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edf88417 AK |
1 | #ifndef __KVM_HOST_H |
2 | #define __KVM_HOST_H | |
6aa8b732 AK |
3 | |
4 | /* | |
5 | * This work is licensed under the terms of the GNU GPL, version 2. See | |
6 | * the COPYING file in the top-level directory. | |
7 | */ | |
8 | ||
9 | #include <linux/types.h> | |
e56a7a28 | 10 | #include <linux/hardirq.h> |
6aa8b732 AK |
11 | #include <linux/list.h> |
12 | #include <linux/mutex.h> | |
13 | #include <linux/spinlock.h> | |
06ff0d37 MR |
14 | #include <linux/signal.h> |
15 | #include <linux/sched.h> | |
187f1882 | 16 | #include <linux/bug.h> |
6aa8b732 | 17 | #include <linux/mm.h> |
b297e672 | 18 | #include <linux/mmu_notifier.h> |
15ad7146 | 19 | #include <linux/preempt.h> |
0937c48d | 20 | #include <linux/msi.h> |
d89f5eff | 21 | #include <linux/slab.h> |
bd2b53b2 | 22 | #include <linux/rcupdate.h> |
bd80158a | 23 | #include <linux/ratelimit.h> |
83f09228 | 24 | #include <linux/err.h> |
c11f11fc | 25 | #include <linux/irqflags.h> |
521921ba | 26 | #include <linux/context_tracking.h> |
e8edc6e0 | 27 | #include <asm/signal.h> |
6aa8b732 | 28 | |
6aa8b732 | 29 | #include <linux/kvm.h> |
102d8325 | 30 | #include <linux/kvm_para.h> |
6aa8b732 | 31 | |
edf88417 | 32 | #include <linux/kvm_types.h> |
d77a39d9 | 33 | |
edf88417 | 34 | #include <asm/kvm_host.h> |
d657a98e | 35 | |
67b29204 XG |
36 | /* |
37 | * The bit 16 ~ bit 31 of kvm_memory_region::flags are internally used | |
38 | * in kvm, other bits are visible for userspace which are defined in | |
39 | * include/linux/kvm_h. | |
40 | */ | |
41 | #define KVM_MEMSLOT_INVALID (1UL << 16) | |
1050dcda | 42 | #define KVM_MEMSLOT_INCOHERENT (1UL << 17) |
67b29204 | 43 | |
87da7e66 XG |
44 | /* Two fragments for cross MMIO pages. */ |
45 | #define KVM_MAX_MMIO_FRAGMENTS 2 | |
f78146b0 | 46 | |
9c5b1172 XG |
47 | /* |
48 | * For the normal pfn, the highest 12 bits should be zero, | |
81c52c56 XG |
49 | * so we can mask bit 62 ~ bit 52 to indicate the error pfn, |
50 | * mask bit 63 to indicate the noslot pfn. | |
9c5b1172 | 51 | */ |
81c52c56 XG |
52 | #define KVM_PFN_ERR_MASK (0x7ffULL << 52) |
53 | #define KVM_PFN_ERR_NOSLOT_MASK (0xfffULL << 52) | |
54 | #define KVM_PFN_NOSLOT (0x1ULL << 63) | |
9c5b1172 XG |
55 | |
56 | #define KVM_PFN_ERR_FAULT (KVM_PFN_ERR_MASK) | |
57 | #define KVM_PFN_ERR_HWPOISON (KVM_PFN_ERR_MASK + 1) | |
81c52c56 | 58 | #define KVM_PFN_ERR_RO_FAULT (KVM_PFN_ERR_MASK + 2) |
6c8ee57b | 59 | |
81c52c56 XG |
60 | /* |
61 | * error pfns indicate that the gfn is in slot but faild to | |
62 | * translate it to pfn on host. | |
63 | */ | |
9c5b1172 | 64 | static inline bool is_error_pfn(pfn_t pfn) |
83f09228 | 65 | { |
9c5b1172 | 66 | return !!(pfn & KVM_PFN_ERR_MASK); |
83f09228 XG |
67 | } |
68 | ||
81c52c56 XG |
69 | /* |
70 | * error_noslot pfns indicate that the gfn can not be | |
71 | * translated to pfn - it is not in slot or failed to | |
72 | * translate it to pfn. | |
73 | */ | |
74 | static inline bool is_error_noslot_pfn(pfn_t pfn) | |
83f09228 | 75 | { |
81c52c56 | 76 | return !!(pfn & KVM_PFN_ERR_NOSLOT_MASK); |
83f09228 XG |
77 | } |
78 | ||
81c52c56 XG |
79 | /* noslot pfn indicates that the gfn is not in slot. */ |
80 | static inline bool is_noslot_pfn(pfn_t pfn) | |
83f09228 | 81 | { |
81c52c56 | 82 | return pfn == KVM_PFN_NOSLOT; |
83f09228 XG |
83 | } |
84 | ||
bf640876 DD |
85 | /* |
86 | * architectures with KVM_HVA_ERR_BAD other than PAGE_OFFSET (e.g. s390) | |
87 | * provide own defines and kvm_is_error_hva | |
88 | */ | |
89 | #ifndef KVM_HVA_ERR_BAD | |
90 | ||
7068d097 XG |
91 | #define KVM_HVA_ERR_BAD (PAGE_OFFSET) |
92 | #define KVM_HVA_ERR_RO_BAD (PAGE_OFFSET + PAGE_SIZE) | |
ca3a490c XG |
93 | |
94 | static inline bool kvm_is_error_hva(unsigned long addr) | |
95 | { | |
7068d097 | 96 | return addr >= PAGE_OFFSET; |
ca3a490c XG |
97 | } |
98 | ||
bf640876 DD |
99 | #endif |
100 | ||
6cede2e6 XG |
101 | #define KVM_ERR_PTR_BAD_PAGE (ERR_PTR(-ENOENT)) |
102 | ||
9c5b1172 | 103 | static inline bool is_error_page(struct page *page) |
6cede2e6 XG |
104 | { |
105 | return IS_ERR(page); | |
106 | } | |
107 | ||
d9e368d6 AK |
108 | /* |
109 | * vcpu->requests bit members | |
110 | */ | |
3176bc3e | 111 | #define KVM_REQ_TLB_FLUSH 0 |
2f52d58c | 112 | #define KVM_REQ_MIGRATE_TIMER 1 |
b209749f | 113 | #define KVM_REQ_REPORT_TPR_ACCESS 2 |
2e53d63a | 114 | #define KVM_REQ_MMU_RELOAD 3 |
71c4dfaf | 115 | #define KVM_REQ_TRIPLE_FAULT 4 |
06e05645 | 116 | #define KVM_REQ_PENDING_TIMER 5 |
d7690175 | 117 | #define KVM_REQ_UNHALT 6 |
4731d4c7 | 118 | #define KVM_REQ_MMU_SYNC 7 |
34c238a1 | 119 | #define KVM_REQ_CLOCK_UPDATE 8 |
32f88400 | 120 | #define KVM_REQ_KICK 9 |
02daab21 | 121 | #define KVM_REQ_DEACTIVATE_FPU 10 |
3842d135 | 122 | #define KVM_REQ_EVENT 11 |
af585b92 | 123 | #define KVM_REQ_APF_HALT 12 |
c9aaa895 | 124 | #define KVM_REQ_STEAL_UPDATE 13 |
7460fb4a | 125 | #define KVM_REQ_NMI 14 |
730dca42 JK |
126 | #define KVM_REQ_PMU 15 |
127 | #define KVM_REQ_PMI 16 | |
128 | #define KVM_REQ_WATCHDOG 17 | |
129 | #define KVM_REQ_MASTERCLOCK_UPDATE 18 | |
