Commit | Line | Data |
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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> | |
6aa8b732 | 16 | #include <linux/mm.h> |
b297e672 | 17 | #include <linux/mmu_notifier.h> |
15ad7146 | 18 | #include <linux/preempt.h> |
0937c48d | 19 | #include <linux/msi.h> |
d89f5eff | 20 | #include <linux/slab.h> |
bd2b53b2 | 21 | #include <linux/rcupdate.h> |
bd80158a | 22 | #include <linux/ratelimit.h> |
e8edc6e0 | 23 | #include <asm/signal.h> |
6aa8b732 | 24 | |
6aa8b732 | 25 | #include <linux/kvm.h> |
102d8325 | 26 | #include <linux/kvm_para.h> |
6aa8b732 | 27 | |
edf88417 | 28 | #include <linux/kvm_types.h> |
d77a39d9 | 29 | |
edf88417 | 30 | #include <asm/kvm_host.h> |
d657a98e | 31 | |
cef4dea0 AK |
32 | #ifndef KVM_MMIO_SIZE |
33 | #define KVM_MMIO_SIZE 8 | |
34 | #endif | |
35 | ||
d9e368d6 AK |
36 | /* |
37 | * vcpu->requests bit members | |
38 | */ | |
3176bc3e | 39 | #define KVM_REQ_TLB_FLUSH 0 |
2f52d58c | 40 | #define KVM_REQ_MIGRATE_TIMER 1 |
b209749f | 41 | #define KVM_REQ_REPORT_TPR_ACCESS 2 |
2e53d63a | 42 | #define KVM_REQ_MMU_RELOAD 3 |
71c4dfaf | 43 | #define KVM_REQ_TRIPLE_FAULT 4 |
06e05645 | 44 | #define KVM_REQ_PENDING_TIMER 5 |
d7690175 | 45 | #define KVM_REQ_UNHALT 6 |
4731d4c7 | 46 | #define KVM_REQ_MMU_SYNC 7 |
34c238a1 | 47 | #define KVM_REQ_CLOCK_UPDATE 8 |
32f88400 | 48 | #define KVM_REQ_KICK 9 |
02daab21 | 49 | #define KVM_REQ_DEACTIVATE_FPU 10 |
3842d135 | 50 | #define KVM_REQ_EVENT 11 |
af585b92 | 51 | #define KVM_REQ_APF_HALT 12 |
c9aaa895 | 52 | #define KVM_REQ_STEAL_UPDATE 13 |
7460fb4a | 53 | #define KVM_REQ_NMI 14 |
d6185f20 | 54 | #define KVM_REQ_IMMEDIATE_EXIT 15 |
6aa8b732 | 55 | |
5550af4d SY |
56 | #define KVM_USERSPACE_IRQ_SOURCE_ID 0 |
57 | ||
6c474694 | 58 | struct kvm; |
6aa8b732 | 59 | struct kvm_vcpu; |
c16f862d | 60 | extern struct kmem_cache *kvm_vcpu_cache; |
6aa8b732 | 61 | |
743eeb0b SL |
62 | struct kvm_io_range { |
63 | gpa_t addr; | |
64 | int len; | |
65 | struct kvm_io_device *dev; | |
66 | }; | |
67 | ||
2eeb2e94 GH |
68 | struct kvm_io_bus { |
69 | int dev_count; | |
2b3c246a | 70 | #define NR_IOBUS_DEVS 300 |
743eeb0b | 71 | struct kvm_io_range range[NR_IOBUS_DEVS]; |
2eeb2e94 GH |
72 | }; |
73 | ||
e93f8a0f MT |
74 | enum kvm_bus { |
75 | KVM_MMIO_BUS, | |
76 | KVM_PIO_BUS, | |
77 | KVM_NR_BUSES | |
78 | }; | |
79 | ||
80 | int kvm_io_bus_write(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, | |
81 | int len, const void *val); | |
82 | int kvm_io_bus_read(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, int len, | |
bda9020e | 83 | void *val); |
743eeb0b SL |
84 | int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, |
85 | int len, struct kvm_io_device *dev); | |
e93f8a0f MT |
86 | int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx, |
87 | struct kvm_io_device *dev); | |
2eeb2e94 | 88 | |
af585b92 GN |
89 | #ifdef CONFIG_KVM_ASYNC_PF |
90 | struct kvm_async_pf { | |
91 | struct work_struct work; | |
92 | struct list_head link; | |
93 | struct list_head queue; | |
94 | struct kvm_vcpu *vcpu; | |
95 | struct mm_struct *mm; | |
96 | gva_t gva; | |
97 | unsigned long addr; | |
98 | struct kvm_arch_async_pf arch; | |
99 | struct page *page; | |
100 | bool done; | |
101 | }; | |
102 | ||
103 | void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu); | |
104 | void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu); | |
105 | int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, gfn_t gfn, | |
106 | struct kvm_arch_async_pf *arch); | |
344d9588 | 107 | int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu); |
af585b92 GN |
108 | #endif |
109 | ||
6b7e2d09 XG |
110 | enum { |
111 | OUTSIDE_GUEST_MODE, | |
112 | IN_GUEST_MODE, | |
113 | EXITING_GUEST_MODE | |
114 | }; | |
115 | ||
d17fbbf7 ZX |
116 | struct kvm_vcpu { |
117 | struct kvm *kvm; | |
31bb117e | 118 | #ifdef CONFIG_PREEMPT_NOTIFIERS |
d17fbbf7 | 119 | struct preempt_notifier preempt_notifier; |
31bb117e | 120 | #endif |
