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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 |
6aa8b732 | 143 | |
7a84428a AW |
144 | #define KVM_USERSPACE_IRQ_SOURCE_ID 0 |
145 | #define KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID 1 | |
5550af4d | 146 | |
c16f862d | 147 | extern struct kmem_cache *kvm_vcpu_cache; |
6aa8b732 | 148 | |
2f303b74 | 149 | extern spinlock_t kvm_lock; |
fc1b7492 GL |
150 | extern struct list_head vm_list; |
151 | ||
743eeb0b SL |
152 | struct kvm_io_range { |
153 | gpa_t addr; | |
154 | int len; | |
155 | struct kvm_io_device *dev; | |
156 | }; | |
157 | ||
786a9f88 | 158 | #define NR_IOBUS_DEVS 1000 |
a1300716 | 159 | |
2eeb2e94 | 160 | struct kvm_io_bus { |
6ea34c9b AK |
161 | int dev_count; |
162 | int ioeventfd_count; | |
a1300716 | 163 | struct kvm_io_range range[]; |
2eeb2e94 GH |
164 | }; |
165 | ||
e93f8a0f MT |
166 | enum kvm_bus { |
167 | KVM_MMIO_BUS, | |
168 | KVM_PIO_BUS, | |
060f0ce6 | 169 | KVM_VIRTIO_CCW_NOTIFY_BUS, |
68c3b4d1 | 170 | KVM_FAST_MMIO_BUS, |
e93f8a0f MT |
171 | KVM_NR_BUSES |
172 | }; | |
173 | ||
e32edf4f | 174 | int kvm_io_bus_write(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr, |
e93f8a0f | 175 | int len, const void *val); |
e32edf4f NN |
176 | int kvm_io_bus_write_cookie(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, |
177 | gpa_t addr, int len, const void *val, long cookie); | |
178 | int kvm_io_bus_read(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr, | |
179 | int len, void *val); | |
743eeb0b SL |
180 | int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, |
181 | int len, struct kvm_io_device *dev); | |
e93f8a0f MT |
182 | int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx, |
183 | struct kvm_io_device *dev); | |
2eeb2e94 | 184 | |
af585b92 GN |
185 | #ifdef CONFIG_KVM_ASYNC_PF |
186 | struct kvm_async_pf { | |
187 | struct work_struct work; | |
188 | struct list_head link; | |
189 | struct list_head queue; | |
190 | struct kvm_vcpu *vcpu; | |
191 | struct mm_struct *mm; | |
192 | gva_t gva; | |
193 | unsigned long addr; | |
194 | struct kvm_arch_async_pf arch; | |
f2e10669 | 195 | bool wakeup_all; |
af585b92 GN |
196 | }; |
197 | ||
198 | void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu); | |
199 | void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu); | |
e0ead41a | 200 | int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, unsigned long hva, |
af585b92 | 201 | struct kvm_arch_async_pf *arch); |
344d9588 | 202 | int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu); |
af585b92 GN |
203 | #endif |
204 | ||
6b7e2d09 XG |
205 | enum { |
206 | OUTSIDE_GUEST_MODE, | |
207 | IN_GUEST_MODE, | |
c142786c AK |
208 | EXITING_GUEST_MODE, |
209 | READING_SHADOW_PAGE_TABLES, | |
6b7e2d09 XG |
210 | }; |
211 | ||
f78146b0 AK |
212 | /* |
213 | * Sometimes a large or cross-page mmio needs to be broken up into separate | |
214 | * exits for userspace servicing. | |
215 | */ | |
216 | struct kvm_mmio_fragment { | |
217 | gpa_t gpa; | |
218 | void *data; | |
219 | unsigned len; | |
220 | }; | |
221 | ||
d17fbbf7 ZX |
222 | struct kvm_vcpu { |
223 | struct kvm *kvm; | |
31bb117e | 224 | #ifdef CONFIG_PREEMPT_NOTIFIERS |
d17fbbf7 | 225 | struct preempt_notifier preempt_notifier; |
31bb117e | 226 | #endif |
6b7e2d09 | 227 | int cpu; |
d17fbbf7 | 228 | int vcpu_id; |
6b7e2d09 XG |
229 | int srcu_idx; |
230 | int mode; | |
d17fbbf7 | 231 | unsigned long requests; |
d0bfb940 | 232 | unsigned long guest_debug; |
6b7e2d09 XG |
233 | |
234 | struct mutex mutex; | |
235 | struct kvm_run *run; | |
f656ce01 | 236 | |
d17fbbf7 | 237 | int fpu_active; |
2acf923e | 238 | int guest_fpu_loaded, guest_xcr0_loaded; |
653f52c3 | 239 | unsigned char fpu_counter; |
d17fbbf7 | 240 | wait_queue_head_t wq; |
34bb10b7 | 241 | struct pid *pid; |
d17fbbf7 ZX |
242 | int sigset_active; |
243 | sigset_t sigset; | |
244 | struct kvm_vcpu_stat stat; | |
19020f8a | 245 | unsigned int halt_poll_ns; |
d17fbbf7 | 246 | |
34c16eec | 247 | #ifdef CONFIG_HAS_IOMEM |
d17fbbf7 ZX |
248 | int mmio_needed; |
249 | int mmio_read_completed; | |
250 | int mmio_is_write; | |
f78146b0 AK |
251 | int mmio_cur_fragment; |
252 | int mmio_nr_fragments; | |
253 | struct kvm_mmio_fragment mmio_fragments[KVM_MAX_MMIO_FRAGMENTS]; | |
34c16eec | 254 | #endif |
1165f5fe | 255 | |
af585b92 GN |
256 | #ifdef CONFIG_KVM_ASYNC_PF |
257 | struct { | |
258 | u32 queued; | |
259 | struct list_head queue; | |
260 | struct list_head done; | |
261 | spinlock_t lock; | |
262 | } async_pf; | |
263 | #endif | |
264 | ||
4c088493 R |
265 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
266 | /* | |
267 | * Cpu relax intercept or pause loop exit optimization | |
268 | * in_spin_loop: set when a vcpu does a pause loop exit | |
269 | * or cpu relax intercepted. | |
270 | * dy_eligible: indicates whether vcpu is eligible for directed yield. | |
271 | */ | |
272 | struct { | |
273 | bool in_spin_loop; | |
274 | bool dy_eligible; | |
275 | } spin_loop; | |
276 | #endif | |
3a08a8f9 | 277 | bool preempted; |
d657a98e ZX |
278 | struct kvm_vcpu_arch arch; |
279 | }; | |
280 | ||
6b7e2d09 XG |
281 | static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu) |
282 | { | |
