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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> |
e8edc6e0 | 27 | #include <asm/signal.h> |
6aa8b732 | 28 | |
6aa8b732 | 29 | #include <linux/kvm.h> |
102d8325 | 30 | #include <linux/kvm_para.h> |
6aa8b732 | 31 | |
edf88417 | 32 | #include <linux/kvm_types.h> |
d77a39d9 | 33 | |
edf88417 | 34 | #include <asm/kvm_host.h> |
d657a98e | 35 | |
67b29204 XG |
36 | /* |
37 | * The bit 16 ~ bit 31 of kvm_memory_region::flags are internally used | |
38 | * in kvm, other bits are visible for userspace which are defined in | |
39 | * include/linux/kvm_h. | |
40 | */ | |
41 | #define KVM_MEMSLOT_INVALID (1UL << 16) | |
1050dcda | 42 | #define KVM_MEMSLOT_INCOHERENT (1UL << 17) |
67b29204 | 43 | |
87da7e66 XG |
44 | /* Two fragments for cross MMIO pages. */ |
45 | #define KVM_MAX_MMIO_FRAGMENTS 2 | |
f78146b0 | 46 | |
f481b069 PB |
47 | #ifndef KVM_ADDRESS_SPACE_NUM |
48 | #define KVM_ADDRESS_SPACE_NUM 1 | |
49 | #endif | |
50 | ||
9c5b1172 XG |
51 | /* |
52 | * For the normal pfn, the highest 12 bits should be zero, | |
81c52c56 XG |
53 | * so we can mask bit 62 ~ bit 52 to indicate the error pfn, |
54 | * mask bit 63 to indicate the noslot pfn. | |
9c5b1172 | 55 | */ |
81c52c56 XG |
56 | #define KVM_PFN_ERR_MASK (0x7ffULL << 52) |
57 | #define KVM_PFN_ERR_NOSLOT_MASK (0xfffULL << 52) | |
58 | #define KVM_PFN_NOSLOT (0x1ULL << 63) | |
9c5b1172 XG |
59 | |
60 | #define KVM_PFN_ERR_FAULT (KVM_PFN_ERR_MASK) | |
61 | #define KVM_PFN_ERR_HWPOISON (KVM_PFN_ERR_MASK + 1) | |
81c52c56 | 62 | #define KVM_PFN_ERR_RO_FAULT (KVM_PFN_ERR_MASK + 2) |
6c8ee57b | 63 | |
81c52c56 XG |
64 | /* |
65 | * error pfns indicate that the gfn is in slot but faild to | |
66 | * translate it to pfn on host. | |
67 | */ | |
9c5b1172 | 68 | static inline bool is_error_pfn(pfn_t pfn) |
83f09228 | 69 | { |
9c5b1172 | 70 | return !!(pfn & KVM_PFN_ERR_MASK); |
83f09228 XG |
71 | } |
72 | ||
81c52c56 XG |
73 | /* |
74 | * error_noslot pfns indicate that the gfn can not be | |
75 | * translated to pfn - it is not in slot or failed to | |
76 | * translate it to pfn. | |
77 | */ | |
78 | static inline bool is_error_noslot_pfn(pfn_t pfn) | |
83f09228 | 79 | { |
81c52c56 | 80 | return !!(pfn & KVM_PFN_ERR_NOSLOT_MASK); |
83f09228 XG |
81 | } |
82 | ||
81c52c56 XG |
83 | /* noslot pfn indicates that the gfn is not in slot. */ |
84 | static inline bool is_noslot_pfn(pfn_t pfn) | |
83f09228 | 85 | { |
81c52c56 | 86 | return pfn == KVM_PFN_NOSLOT; |
83f09228 XG |
87 | } |
88 | ||
bf640876 DD |
89 | /* |
90 | * architectures with KVM_HVA_ERR_BAD other than PAGE_OFFSET (e.g. s390) | |
91 | * provide own defines and kvm_is_error_hva | |
92 | */ | |
93 | #ifndef KVM_HVA_ERR_BAD | |
94 | ||
7068d097 XG |
95 | #define KVM_HVA_ERR_BAD (PAGE_OFFSET) |
96 | #define KVM_HVA_ERR_RO_BAD (PAGE_OFFSET + PAGE_SIZE) | |
ca3a490c XG |
97 | |
98 | static inline bool kvm_is_error_hva(unsigned long addr) | |
99 | { | |
7068d097 | 100 | return addr >= PAGE_OFFSET; |
ca3a490c XG |
101 | } |
102 | ||
bf640876 DD |
103 | #endif |
104 | ||
6cede2e6 XG |
105 | #define KVM_ERR_PTR_BAD_PAGE (ERR_PTR(-ENOENT)) |
106 | ||
9c5b1172 | 107 | static inline bool is_error_page(struct page *page) |
6cede2e6 XG |
108 | { |
109 | return IS_ERR(page); | |
110 | } | |
111 | ||
d9e368d6 AK |
112 | /* |
113 | * vcpu->requests bit members | |
114 | */ | |
3176bc3e | 115 | #define KVM_REQ_TLB_FLUSH 0 |
2f52d58c | 116 | #define KVM_REQ_MIGRATE_TIMER 1 |
b209749f | 117 | #define KVM_REQ_REPORT_TPR_ACCESS 2 |
2e53d63a | 118 | #define KVM_REQ_MMU_RELOAD 3 |
71c4dfaf | 119 | #define KVM_REQ_TRIPLE_FAULT 4 |
06e05645 | 120 | #define KVM_REQ_PENDING_TIMER 5 |
d7690175 | 121 | #define KVM_REQ_UNHALT 6 |
4731d4c7 | 122 | #define KVM_REQ_MMU_SYNC 7 |
34c238a1 | 123 | #define KVM_REQ_CLOCK_UPDATE 8 |
32f88400 | 124 | #define KVM_REQ_KICK 9 |
02daab21 | 125 | #define KVM_REQ_DEACTIVATE_FPU 10 |
3842d135 | 126 | #define KVM_REQ_EVENT 11 |
af585b92 | 127 | #define KVM_REQ_APF_HALT 12 |
c9aaa895 | 128 | #define KVM_REQ_STEAL_UPDATE 13 |
7460fb4a | 129 | #define KVM_REQ_NMI 14 |
730dca42 JK |
130 | #define KVM_REQ_PMU 15 |
131 | #define KVM_REQ_PMI 16 | |
132 | #define KVM_REQ_WATCHDOG 17 | |
133 | #define KVM_REQ_MASTERCLOCK_UPDATE 18 | |
134 | #define KVM_REQ_MCLOCK_INPROGRESS 19 | |
135 | #define KVM_REQ_EPR_EXIT 20 | |
136 | #define KVM_REQ_SCAN_IOAPIC 21 | |
0061d53d | 137 | #define KVM_REQ_GLOBAL_CLOCK_UPDATE 22 |
8ad35755 DH |
138 | #define KVM_REQ_ENABLE_IBS 23 |
139 | #define KVM_REQ_DISABLE_IBS 24 | |
4256f43f | 140 | #define KVM_REQ_APIC_PAGE_RELOAD 25 |
64d60670 | 141 | #define KVM_REQ_SMI 26 |
2ce79189 | 142 | #define KVM_REQ_HV_CRASH 27 |
7543a635 | 143 | #define KVM_REQ_IOAPIC_EOI_EXIT 28 |
e516cebb | 144 | #define KVM_REQ_HV_RESET 29 |
6aa8b732 | 145 | |
7a84428a AW |
146 | #define KVM_USERSPACE_IRQ_SOURCE_ID 0 |
147 | #define KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID 1 | |
5550af4d | 148 | |
c16f862d | 149 | extern struct kmem_cache *kvm_vcpu_cache; |
6aa8b732 | 150 | |
2f303b74 | 151 | extern spinlock_t kvm_lock; |
fc1b7492 GL |
152 | extern struct list_head vm_list; |
153 | ||
743eeb0b SL |
154 | struct kvm_io_range { |
155 | gpa_t addr; | |
156 | int len; | |
157 | struct kvm_io_device *dev; | |
158 | }; | |
159 | ||
786a9f88 | 160 | #define NR_IOBUS_DEVS 1000 |
a1300716 | 161 | |
2eeb2e94 | 162 | struct kvm_io_bus { |
6ea34c9b AK |
163 | int dev_count; |
164 | int ioeventfd_count; | |
a1300716 | 165 | struct kvm_io_range range[]; |
2eeb2e94 GH |
166 | }; |
167 | ||
e93f8a0f MT |
168 | enum kvm_bus { |
169 | KVM_MMIO_BUS, | |
170 | KVM_PIO_BUS, | |
060f0ce6 | 171 | KVM_VIRTIO_CCW_NOTIFY_BUS, |
68c3b4d1 | 172 | KVM_FAST_MMIO_BUS, |
e93f8a0f MT |
173 | KVM_NR_BUSES |
174 | }; | |
175 | ||
e32edf4f | 176 | int kvm_io_bus_write(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr, |
e93f8a0f | 177 | int len, const void *val); |
e32edf4f NN |
