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edf88417 AK |
1 | #ifndef __KVM_HOST_H |
2 | #define __KVM_HOST_H | |
6aa8b732 AK |
3 | |
4 | /* | |
5 | * This work is licensed under the terms of the GNU GPL, version 2. See | |
6 | * the COPYING file in the top-level directory. | |
7 | */ | |
8 | ||
9 | #include <linux/types.h> | |
e56a7a28 | 10 | #include <linux/hardirq.h> |
6aa8b732 AK |
11 | #include <linux/list.h> |
12 | #include <linux/mutex.h> | |
13 | #include <linux/spinlock.h> | |
06ff0d37 MR |
14 | #include <linux/signal.h> |
15 | #include <linux/sched.h> | |
187f1882 | 16 | #include <linux/bug.h> |
6aa8b732 | 17 | #include <linux/mm.h> |
b297e672 | 18 | #include <linux/mmu_notifier.h> |
15ad7146 | 19 | #include <linux/preempt.h> |
0937c48d | 20 | #include <linux/msi.h> |
d89f5eff | 21 | #include <linux/slab.h> |
bd2b53b2 | 22 | #include <linux/rcupdate.h> |
bd80158a | 23 | #include <linux/ratelimit.h> |
83f09228 | 24 | #include <linux/err.h> |
c11f11fc | 25 | #include <linux/irqflags.h> |
521921ba | 26 | #include <linux/context_tracking.h> |
1a02b270 | 27 | #include <linux/irqbypass.h> |
8577370f | 28 | #include <linux/swait.h> |
e8edc6e0 | 29 | #include <asm/signal.h> |
6aa8b732 | 30 | |
6aa8b732 | 31 | #include <linux/kvm.h> |
102d8325 | 32 | #include <linux/kvm_para.h> |
6aa8b732 | 33 | |
edf88417 | 34 | #include <linux/kvm_types.h> |
d77a39d9 | 35 | |
edf88417 | 36 | #include <asm/kvm_host.h> |
d657a98e | 37 | |
0b1b1dfd GK |
38 | #ifndef KVM_MAX_VCPU_ID |
39 | #define KVM_MAX_VCPU_ID KVM_MAX_VCPUS | |
40 | #endif | |
41 | ||
67b29204 XG |
42 | /* |
43 | * The bit 16 ~ bit 31 of kvm_memory_region::flags are internally used | |
44 | * in kvm, other bits are visible for userspace which are defined in | |
45 | * include/linux/kvm_h. | |
46 | */ | |
47 | #define KVM_MEMSLOT_INVALID (1UL << 16) | |
1050dcda | 48 | #define KVM_MEMSLOT_INCOHERENT (1UL << 17) |
67b29204 | 49 | |
87da7e66 XG |
50 | /* Two fragments for cross MMIO pages. */ |
51 | #define KVM_MAX_MMIO_FRAGMENTS 2 | |
f78146b0 | 52 | |
f481b069 PB |
53 | #ifndef KVM_ADDRESS_SPACE_NUM |
54 | #define KVM_ADDRESS_SPACE_NUM 1 | |
55 | #endif | |
56 | ||
9c5b1172 XG |
57 | /* |
58 | * For the normal pfn, the highest 12 bits should be zero, | |
81c52c56 XG |
59 | * so we can mask bit 62 ~ bit 52 to indicate the error pfn, |
60 | * mask bit 63 to indicate the noslot pfn. | |
9c5b1172 | 61 | */ |
81c52c56 XG |
62 | #define KVM_PFN_ERR_MASK (0x7ffULL << 52) |
63 | #define KVM_PFN_ERR_NOSLOT_MASK (0xfffULL << 52) | |
64 | #define KVM_PFN_NOSLOT (0x1ULL << 63) | |
9c5b1172 XG |
65 | |
66 | #define KVM_PFN_ERR_FAULT (KVM_PFN_ERR_MASK) | |
67 | #define KVM_PFN_ERR_HWPOISON (KVM_PFN_ERR_MASK + 1) | |
81c52c56 | 68 | #define KVM_PFN_ERR_RO_FAULT (KVM_PFN_ERR_MASK + 2) |
6c8ee57b | 69 | |
81c52c56 XG |
70 | /* |
71 | * error pfns indicate that the gfn is in slot but faild to | |
72 | * translate it to pfn on host. | |
73 | */ | |
ba049e93 | 74 | static inline bool is_error_pfn(kvm_pfn_t pfn) |
83f09228 | 75 | { |
9c5b1172 | 76 | return !!(pfn & KVM_PFN_ERR_MASK); |
83f09228 XG |
77 | } |
78 | ||
81c52c56 XG |
79 | /* |
80 | * error_noslot pfns indicate that the gfn can not be | |
81 | * translated to pfn - it is not in slot or failed to | |
82 | * translate it to pfn. | |
83 | */ | |
ba049e93 | 84 | static inline bool is_error_noslot_pfn(kvm_pfn_t pfn) |
83f09228 | 85 | { |
81c52c56 | 86 | return !!(pfn & KVM_PFN_ERR_NOSLOT_MASK); |
83f09228 XG |
87 | } |
88 | ||
81c52c56 | 89 | /* noslot pfn indicates that the gfn is not in slot. */ |
ba049e93 | 90 | static inline bool is_noslot_pfn(kvm_pfn_t pfn) |
83f09228 | 91 | { |
81c52c56 | 92 | return pfn == KVM_PFN_NOSLOT; |
83f09228 XG |
93 | } |
94 | ||
bf640876 DD |
95 | /* |
96 | * architectures with KVM_HVA_ERR_BAD other than PAGE_OFFSET (e.g. s390) | |
97 | * provide own defines and kvm_is_error_hva | |
98 | */ | |
99 | #ifndef KVM_HVA_ERR_BAD | |
100 | ||
7068d097 XG |
101 | #define KVM_HVA_ERR_BAD (PAGE_OFFSET) |
102 | #define KVM_HVA_ERR_RO_BAD (PAGE_OFFSET + PAGE_SIZE) | |
ca3a490c XG |
103 | |
104 | static inline bool kvm_is_error_hva(unsigned long addr) | |
105 | { | |
7068d097 | 106 | return addr >= PAGE_OFFSET; |
ca3a490c XG |
107 | } |
108 | ||
bf640876 DD |
109 | #endif |
110 | ||
6cede2e6 XG |
111 | #define KVM_ERR_PTR_BAD_PAGE (ERR_PTR(-ENOENT)) |
112 | ||
9c5b1172 | 113 | static inline bool is_error_page(struct page *page) |
6cede2e6 XG |
114 | { |
115 | return IS_ERR(page); | |
116 | } | |
117 | ||
d9e368d6 | 118 | /* |
2860c4b1 PB |
119 | * Architecture-independent vcpu->requests bit members |
120 | * Bits 4-7 are reserved for more arch-independent bits. | |
d9e368d6 | 121 | */ |
3176bc3e | 122 | #define KVM_REQ_TLB_FLUSH 0 |
6662ba34 PB |
123 | #define KVM_REQ_MMU_RELOAD 1 |
124 | #define KVM_REQ_PENDING_TIMER 2 | |
125 | #define KVM_REQ_UNHALT 3 | |
0cd31043 | 126 | |
7a84428a AW |
127 | #define KVM_USERSPACE_IRQ_SOURCE_ID 0 |
128 | #define KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID 1 | |
5550af4d | 129 | |
c16f862d | 130 | extern struct kmem_cache *kvm_vcpu_cache; |
6aa8b732 | 131 | |
2f303b74 | 132 | extern spinlock_t kvm_lock; |
fc1b7492 GL |
133 | extern struct list_head vm_list; |
134 | ||
743eeb0b SL |
135 | struct kvm_io_range { |
136 | gpa_t addr; | |
137 | int len; | |
138 | struct kvm_io_device *dev; | |
139 | }; | |
140 | ||
786a9f88 | 141 | #define NR_IOBUS_DEVS 1000 |
a1300716 | 142 | |
2eeb2e94 | 143 | struct kvm_io_bus { |
6ea34c9b AK |
144 | int dev_count; |
145 | int ioeventfd_count; | |
a1300716 | 146 | struct kvm_io_range range[]; |
2eeb2e94 GH |
147 | }; |
148 | ||
e93f8a0f MT |
149 | enum kvm_bus { |
150 | KVM_MMIO_BUS, | |
151 | KVM_PIO_BUS, | |
060f0ce6 | 152 | KVM_VIRTIO_CCW_NOTIFY_BUS, |
68c3b4d1 | 153 | KVM_FAST_MMIO_BUS, |
e93f8a0f MT |
154 | KVM_NR_BUSES |
155 | }; | |
156 | ||
e32edf4f | 157 | int kvm_io_bus_write(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr, |
e93f8a0f | 158 | int len, const void *val); |
e32edf4f NN |
159 | int kvm_io_bus_write_cookie(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, |
160 | gpa_t addr, int len, const void *val, long cookie); | |
161 | int kvm_io_bus_read(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr, | |
162 | int len, void *val); | |
743eeb0b SL |
163 | int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, |
