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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 | |
cef4dea0 AK |
36 | #ifndef KVM_MMIO_SIZE |
37 | #define KVM_MMIO_SIZE 8 | |
38 | #endif | |
39 | ||
67b29204 XG |
40 | /* |
41 | * The bit 16 ~ bit 31 of kvm_memory_region::flags are internally used | |
42 | * in kvm, other bits are visible for userspace which are defined in | |
43 | * include/linux/kvm_h. | |
44 | */ | |
45 | #define KVM_MEMSLOT_INVALID (1UL << 16) | |
46 | ||
87da7e66 XG |
47 | /* Two fragments for cross MMIO pages. */ |
48 | #define KVM_MAX_MMIO_FRAGMENTS 2 | |
f78146b0 | 49 | |
9c5b1172 XG |
50 | /* |
51 | * For the normal pfn, the highest 12 bits should be zero, | |
81c52c56 XG |
52 | * so we can mask bit 62 ~ bit 52 to indicate the error pfn, |
53 | * mask bit 63 to indicate the noslot pfn. | |
9c5b1172 | 54 | */ |
81c52c56 XG |
55 | #define KVM_PFN_ERR_MASK (0x7ffULL << 52) |
56 | #define KVM_PFN_ERR_NOSLOT_MASK (0xfffULL << 52) | |
57 | #define KVM_PFN_NOSLOT (0x1ULL << 63) | |
9c5b1172 XG |
58 | |
59 | #define KVM_PFN_ERR_FAULT (KVM_PFN_ERR_MASK) | |
60 | #define KVM_PFN_ERR_HWPOISON (KVM_PFN_ERR_MASK + 1) | |
81c52c56 | 61 | #define KVM_PFN_ERR_RO_FAULT (KVM_PFN_ERR_MASK + 2) |
6c8ee57b | 62 | |
81c52c56 XG |
63 | /* |
64 | * error pfns indicate that the gfn is in slot but faild to | |
65 | * translate it to pfn on host. | |
66 | */ | |
9c5b1172 | 67 | static inline bool is_error_pfn(pfn_t pfn) |
83f09228 | 68 | { |
9c5b1172 | 69 | return !!(pfn & KVM_PFN_ERR_MASK); |
83f09228 XG |
70 | } |
71 | ||
81c52c56 XG |
72 | /* |
73 | * error_noslot pfns indicate that the gfn can not be | |
74 | * translated to pfn - it is not in slot or failed to | |
75 | * translate it to pfn. | |
76 | */ | |
77 | static inline bool is_error_noslot_pfn(pfn_t pfn) | |
83f09228 | 78 | { |
81c52c56 | 79 | return !!(pfn & KVM_PFN_ERR_NOSLOT_MASK); |
83f09228 XG |
80 | } |
81 | ||
81c52c56 XG |
82 | /* noslot pfn indicates that the gfn is not in slot. */ |
83 | static inline bool is_noslot_pfn(pfn_t pfn) | |
83f09228 | 84 | { |
81c52c56 | 85 | return pfn == KVM_PFN_NOSLOT; |
83f09228 XG |
86 | } |
87 | ||
bf640876 DD |
88 | /* |
89 | * architectures with KVM_HVA_ERR_BAD other than PAGE_OFFSET (e.g. s390) | |
90 | * provide own defines and kvm_is_error_hva | |
91 | */ | |
92 | #ifndef KVM_HVA_ERR_BAD | |
93 | ||
7068d097 XG |
94 | #define KVM_HVA_ERR_BAD (PAGE_OFFSET) |
95 | #define KVM_HVA_ERR_RO_BAD (PAGE_OFFSET + PAGE_SIZE) | |
ca3a490c XG |
96 | |
97 | static inline bool kvm_is_error_hva(unsigned long addr) | |
98 | { | |
7068d097 | 99 | return addr >= PAGE_OFFSET; |
ca3a490c XG |
100 | } |
101 | ||
bf640876 DD |
102 | #endif |
103 | ||
6cede2e6 XG |
104 | #define KVM_ERR_PTR_BAD_PAGE (ERR_PTR(-ENOENT)) |
105 | ||
9c5b1172 | 106 | static inline bool is_error_page(struct page *page) |
6cede2e6 XG |
107 | { |
108 | return IS_ERR(page); | |
109 | } | |
110 | ||
d9e368d6 AK |
111 | /* |
112 | * vcpu->requests bit members | |
113 | */ | |
3176bc3e | 114 | #define KVM_REQ_TLB_FLUSH 0 |
2f52d58c | 115 | #define KVM_REQ_MIGRATE_TIMER 1 |
b209749f | 116 | #define KVM_REQ_REPORT_TPR_ACCESS 2 |
2e53d63a | 117 | #define KVM_REQ_MMU_RELOAD 3 |
71c4dfaf | 118 | #define KVM_REQ_TRIPLE_FAULT 4 |
06e05645 | 119 | #define KVM_REQ_PENDING_TIMER 5 |
d7690175 | 120 | #define KVM_REQ_UNHALT 6 |
4731d4c7 | 121 | #define KVM_REQ_MMU_SYNC 7 |
34c238a1 | 122 | #define KVM_REQ_CLOCK_UPDATE 8 |
32f88400 | 123 | #define KVM_REQ_KICK 9 |
02daab21 | 124 | #define KVM_REQ_DEACTIVATE_FPU 10 |
3842d135 | 125 | #define KVM_REQ_EVENT 11 |
af585b92 | 126 | #define KVM_REQ_APF_HALT 12 |
c9aaa895 | 127 | #define KVM_REQ_STEAL_UPDATE 13 |
7460fb4a | 128 | #define KVM_REQ_NMI 14 |
730dca42 JK |
129 | #define KVM_REQ_PMU 15 |
130 | #define KVM_REQ_PMI 16 | |
131 | #define KVM_REQ_WATCHDOG 17 | |
132 | #define KVM_REQ_MASTERCLOCK_UPDATE 18 | |
133 | #define KVM_REQ_MCLOCK_INPROGRESS 19 | |
134 | #define KVM_REQ_EPR_EXIT 20 | |
135 | #define KVM_REQ_SCAN_IOAPIC 21 | |
0061d53d | 136 | #define KVM_REQ_GLOBAL_CLOCK_UPDATE 22 |
6aa8b732 | 137 | |
7a84428a AW |
138 | #define KVM_USERSPACE_IRQ_SOURCE_ID 0 |
139 | #define KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID 1 | |
5550af4d | 140 | |
6c474694 | 141 | struct kvm; |
6aa8b732 | 142 | struct kvm_vcpu; |
c16f862d | 143 | extern struct kmem_cache *kvm_vcpu_cache; |
6aa8b732 | 144 | |
2f303b74 | 145 | extern spinlock_t kvm_lock; |
fc1b7492 GL |
146 | extern struct list_head vm_list; |
147 | ||
743eeb0b SL |
148 | struct kvm_io_range { |
149 | gpa_t addr; | |
150 | int len; | |
151 | struct kvm_io_device *dev; | |
152 | }; | |
153 | ||
786a9f88 | 154 | #define NR_IOBUS_DEVS 1000 |
a1300716 | 155 | |
2eeb2e94 | 156 | struct kvm_io_bus { |
6ea34c9b AK |
157 | int dev_count; |
158 | int ioeventfd_count; | |
a1300716 | 159 | struct kvm_io_range range[]; |
2eeb2e94 GH |
160 | }; |
161 | ||
e93f8a0f MT |
162 | enum kvm_bus { |
163 | KVM_MMIO_BUS, | |
164 | KVM_PIO_BUS, | |
060f0ce6 | 165 | KVM_VIRTIO_CCW_NOTIFY_BUS, |
e93f8a0f MT |
166 | KVM_NR_BUSES |
167 | }; | |
168 | ||
169 | int kvm_io_bus_write(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, | |
170 | int len, const void *val); | |
126a5af5 CH |
171 | int kvm_io_bus_write_cookie(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, |