178 | int kvm_io_bus_write_cookie(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, |
179 | gpa_t addr, int len, const void *val, long cookie); | |
180 | int kvm_io_bus_read(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr, | |
181 | int len, void *val); | |
743eeb0b SL |
182 | int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, |
183 | int len, struct kvm_io_device *dev); | |
e93f8a0f MT |
184 | int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx, |
185 | struct kvm_io_device *dev); | |
2eeb2e94 | 186 | |
af585b92 GN |
187 | #ifdef CONFIG_KVM_ASYNC_PF |
188 | struct kvm_async_pf { | |
189 | struct work_struct work; | |
190 | struct list_head link; | |
191 | struct list_head queue; | |
192 | struct kvm_vcpu *vcpu; | |
193 | struct mm_struct *mm; | |
194 | gva_t gva; | |
195 | unsigned long addr; | |
196 | struct kvm_arch_async_pf arch; | |
f2e10669 | 197 | bool wakeup_all; |
af585b92 GN |
198 | }; |
199 | ||
200 | void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu); | |
201 | void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu); | |
e0ead41a | 202 | int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, unsigned long hva, |
af585b92 | 203 | struct kvm_arch_async_pf *arch); |
344d9588 | 204 | int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu); |
af585b92 GN |
205 | #endif |
206 | ||
6b7e2d09 XG |
207 | enum { |
208 | OUTSIDE_GUEST_MODE, | |
209 | IN_GUEST_MODE, | |
c142786c AK |
210 | EXITING_GUEST_MODE, |
211 | READING_SHADOW_PAGE_TABLES, | |
6b7e2d09 XG |
212 | }; |
213 | ||
f78146b0 AK |
214 | /* |
215 | * Sometimes a large or cross-page mmio needs to be broken up into separate | |
216 | * exits for userspace servicing. | |
217 | */ | |
218 | struct kvm_mmio_fragment { | |
219 | gpa_t gpa; | |
220 | void *data; | |
221 | unsigned len; | |
222 | }; | |
223 | ||
d17fbbf7 ZX |
224 | struct kvm_vcpu { |
225 | struct kvm *kvm; | |
31bb117e | 226 | #ifdef CONFIG_PREEMPT_NOTIFIERS |
d17fbbf7 | 227 | struct preempt_notifier preempt_notifier; |
31bb117e | 228 | #endif |
6b7e2d09 | 229 | int cpu; |
d17fbbf7 | 230 | int vcpu_id; |
6b7e2d09 XG |
231 | int srcu_idx; |
232 | int mode; | |
d17fbbf7 | 233 | unsigned long requests; |
d0bfb940 | 234 | unsigned long guest_debug; |
6b7e2d09 XG |
235 | |
236 | struct mutex mutex; | |
237 | struct kvm_run *run; | |
f656ce01 | 238 | |
d17fbbf7 | 239 | int fpu_active; |
2acf923e | 240 | int guest_fpu_loaded, guest_xcr0_loaded; |
653f52c3 | 241 | unsigned char fpu_counter; |
d17fbbf7 | 242 | wait_queue_head_t wq; |
34bb10b7 | 243 | struct pid *pid; |
d17fbbf7 ZX |
244 | int sigset_active; |
245 | sigset_t sigset; | |
246 | struct kvm_vcpu_stat stat; | |
19020f8a | 247 | unsigned int halt_poll_ns; |
d17fbbf7 | 248 | |
34c16eec | 249 | #ifdef CONFIG_HAS_IOMEM |
d17fbbf7 ZX |
250 | int mmio_needed; |
251 | int mmio_read_completed; | |
252 | int mmio_is_write; | |
f78146b0 AK |
253 | int mmio_cur_fragment; |
254 | int mmio_nr_fragments; | |
255 | struct kvm_mmio_fragment mmio_fragments[KVM_MAX_MMIO_FRAGMENTS]; | |
34c16eec | 256 | #endif |
1165f5fe | 257 | |
af585b92 GN |
258 | #ifdef CONFIG_KVM_ASYNC_PF |
259 | struct { | |
260 | u32 queued; | |
261 | struct list_head queue; | |
262 | struct list_head done; | |
263 | spinlock_t lock; | |
264 | } async_pf; | |
265 | #endif | |
266 | ||
4c088493 R |
267 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
268 | /* | |
269 | * Cpu relax intercept or pause loop exit optimization | |
270 | * in_spin_loop: set when a vcpu does a pause loop exit | |
271 | * or cpu relax intercepted. | |
272 | * dy_eligible: indicates whether vcpu is eligible for directed yield. | |
273 | */ | |
274 | struct { | |
275 | bool in_spin_loop; | |
276 | bool dy_eligible; | |
277 | } spin_loop; | |
278 | #endif | |
3a08a8f9 | 279 | bool preempted; |
d657a98e ZX |
280 | struct kvm_vcpu_arch arch; |
281 | }; | |
282 | ||
6b7e2d09 XG |
283 | static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu) |
284 | { | |
285 | return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE); | |
286 | } | |
287 | ||
660c22c4 TY |
288 | /* |
289 | * Some of the bitops functions do not support too long bitmaps. | |
290 | * This number must be determined not to exceed such limits. | |
291 | */ | |
292 | #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1) | |
293 | ||
6aa8b732 AK |
294 | struct kvm_memory_slot { |
295 | gfn_t base_gfn; | |
296 | unsigned long npages; | |
6aa8b732 | 297 | unsigned long *dirty_bitmap; |
db3fe4eb | 298 | struct kvm_arch_memory_slot arch; |
8a7ae055 | 299 | unsigned long userspace_addr; |
6104f472 | 300 | u32 flags; |
1e702d9a | 301 | short id; |
6aa8b732 AK |
302 | }; |
303 | ||
87bf6e7d TY |
304 | static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot) |
305 | { | |
306 | return ALIGN(memslot->npages, BITS_PER_LONG) / 8; | |
307 | } | |
308 | ||
84223598 CH |
309 | struct kvm_s390_adapter_int { |
310 | u64 ind_addr; | |
311 | u64 summary_addr; | |
312 | u64 ind_offset; | |
313 | u32 summary_offset; | |
314 | u32 adapter_id; | |
315 | }; | |
316 | ||
399ec807 AK |
317 | struct kvm_kernel_irq_routing_entry { |
318 | u32 gsi; | |
5116d8f6 | 319 | u32 type; |
4925663a | 320 | int (*set)(struct kvm_kernel_irq_routing_entry *e, |
aa2fbe6d YZ |
321 | struct kvm *kvm, int irq_source_id, int level, |
322 | bool line_status); | |
399ec807 AK |
323 | union { |
324 | struct { | |
325 | unsigned irqchip; | |
326 | unsigned pin; | |
327 | } irqchip; | |
79950e10 | 328 | struct msi_msg msi; |
84223598 | 329 | struct kvm_s390_adapter_int adapter; |
399ec807 | 330 | }; |
46e624b9 GN |
331 | struct hlist_node link; |
332 | }; | |
333 | ||
b053b2ae SR |
334 | #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING |
335 | struct kvm_irq_routing_table { | |
336 | int chip[KVM_NR_IRQCHIPS][KVM_IRQCHIP_NUM_PINS]; | |
337 | u32 nr_rt_entries; | |
338 | /* | |
339 | * Array indexed by gsi. Each entry contains list of irq chips | |