130 | #define KVM_REQ_MCLOCK_INPROGRESS 19 | |
131 | #define KVM_REQ_EPR_EXIT 20 | |
132 | #define KVM_REQ_SCAN_IOAPIC 21 | |
0061d53d | 133 | #define KVM_REQ_GLOBAL_CLOCK_UPDATE 22 |
8ad35755 DH |
134 | #define KVM_REQ_ENABLE_IBS 23 |
135 | #define KVM_REQ_DISABLE_IBS 24 | |
4256f43f | 136 | #define KVM_REQ_APIC_PAGE_RELOAD 25 |
64d60670 | 137 | #define KVM_REQ_SMI 26 |
6aa8b732 | 138 | |
7a84428a AW |
139 | #define KVM_USERSPACE_IRQ_SOURCE_ID 0 |
140 | #define KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID 1 | |
5550af4d | 141 | |
c16f862d | 142 | extern struct kmem_cache *kvm_vcpu_cache; |
6aa8b732 | 143 | |
2f303b74 | 144 | extern spinlock_t kvm_lock; |
fc1b7492 GL |
145 | extern struct list_head vm_list; |
146 | ||
743eeb0b SL |
147 | struct kvm_io_range { |
148 | gpa_t addr; | |
149 | int len; | |
150 | struct kvm_io_device *dev; | |
151 | }; | |
152 | ||
786a9f88 | 153 | #define NR_IOBUS_DEVS 1000 |
a1300716 | 154 | |
2eeb2e94 | 155 | struct kvm_io_bus { |
6ea34c9b AK |
156 | int dev_count; |
157 | int ioeventfd_count; | |
a1300716 | 158 | struct kvm_io_range range[]; |
2eeb2e94 GH |
159 | }; |
160 | ||
e93f8a0f MT |
161 | enum kvm_bus { |
162 | KVM_MMIO_BUS, | |
163 | KVM_PIO_BUS, | |
060f0ce6 | 164 | KVM_VIRTIO_CCW_NOTIFY_BUS, |
68c3b4d1 | 165 | KVM_FAST_MMIO_BUS, |
e93f8a0f MT |
166 | KVM_NR_BUSES |
167 | }; | |
168 | ||
e32edf4f | 169 | int kvm_io_bus_write(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr, |
e93f8a0f | 170 | int len, const void *val); |
e32edf4f NN |
171 | int kvm_io_bus_write_cookie(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, |
172 | gpa_t addr, int len, const void *val, long cookie); | |
173 | int kvm_io_bus_read(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr, | |
174 | int len, 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; |
653f52c3 | 234 | unsigned char fpu_counter; |
d17fbbf7 | 235 | wait_queue_head_t wq; |
34bb10b7 | 236 | struct pid *pid; |
d17fbbf7 ZX |
237 | int sigset_active; |
238 | sigset_t sigset; | |
239 | struct kvm_vcpu_stat stat; | |
240 | ||
34c16eec | 241 | #ifdef CONFIG_HAS_IOMEM |
d17fbbf7 ZX |
242 | int mmio_needed; |
243 | int mmio_read_completed; | |
244 | int mmio_is_write; | |
f78146b0 AK |
245 | int mmio_cur_fragment; |
246 | int mmio_nr_fragments; | |
247 | struct kvm_mmio_fragment mmio_fragments[KVM_MAX_MMIO_FRAGMENTS]; | |
34c16eec | 248 | #endif |
1165f5fe | 249 | |
af585b92 GN |
250 | #ifdef CONFIG_KVM_ASYNC_PF |
251 | struct { | |
252 | u32 queued; | |
253 | struct list_head queue; | |
254 | struct list_head done; | |
255 | spinlock_t lock; | |
256 | } async_pf; | |
257 | #endif | |
258 | ||
4c088493 R |
259 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
260 | /* | |
261 | * Cpu relax intercept or pause loop exit optimization | |
262 | * in_spin_loop: set when a vcpu does a pause loop exit | |
263 | * or cpu relax intercepted. | |
264 | * dy_eligible: indicates whether vcpu is eligible for directed yield. | |
265 | */ | |
266 | struct { | |
267 | bool in_spin_loop; | |
268 | bool dy_eligible; | |
269 | } spin_loop; | |
270 | #endif | |
3a08a8f9 | 271 | bool preempted; |
d657a98e ZX |
272 | struct kvm_vcpu_arch arch; |
273 | }; | |
274 | ||
6b7e2d09 XG |
275 | static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu) |
276 | { | |
277 | return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE); | |
278 | } | |
279 | ||
660c22c4 TY |
280 | /* |
281 | * Some of the bitops functions do not support too long bitmaps. | |
282 | * This number must be determined not to exceed such limits. | |
283 | */ | |
284 | #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1) | |
285 | ||
6aa8b732 AK |
286 | struct kvm_memory_slot { |
287 | gfn_t base_gfn; | |
288 | unsigned long npages; | |
6aa8b732 | 289 | unsigned long *dirty_bitmap; |
db3fe4eb | 290 | struct kvm_arch_memory_slot arch; |
8a7ae055 | 291 | unsigned long userspace_addr; |
6104f472 | 292 | u32 flags; |
1e702d9a | 293 | short id; |
6aa8b732 AK |
294 | }; |
295 | ||
87bf6e7d TY |
296 | static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot) |
297 | { | |
298 | return ALIGN(memslot->npages, BITS_PER_LONG) / 8; | |
299 | } | |
300 | ||
84223598 CH |
301 | struct kvm_s390_adapter_int { |
302 | u64 ind_addr; | |
303 | u64 summary_addr; | |
304 | u64 ind_offset; | |
305 | u32 summary_offset; | |
306 | u32 adapter_id; | |
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; |
399ec807 | 322 | }; |
46e624b9 GN |
323 | struct hlist_node link; |
324 | }; | |
325 | ||
0743247f AW |
326 | #ifndef KVM_PRIVATE_MEM_SLOTS |
327 | #define KVM_PRIVATE_MEM_SLOTS 0 | |
328 | #endif | |
329 | ||
93a5cef0 | 330 | #ifndef KVM_MEM_SLOTS_NUM |
bbacc0c1 | 331 | #define KVM_MEM_SLOTS_NUM (KVM_USER_MEM_SLOTS + KVM_PRIVATE_MEM_SLOTS) |
93a5cef0 XG |
332 | #endif |
333 | ||
bf3e05bc XG |
334 | /* |
335 | * Note: | |
336 | * memslots are not sorted by id anymore, please use id_to_memslot() | |
337 | * to get the memslot by its id. | |
338 | */ | |
46a26bf5 | 339 | struct kvm_memslots { |
49c7754c | 340 | u64 generation; |
93a5cef0 | 341 | struct kvm_memory_slot memslots[KVM_MEM_SLOTS_NUM]; |