172 | int len, const void *val, long cookie); | |
e93f8a0f | 173 | int kvm_io_bus_read(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, int len, |
bda9020e | 174 | void *val); |
743eeb0b SL |
175 | int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, |
176 | int len, struct kvm_io_device *dev); | |
e93f8a0f MT |
177 | int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx, |
178 | struct kvm_io_device *dev); | |
2eeb2e94 | 179 | |
af585b92 GN |
180 | #ifdef CONFIG_KVM_ASYNC_PF |
181 | struct kvm_async_pf { | |
182 | struct work_struct work; | |
183 | struct list_head link; | |
184 | struct list_head queue; | |
185 | struct kvm_vcpu *vcpu; | |
186 | struct mm_struct *mm; | |
187 | gva_t gva; | |
188 | unsigned long addr; | |
189 | struct kvm_arch_async_pf arch; | |
f2e10669 | 190 | bool wakeup_all; |
af585b92 GN |
191 | }; |
192 | ||
193 | void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu); | |
194 | void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu); | |
e0ead41a | 195 | int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, unsigned long hva, |
af585b92 | 196 | struct kvm_arch_async_pf *arch); |
344d9588 | 197 | int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu); |
af585b92 GN |
198 | #endif |
199 | ||
6b7e2d09 XG |
200 | enum { |
201 | OUTSIDE_GUEST_MODE, | |
202 | IN_GUEST_MODE, | |
c142786c AK |
203 | EXITING_GUEST_MODE, |
204 | READING_SHADOW_PAGE_TABLES, | |
6b7e2d09 XG |
205 | }; |
206 | ||
f78146b0 AK |
207 | /* |
208 | * Sometimes a large or cross-page mmio needs to be broken up into separate | |
209 | * exits for userspace servicing. | |
210 | */ | |
211 | struct kvm_mmio_fragment { | |
212 | gpa_t gpa; | |
213 | void *data; | |
214 | unsigned len; | |
215 | }; | |
216 | ||
d17fbbf7 ZX |
217 | struct kvm_vcpu { |
218 | struct kvm *kvm; | |
31bb117e | 219 | #ifdef CONFIG_PREEMPT_NOTIFIERS |
d17fbbf7 | 220 | struct preempt_notifier preempt_notifier; |
31bb117e | 221 | #endif |
6b7e2d09 | 222 | int cpu; |
d17fbbf7 | 223 | int vcpu_id; |
6b7e2d09 XG |
224 | int srcu_idx; |
225 | int mode; | |
d17fbbf7 | 226 | unsigned long requests; |
d0bfb940 | 227 | unsigned long guest_debug; |
6b7e2d09 XG |
228 | |
229 | struct mutex mutex; | |
230 | struct kvm_run *run; | |
f656ce01 | 231 | |
d17fbbf7 | 232 | int fpu_active; |
2acf923e | 233 | int guest_fpu_loaded, guest_xcr0_loaded; |
d17fbbf7 | 234 | wait_queue_head_t wq; |
34bb10b7 | 235 | struct pid *pid; |
d17fbbf7 ZX |
236 | int sigset_active; |
237 | sigset_t sigset; | |
238 | struct kvm_vcpu_stat stat; | |
239 | ||
34c16eec | 240 | #ifdef CONFIG_HAS_IOMEM |
d17fbbf7 ZX |
241 | int mmio_needed; |
242 | int mmio_read_completed; | |
243 | int mmio_is_write; | |
f78146b0 AK |
244 | int mmio_cur_fragment; |
245 | int mmio_nr_fragments; | |
246 | struct kvm_mmio_fragment mmio_fragments[KVM_MAX_MMIO_FRAGMENTS]; | |
34c16eec | 247 | #endif |
1165f5fe | 248 | |
af585b92 GN |
249 | #ifdef CONFIG_KVM_ASYNC_PF |
250 | struct { | |
251 | u32 queued; | |
252 | struct list_head queue; | |
253 | struct list_head done; | |
254 | spinlock_t lock; | |
255 | } async_pf; | |
256 | #endif | |
257 | ||
4c088493 R |
258 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
259 | /* | |
260 | * Cpu relax intercept or pause loop exit optimization | |
261 | * in_spin_loop: set when a vcpu does a pause loop exit | |
262 | * or cpu relax intercepted. | |
263 | * dy_eligible: indicates whether vcpu is eligible for directed yield. | |
264 | */ | |
265 | struct { | |
266 | bool in_spin_loop; | |
267 | bool dy_eligible; | |
268 | } spin_loop; | |
269 | #endif | |
3a08a8f9 | 270 | bool preempted; |
d657a98e ZX |
271 | struct kvm_vcpu_arch arch; |
272 | }; | |
273 | ||
6b7e2d09 XG |
274 | static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu) |
275 | { | |
276 | return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE); | |
277 | } | |
278 | ||
660c22c4 TY |
279 | /* |
280 | * Some of the bitops functions do not support too long bitmaps. | |
281 | * This number must be determined not to exceed such limits. | |
282 | */ | |
283 | #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1) | |
284 | ||
6aa8b732 AK |
285 | struct kvm_memory_slot { |
286 | gfn_t base_gfn; | |
287 | unsigned long npages; | |
6aa8b732 | 288 | unsigned long *dirty_bitmap; |
db3fe4eb | 289 | struct kvm_arch_memory_slot arch; |
8a7ae055 | 290 | unsigned long userspace_addr; |
6104f472 | 291 | u32 flags; |
1e702d9a | 292 | short id; |
6aa8b732 AK |
293 | }; |
294 | ||
87bf6e7d TY |
295 | static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot) |
296 | { | |
297 | return ALIGN(memslot->npages, BITS_PER_LONG) / 8; | |
298 | } | |
299 | ||
84223598 CH |
300 | struct kvm_s390_adapter_int { |
301 | u64 ind_addr; | |
302 | u64 summary_addr; | |
303 | u64 ind_offset; | |
304 | u32 summary_offset; | |
305 | u32 adapter_id; | |
306 | }; | |
307 | ||
399ec807 AK |
308 | struct kvm_kernel_irq_routing_entry { |
309 | u32 gsi; | |
5116d8f6 | 310 | u32 type; |
4925663a | 311 | int (*set)(struct kvm_kernel_irq_routing_entry *e, |
aa2fbe6d YZ |
312 | struct kvm *kvm, int irq_source_id, int level, |
313 | bool line_status); | |
399ec807 AK |
314 | union { |
315 | struct { | |
316 | unsigned irqchip; | |
317 | unsigned pin; | |
318 | } irqchip; | |
79950e10 | 319 | struct msi_msg msi; |