340 | * the gsi is connected to. | |
341 | */ | |
342 | struct hlist_head map[0]; | |
343 | }; | |
344 | #endif | |
345 | ||
0743247f AW |
346 | #ifndef KVM_PRIVATE_MEM_SLOTS |
347 | #define KVM_PRIVATE_MEM_SLOTS 0 | |
348 | #endif | |
349 | ||
93a5cef0 | 350 | #ifndef KVM_MEM_SLOTS_NUM |
bbacc0c1 | 351 | #define KVM_MEM_SLOTS_NUM (KVM_USER_MEM_SLOTS + KVM_PRIVATE_MEM_SLOTS) |
93a5cef0 XG |
352 | #endif |
353 | ||
f481b069 PB |
354 | #ifndef __KVM_VCPU_MULTIPLE_ADDRESS_SPACE |
355 | static inline int kvm_arch_vcpu_memslots_id(struct kvm_vcpu *vcpu) | |
356 | { | |
357 | return 0; | |
358 | } | |
359 | #endif | |
360 | ||
bf3e05bc XG |
361 | /* |
362 | * Note: | |
363 | * memslots are not sorted by id anymore, please use id_to_memslot() | |
364 | * to get the memslot by its id. | |
365 | */ | |
46a26bf5 | 366 | struct kvm_memslots { |
49c7754c | 367 | u64 generation; |
93a5cef0 | 368 | struct kvm_memory_slot memslots[KVM_MEM_SLOTS_NUM]; |
f85e2cb5 | 369 | /* The mapping table from slot id to the index in memslots[]. */ |
1e702d9a | 370 | short id_to_index[KVM_MEM_SLOTS_NUM]; |
d4ae84a0 | 371 | atomic_t lru_slot; |
9c1a5d38 | 372 | int used_slots; |
46a26bf5 MT |
373 | }; |
374 | ||
6aa8b732 | 375 | struct kvm { |
aaee2c94 | 376 | spinlock_t mmu_lock; |
79fac95e | 377 | struct mutex slots_lock; |
6d4e4c4f | 378 | struct mm_struct *mm; /* userspace tied to this vm */ |
f481b069 | 379 | struct kvm_memslots *memslots[KVM_ADDRESS_SPACE_NUM]; |
bc6678a3 | 380 | struct srcu_struct srcu; |
719d93cd | 381 | struct srcu_struct irq_srcu; |
fb3f0f51 | 382 | struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; |
73880c80 | 383 | atomic_t online_vcpus; |
217ece61 | 384 | int last_boosted_vcpu; |
133de902 | 385 | struct list_head vm_list; |
60eead79 | 386 | struct mutex lock; |
e93f8a0f | 387 | struct kvm_io_bus *buses[KVM_NR_BUSES]; |
721eecbf GH |
388 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
389 | struct { | |
390 | spinlock_t lock; | |
391 | struct list_head items; | |
7a84428a AW |
392 | struct list_head resampler_list; |
393 | struct mutex resampler_lock; | |
721eecbf | 394 | } irqfds; |
d34e6b17 | 395 | struct list_head ioeventfds; |
721eecbf | 396 | #endif |
ba1389b7 | 397 | struct kvm_vm_stat stat; |
d69fb81f | 398 | struct kvm_arch arch; |
d39f13b0 | 399 | atomic_t users_count; |
5f94c174 | 400 | #ifdef KVM_COALESCED_MMIO_PAGE_OFFSET |
5f94c174 | 401 | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; |
2b3c246a SL |
402 | spinlock_t ring_lock; |
403 | struct list_head coalesced_zones; | |
5f94c174 | 404 | #endif |
e930bffe | 405 | |
60eead79 | 406 | struct mutex irq_lock; |
75858a84 | 407 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 | 408 | /* |
9957c86d | 409 | * Update side is protected by irq_lock. |
bd2b53b2 | 410 | */ |
4b6a2872 | 411 | struct kvm_irq_routing_table __rcu *irq_routing; |
c77dcacb PB |
412 | #endif |
413 | #ifdef CONFIG_HAVE_KVM_IRQFD | |
136bdfee | 414 | struct hlist_head irq_ack_notifier_list; |
75858a84 AK |
415 | #endif |
416 | ||
36c1ed82 | 417 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
e930bffe AA |
418 | struct mmu_notifier mmu_notifier; |
419 | unsigned long mmu_notifier_seq; | |
420 | long mmu_notifier_count; | |
421 | #endif | |
a086f6a1 | 422 | long tlbs_dirty; |
07f0a7bd | 423 | struct list_head devices; |
6aa8b732 AK |
424 | }; |
425 | ||
a737f256 CD |
426 | #define kvm_err(fmt, ...) \ |
427 | pr_err("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
428 | #define kvm_info(fmt, ...) \ | |
429 | pr_info("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
430 | #define kvm_debug(fmt, ...) \ | |
431 | pr_debug("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
432 | #define kvm_pr_unimpl(fmt, ...) \ | |
433 | pr_err_ratelimited("kvm [%i]: " fmt, \ | |
434 | task_tgid_nr(current), ## __VA_ARGS__) | |
f0242478 | 435 | |
a737f256 CD |
436 | /* The guest did something we don't support. */ |
437 | #define vcpu_unimpl(vcpu, fmt, ...) \ | |
438 | kvm_pr_unimpl("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__) | |
6aa8b732 | 439 | |
ee86dbc6 AS |
440 | #define vcpu_debug(vcpu, fmt, ...) \ |
441 | kvm_debug("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__) | |
442 | ||
988a2cae GN |
443 | static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i) |
444 | { | |
dd489240 PB |
445 | /* Pairs with smp_wmb() in kvm_vm_ioctl_create_vcpu, in case |
446 | * the caller has read kvm->online_vcpus before (as is the case | |
447 | * for kvm_for_each_vcpu, for example). | |
448 | */ | |
988a2cae GN |
449 | smp_rmb(); |
450 | return kvm->vcpus[i]; | |
451 | } | |
452 | ||
453 | #define kvm_for_each_vcpu(idx, vcpup, kvm) \ | |
b42fc3cb JM |
454 | for (idx = 0; \ |
455 | idx < atomic_read(&kvm->online_vcpus) && \ | |
456 | (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \ | |
457 | idx++) | |
988a2cae | 458 | |
be6ba0f0 XG |
459 | #define kvm_for_each_memslot(memslot, slots) \ |
460 | for (memslot = &slots->memslots[0]; \ | |
bf3e05bc XG |
461 | memslot < slots->memslots + KVM_MEM_SLOTS_NUM && memslot->npages;\ |
462 | memslot++) | |
be6ba0f0 | 463 | |
fb3f0f51 RR |
464 | int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id); |
465 | void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); | |
466 | ||
9fc77441 | 467 | int __must_check vcpu_load(struct kvm_vcpu *vcpu); |
313a3dc7 CO |
468 | void vcpu_put(struct kvm_vcpu *vcpu); |
469 | ||
6ef768fa PB |
470 | #ifdef __KVM_HAVE_IOAPIC |
471 | void kvm_vcpu_request_scan_ioapic(struct kvm *kvm); | |
b053b2ae | 472 | void kvm_arch_irq_routing_update(struct kvm *kvm); |
6ef768fa PB |
473 | #else |
474 | static inline void kvm_vcpu_request_scan_ioapic(struct kvm *kvm) | |
475 | { | |
476 | } | |
b053b2ae SR |
477 | static inline void kvm_arch_irq_routing_update(struct kvm *kvm) |
478 | { | |
479 | } | |
6ef768fa PB |
480 | #endif |
481 | ||
297e2105 | 482 | #ifdef CONFIG_HAVE_KVM_IRQFD |