f85e2cb5 | 342 | /* The mapping table from slot id to the index in memslots[]. */ |
1e702d9a | 343 | short id_to_index[KVM_MEM_SLOTS_NUM]; |
d4ae84a0 | 344 | atomic_t lru_slot; |
9c1a5d38 | 345 | int used_slots; |
46a26bf5 MT |
346 | }; |
347 | ||
6aa8b732 | 348 | struct kvm { |
aaee2c94 | 349 | spinlock_t mmu_lock; |
79fac95e | 350 | struct mutex slots_lock; |
6d4e4c4f | 351 | struct mm_struct *mm; /* userspace tied to this vm */ |
46a26bf5 | 352 | struct kvm_memslots *memslots; |
bc6678a3 | 353 | struct srcu_struct srcu; |
719d93cd | 354 | struct srcu_struct irq_srcu; |
73880c80 GN |
355 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
356 | u32 bsp_vcpu_id; | |
73880c80 | 357 | #endif |
fb3f0f51 | 358 | struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; |
73880c80 | 359 | atomic_t online_vcpus; |
217ece61 | 360 | int last_boosted_vcpu; |
133de902 | 361 | struct list_head vm_list; |
60eead79 | 362 | struct mutex lock; |
e93f8a0f | 363 | struct kvm_io_bus *buses[KVM_NR_BUSES]; |
721eecbf GH |
364 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
365 | struct { | |
366 | spinlock_t lock; | |
367 | struct list_head items; | |
7a84428a AW |
368 | struct list_head resampler_list; |
369 | struct mutex resampler_lock; | |
721eecbf | 370 | } irqfds; |
d34e6b17 | 371 | struct list_head ioeventfds; |
721eecbf | 372 | #endif |
ba1389b7 | 373 | struct kvm_vm_stat stat; |
d69fb81f | 374 | struct kvm_arch arch; |
d39f13b0 | 375 | atomic_t users_count; |
5f94c174 | 376 | #ifdef KVM_COALESCED_MMIO_PAGE_OFFSET |
5f94c174 | 377 | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; |
2b3c246a SL |
378 | spinlock_t ring_lock; |
379 | struct list_head coalesced_zones; | |
5f94c174 | 380 | #endif |
e930bffe | 381 | |
60eead79 | 382 | struct mutex irq_lock; |
75858a84 | 383 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 | 384 | /* |
9957c86d | 385 | * Update side is protected by irq_lock. |
bd2b53b2 | 386 | */ |
4b6a2872 | 387 | struct kvm_irq_routing_table __rcu *irq_routing; |
c77dcacb PB |
388 | #endif |
389 | #ifdef CONFIG_HAVE_KVM_IRQFD | |
136bdfee | 390 | struct hlist_head irq_ack_notifier_list; |
75858a84 AK |
391 | #endif |
392 | ||
36c1ed82 | 393 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
e930bffe AA |
394 | struct mmu_notifier mmu_notifier; |
395 | unsigned long mmu_notifier_seq; | |
396 | long mmu_notifier_count; | |
397 | #endif | |
a086f6a1 | 398 | long tlbs_dirty; |
07f0a7bd | 399 | struct list_head devices; |
6aa8b732 AK |
400 | }; |
401 | ||
a737f256 CD |
402 | #define kvm_err(fmt, ...) \ |
403 | pr_err("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
404 | #define kvm_info(fmt, ...) \ | |
405 | pr_info("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
406 | #define kvm_debug(fmt, ...) \ | |
407 | pr_debug("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
408 | #define kvm_pr_unimpl(fmt, ...) \ | |
409 | pr_err_ratelimited("kvm [%i]: " fmt, \ | |
410 | task_tgid_nr(current), ## __VA_ARGS__) | |
f0242478 | 411 | |
a737f256 CD |
412 | /* The guest did something we don't support. */ |
413 | #define vcpu_unimpl(vcpu, fmt, ...) \ | |
414 | kvm_pr_unimpl("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__) | |
6aa8b732 | 415 | |
988a2cae GN |
416 | static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i) |
417 | { | |
418 | smp_rmb(); | |
419 | return kvm->vcpus[i]; | |
420 | } | |
421 | ||
422 | #define kvm_for_each_vcpu(idx, vcpup, kvm) \ | |
b42fc3cb JM |
423 | for (idx = 0; \ |
424 | idx < atomic_read(&kvm->online_vcpus) && \ | |
425 | (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \ | |
426 | idx++) | |
988a2cae | 427 | |
be6ba0f0 XG |
428 | #define kvm_for_each_memslot(memslot, slots) \ |
429 | for (memslot = &slots->memslots[0]; \ | |
bf3e05bc XG |
430 | memslot < slots->memslots + KVM_MEM_SLOTS_NUM && memslot->npages;\ |
431 | memslot++) | |
be6ba0f0 | 432 | |
fb3f0f51 RR |
433 | int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id); |
434 | void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); | |
435 | ||
9fc77441 | 436 | int __must_check vcpu_load(struct kvm_vcpu *vcpu); |
313a3dc7 CO |
437 | void vcpu_put(struct kvm_vcpu *vcpu); |
438 | ||
6ef768fa PB |
439 | #ifdef __KVM_HAVE_IOAPIC |
440 | void kvm_vcpu_request_scan_ioapic(struct kvm *kvm); | |
441 | #else | |
442 | static inline void kvm_vcpu_request_scan_ioapic(struct kvm *kvm) | |
443 | { | |
444 | } | |
445 | #endif | |
446 | ||
297e2105 | 447 | #ifdef CONFIG_HAVE_KVM_IRQFD |
a0f155e9 CH |
448 | int kvm_irqfd_init(void); |
449 | void kvm_irqfd_exit(void); | |
450 | #else | |
451 | static inline int kvm_irqfd_init(void) | |
452 | { | |
453 | return 0; | |
454 | } | |
455 | ||
456 | static inline void kvm_irqfd_exit(void) | |
457 | { | |
458 | } | |
459 | #endif | |
0ee75bea | 460 | int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, |
c16f862d | 461 | struct module *module); |
cb498ea2 | 462 | void kvm_exit(void); |
6aa8b732 | 463 | |
d39f13b0 IE |
464 | void kvm_get_kvm(struct kvm *kvm); |
465 | void kvm_put_kvm(struct kvm *kvm); | |
466 | ||
90d83dc3 LJ |