164 | int len, struct kvm_io_device *dev); | |
e93f8a0f MT |
165 | int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx, |
166 | struct kvm_io_device *dev); | |
8a39d006 AP |
167 | struct kvm_io_device *kvm_io_bus_get_dev(struct kvm *kvm, enum kvm_bus bus_idx, |
168 | gpa_t addr); | |
2eeb2e94 | 169 | |
af585b92 GN |
170 | #ifdef CONFIG_KVM_ASYNC_PF |
171 | struct kvm_async_pf { | |
172 | struct work_struct work; | |
173 | struct list_head link; | |
174 | struct list_head queue; | |
175 | struct kvm_vcpu *vcpu; | |
176 | struct mm_struct *mm; | |
177 | gva_t gva; | |
178 | unsigned long addr; | |
179 | struct kvm_arch_async_pf arch; | |
f2e10669 | 180 | bool wakeup_all; |
af585b92 GN |
181 | }; |
182 | ||
183 | void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu); | |
184 | void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu); | |
e0ead41a | 185 | int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, unsigned long hva, |
af585b92 | 186 | struct kvm_arch_async_pf *arch); |
344d9588 | 187 | int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu); |
af585b92 GN |
188 | #endif |
189 | ||
6b7e2d09 XG |
190 | enum { |
191 | OUTSIDE_GUEST_MODE, | |
192 | IN_GUEST_MODE, | |
c142786c AK |
193 | EXITING_GUEST_MODE, |
194 | READING_SHADOW_PAGE_TABLES, | |
6b7e2d09 XG |
195 | }; |
196 | ||
f78146b0 AK |
197 | /* |
198 | * Sometimes a large or cross-page mmio needs to be broken up into separate | |
199 | * exits for userspace servicing. | |
200 | */ | |
201 | struct kvm_mmio_fragment { | |
202 | gpa_t gpa; | |
203 | void *data; | |
204 | unsigned len; | |
205 | }; | |
206 | ||
d17fbbf7 ZX |
207 | struct kvm_vcpu { |
208 | struct kvm *kvm; | |
31bb117e | 209 | #ifdef CONFIG_PREEMPT_NOTIFIERS |
d17fbbf7 | 210 | struct preempt_notifier preempt_notifier; |
31bb117e | 211 | #endif |
6b7e2d09 | 212 | int cpu; |
d17fbbf7 | 213 | int vcpu_id; |
6b7e2d09 XG |
214 | int srcu_idx; |
215 | int mode; | |
d17fbbf7 | 216 | unsigned long requests; |
d0bfb940 | 217 | unsigned long guest_debug; |
6b7e2d09 | 218 | |
bf9f6ac8 FW |
219 | int pre_pcpu; |
220 | struct list_head blocked_vcpu_list; | |
221 | ||
6b7e2d09 XG |
222 | struct mutex mutex; |
223 | struct kvm_run *run; | |
f656ce01 | 224 | |
d17fbbf7 | 225 | int fpu_active; |
2acf923e | 226 | int guest_fpu_loaded, guest_xcr0_loaded; |
653f52c3 | 227 | unsigned char fpu_counter; |
8577370f | 228 | struct swait_queue_head wq; |
34bb10b7 | 229 | struct pid *pid; |
d17fbbf7 ZX |
230 | int sigset_active; |
231 | sigset_t sigset; | |
232 | struct kvm_vcpu_stat stat; | |
19020f8a | 233 | unsigned int halt_poll_ns; |
3491caf2 | 234 | bool valid_wakeup; |
d17fbbf7 | 235 | |
34c16eec | 236 | #ifdef CONFIG_HAS_IOMEM |
d17fbbf7 ZX |
237 | int mmio_needed; |
238 | int mmio_read_completed; | |
239 | int mmio_is_write; | |
f78146b0 AK |
240 | int mmio_cur_fragment; |
241 | int mmio_nr_fragments; | |
242 | struct kvm_mmio_fragment mmio_fragments[KVM_MAX_MMIO_FRAGMENTS]; | |
34c16eec | 243 | #endif |
1165f5fe | 244 | |
af585b92 GN |
245 | #ifdef CONFIG_KVM_ASYNC_PF |
246 | struct { | |
247 | u32 queued; | |
248 | struct list_head queue; | |
249 | struct list_head done; | |
250 | spinlock_t lock; | |
251 | } async_pf; | |
252 | #endif | |
253 | ||
4c088493 R |
254 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
255 | /* | |
256 | * Cpu relax intercept or pause loop exit optimization | |
257 | * in_spin_loop: set when a vcpu does a pause loop exit | |
258 | * or cpu relax intercepted. | |
259 | * dy_eligible: indicates whether vcpu is eligible for directed yield. | |
260 | */ | |
261 | struct { | |
262 | bool in_spin_loop; | |
263 | bool dy_eligible; | |
264 | } spin_loop; | |
265 | #endif | |
3a08a8f9 | 266 | bool preempted; |
d657a98e ZX |
267 | struct kvm_vcpu_arch arch; |
268 | }; | |
269 | ||
6b7e2d09 XG |
270 | static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu) |
271 | { | |
272 | return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE); | |
273 | } | |
274 | ||
660c22c4 TY |
275 | /* |
276 | * Some of the bitops functions do not support too long bitmaps. | |
277 | * This number must be determined not to exceed such limits. | |
278 | */ | |
279 | #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1) | |
280 | ||
6aa8b732 AK |
281 | struct kvm_memory_slot { |
282 | gfn_t base_gfn; | |
283 | unsigned long npages; | |
6aa8b732 | 284 | unsigned long *dirty_bitmap; |
db3fe4eb | 285 | struct kvm_arch_memory_slot arch; |
8a7ae055 | 286 | unsigned long userspace_addr; |
6104f472 | 287 | u32 flags; |
1e702d9a | 288 | short id; |
6aa8b732 AK |
289 | }; |
290 | ||
87bf6e7d TY |
291 | static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot) |
292 | { | |
293 | return ALIGN(memslot->npages, BITS_PER_LONG) / 8; | |
294 | } | |
295 | ||
84223598 CH |
296 | struct kvm_s390_adapter_int { |
297 | u64 ind_addr; | |
298 | u64 summary_addr; | |
299 | u64 ind_offset; | |
300 | u32 summary_offset; | |
301 | u32 adapter_id; | |
302 | }; | |
303 | ||
5c919412 AS |
304 | struct kvm_hv_sint { |
305 | u32 vcpu; | |
306 | u32 sint; | |
307 | }; | |
308 | ||
399ec807 AK |
309 | struct kvm_kernel_irq_routing_entry { |
310 | u32 gsi; | |
5116d8f6 | 311 | u32 type; |
4925663a | 312 | int (*set)(struct kvm_kernel_irq_routing_entry *e, |
aa2fbe6d YZ |
313 | struct kvm *kvm, int irq_source_id, int level, |
314 | bool line_status); | |
399ec807 AK |
315 | union { |
316 | struct { | |
317 | unsigned irqchip; | |
318 | unsigned pin; | |
319 | } irqchip; | |
79950e10 | 320 | struct msi_msg msi; |
84223598 | 321 | struct kvm_s390_adapter_int adapter; |
5c919412 | 322 | struct kvm_hv_sint hv_sint; |
399ec807 | 323 | }; |
46e624b9 GN |
324 | struct hlist_node link; |
325 | }; | |
326 | ||
b053b2ae SR |
327 | #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING |
328 | struct kvm_irq_routing_table { | |
329 | int chip[KVM_NR_IRQCHIPS][KVM_IRQCHIP_NUM_PINS]; | |
330 | u32 nr_rt_entries; | |
331 | /* | |
332 | * Array indexed by gsi. Each entry contains list of irq chips | |
333 | * the gsi is connected to. | |
334 | */ | |
335 | struct hlist_head map[0]; | |
336 | }; | |
337 | #endif | |
338 | ||
0743247f AW |
339 | #ifndef KVM_PRIVATE_MEM_SLOTS |
340 | #define KVM_PRIVATE_MEM_SLOTS 0 | |
341 | #endif | |
342 | ||
93a5cef0 | 343 | #ifndef KVM_MEM_SLOTS_NUM |
bbacc0c1 | 344 | #define KVM_MEM_SLOTS_NUM (KVM_USER_MEM_SLOTS + KVM_PRIVATE_MEM_SLOTS) |