a0f155e9 CH |
483 | int kvm_irqfd_init(void); |
484 | void kvm_irqfd_exit(void); | |
485 | #else | |
486 | static inline int kvm_irqfd_init(void) | |
487 | { | |
488 | return 0; | |
489 | } | |
490 | ||
491 | static inline void kvm_irqfd_exit(void) | |
492 | { | |
493 | } | |
494 | #endif | |
0ee75bea | 495 | int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, |
c16f862d | 496 | struct module *module); |
cb498ea2 | 497 | void kvm_exit(void); |
6aa8b732 | 498 | |
d39f13b0 IE |
499 | void kvm_get_kvm(struct kvm *kvm); |
500 | void kvm_put_kvm(struct kvm *kvm); | |
501 | ||
f481b069 | 502 | static inline struct kvm_memslots *__kvm_memslots(struct kvm *kvm, int as_id) |
90d83dc3 | 503 | { |
f481b069 | 504 | return rcu_dereference_check(kvm->memslots[as_id], |
90d83dc3 LJ |
505 | srcu_read_lock_held(&kvm->srcu) |
506 | || lockdep_is_held(&kvm->slots_lock)); | |
507 | } | |
508 | ||
f481b069 PB |
509 | static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm) |
510 | { | |
511 | return __kvm_memslots(kvm, 0); | |
512 | } | |
513 | ||
8e73485c PB |
514 | static inline struct kvm_memslots *kvm_vcpu_memslots(struct kvm_vcpu *vcpu) |
515 | { | |
f481b069 PB |
516 | int as_id = kvm_arch_vcpu_memslots_id(vcpu); |
517 | ||
518 | return __kvm_memslots(vcpu->kvm, as_id); | |
8e73485c PB |
519 | } |
520 | ||
28a37544 XG |
521 | static inline struct kvm_memory_slot * |
522 | id_to_memslot(struct kvm_memslots *slots, int id) | |
523 | { | |
f85e2cb5 XG |
524 | int index = slots->id_to_index[id]; |
525 | struct kvm_memory_slot *slot; | |
bf3e05bc | 526 | |
f85e2cb5 | 527 | slot = &slots->memslots[index]; |
bf3e05bc | 528 | |
f85e2cb5 XG |
529 | WARN_ON(slot->id != id); |
530 | return slot; | |
28a37544 XG |
531 | } |
532 | ||
74d0727c TY |
533 | /* |
534 | * KVM_SET_USER_MEMORY_REGION ioctl allows the following operations: | |
535 | * - create a new memory slot | |
536 | * - delete an existing memory slot | |
537 | * - modify an existing memory slot | |
538 | * -- move it in the guest physical memory space | |
539 | * -- just change its flags | |
540 | * | |
541 | * Since flags can be changed by some of these operations, the following | |
542 | * differentiation is the best we can do for __kvm_set_memory_region(): | |
543 | */ | |
544 | enum kvm_mr_change { | |
545 | KVM_MR_CREATE, | |
546 | KVM_MR_DELETE, | |
547 | KVM_MR_MOVE, | |
548 | KVM_MR_FLAGS_ONLY, | |
549 | }; | |
550 | ||
210c7c4d | 551 | int kvm_set_memory_region(struct kvm *kvm, |
09170a49 | 552 | const struct kvm_userspace_memory_region *mem); |
f78e0e2e | 553 | int __kvm_set_memory_region(struct kvm *kvm, |
09170a49 | 554 | const struct kvm_userspace_memory_region *mem); |
5587027c | 555 | void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free, |
db3fe4eb | 556 | struct kvm_memory_slot *dont); |
5587027c AK |
557 | int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, |
558 | unsigned long npages); | |
15f46015 | 559 | void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots); |
f7784b8e MT |
560 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
561 | struct kvm_memory_slot *memslot, | |
09170a49 | 562 | const struct kvm_userspace_memory_region *mem, |
7b6195a9 | 563 | enum kvm_mr_change change); |
f7784b8e | 564 | void kvm_arch_commit_memory_region(struct kvm *kvm, |
09170a49 | 565 | const struct kvm_userspace_memory_region *mem, |
8482644a | 566 | const struct kvm_memory_slot *old, |
f36f3f28 | 567 | const struct kvm_memory_slot *new, |
8482644a | 568 | enum kvm_mr_change change); |
db3fe4eb | 569 | bool kvm_largepages_enabled(void); |
54dee993 | 570 | void kvm_disable_largepages(void); |
2df72e9b MT |
571 | /* flush all memory translations */ |
572 | void kvm_arch_flush_shadow_all(struct kvm *kvm); | |
573 | /* flush memory translations pointing to 'slot' */ | |
574 | void kvm_arch_flush_shadow_memslot(struct kvm *kvm, | |
575 | struct kvm_memory_slot *slot); | |
a983fb23 | 576 | |
d9ef13c2 PB |
577 | int gfn_to_page_many_atomic(struct kvm_memory_slot *slot, gfn_t gfn, |
578 | struct page **pages, int nr_pages); | |
48987781 | 579 | |
954bbbc2 | 580 | struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); |
05da4558 | 581 | unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn); |
ba6a3541 | 582 | unsigned long gfn_to_hva_prot(struct kvm *kvm, gfn_t gfn, bool *writable); |
4d8b81ab | 583 | unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
64d83126 CD |
584 | unsigned long gfn_to_hva_memslot_prot(struct kvm_memory_slot *slot, gfn_t gfn, |
585 | bool *writable); | |
b4231d61 IE |
586 | void kvm_release_page_clean(struct page *page); |
587 | void kvm_release_page_dirty(struct page *page); | |
35149e21 AL |
588 | void kvm_set_page_accessed(struct page *page); |
589 | ||
365fb3fd | 590 | pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn); |
35149e21 | 591 | pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn); |
612819c3 MT |
592 | pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault, |
593 | bool *writable); | |
d5661048 | 594 | pfn_t gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
037d92dc | 595 | pfn_t gfn_to_pfn_memslot_atomic(struct kvm_memory_slot *slot, gfn_t gfn); |
3520469d PB |
596 | pfn_t __gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn, bool atomic, |
597 | bool *async, bool write_fault, bool *writable); | |
037d92dc | 598 | |
35149e21 AL |
599 | void kvm_release_pfn_clean(pfn_t pfn); |
600 | void kvm_set_pfn_dirty(pfn_t pfn); | |
601 | void kvm_set_pfn_accessed(pfn_t pfn); | |
602 | void kvm_get_pfn(pfn_t pfn); | |
603 | ||
195aefde IE |
604 | int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, |
605 | int len); | |
7ec54588 MT |
606 | int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data, |
607 | unsigned long len); | |
195aefde | 608 | int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); |
e03b644f GN |
609 | int kvm_read_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
