0 | 476 | |
fb3f0f51 RR |
477 | int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id); |
478 | void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); | |
479 | ||
9fc77441 | 480 | int __must_check vcpu_load(struct kvm_vcpu *vcpu); |
313a3dc7 CO |
481 | void vcpu_put(struct kvm_vcpu *vcpu); |
482 | ||
6ef768fa PB |
483 | #ifdef __KVM_HAVE_IOAPIC |
484 | void kvm_vcpu_request_scan_ioapic(struct kvm *kvm); | |
abdb080f | 485 | void kvm_arch_post_irq_routing_update(struct kvm *kvm); |
6ef768fa PB |
486 | #else |
487 | static inline void kvm_vcpu_request_scan_ioapic(struct kvm *kvm) | |
488 | { | |
489 | } | |
abdb080f | 490 | static inline void kvm_arch_post_irq_routing_update(struct kvm *kvm) |
b053b2ae SR |
491 | { |
492 | } | |
6ef768fa PB |
493 | #endif |
494 | ||
297e2105 | 495 | #ifdef CONFIG_HAVE_KVM_IRQFD |
a0f155e9 CH |
496 | int kvm_irqfd_init(void); |
497 | void kvm_irqfd_exit(void); | |
498 | #else | |
499 | static inline int kvm_irqfd_init(void) | |
500 | { | |
501 | return 0; | |
502 | } | |
503 | ||
504 | static inline void kvm_irqfd_exit(void) | |
505 | { | |
506 | } | |
507 | #endif | |
0ee75bea | 508 | int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, |
c16f862d | 509 | struct module *module); |
cb498ea2 | 510 | void kvm_exit(void); |
6aa8b732 | 511 | |
d39f13b0 IE |
512 | void kvm_get_kvm(struct kvm *kvm); |
513 | void kvm_put_kvm(struct kvm *kvm); | |
514 | ||
f481b069 | 515 | static inline struct kvm_memslots *__kvm_memslots(struct kvm *kvm, int as_id) |
90d83dc3 | 516 | { |
f481b069 | 517 | return rcu_dereference_check(kvm->memslots[as_id], |
90d83dc3 LJ |
518 | srcu_read_lock_held(&kvm->srcu) |
519 | || lockdep_is_held(&kvm->slots_lock)); | |
520 | } | |
521 | ||
f481b069 PB |
522 | static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm) |
523 | { | |
524 | return __kvm_memslots(kvm, 0); | |
525 | } | |
526 | ||
8e73485c PB |
527 | static inline struct kvm_memslots *kvm_vcpu_memslots(struct kvm_vcpu *vcpu) |
528 | { | |
f481b069 PB |
529 | int as_id = kvm_arch_vcpu_memslots_id(vcpu); |
530 | ||
531 | return __kvm_memslots(vcpu->kvm, as_id); | |
8e73485c PB |
532 | } |
533 | ||
28a37544 XG |
534 | static inline struct kvm_memory_slot * |
535 | id_to_memslot(struct kvm_memslots *slots, int id) | |
536 | { | |
f85e2cb5 XG |
537 | int index = slots->id_to_index[id]; |
538 | struct kvm_memory_slot *slot; | |
bf3e05bc | 539 | |
f85e2cb5 | 540 | slot = &slots->memslots[index]; |
bf3e05bc | 541 | |
f85e2cb5 XG |
542 | WARN_ON(slot->id != id); |
543 | return slot; | |
28a37544 XG |
544 | } |
545 | ||
74d0727c TY |
546 | /* |
547 | * KVM_SET_USER_MEMORY_REGION ioctl allows the following operations: | |
548 | * - create a new memory slot | |
549 | * - delete an existing memory slot | |
550 | * - modify an existing memory slot | |
551 | * -- move it in the guest physical memory space | |
552 | * -- just change its flags | |
553 | * | |
554 | * Since flags can be changed by some of these operations, the following | |
555 | * differentiation is the best we can do for __kvm_set_memory_region(): | |
556 | */ | |
557 | enum kvm_mr_change { | |
558 | KVM_MR_CREATE, | |
559 | KVM_MR_DELETE, | |
560 | KVM_MR_MOVE, | |
561 | KVM_MR_FLAGS_ONLY, | |
562 | }; | |
563 | ||
210c7c4d | 564 | int kvm_set_memory_region(struct kvm *kvm, |
09170a49 | 565 | const struct kvm_userspace_memory_region *mem); |
f78e0e2e | 566 | int __kvm_set_memory_region(struct kvm *kvm, |
09170a49 | 567 | const struct kvm_userspace_memory_region *mem); |
5587027c | 568 | void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free, |
db3fe4eb | 569 | struct kvm_memory_slot *dont); |
5587027c AK |
570 | int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, |
571 | unsigned long npages); | |
15f46015 | 572 | void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots); |
f7784b8e MT |
573 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
574 | struct kvm_memory_slot *memslot, | |
09170a49 | 575 | const struct kvm_userspace_memory_region *mem, |
7b6195a9 | 576 | enum kvm_mr_change change); |