93a5cef0 XG |
345 | #endif |
346 | ||
f481b069 PB |
347 | #ifndef __KVM_VCPU_MULTIPLE_ADDRESS_SPACE |
348 | static inline int kvm_arch_vcpu_memslots_id(struct kvm_vcpu *vcpu) | |
349 | { | |
350 | return 0; | |
351 | } | |
352 | #endif | |
353 | ||
bf3e05bc XG |
354 | /* |
355 | * Note: | |
356 | * memslots are not sorted by id anymore, please use id_to_memslot() | |
357 | * to get the memslot by its id. | |
358 | */ | |
46a26bf5 | 359 | struct kvm_memslots { |
49c7754c | 360 | u64 generation; |
93a5cef0 | 361 | struct kvm_memory_slot memslots[KVM_MEM_SLOTS_NUM]; |
f85e2cb5 | 362 | /* The mapping table from slot id to the index in memslots[]. */ |
1e702d9a | 363 | short id_to_index[KVM_MEM_SLOTS_NUM]; |
d4ae84a0 | 364 | atomic_t lru_slot; |
9c1a5d38 | 365 | int used_slots; |
46a26bf5 MT |
366 | }; |
367 | ||
6aa8b732 | 368 | struct kvm { |
aaee2c94 | 369 | spinlock_t mmu_lock; |
79fac95e | 370 | struct mutex slots_lock; |
6d4e4c4f | 371 | struct mm_struct *mm; /* userspace tied to this vm */ |
f481b069 | 372 | struct kvm_memslots *memslots[KVM_ADDRESS_SPACE_NUM]; |
bc6678a3 | 373 | struct srcu_struct srcu; |
719d93cd | 374 | struct srcu_struct irq_srcu; |
fb3f0f51 | 375 | struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; |
6c7caebc PB |
376 | |
377 | /* | |
378 | * created_vcpus is protected by kvm->lock, and is incremented | |
379 | * at the beginning of KVM_CREATE_VCPU. online_vcpus is only | |
380 | * incremented after storing the kvm_vcpu pointer in vcpus, | |
381 | * and is accessed atomically. | |
382 | */ | |
73880c80 | 383 | atomic_t online_vcpus; |
6c7caebc | 384 | int created_vcpus; |
217ece61 | 385 | int last_boosted_vcpu; |
133de902 | 386 | struct list_head vm_list; |
60eead79 | 387 | struct mutex lock; |
e93f8a0f | 388 | struct kvm_io_bus *buses[KVM_NR_BUSES]; |
721eecbf GH |
389 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
390 | struct { | |
391 | spinlock_t lock; | |
392 | struct list_head items; | |
7a84428a AW |
393 | struct list_head resampler_list; |
394 | struct mutex resampler_lock; | |
721eecbf | 395 | } irqfds; |
d34e6b17 | 396 | struct list_head ioeventfds; |
721eecbf | 397 | #endif |
ba1389b7 | 398 | struct kvm_vm_stat stat; |
d69fb81f | 399 | struct kvm_arch arch; |
d39f13b0 | 400 | atomic_t users_count; |
5f94c174 | 401 | #ifdef KVM_COALESCED_MMIO_PAGE_OFFSET |
5f94c174 | 402 | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; |
2b3c246a SL |
403 | spinlock_t ring_lock; |
404 | struct list_head coalesced_zones; | |
5f94c174 | 405 | #endif |
e930bffe | 406 | |
60eead79 | 407 | struct mutex irq_lock; |
75858a84 | 408 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 | 409 | /* |
9957c86d | 410 | * Update side is protected by irq_lock. |
bd2b53b2 | 411 | */ |
4b6a2872 | 412 | struct kvm_irq_routing_table __rcu *irq_routing; |
c77dcacb PB |
413 | #endif |
414 | #ifdef CONFIG_HAVE_KVM_IRQFD | |
136bdfee | 415 | struct hlist_head irq_ack_notifier_list; |
75858a84 AK |
416 | #endif |
417 | ||
36c1ed82 | 418 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
e930bffe AA |
419 | struct mmu_notifier mmu_notifier; |
420 | unsigned long mmu_notifier_seq; | |
421 | long mmu_notifier_count; | |
422 | #endif | |
a086f6a1 | 423 | long tlbs_dirty; |
07f0a7bd | 424 | struct list_head devices; |
536a6f88 JF |
425 | struct dentry *debugfs_dentry; |
426 | struct kvm_stat_data **debugfs_stat_data; | |
6aa8b732 AK |
427 | }; |
428 | ||
a737f256 CD |
429 | #define kvm_err(fmt, ...) \ |
430 | pr_err("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
431 | #define kvm_info(fmt, ...) \ | |
432 | pr_info("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
433 | #define kvm_debug(fmt, ...) \ | |
434 | pr_debug("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
435 | #define kvm_pr_unimpl(fmt, ...) \ | |
436 | pr_err_ratelimited("kvm [%i]: " fmt, \ | |
437 | task_tgid_nr(current), ## __VA_ARGS__) | |
f0242478 | 438 | |
a737f256 CD |
439 | /* The guest did something we don't support. */ |
440 | #define vcpu_unimpl(vcpu, fmt, ...) \ | |
671d9ab3 BP |
441 | kvm_pr_unimpl("vcpu%i, guest rIP: 0x%lx " fmt, \ |
442 | (vcpu)->vcpu_id, kvm_rip_read(vcpu), ## __VA_ARGS__) | |
6aa8b732 | 443 | |
ee86dbc6 AS |
444 | #define vcpu_debug(vcpu, fmt, ...) \ |
445 | kvm_debug("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__) | |
765eaa0f AS |
446 | #define vcpu_err(vcpu, fmt, ...) \ |
447 | kvm_err("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__) | |
ee86dbc6 | 448 | |
988a2cae GN |
449 | static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i) |
450 | { | |
dd489240 PB |
451 | /* Pairs with smp_wmb() in kvm_vm_ioctl_create_vcpu, in case |
452 | * the caller has read kvm->online_vcpus before (as is the case | |
453 | * for kvm_for_each_vcpu, for example). | |
454 | */ | |
988a2cae GN |
455 | smp_rmb(); |
456 | return kvm->vcpus[i]; | |
457 | } | |
458 | ||
459 | #define kvm_for_each_vcpu(idx, vcpup, kvm) \ | |
b42fc3cb JM |
460 | for (idx = 0; \ |
461 | idx < atomic_read(&kvm->online_vcpus) && \ | |
462 | (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \ | |
463 | idx++) | |
988a2cae | 464 | |
db27a7a3 DH |
465 | static inline struct kvm_vcpu *kvm_get_vcpu_by_id(struct kvm *kvm, int id) |
466 | { | |
9b9e3fc4 | 467 | struct kvm_vcpu *vcpu = NULL; |
db27a7a3 DH |
468 | int i; |
469 | ||
9b9e3fc4 | 470 | if (id < 0) |
c896939f | 471 | return NULL; |
9b9e3fc4 GK |
472 | if (id < KVM_MAX_VCPUS) |
473 | vcpu = kvm_get_vcpu(kvm, id); | |
c896939f DH |
474 | if (vcpu && vcpu->vcpu_id == id) |
475 | return vcpu; | |
db27a7a3 DH |
476 | kvm_for_each_vcpu(i, vcpu, kvm) |
477 | if (vcpu->vcpu_id == id) | |
478 | return vcpu; | |
479 | return NULL; | |
480 | } | |
481 | ||
be6ba0f0 XG |
482 | #define kvm_for_each_memslot(memslot, slots) \ |
483 | for (memslot = &slots->memslots[0]; \ | |
bf3e05bc XG |
484 | memslot < slots->memslots + KVM_MEM_SLOTS_NUM && memslot->npages;\ |
485 | memslot++) | |
be6ba0f0 | 486 | |
fb3f0f51 RR |
487 | int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id); |
488 | void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); | |
489 | ||
9fc77441 | 490 | int __must_check vcpu_load(struct kvm_vcpu *vcpu); |
313a3dc7 CO |
491 | void vcpu_put(struct kvm_vcpu *vcpu); |
492 | ||
6ef768fa PB |
493 | #ifdef __KVM_HAVE_IOAPIC |