610 | void *data, unsigned long len); | |
195aefde IE |
611 | int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, |
612 | int offset, int len); | |
613 | int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, | |
614 | unsigned long len); | |
49c7754c GN |
615 | int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
616 | void *data, unsigned long len); | |
617 | int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc, | |
8f964525 | 618 | gpa_t gpa, unsigned long len); |
195aefde IE |
619 | int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); |
620 | int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); | |
6aa8b732 | 621 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); |
e0d62c7f | 622 | int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); |
8f0b1ab6 | 623 | unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn); |
6aa8b732 AK |
624 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); |
625 | ||
8e73485c PB |
626 | struct kvm_memslots *kvm_vcpu_memslots(struct kvm_vcpu *vcpu); |
627 | struct kvm_memory_slot *kvm_vcpu_gfn_to_memslot(struct kvm_vcpu *vcpu, gfn_t gfn); | |
628 | pfn_t kvm_vcpu_gfn_to_pfn_atomic(struct kvm_vcpu *vcpu, gfn_t gfn); | |
629 | pfn_t kvm_vcpu_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn); | |
630 | struct page *kvm_vcpu_gfn_to_page(struct kvm_vcpu *vcpu, gfn_t gfn); | |
631 | unsigned long kvm_vcpu_gfn_to_hva(struct kvm_vcpu *vcpu, gfn_t gfn); | |
632 | unsigned long kvm_vcpu_gfn_to_hva_prot(struct kvm_vcpu *vcpu, gfn_t gfn, bool *writable); | |
633 | int kvm_vcpu_read_guest_page(struct kvm_vcpu *vcpu, gfn_t gfn, void *data, int offset, | |
634 | int len); | |
635 | int kvm_vcpu_read_guest_atomic(struct kvm_vcpu *vcpu, gpa_t gpa, void *data, | |
636 | unsigned long len); | |
637 | int kvm_vcpu_read_guest(struct kvm_vcpu *vcpu, gpa_t gpa, void *data, | |
638 | unsigned long len); | |
639 | int kvm_vcpu_write_guest_page(struct kvm_vcpu *vcpu, gfn_t gfn, const void *data, | |
640 | int offset, int len); | |
641 | int kvm_vcpu_write_guest(struct kvm_vcpu *vcpu, gpa_t gpa, const void *data, | |
642 | unsigned long len); | |
643 | void kvm_vcpu_mark_page_dirty(struct kvm_vcpu *vcpu, gfn_t gfn); | |
644 | ||
8776e519 | 645 | void kvm_vcpu_block(struct kvm_vcpu *vcpu); |
b6d33834 | 646 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
fa93384f | 647 | int kvm_vcpu_yield_to(struct kvm_vcpu *target); |
d255f4f2 | 648 | void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu); |
7702fd1f AK |
649 | void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); |
650 | void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); | |
a4ee1ca4 | 651 | |
d9e368d6 | 652 | void kvm_flush_remote_tlbs(struct kvm *kvm); |
2e53d63a | 653 | void kvm_reload_remote_mmus(struct kvm *kvm); |
d828199e | 654 | void kvm_make_mclock_inprogress_request(struct kvm *kvm); |
3d81bc7e | 655 | void kvm_make_scan_ioapic_request(struct kvm *kvm); |
445b8236 | 656 | bool kvm_make_all_cpus_request(struct kvm *kvm, unsigned int req); |
6aa8b732 | 657 | |
043405e1 CO |
658 | long kvm_arch_dev_ioctl(struct file *filp, |
659 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 CO |
660 | long kvm_arch_vcpu_ioctl(struct file *filp, |
661 | unsigned int ioctl, unsigned long arg); | |
5b1c1493 | 662 | int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf); |
018d00d2 | 663 | |
784aa3d7 | 664 | int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext); |
018d00d2 | 665 | |
5bb064dc ZX |
666 | int kvm_get_dirty_log(struct kvm *kvm, |
667 | struct kvm_dirty_log *log, int *is_dirty); | |
ba0513b5 MS |
668 | |
669 | int kvm_get_dirty_log_protect(struct kvm *kvm, | |
670 | struct kvm_dirty_log *log, bool *is_dirty); | |
671 | ||
3b0f1d01 | 672 | void kvm_arch_mmu_enable_log_dirty_pt_masked(struct kvm *kvm, |
ba0513b5 MS |
673 | struct kvm_memory_slot *slot, |
674 | gfn_t gfn_offset, | |
675 | unsigned long mask); | |
676 | ||
5bb064dc ZX |
677 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, |
678 | struct kvm_dirty_log *log); | |
679 | ||
aa2fbe6d YZ |
680 | int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_level, |
681 | bool line_status); | |
1fe779f8 CO |
682 | long kvm_arch_vm_ioctl(struct file *filp, |
683 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 | 684 | |
d0752060 HB |
685 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); |
686 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); | |
687 | ||
8b006791 ZX |
688 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, |
689 | struct kvm_translation *tr); | |
690 | ||
b6c7a5dc HB |
691 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); |
692 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); | |
693 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
694 | struct kvm_sregs *sregs); | |
695 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
696 | struct kvm_sregs *sregs); | |
62d9f0db MT |
697 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
698 | struct kvm_mp_state *mp_state); | |
699 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
700 | struct kvm_mp_state *mp_state); | |
d0bfb940 JK |
701 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
702 | struct kvm_guest_debug *dbg); | |
b6c7a5dc HB |
703 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); |
704 | ||
f8c16bba ZX |
705 | int kvm_arch_init(void *opaque); |
706 | void kvm_arch_exit(void); | |
043405e1 | 707 | |
e9b11c17 ZX |
708 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); |
709 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu); | |
710 | ||
e790d9ef RK |
711 | void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu); |
712 | ||
e9b11c17 ZX |
713 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu); |
714 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
715 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); | |
716 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); | |