6b7e2d09 | 121 | int cpu; |
d17fbbf7 | 122 | int vcpu_id; |
6b7e2d09 XG |
123 | int srcu_idx; |
124 | int mode; | |
d17fbbf7 | 125 | unsigned long requests; |
d0bfb940 | 126 | unsigned long guest_debug; |
6b7e2d09 XG |
127 | |
128 | struct mutex mutex; | |
129 | struct kvm_run *run; | |
f656ce01 | 130 | |
d17fbbf7 | 131 | int fpu_active; |
2acf923e | 132 | int guest_fpu_loaded, guest_xcr0_loaded; |
d17fbbf7 | 133 | wait_queue_head_t wq; |
34bb10b7 | 134 | struct pid *pid; |
d17fbbf7 ZX |
135 | int sigset_active; |
136 | sigset_t sigset; | |
137 | struct kvm_vcpu_stat stat; | |
138 | ||
34c16eec | 139 | #ifdef CONFIG_HAS_IOMEM |
d17fbbf7 ZX |
140 | int mmio_needed; |
141 | int mmio_read_completed; | |
142 | int mmio_is_write; | |
143 | int mmio_size; | |
cef4dea0 AK |
144 | int mmio_index; |
145 | unsigned char mmio_data[KVM_MMIO_SIZE]; | |
6aa8b732 | 146 | gpa_t mmio_phys_addr; |
34c16eec | 147 | #endif |
1165f5fe | 148 | |
af585b92 GN |
149 | #ifdef CONFIG_KVM_ASYNC_PF |
150 | struct { | |
151 | u32 queued; | |
152 | struct list_head queue; | |
153 | struct list_head done; | |
154 | spinlock_t lock; | |
155 | } async_pf; | |
156 | #endif | |
157 | ||
d657a98e ZX |
158 | struct kvm_vcpu_arch arch; |
159 | }; | |
160 | ||
6b7e2d09 XG |
161 | static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu) |
162 | { | |
163 | return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE); | |
164 | } | |
165 | ||
660c22c4 TY |
166 | /* |
167 | * Some of the bitops functions do not support too long bitmaps. | |
168 | * This number must be determined not to exceed such limits. | |
169 | */ | |
170 | #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1) | |
171 | ||
d4dbf470 TY |
172 | struct kvm_lpage_info { |
173 | unsigned long rmap_pde; | |
174 | int write_count; | |
175 | }; | |
176 | ||
6aa8b732 AK |
177 | struct kvm_memory_slot { |
178 | gfn_t base_gfn; | |
179 | unsigned long npages; | |
180 | unsigned long flags; | |
290fc38d | 181 | unsigned long *rmap; |
6aa8b732 | 182 | unsigned long *dirty_bitmap; |
515a0127 | 183 | unsigned long *dirty_bitmap_head; |
7850ac54 | 184 | unsigned long nr_dirty_pages; |
d4dbf470 | 185 | struct kvm_lpage_info *lpage_info[KVM_NR_PAGE_SIZES - 1]; |
8a7ae055 | 186 | unsigned long userspace_addr; |
80b14b5b | 187 | int user_alloc; |
e36d96f7 | 188 | int id; |
6aa8b732 AK |
189 | }; |
190 | ||
87bf6e7d TY |
191 | static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot) |
192 | { | |
193 | return ALIGN(memslot->npages, BITS_PER_LONG) / 8; | |
194 | } | |
195 | ||
399ec807 AK |
196 | struct kvm_kernel_irq_routing_entry { |
197 | u32 gsi; | |
5116d8f6 | 198 | u32 type; |
4925663a | 199 | int (*set)(struct kvm_kernel_irq_routing_entry *e, |
1a6e4a8c | 200 | struct kvm *kvm, int irq_source_id, int level); |
399ec807 AK |
201 | union { |
202 | struct { | |
203 | unsigned irqchip; | |
204 | unsigned pin; | |
205 | } irqchip; | |
79950e10 | 206 | struct msi_msg msi; |
399ec807 | 207 | }; |
46e624b9 GN |
208 | struct hlist_node link; |
209 | }; | |
210 | ||
3e71f88b GN |
211 | #ifdef __KVM_HAVE_IOAPIC |
212 | ||
46e624b9 | 213 | struct kvm_irq_routing_table { |
3e71f88b | 214 | int chip[KVM_NR_IRQCHIPS][KVM_IOAPIC_NUM_PINS]; |
46e624b9 GN |
215 | struct kvm_kernel_irq_routing_entry *rt_entries; |
216 | u32 nr_rt_entries; | |
217 | /* | |
218 | * Array indexed by gsi. Each entry contains list of irq chips | |
219 | * the gsi is connected to. | |
220 | */ | |
221 | struct hlist_head map[0]; | |
399ec807 AK |
222 | }; |
223 | ||
3e71f88b GN |
224 | #else |
225 | ||
226 | struct kvm_irq_routing_table {}; | |
227 | ||
228 | #endif | |
229 | ||
93a5cef0 XG |
230 | #ifndef KVM_MEM_SLOTS_NUM |
231 | #define KVM_MEM_SLOTS_NUM (KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS) | |
232 | #endif | |
233 | ||
bf3e05bc XG |
234 | /* |
235 | * Note: | |
236 | * memslots are not sorted by id anymore, please use id_to_memslot() | |
237 | * to get the memslot by its id. | |
238 | */ | |