f7784b8e | 577 | void kvm_arch_commit_memory_region(struct kvm *kvm, |
09170a49 | 578 | const struct kvm_userspace_memory_region *mem, |
8482644a | 579 | const struct kvm_memory_slot *old, |
f36f3f28 | 580 | const struct kvm_memory_slot *new, |
8482644a | 581 | enum kvm_mr_change change); |
db3fe4eb | 582 | bool kvm_largepages_enabled(void); |
54dee993 | 583 | void kvm_disable_largepages(void); |
2df72e9b MT |
584 | /* flush all memory translations */ |
585 | void kvm_arch_flush_shadow_all(struct kvm *kvm); | |
586 | /* flush memory translations pointing to 'slot' */ | |
587 | void kvm_arch_flush_shadow_memslot(struct kvm *kvm, | |
588 | struct kvm_memory_slot *slot); | |
a983fb23 | 589 | |
d9ef13c2 PB |
590 | int gfn_to_page_many_atomic(struct kvm_memory_slot *slot, gfn_t gfn, |
591 | struct page **pages, int nr_pages); | |
48987781 | 592 | |
954bbbc2 | 593 | struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); |
05da4558 | 594 | unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn); |
ba6a3541 | 595 | unsigned long gfn_to_hva_prot(struct kvm *kvm, gfn_t gfn, bool *writable); |
4d8b81ab | 596 | unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
64d83126 CD |
597 | unsigned long gfn_to_hva_memslot_prot(struct kvm_memory_slot *slot, gfn_t gfn, |
598 | bool *writable); | |
b4231d61 IE |
599 | void kvm_release_page_clean(struct page *page); |
600 | void kvm_release_page_dirty(struct page *page); | |
35149e21 AL |
601 | void kvm_set_page_accessed(struct page *page); |
602 | ||
ba049e93 DW |
603 | kvm_pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn); |
604 | kvm_pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn); | |
605 | kvm_pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault, | |
612819c3 | 606 | bool *writable); |
ba049e93 DW |
607 | kvm_pfn_t gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
608 | kvm_pfn_t gfn_to_pfn_memslot_atomic(struct kvm_memory_slot *slot, gfn_t gfn); | |
609 | kvm_pfn_t __gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn, | |
610 | bool atomic, bool *async, bool write_fault, | |
611 | bool *writable); | |
037d92dc | 612 | |
ba049e93 DW |
613 | void kvm_release_pfn_clean(kvm_pfn_t pfn); |
614 | void kvm_set_pfn_dirty(kvm_pfn_t pfn); | |
615 | void kvm_set_pfn_accessed(kvm_pfn_t pfn); | |
616 | void kvm_get_pfn(kvm_pfn_t pfn); | |
35149e21 | 617 | |
195aefde IE |
618 | int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, |
619 | int len); | |
7ec54588 MT |
620 | int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data, |
621 | unsigned long len); | |
195aefde | 622 | int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); |
e03b644f GN |
623 | int kvm_read_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
624 | void *data, unsigned long len); | |
195aefde IE |
625 | int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, |
626 | int offset, int len); | |
627 | int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, | |
628 | unsigned long len); | |
49c7754c GN |
629 | int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
630 | void *data, unsigned long len); | |
631 | int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc, | |
8f964525 | 632 | gpa_t gpa, unsigned long len); |
195aefde IE |
633 | int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); |
634 | int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); | |
6aa8b732 | 635 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); |
33e94154 | 636 | bool kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); |
8f0b1ab6 | 637 | unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn); |
6aa8b732 AK |
638 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); |
639 | ||
8e73485c PB |
640 | struct kvm_memslots *kvm_vcpu_memslots(struct kvm_vcpu *vcpu); |
641 | struct kvm_memory_slot *kvm_vcpu_gfn_to_memslot(struct kvm_vcpu *vcpu, gfn_t gfn); | |
ba049e93 DW |
642 | kvm_pfn_t kvm_vcpu_gfn_to_pfn_atomic(struct kvm_vcpu *vcpu, gfn_t gfn); |
643 | kvm_pfn_t kvm_vcpu_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn); | |