26e5215f | 717 | int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu); |
31928aa5 | 718 | void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu); |
d40ccc62 | 719 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu); |
e9b11c17 | 720 | |
13a34e06 RK |
721 | int kvm_arch_hardware_enable(void); |
722 | void kvm_arch_hardware_disable(void); | |
e9b11c17 ZX |
723 | int kvm_arch_hardware_setup(void); |
724 | void kvm_arch_hardware_unsetup(void); | |
725 | void kvm_arch_check_processor_compat(void *rtn); | |
1d737c8a | 726 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu); |
b6d33834 | 727 | int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu); |
e9b11c17 | 728 | |
c1a7b32a | 729 | void *kvm_kvzalloc(unsigned long size); |
c1a7b32a | 730 | |
d89f5eff JK |
731 | #ifndef __KVM_HAVE_ARCH_VM_ALLOC |
732 | static inline struct kvm *kvm_arch_alloc_vm(void) | |
733 | { | |
734 | return kzalloc(sizeof(struct kvm), GFP_KERNEL); | |
735 | } | |
736 | ||
737 | static inline void kvm_arch_free_vm(struct kvm *kvm) | |
738 | { | |
739 | kfree(kvm); | |
740 | } | |
741 | #endif | |
742 | ||
e0f0bbc5 AW |
743 | #ifdef __KVM_HAVE_ARCH_NONCOHERENT_DMA |
744 | void kvm_arch_register_noncoherent_dma(struct kvm *kvm); | |
745 | void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm); | |
746 | bool kvm_arch_has_noncoherent_dma(struct kvm *kvm); | |
747 | #else | |
748 | static inline void kvm_arch_register_noncoherent_dma(struct kvm *kvm) | |
749 | { | |
750 | } | |
751 | ||
752 | static inline void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm) | |
753 | { | |
754 | } | |
755 | ||
756 | static inline bool kvm_arch_has_noncoherent_dma(struct kvm *kvm) | |
757 | { | |
758 | return false; | |
759 | } | |
760 | #endif | |
5544eb9b PB |
761 | #ifdef __KVM_HAVE_ARCH_ASSIGNED_DEVICE |
762 | void kvm_arch_start_assignment(struct kvm *kvm); | |
763 | void kvm_arch_end_assignment(struct kvm *kvm); | |
764 | bool kvm_arch_has_assigned_device(struct kvm *kvm); | |
765 | #else | |
766 | static inline void kvm_arch_start_assignment(struct kvm *kvm) | |
767 | { | |
768 | } | |
769 | ||
770 | static inline void kvm_arch_end_assignment(struct kvm *kvm) | |
771 | { | |
772 | } | |
773 | ||
774 | static inline bool kvm_arch_has_assigned_device(struct kvm *kvm) | |
775 | { | |
776 | return false; | |
777 | } | |
778 | #endif | |
e0f0bbc5 | 779 | |
b6d33834 CD |
780 | static inline wait_queue_head_t *kvm_arch_vcpu_wq(struct kvm_vcpu *vcpu) |
781 | { | |
2246f8b5 AG |
782 | #ifdef __KVM_HAVE_ARCH_WQP |
783 | return vcpu->arch.wqp; | |
784 | #else | |
b6d33834 | 785 | return &vcpu->wq; |
b6d33834 | 786 | #endif |
2246f8b5 | 787 | } |
b6d33834 | 788 | |
01c94e64 EA |
789 | #ifdef __KVM_HAVE_ARCH_INTC_INITIALIZED |
790 | /* | |
791 | * returns true if the virtual interrupt controller is initialized and | |
792 | * ready to accept virtual IRQ. On some architectures the virtual interrupt | |
793 | * controller is dynamically instantiated and this is not always true. | |
794 | */ | |
795 | bool kvm_arch_intc_initialized(struct kvm *kvm); | |
796 | #else | |
797 | static inline bool kvm_arch_intc_initialized(struct kvm *kvm) | |
798 | { | |
799 | return true; | |
800 | } | |
801 | #endif | |
802 | ||
e08b9637 | 803 | int kvm_arch_init_vm(struct kvm *kvm, unsigned long type); |
d19a9cd2 | 804 | void kvm_arch_destroy_vm(struct kvm *kvm); |
ad8ba2cd | 805 | void kvm_arch_sync_events(struct kvm *kvm); |
e9b11c17 | 806 | |
3d80840d | 807 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu); |
5736199a | 808 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
682c59a3 | 809 | |
bf4bea8e | 810 | bool kvm_is_reserved_pfn(pfn_t pfn); |
c77fb9dc | 811 | |
62c476c7 BAY |
812 | struct kvm_irq_ack_notifier { |
813 | struct hlist_node link; | |
814 | unsigned gsi; | |
815 | void (*irq_acked)(struct kvm_irq_ack_notifier *kian); | |
816 | }; | |
817 | ||
9957c86d PM |
818 | int kvm_irq_map_gsi(struct kvm *kvm, |
819 | struct kvm_kernel_irq_routing_entry *entries, int gsi); | |
820 | int kvm_irq_map_chip_pin(struct kvm *kvm, unsigned irqchip, unsigned pin); | |
8ba918d4 | 821 | |
aa2fbe6d YZ |
822 | int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level, |
823 | bool line_status); | |
01f21880 | 824 | int kvm_set_irq_inatomic(struct kvm *kvm, int irq_source_id, u32 irq, int level); |
bd2b53b2 | 825 | int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm, |
aa2fbe6d | 826 | int irq_source_id, int level, bool line_status); |
c7c9c56c | 827 | bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin); |
44882eed | 828 | void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin); |
3de42dc0 XZ |
829 | void kvm_register_irq_ack_notifier(struct kvm *kvm, |
830 | struct kvm_irq_ack_notifier *kian); | |
fa40a821 MT |
831 | void kvm_unregister_irq_ack_notifier(struct kvm *kvm, |
832 | struct kvm_irq_ack_notifier *kian); | |
5550af4d SY |
833 | int kvm_request_irq_source_id(struct kvm *kvm); |
834 | void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id); | |
62c476c7 | 835 | |
2a5bab10 | 836 | #ifdef CONFIG_KVM_DEVICE_ASSIGNMENT |
3ad26d81 | 837 | int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
32f6daad | 838 | void kvm_iommu_unmap_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
2a5bab10 | 839 | #else |
62c476c7 | 840 | static inline int kvm_iommu_map_pages(struct kvm *kvm, |
d7a79b6c | 841 | struct kvm_memory_slot *slot) |
62c476c7 BAY |
842 | { |
843 | return 0; | |
844 | } | |
845 | ||
32f6daad AW |
846 | static inline void kvm_iommu_unmap_pages(struct kvm *kvm, |
847 | struct kvm_memory_slot *slot) | |
848 | { | |
849 | } | |
2a5bab10 | 850 | #endif |
62c476c7 | 851 | |
0097d12e CB |
852 | /* must be called with irqs disabled */ |
853 | static inline void __kvm_guest_enter(void) | |
c11f11fc | 854 | { |
c11f11fc | 855 | guest_enter(); |
8fa22068 GN |
856 | /* KVM does not hold any references to rcu protected data when it |