46a26bf5 | 239 | struct kvm_memslots { |
49c7754c | 240 | u64 generation; |
93a5cef0 | 241 | struct kvm_memory_slot memslots[KVM_MEM_SLOTS_NUM]; |
46a26bf5 MT |
242 | }; |
243 | ||
6aa8b732 | 244 | struct kvm { |
aaee2c94 | 245 | spinlock_t mmu_lock; |
79fac95e | 246 | struct mutex slots_lock; |
6d4e4c4f | 247 | struct mm_struct *mm; /* userspace tied to this vm */ |
46a26bf5 | 248 | struct kvm_memslots *memslots; |
bc6678a3 | 249 | struct srcu_struct srcu; |
73880c80 GN |
250 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
251 | u32 bsp_vcpu_id; | |
c5af89b6 | 252 | struct kvm_vcpu *bsp_vcpu; |
73880c80 | 253 | #endif |
fb3f0f51 | 254 | struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; |
73880c80 | 255 | atomic_t online_vcpus; |
217ece61 | 256 | int last_boosted_vcpu; |
133de902 | 257 | struct list_head vm_list; |
60eead79 | 258 | struct mutex lock; |
e93f8a0f | 259 | struct kvm_io_bus *buses[KVM_NR_BUSES]; |
721eecbf GH |
260 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
261 | struct { | |
262 | spinlock_t lock; | |
263 | struct list_head items; | |
264 | } irqfds; | |
d34e6b17 | 265 | struct list_head ioeventfds; |
721eecbf | 266 | #endif |
ba1389b7 | 267 | struct kvm_vm_stat stat; |
d69fb81f | 268 | struct kvm_arch arch; |
d39f13b0 | 269 | atomic_t users_count; |
5f94c174 | 270 | #ifdef KVM_COALESCED_MMIO_PAGE_OFFSET |
5f94c174 | 271 | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; |
2b3c246a SL |
272 | spinlock_t ring_lock; |
273 | struct list_head coalesced_zones; | |
5f94c174 | 274 | #endif |
e930bffe | 275 | |
60eead79 | 276 | struct mutex irq_lock; |
75858a84 | 277 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 MT |
278 | /* |
279 | * Update side is protected by irq_lock and, | |
280 | * if configured, irqfds.lock. | |
281 | */ | |
4b6a2872 | 282 | struct kvm_irq_routing_table __rcu *irq_routing; |
75858a84 | 283 | struct hlist_head mask_notifier_list; |
136bdfee | 284 | struct hlist_head irq_ack_notifier_list; |
75858a84 AK |
285 | #endif |
286 | ||
e930bffe AA |
287 | #ifdef KVM_ARCH_WANT_MMU_NOTIFIER |
288 | struct mmu_notifier mmu_notifier; | |
289 | unsigned long mmu_notifier_seq; | |
290 | long mmu_notifier_count; | |
291 | #endif | |
5c663a15 | 292 | long tlbs_dirty; |
6aa8b732 AK |
293 | }; |
294 | ||
f0242478 RR |
295 | /* The guest did something we don't support. */ |
296 | #define pr_unimpl(vcpu, fmt, ...) \ | |
bd80158a JK |
297 | pr_err_ratelimited("kvm: %i: cpu%i " fmt, \ |
298 | current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__) | |
f0242478 | 299 | |
6aa8b732 AK |
300 | #define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt) |
301 | #define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt) | |
302 | ||
988a2cae GN |
303 | static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i) |
304 | { | |
305 | smp_rmb(); | |
306 | return kvm->vcpus[i]; | |
307 | } | |
308 | ||
309 | #define kvm_for_each_vcpu(idx, vcpup, kvm) \ | |
b42fc3cb JM |
310 | for (idx = 0; \ |
311 | idx < atomic_read(&kvm->online_vcpus) && \ | |
312 | (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \ | |
313 | idx++) | |
988a2cae | 314 | |
be6ba0f0 XG |
315 | #define kvm_for_each_memslot(memslot, slots) \ |
316 | for (memslot = &slots->memslots[0]; \ | |
bf3e05bc XG |
317 | memslot < slots->memslots + KVM_MEM_SLOTS_NUM && memslot->npages;\ |
318 | memslot++) | |
be6ba0f0 | 319 | |
fb3f0f51 RR |
320 | int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id); |
321 | void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); | |
322 | ||
313a3dc7 CO |
323 | void vcpu_load(struct kvm_vcpu *vcpu); |
324 | void vcpu_put(struct kvm_vcpu *vcpu); | |
325 | ||
0ee75bea | 326 | int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, |
c16f862d | 327 | struct module *module); |
cb498ea2 | 328 | void kvm_exit(void); |
6aa8b732 | 329 | |
d39f13b0 IE |
330 | void kvm_get_kvm(struct kvm *kvm); |
331 | void kvm_put_kvm(struct kvm *kvm); | |