283 | return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE); | |
284 | } | |
285 | ||
660c22c4 TY |
286 | /* |
287 | * Some of the bitops functions do not support too long bitmaps. | |
288 | * This number must be determined not to exceed such limits. | |
289 | */ | |
290 | #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1) | |
291 | ||
6aa8b732 AK |
292 | struct kvm_memory_slot { |
293 | gfn_t base_gfn; | |
294 | unsigned long npages; | |
6aa8b732 | 295 | unsigned long *dirty_bitmap; |
db3fe4eb | 296 | struct kvm_arch_memory_slot arch; |
8a7ae055 | 297 | unsigned long userspace_addr; |
6104f472 | 298 | u32 flags; |
1e702d9a | 299 | short id; |
6aa8b732 AK |
300 | }; |
301 | ||
87bf6e7d TY |
302 | static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot) |
303 | { | |
304 | return ALIGN(memslot->npages, BITS_PER_LONG) / 8; | |
305 | } | |
306 | ||
84223598 CH |
307 | struct kvm_s390_adapter_int { |
308 | u64 ind_addr; | |
309 | u64 summary_addr; | |
310 | u64 ind_offset; | |
311 | u32 summary_offset; | |
312 | u32 adapter_id; | |
313 | }; | |
314 | ||
399ec807 AK |
315 | struct kvm_kernel_irq_routing_entry { |
316 | u32 gsi; | |
5116d8f6 | 317 | u32 type; |
4925663a | 318 | int (*set)(struct kvm_kernel_irq_routing_entry *e, |
aa2fbe6d YZ |
319 | struct kvm *kvm, int irq_source_id, int level, |
320 | bool line_status); | |
399ec807 AK |
321 | union { |
322 | struct { | |
323 | unsigned irqchip; | |
324 | unsigned pin; | |
325 | } irqchip; | |
79950e10 | 326 | struct msi_msg msi; |
84223598 | 327 | struct kvm_s390_adapter_int adapter; |
399ec807 | 328 | }; |
46e624b9 GN |
329 | struct hlist_node link; |
330 | }; | |
331 | ||
0743247f AW |
332 | #ifndef KVM_PRIVATE_MEM_SLOTS |
333 | #define KVM_PRIVATE_MEM_SLOTS 0 | |
334 | #endif | |
335 | ||
93a5cef0 | 336 | #ifndef KVM_MEM_SLOTS_NUM |
bbacc0c1 | 337 | #define KVM_MEM_SLOTS_NUM (KVM_USER_MEM_SLOTS + KVM_PRIVATE_MEM_SLOTS) |
93a5cef0 XG |
338 | #endif |
339 | ||
f481b069 PB |
340 | #ifndef __KVM_VCPU_MULTIPLE_ADDRESS_SPACE |
341 | static inline int kvm_arch_vcpu_memslots_id(struct kvm_vcpu *vcpu) | |
342 | { | |
343 | return 0; | |
344 | } | |
345 | #endif | |
346 | ||
bf3e05bc XG |
347 | /* |
348 | * Note: | |
349 | * memslots are not sorted by id anymore, please use id_to_memslot() | |
350 | * to get the memslot by its id. | |
351 | */ | |
46a26bf5 | 352 | struct kvm_memslots { |
49c7754c | 353 | u64 generation; |
93a5cef0 | 354 | struct kvm_memory_slot memslots[KVM_MEM_SLOTS_NUM]; |
f85e2cb5 | 355 | /* The mapping table from slot id to the index in memslots[]. */ |
1e702d9a | 356 | short id_to_index[KVM_MEM_SLOTS_NUM]; |
d4ae84a0 | 357 | atomic_t lru_slot; |
9c1a5d38 | 358 | int used_slots; |
46a26bf5 MT |
359 | }; |
360 | ||
6aa8b732 | 361 | struct kvm { |
aaee2c94 | 362 | spinlock_t mmu_lock; |
79fac95e | 363 | struct mutex slots_lock; |
6d4e4c4f | 364 | struct mm_struct *mm; /* userspace tied to this vm */ |
f481b069 | 365 | struct kvm_memslots *memslots[KVM_ADDRESS_SPACE_NUM]; |
bc6678a3 | 366 | struct srcu_struct srcu; |
719d93cd | 367 | struct srcu_struct irq_srcu; |
fb3f0f51 | 368 | struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; |
73880c80 | 369 | atomic_t online_vcpus; |
217ece61 | 370 | int last_boosted_vcpu; |
133de902 | 371 | struct list_head vm_list; |
60eead79 | 372 | struct mutex lock; |
e93f8a0f | 373 | struct kvm_io_bus *buses[KVM_NR_BUSES]; |
721eecbf GH |
374 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
375 | struct { | |
376 | spinlock_t lock; | |
377 | struct list_head items; | |
7a84428a AW |
378 | struct list_head resampler_list; |
379 | struct mutex resampler_lock; | |
721eecbf | 380 | } irqfds; |
d34e6b17 | 381 | struct list_head ioeventfds; |
721eecbf | 382 | #endif |
ba1389b7 | 383 | struct kvm_vm_stat stat; |
d69fb81f | 384 | struct kvm_arch arch; |
d39f13b0 | 385 | atomic_t users_count; |
5f94c174 | 386 | #ifdef KVM_COALESCED_MMIO_PAGE_OFFSET |
5f94c174 | 387 | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; |
2b3c246a SL |
388 | spinlock_t ring_lock; |
389 | struct list_head coalesced_zones; | |
5f94c174 | 390 | #endif |
e930bffe | 391 | |
60eead79 | 392 | struct mutex irq_lock; |
75858a84 | 393 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 | 394 | /* |
9957c86d | 395 | * Update side is protected by irq_lock. |
bd2b53b2 | 396 | */ |
4b6a2872 | 397 | struct kvm_irq_routing_table __rcu *irq_routing; |
c77dcacb PB |
398 | #endif |
399 | #ifdef CONFIG_HAVE_KVM_IRQFD | |
136bdfee | 400 | struct hlist_head irq_ack_notifier_list; |
75858a84 AK |
401 | #endif |
402 | ||
36c1ed82 | 403 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
e930bffe AA |
404 | struct mmu_notifier mmu_notifier; |
405 | unsigned long mmu_notifier_seq; | |
406 | long mmu_notifier_count; | |
407 | #endif | |
a086f6a1 | 408 | long tlbs_dirty; |
07f0a7bd | 409 | struct list_head devices; |
6aa8b732 AK |
410 | }; |
411 | ||
a737f256 CD |
412 | #define kvm_err(fmt, ...) \ |
413 | pr_err("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
414 | #define kvm_info(fmt, ...) \ | |
415 | pr_info("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
416 | #define kvm_debug(fmt, ...) \ | |
417 | pr_debug("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
418 | #define kvm_pr_unimpl(fmt, ...) \ | |