494 | void kvm_vcpu_request_scan_ioapic(struct kvm *kvm); | |
abdb080f | 495 | void kvm_arch_post_irq_routing_update(struct kvm *kvm); |
6ef768fa PB |
496 | #else |
497 | static inline void kvm_vcpu_request_scan_ioapic(struct kvm *kvm) | |
498 | { | |
499 | } | |
abdb080f | 500 | static inline void kvm_arch_post_irq_routing_update(struct kvm *kvm) |
b053b2ae SR |
501 | { |
502 | } | |
6ef768fa PB |
503 | #endif |
504 | ||
297e2105 | 505 | #ifdef CONFIG_HAVE_KVM_IRQFD |
a0f155e9 CH |
506 | int kvm_irqfd_init(void); |
507 | void kvm_irqfd_exit(void); | |
508 | #else | |
509 | static inline int kvm_irqfd_init(void) | |
510 | { | |
511 | return 0; | |
512 | } | |
513 | ||
514 | static inline void kvm_irqfd_exit(void) | |
515 | { | |
516 | } | |
517 | #endif | |
0ee75bea | 518 | int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, |
c16f862d | 519 | struct module *module); |
cb498ea2 | 520 | void kvm_exit(void); |
6aa8b732 | 521 | |
d39f13b0 IE |
522 | void kvm_get_kvm(struct kvm *kvm); |
523 | void kvm_put_kvm(struct kvm *kvm); | |
524 | ||
f481b069 | 525 | static inline struct kvm_memslots *__kvm_memslots(struct kvm *kvm, int as_id) |
90d83dc3 | 526 | { |
f481b069 | 527 | return rcu_dereference_check(kvm->memslots[as_id], |
90d83dc3 LJ |
528 | srcu_read_lock_held(&kvm->srcu) |
529 | || lockdep_is_held(&kvm->slots_lock)); | |
530 | } | |
531 | ||
f481b069 PB |
532 | static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm) |
533 | { | |
534 | return __kvm_memslots(kvm, 0); | |
535 | } | |
536 | ||
8e73485c PB |
537 | static inline struct kvm_memslots *kvm_vcpu_memslots(struct kvm_vcpu *vcpu) |
538 | { | |
f481b069 PB |
539 | int as_id = kvm_arch_vcpu_memslots_id(vcpu); |
540 | ||
541 | return __kvm_memslots(vcpu->kvm, as_id); | |
8e73485c PB |
542 | } |
543 | ||
28a37544 XG |
544 | static inline struct kvm_memory_slot * |
545 | id_to_memslot(struct kvm_memslots *slots, int id) | |
546 | { | |
f85e2cb5 XG |
547 | int index = slots->id_to_index[id]; |
548 | struct kvm_memory_slot *slot; | |
bf3e05bc | 549 | |
f85e2cb5 | 550 | slot = &slots->memslots[index]; |
bf3e05bc | 551 | |
f85e2cb5 XG |
552 | WARN_ON(slot->id != id); |
553 | return slot; | |
28a37544 XG |
554 | } |
555 | ||
74d0727c TY |
556 | /* |
557 | * KVM_SET_USER_MEMORY_REGION ioctl allows the following operations: | |
558 | * - create a new memory slot | |
559 | * - delete an existing memory slot | |
560 | * - modify an existing memory slot | |
561 | * -- move it in the guest physical memory space | |
562 | * -- just change its flags | |
563 | * | |
564 | * Since flags can be changed by some of these operations, the following | |
565 | * differentiation is the best we can do for __kvm_set_memory_region(): | |
566 | */ | |
567 | enum kvm_mr_change { | |
568 | KVM_MR_CREATE, | |
569 | KVM_MR_DELETE, | |
570 | KVM_MR_MOVE, | |
571 | KVM_MR_FLAGS_ONLY, | |
572 | }; | |
573 | ||
210c7c4d | 574 | int kvm_set_memory_region(struct kvm *kvm, |
09170a49 | 575 | const struct kvm_userspace_memory_region *mem); |
f78e0e2e | 576 | int __kvm_set_memory_region(struct kvm *kvm, |
09170a49 | 577 | const struct kvm_userspace_memory_region *mem); |
5587027c | 578 | void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free, |
db3fe4eb | 579 | struct kvm_memory_slot *dont); |
5587027c AK |
580 | int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, |
581 | unsigned long npages); | |
15f46015 | 582 | void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots); |
f7784b8e MT |
583 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
584 | struct kvm_memory_slot *memslot, | |
09170a49 | 585 | const struct kvm_userspace_memory_region *mem, |
7b6195a9 | 586 | enum kvm_mr_change change); |
f7784b8e | 587 | void kvm_arch_commit_memory_region(struct kvm *kvm, |
09170a49 | 588 | const struct kvm_userspace_memory_region *mem, |
8482644a | 589 | const struct kvm_memory_slot *old, |
f36f3f28 | 590 | const struct kvm_memory_slot *new, |
8482644a | 591 | enum kvm_mr_change change); |
db3fe4eb | 592 | bool kvm_largepages_enabled(void); |
54dee993 | 593 | void kvm_disable_largepages(void); |
2df72e9b MT |
594 | /* flush all memory translations */ |
595 | void kvm_arch_flush_shadow_all(struct kvm *kvm); | |
596 | /* flush memory translations pointing to 'slot' */ | |
597 | void kvm_arch_flush_shadow_memslot(struct kvm *kvm, | |
598 | struct kvm_memory_slot *slot); | |
a983fb23 | 599 | |
d9ef13c2 PB |
600 | int gfn_to_page_many_atomic(struct kvm_memory_slot *slot, gfn_t gfn, |
601 | struct page **pages, int nr_pages); | |
48987781 | 602 | |
954bbbc2 | 603 | struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); |
05da4558 | 604 | unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn); |
ba6a3541 | 605 | unsigned long gfn_to_hva_prot(struct kvm *kvm, gfn_t gfn, bool *writable); |
4d8b81ab | 606 | unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
64d83126 CD |
607 | unsigned long gfn_to_hva_memslot_prot(struct kvm_memory_slot *slot, gfn_t gfn, |
608 | bool *writable); | |
b4231d61 IE |
609 | void kvm_release_page_clean(struct page *page); |
610 | void kvm_release_page_dirty(struct page *page); | |
35149e21 AL |
611 | void kvm_set_page_accessed(struct page *page); |
612 | ||
ba049e93 DW |
613 | kvm_pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn); |
614 | kvm_pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn); | |
615 | kvm_pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault, | |
612819c3 | 616 | bool *writable); |
ba049e93 DW |
617 | kvm_pfn_t gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
618 | kvm_pfn_t gfn_to_pfn_memslot_atomic(struct kvm_memory_slot *slot, gfn_t gfn); | |
619 | kvm_pfn_t __gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn, | |
620 | bool atomic, bool *async, bool write_fault, | |
621 | bool *writable); | |
037d92dc | 622 | |
ba049e93 DW |
623 | void kvm_release_pfn_clean(kvm_pfn_t pfn); |
624 | void kvm_set_pfn_dirty(kvm_pfn_t pfn); | |
625 | void kvm_set_pfn_accessed(kvm_pfn_t pfn); | |
626 | void kvm_get_pfn(kvm_pfn_t pfn); | |
35149e21 | 627 | |
195aefde IE |
628 | int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, |
629 | int len); | |
7ec54588 MT |
630 | int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data, |
631 | unsigned long len); | |
195aefde | 632 | int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); |
e03b644f GN |