84223598 | 320 | struct kvm_s390_adapter_int adapter; |
399ec807 | 321 | }; |
46e624b9 GN |
322 | struct hlist_node link; |
323 | }; | |
324 | ||
a725d56a | 325 | #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING |
3e71f88b | 326 | |
46e624b9 | 327 | struct kvm_irq_routing_table { |
8175e5b7 | 328 | int chip[KVM_NR_IRQCHIPS][KVM_IRQCHIP_NUM_PINS]; |
46e624b9 GN |
329 | struct kvm_kernel_irq_routing_entry *rt_entries; |
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]; | |
399ec807 AK |
336 | }; |
337 | ||
3e71f88b GN |
338 | #else |
339 | ||
340 | struct kvm_irq_routing_table {}; | |
341 | ||
342 | #endif | |
343 | ||
0743247f AW |
344 | #ifndef KVM_PRIVATE_MEM_SLOTS |
345 | #define KVM_PRIVATE_MEM_SLOTS 0 | |
346 | #endif | |
347 | ||
93a5cef0 | 348 | #ifndef KVM_MEM_SLOTS_NUM |
bbacc0c1 | 349 | #define KVM_MEM_SLOTS_NUM (KVM_USER_MEM_SLOTS + KVM_PRIVATE_MEM_SLOTS) |
93a5cef0 XG |
350 | #endif |
351 | ||
bf3e05bc XG |
352 | /* |
353 | * Note: | |
354 | * memslots are not sorted by id anymore, please use id_to_memslot() | |
355 | * to get the memslot by its id. | |
356 | */ | |
46a26bf5 | 357 | struct kvm_memslots { |
49c7754c | 358 | u64 generation; |
93a5cef0 | 359 | struct kvm_memory_slot memslots[KVM_MEM_SLOTS_NUM]; |
f85e2cb5 | 360 | /* The mapping table from slot id to the index in memslots[]. */ |
1e702d9a | 361 | short id_to_index[KVM_MEM_SLOTS_NUM]; |
46a26bf5 MT |
362 | }; |
363 | ||
6aa8b732 | 364 | struct kvm { |
aaee2c94 | 365 | spinlock_t mmu_lock; |
79fac95e | 366 | struct mutex slots_lock; |
6d4e4c4f | 367 | struct mm_struct *mm; /* userspace tied to this vm */ |
46a26bf5 | 368 | struct kvm_memslots *memslots; |
bc6678a3 | 369 | struct srcu_struct srcu; |
73880c80 GN |
370 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
371 | u32 bsp_vcpu_id; | |
73880c80 | 372 | #endif |
fb3f0f51 | 373 | struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; |
73880c80 | 374 | atomic_t online_vcpus; |
217ece61 | 375 | int last_boosted_vcpu; |
133de902 | 376 | struct list_head vm_list; |
60eead79 | 377 | struct mutex lock; |
e93f8a0f | 378 | struct kvm_io_bus *buses[KVM_NR_BUSES]; |
721eecbf GH |
379 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
380 | struct { | |
381 | spinlock_t lock; | |
382 | struct list_head items; | |
7a84428a AW |
383 | struct list_head resampler_list; |
384 | struct mutex resampler_lock; | |
721eecbf | 385 | } irqfds; |
d34e6b17 | 386 | struct list_head ioeventfds; |
721eecbf | 387 | #endif |
ba1389b7 | 388 | struct kvm_vm_stat stat; |
d69fb81f | 389 | struct kvm_arch arch; |
d39f13b0 | 390 | atomic_t users_count; |
5f94c174 | 391 | #ifdef KVM_COALESCED_MMIO_PAGE_OFFSET |
5f94c174 | 392 | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; |
2b3c246a SL |
393 | spinlock_t ring_lock; |
394 | struct list_head coalesced_zones; | |
5f94c174 | 395 | #endif |
e930bffe | 396 | |
60eead79 | 397 | struct mutex irq_lock; |
75858a84 | 398 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 MT |
399 | /* |
400 | * Update side is protected by irq_lock and, | |
401 | * if configured, irqfds.lock. | |
402 | */ | |
4b6a2872 | 403 | struct kvm_irq_routing_table __rcu *irq_routing; |
75858a84 | 404 | struct hlist_head mask_notifier_list; |
136bdfee | 405 | struct hlist_head irq_ack_notifier_list; |
75858a84 AK |
406 | #endif |
407 | ||
36c1ed82 | 408 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
e930bffe AA |
409 | struct mmu_notifier mmu_notifier; |
410 | unsigned long mmu_notifier_seq; | |
411 | long mmu_notifier_count; | |
412 | #endif | |
5befdc38 TY |
413 | /* Protected by mmu_lock */ |
414 | bool tlbs_dirty; | |
415 | ||
07f0a7bd | 416 | struct list_head devices; |
6aa8b732 AK |
417 | }; |
418 | ||
a737f256 CD |
419 | #define kvm_err(fmt, ...) \ |
420 | pr_err("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
421 | #define kvm_info(fmt, ...) \ | |
422 | pr_info("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
423 | #define kvm_debug(fmt, ...) \ | |
424 | pr_debug("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
425 | #define kvm_pr_unimpl(fmt, ...) \ | |
426 | pr_err_ratelimited("kvm [%i]: " fmt, \ | |
427 | task_tgid_nr(current), ## __VA_ARGS__) | |
f0242478 | 428 | |
a737f256 CD |
429 | /* The guest did something we don't support. */ |
430 | #define vcpu_unimpl(vcpu, fmt, ...) \ | |
431 | kvm_pr_unimpl("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__) | |
6aa8b732 | 432 | |
988a2cae GN |
433 | static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i) |
434 | { | |
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 | ||
a725d56a | 456 | #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING |
a0f155e9 CH |
457 | int kvm_irqfd_init(void); |
458 | void kvm_irqfd_exit(void); | |
459 | #else | |
460 | static inline int kvm_irqfd_init(void) | |
461 | { | |
462 | return 0; | |
463 | } | |
464 | ||
465 | static inline void kvm_irqfd_exit(void) | |
466 | { | |
467 | } | |
468 | #endif | |
0ee75bea | 469 | int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, |
c16f862d | 470 | struct module *module); |
cb498ea2 | 471 | void kvm_exit(void); |
6aa8b732 | 472 | |
d39f13b0 IE |
473 | void kvm_get_kvm(struct kvm *kvm); |
474 | void kvm_put_kvm(struct kvm *kvm); | |
475 | ||
90d83dc3 LJ |
476 | static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm) |
477 | { | |