857 | * switches CPU into a guest mode. In fact switching to a guest mode | |
81e87e26 | 858 | * is very similar to exiting to userspace from rcu point of view. In |
8fa22068 GN |
859 | * addition CPU may stay in a guest mode for quite a long time (up to |
860 | * one time slice). Lets treat guest mode as quiescent state, just like | |
861 | * we do with user-mode execution. | |
862 | */ | |
126a6a54 RR |
863 | if (!context_tracking_cpu_is_enabled()) |
864 | rcu_virt_note_context_switch(smp_processor_id()); | |
d172fcd3 LV |
865 | } |
866 | ||
0097d12e CB |
867 | /* must be called with irqs disabled */ |
868 | static inline void __kvm_guest_exit(void) | |
869 | { | |
870 | guest_exit(); | |
871 | } | |
872 | ||
873 | static inline void kvm_guest_enter(void) | |
874 | { | |
875 | unsigned long flags; | |
876 | ||
877 | local_irq_save(flags); | |
878 | __kvm_guest_enter(); | |
879 | local_irq_restore(flags); | |
880 | } | |
881 | ||
d172fcd3 LV |
882 | static inline void kvm_guest_exit(void) |
883 | { | |
c11f11fc FW |
884 | unsigned long flags; |
885 | ||
886 | local_irq_save(flags); | |
0097d12e | 887 | __kvm_guest_exit(); |
c11f11fc | 888 | local_irq_restore(flags); |
d172fcd3 LV |
889 | } |
890 | ||
9d4cba7f PM |
891 | /* |
892 | * search_memslots() and __gfn_to_memslot() are here because they are | |
893 | * used in non-modular code in arch/powerpc/kvm/book3s_hv_rm_mmu.c. | |
894 | * gfn_to_memslot() itself isn't here as an inline because that would | |
895 | * bloat other code too much. | |
896 | */ | |
897 | static inline struct kvm_memory_slot * | |
898 | search_memslots(struct kvm_memslots *slots, gfn_t gfn) | |
899 | { | |
9c1a5d38 | 900 | int start = 0, end = slots->used_slots; |
d4ae84a0 | 901 | int slot = atomic_read(&slots->lru_slot); |
9c1a5d38 IM |
902 | struct kvm_memory_slot *memslots = slots->memslots; |
903 | ||
904 | if (gfn >= memslots[slot].base_gfn && | |
905 | gfn < memslots[slot].base_gfn + memslots[slot].npages) | |
906 | return &memslots[slot]; | |
907 | ||
908 | while (start < end) { | |
909 | slot = start + (end - start) / 2; | |
910 | ||
911 | if (gfn >= memslots[slot].base_gfn) | |
912 | end = slot; | |
913 | else | |
914 | start = slot + 1; | |
915 | } | |
916 | ||
917 | if (gfn >= memslots[start].base_gfn && | |
918 | gfn < memslots[start].base_gfn + memslots[start].npages) { | |
919 | atomic_set(&slots->lru_slot, start); | |
920 | return &memslots[start]; | |
921 | } | |
9d4cba7f PM |
922 | |
923 | return NULL; | |
924 | } | |
925 | ||
926 | static inline struct kvm_memory_slot * | |
927 | __gfn_to_memslot(struct kvm_memslots *slots, gfn_t gfn) | |
928 | { | |
929 | return search_memslots(slots, gfn); | |
930 | } | |
931 | ||
66a03505 GS |
932 | static inline unsigned long |
933 | __gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn) | |
934 | { | |
935 | return slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE; | |
936 | } | |
937 | ||
0ee8dcb8 XG |
938 | static inline int memslot_id(struct kvm *kvm, gfn_t gfn) |
939 | { | |
940 | return gfn_to_memslot(kvm, gfn)->id; | |
941 | } | |
942 | ||
d19a748b TY |
943 | static inline gfn_t |
944 | hva_to_gfn_memslot(unsigned long hva, struct kvm_memory_slot *slot) | |
887c08ac | 945 | { |
d19a748b TY |
946 | gfn_t gfn_offset = (hva - slot->userspace_addr) >> PAGE_SHIFT; |
947 | ||
948 | return slot->base_gfn + gfn_offset; | |
887c08ac XG |
949 | } |
950 | ||
1755fbcc AK |
951 | static inline gpa_t gfn_to_gpa(gfn_t gfn) |
952 | { | |
953 | return (gpa_t)gfn << PAGE_SHIFT; | |
954 | } | |
6aa8b732 | 955 | |
c30a358d JR |
956 | static inline gfn_t gpa_to_gfn(gpa_t gpa) |
957 | { | |
958 | return (gfn_t)(gpa >> PAGE_SHIFT); | |
959 | } | |
960 | ||
62c476c7 BAY |
961 | static inline hpa_t pfn_to_hpa(pfn_t pfn) |
962 | { | |
963 | return (hpa_t)pfn << PAGE_SHIFT; | |
964 | } | |
965 | ||
dfeec843 HC |
966 | static inline bool kvm_is_error_gpa(struct kvm *kvm, gpa_t gpa) |
967 | { | |
968 | unsigned long hva = gfn_to_hva(kvm, gpa_to_gfn(gpa)); | |
969 | ||
970 | return kvm_is_error_hva(hva); | |
971 | } | |
972 | ||
2f599714 | 973 | static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu) |
2f52d58c AK |
974 | { |
975 | set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests); | |
976 | } | |
977 | ||
ba1389b7 AK |
978 | enum kvm_stat_kind { |
979 | KVM_STAT_VM, | |
980 | KVM_STAT_VCPU, | |
981 | }; | |
982 | ||
417bc304 HB |
983 | struct kvm_stats_debugfs_item { |
984 | const char *name; | |
985 | int offset; | |
ba1389b7 | 986 | enum kvm_stat_kind kind; |
417bc304 HB |
987 | struct dentry *dentry; |
988 | }; | |
989 | extern struct kvm_stats_debugfs_item debugfs_entries[]; | |
76f7c879 | 990 | extern struct dentry *kvm_debugfs_dir; |
d4c9ff2d | 991 | |
36c1ed82 | 992 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
8ca40a70 | 993 | static inline int mmu_notifier_retry(struct kvm *kvm, unsigned long mmu_seq) |
e930bffe | 994 | { |
8ca40a70 | 995 | if (unlikely(kvm->mmu_notifier_count)) |
e930bffe AA |
996 | return 1; |
997 | /* | |
a355aa54 PM |
998 | * Ensure the read of mmu_notifier_count happens before the read |
999 | * of mmu_notifier_seq. This interacts with the smp_wmb() in | |
1000 | * mmu_notifier_invalidate_range_end to make sure that the caller | |
1001 | * either sees the old (non-zero) value of mmu_notifier_count or | |
1002 | * the new (incremented) value of mmu_notifier_seq. | |
1003 | * PowerPC Book3s HV KVM calls this under a per-page lock | |
1004 | * rather than under kvm->mmu_lock, for scalability, so | |
1005 | * can't rely on kvm->mmu_lock to keep things ordered. | |
e930bffe | 1006 | */ |
a355aa54 | 1007 | smp_rmb(); |
8ca40a70 | 1008 | if (kvm->mmu_notifier_seq != mmu_seq) |
e930bffe AA |
1009 | return 1; |
1010 | return 0; | |
1011 | } | |
1012 | #endif | |
1013 | ||
a725d56a | 1014 | #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING |
399ec807 | 1015 | |
f3f710bc CH |