467 | static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm) |
468 | { | |
469 | return rcu_dereference_check(kvm->memslots, | |
470 | srcu_read_lock_held(&kvm->srcu) | |
471 | || lockdep_is_held(&kvm->slots_lock)); | |
472 | } | |
473 | ||
28a37544 XG |
474 | static inline struct kvm_memory_slot * |
475 | id_to_memslot(struct kvm_memslots *slots, int id) | |
476 | { | |
f85e2cb5 XG |
477 | int index = slots->id_to_index[id]; |
478 | struct kvm_memory_slot *slot; | |
bf3e05bc | 479 | |
f85e2cb5 | 480 | slot = &slots->memslots[index]; |
bf3e05bc | 481 | |
f85e2cb5 XG |
482 | WARN_ON(slot->id != id); |
483 | return slot; | |
28a37544 XG |
484 | } |
485 | ||
74d0727c TY |
486 | /* |
487 | * KVM_SET_USER_MEMORY_REGION ioctl allows the following operations: | |
488 | * - create a new memory slot | |
489 | * - delete an existing memory slot | |
490 | * - modify an existing memory slot | |
491 | * -- move it in the guest physical memory space | |
492 | * -- just change its flags | |
493 | * | |
494 | * Since flags can be changed by some of these operations, the following | |
495 | * differentiation is the best we can do for __kvm_set_memory_region(): | |
496 | */ | |
497 | enum kvm_mr_change { | |
498 | KVM_MR_CREATE, | |
499 | KVM_MR_DELETE, | |
500 | KVM_MR_MOVE, | |
501 | KVM_MR_FLAGS_ONLY, | |
502 | }; | |
503 | ||
210c7c4d | 504 | int kvm_set_memory_region(struct kvm *kvm, |
09170a49 | 505 | const struct kvm_userspace_memory_region *mem); |
f78e0e2e | 506 | int __kvm_set_memory_region(struct kvm *kvm, |
09170a49 | 507 | const struct kvm_userspace_memory_region *mem); |
5587027c | 508 | void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free, |
db3fe4eb | 509 | struct kvm_memory_slot *dont); |
5587027c AK |
510 | int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, |
511 | unsigned long npages); | |
15f46015 | 512 | void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots); |
f7784b8e MT |
513 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
514 | struct kvm_memory_slot *memslot, | |
09170a49 | 515 | const struct kvm_userspace_memory_region *mem, |
7b6195a9 | 516 | enum kvm_mr_change change); |
f7784b8e | 517 | void kvm_arch_commit_memory_region(struct kvm *kvm, |
09170a49 | 518 | const struct kvm_userspace_memory_region *mem, |
8482644a | 519 | const struct kvm_memory_slot *old, |
f36f3f28 | 520 | const struct kvm_memory_slot *new, |
8482644a | 521 | enum kvm_mr_change change); |
db3fe4eb | 522 | bool kvm_largepages_enabled(void); |
54dee993 | 523 | void kvm_disable_largepages(void); |
2df72e9b MT |
524 | /* flush all memory translations */ |
525 | void kvm_arch_flush_shadow_all(struct kvm *kvm); | |
526 | /* flush memory translations pointing to 'slot' */ | |
527 | void kvm_arch_flush_shadow_memslot(struct kvm *kvm, | |
528 | struct kvm_memory_slot *slot); | |
a983fb23 | 529 | |
d9ef13c2 PB |
530 | int gfn_to_page_many_atomic(struct kvm_memory_slot *slot, gfn_t gfn, |
531 | struct page **pages, int nr_pages); | |
48987781 | 532 | |
954bbbc2 | 533 | struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); |
05da4558 | 534 | unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn); |
ba6a3541 | 535 | unsigned long gfn_to_hva_prot(struct kvm *kvm, gfn_t gfn, bool *writable); |
4d8b81ab | 536 | unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
64d83126 CD |
537 | unsigned long gfn_to_hva_memslot_prot(struct kvm_memory_slot *slot, gfn_t gfn, |
538 | bool *writable); | |
b4231d61 IE |
539 | void kvm_release_page_clean(struct page *page); |
540 | void kvm_release_page_dirty(struct page *page); | |
35149e21 AL |
541 | void kvm_set_page_accessed(struct page *page); |
542 | ||
365fb3fd | 543 | pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn); |
35149e21 | 544 | pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn); |
612819c3 MT |
545 | pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault, |
546 | bool *writable); | |
d5661048 | 547 | pfn_t gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
037d92dc | 548 | pfn_t gfn_to_pfn_memslot_atomic(struct kvm_memory_slot *slot, gfn_t gfn); |
3520469d PB |
549 | pfn_t __gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn, bool atomic, |
550 | bool *async, bool write_fault, bool *writable); | |
037d92dc | 551 | |
35149e21 AL |
552 | void kvm_release_pfn_clean(pfn_t pfn); |
553 | void kvm_set_pfn_dirty(pfn_t pfn); | |
554 | void kvm_set_pfn_accessed(pfn_t pfn); | |
555 | void kvm_get_pfn(pfn_t pfn); | |
556 | ||
195aefde IE |
557 | int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, |
558 | int len); | |
7ec54588 MT |
559 | int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data, |
560 | unsigned long len); | |
195aefde | 561 | int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); |
e03b644f GN |
562 | int kvm_read_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
563 | void *data, unsigned long len); | |
195aefde IE |
564 | int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, |
565 | int offset, int len); | |
566 | int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, | |
567 | unsigned long len); | |