478 | return rcu_dereference_check(kvm->memslots, | |
479 | srcu_read_lock_held(&kvm->srcu) | |
480 | || lockdep_is_held(&kvm->slots_lock)); | |
481 | } | |
482 | ||
28a37544 XG |
483 | static inline struct kvm_memory_slot * |
484 | id_to_memslot(struct kvm_memslots *slots, int id) | |
485 | { | |
f85e2cb5 XG |
486 | int index = slots->id_to_index[id]; |
487 | struct kvm_memory_slot *slot; | |
bf3e05bc | 488 | |
f85e2cb5 | 489 | slot = &slots->memslots[index]; |
bf3e05bc | 490 | |
f85e2cb5 XG |
491 | WARN_ON(slot->id != id); |
492 | return slot; | |
28a37544 XG |
493 | } |
494 | ||
74d0727c TY |
495 | /* |
496 | * KVM_SET_USER_MEMORY_REGION ioctl allows the following operations: | |
497 | * - create a new memory slot | |
498 | * - delete an existing memory slot | |
499 | * - modify an existing memory slot | |
500 | * -- move it in the guest physical memory space | |
501 | * -- just change its flags | |
502 | * | |
503 | * Since flags can be changed by some of these operations, the following | |
504 | * differentiation is the best we can do for __kvm_set_memory_region(): | |
505 | */ | |
506 | enum kvm_mr_change { | |
507 | KVM_MR_CREATE, | |
508 | KVM_MR_DELETE, | |
509 | KVM_MR_MOVE, | |
510 | KVM_MR_FLAGS_ONLY, | |
511 | }; | |
512 | ||
210c7c4d | 513 | int kvm_set_memory_region(struct kvm *kvm, |
47ae31e2 | 514 | struct kvm_userspace_memory_region *mem); |
f78e0e2e | 515 | int __kvm_set_memory_region(struct kvm *kvm, |
47ae31e2 | 516 | struct kvm_userspace_memory_region *mem); |
5587027c | 517 | void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free, |
db3fe4eb | 518 | struct kvm_memory_slot *dont); |
5587027c AK |
519 | int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, |
520 | unsigned long npages); | |
e59dbe09 | 521 | void kvm_arch_memslots_updated(struct kvm *kvm); |
f7784b8e MT |
522 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
523 | struct kvm_memory_slot *memslot, | |
f7784b8e | 524 | struct kvm_userspace_memory_region *mem, |
7b6195a9 | 525 | enum kvm_mr_change change); |
f7784b8e | 526 | void kvm_arch_commit_memory_region(struct kvm *kvm, |
0de10343 | 527 | struct kvm_userspace_memory_region *mem, |
8482644a TY |
528 | const struct kvm_memory_slot *old, |
529 | enum kvm_mr_change change); | |
db3fe4eb | 530 | bool kvm_largepages_enabled(void); |
54dee993 | 531 | void kvm_disable_largepages(void); |
2df72e9b MT |
532 | /* flush all memory translations */ |
533 | void kvm_arch_flush_shadow_all(struct kvm *kvm); | |
534 | /* flush memory translations pointing to 'slot' */ | |
535 | void kvm_arch_flush_shadow_memslot(struct kvm *kvm, | |
536 | struct kvm_memory_slot *slot); | |
a983fb23 | 537 | |
48987781 XG |
538 | int gfn_to_page_many_atomic(struct kvm *kvm, gfn_t gfn, struct page **pages, |
539 | int nr_pages); | |
540 | ||
954bbbc2 | 541 | struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); |
05da4558 | 542 | unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn); |
ba6a3541 | 543 | unsigned long gfn_to_hva_prot(struct kvm *kvm, gfn_t gfn, bool *writable); |
4d8b81ab | 544 | unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
b4231d61 IE |
545 | void kvm_release_page_clean(struct page *page); |
546 | void kvm_release_page_dirty(struct page *page); | |
35149e21 AL |
547 | void kvm_set_page_accessed(struct page *page); |
548 | ||
365fb3fd | 549 | pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn); |
612819c3 MT |
550 | pfn_t gfn_to_pfn_async(struct kvm *kvm, gfn_t gfn, bool *async, |
551 | bool write_fault, bool *writable); | |
35149e21 | 552 | pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn); |
612819c3 MT |
553 | pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault, |
554 | bool *writable); | |
d5661048 | 555 | pfn_t gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
037d92dc XG |
556 | pfn_t gfn_to_pfn_memslot_atomic(struct kvm_memory_slot *slot, gfn_t gfn); |
557 | ||
35149e21 AL |
558 | void kvm_release_pfn_clean(pfn_t pfn); |
559 | void kvm_set_pfn_dirty(pfn_t pfn); | |
560 | void kvm_set_pfn_accessed(pfn_t pfn); | |
561 | void kvm_get_pfn(pfn_t pfn); | |
562 | ||
195aefde IE |
563 | int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, |
564 | int len); | |
7ec54588 MT |
565 | int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data, |
566 | unsigned long len); | |
195aefde | 567 | int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); |
e03b644f GN |
568 | int kvm_read_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
569 | void *data, unsigned long len); | |
195aefde IE |
570 | int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, |
571 | int offset, int len); | |
572 | int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, | |
573 | unsigned long len); | |
49c7754c GN |
574 | int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
575 | void *data, unsigned long len); | |
576 | int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc, | |
8f964525 | 577 | gpa_t gpa, unsigned long len); |
195aefde IE |
578 | int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); |
579 | int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); | |
6aa8b732 | 580 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); |
e0d62c7f | 581 | int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); |
8f0b1ab6 | 582 | unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn); |