8e73485c PB |
644 | struct page *kvm_vcpu_gfn_to_page(struct kvm_vcpu *vcpu, gfn_t gfn); |
645 | unsigned long kvm_vcpu_gfn_to_hva(struct kvm_vcpu *vcpu, gfn_t gfn); | |
646 | unsigned long kvm_vcpu_gfn_to_hva_prot(struct kvm_vcpu *vcpu, gfn_t gfn, bool *writable); | |
647 | int kvm_vcpu_read_guest_page(struct kvm_vcpu *vcpu, gfn_t gfn, void *data, int offset, | |
648 | int len); | |
649 | int kvm_vcpu_read_guest_atomic(struct kvm_vcpu *vcpu, gpa_t gpa, void *data, | |
650 | unsigned long len); | |
651 | int kvm_vcpu_read_guest(struct kvm_vcpu *vcpu, gpa_t gpa, void *data, | |
652 | unsigned long len); | |
653 | int kvm_vcpu_write_guest_page(struct kvm_vcpu *vcpu, gfn_t gfn, const void *data, | |
654 | int offset, int len); | |
655 | int kvm_vcpu_write_guest(struct kvm_vcpu *vcpu, gpa_t gpa, const void *data, | |
656 | unsigned long len); | |
657 | void kvm_vcpu_mark_page_dirty(struct kvm_vcpu *vcpu, gfn_t gfn); | |
658 | ||
8776e519 | 659 | void kvm_vcpu_block(struct kvm_vcpu *vcpu); |
3217f7c2 CD |
660 | void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu); |
661 | void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu); | |
dd1a4cc1 | 662 | void kvm_vcpu_wake_up(struct kvm_vcpu *vcpu); |
b6d33834 | 663 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
fa93384f | 664 | int kvm_vcpu_yield_to(struct kvm_vcpu *target); |
d255f4f2 | 665 | void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu); |
7702fd1f AK |
666 | void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); |
667 | void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); | |
a4ee1ca4 | 668 | |
d9e368d6 | 669 | void kvm_flush_remote_tlbs(struct kvm *kvm); |
2e53d63a | 670 | void kvm_reload_remote_mmus(struct kvm *kvm); |
445b8236 | 671 | bool kvm_make_all_cpus_request(struct kvm *kvm, unsigned int req); |
6aa8b732 | 672 | |
043405e1 CO |
673 | long kvm_arch_dev_ioctl(struct file *filp, |
674 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 CO |
675 | long kvm_arch_vcpu_ioctl(struct file *filp, |
676 | unsigned int ioctl, unsigned long arg); | |
5b1c1493 | 677 | int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf); |
018d00d2 | 678 | |
784aa3d7 | 679 | int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext); |
018d00d2 | 680 | |
5bb064dc ZX |
681 | int kvm_get_dirty_log(struct kvm *kvm, |
682 | struct kvm_dirty_log *log, int *is_dirty); | |
ba0513b5 MS |
683 | |
684 | int kvm_get_dirty_log_protect(struct kvm *kvm, | |
685 | struct kvm_dirty_log *log, bool *is_dirty); | |
686 | ||
3b0f1d01 | 687 | void kvm_arch_mmu_enable_log_dirty_pt_masked(struct kvm *kvm, |
ba0513b5 MS |
688 | struct kvm_memory_slot *slot, |
689 | gfn_t gfn_offset, | |
690 | unsigned long mask); | |
691 | ||
5bb064dc ZX |
692 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, |
693 | struct kvm_dirty_log *log); | |
694 | ||
aa2fbe6d YZ |
695 | int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_level, |
696 | bool line_status); | |
1fe779f8 CO |
697 | long kvm_arch_vm_ioctl(struct file *filp, |
698 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 | 699 | |
d0752060 HB |
700 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); |
701 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); | |
702 | ||
8b006791 ZX |
703 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, |
704 | struct kvm_translation *tr); | |
705 | ||
b6c7a5dc HB |
706 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); |
707 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); | |
708 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
709 | struct kvm_sregs *sregs); | |
710 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
711 | struct kvm_sregs *sregs); | |
62d9f0db MT |
712 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
713 | struct kvm_mp_state *mp_state); | |
714 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
715 | struct kvm_mp_state *mp_state); | |
d0bfb940 JK |
716 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
717 | struct kvm_guest_debug *dbg); | |
b6c7a5dc HB |