49c7754c GN |
568 | int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
569 | void *data, unsigned long len); | |
570 | int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc, | |
8f964525 | 571 | gpa_t gpa, unsigned long len); |
195aefde IE |
572 | int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); |
573 | int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); | |
6aa8b732 | 574 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); |
e0d62c7f | 575 | int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); |
8f0b1ab6 | 576 | unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn); |
6aa8b732 AK |
577 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); |
578 | ||
8776e519 | 579 | void kvm_vcpu_block(struct kvm_vcpu *vcpu); |
b6d33834 | 580 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
fa93384f | 581 | int kvm_vcpu_yield_to(struct kvm_vcpu *target); |
d255f4f2 | 582 | void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu); |
7702fd1f AK |
583 | void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); |
584 | void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); | |
a4ee1ca4 | 585 | |
d9e368d6 | 586 | void kvm_flush_remote_tlbs(struct kvm *kvm); |
2e53d63a | 587 | void kvm_reload_remote_mmus(struct kvm *kvm); |
d828199e | 588 | void kvm_make_mclock_inprogress_request(struct kvm *kvm); |
3d81bc7e | 589 | void kvm_make_scan_ioapic_request(struct kvm *kvm); |
445b8236 | 590 | bool kvm_make_all_cpus_request(struct kvm *kvm, unsigned int req); |
6aa8b732 | 591 | |
043405e1 CO |
592 | long kvm_arch_dev_ioctl(struct file *filp, |
593 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 CO |
594 | long kvm_arch_vcpu_ioctl(struct file *filp, |
595 | unsigned int ioctl, unsigned long arg); | |
5b1c1493 | 596 | int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf); |
018d00d2 | 597 | |
784aa3d7 | 598 | int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext); |
018d00d2 | 599 | |
5bb064dc ZX |
600 | int kvm_get_dirty_log(struct kvm *kvm, |
601 | struct kvm_dirty_log *log, int *is_dirty); | |
ba0513b5 MS |
602 | |
603 | int kvm_get_dirty_log_protect(struct kvm *kvm, | |
604 | struct kvm_dirty_log *log, bool *is_dirty); | |
605 | ||
3b0f1d01 | 606 | void kvm_arch_mmu_enable_log_dirty_pt_masked(struct kvm *kvm, |
ba0513b5 MS |
607 | struct kvm_memory_slot *slot, |
608 | gfn_t gfn_offset, | |
609 | unsigned long mask); | |
610 | ||
5bb064dc ZX |
611 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, |
612 | struct kvm_dirty_log *log); | |
613 | ||
aa2fbe6d YZ |
614 | int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_level, |
615 | bool line_status); | |
1fe779f8 CO |
616 | long kvm_arch_vm_ioctl(struct file *filp, |
617 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 | 618 | |
d0752060 HB |
619 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); |
620 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); | |
621 | ||
8b006791 ZX |
622 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, |
623 | struct kvm_translation *tr); | |
624 | ||
b6c7a5dc HB |
625 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); |
626 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); | |
627 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
628 | struct kvm_sregs *sregs); | |
629 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
630 | struct kvm_sregs *sregs); | |
62d9f0db MT |
631 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
632 | struct kvm_mp_state *mp_state); | |
633 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
634 | struct kvm_mp_state *mp_state); | |
d0bfb940 JK |
635 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
636 | struct kvm_guest_debug *dbg); | |
b6c7a5dc HB |
637 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); |
638 | ||
f8c16bba ZX |
639 | int kvm_arch_init(void *opaque); |
640 | void kvm_arch_exit(void); | |
043405e1 | 641 | |
e9b11c17 ZX |
642 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); |
643 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu); | |
644 | ||
e790d9ef RK |
645 | void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu); |
646 | ||
e9b11c17 ZX |
647 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu); |
648 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
649 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); | |
650 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); | |
26e5215f | 651 | int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu); |
31928aa5 | 652 | void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu); |
d40ccc62 | 653 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu); |
e9b11c17 | 654 | |
13a34e06 RK |
655 | int kvm_arch_hardware_enable(void); |
656 | void kvm_arch_hardware_disable(void); | |
e9b11c17 ZX |
657 | int kvm_arch_hardware_setup(void); |
658 | void kvm_arch_hardware_unsetup(void); | |
659 | void kvm_arch_check_processor_compat(void *rtn); | |
1d737c8a | 660 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu); |
b6d33834 | 661 | int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu); |
e9b11c17 | 662 | |