6aa8b732 AK |
583 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); |
584 | ||
8776e519 | 585 | void kvm_vcpu_block(struct kvm_vcpu *vcpu); |
b6d33834 | 586 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
41628d33 | 587 | bool kvm_vcpu_yield_to(struct kvm_vcpu *target); |
d255f4f2 | 588 | void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu); |
7702fd1f AK |
589 | void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); |
590 | void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); | |
a4ee1ca4 | 591 | |
d9e368d6 | 592 | void kvm_flush_remote_tlbs(struct kvm *kvm); |
2e53d63a | 593 | void kvm_reload_remote_mmus(struct kvm *kvm); |
d828199e | 594 | void kvm_make_mclock_inprogress_request(struct kvm *kvm); |
3d81bc7e | 595 | void kvm_make_scan_ioapic_request(struct kvm *kvm); |
6aa8b732 | 596 | |
043405e1 CO |
597 | long kvm_arch_dev_ioctl(struct file *filp, |
598 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 CO |
599 | long kvm_arch_vcpu_ioctl(struct file *filp, |
600 | unsigned int ioctl, unsigned long arg); | |
5b1c1493 | 601 | int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf); |
018d00d2 ZX |
602 | |
603 | int kvm_dev_ioctl_check_extension(long ext); | |
604 | ||
5bb064dc ZX |
605 | int kvm_get_dirty_log(struct kvm *kvm, |
606 | struct kvm_dirty_log *log, int *is_dirty); | |
607 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, | |
608 | struct kvm_dirty_log *log); | |
609 | ||
aa2fbe6d YZ |
610 | int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_level, |
611 | bool line_status); | |
1fe779f8 CO |
612 | long kvm_arch_vm_ioctl(struct file *filp, |
613 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 | 614 | |
d0752060 HB |
615 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); |
616 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); | |
617 | ||
8b006791 ZX |
618 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, |
619 | struct kvm_translation *tr); | |
620 | ||
b6c7a5dc HB |
621 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); |
622 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); | |
623 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
624 | struct kvm_sregs *sregs); | |
625 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
626 | struct kvm_sregs *sregs); | |
62d9f0db MT |
627 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
628 | struct kvm_mp_state *mp_state); | |
629 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
630 | struct kvm_mp_state *mp_state); | |
d0bfb940 JK |
631 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
632 | struct kvm_guest_debug *dbg); | |
b6c7a5dc HB |
633 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); |
634 | ||
f8c16bba ZX |
635 | int kvm_arch_init(void *opaque); |
636 | void kvm_arch_exit(void); | |
043405e1 | 637 | |
e9b11c17 ZX |
638 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); |
639 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu); | |
640 | ||
641 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu); | |
642 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
643 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); | |
644 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); | |
26e5215f | 645 | int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu); |
42897d86 | 646 | int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu); |
d40ccc62 | 647 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu); |
e9b11c17 | 648 | |
10474ae8 | 649 | int kvm_arch_hardware_enable(void *garbage); |
e9b11c17 ZX |
650 | void kvm_arch_hardware_disable(void *garbage); |
651 | int kvm_arch_hardware_setup(void); | |
652 | void kvm_arch_hardware_unsetup(void); | |
653 | void kvm_arch_check_processor_compat(void *rtn); | |
1d737c8a | 654 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu); |
b6d33834 | 655 | int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu); |
e9b11c17 | 656 | |
c1a7b32a TY |
657 | void *kvm_kvzalloc(unsigned long size); |
658 | void kvm_kvfree(const void *addr); | |
659 | ||
d89f5eff JK |
660 | #ifndef __KVM_HAVE_ARCH_VM_ALLOC |
661 | static inline struct kvm *kvm_arch_alloc_vm(void) | |
662 | { | |
663 | return kzalloc(sizeof(struct kvm), GFP_KERNEL); | |
664 | } | |
665 | ||
666 | static inline void kvm_arch_free_vm(struct kvm *kvm) | |
667 | { | |
668 | kfree(kvm); | |
669 | } | |
670 | #endif | |
671 | ||
e0f0bbc5 AW |
672 | #ifdef __KVM_HAVE_ARCH_NONCOHERENT_DMA |
673 | void kvm_arch_register_noncoherent_dma(struct kvm *kvm); | |
674 | void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm); | |
675 | bool kvm_arch_has_noncoherent_dma(struct kvm *kvm); | |
676 | #else | |
677 | static inline void kvm_arch_register_noncoherent_dma(struct kvm *kvm) | |
678 | { | |
679 | } | |
680 | ||
681 | static inline void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm) | |
682 | { | |
683 | } | |
684 | ||
685 | static inline bool kvm_arch_has_noncoherent_dma(struct kvm *kvm) | |
686 | { | |
687 | return false; | |
688 | } | |
689 | #endif | |
690 | ||
b6d33834 CD |
691 | static inline wait_queue_head_t *kvm_arch_vcpu_wq(struct kvm_vcpu *vcpu) |
692 | { | |
2246f8b5 AG |
693 | #ifdef __KVM_HAVE_ARCH_WQP |
694 | return vcpu->arch.wqp; | |
695 | #else | |
b6d33834 | 696 | return &vcpu->wq; |