718 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); |
719 | ||
f8c16bba ZX |
720 | int kvm_arch_init(void *opaque); |
721 | void kvm_arch_exit(void); | |
043405e1 | 722 | |
e9b11c17 ZX |
723 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); |
724 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu); | |
725 | ||
e790d9ef RK |
726 | void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu); |
727 | ||
e9b11c17 ZX |
728 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu); |
729 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
730 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); | |
731 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); | |
26e5215f | 732 | int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu); |
31928aa5 | 733 | void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu); |
d40ccc62 | 734 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu); |
e9b11c17 | 735 | |
13a34e06 RK |
736 | int kvm_arch_hardware_enable(void); |
737 | void kvm_arch_hardware_disable(void); | |
e9b11c17 ZX |
738 | int kvm_arch_hardware_setup(void); |
739 | void kvm_arch_hardware_unsetup(void); | |
740 | void kvm_arch_check_processor_compat(void *rtn); | |
1d737c8a | 741 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu); |
b6d33834 | 742 | int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu); |
e9b11c17 | 743 | |
c1a7b32a | 744 | void *kvm_kvzalloc(unsigned long size); |
c1a7b32a | 745 | |
d89f5eff JK |
746 | #ifndef __KVM_HAVE_ARCH_VM_ALLOC |
747 | static inline struct kvm *kvm_arch_alloc_vm(void) | |
748 | { | |
749 | return kzalloc(sizeof(struct kvm), GFP_KERNEL); | |
750 | } | |
751 | ||
752 | static inline void kvm_arch_free_vm(struct kvm *kvm) | |
753 | { | |
754 | kfree(kvm); | |
755 | } | |
756 | #endif | |
757 | ||
e0f0bbc5 AW |
758 | #ifdef __KVM_HAVE_ARCH_NONCOHERENT_DMA |
759 | void kvm_arch_register_noncoherent_dma(struct kvm *kvm); | |
760 | void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm); | |
761 | bool kvm_arch_has_noncoherent_dma(struct kvm *kvm); | |
762 | #else | |
763 | static inline void kvm_arch_register_noncoherent_dma(struct kvm *kvm) | |
764 | { | |
765 | } | |
766 | ||
767 | static inline void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm) | |
768 | { | |
769 | } | |
770 | ||
771 | static inline bool kvm_arch_has_noncoherent_dma(struct kvm *kvm) | |
772 | { | |
773 | return false; | |
774 | } | |
775 | #endif | |
5544eb9b PB |
776 | #ifdef __KVM_HAVE_ARCH_ASSIGNED_DEVICE |
777 | void kvm_arch_start_assignment(struct kvm *kvm); | |
778 | void kvm_arch_end_assignment(struct kvm *kvm); | |
779 | bool kvm_arch_has_assigned_device(struct kvm *kvm); | |
780 | #else | |
781 | static inline void kvm_arch_start_assignment(struct kvm *kvm) | |
782 | { | |
783 | } | |
784 | ||
785 | static inline void kvm_arch_end_assignment(struct kvm *kvm) | |
786 | { | |
787 | } | |
788 | ||
789 | static inline bool kvm_arch_has_assigned_device(struct kvm *kvm) | |
790 | { | |
791 | return false; | |
792 | } | |
793 | #endif | |
e0f0bbc5 | 794 | |
8577370f | 795 | static inline struct swait_queue_head *kvm_arch_vcpu_wq(struct kvm_vcpu *vcpu) |
b6d33834 | 796 | { |
2246f8b5 AG |
797 | #ifdef __KVM_HAVE_ARCH_WQP |
798 | return vcpu->arch.wqp; | |
799 | #else | |
b6d33834 | 800 | return &vcpu->wq; |
b6d33834 | 801 | #endif |
2246f8b5 | 802 | } |
b6d33834 | 803 | |
01c94e64 EA |
804 | #ifdef __KVM_HAVE_ARCH_INTC_INITIALIZED |
805 | /* | |
806 | * returns true if the virtual interrupt controller is initialized and | |
807 | * ready to accept virtual IRQ. On some architectures the virtual interrupt | |
808 | * controller is dynamically instantiated and this is not always true. | |
809 | */ | |
810 | bool kvm_arch_intc_initialized(struct kvm *kvm); | |
811 | #else | |
812 | static inline bool kvm_arch_intc_initialized(struct kvm *kvm) | |
813 | { | |
814 | return true; | |
815 | } | |
816 | #endif | |
817 | ||
e08b9637 | 818 | int kvm_arch_init_vm(struct kvm *kvm, unsigned long type); |
d19a9cd2 | 819 | void kvm_arch_destroy_vm(struct kvm *kvm); |