419 | pr_err_ratelimited("kvm [%i]: " fmt, \ | |
420 | task_tgid_nr(current), ## __VA_ARGS__) | |
f0242478 | 421 | |
a737f256 CD |
422 | /* The guest did something we don't support. */ |
423 | #define vcpu_unimpl(vcpu, fmt, ...) \ | |
424 | kvm_pr_unimpl("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__) | |
6aa8b732 | 425 | |
ee86dbc6 AS |
426 | #define vcpu_debug(vcpu, fmt, ...) \ |
427 | kvm_debug("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__) | |
428 | ||
988a2cae GN |
429 | static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i) |
430 | { | |
dd489240 PB |
431 | /* Pairs with smp_wmb() in kvm_vm_ioctl_create_vcpu, in case |
432 | * the caller has read kvm->online_vcpus before (as is the case | |
433 | * for kvm_for_each_vcpu, for example). | |
434 | */ | |
988a2cae GN |
435 | smp_rmb(); |
436 | return kvm->vcpus[i]; | |
437 | } | |
438 | ||
439 | #define kvm_for_each_vcpu(idx, vcpup, kvm) \ | |
b42fc3cb JM |
440 | for (idx = 0; \ |
441 | idx < atomic_read(&kvm->online_vcpus) && \ | |
442 | (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \ | |
443 | idx++) | |
988a2cae | 444 | |
be6ba0f0 XG |
445 | #define kvm_for_each_memslot(memslot, slots) \ |
446 | for (memslot = &slots->memslots[0]; \ | |
bf3e05bc XG |
447 | memslot < slots->memslots + KVM_MEM_SLOTS_NUM && memslot->npages;\ |
448 | memslot++) | |
be6ba0f0 | 449 | |
fb3f0f51 RR |
450 | int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id); |
451 | void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); | |
452 | ||
9fc77441 | 453 | int __must_check vcpu_load(struct kvm_vcpu *vcpu); |
313a3dc7 CO |
454 | void vcpu_put(struct kvm_vcpu *vcpu); |
455 | ||
6ef768fa PB |
456 | #ifdef __KVM_HAVE_IOAPIC |
457 | void kvm_vcpu_request_scan_ioapic(struct kvm *kvm); | |
458 | #else | |
459 | static inline void kvm_vcpu_request_scan_ioapic(struct kvm *kvm) | |
460 | { | |
461 | } | |
462 | #endif | |
463 | ||
297e2105 | 464 | #ifdef CONFIG_HAVE_KVM_IRQFD |
a0f155e9 CH |
465 | int kvm_irqfd_init(void); |
466 | void kvm_irqfd_exit(void); | |
467 | #else | |
468 | static inline int kvm_irqfd_init(void) | |
469 | { | |
470 | return 0; | |
471 | } | |
472 | ||
473 | static inline void kvm_irqfd_exit(void) | |
474 | { | |
475 | } | |
476 | #endif | |
0ee75bea | 477 | int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, |
c16f862d | 478 | struct module *module); |
cb498ea2 | 479 | void kvm_exit(void); |
6aa8b732 | 480 | |
d39f13b0 IE |
481 | void kvm_get_kvm(struct kvm *kvm); |
482 | void kvm_put_kvm(struct kvm *kvm); | |
483 | ||
f481b069 | 484 | static inline struct kvm_memslots *__kvm_memslots(struct kvm *kvm, int as_id) |
90d83dc3 | 485 | { |
f481b069 | 486 | return rcu_dereference_check(kvm->memslots[as_id], |
90d83dc3 LJ |
487 | srcu_read_lock_held(&kvm->srcu) |
488 | || lockdep_is_held(&kvm->slots_lock)); | |
489 | } | |
490 | ||
f481b069 PB |
491 | static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm) |
492 | { | |
493 | return __kvm_memslots(kvm, 0); | |
494 | } | |
495 | ||
8e73485c PB |
496 | static inline struct kvm_memslots *kvm_vcpu_memslots(struct kvm_vcpu *vcpu) |
497 | { | |
f481b069 PB |
498 | int as_id = kvm_arch_vcpu_memslots_id(vcpu); |
499 | ||
500 | return __kvm_memslots(vcpu->kvm, as_id); | |
8e73485c PB |
501 | } |
502 | ||
28a37544 XG |
503 | static inline struct kvm_memory_slot * |
504 | id_to_memslot(struct kvm_memslots *slots, int id) | |
505 | { | |
f85e2cb5 XG |
506 | int index = slots->id_to_index[id]; |
507 | struct kvm_memory_slot *slot; | |
bf3e05bc | 508 | |
f85e2cb5 | 509 | slot = &slots->memslots[index]; |
bf3e05bc | 510 | |
f85e2cb5 XG |
511 | WARN_ON(slot->id != id); |
512 | return slot; | |
28a37544 XG |
513 | } |
514 | ||
74d0727c TY |
515 | /* |
516 | * KVM_SET_USER_MEMORY_REGION ioctl allows the following operations: | |
517 | * - create a new memory slot | |
518 | * - delete an existing memory slot | |
519 | * - modify an existing memory slot | |
520 | * -- move it in the guest physical memory space | |
521 | * -- just change its flags | |
522 | * | |
523 | * Since flags can be changed by some of these operations, the following | |
524 | * differentiation is the best we can do for __kvm_set_memory_region(): | |
525 | */ | |
526 | enum kvm_mr_change { | |
527 | KVM_MR_CREATE, | |
528 | KVM_MR_DELETE, | |
529 | KVM_MR_MOVE, | |
530 | KVM_MR_FLAGS_ONLY, | |
531 | }; | |
532 | ||
210c7c4d | 533 | int kvm_set_memory_region(struct kvm *kvm, |
09170a49 | 534 | const struct kvm_userspace_memory_region *mem); |
f78e0e2e | 535 | int __kvm_set_memory_region(struct kvm *kvm, |
09170a49 | 536 | const struct kvm_userspace_memory_region *mem); |
5587027c | 537 | void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free, |
db3fe4eb | 538 | struct kvm_memory_slot *dont); |
5587027c AK |
539 | int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, |
540 | unsigned long npages); | |
15f46015 | 541 | void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots); |
f7784b8e MT |
542 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
543 | struct kvm_memory_slot *memslot, | |
09170a49 | 544 | const struct kvm_userspace_memory_region *mem, |
7b6195a9 | 545 | enum kvm_mr_change change); |
f7784b8e | 546 | void kvm_arch_commit_memory_region(struct kvm *kvm, |