be593d62 | 332 | void update_memslots(struct kvm_memslots *slots, struct kvm_memory_slot *new); |
d39f13b0 | 333 | |
90d83dc3 LJ |
334 | static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm) |
335 | { | |
336 | return rcu_dereference_check(kvm->memslots, | |
337 | srcu_read_lock_held(&kvm->srcu) | |
338 | || lockdep_is_held(&kvm->slots_lock)); | |
339 | } | |
340 | ||
28a37544 XG |
341 | static inline struct kvm_memory_slot * |
342 | id_to_memslot(struct kvm_memslots *slots, int id) | |
343 | { | |
bf3e05bc XG |
344 | int i; |
345 | ||
346 | for (i = 0; i < KVM_MEM_SLOTS_NUM; i++) | |
347 | if (slots->memslots[i].id == id) | |
348 | return &slots->memslots[i]; | |
349 | ||
350 | WARN_ON(1); | |
351 | return NULL; | |
28a37544 XG |
352 | } |
353 | ||
6aa8b732 AK |
354 | #define HPA_MSB ((sizeof(hpa_t) * 8) - 1) |
355 | #define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB) | |
356 | static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; } | |
6aa8b732 | 357 | |
cea7bb21 | 358 | extern struct page *bad_page; |
fce92dce XG |
359 | extern struct page *fault_page; |
360 | ||
35149e21 | 361 | extern pfn_t bad_pfn; |
fce92dce | 362 | extern pfn_t fault_pfn; |
6aa8b732 | 363 | |
cea7bb21 | 364 | int is_error_page(struct page *page); |
35149e21 | 365 | int is_error_pfn(pfn_t pfn); |
bf998156 | 366 | int is_hwpoison_pfn(pfn_t pfn); |
edba23e5 | 367 | int is_fault_pfn(pfn_t pfn); |
fce92dce XG |
368 | int is_noslot_pfn(pfn_t pfn); |
369 | int is_invalid_pfn(pfn_t pfn); | |
f9d46eb0 | 370 | int kvm_is_error_hva(unsigned long addr); |
210c7c4d IE |
371 | int kvm_set_memory_region(struct kvm *kvm, |
372 | struct kvm_userspace_memory_region *mem, | |
373 | int user_alloc); | |
f78e0e2e SY |
374 | int __kvm_set_memory_region(struct kvm *kvm, |
375 | struct kvm_userspace_memory_region *mem, | |
376 | int user_alloc); | |
f7784b8e MT |
377 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
378 | struct kvm_memory_slot *memslot, | |
379 | struct kvm_memory_slot old, | |
380 | struct kvm_userspace_memory_region *mem, | |
381 | int user_alloc); | |
382 | void kvm_arch_commit_memory_region(struct kvm *kvm, | |
0de10343 ZX |
383 | struct kvm_userspace_memory_region *mem, |
384 | struct kvm_memory_slot old, | |
385 | int user_alloc); | |
54dee993 | 386 | void kvm_disable_largepages(void); |
34d4cb8f | 387 | void kvm_arch_flush_shadow(struct kvm *kvm); |
a983fb23 | 388 | |
48987781 XG |
389 | int gfn_to_page_many_atomic(struct kvm *kvm, gfn_t gfn, struct page **pages, |
390 | int nr_pages); | |
391 | ||
954bbbc2 | 392 | struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); |
05da4558 | 393 | unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn); |
b4231d61 IE |
394 | void kvm_release_page_clean(struct page *page); |
395 | void kvm_release_page_dirty(struct page *page); | |
35149e21 AL |
396 | void kvm_set_page_dirty(struct page *page); |
397 | void kvm_set_page_accessed(struct page *page); | |
398 | ||
887c08ac | 399 | pfn_t hva_to_pfn_atomic(struct kvm *kvm, unsigned long addr); |
365fb3fd | 400 | pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn); |
612819c3 MT |
401 | pfn_t gfn_to_pfn_async(struct kvm *kvm, gfn_t gfn, bool *async, |
402 | bool write_fault, bool *writable); | |
35149e21 | 403 | pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn); |
612819c3 MT |
404 | pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault, |
405 | bool *writable); | |
506f0d6f MT |
406 | pfn_t gfn_to_pfn_memslot(struct kvm *kvm, |
407 | struct kvm_memory_slot *slot, gfn_t gfn); | |
35149e21 AL |
408 | void kvm_release_pfn_dirty(pfn_t); |
409 | void kvm_release_pfn_clean(pfn_t pfn); | |
410 | void kvm_set_pfn_dirty(pfn_t pfn); | |
411 | void kvm_set_pfn_accessed(pfn_t pfn); | |
412 | void kvm_get_pfn(pfn_t pfn); | |
413 | ||
195aefde IE |
414 | int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, |
415 | int len); | |
7ec54588 MT |
416 | int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data, |
417 | unsigned long len); | |