ad8ba2cd | 820 | void kvm_arch_sync_events(struct kvm *kvm); |
e9b11c17 | 821 | |
3d80840d | 822 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu); |
5736199a | 823 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
682c59a3 | 824 | |
ba049e93 | 825 | bool kvm_is_reserved_pfn(kvm_pfn_t pfn); |
c77fb9dc | 826 | |
62c476c7 BAY |
827 | struct kvm_irq_ack_notifier { |
828 | struct hlist_node link; | |
829 | unsigned gsi; | |
830 | void (*irq_acked)(struct kvm_irq_ack_notifier *kian); | |
831 | }; | |
832 | ||
9957c86d PM |
833 | int kvm_irq_map_gsi(struct kvm *kvm, |
834 | struct kvm_kernel_irq_routing_entry *entries, int gsi); | |
835 | int kvm_irq_map_chip_pin(struct kvm *kvm, unsigned irqchip, unsigned pin); | |
8ba918d4 | 836 | |
aa2fbe6d YZ |
837 | int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level, |
838 | bool line_status); | |
bd2b53b2 | 839 | int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm, |
aa2fbe6d | 840 | int irq_source_id, int level, bool line_status); |
b97e6de9 PB |
841 | int kvm_arch_set_irq_inatomic(struct kvm_kernel_irq_routing_entry *e, |
842 | struct kvm *kvm, int irq_source_id, | |
843 | int level, bool line_status); | |
c7c9c56c | 844 | bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin); |
ba1aefcd | 845 | void kvm_notify_acked_gsi(struct kvm *kvm, int gsi); |
44882eed | 846 | void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin); |
3de42dc0 XZ |
847 | void kvm_register_irq_ack_notifier(struct kvm *kvm, |
848 | struct kvm_irq_ack_notifier *kian); | |
fa40a821 MT |
849 | void kvm_unregister_irq_ack_notifier(struct kvm *kvm, |
850 | struct kvm_irq_ack_notifier *kian); | |
5550af4d SY |
851 | int kvm_request_irq_source_id(struct kvm *kvm); |
852 | void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id); | |
62c476c7 | 853 | |
2a5bab10 | 854 | #ifdef CONFIG_KVM_DEVICE_ASSIGNMENT |
3ad26d81 | 855 | int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
32f6daad | 856 | void kvm_iommu_unmap_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
2a5bab10 | 857 | #else |
62c476c7 | 858 | static inline int kvm_iommu_map_pages(struct kvm *kvm, |
d7a79b6c | 859 | struct kvm_memory_slot *slot) |
62c476c7 BAY |
860 | { |
861 | return 0; | |
862 | } | |
863 | ||
32f6daad AW |
864 | static inline void kvm_iommu_unmap_pages(struct kvm *kvm, |
865 | struct kvm_memory_slot *slot) | |
866 | { | |
867 | } | |
2a5bab10 | 868 | #endif |
62c476c7 | 869 | |
0097d12e CB |
870 | /* must be called with irqs disabled */ |
871 | static inline void __kvm_guest_enter(void) | |
c11f11fc | 872 | { |
c11f11fc | 873 | guest_enter(); |
8fa22068 GN |
874 | /* KVM does not hold any references to rcu protected data when it |
875 | * switches CPU into a guest mode. In fact switching to a guest mode | |
81e87e26 | 876 | * is very similar to exiting to userspace from rcu point of view. In |
8fa22068 GN |
877 | * addition CPU may stay in a guest mode for quite a long time (up to |
878 | * one time slice). Lets treat guest mode as quiescent state, just like | |
879 | * we do with user-mode execution. | |
880 | */ | |
126a6a54 RR |
881 | if (!context_tracking_cpu_is_enabled()) |
882 | rcu_virt_note_context_switch(smp_processor_id()); | |
d172fcd3 LV |
883 | } |
884 | ||
0097d12e CB |
885 | /* must be called with irqs disabled */ |
886 | static inline void __kvm_guest_exit(void) | |
887 | { | |
888 | guest_exit(); | |
889 | } | |
890 | ||
891 | static inline void kvm_guest_enter(void) | |
892 | { | |
893 | unsigned long flags; | |
894 | ||
895 | local_irq_save(flags); | |
896 | __kvm_guest_enter(); | |
897 | local_irq_restore(flags); | |
898 | } | |
899 | ||
d172fcd3 LV |
900 | static inline void kvm_guest_exit(void) |
901 | { | |
c11f11fc FW |
902 | unsigned long flags; |
903 | ||
904 | local_irq_save(flags); | |
0097d12e | 905 | __kvm_guest_exit(); |
c11f11fc | 906 | local_irq_restore(flags); |
d172fcd3 LV |
907 | } |
908 | ||
9d4cba7f PM |
909 | /* |
910 | * search_memslots() and __gfn_to_memslot() are here because they are | |