09170a49 | 547 | const struct kvm_userspace_memory_region *mem, |
8482644a | 548 | const struct kvm_memory_slot *old, |
f36f3f28 | 549 | const struct kvm_memory_slot *new, |
8482644a | 550 | enum kvm_mr_change change); |
db3fe4eb | 551 | bool kvm_largepages_enabled(void); |
54dee993 | 552 | void kvm_disable_largepages(void); |
2df72e9b MT |
553 | /* flush all memory translations */ |
554 | void kvm_arch_flush_shadow_all(struct kvm *kvm); | |
555 | /* flush memory translations pointing to 'slot' */ | |
556 | void kvm_arch_flush_shadow_memslot(struct kvm *kvm, | |
557 | struct kvm_memory_slot *slot); | |
a983fb23 | 558 | |
d9ef13c2 PB |
559 | int gfn_to_page_many_atomic(struct kvm_memory_slot *slot, gfn_t gfn, |
560 | struct page **pages, int nr_pages); | |
48987781 | 561 | |
954bbbc2 | 562 | struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); |
05da4558 | 563 | unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn); |
ba6a3541 | 564 | unsigned long gfn_to_hva_prot(struct kvm *kvm, gfn_t gfn, bool *writable); |
4d8b81ab | 565 | unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
64d83126 CD |
566 | unsigned long gfn_to_hva_memslot_prot(struct kvm_memory_slot *slot, gfn_t gfn, |
567 | bool *writable); | |
b4231d61 IE |
568 | void kvm_release_page_clean(struct page *page); |
569 | void kvm_release_page_dirty(struct page *page); | |
35149e21 AL |
570 | void kvm_set_page_accessed(struct page *page); |
571 | ||
365fb3fd | 572 | pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn); |
35149e21 | 573 | pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn); |
612819c3 MT |
574 | pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault, |
575 | bool *writable); | |
d5661048 | 576 | pfn_t gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
037d92dc | 577 | pfn_t gfn_to_pfn_memslot_atomic(struct kvm_memory_slot *slot, gfn_t gfn); |
3520469d PB |
578 | pfn_t __gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn, bool atomic, |
579 | bool *async, bool write_fault, bool *writable); | |
037d92dc | 580 | |
35149e21 AL |
581 | void kvm_release_pfn_clean(pfn_t pfn); |
582 | void kvm_set_pfn_dirty(pfn_t pfn); | |
583 | void kvm_set_pfn_accessed(pfn_t pfn); | |
584 | void kvm_get_pfn(pfn_t pfn); | |
585 | ||
195aefde IE |
586 | int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, |
587 | int len); | |
7ec54588 MT |
588 | int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data, |
589 | unsigned long len); | |
195aefde | 590 | int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); |
e03b644f GN |
591 | int kvm_read_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
592 | void *data, unsigned long len); | |
195aefde IE |
593 | int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, |
594 | int offset, int len); | |
595 | int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, | |
596 | unsigned long len); | |
49c7754c GN |
597 | int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
598 | void *data, unsigned long len); | |
599 | int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc, | |
8f964525 | 600 | gpa_t gpa, unsigned long len); |
195aefde IE |
601 | int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); |
602 | int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); | |
6aa8b732 | 603 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); |
e0d62c7f | 604 | int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); |
8f0b1ab6 | 605 | unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn); |
6aa8b732 AK |
606 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); |
607 | ||
8e73485c PB |
608 | struct kvm_memslots *kvm_vcpu_memslots(struct kvm_vcpu *vcpu); |
609 | struct kvm_memory_slot *kvm_vcpu_gfn_to_memslot(struct kvm_vcpu *vcpu, gfn_t gfn); | |
610 | pfn_t kvm_vcpu_gfn_to_pfn_atomic(struct kvm_vcpu *vcpu, gfn_t gfn); | |
611 | pfn_t kvm_vcpu_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn); | |
612 | struct page *kvm_vcpu_gfn_to_page(struct kvm_vcpu *vcpu, gfn_t gfn); | |
613 | unsigned long kvm_vcpu_gfn_to_hva(struct kvm_vcpu *vcpu, gfn_t gfn); | |
614 | unsigned long kvm_vcpu_gfn_to_hva_prot(struct kvm_vcpu *vcpu, gfn_t gfn, bool *writable); | |
615 | int kvm_vcpu_read_guest_page(struct kvm_vcpu *vcpu, gfn_t gfn, void *data, int offset, | |
616 | int len); | |
617 | int kvm_vcpu_read_guest_atomic(struct kvm_vcpu *vcpu, gpa_t gpa, void *data, | |
618 | unsigned long len); | |
619 | int kvm_vcpu_read_guest(struct kvm_vcpu *vcpu, gpa_t gpa, void *data, | |
620 | unsigned long len); | |
621 | int kvm_vcpu_write_guest_page(struct kvm_vcpu *vcpu, gfn_t gfn, const void *data, | |
622 | int offset, int len); | |
623 | int kvm_vcpu_write_guest(struct kvm_vcpu *vcpu, gpa_t gpa, const void *data, | |
624 | unsigned long len); | |
625 | void kvm_vcpu_mark_page_dirty(struct kvm_vcpu *vcpu, gfn_t gfn); | |
626 | ||
8776e519 | 627 | void kvm_vcpu_block(struct kvm_vcpu *vcpu); |
b6d33834 | 628 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
fa93384f | 629 | int kvm_vcpu_yield_to(struct kvm_vcpu *target); |
d255f4f2 | 630 | void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu); |
7702fd1f AK |
631 | void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); |