1016 | #ifdef CONFIG_S390 |
1017 | #define KVM_MAX_IRQ_ROUTES 4096 //FIXME: we can have more than that... | |
1018 | #else | |
399ec807 | 1019 | #define KVM_MAX_IRQ_ROUTES 1024 |
f3f710bc | 1020 | #endif |
399ec807 AK |
1021 | |
1022 | int kvm_setup_default_irq_routing(struct kvm *kvm); | |
49df6397 | 1023 | int kvm_setup_empty_irq_routing(struct kvm *kvm); |
399ec807 AK |
1024 | int kvm_set_irq_routing(struct kvm *kvm, |
1025 | const struct kvm_irq_routing_entry *entries, | |
1026 | unsigned nr, | |
1027 | unsigned flags); | |
8ba918d4 | 1028 | int kvm_set_routing_entry(struct kvm_kernel_irq_routing_entry *e, |
e8cde093 | 1029 | const struct kvm_irq_routing_entry *ue); |
399ec807 AK |
1030 | void kvm_free_irq_routing(struct kvm *kvm); |
1031 | ||
1032 | #else | |
1033 | ||
1034 | static inline void kvm_free_irq_routing(struct kvm *kvm) {} | |
1035 | ||
1036 | #endif | |
1037 | ||
297e2105 PM |
1038 | int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi); |
1039 | ||
721eecbf GH |
1040 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
1041 | ||
d34e6b17 | 1042 | void kvm_eventfd_init(struct kvm *kvm); |
914daba8 AG |
1043 | int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args); |
1044 | ||
297e2105 | 1045 | #ifdef CONFIG_HAVE_KVM_IRQFD |
d4db2935 | 1046 | int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args); |
721eecbf | 1047 | void kvm_irqfd_release(struct kvm *kvm); |
9957c86d | 1048 | void kvm_irq_routing_update(struct kvm *); |
914daba8 AG |
1049 | #else |
1050 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) | |
1051 | { | |
1052 | return -EINVAL; | |
1053 | } | |
1054 | ||
1055 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
1056 | #endif | |
721eecbf GH |
1057 | |
1058 | #else | |
1059 | ||
d34e6b17 | 1060 | static inline void kvm_eventfd_init(struct kvm *kvm) {} |
bd2b53b2 | 1061 | |
d4db2935 | 1062 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) |
721eecbf GH |
1063 | { |
1064 | return -EINVAL; | |
1065 | } | |
1066 | ||
1067 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
bd2b53b2 | 1068 | |
27923eb1 | 1069 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
9957c86d | 1070 | static inline void kvm_irq_routing_update(struct kvm *kvm) |
bd2b53b2 | 1071 | { |
bd2b53b2 | 1072 | } |
27923eb1 | 1073 | #endif |
bd2b53b2 | 1074 | |
d34e6b17 GH |
1075 | static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) |
1076 | { | |
1077 | return -ENOSYS; | |
1078 | } | |
721eecbf GH |
1079 | |
1080 | #endif /* CONFIG_HAVE_KVM_EVENTFD */ | |
1081 | ||
73880c80 | 1082 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
3e515705 | 1083 | bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu); |
3e515705 | 1084 | #else |
3e515705 | 1085 | static inline bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu) { return true; } |
6aa8b732 | 1086 | #endif |
bfd99ff5 | 1087 | |
a8eeb04a AK |
1088 | static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu) |
1089 | { | |
1090 | set_bit(req, &vcpu->requests); | |
1091 | } | |
1092 | ||
a8eeb04a AK |
1093 | static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu) |
1094 | { | |
0719837c AK |
1095 | if (test_bit(req, &vcpu->requests)) { |
1096 | clear_bit(req, &vcpu->requests); | |
1097 | return true; | |
1098 | } else { | |
1099 | return false; | |
1100 | } | |
a8eeb04a AK |
1101 | } |
1102 | ||
8b415dcd GL |
1103 | extern bool kvm_rebooting; |
1104 | ||
852b6d57 SW |
1105 | struct kvm_device { |
1106 | struct kvm_device_ops *ops; | |
1107 | struct kvm *kvm; | |
852b6d57 | 1108 | void *private; |
07f0a7bd | 1109 | struct list_head vm_node; |
852b6d57 SW |
1110 | }; |
1111 | ||
1112 | /* create, destroy, and name are mandatory */ | |
1113 | struct kvm_device_ops { | |
1114 | const char *name; | |
1115 | int (*create)(struct kvm_device *dev, u32 type); | |
1116 | ||
1117 | /* | |
1118 | * Destroy is responsible for freeing dev. | |
1119 | * | |
1120 | * Destroy may be called before or after destructors are called | |
1121 | * on emulated I/O regions, depending on whether a reference is | |
1122 | * held by a vcpu or other kvm component that gets destroyed | |
1123 | * after the emulated I/O. | |
1124 | */ | |
1125 | void (*destroy)(struct kvm_device *dev); | |
1126 | ||
1127 | int (*set_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1128 | int (*get_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1129 | int (*has_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1130 | long (*ioctl)(struct kvm_device *dev, unsigned int ioctl, | |
1131 | unsigned long arg); | |
1132 | }; | |
1133 | ||
1134 | void kvm_device_get(struct kvm_device *dev); | |
1135 | void kvm_device_put(struct kvm_device *dev); | |
1136 | struct kvm_device *kvm_device_from_filp(struct file *filp); | |
d60eacb0 | 1137 | int kvm_register_device_ops(struct kvm_device_ops *ops, u32 type); |
571ee1b6 | 1138 | void kvm_unregister_device_ops(u32 type); |
852b6d57 | 1139 | |
5df554ad | 1140 | extern struct kvm_device_ops kvm_mpic_ops; |
5975a2e0 | 1141 | extern struct kvm_device_ops kvm_xics_ops; |
ea2f83a7 | 1142 | extern struct kvm_device_ops kvm_arm_vgic_v2_ops; |
a0675c25 | 1143 | extern struct kvm_device_ops kvm_arm_vgic_v3_ops; |
5df554ad | 1144 | |
4c088493 R |
1145 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
1146 | ||
1147 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
1148 | { | |
1149 | vcpu->spin_loop.in_spin_loop = val; | |
1150 | } | |
1151 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
1152 | { | |
1153 | vcpu->spin_loop.dy_eligible = val; | |
1154 | } | |
1155 | ||
1156 | #else /* !CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ | |
1157 | ||
1158 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
1159 | { | |
1160 | } | |
1161 | ||
1162 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
1163 | { | |
1164 | } | |
4c088493 | 1165 | #endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ |
bfd99ff5 | 1166 | #endif |