911 | * used in non-modular code in arch/powerpc/kvm/book3s_hv_rm_mmu.c. | |
912 | * gfn_to_memslot() itself isn't here as an inline because that would | |
913 | * bloat other code too much. | |
914 | */ | |
915 | static inline struct kvm_memory_slot * | |
916 | search_memslots(struct kvm_memslots *slots, gfn_t gfn) | |
917 | { | |
9c1a5d38 | 918 | int start = 0, end = slots->used_slots; |
d4ae84a0 | 919 | int slot = atomic_read(&slots->lru_slot); |
9c1a5d38 IM |
920 | struct kvm_memory_slot *memslots = slots->memslots; |
921 | ||
922 | if (gfn >= memslots[slot].base_gfn && | |
923 | gfn < memslots[slot].base_gfn + memslots[slot].npages) | |
924 | return &memslots[slot]; | |
925 | ||
926 | while (start < end) { | |
927 | slot = start + (end - start) / 2; | |
928 | ||
929 | if (gfn >= memslots[slot].base_gfn) | |
930 | end = slot; | |
931 | else | |
932 | start = slot + 1; | |
933 | } | |
934 | ||
935 | if (gfn >= memslots[start].base_gfn && | |
936 | gfn < memslots[start].base_gfn + memslots[start].npages) { | |
937 | atomic_set(&slots->lru_slot, start); | |
938 | return &memslots[start]; | |
939 | } | |
9d4cba7f PM |
940 | |
941 | return NULL; | |
942 | } | |
943 | ||
944 | static inline struct kvm_memory_slot * | |
945 | __gfn_to_memslot(struct kvm_memslots *slots, gfn_t gfn) | |
946 | { | |
947 | return search_memslots(slots, gfn); | |
948 | } | |
949 | ||
66a03505 GS |
950 | static inline unsigned long |
951 | __gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn) | |
952 | { | |
953 | return slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE; | |
954 | } | |
955 | ||
0ee8dcb8 XG |
956 | static inline int memslot_id(struct kvm *kvm, gfn_t gfn) |
957 | { | |
958 | return gfn_to_memslot(kvm, gfn)->id; | |
959 | } | |
960 | ||
d19a748b TY |
961 | static inline gfn_t |
962 | hva_to_gfn_memslot(unsigned long hva, struct kvm_memory_slot *slot) | |
887c08ac | 963 | { |
d19a748b TY |
964 | gfn_t gfn_offset = (hva - slot->userspace_addr) >> PAGE_SHIFT; |
965 | ||
966 | return slot->base_gfn + gfn_offset; | |
887c08ac XG |
967 | } |
968 | ||
1755fbcc AK |
969 | static inline gpa_t gfn_to_gpa(gfn_t gfn) |
970 | { | |
971 | return (gpa_t)gfn << PAGE_SHIFT; | |
972 | } | |
6aa8b732 | 973 | |
c30a358d JR |
974 | static inline gfn_t gpa_to_gfn(gpa_t gpa) |
975 | { | |
976 | return (gfn_t)(gpa >> PAGE_SHIFT); | |
977 | } | |
978 | ||
ba049e93 | 979 | static inline hpa_t pfn_to_hpa(kvm_pfn_t pfn) |
62c476c7 BAY |
980 | { |
981 | return (hpa_t)pfn << PAGE_SHIFT; | |
982 | } | |
983 | ||
dfeec843 HC |
984 | static inline bool kvm_is_error_gpa(struct kvm *kvm, gpa_t gpa) |
985 | { | |
986 | unsigned long hva = gfn_to_hva(kvm, gpa_to_gfn(gpa)); | |
987 | ||
988 | return kvm_is_error_hva(hva); | |
989 | } | |
990 | ||
ba1389b7 AK |
991 | enum kvm_stat_kind { |
992 | KVM_STAT_VM, | |
993 | KVM_STAT_VCPU, | |
994 | }; | |
995 | ||
536a6f88 JF |
996 | struct kvm_stat_data { |
997 | int offset; | |
998 | struct kvm *kvm; | |
999 | }; | |
1000 | ||
417bc304 HB |
1001 | struct kvm_stats_debugfs_item { |
1002 | const char *name; | |
1003 | int offset; | |
ba1389b7 | 1004 | enum kvm_stat_kind kind; |
417bc304 HB |
1005 | }; |
1006 | extern struct kvm_stats_debugfs_item debugfs_entries[]; | |
76f7c879 | 1007 | extern struct dentry *kvm_debugfs_dir; |
d4c9ff2d | 1008 | |
36c1ed82 | 1009 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
8ca40a70 | 1010 | static inline int mmu_notifier_retry(struct kvm *kvm, unsigned long mmu_seq) |
e930bffe | 1011 | { |
8ca40a70 | 1012 | if (unlikely(kvm->mmu_notifier_count)) |
e930bffe AA |
1013 | return 1; |
1014 | /* | |
a355aa54 PM |
1015 | * Ensure the read of mmu_notifier_count happens before the read |
1016 | * of mmu_notifier_seq. This interacts with the smp_wmb() in | |
1017 | * mmu_notifier_invalidate_range_end to make sure that the caller | |
1018 | * either sees the old (non-zero) value of mmu_notifier_count or | |
1019 | * the new (incremented) value of mmu_notifier_seq. | |
1020 | * PowerPC Book3s HV KVM calls this under a per-page lock | |
1021 | * rather than under kvm->mmu_lock, for scalability, so | |