632 | void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); | |
a4ee1ca4 | 633 | |
d9e368d6 | 634 | void kvm_flush_remote_tlbs(struct kvm *kvm); |
2e53d63a | 635 | void kvm_reload_remote_mmus(struct kvm *kvm); |
d828199e | 636 | void kvm_make_mclock_inprogress_request(struct kvm *kvm); |
3d81bc7e | 637 | void kvm_make_scan_ioapic_request(struct kvm *kvm); |
445b8236 | 638 | bool kvm_make_all_cpus_request(struct kvm *kvm, unsigned int req); |
6aa8b732 | 639 | |
043405e1 CO |
640 | long kvm_arch_dev_ioctl(struct file *filp, |
641 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 CO |
642 | long kvm_arch_vcpu_ioctl(struct file *filp, |
643 | unsigned int ioctl, unsigned long arg); | |
5b1c1493 | 644 | int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf); |
018d00d2 | 645 | |
784aa3d7 | 646 | int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext); |
018d00d2 | 647 | |
5bb064dc ZX |
648 | int kvm_get_dirty_log(struct kvm *kvm, |
649 | struct kvm_dirty_log *log, int *is_dirty); | |
ba0513b5 MS |
650 | |
651 | int kvm_get_dirty_log_protect(struct kvm *kvm, | |
652 | struct kvm_dirty_log *log, bool *is_dirty); | |
653 | ||
3b0f1d01 | 654 | void kvm_arch_mmu_enable_log_dirty_pt_masked(struct kvm *kvm, |
ba0513b5 MS |
655 | struct kvm_memory_slot *slot, |
656 | gfn_t gfn_offset, | |
657 | unsigned long mask); | |
658 | ||
5bb064dc ZX |
659 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, |
660 | struct kvm_dirty_log *log); | |
661 | ||
aa2fbe6d YZ |
662 | int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_level, |
663 | bool line_status); | |
1fe779f8 CO |
664 | long kvm_arch_vm_ioctl(struct file *filp, |
665 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 | 666 | |
d0752060 HB |
667 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); |
668 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); | |
669 | ||
8b006791 ZX |
670 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, |
671 | struct kvm_translation *tr); | |
672 | ||
b6c7a5dc HB |
673 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); |
674 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); | |
675 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
676 | struct kvm_sregs *sregs); | |
677 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
678 | struct kvm_sregs *sregs); | |
62d9f0db MT |
679 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
680 | struct kvm_mp_state *mp_state); | |
681 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
682 | struct kvm_mp_state *mp_state); | |
d0bfb940 JK |
683 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
684 | struct kvm_guest_debug *dbg); | |
b6c7a5dc HB |
685 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); |
686 | ||
f8c16bba ZX |
687 | int kvm_arch_init(void *opaque); |
688 | void kvm_arch_exit(void); | |
043405e1 | 689 | |
e9b11c17 ZX |
690 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); |
691 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu); | |
692 | ||
e790d9ef RK |
693 | void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu); |
694 | ||
e9b11c17 ZX |
695 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu); |
696 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
697 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); | |
698 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); | |
26e5215f | 699 | int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu); |
31928aa5 | 700 | void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu); |
d40ccc62 | 701 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu); |
e9b11c17 | 702 | |
13a34e06 RK |
703 | int kvm_arch_hardware_enable(void); |
704 | void kvm_arch_hardware_disable(void); | |
e9b11c17 ZX |
705 | int kvm_arch_hardware_setup(void); |
706 | void kvm_arch_hardware_unsetup(void); | |
707 | void kvm_arch_check_processor_compat(void *rtn); | |
1d737c8a | 708 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu); |
b6d33834 | 709 | int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu); |
e9b11c17 | 710 | |
c1a7b32a | 711 | void *kvm_kvzalloc(unsigned long size); |
c1a7b32a | 712 | |
d89f5eff JK |
713 | #ifndef __KVM_HAVE_ARCH_VM_ALLOC |
714 | static inline struct kvm *kvm_arch_alloc_vm(void) | |
715 | { | |
716 | return kzalloc(sizeof(struct kvm), GFP_KERNEL); | |
717 | } | |
718 | ||
719 | static inline void kvm_arch_free_vm(struct kvm *kvm) | |
720 | { | |
721 | kfree(kvm); | |
722 | } | |
723 | #endif | |
724 | ||
e0f0bbc5 AW |
725 | #ifdef __KVM_HAVE_ARCH_NONCOHERENT_DMA |
726 | void kvm_arch_register_noncoherent_dma(struct kvm *kvm); | |
727 | void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm); | |
728 | bool kvm_arch_has_noncoherent_dma(struct kvm *kvm); | |
729 | #else | |
730 | static inline void kvm_arch_register_noncoherent_dma(struct kvm *kvm) | |
731 | { | |
732 | } | |
733 | ||
734 | static inline void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm) | |
735 | { | |
736 | } | |
737 | ||
738 | static inline bool kvm_arch_has_noncoherent_dma(struct kvm *kvm) | |
739 | { | |
740 | return false; | |
741 | } | |
742 | #endif | |
5544eb9b PB |
743 | #ifdef __KVM_HAVE_ARCH_ASSIGNED_DEVICE |
744 | void kvm_arch_start_assignment(struct kvm *kvm); | |
745 | void kvm_arch_end_assignment(struct kvm *kvm); | |