195aefde | 418 | int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); |
e03b644f GN |
419 | int kvm_read_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
420 | void *data, unsigned long len); | |
195aefde IE |
421 | int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, |
422 | int offset, int len); | |
423 | int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, | |
424 | unsigned long len); | |
49c7754c GN |
425 | int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
426 | void *data, unsigned long len); | |
427 | int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc, | |
428 | gpa_t gpa); | |
195aefde IE |
429 | int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); |
430 | int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); | |
6aa8b732 | 431 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); |
e0d62c7f | 432 | int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); |
8f0b1ab6 | 433 | unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn); |
6aa8b732 | 434 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); |
49c7754c GN |
435 | void mark_page_dirty_in_slot(struct kvm *kvm, struct kvm_memory_slot *memslot, |
436 | gfn_t gfn); | |
6aa8b732 | 437 | |
8776e519 | 438 | void kvm_vcpu_block(struct kvm_vcpu *vcpu); |
d255f4f2 | 439 | void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu); |
6aa8b732 | 440 | void kvm_resched(struct kvm_vcpu *vcpu); |
7702fd1f AK |
441 | void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); |
442 | void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); | |
a4ee1ca4 | 443 | |
d9e368d6 | 444 | void kvm_flush_remote_tlbs(struct kvm *kvm); |
2e53d63a | 445 | void kvm_reload_remote_mmus(struct kvm *kvm); |
6aa8b732 | 446 | |
043405e1 CO |
447 | long kvm_arch_dev_ioctl(struct file *filp, |
448 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 CO |
449 | long kvm_arch_vcpu_ioctl(struct file *filp, |
450 | unsigned int ioctl, unsigned long arg); | |
018d00d2 ZX |
451 | |
452 | int kvm_dev_ioctl_check_extension(long ext); | |
453 | ||
5bb064dc ZX |
454 | int kvm_get_dirty_log(struct kvm *kvm, |
455 | struct kvm_dirty_log *log, int *is_dirty); | |
456 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, | |
457 | struct kvm_dirty_log *log); | |
458 | ||
1fe779f8 CO |
459 | int kvm_vm_ioctl_set_memory_region(struct kvm *kvm, |
460 | struct | |
461 | kvm_userspace_memory_region *mem, | |
462 | int user_alloc); | |
463 | long kvm_arch_vm_ioctl(struct file *filp, | |
464 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 | 465 | |
d0752060 HB |
466 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); |
467 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); | |
468 | ||
8b006791 ZX |
469 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, |
470 | struct kvm_translation *tr); | |
471 | ||
b6c7a5dc HB |
472 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); |
473 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); | |
474 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
475 | struct kvm_sregs *sregs); | |
476 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
477 | struct kvm_sregs *sregs); | |
62d9f0db MT |
478 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
479 | struct kvm_mp_state *mp_state); | |
480 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
481 | struct kvm_mp_state *mp_state); | |
d0bfb940 JK |
482 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
483 | struct kvm_guest_debug *dbg); | |
b6c7a5dc HB |
484 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); |
485 | ||
f8c16bba ZX |
486 | int kvm_arch_init(void *opaque); |
487 | void kvm_arch_exit(void); | |
043405e1 | 488 | |
e9b11c17 ZX |
489 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); |
490 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu); | |
491 | ||
492 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu); | |
493 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