1022 | * can't rely on kvm->mmu_lock to keep things ordered. | |
e930bffe | 1023 | */ |
a355aa54 | 1024 | smp_rmb(); |
8ca40a70 | 1025 | if (kvm->mmu_notifier_seq != mmu_seq) |
e930bffe AA |
1026 | return 1; |
1027 | return 0; | |
1028 | } | |
1029 | #endif | |
1030 | ||
a725d56a | 1031 | #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING |
399ec807 | 1032 | |
f3f710bc CH |
1033 | #ifdef CONFIG_S390 |
1034 | #define KVM_MAX_IRQ_ROUTES 4096 //FIXME: we can have more than that... | |
1035 | #else | |
399ec807 | 1036 | #define KVM_MAX_IRQ_ROUTES 1024 |
f3f710bc | 1037 | #endif |
399ec807 AK |
1038 | |
1039 | int kvm_setup_default_irq_routing(struct kvm *kvm); | |
49df6397 | 1040 | int kvm_setup_empty_irq_routing(struct kvm *kvm); |
399ec807 AK |
1041 | int kvm_set_irq_routing(struct kvm *kvm, |
1042 | const struct kvm_irq_routing_entry *entries, | |
1043 | unsigned nr, | |
1044 | unsigned flags); | |
8ba918d4 | 1045 | int kvm_set_routing_entry(struct kvm_kernel_irq_routing_entry *e, |
e8cde093 | 1046 | const struct kvm_irq_routing_entry *ue); |
399ec807 AK |
1047 | void kvm_free_irq_routing(struct kvm *kvm); |
1048 | ||
1049 | #else | |
1050 | ||
1051 | static inline void kvm_free_irq_routing(struct kvm *kvm) {} | |
1052 | ||
1053 | #endif | |
1054 | ||
297e2105 PM |
1055 | int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi); |
1056 | ||
721eecbf GH |
1057 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
1058 | ||
d34e6b17 | 1059 | void kvm_eventfd_init(struct kvm *kvm); |
914daba8 AG |
1060 | int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args); |
1061 | ||
297e2105 | 1062 | #ifdef CONFIG_HAVE_KVM_IRQFD |
d4db2935 | 1063 | int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args); |
721eecbf | 1064 | void kvm_irqfd_release(struct kvm *kvm); |
9957c86d | 1065 | void kvm_irq_routing_update(struct kvm *); |
914daba8 AG |
1066 | #else |
1067 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) | |
1068 | { | |
1069 | return -EINVAL; | |
1070 | } | |
1071 | ||
1072 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
1073 | #endif | |
721eecbf GH |
1074 | |
1075 | #else | |
1076 | ||
d34e6b17 | 1077 | static inline void kvm_eventfd_init(struct kvm *kvm) {} |
bd2b53b2 | 1078 | |
d4db2935 | 1079 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) |
721eecbf GH |
1080 | { |
1081 | return -EINVAL; | |
1082 | } | |
1083 | ||
1084 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
bd2b53b2 | 1085 | |
27923eb1 | 1086 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
9957c86d | 1087 | static inline void kvm_irq_routing_update(struct kvm *kvm) |
bd2b53b2 | 1088 | { |
bd2b53b2 | 1089 | } |
27923eb1 | 1090 | #endif |
abdb080f | 1091 | void kvm_arch_irq_routing_update(struct kvm *kvm); |
bd2b53b2 | 1092 | |
d34e6b17 GH |
1093 | static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) |
1094 | { | |
1095 | return -ENOSYS; | |
1096 | } | |
721eecbf GH |
1097 | |
1098 | #endif /* CONFIG_HAVE_KVM_EVENTFD */ | |
1099 | ||
73880c80 | 1100 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
3e515705 | 1101 | bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu); |
3e515705 | 1102 | #else |
3e515705 | 1103 | static inline bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu) { return true; } |
6aa8b732 | 1104 | #endif |
bfd99ff5 | 1105 | |
a8eeb04a AK |
1106 | static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu) |
1107 | { | |
2e4682ba PB |
1108 | /* |
1109 | * Ensure the rest of the request is published to kvm_check_request's | |
1110 | * caller. Paired with the smp_mb__after_atomic in kvm_check_request. | |
1111 | */ | |
1112 | smp_wmb(); | |
a8eeb04a AK |
1113 | set_bit(req, &vcpu->requests); |
1114 | } | |
1115 | ||
a8eeb04a AK |
1116 | static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu) |
1117 | { | |
0719837c AK |
1118 | if (test_bit(req, &vcpu->requests)) { |
1119 | clear_bit(req, &vcpu->requests); | |
2e4682ba PB |
1120 | |
1121 | /* | |
1122 | * Ensure the rest of the request is visible to kvm_check_request's | |