746 | bool kvm_arch_has_assigned_device(struct kvm *kvm); | |
747 | #else | |
748 | static inline void kvm_arch_start_assignment(struct kvm *kvm) | |
749 | { | |
750 | } | |
751 | ||
752 | static inline void kvm_arch_end_assignment(struct kvm *kvm) | |
753 | { | |
754 | } | |
755 | ||
756 | static inline bool kvm_arch_has_assigned_device(struct kvm *kvm) | |
757 | { | |
758 | return false; | |
759 | } | |
760 | #endif | |
e0f0bbc5 | 761 | |
b6d33834 CD |
762 | static inline wait_queue_head_t *kvm_arch_vcpu_wq(struct kvm_vcpu *vcpu) |
763 | { | |
2246f8b5 AG |
764 | #ifdef __KVM_HAVE_ARCH_WQP |
765 | return vcpu->arch.wqp; | |
766 | #else | |
b6d33834 | 767 | return &vcpu->wq; |
b6d33834 | 768 | #endif |
2246f8b5 | 769 | } |
b6d33834 | 770 | |
01c94e64 EA |
771 | #ifdef __KVM_HAVE_ARCH_INTC_INITIALIZED |
772 | /* | |
773 | * returns true if the virtual interrupt controller is initialized and | |
774 | * ready to accept virtual IRQ. On some architectures the virtual interrupt | |
775 | * controller is dynamically instantiated and this is not always true. | |
776 | */ | |
777 | bool kvm_arch_intc_initialized(struct kvm *kvm); | |
778 | #else | |
779 | static inline bool kvm_arch_intc_initialized(struct kvm *kvm) | |
780 | { | |
781 | return true; | |
782 | } | |
783 | #endif | |
784 | ||
e08b9637 | 785 | int kvm_arch_init_vm(struct kvm *kvm, unsigned long type); |
d19a9cd2 | 786 | void kvm_arch_destroy_vm(struct kvm *kvm); |
ad8ba2cd | 787 | void kvm_arch_sync_events(struct kvm *kvm); |
e9b11c17 | 788 | |
3d80840d | 789 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu); |
5736199a | 790 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
682c59a3 | 791 | |
bf4bea8e | 792 | bool kvm_is_reserved_pfn(pfn_t pfn); |
c77fb9dc | 793 | |
62c476c7 BAY |
794 | struct kvm_irq_ack_notifier { |
795 | struct hlist_node link; | |
796 | unsigned gsi; | |
797 | void (*irq_acked)(struct kvm_irq_ack_notifier *kian); | |
798 | }; | |
799 | ||
9957c86d PM |
800 | int kvm_irq_map_gsi(struct kvm *kvm, |
801 | struct kvm_kernel_irq_routing_entry *entries, int gsi); | |
802 | int kvm_irq_map_chip_pin(struct kvm *kvm, unsigned irqchip, unsigned pin); | |
8ba918d4 | 803 | |
aa2fbe6d YZ |
804 | int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level, |
805 | bool line_status); | |
01f21880 | 806 | int kvm_set_irq_inatomic(struct kvm *kvm, int irq_source_id, u32 irq, int level); |
bd2b53b2 | 807 | int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm, |
aa2fbe6d | 808 | int irq_source_id, int level, bool line_status); |
c7c9c56c | 809 | bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin); |
44882eed | 810 | void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin); |
3de42dc0 XZ |
811 | void kvm_register_irq_ack_notifier(struct kvm *kvm, |
812 | struct kvm_irq_ack_notifier *kian); | |
fa40a821 MT |
813 | void kvm_unregister_irq_ack_notifier(struct kvm *kvm, |
814 | struct kvm_irq_ack_notifier *kian); | |
5550af4d SY |
815 | int kvm_request_irq_source_id(struct kvm *kvm); |
816 | void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id); | |
62c476c7 | 817 | |
2a5bab10 | 818 | #ifdef CONFIG_KVM_DEVICE_ASSIGNMENT |
3ad26d81 | 819 | int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
32f6daad | 820 | void kvm_iommu_unmap_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
2a5bab10 | 821 | #else |
62c476c7 | 822 | static inline int kvm_iommu_map_pages(struct kvm *kvm, |
d7a79b6c | 823 | struct kvm_memory_slot *slot) |
62c476c7 BAY |
824 | { |
825 | return 0; | |
826 | } | |
827 | ||
32f6daad AW |
828 | static inline void kvm_iommu_unmap_pages(struct kvm *kvm, |
829 | struct kvm_memory_slot *slot) | |
830 | { | |
831 | } | |
2a5bab10 | 832 | #endif |
62c476c7 | 833 | |
0097d12e CB |
834 | /* must be called with irqs disabled */ |
835 | static inline void __kvm_guest_enter(void) | |
c11f11fc | 836 | { |
c11f11fc | 837 | guest_enter(); |
8fa22068 GN |
838 | /* KVM does not hold any references to rcu protected data when it |
839 | * switches CPU into a guest mode. In fact switching to a guest mode | |
81e87e26 | 840 | * is very similar to exiting to userspace from rcu point of view. In |
8fa22068 GN |
841 | * addition CPU may stay in a guest mode for quite a long time (up to |
842 | * one time slice). Lets treat guest mode as quiescent state, just like | |
843 | * we do with user-mode execution. | |
844 | */ | |
126a6a54 RR |
845 | if (!context_tracking_cpu_is_enabled()) |
846 | rcu_virt_note_context_switch(smp_processor_id()); | |
d172fcd3 LV |
847 | } |
848 | ||
0097d12e CB |
849 | /* must be called with irqs disabled */ |
850 | static inline void __kvm_guest_exit(void) | |
851 | { | |
852 | guest_exit(); | |
853 | } | |
854 | ||
855 | static inline void kvm_guest_enter(void) | |
856 | { | |
857 | unsigned long flags; | |
858 | ||
859 | local_irq_save(flags); | |
860 | __kvm_guest_enter(); | |
861 | local_irq_restore(flags); | |
862 | } | |
863 | ||
d172fcd3 LV |
864 | static inline void kvm_guest_exit(void) |
865 | { | |
c11f11fc FW |
866 | unsigned long flags; |
867 | ||
868 | local_irq_save(flags); | |
0097d12e | 869 | __kvm_guest_exit(); |
c11f11fc | 870 | local_irq_restore(flags); |
d172fcd3 LV |
871 | } |
872 | ||
9d4cba7f PM |
873 | /* |