c1a7b32a | 663 | void *kvm_kvzalloc(unsigned long size); |
c1a7b32a | 664 | |
d89f5eff JK |
665 | #ifndef __KVM_HAVE_ARCH_VM_ALLOC |
666 | static inline struct kvm *kvm_arch_alloc_vm(void) | |
667 | { | |
668 | return kzalloc(sizeof(struct kvm), GFP_KERNEL); | |
669 | } | |
670 | ||
671 | static inline void kvm_arch_free_vm(struct kvm *kvm) | |
672 | { | |
673 | kfree(kvm); | |
674 | } | |
675 | #endif | |
676 | ||
e0f0bbc5 AW |
677 | #ifdef __KVM_HAVE_ARCH_NONCOHERENT_DMA |
678 | void kvm_arch_register_noncoherent_dma(struct kvm *kvm); | |
679 | void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm); | |
680 | bool kvm_arch_has_noncoherent_dma(struct kvm *kvm); | |
681 | #else | |
682 | static inline void kvm_arch_register_noncoherent_dma(struct kvm *kvm) | |
683 | { | |
684 | } | |
685 | ||
686 | static inline void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm) | |
687 | { | |
688 | } | |
689 | ||
690 | static inline bool kvm_arch_has_noncoherent_dma(struct kvm *kvm) | |
691 | { | |
692 | return false; | |
693 | } | |
694 | #endif | |
695 | ||
b6d33834 CD |
696 | static inline wait_queue_head_t *kvm_arch_vcpu_wq(struct kvm_vcpu *vcpu) |
697 | { | |
2246f8b5 AG |
698 | #ifdef __KVM_HAVE_ARCH_WQP |
699 | return vcpu->arch.wqp; | |
700 | #else | |
b6d33834 | 701 | return &vcpu->wq; |
b6d33834 | 702 | #endif |
2246f8b5 | 703 | } |
b6d33834 | 704 | |
01c94e64 EA |
705 | #ifdef __KVM_HAVE_ARCH_INTC_INITIALIZED |
706 | /* | |
707 | * returns true if the virtual interrupt controller is initialized and | |
708 | * ready to accept virtual IRQ. On some architectures the virtual interrupt | |
709 | * controller is dynamically instantiated and this is not always true. | |
710 | */ | |
711 | bool kvm_arch_intc_initialized(struct kvm *kvm); | |
712 | #else | |
713 | static inline bool kvm_arch_intc_initialized(struct kvm *kvm) | |
714 | { | |
715 | return true; | |
716 | } | |
717 | #endif | |
718 | ||
e08b9637 | 719 | int kvm_arch_init_vm(struct kvm *kvm, unsigned long type); |
d19a9cd2 | 720 | void kvm_arch_destroy_vm(struct kvm *kvm); |
ad8ba2cd | 721 | void kvm_arch_sync_events(struct kvm *kvm); |
e9b11c17 | 722 | |
3d80840d | 723 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu); |
5736199a | 724 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
682c59a3 | 725 | |
bf4bea8e | 726 | bool kvm_is_reserved_pfn(pfn_t pfn); |
c77fb9dc | 727 | |
62c476c7 BAY |
728 | struct kvm_irq_ack_notifier { |
729 | struct hlist_node link; | |
730 | unsigned gsi; | |
731 | void (*irq_acked)(struct kvm_irq_ack_notifier *kian); | |
732 | }; | |
733 | ||
9957c86d PM |
734 | int kvm_irq_map_gsi(struct kvm *kvm, |
735 | struct kvm_kernel_irq_routing_entry *entries, int gsi); | |
736 | int kvm_irq_map_chip_pin(struct kvm *kvm, unsigned irqchip, unsigned pin); | |
8ba918d4 | 737 | |
aa2fbe6d YZ |
738 | int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level, |
739 | bool line_status); | |
01f21880 | 740 | int kvm_set_irq_inatomic(struct kvm *kvm, int irq_source_id, u32 irq, int level); |
bd2b53b2 | 741 | int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm, |
aa2fbe6d | 742 | int irq_source_id, int level, bool line_status); |
c7c9c56c | 743 | bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin); |
44882eed | 744 | void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin); |
3de42dc0 XZ |
745 | void kvm_register_irq_ack_notifier(struct kvm *kvm, |
746 | struct kvm_irq_ack_notifier *kian); | |
fa40a821 MT |
747 | void kvm_unregister_irq_ack_notifier(struct kvm *kvm, |
748 | struct kvm_irq_ack_notifier *kian); | |
5550af4d SY |
749 | int kvm_request_irq_source_id(struct kvm *kvm); |
750 | void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id); | |
62c476c7 | 751 | |
2a5bab10 | 752 | #ifdef CONFIG_KVM_DEVICE_ASSIGNMENT |
3ad26d81 | 753 | int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
32f6daad | 754 | void kvm_iommu_unmap_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
2a5bab10 | 755 | #else |
62c476c7 | 756 | static inline int kvm_iommu_map_pages(struct kvm *kvm, |
d7a79b6c | 757 | struct kvm_memory_slot *slot) |
62c476c7 BAY |
758 | { |
759 | return 0; | |
760 | } | |
761 | ||
32f6daad AW |
762 | static inline void kvm_iommu_unmap_pages(struct kvm *kvm, |
763 | struct kvm_memory_slot *slot) | |
764 | { | |
765 | } | |
2a5bab10 | 766 | #endif |
62c476c7 | 767 | |
0097d12e CB |
768 | /* must be called with irqs disabled */ |
769 | static inline void __kvm_guest_enter(void) | |
c11f11fc | 770 | { |
c11f11fc | 771 | guest_enter(); |
8fa22068 GN |
772 | /* KVM does not hold any references to rcu protected data when it |
773 | * switches CPU into a guest mode. In fact switching to a guest mode | |
81e87e26 | 774 | * is very similar to exiting to userspace from rcu point of view. In |
8fa22068 GN |
775 | * addition CPU may stay in a guest mode for quite a long time (up to |
776 | * one time slice). Lets treat guest mode as quiescent state, just like | |
777 | * we do with user-mode execution. | |
778 | */ | |
126a6a54 RR |
779 | if (!context_tracking_cpu_is_enabled()) |
780 | rcu_virt_note_context_switch(smp_processor_id()); | |