b6d33834 | 697 | #endif |
2246f8b5 | 698 | } |
b6d33834 | 699 | |
e08b9637 | 700 | int kvm_arch_init_vm(struct kvm *kvm, unsigned long type); |
d19a9cd2 | 701 | void kvm_arch_destroy_vm(struct kvm *kvm); |
ad8ba2cd | 702 | void kvm_arch_sync_events(struct kvm *kvm); |
e9b11c17 | 703 | |
3d80840d | 704 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu); |
5736199a | 705 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
682c59a3 | 706 | |
a2766325 | 707 | bool kvm_is_mmio_pfn(pfn_t pfn); |
c77fb9dc | 708 | |
62c476c7 BAY |
709 | struct kvm_irq_ack_notifier { |
710 | struct hlist_node link; | |
711 | unsigned gsi; | |
712 | void (*irq_acked)(struct kvm_irq_ack_notifier *kian); | |
713 | }; | |
714 | ||
715 | struct kvm_assigned_dev_kernel { | |
716 | struct kvm_irq_ack_notifier ack_notifier; | |
62c476c7 BAY |
717 | struct list_head list; |
718 | int assigned_dev_id; | |
ab9f4ecb | 719 | int host_segnr; |
62c476c7 BAY |
720 | int host_busnr; |
721 | int host_devfn; | |
c1e01514 | 722 | unsigned int entries_nr; |
62c476c7 | 723 | int host_irq; |
defaf158 | 724 | bool host_irq_disabled; |
07700a94 | 725 | bool pci_2_3; |
c1e01514 | 726 | struct msix_entry *host_msix_entries; |
62c476c7 | 727 | int guest_irq; |
0645211c | 728 | struct msix_entry *guest_msix_entries; |
4f906c19 | 729 | unsigned long irq_requested_type; |
5550af4d | 730 | int irq_source_id; |
b653574a | 731 | int flags; |
62c476c7 BAY |
732 | struct pci_dev *dev; |
733 | struct kvm *kvm; | |
0645211c | 734 | spinlock_t intx_lock; |
cf9eeac4 | 735 | spinlock_t intx_mask_lock; |
1e001d49 | 736 | char irq_name[32]; |
f8fcfd77 | 737 | struct pci_saved_state *pci_saved_state; |
62c476c7 | 738 | }; |
75858a84 AK |
739 | |
740 | struct kvm_irq_mask_notifier { | |
741 | void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked); | |
742 | int irq; | |
743 | struct hlist_node link; | |
744 | }; | |
745 | ||
746 | void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq, | |
747 | struct kvm_irq_mask_notifier *kimn); | |
748 | void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq, | |
749 | struct kvm_irq_mask_notifier *kimn); | |
4a994358 GN |
750 | void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin, |
751 | bool mask); | |
75858a84 | 752 | |
aa2fbe6d YZ |
753 | int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level, |
754 | bool line_status); | |
01f21880 | 755 | int kvm_set_irq_inatomic(struct kvm *kvm, int irq_source_id, u32 irq, int level); |
bd2b53b2 | 756 | int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm, |
aa2fbe6d | 757 | int irq_source_id, int level, bool line_status); |
c7c9c56c | 758 | bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin); |
44882eed | 759 | void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin); |
3de42dc0 XZ |
760 | void kvm_register_irq_ack_notifier(struct kvm *kvm, |
761 | struct kvm_irq_ack_notifier *kian); | |
fa40a821 MT |
762 | void kvm_unregister_irq_ack_notifier(struct kvm *kvm, |
763 | struct kvm_irq_ack_notifier *kian); | |
5550af4d SY |
764 | int kvm_request_irq_source_id(struct kvm *kvm); |
765 | void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id); | |
62c476c7 | 766 | |
2a5bab10 | 767 | #ifdef CONFIG_KVM_DEVICE_ASSIGNMENT |
3ad26d81 | 768 | int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
32f6daad | 769 | void kvm_iommu_unmap_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
260782bc | 770 | int kvm_iommu_map_guest(struct kvm *kvm); |
62c476c7 | 771 | int kvm_iommu_unmap_guest(struct kvm *kvm); |
260782bc WH |
772 | int kvm_assign_device(struct kvm *kvm, |
773 | struct kvm_assigned_dev_kernel *assigned_dev); | |
0a920356 WH |
774 | int kvm_deassign_device(struct kvm *kvm, |
775 | struct kvm_assigned_dev_kernel *assigned_dev); | |
2a5bab10 | 776 | #else |
62c476c7 | 777 | static inline int kvm_iommu_map_pages(struct kvm *kvm, |
d7a79b6c | 778 | struct kvm_memory_slot *slot) |
62c476c7 BAY |
779 | { |
780 | return 0; | |
781 | } | |
782 | ||
32f6daad AW |
783 | static inline void kvm_iommu_unmap_pages(struct kvm *kvm, |
784 | struct kvm_memory_slot *slot) | |
785 | { | |
786 | } | |
787 | ||
62c476c7 BAY |
788 | static inline int kvm_iommu_unmap_guest(struct kvm *kvm) |
789 | { | |
790 | return 0; | |
791 | } | |
2a5bab10 | 792 | #endif |
62c476c7 | 793 | |
c11f11fc FW |
794 | static inline void kvm_guest_enter(void) |
795 | { | |
796 | unsigned long flags; | |
797 | ||
798 | BUG_ON(preemptible()); | |
799 | ||
800 | local_irq_save(flags); | |
801 | guest_enter(); | |
802 | local_irq_restore(flags); | |
803 | ||
8fa22068 GN |
804 | /* KVM does not hold any references to rcu protected data when it |
805 | * switches CPU into a guest mode. In fact switching to a guest mode | |
81e87e26 | 806 | * is very similar to exiting to userspace from rcu point of view. In |
8fa22068 GN |
807 | * addition CPU may stay in a guest mode for quite a long time (up to |
808 | * one time slice). Lets treat guest mode as quiescent state, just like | |
809 | * we do with user-mode execution. | |
810 | */ | |
811 | rcu_virt_note_context_switch(smp_processor_id()); | |
d172fcd3 LV |
812 | } |
813 | ||
814 | static inline void kvm_guest_exit(void) | |
815 | { | |
c11f11fc FW |
816 | unsigned long flags; |
817 | ||
818 | local_irq_save(flags); | |
819 | guest_exit(); | |
820 | local_irq_restore(flags); | |