494 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); | |
495 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); | |
26e5215f | 496 | int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu); |
d40ccc62 | 497 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu); |
e9b11c17 ZX |
498 | |
499 | int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu); | |
10474ae8 | 500 | int kvm_arch_hardware_enable(void *garbage); |
e9b11c17 ZX |
501 | void kvm_arch_hardware_disable(void *garbage); |
502 | int kvm_arch_hardware_setup(void); | |
503 | void kvm_arch_hardware_unsetup(void); | |
504 | void kvm_arch_check_processor_compat(void *rtn); | |
1d737c8a | 505 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu); |
e9b11c17 | 506 | |
d19a9cd2 ZX |
507 | void kvm_free_physmem(struct kvm *kvm); |
508 | ||
d89f5eff JK |
509 | #ifndef __KVM_HAVE_ARCH_VM_ALLOC |
510 | static inline struct kvm *kvm_arch_alloc_vm(void) | |
511 | { | |
512 | return kzalloc(sizeof(struct kvm), GFP_KERNEL); | |
513 | } | |
514 | ||
515 | static inline void kvm_arch_free_vm(struct kvm *kvm) | |
516 | { | |
517 | kfree(kvm); | |
518 | } | |
519 | #endif | |
520 | ||
521 | int kvm_arch_init_vm(struct kvm *kvm); | |
d19a9cd2 | 522 | void kvm_arch_destroy_vm(struct kvm *kvm); |
8a98f664 | 523 | void kvm_free_all_assigned_devices(struct kvm *kvm); |
ad8ba2cd | 524 | void kvm_arch_sync_events(struct kvm *kvm); |
e9b11c17 | 525 | |
3d80840d | 526 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu); |
5736199a | 527 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
682c59a3 | 528 | |
c77fb9dc XZ |
529 | int kvm_is_mmio_pfn(pfn_t pfn); |
530 | ||
62c476c7 BAY |
531 | struct kvm_irq_ack_notifier { |
532 | struct hlist_node link; | |
533 | unsigned gsi; | |
534 | void (*irq_acked)(struct kvm_irq_ack_notifier *kian); | |
535 | }; | |
536 | ||
537 | struct kvm_assigned_dev_kernel { | |
538 | struct kvm_irq_ack_notifier ack_notifier; | |
62c476c7 BAY |
539 | struct list_head list; |
540 | int assigned_dev_id; | |
ab9f4ecb | 541 | int host_segnr; |
62c476c7 BAY |
542 | int host_busnr; |
543 | int host_devfn; | |
c1e01514 | 544 | unsigned int entries_nr; |
62c476c7 | 545 | int host_irq; |
defaf158 | 546 | bool host_irq_disabled; |
c1e01514 | 547 | struct msix_entry *host_msix_entries; |
62c476c7 | 548 | int guest_irq; |
0645211c | 549 | struct msix_entry *guest_msix_entries; |
4f906c19 | 550 | unsigned long irq_requested_type; |
5550af4d | 551 | int irq_source_id; |
b653574a | 552 | int flags; |
62c476c7 BAY |
553 | struct pci_dev *dev; |
554 | struct kvm *kvm; | |
0645211c | 555 | spinlock_t intx_lock; |
1e001d49 | 556 | char irq_name[32]; |
f8fcfd77 | 557 | struct pci_saved_state *pci_saved_state; |
62c476c7 | 558 | }; |
75858a84 AK |
559 | |
560 | struct kvm_irq_mask_notifier { | |
561 | void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked); | |
562 | int irq; | |
563 | struct hlist_node link; | |
564 | }; | |
565 | ||
566 | void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq, | |
567 | struct kvm_irq_mask_notifier *kimn); | |
568 | void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq, | |
569 | struct kvm_irq_mask_notifier *kimn); | |
4a994358 GN |
570 | void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin, |
571 | bool mask); | |
75858a84 | 572 | |
46e624b9 GN |
573 | #ifdef __KVM_HAVE_IOAPIC |
574 | void kvm_get_intr_delivery_bitmask(struct kvm_ioapic *ioapic, | |
575 | union kvm_ioapic_redirect_entry *entry, | |
576 | unsigned long *deliver_bitmask); | |
577 | #endif | |
578 | int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level); | |
bd2b53b2 MT |
579 | int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm, |
580 | int irq_source_id, int level); | |
44882eed | 581 | void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin); |
3de42dc0 XZ |
582 | void kvm_register_irq_ack_notifier(struct kvm *kvm, |
583 | struct kvm_irq_ack_notifier *kian); | |
fa40a821 MT |
584 | void kvm_unregister_irq_ack_notifier(struct kvm *kvm, |