d172fcd3 LV |
781 | } |
782 | ||
0097d12e CB |
783 | /* must be called with irqs disabled */ |
784 | static inline void __kvm_guest_exit(void) | |
785 | { | |
786 | guest_exit(); | |
787 | } | |
788 | ||
789 | static inline void kvm_guest_enter(void) | |
790 | { | |
791 | unsigned long flags; | |
792 | ||
793 | local_irq_save(flags); | |
794 | __kvm_guest_enter(); | |
795 | local_irq_restore(flags); | |
796 | } | |
797 | ||
d172fcd3 LV |
798 | static inline void kvm_guest_exit(void) |
799 | { | |
c11f11fc FW |
800 | unsigned long flags; |
801 | ||
802 | local_irq_save(flags); | |
0097d12e | 803 | __kvm_guest_exit(); |
c11f11fc | 804 | local_irq_restore(flags); |
d172fcd3 LV |
805 | } |
806 | ||
9d4cba7f PM |
807 | /* |
808 | * search_memslots() and __gfn_to_memslot() are here because they are | |
809 | * used in non-modular code in arch/powerpc/kvm/book3s_hv_rm_mmu.c. | |
810 | * gfn_to_memslot() itself isn't here as an inline because that would | |
811 | * bloat other code too much. | |
812 | */ | |
813 | static inline struct kvm_memory_slot * | |
814 | search_memslots(struct kvm_memslots *slots, gfn_t gfn) | |
815 | { | |
9c1a5d38 | 816 | int start = 0, end = slots->used_slots; |
d4ae84a0 | 817 | int slot = atomic_read(&slots->lru_slot); |
9c1a5d38 IM |
818 | struct kvm_memory_slot *memslots = slots->memslots; |
819 | ||
820 | if (gfn >= memslots[slot].base_gfn && | |
821 | gfn < memslots[slot].base_gfn + memslots[slot].npages) | |
822 | return &memslots[slot]; | |
823 | ||
824 | while (start < end) { | |
825 | slot = start + (end - start) / 2; | |
826 | ||
827 | if (gfn >= memslots[slot].base_gfn) | |
828 | end = slot; | |
829 | else | |
830 | start = slot + 1; | |
831 | } | |
832 | ||
833 | if (gfn >= memslots[start].base_gfn && | |
834 | gfn < memslots[start].base_gfn + memslots[start].npages) { | |
835 | atomic_set(&slots->lru_slot, start); | |
836 | return &memslots[start]; | |
837 | } | |
9d4cba7f PM |
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 | ||
dfeec843 HC |
882 | static inline bool kvm_is_error_gpa(struct kvm *kvm, gpa_t gpa) |
883 | { | |
884 | unsigned long hva = gfn_to_hva(kvm, gpa_to_gfn(gpa)); | |
885 | ||
886 | return kvm_is_error_hva(hva); | |
887 | } | |
888 | ||
2f599714 | 889 | static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu) |
2f52d58c AK |
890 | { |
891 | set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests); | |
892 | } | |
893 | ||
ba1389b7 AK |
894 | enum kvm_stat_kind { |
895 | KVM_STAT_VM, | |
896 | KVM_STAT_VCPU, | |
897 | }; | |
898 | ||
417bc304 HB |
899 | struct kvm_stats_debugfs_item { |
900 | const char *name; | |
901 | int offset; | |
ba1389b7 | 902 | enum kvm_stat_kind kind; |
417bc304 HB |
903 | struct dentry *dentry; |
904 | }; | |
905 | extern struct kvm_stats_debugfs_item debugfs_entries[]; | |
76f7c879 | 906 | extern struct dentry *kvm_debugfs_dir; |
d4c9ff2d | 907 | |
36c1ed82 | 908 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
8ca40a70 | 909 | static inline int mmu_notifier_retry(struct kvm *kvm, unsigned long mmu_seq) |
e930bffe | 910 | { |
8ca40a70 | 911 | if (unlikely(kvm->mmu_notifier_count)) |
e930bffe AA |
912 | return 1; |
913 | /* | |
a355aa54 PM |
914 | * Ensure the read of mmu_notifier_count happens before the read |
915 | * of mmu_notifier_seq. This interacts with the smp_wmb() in | |
916 | * mmu_notifier_invalidate_range_end to make sure that the caller | |
917 | * either sees the old (non-zero) value of mmu_notifier_count or | |
918 | * the new (incremented) value of mmu_notifier_seq. | |
919 | * PowerPC Book3s HV KVM calls this under a per-page lock | |
920 | * rather than under kvm->mmu_lock, for scalability, so | |
921 | * can't rely on kvm->mmu_lock to keep things ordered. | |
e930bffe | 922 | */ |
a355aa54 | 923 | smp_rmb(); |
8ca40a70 | 924 | if (kvm->mmu_notifier_seq != mmu_seq) |
e930bffe AA |
925 | return 1; |
926 | return 0; | |
927 | } | |
928 | #endif | |
929 | ||
a725d56a | 930 | #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING |
399ec807 | 931 | |
f3f710bc CH |
932 | #ifdef CONFIG_S390 |
933 | #define KVM_MAX_IRQ_ROUTES 4096 //FIXME: we can have more than that... | |
934 | #else | |
399ec807 | 935 | #define KVM_MAX_IRQ_ROUTES 1024 |
f3f710bc | 936 | #endif |
399ec807 AK |
937 | |
938 | int kvm_setup_default_irq_routing(struct kvm *kvm); | |
939 | int kvm_set_irq_routing(struct kvm *kvm, | |
940 | const struct kvm_irq_routing_entry *entries, | |
941 | unsigned nr, | |
942 | unsigned flags); | |
8ba918d4 | 943 | int kvm_set_routing_entry(struct kvm_kernel_irq_routing_entry *e, |
e8cde093 | 944 | const struct kvm_irq_routing_entry *ue); |
399ec807 AK |
945 | void kvm_free_irq_routing(struct kvm *kvm); |
946 | ||
947 | #else | |
948 | ||
949 | static inline void kvm_free_irq_routing(struct kvm *kvm) {} | |
950 | ||
951 | #endif | |
952 | ||
297e2105 PM |
953 | int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi); |
954 | ||
721eecbf GH |
955 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
956 | ||
d34e6b17 | 957 | void kvm_eventfd_init(struct kvm *kvm); |
914daba8 AG |