d172fcd3 LV |
821 | } |
822 | ||
9d4cba7f PM |
823 | /* |
824 | * search_memslots() and __gfn_to_memslot() are here because they are | |
825 | * used in non-modular code in arch/powerpc/kvm/book3s_hv_rm_mmu.c. | |
826 | * gfn_to_memslot() itself isn't here as an inline because that would | |
827 | * bloat other code too much. | |
828 | */ | |
829 | static inline struct kvm_memory_slot * | |
830 | search_memslots(struct kvm_memslots *slots, gfn_t gfn) | |
831 | { | |
832 | struct kvm_memory_slot *memslot; | |
833 | ||
834 | kvm_for_each_memslot(memslot, slots) | |
835 | if (gfn >= memslot->base_gfn && | |
836 | gfn < memslot->base_gfn + memslot->npages) | |
837 | return memslot; | |
838 | ||
839 | return NULL; | |
840 | } | |
841 | ||
842 | static inline struct kvm_memory_slot * | |
843 | __gfn_to_memslot(struct kvm_memslots *slots, gfn_t gfn) | |
844 | { | |
845 | return search_memslots(slots, gfn); | |
846 | } | |
847 | ||
66a03505 GS |
848 | static inline unsigned long |
849 | __gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn) | |
850 | { | |
851 | return slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE; | |
852 | } | |
853 | ||
0ee8dcb8 XG |
854 | static inline int memslot_id(struct kvm *kvm, gfn_t gfn) |
855 | { | |
856 | return gfn_to_memslot(kvm, gfn)->id; | |
857 | } | |
858 | ||
d19a748b TY |
859 | static inline gfn_t |
860 | hva_to_gfn_memslot(unsigned long hva, struct kvm_memory_slot *slot) | |
887c08ac | 861 | { |
d19a748b TY |
862 | gfn_t gfn_offset = (hva - slot->userspace_addr) >> PAGE_SHIFT; |
863 | ||
864 | return slot->base_gfn + gfn_offset; | |
887c08ac XG |
865 | } |
866 | ||
1755fbcc AK |
867 | static inline gpa_t gfn_to_gpa(gfn_t gfn) |
868 | { | |
869 | return (gpa_t)gfn << PAGE_SHIFT; | |
870 | } | |
6aa8b732 | 871 | |
c30a358d JR |
872 | static inline gfn_t gpa_to_gfn(gpa_t gpa) |
873 | { | |
874 | return (gfn_t)(gpa >> PAGE_SHIFT); | |
875 | } | |
876 | ||
62c476c7 BAY |
877 | static inline hpa_t pfn_to_hpa(pfn_t pfn) |
878 | { | |
879 | return (hpa_t)pfn << PAGE_SHIFT; | |
880 | } | |
881 | ||
2f599714 | 882 | static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu) |
2f52d58c AK |
883 | { |
884 | set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests); | |
885 | } | |
886 | ||
ba1389b7 AK |
887 | enum kvm_stat_kind { |
888 | KVM_STAT_VM, | |
889 | KVM_STAT_VCPU, | |
890 | }; | |
891 | ||
417bc304 HB |
892 | struct kvm_stats_debugfs_item { |
893 | const char *name; | |
894 | int offset; | |
ba1389b7 | 895 | enum kvm_stat_kind kind; |
417bc304 HB |
896 | struct dentry *dentry; |
897 | }; | |
898 | extern struct kvm_stats_debugfs_item debugfs_entries[]; | |
76f7c879 | 899 | extern struct dentry *kvm_debugfs_dir; |
d4c9ff2d | 900 | |
36c1ed82 | 901 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
8ca40a70 | 902 | static inline int mmu_notifier_retry(struct kvm *kvm, unsigned long mmu_seq) |
e930bffe | 903 | { |
8ca40a70 | 904 | if (unlikely(kvm->mmu_notifier_count)) |
e930bffe AA |
905 | return 1; |
906 | /* | |
a355aa54 PM |
907 | * Ensure the read of mmu_notifier_count happens before the read |
908 | * of mmu_notifier_seq. This interacts with the smp_wmb() in | |
909 | * mmu_notifier_invalidate_range_end to make sure that the caller | |
910 | * either sees the old (non-zero) value of mmu_notifier_count or | |
911 | * the new (incremented) value of mmu_notifier_seq. | |
912 | * PowerPC Book3s HV KVM calls this under a per-page lock | |
913 | * rather than under kvm->mmu_lock, for scalability, so | |
914 | * can't rely on kvm->mmu_lock to keep things ordered. | |
e930bffe | 915 | */ |
a355aa54 | 916 | smp_rmb(); |
8ca40a70 | 917 | if (kvm->mmu_notifier_seq != mmu_seq) |
e930bffe AA |
918 | return 1; |
919 | return 0; | |
920 | } | |
921 | #endif | |
922 | ||
a725d56a | 923 | #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING |
399ec807 | 924 | |
f3f710bc CH |
925 | #ifdef CONFIG_S390 |
926 | #define KVM_MAX_IRQ_ROUTES 4096 //FIXME: we can have more than that... | |
927 | #else | |
399ec807 | 928 | #define KVM_MAX_IRQ_ROUTES 1024 |
f3f710bc | 929 | #endif |
399ec807 AK |
930 | |
931 | int kvm_setup_default_irq_routing(struct kvm *kvm); | |
932 | int kvm_set_irq_routing(struct kvm *kvm, | |
933 | const struct kvm_irq_routing_entry *entries, | |
934 | unsigned nr, | |
935 | unsigned flags); | |
e8cde093 AG |
936 | int kvm_set_routing_entry(struct kvm_irq_routing_table *rt, |
937 | struct kvm_kernel_irq_routing_entry *e, | |
938 | const struct kvm_irq_routing_entry *ue); | |
399ec807 AK |
939 | void kvm_free_irq_routing(struct kvm *kvm); |
940 | ||
07975ad3 JK |
941 | int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi); |
942 | ||
399ec807 AK |
943 | #else |
944 | ||
945 | static inline void kvm_free_irq_routing(struct kvm *kvm) {} | |
946 | ||
947 | #endif | |
948 | ||
721eecbf GH |
949 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
950 | ||
d34e6b17 | 951 | void kvm_eventfd_init(struct kvm *kvm); |
914daba8 AG |
952 | int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args); |
953 | ||
954 | #ifdef CONFIG_HAVE_KVM_IRQCHIP | |
d4db2935 | 955 | int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args); |
721eecbf | 956 | void kvm_irqfd_release(struct kvm *kvm); |
bd2b53b2 | 957 | void kvm_irq_routing_update(struct kvm *, struct kvm_irq_routing_table *); |