633 | int kvm_read_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
634 | void *data, unsigned long len); | |
195aefde IE |
635 | int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, |
636 | int offset, int len); | |
637 | int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, | |
638 | unsigned long len); | |
49c7754c GN |
639 | int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
640 | void *data, unsigned long len); | |
641 | int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc, | |
8f964525 | 642 | gpa_t gpa, unsigned long len); |
195aefde IE |
643 | int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); |
644 | int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); | |
6aa8b732 | 645 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); |
33e94154 | 646 | bool kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); |
8f0b1ab6 | 647 | unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn); |
6aa8b732 AK |
648 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); |
649 | ||
8e73485c PB |
650 | struct kvm_memslots *kvm_vcpu_memslots(struct kvm_vcpu *vcpu); |
651 | struct kvm_memory_slot *kvm_vcpu_gfn_to_memslot(struct kvm_vcpu *vcpu, gfn_t gfn); | |
ba049e93 DW |
652 | kvm_pfn_t kvm_vcpu_gfn_to_pfn_atomic(struct kvm_vcpu *vcpu, gfn_t gfn); |
653 | kvm_pfn_t kvm_vcpu_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn); | |
8e73485c PB |
654 | struct page *kvm_vcpu_gfn_to_page(struct kvm_vcpu *vcpu, gfn_t gfn); |
655 | unsigned long kvm_vcpu_gfn_to_hva(struct kvm_vcpu *vcpu, gfn_t gfn); | |
656 | unsigned long kvm_vcpu_gfn_to_hva_prot(struct kvm_vcpu *vcpu, gfn_t gfn, bool *writable); | |
657 | int kvm_vcpu_read_guest_page(struct kvm_vcpu *vcpu, gfn_t gfn, void *data, int offset, | |
658 | int len); | |
659 | int kvm_vcpu_read_guest_atomic(struct kvm_vcpu *vcpu, gpa_t gpa, void *data, | |
660 | unsigned long len); | |
661 | int kvm_vcpu_read_guest(struct kvm_vcpu *vcpu, gpa_t gpa, void *data, | |
662 | unsigned long len); | |
663 | int kvm_vcpu_write_guest_page(struct kvm_vcpu *vcpu, gfn_t gfn, const void *data, | |
664 | int offset, int len); | |
665 | int kvm_vcpu_write_guest(struct kvm_vcpu *vcpu, gpa_t gpa, const void *data, | |
666 | unsigned long len); | |
667 | void kvm_vcpu_mark_page_dirty(struct kvm_vcpu *vcpu, gfn_t gfn); | |
668 | ||
8776e519 | 669 | void kvm_vcpu_block(struct kvm_vcpu *vcpu); |
3217f7c2 CD |
670 | void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu); |
671 | void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu); | |
dd1a4cc1 | 672 | void kvm_vcpu_wake_up(struct kvm_vcpu *vcpu); |
b6d33834 | 673 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
fa93384f | 674 | int kvm_vcpu_yield_to(struct kvm_vcpu *target); |
d255f4f2 | 675 | void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu); |
7702fd1f AK |
676 | void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); |
677 | void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); | |
a4ee1ca4 | 678 | |
d9e368d6 | 679 | void kvm_flush_remote_tlbs(struct kvm *kvm); |
2e53d63a | 680 | void kvm_reload_remote_mmus(struct kvm *kvm); |
445b8236 | 681 | bool kvm_make_all_cpus_request(struct kvm *kvm, unsigned int req); |
6aa8b732 | 682 | |
043405e1 CO |
683 | long kvm_arch_dev_ioctl(struct file *filp, |
684 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 CO |
685 | long kvm_arch_vcpu_ioctl(struct file *filp, |
686 | unsigned int ioctl, unsigned long arg); | |
5b1c1493 | 687 | int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf); |
018d00d2 | 688 | |
784aa3d7 | 689 | int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext); |
018d00d2 | 690 | |
5bb064dc ZX |
691 | int kvm_get_dirty_log(struct kvm *kvm, |
692 | struct kvm_dirty_log *log, int *is_dirty); | |
ba0513b5 MS |
693 | |
694 | int kvm_get_dirty_log_protect(struct kvm *kvm, | |
695 | struct kvm_dirty_log *log, bool *is_dirty); | |
696 | ||
3b0f1d01 | 697 | void kvm_arch_mmu_enable_log_dirty_pt_masked(struct kvm *kvm, |
ba0513b5 MS |
698 | struct kvm_memory_slot *slot, |
699 | gfn_t gfn_offset, | |
700 | unsigned long mask); | |
701 | ||
5bb064dc ZX |
702 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, |
703 | struct kvm_dirty_log *log); | |
704 | ||
aa2fbe6d YZ |
705 | int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_level, |
706 | bool line_status); | |
1fe779f8 CO |
707 | long kvm_arch_vm_ioctl(struct file *filp, |
708 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 | 709 | |
d0752060 HB |
710 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); |
711 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); | |
712 | ||
8b006791 ZX |
713 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, |
714 | struct kvm_translation *tr); | |
715 | ||
b6c7a5dc HB |
716 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); |
717 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); | |
718 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
719 | struct kvm_sregs *sregs); | |
720 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
721 | struct kvm_sregs *sregs); | |
62d9f0db MT |
722 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
723 | struct kvm_mp_state *mp_state); | |
724 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
725 | struct kvm_mp_state *mp_state); | |
d0bfb940 JK |
726 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
727 | struct kvm_guest_debug *dbg); | |
b6c7a5dc HB |
728 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); |
729 | ||
f8c16bba ZX |
730 | int kvm_arch_init(void *opaque); |
731 | void kvm_arch_exit(void); | |
043405e1 | 732 | |
e9b11c17 ZX |
733 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); |
734 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu); | |
735 | ||
e790d9ef RK |
736 | void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu); |
737 | ||
e9b11c17 ZX |
738 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu); |
739 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
740 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); | |
741 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); | |
26e5215f | 742 | int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu); |
31928aa5 | 743 | void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu); |
d40ccc62 | 744 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu); |
e9b11c17 | 745 | |