585 | struct kvm_irq_ack_notifier *kian); | |
5550af4d SY |
586 | int kvm_request_irq_source_id(struct kvm *kvm); |
587 | void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id); | |
62c476c7 | 588 | |
522c68c4 SY |
589 | /* For vcpu->arch.iommu_flags */ |
590 | #define KVM_IOMMU_CACHE_COHERENCY 0x1 | |
591 | ||
19de40a8 | 592 | #ifdef CONFIG_IOMMU_API |
3ad26d81 | 593 | int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
260782bc | 594 | int kvm_iommu_map_guest(struct kvm *kvm); |
62c476c7 | 595 | int kvm_iommu_unmap_guest(struct kvm *kvm); |
260782bc WH |
596 | int kvm_assign_device(struct kvm *kvm, |
597 | struct kvm_assigned_dev_kernel *assigned_dev); | |
0a920356 WH |
598 | int kvm_deassign_device(struct kvm *kvm, |
599 | struct kvm_assigned_dev_kernel *assigned_dev); | |
19de40a8 | 600 | #else /* CONFIG_IOMMU_API */ |
62c476c7 | 601 | static inline int kvm_iommu_map_pages(struct kvm *kvm, |
d7a79b6c | 602 | struct kvm_memory_slot *slot) |
62c476c7 BAY |
603 | { |
604 | return 0; | |
605 | } | |
606 | ||
260782bc | 607 | static inline int kvm_iommu_map_guest(struct kvm *kvm) |
62c476c7 BAY |
608 | { |
609 | return -ENODEV; | |
610 | } | |
611 | ||
612 | static inline int kvm_iommu_unmap_guest(struct kvm *kvm) | |
613 | { | |
614 | return 0; | |
615 | } | |
260782bc WH |
616 | |
617 | static inline int kvm_assign_device(struct kvm *kvm, | |
618 | struct kvm_assigned_dev_kernel *assigned_dev) | |
619 | { | |
620 | return 0; | |
621 | } | |
0a920356 WH |
622 | |
623 | static inline int kvm_deassign_device(struct kvm *kvm, | |
624 | struct kvm_assigned_dev_kernel *assigned_dev) | |
625 | { | |
626 | return 0; | |
627 | } | |
19de40a8 | 628 | #endif /* CONFIG_IOMMU_API */ |
62c476c7 | 629 | |
d172fcd3 LV |
630 | static inline void kvm_guest_enter(void) |
631 | { | |
8fa22068 | 632 | BUG_ON(preemptible()); |
e56a7a28 | 633 | account_system_vtime(current); |
d172fcd3 | 634 | current->flags |= PF_VCPU; |
8fa22068 GN |
635 | /* KVM does not hold any references to rcu protected data when it |
636 | * switches CPU into a guest mode. In fact switching to a guest mode | |
637 | * is very similar to exiting to userspase from rcu point of view. In | |
638 | * addition CPU may stay in a guest mode for quite a long time (up to | |
639 | * one time slice). Lets treat guest mode as quiescent state, just like | |
640 | * we do with user-mode execution. | |
641 | */ | |
642 | rcu_virt_note_context_switch(smp_processor_id()); | |
d172fcd3 LV |
643 | } |
644 | ||
645 | static inline void kvm_guest_exit(void) | |
646 | { | |
e56a7a28 | 647 | account_system_vtime(current); |
d172fcd3 LV |
648 | current->flags &= ~PF_VCPU; |
649 | } | |
650 | ||
0ee8dcb8 XG |
651 | static inline int memslot_id(struct kvm *kvm, gfn_t gfn) |
652 | { | |
653 | return gfn_to_memslot(kvm, gfn)->id; | |
654 | } | |
655 | ||
887c08ac XG |
656 | static inline unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, |
657 | gfn_t gfn) | |
658 | { | |
659 | return slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE; | |
660 | } | |
661 | ||
1755fbcc AK |
662 | static inline gpa_t gfn_to_gpa(gfn_t gfn) |
663 | { | |
664 | return (gpa_t)gfn << PAGE_SHIFT; | |
665 | } | |
6aa8b732 | 666 | |
c30a358d JR |
667 | static inline gfn_t gpa_to_gfn(gpa_t gpa) |
668 | { | |
669 | return (gfn_t)(gpa >> PAGE_SHIFT); | |
670 | } | |
671 | ||
62c476c7 BAY |
672 | static inline hpa_t pfn_to_hpa(pfn_t pfn) |
673 | { | |
674 | return (hpa_t)pfn << PAGE_SHIFT; | |
675 | } | |
676 | ||
2f599714 | 677 | static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu) |
2f52d58c AK |
678 | { |
679 | set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests); | |
680 | } | |
681 | ||
ba1389b7 AK |
682 | enum kvm_stat_kind { |
683 | KVM_STAT_VM, | |
684 | KVM_STAT_VCPU, | |
685 | }; | |
686 | ||
417bc304 HB |
687 | struct kvm_stats_debugfs_item { |
688 | const char *name; | |
689 | int offset; | |
ba1389b7 | 690 | enum kvm_stat_kind kind; |