914daba8 AG |
958 | #else |
959 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) | |
960 | { | |
961 | return -EINVAL; | |
962 | } | |
963 | ||
964 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
965 | #endif | |
721eecbf GH |
966 | |
967 | #else | |
968 | ||
d34e6b17 | 969 | static inline void kvm_eventfd_init(struct kvm *kvm) {} |
bd2b53b2 | 970 | |
d4db2935 | 971 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) |
721eecbf GH |
972 | { |
973 | return -EINVAL; | |
974 | } | |
975 | ||
976 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
bd2b53b2 | 977 | |
27923eb1 | 978 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 MT |
979 | static inline void kvm_irq_routing_update(struct kvm *kvm, |
980 | struct kvm_irq_routing_table *irq_rt) | |
981 | { | |
982 | rcu_assign_pointer(kvm->irq_routing, irq_rt); | |
983 | } | |
27923eb1 | 984 | #endif |
bd2b53b2 | 985 | |
d34e6b17 GH |
986 | static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) |
987 | { | |
988 | return -ENOSYS; | |
989 | } | |
721eecbf GH |
990 | |
991 | #endif /* CONFIG_HAVE_KVM_EVENTFD */ | |
992 | ||
73880c80 | 993 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
c5af89b6 GN |
994 | static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu) |
995 | { | |
d3efc8ef | 996 | return vcpu->kvm->bsp_vcpu_id == vcpu->vcpu_id; |
c5af89b6 | 997 | } |
3e515705 AK |
998 | |
999 | bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu); | |
1000 | ||
1001 | #else | |
1002 | ||
1003 | static inline bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu) { return true; } | |
1004 | ||
6aa8b732 | 1005 | #endif |
bfd99ff5 | 1006 | |
2a5bab10 | 1007 | #ifdef CONFIG_KVM_DEVICE_ASSIGNMENT |
bfd99ff5 AK |
1008 | |
1009 | long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, | |
1010 | unsigned long arg); | |
1011 | ||
2a5bab10 AW |
1012 | void kvm_free_all_assigned_devices(struct kvm *kvm); |
1013 | ||
bfd99ff5 AK |
1014 | #else |
1015 | ||
1016 | static inline long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, | |
1017 | unsigned long arg) | |
1018 | { | |
1019 | return -ENOTTY; | |
1020 | } | |
1021 | ||
2a5bab10 AW |
1022 | static inline void kvm_free_all_assigned_devices(struct kvm *kvm) {} |
1023 | ||
73880c80 | 1024 | #endif |
bfd99ff5 | 1025 | |
a8eeb04a AK |
1026 | static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu) |
1027 | { | |
1028 | set_bit(req, &vcpu->requests); | |
1029 | } | |
1030 | ||
a8eeb04a AK |
1031 | static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu) |
1032 | { | |
0719837c AK |
1033 | if (test_bit(req, &vcpu->requests)) { |
1034 | clear_bit(req, &vcpu->requests); | |
1035 | return true; | |
1036 | } else { | |
1037 | return false; | |
1038 | } | |
a8eeb04a AK |
1039 | } |
1040 | ||
8b415dcd GL |
1041 | extern bool kvm_rebooting; |
1042 | ||
852b6d57 SW |
1043 | struct kvm_device_ops; |
1044 | ||
1045 | struct kvm_device { | |
1046 | struct kvm_device_ops *ops; | |
1047 | struct kvm *kvm; | |
852b6d57 | 1048 | void *private; |
07f0a7bd | 1049 | struct list_head vm_node; |
852b6d57 SW |
1050 | }; |
1051 | ||
1052 | /* create, destroy, and name are mandatory */ | |
1053 | struct kvm_device_ops { | |
1054 | const char *name; | |
1055 | int (*create)(struct kvm_device *dev, u32 type); | |
1056 | ||
1057 | /* | |
1058 | * Destroy is responsible for freeing dev. | |
1059 | * | |
1060 | * Destroy may be called before or after destructors are called | |
1061 | * on emulated I/O regions, depending on whether a reference is | |
1062 | * held by a vcpu or other kvm component that gets destroyed | |
1063 | * after the emulated I/O. | |
1064 | */ | |
1065 | void (*destroy)(struct kvm_device *dev); | |
1066 | ||
1067 | int (*set_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1068 | int (*get_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1069 | int (*has_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1070 | long (*ioctl)(struct kvm_device *dev, unsigned int ioctl, | |
1071 | unsigned long arg); | |
1072 | }; | |
1073 | ||
1074 | void kvm_device_get(struct kvm_device *dev); | |
1075 | void kvm_device_put(struct kvm_device *dev); | |
1076 | struct kvm_device *kvm_device_from_filp(struct file *filp); | |
1077 | ||
5df554ad | 1078 | extern struct kvm_device_ops kvm_mpic_ops; |
5975a2e0 | 1079 | extern struct kvm_device_ops kvm_xics_ops; |
ec53500f | 1080 | extern struct kvm_device_ops kvm_vfio_ops; |
7330672b | 1081 | extern struct kvm_device_ops kvm_arm_vgic_v2_ops; |
c05c4186 | 1082 | extern struct kvm_device_ops kvm_flic_ops; |
5df554ad | 1083 | |
4c088493 R |
1084 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
1085 | ||
1086 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
1087 | { | |
1088 | vcpu->spin_loop.in_spin_loop = val; | |
1089 | } | |
1090 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
1091 | { | |
1092 | vcpu->spin_loop.dy_eligible = val; | |
1093 | } | |
1094 | ||
1095 | #else /* !CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ | |
1096 | ||
1097 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
1098 | { | |
1099 | } | |
1100 | ||
1101 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
1102 | { | |
1103 | } | |
4c088493 | 1104 | #endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ |
bfd99ff5 | 1105 | #endif |
09a6e1f4 | 1106 |