874 | * search_memslots() and __gfn_to_memslot() are here because they are | |
875 | * used in non-modular code in arch/powerpc/kvm/book3s_hv_rm_mmu.c. | |
876 | * gfn_to_memslot() itself isn't here as an inline because that would | |
877 | * bloat other code too much. | |
878 | */ | |
879 | static inline struct kvm_memory_slot * | |
880 | search_memslots(struct kvm_memslots *slots, gfn_t gfn) | |
881 | { | |
9c1a5d38 | 882 | int start = 0, end = slots->used_slots; |
d4ae84a0 | 883 | int slot = atomic_read(&slots->lru_slot); |
9c1a5d38 IM |
884 | struct kvm_memory_slot *memslots = slots->memslots; |
885 | ||
886 | if (gfn >= memslots[slot].base_gfn && | |
887 | gfn < memslots[slot].base_gfn + memslots[slot].npages) | |
888 | return &memslots[slot]; | |
889 | ||
890 | while (start < end) { | |
891 | slot = start + (end - start) / 2; | |
892 | ||
893 | if (gfn >= memslots[slot].base_gfn) | |
894 | end = slot; | |
895 | else | |
896 | start = slot + 1; | |
897 | } | |
898 | ||
899 | if (gfn >= memslots[start].base_gfn && | |
900 | gfn < memslots[start].base_gfn + memslots[start].npages) { | |
901 | atomic_set(&slots->lru_slot, start); | |
902 | return &memslots[start]; | |
903 | } | |
9d4cba7f PM |
904 | |
905 | return NULL; | |
906 | } | |
907 | ||
908 | static inline struct kvm_memory_slot * | |
909 | __gfn_to_memslot(struct kvm_memslots *slots, gfn_t gfn) | |
910 | { | |
911 | return search_memslots(slots, gfn); | |
912 | } | |
913 | ||
66a03505 GS |
914 | static inline unsigned long |
915 | __gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn) | |
916 | { | |
917 | return slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE; | |
918 | } | |
919 | ||
0ee8dcb8 XG |
920 | static inline int memslot_id(struct kvm *kvm, gfn_t gfn) |
921 | { | |
922 | return gfn_to_memslot(kvm, gfn)->id; | |
923 | } | |
924 | ||
d19a748b TY |
925 | static inline gfn_t |
926 | hva_to_gfn_memslot(unsigned long hva, struct kvm_memory_slot *slot) | |
887c08ac | 927 | { |
d19a748b TY |
928 | gfn_t gfn_offset = (hva - slot->userspace_addr) >> PAGE_SHIFT; |
929 | ||
930 | return slot->base_gfn + gfn_offset; | |
887c08ac XG |
931 | } |
932 | ||
1755fbcc AK |
933 | static inline gpa_t gfn_to_gpa(gfn_t gfn) |
934 | { | |
935 | return (gpa_t)gfn << PAGE_SHIFT; | |
936 | } | |
6aa8b732 | 937 | |
c30a358d JR |
938 | static inline gfn_t gpa_to_gfn(gpa_t gpa) |
939 | { | |
940 | return (gfn_t)(gpa >> PAGE_SHIFT); | |
941 | } | |
942 | ||
62c476c7 BAY |
943 | static inline hpa_t pfn_to_hpa(pfn_t pfn) |
944 | { | |
945 | return (hpa_t)pfn << PAGE_SHIFT; | |
946 | } | |
947 | ||
dfeec843 HC |
948 | static inline bool kvm_is_error_gpa(struct kvm *kvm, gpa_t gpa) |
949 | { | |
950 | unsigned long hva = gfn_to_hva(kvm, gpa_to_gfn(gpa)); | |
951 | ||
952 | return kvm_is_error_hva(hva); | |
953 | } | |
954 | ||
2f599714 | 955 | static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu) |
2f52d58c AK |
956 | { |
957 | set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests); | |
958 | } | |
959 | ||
ba1389b7 AK |
960 | enum kvm_stat_kind { |
961 | KVM_STAT_VM, | |
962 | KVM_STAT_VCPU, | |
963 | }; | |
964 | ||
417bc304 HB |
965 | struct kvm_stats_debugfs_item { |
966 | const char *name; | |
967 | int offset; | |
ba1389b7 | 968 | enum kvm_stat_kind kind; |
417bc304 HB |
969 | struct dentry *dentry; |
970 | }; | |
971 | extern struct kvm_stats_debugfs_item debugfs_entries[]; | |
76f7c879 | 972 | extern struct dentry *kvm_debugfs_dir; |
d4c9ff2d | 973 | |
36c1ed82 | 974 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
8ca40a70 | 975 | static inline int mmu_notifier_retry(struct kvm *kvm, unsigned long mmu_seq) |
e930bffe | 976 | { |
8ca40a70 | 977 | if (unlikely(kvm->mmu_notifier_count)) |
e930bffe AA |
978 | return 1; |
979 | /* | |
a355aa54 PM |
980 | * Ensure the read of mmu_notifier_count happens before the read |
981 | * of mmu_notifier_seq. This interacts with the smp_wmb() in | |
982 | * mmu_notifier_invalidate_range_end to make sure that the caller | |
983 | * either sees the old (non-zero) value of mmu_notifier_count or | |
984 | * the new (incremented) value of mmu_notifier_seq. | |
985 | * PowerPC Book3s HV KVM calls this under a per-page lock | |
986 | * rather than under kvm->mmu_lock, for scalability, so | |
987 | * can't rely on kvm->mmu_lock to keep things ordered. | |
e930bffe | 988 | */ |
a355aa54 | 989 | smp_rmb(); |
8ca40a70 | 990 | if (kvm->mmu_notifier_seq != mmu_seq) |
e930bffe AA |
991 | return 1; |
992 | return 0; | |
993 | } | |
994 | #endif | |
995 | ||
a725d56a | 996 | #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING |
399ec807 | 997 | |
f3f710bc CH |
998 | #ifdef CONFIG_S390 |
999 | #define KVM_MAX_IRQ_ROUTES 4096 //FIXME: we can have more than that... | |
1000 | #else | |
399ec807 | 1001 | #define KVM_MAX_IRQ_ROUTES 1024 |
f3f710bc | 1002 | #endif |
399ec807 AK |
1003 | |
1004 | int kvm_setup_default_irq_routing(struct kvm *kvm); | |
1005 | int kvm_set_irq_routing(struct kvm *kvm, | |
1006 | const struct kvm_irq_routing_entry *entries, | |
1007 | unsigned nr, | |
1008 | unsigned flags); | |
8ba918d4 | 1009 | int kvm_set_routing_entry(struct kvm_kernel_irq_routing_entry *e, |
e8cde093 | 1010 | const struct kvm_irq_routing_entry *ue); |
399ec807 AK |