13a34e06 RK |
746 | int kvm_arch_hardware_enable(void); |
747 | void kvm_arch_hardware_disable(void); | |
e9b11c17 ZX |
748 | int kvm_arch_hardware_setup(void); |
749 | void kvm_arch_hardware_unsetup(void); | |
750 | void kvm_arch_check_processor_compat(void *rtn); | |
1d737c8a | 751 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu); |
b6d33834 | 752 | int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu); |
e9b11c17 | 753 | |
c1a7b32a | 754 | void *kvm_kvzalloc(unsigned long size); |
c1a7b32a | 755 | |
d89f5eff JK |
756 | #ifndef __KVM_HAVE_ARCH_VM_ALLOC |
757 | static inline struct kvm *kvm_arch_alloc_vm(void) | |
758 | { | |
759 | return kzalloc(sizeof(struct kvm), GFP_KERNEL); | |
760 | } | |
761 | ||
762 | static inline void kvm_arch_free_vm(struct kvm *kvm) | |
763 | { | |
764 | kfree(kvm); | |
765 | } | |
766 | #endif | |
767 | ||
e0f0bbc5 AW |
768 | #ifdef __KVM_HAVE_ARCH_NONCOHERENT_DMA |
769 | void kvm_arch_register_noncoherent_dma(struct kvm *kvm); | |
770 | void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm); | |
771 | bool kvm_arch_has_noncoherent_dma(struct kvm *kvm); | |
772 | #else | |
773 | static inline void kvm_arch_register_noncoherent_dma(struct kvm *kvm) | |
774 | { | |
775 | } | |
776 | ||
777 | static inline void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm) | |
778 | { | |
779 | } | |
780 | ||
781 | static inline bool kvm_arch_has_noncoherent_dma(struct kvm *kvm) | |
782 | { | |
783 | return false; | |
784 | } | |
785 | #endif | |
5544eb9b PB |
786 | #ifdef __KVM_HAVE_ARCH_ASSIGNED_DEVICE |
787 | void kvm_arch_start_assignment(struct kvm *kvm); | |
788 | void kvm_arch_end_assignment(struct kvm *kvm); | |
789 | bool kvm_arch_has_assigned_device(struct kvm *kvm); | |
790 | #else | |
791 | static inline void kvm_arch_start_assignment(struct kvm *kvm) | |
792 | { | |
793 | } | |
794 | ||
795 | static inline void kvm_arch_end_assignment(struct kvm *kvm) | |
796 | { | |
797 | } | |
798 | ||
799 | static inline bool kvm_arch_has_assigned_device(struct kvm *kvm) | |
800 | { | |
801 | return false; | |
802 | } | |
803 | #endif | |
e0f0bbc5 | 804 | |
8577370f | 805 | static inline struct swait_queue_head *kvm_arch_vcpu_wq(struct kvm_vcpu *vcpu) |
b6d33834 | 806 | { |
2246f8b5 AG |
807 | #ifdef __KVM_HAVE_ARCH_WQP |
808 | return vcpu->arch.wqp; | |
809 | #else | |
b6d33834 | 810 | return &vcpu->wq; |
b6d33834 | 811 | #endif |
2246f8b5 | 812 | } |
b6d33834 | 813 | |
01c94e64 EA |
814 | #ifdef __KVM_HAVE_ARCH_INTC_INITIALIZED |
815 | /* | |
816 | * returns true if the virtual interrupt controller is initialized and | |
817 | * ready to accept virtual IRQ. On some architectures the virtual interrupt | |
818 | * controller is dynamically instantiated and this is not always true. | |
819 | */ | |
820 | bool kvm_arch_intc_initialized(struct kvm *kvm); | |
821 | #else | |
822 | static inline bool kvm_arch_intc_initialized(struct kvm *kvm) | |
823 | { | |
824 | return true; | |
825 | } | |
826 | #endif | |
827 | ||
e08b9637 | 828 | int kvm_arch_init_vm(struct kvm *kvm, unsigned long type); |
d19a9cd2 | 829 | void kvm_arch_destroy_vm(struct kvm *kvm); |
ad8ba2cd | 830 | void kvm_arch_sync_events(struct kvm *kvm); |
e9b11c17 | 831 | |
3d80840d | 832 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu); |
5736199a | 833 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
682c59a3 | 834 | |
ba049e93 | 835 | bool kvm_is_reserved_pfn(kvm_pfn_t pfn); |
c77fb9dc | 836 | |
62c476c7 BAY |
837 | struct kvm_irq_ack_notifier { |
838 | struct hlist_node link; | |
839 | unsigned gsi; | |
840 | void (*irq_acked)(struct kvm_irq_ack_notifier *kian); | |
841 | }; | |
842 | ||
9957c86d PM |
843 | int kvm_irq_map_gsi(struct kvm *kvm, |
844 | struct kvm_kernel_irq_routing_entry *entries, int gsi); | |
845 | int kvm_irq_map_chip_pin(struct kvm *kvm, unsigned irqchip, unsigned pin); | |
8ba918d4 | 846 | |
aa2fbe6d YZ |
847 | int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level, |
848 | bool line_status); | |
bd2b53b2 | 849 | int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm, |
aa2fbe6d | 850 | int irq_source_id, int level, bool line_status); |
b97e6de9 PB |
851 | int kvm_arch_set_irq_inatomic(struct kvm_kernel_irq_routing_entry *e, |
852 | struct kvm *kvm, int irq_source_id, | |
853 | int level, bool line_status); | |
c7c9c56c | 854 | bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin); |
ba1aefcd | 855 | void kvm_notify_acked_gsi(struct kvm *kvm, int gsi); |
44882eed | 856 | void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin); |
3de42dc0 XZ |
857 | void kvm_register_irq_ack_notifier(struct kvm *kvm, |
858 | struct kvm_irq_ack_notifier *kian); | |
fa40a821 MT |
859 | void kvm_unregister_irq_ack_notifier(struct kvm *kvm, |
860 | struct kvm_irq_ack_notifier *kian); | |
5550af4d SY |
861 | int kvm_request_irq_source_id(struct kvm *kvm); |
862 | void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id); | |
62c476c7 | 863 | |
2a5bab10 | 864 | #ifdef CONFIG_KVM_DEVICE_ASSIGNMENT |
3ad26d81 | 865 | int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
32f6daad | 866 | void kvm_iommu_unmap_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
2a5bab10 | 867 | #else |
62c476c7 | 868 | static inline int kvm_iommu_map_pages(struct kvm *kvm, |
d7a79b6c | 869 | struct kvm_memory_slot *slot) |
62c476c7 BAY |
870 | { |
871 | return 0; | |
872 | } | |
873 | ||
32f6daad AW |
874 | static inline void kvm_iommu_unmap_pages(struct kvm *kvm, |
875 | struct kvm_memory_slot *slot) | |
876 | { | |
877 | } | |
2a5bab10 | 878 | #endif |
62c476c7 | 879 | |
0097d12e CB |
880 | /* must be called with irqs disabled */ |
881 | static inline void __kvm_guest_enter(void) | |
c11f11fc | 882 | { |
c11f11fc | 883 | guest_enter(); |
8fa22068 GN |
884 | /* KVM does not hold any references to rcu protected data when it |
885 | * switches CPU into a guest mode. In fact switching to a guest mode | |
81e87e26 | 886 | * is very similar to exiting to userspace from rcu point of view. In |
8fa22068 GN |
887 | * addition CPU may stay in a guest mode for quite a long time (up to |
888 | * one time slice). Lets treat guest mode as quiescent state, just like | |
889 | * we do with user-mode execution. | |
890 | */ | |
126a6a54 RR |
891 | if (!context_tracking_cpu_is_enabled()) |
892 | rcu_virt_note_context_switch(smp_processor_id()); | |