417bc304 HB |
691 | struct dentry *dentry; |
692 | }; | |
693 | extern struct kvm_stats_debugfs_item debugfs_entries[]; | |
76f7c879 | 694 | extern struct dentry *kvm_debugfs_dir; |
d4c9ff2d | 695 | |
e930bffe AA |
696 | #ifdef KVM_ARCH_WANT_MMU_NOTIFIER |
697 | static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_seq) | |
698 | { | |
699 | if (unlikely(vcpu->kvm->mmu_notifier_count)) | |
700 | return 1; | |
701 | /* | |
702 | * Both reads happen under the mmu_lock and both values are | |
703 | * modified under mmu_lock, so there's no need of smb_rmb() | |
704 | * here in between, otherwise mmu_notifier_count should be | |
705 | * read before mmu_notifier_seq, see | |
706 | * mmu_notifier_invalidate_range_end write side. | |
707 | */ | |
708 | if (vcpu->kvm->mmu_notifier_seq != mmu_seq) | |
709 | return 1; | |
710 | return 0; | |
711 | } | |
712 | #endif | |
713 | ||
399ec807 AK |
714 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
715 | ||
716 | #define KVM_MAX_IRQ_ROUTES 1024 | |
717 | ||
718 | int kvm_setup_default_irq_routing(struct kvm *kvm); | |
719 | int kvm_set_irq_routing(struct kvm *kvm, | |
720 | const struct kvm_irq_routing_entry *entries, | |
721 | unsigned nr, | |
722 | unsigned flags); | |
723 | void kvm_free_irq_routing(struct kvm *kvm); | |
724 | ||
725 | #else | |
726 | ||
727 | static inline void kvm_free_irq_routing(struct kvm *kvm) {} | |
728 | ||
729 | #endif | |
730 | ||
721eecbf GH |
731 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
732 | ||
d34e6b17 | 733 | void kvm_eventfd_init(struct kvm *kvm); |
721eecbf GH |
734 | int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags); |
735 | void kvm_irqfd_release(struct kvm *kvm); | |
bd2b53b2 | 736 | void kvm_irq_routing_update(struct kvm *, struct kvm_irq_routing_table *); |
d34e6b17 | 737 | int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args); |
721eecbf GH |
738 | |
739 | #else | |
740 | ||
d34e6b17 | 741 | static inline void kvm_eventfd_init(struct kvm *kvm) {} |
bd2b53b2 | 742 | |
721eecbf GH |
743 | static inline int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags) |
744 | { | |
745 | return -EINVAL; | |
746 | } | |
747 | ||
748 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
bd2b53b2 | 749 | |
27923eb1 | 750 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 MT |
751 | static inline void kvm_irq_routing_update(struct kvm *kvm, |
752 | struct kvm_irq_routing_table *irq_rt) | |
753 | { | |
754 | rcu_assign_pointer(kvm->irq_routing, irq_rt); | |
755 | } | |
27923eb1 | 756 | #endif |
bd2b53b2 | 757 | |
d34e6b17 GH |
758 | static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) |
759 | { | |
760 | return -ENOSYS; | |
761 | } | |
721eecbf GH |
762 | |
763 | #endif /* CONFIG_HAVE_KVM_EVENTFD */ | |
764 | ||
73880c80 | 765 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
c5af89b6 GN |
766 | static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu) |
767 | { | |
d3efc8ef | 768 | return vcpu->kvm->bsp_vcpu_id == vcpu->vcpu_id; |
c5af89b6 | 769 | } |
6aa8b732 | 770 | #endif |
bfd99ff5 AK |
771 | |
772 | #ifdef __KVM_HAVE_DEVICE_ASSIGNMENT | |
773 | ||
774 | long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, | |
775 | unsigned long arg); | |
776 | ||
777 | #else | |
778 | ||
779 | static inline long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, | |
780 | unsigned long arg) | |
781 | { | |
782 | return -ENOTTY; | |
783 | } | |
784 | ||
73880c80 | 785 | #endif |
bfd99ff5 | 786 | |
a8eeb04a AK |
787 | static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu) |
788 | { | |
789 | set_bit(req, &vcpu->requests); | |
790 | } | |
791 | ||
a8eeb04a AK |
792 | static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu) |
793 | { | |
0719837c AK |
794 | if (test_bit(req, &vcpu->requests)) { |
795 | clear_bit(req, &vcpu->requests); | |
796 | return true; | |
797 | } else { | |
798 | return false; | |
799 | } | |
a8eeb04a AK |
800 | } |
801 | ||
bfd99ff5 AK |
802 | #endif |
803 |