1123 | * caller. Paired with the smp_wmb in kvm_make_request. | |
1124 | */ | |
1125 | smp_mb__after_atomic(); | |
0719837c AK |
1126 | return true; |
1127 | } else { | |
1128 | return false; | |
1129 | } | |
a8eeb04a AK |
1130 | } |
1131 | ||
8b415dcd GL |
1132 | extern bool kvm_rebooting; |
1133 | ||
852b6d57 SW |
1134 | struct kvm_device { |
1135 | struct kvm_device_ops *ops; | |
1136 | struct kvm *kvm; | |
852b6d57 | 1137 | void *private; |
07f0a7bd | 1138 | struct list_head vm_node; |
852b6d57 SW |
1139 | }; |
1140 | ||
1141 | /* create, destroy, and name are mandatory */ | |
1142 | struct kvm_device_ops { | |
1143 | const char *name; | |
1144 | int (*create)(struct kvm_device *dev, u32 type); | |
1145 | ||
1146 | /* | |
1147 | * Destroy is responsible for freeing dev. | |
1148 | * | |
1149 | * Destroy may be called before or after destructors are called | |
1150 | * on emulated I/O regions, depending on whether a reference is | |
1151 | * held by a vcpu or other kvm component that gets destroyed | |
1152 | * after the emulated I/O. | |
1153 | */ | |
1154 | void (*destroy)(struct kvm_device *dev); | |
1155 | ||
1156 | int (*set_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1157 | int (*get_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1158 | int (*has_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1159 | long (*ioctl)(struct kvm_device *dev, unsigned int ioctl, | |
1160 | unsigned long arg); | |
1161 | }; | |
1162 | ||
1163 | void kvm_device_get(struct kvm_device *dev); | |
1164 | void kvm_device_put(struct kvm_device *dev); | |
1165 | struct kvm_device *kvm_device_from_filp(struct file *filp); | |
d60eacb0 | 1166 | int kvm_register_device_ops(struct kvm_device_ops *ops, u32 type); |
571ee1b6 | 1167 | void kvm_unregister_device_ops(u32 type); |
852b6d57 | 1168 | |
5df554ad | 1169 | extern struct kvm_device_ops kvm_mpic_ops; |
5975a2e0 | 1170 | extern struct kvm_device_ops kvm_xics_ops; |
ea2f83a7 | 1171 | extern struct kvm_device_ops kvm_arm_vgic_v2_ops; |
a0675c25 | 1172 | extern struct kvm_device_ops kvm_arm_vgic_v3_ops; |
5df554ad | 1173 | |
4c088493 R |
1174 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
1175 | ||
1176 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
1177 | { | |
1178 | vcpu->spin_loop.in_spin_loop = val; | |
1179 | } | |
1180 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
1181 | { | |
1182 | vcpu->spin_loop.dy_eligible = val; | |
1183 | } | |
1184 | ||
1185 | #else /* !CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ | |
1186 | ||
1187 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
1188 | { | |
1189 | } | |
1190 | ||
1191 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
1192 | { | |
1193 | } | |
4c088493 | 1194 | #endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ |
1a02b270 EA |
1195 | |
1196 | #ifdef CONFIG_HAVE_KVM_IRQ_BYPASS | |
14717e20 | 1197 | bool kvm_arch_has_irq_bypass(void); |
1a02b270 EA |
1198 | int kvm_arch_irq_bypass_add_producer(struct irq_bypass_consumer *, |
1199 | struct irq_bypass_producer *); | |
1200 | void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer *, | |
1201 | struct irq_bypass_producer *); | |
1202 | void kvm_arch_irq_bypass_stop(struct irq_bypass_consumer *); | |
1203 | void kvm_arch_irq_bypass_start(struct irq_bypass_consumer *); | |
f70c20aa FW |
1204 | int kvm_arch_update_irqfd_routing(struct kvm *kvm, unsigned int host_irq, |
1205 | uint32_t guest_irq, bool set); | |
1a02b270 | 1206 | #endif /* CONFIG_HAVE_KVM_IRQ_BYPASS */ |
35181e86 | 1207 | |
3491caf2 CB |
1208 | #ifdef CONFIG_HAVE_KVM_INVALID_WAKEUPS |
1209 | /* If we wakeup during the poll time, was it a sucessful poll? */ | |
1210 | static inline bool vcpu_valid_wakeup(struct kvm_vcpu *vcpu) | |
1211 | { | |
1212 | return vcpu->valid_wakeup; | |
1213 | } | |
1214 | ||
1215 | #else | |
1216 | static inline bool vcpu_valid_wakeup(struct kvm_vcpu *vcpu) | |
1217 | { | |
1218 | return true; | |
1219 | } | |
1220 | #endif /* CONFIG_HAVE_KVM_INVALID_WAKEUPS */ | |
1221 | ||
bfd99ff5 | 1222 | #endif |