d172fcd3 LV |
893 | } |
894 | ||
0097d12e CB |
895 | /* must be called with irqs disabled */ |
896 | static inline void __kvm_guest_exit(void) | |
897 | { | |
898 | guest_exit(); | |
899 | } | |
900 | ||
901 | static inline void kvm_guest_enter(void) | |
902 | { | |
903 | unsigned long flags; | |
904 | ||
905 | local_irq_save(flags); | |
906 | __kvm_guest_enter(); | |
907 | local_irq_restore(flags); | |
908 | } | |
909 | ||
d172fcd3 LV |
910 | static inline void kvm_guest_exit(void) |
911 | { | |
c11f11fc FW |
912 | unsigned long flags; |
913 | ||
914 | local_irq_save(flags); | |
0097d12e | 915 | __kvm_guest_exit(); |
c11f11fc | 916 | local_irq_restore(flags); |
d172fcd3 LV |
917 | } |
918 | ||
9d4cba7f PM |
919 | /* |
920 | * search_memslots() and __gfn_to_memslot() are here because they are | |
921 | * used in non-modular code in arch/powerpc/kvm/book3s_hv_rm_mmu.c. | |
922 | * gfn_to_memslot() itself isn't here as an inline because that would | |
923 | * bloat other code too much. | |
924 | */ | |
925 | static inline struct kvm_memory_slot * | |
926 | search_memslots(struct kvm_memslots *slots, gfn_t gfn) | |
927 | { | |
9c1a5d38 | 928 | int start = 0, end = slots->used_slots; |
d4ae84a0 | 929 | int slot = atomic_read(&slots->lru_slot); |
9c1a5d38 IM |
930 | struct kvm_memory_slot *memslots = slots->memslots; |
931 | ||
932 | if (gfn >= memslots[slot].base_gfn && | |
933 | gfn < memslots[slot].base_gfn + memslots[slot].npages) | |
934 | return &memslots[slot]; | |
935 | ||
936 | while (start < end) { | |
937 | slot = start + (end - start) / 2; | |
938 | ||
939 | if (gfn >= memslots[slot].base_gfn) | |
940 | end = slot; | |
941 | else | |
942 | start = slot + 1; | |
943 | } | |
944 | ||
945 | if (gfn >= memslots[start].base_gfn && | |
946 | gfn < memslots[start].base_gfn + memslots[start].npages) { | |
947 | atomic_set(&slots->lru_slot, start); | |
948 | return &memslots[start]; | |
949 | } | |
9d4cba7f PM |
950 | |
951 | return NULL; | |
952 | } | |
953 | ||
954 | static inline struct kvm_memory_slot * | |
955 | __gfn_to_memslot(struct kvm_memslots *slots, gfn_t gfn) | |
956 | { | |
957 | return search_memslots(slots, gfn); | |
958 | } | |
959 | ||
66a03505 GS |
960 | static inline unsigned long |
961 | __gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn) | |
962 | { | |
963 | return slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE; | |
964 | } | |
965 | ||
0ee8dcb8 XG |
966 | static inline int memslot_id(struct kvm *kvm, gfn_t gfn) |
967 | { | |
968 | return gfn_to_memslot(kvm, gfn)->id; | |
969 | } | |
970 | ||
d19a748b TY |
971 | static inline gfn_t |
972 | hva_to_gfn_memslot(unsigned long hva, struct kvm_memory_slot *slot) | |
887c08ac | 973 | { |
d19a748b TY |
974 | gfn_t gfn_offset = (hva - slot->userspace_addr) >> PAGE_SHIFT; |
975 | ||
976 | return slot->base_gfn + gfn_offset; | |
887c08ac XG |
977 | } |
978 | ||
1755fbcc AK |
979 | static inline gpa_t gfn_to_gpa(gfn_t gfn) |
980 | { | |
981 | return (gpa_t)gfn << PAGE_SHIFT; | |
982 | } | |
6aa8b732 | 983 | |
c30a358d JR |
984 | static inline gfn_t gpa_to_gfn(gpa_t gpa) |
985 | { | |
986 | return (gfn_t)(gpa >> PAGE_SHIFT); | |
987 | } | |
988 | ||
ba049e93 | 989 | static inline hpa_t pfn_to_hpa(kvm_pfn_t pfn) |
62c476c7 BAY |
990 | { |
991 | return (hpa_t)pfn << PAGE_SHIFT; | |
992 | } | |
993 | ||
dfeec843 HC |
994 | static inline bool kvm_is_error_gpa(struct kvm *kvm, gpa_t gpa) |
995 | { | |
996 | unsigned long hva = gfn_to_hva(kvm, gpa_to_gfn(gpa)); | |
997 | ||
998 | return kvm_is_error_hva(hva); | |
999 | } | |
1000 | ||
ba1389b7 AK |
1001 | enum kvm_stat_kind { |
1002 | KVM_STAT_VM, | |
1003 | KVM_STAT_VCPU, | |
1004 | }; | |
1005 | ||
536a6f88 JF |
1006 | struct kvm_stat_data { |
1007 | int offset; | |
1008 | struct kvm *kvm; | |
1009 | }; | |
1010 | ||
417bc304 HB |
1011 | struct kvm_stats_debugfs_item { |
1012 | const char *name; | |
1013 | int offset; | |
ba1389b7 | 1014 | enum kvm_stat_kind kind; |
417bc304 HB |
1015 | }; |
1016 | extern struct kvm_stats_debugfs_item debugfs_entries[]; | |
76f7c879 | 1017 | extern struct dentry *kvm_debugfs_dir; |
d4c9ff2d | 1018 | |
36c1ed82 | 1019 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
8ca40a70 | 1020 | static inline int mmu_notifier_retry(struct kvm *kvm, unsigned long mmu_seq) |
e930bffe | 1021 | { |
8ca40a70 | 1022 | if (unlikely(kvm->mmu_notifier_count)) |
e930bffe AA |
1023 | return 1; |
1024 | /* | |
a355aa54 PM |
1025 | * Ensure the read of mmu_notifier_count happens before the read |
1026 | * of mmu_notifier_seq. This interacts with the smp_wmb() in | |
1027 | * mmu_notifier_invalidate_range_end to make sure that the caller | |
1028 | * either sees the old (non-zero) value of mmu_notifier_count or | |
1029 | * the new (incremented) value of mmu_notifier_seq. | |
1030 | * PowerPC Book3s HV KVM calls this under a per-page lock | |
1031 | * rather than under kvm->mmu_lock, for scalability, so | |
1032 | * can't rely on kvm->mmu_lock to keep things ordered. | |
e930bffe | 1033 | */ |
a355aa54 | 1034 | smp_rmb(); |
8ca40a70 | 1035 | if (kvm->mmu_notifier_seq != mmu_seq) |
e930bffe AA |
1036 | return 1; |
1037 | return 0; | |
1038 | } | |
1039 | #endif | |
1040 | ||
a725d56a | 1041 | #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING |
399ec807 | 1042 | |
f3f710bc CH |
1043 | #ifdef CONFIG_S390 |
1044 | #define KVM_MAX_IRQ_ROUTES 4096 //FIXME: we can have more than that... | |
1045 | #else | |
399ec807 | 1046 | #define KVM_MAX_IRQ_ROUTES 1024 |
f3f710bc | 1047 | #endif |
399ec807 AK |
1048 | |
1049 | int kvm_setup_default_irq_routing(struct kvm *kvm); | |
49df6397 | 1050 | int kvm_setup_empty_irq_routing(struct kvm *kvm); |
399ec807 AK |
1051 | int kvm_set_irq_routing(struct kvm *kvm, |
1052 | const struct kvm_irq_routing_entry *entries, | |
1053 | unsigned nr, | |
1054 | unsigned flags); | |
8ba918d4 | 1055 | int kvm_set_routing_entry(struct kvm_kernel_irq_routing_entry *e, |
e8cde093 | 1056 | const struct kvm_irq_routing_entry *ue); |
399ec807 AK |
1057 | void kvm_free_irq_routing(struct kvm *kvm); |
1058 | ||
1059 | #else | |
1060 | ||
1061 | static inline void kvm_free_irq_routing(struct kvm *kvm) {} | |
1062 | ||
1063 | #endif | |
1064 | ||
297e2105 PM |
1065 | int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi); |
1066 | ||
721eecbf GH |