1011 | void kvm_free_irq_routing(struct kvm *kvm); |
1012 | ||
1013 | #else | |
1014 | ||
1015 | static inline void kvm_free_irq_routing(struct kvm *kvm) {} | |
1016 | ||
1017 | #endif | |
1018 | ||
297e2105 PM |
1019 | int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi); |
1020 | ||
721eecbf GH |
1021 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
1022 | ||
d34e6b17 | 1023 | void kvm_eventfd_init(struct kvm *kvm); |
914daba8 AG |
1024 | int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args); |
1025 | ||
297e2105 | 1026 | #ifdef CONFIG_HAVE_KVM_IRQFD |
d4db2935 | 1027 | int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args); |
721eecbf | 1028 | void kvm_irqfd_release(struct kvm *kvm); |
9957c86d | 1029 | void kvm_irq_routing_update(struct kvm *); |
914daba8 AG |
1030 | #else |
1031 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) | |
1032 | { | |
1033 | return -EINVAL; | |
1034 | } | |
1035 | ||
1036 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
1037 | #endif | |
721eecbf GH |
1038 | |
1039 | #else | |
1040 | ||
d34e6b17 | 1041 | static inline void kvm_eventfd_init(struct kvm *kvm) {} |
bd2b53b2 | 1042 | |
d4db2935 | 1043 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) |
721eecbf GH |
1044 | { |
1045 | return -EINVAL; | |
1046 | } | |
1047 | ||
1048 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
bd2b53b2 | 1049 | |
27923eb1 | 1050 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
9957c86d | 1051 | static inline void kvm_irq_routing_update(struct kvm *kvm) |
bd2b53b2 | 1052 | { |
bd2b53b2 | 1053 | } |
27923eb1 | 1054 | #endif |
bd2b53b2 | 1055 | |
d34e6b17 GH |
1056 | static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) |
1057 | { | |
1058 | return -ENOSYS; | |
1059 | } | |
721eecbf GH |
1060 | |
1061 | #endif /* CONFIG_HAVE_KVM_EVENTFD */ | |
1062 | ||
73880c80 | 1063 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
3e515705 | 1064 | bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu); |
3e515705 | 1065 | #else |
3e515705 | 1066 | static inline bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu) { return true; } |
6aa8b732 | 1067 | #endif |
bfd99ff5 | 1068 | |
a8eeb04a AK |
1069 | static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu) |
1070 | { | |
1071 | set_bit(req, &vcpu->requests); | |
1072 | } | |
1073 | ||
a8eeb04a AK |
1074 | static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu) |
1075 | { | |
0719837c AK |
1076 | if (test_bit(req, &vcpu->requests)) { |
1077 | clear_bit(req, &vcpu->requests); | |
1078 | return true; | |
1079 | } else { | |
1080 | return false; | |
1081 | } | |
a8eeb04a AK |
1082 | } |
1083 | ||
8b415dcd GL |
1084 | extern bool kvm_rebooting; |
1085 | ||
852b6d57 SW |
1086 | struct kvm_device { |
1087 | struct kvm_device_ops *ops; | |
1088 | struct kvm *kvm; | |
852b6d57 | 1089 | void *private; |
07f0a7bd | 1090 | struct list_head vm_node; |
852b6d57 SW |
1091 | }; |
1092 | ||
1093 | /* create, destroy, and name are mandatory */ | |
1094 | struct kvm_device_ops { | |
1095 | const char *name; | |
1096 | int (*create)(struct kvm_device *dev, u32 type); | |
1097 | ||
1098 | /* | |
1099 | * Destroy is responsible for freeing dev. | |
1100 | * | |
1101 | * Destroy may be called before or after destructors are called | |
1102 | * on emulated I/O regions, depending on whether a reference is | |
1103 | * held by a vcpu or other kvm component that gets destroyed | |
1104 | * after the emulated I/O. | |
1105 | */ | |
1106 | void (*destroy)(struct kvm_device *dev); | |
1107 | ||
1108 | int (*set_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1109 | int (*get_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1110 | int (*has_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1111 | long (*ioctl)(struct kvm_device *dev, unsigned int ioctl, | |
1112 | unsigned long arg); | |
1113 | }; | |
1114 | ||
1115 | void kvm_device_get(struct kvm_device *dev); | |
1116 | void kvm_device_put(struct kvm_device *dev); | |
1117 | struct kvm_device *kvm_device_from_filp(struct file *filp); | |
d60eacb0 | 1118 | int kvm_register_device_ops(struct kvm_device_ops *ops, u32 type); |
571ee1b6 | 1119 | void kvm_unregister_device_ops(u32 type); |
852b6d57 | 1120 | |
5df554ad | 1121 | extern struct kvm_device_ops kvm_mpic_ops; |
5975a2e0 | 1122 | extern struct kvm_device_ops kvm_xics_ops; |
ea2f83a7 | 1123 | extern struct kvm_device_ops kvm_arm_vgic_v2_ops; |
a0675c25 | 1124 | extern struct kvm_device_ops kvm_arm_vgic_v3_ops; |
5df554ad | 1125 | |
4c088493 R |
1126 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
1127 | ||
1128 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
1129 | { | |
1130 | vcpu->spin_loop.in_spin_loop = val; | |
1131 | } | |
1132 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
1133 | { | |
1134 | vcpu->spin_loop.dy_eligible = val; | |
1135 | } | |
1136 | ||
1137 | #else /* !CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ | |
1138 | ||
1139 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
1140 | { | |
1141 | } | |
1142 | ||
1143 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
1144 | { | |
1145 | } | |
4c088493 | 1146 | #endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ |
bfd99ff5 | 1147 | #endif |
09a6e1f4 | 1148 |