958 | int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args); |
959 | ||
297e2105 | 960 | #ifdef CONFIG_HAVE_KVM_IRQFD |
d4db2935 | 961 | int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args); |
721eecbf | 962 | void kvm_irqfd_release(struct kvm *kvm); |
9957c86d | 963 | void kvm_irq_routing_update(struct kvm *); |
914daba8 AG |
964 | #else |
965 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) | |
966 | { | |
967 | return -EINVAL; | |
968 | } | |
969 | ||
970 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
971 | #endif | |
721eecbf GH |
972 | |
973 | #else | |
974 | ||
d34e6b17 | 975 | static inline void kvm_eventfd_init(struct kvm *kvm) {} |
bd2b53b2 | 976 | |
d4db2935 | 977 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) |
721eecbf GH |
978 | { |
979 | return -EINVAL; | |
980 | } | |
981 | ||
982 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
bd2b53b2 | 983 | |
27923eb1 | 984 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
9957c86d | 985 | static inline void kvm_irq_routing_update(struct kvm *kvm) |
bd2b53b2 | 986 | { |
bd2b53b2 | 987 | } |
27923eb1 | 988 | #endif |
bd2b53b2 | 989 | |
d34e6b17 GH |
990 | static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) |
991 | { | |
992 | return -ENOSYS; | |
993 | } | |
721eecbf GH |
994 | |
995 | #endif /* CONFIG_HAVE_KVM_EVENTFD */ | |
996 | ||
73880c80 | 997 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
58d269d8 | 998 | static inline bool kvm_vcpu_is_reset_bsp(struct kvm_vcpu *vcpu) |
c5af89b6 | 999 | { |
d3efc8ef | 1000 | return vcpu->kvm->bsp_vcpu_id == vcpu->vcpu_id; |
c5af89b6 | 1001 | } |
3e515705 | 1002 | |
58d269d8 NA |
1003 | static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu) |
1004 | { | |
1005 | return (vcpu->arch.apic_base & MSR_IA32_APICBASE_BSP) != 0; | |
1006 | } | |
1007 | ||
3e515705 AK |
1008 | bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu); |
1009 | ||
1010 | #else | |
1011 | ||
1012 | static inline bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu) { return true; } | |
1013 | ||
6aa8b732 | 1014 | #endif |
bfd99ff5 | 1015 | |
a8eeb04a AK |
1016 | static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu) |
1017 | { | |
1018 | set_bit(req, &vcpu->requests); | |
1019 | } | |
1020 | ||
a8eeb04a AK |
1021 | static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu) |
1022 | { | |
0719837c AK |
1023 | if (test_bit(req, &vcpu->requests)) { |
1024 | clear_bit(req, &vcpu->requests); | |
1025 | return true; | |
1026 | } else { | |
1027 | return false; | |
1028 | } | |
a8eeb04a AK |
1029 | } |
1030 | ||
8b415dcd GL |
1031 | extern bool kvm_rebooting; |
1032 | ||
852b6d57 SW |
1033 | struct kvm_device { |
1034 | struct kvm_device_ops *ops; | |
1035 | struct kvm *kvm; | |
852b6d57 | 1036 | void *private; |
07f0a7bd | 1037 | struct list_head vm_node; |
852b6d57 SW |
1038 | }; |
1039 | ||
1040 | /* create, destroy, and name are mandatory */ | |
1041 | struct kvm_device_ops { | |
1042 | const char *name; | |
1043 | int (*create)(struct kvm_device *dev, u32 type); | |
1044 | ||
1045 | /* | |
1046 | * Destroy is responsible for freeing dev. | |
1047 | * | |
1048 | * Destroy may be called before or after destructors are called | |
1049 | * on emulated I/O regions, depending on whether a reference is | |
1050 | * held by a vcpu or other kvm component that gets destroyed | |
1051 | * after the emulated I/O. | |
1052 | */ | |
1053 | void (*destroy)(struct kvm_device *dev); | |
1054 | ||
1055 | int (*set_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1056 | int (*get_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1057 | int (*has_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1058 | long (*ioctl)(struct kvm_device *dev, unsigned int ioctl, | |
1059 | unsigned long arg); | |
1060 | }; | |
1061 | ||
1062 | void kvm_device_get(struct kvm_device *dev); | |
1063 | void kvm_device_put(struct kvm_device *dev); | |
1064 | struct kvm_device *kvm_device_from_filp(struct file *filp); | |
d60eacb0 | 1065 | int kvm_register_device_ops(struct kvm_device_ops *ops, u32 type); |
571ee1b6 | 1066 | void kvm_unregister_device_ops(u32 type); |
852b6d57 | 1067 | |
5df554ad | 1068 | extern struct kvm_device_ops kvm_mpic_ops; |
5975a2e0 | 1069 | extern struct kvm_device_ops kvm_xics_ops; |
ea2f83a7 | 1070 | extern struct kvm_device_ops kvm_arm_vgic_v2_ops; |
a0675c25 | 1071 | extern struct kvm_device_ops kvm_arm_vgic_v3_ops; |
5df554ad | 1072 | |
4c088493 R |
1073 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
1074 | ||
1075 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
1076 | { | |
1077 | vcpu->spin_loop.in_spin_loop = val; | |
1078 | } | |
1079 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
1080 | { | |
1081 | vcpu->spin_loop.dy_eligible = val; | |
1082 | } | |
1083 | ||
1084 | #else /* !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 | } | |
1089 | ||
1090 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
1091 | { | |
1092 | } | |
4c088493 | 1093 | #endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ |
bfd99ff5 | 1094 | #endif |
09a6e1f4 | 1095 |