1067 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
1068 | ||
d34e6b17 | 1069 | void kvm_eventfd_init(struct kvm *kvm); |
914daba8 AG |
1070 | int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args); |
1071 | ||
297e2105 | 1072 | #ifdef CONFIG_HAVE_KVM_IRQFD |
d4db2935 | 1073 | int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args); |
721eecbf | 1074 | void kvm_irqfd_release(struct kvm *kvm); |
9957c86d | 1075 | void kvm_irq_routing_update(struct kvm *); |
914daba8 AG |
1076 | #else |
1077 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) | |
1078 | { | |
1079 | return -EINVAL; | |
1080 | } | |
1081 | ||
1082 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
1083 | #endif | |
721eecbf GH |
1084 | |
1085 | #else | |
1086 | ||
d34e6b17 | 1087 | static inline void kvm_eventfd_init(struct kvm *kvm) {} |
bd2b53b2 | 1088 | |
d4db2935 | 1089 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) |
721eecbf GH |
1090 | { |
1091 | return -EINVAL; | |
1092 | } | |
1093 | ||
1094 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
bd2b53b2 | 1095 | |
27923eb1 | 1096 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
9957c86d | 1097 | static inline void kvm_irq_routing_update(struct kvm *kvm) |
bd2b53b2 | 1098 | { |
bd2b53b2 | 1099 | } |
27923eb1 | 1100 | #endif |
abdb080f | 1101 | void kvm_arch_irq_routing_update(struct kvm *kvm); |
bd2b53b2 | 1102 | |
d34e6b17 GH |
1103 | static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) |
1104 | { | |
1105 | return -ENOSYS; | |
1106 | } | |
721eecbf GH |
1107 | |
1108 | #endif /* CONFIG_HAVE_KVM_EVENTFD */ | |
1109 | ||
a8eeb04a AK |
1110 | static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu) |
1111 | { | |
2e4682ba PB |
1112 | /* |
1113 | * Ensure the rest of the request is published to kvm_check_request's | |
1114 | * caller. Paired with the smp_mb__after_atomic in kvm_check_request. | |
1115 | */ | |
1116 | smp_wmb(); | |
a8eeb04a AK |
1117 | set_bit(req, &vcpu->requests); |
1118 | } | |
1119 | ||
a8eeb04a AK |
1120 | static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu) |
1121 | { | |
0719837c AK |
1122 | if (test_bit(req, &vcpu->requests)) { |
1123 | clear_bit(req, &vcpu->requests); | |
2e4682ba PB |
1124 | |
1125 | /* | |
1126 | * Ensure the rest of the request is visible to kvm_check_request's | |
1127 | * caller. Paired with the smp_wmb in kvm_make_request. | |
1128 | */ | |
1129 | smp_mb__after_atomic(); | |
0719837c AK |
1130 | return true; |
1131 | } else { | |
1132 | return false; | |
1133 | } | |
a8eeb04a AK |
1134 | } |
1135 | ||
8b415dcd GL |
1136 | extern bool kvm_rebooting; |
1137 | ||
852b6d57 SW |
1138 | struct kvm_device { |
1139 | struct kvm_device_ops *ops; | |
1140 | struct kvm *kvm; | |
852b6d57 | 1141 | void *private; |
07f0a7bd | 1142 | struct list_head vm_node; |
852b6d57 SW |
1143 | }; |
1144 | ||
1145 | /* create, destroy, and name are mandatory */ | |
1146 | struct kvm_device_ops { | |
1147 | const char *name; | |
1148 | int (*create)(struct kvm_device *dev, u32 type); | |
1149 | ||
1150 | /* | |
1151 | * Destroy is responsible for freeing dev. | |
1152 | * | |
1153 | * Destroy may be called before or after destructors are called | |
1154 | * on emulated I/O regions, depending on whether a reference is | |
1155 | * held by a vcpu or other kvm component that gets destroyed | |
1156 | * after the emulated I/O. | |
1157 | */ | |
1158 | void (*destroy)(struct kvm_device *dev); | |
1159 | ||
1160 | int (*set_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1161 | int (*get_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1162 | int (*has_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1163 | long (*ioctl)(struct kvm_device *dev, unsigned int ioctl, | |
1164 | unsigned long arg); | |
1165 | }; | |
1166 | ||
1167 | void kvm_device_get(struct kvm_device *dev); | |
1168 | void kvm_device_put(struct kvm_device *dev); | |
1169 | struct kvm_device *kvm_device_from_filp(struct file *filp); | |
d60eacb0 | 1170 | int kvm_register_device_ops(struct kvm_device_ops *ops, u32 type); |
571ee1b6 | 1171 | void kvm_unregister_device_ops(u32 type); |
852b6d57 | 1172 | |
5df554ad | 1173 | extern struct kvm_device_ops kvm_mpic_ops; |
5975a2e0 | 1174 | extern struct kvm_device_ops kvm_xics_ops; |
ea2f83a7 | 1175 | extern struct kvm_device_ops kvm_arm_vgic_v2_ops; |
a0675c25 | 1176 | extern struct kvm_device_ops kvm_arm_vgic_v3_ops; |
5df554ad | 1177 | |
4c088493 R |
1178 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
1179 | ||
1180 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
1181 | { | |
1182 | vcpu->spin_loop.in_spin_loop = val; | |
1183 | } | |
1184 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
1185 | { | |
1186 | vcpu->spin_loop.dy_eligible = val; | |
1187 | } | |
1188 | ||
1189 | #else /* !CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ | |
1190 | ||
1191 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
1192 | { | |
1193 | } | |
1194 | ||
1195 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
1196 | { | |
1197 | } | |
4c088493 | 1198 | #endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ |
1a02b270 EA |
1199 | |
1200 | #ifdef CONFIG_HAVE_KVM_IRQ_BYPASS | |
14717e20 | 1201 | bool kvm_arch_has_irq_bypass(void); |
1a02b270 EA |
1202 | int kvm_arch_irq_bypass_add_producer(struct irq_bypass_consumer *, |
1203 | struct irq_bypass_producer *); | |
1204 | void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer *, | |
1205 | struct irq_bypass_producer *); | |
1206 | void kvm_arch_irq_bypass_stop(struct irq_bypass_consumer *); | |
1207 | void kvm_arch_irq_bypass_start(struct irq_bypass_consumer *); | |
f70c20aa FW |
1208 | int kvm_arch_update_irqfd_routing(struct kvm *kvm, unsigned int host_irq, |
1209 | uint32_t guest_irq, bool set); | |
1a02b270 | 1210 | #endif /* CONFIG_HAVE_KVM_IRQ_BYPASS */ |
35181e86 | 1211 | |
3491caf2 CB |
1212 | #ifdef CONFIG_HAVE_KVM_INVALID_WAKEUPS |
1213 | /* If we wakeup during the poll time, was it a sucessful poll? */ | |
1214 | static inline bool vcpu_valid_wakeup(struct kvm_vcpu *vcpu) | |
1215 | { | |
1216 | return vcpu->valid_wakeup; | |
1217 | } | |
1218 | ||
1219 | #else | |
1220 | static inline bool vcpu_valid_wakeup(struct kvm_vcpu *vcpu) | |
1221 | { | |
1222 | return true; | |
1223 | } | |
1224 | #endif /* CONFIG_HAVE_KVM_INVALID_WAKEUPS */ | |
1225 | ||
bfd99ff5 | 1226 | #endif |