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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> |
15ad7146 | 17 | #include <linux/preempt.h> |
0937c48d | 18 | #include <linux/msi.h> |
d89f5eff | 19 | #include <linux/slab.h> |
bd2b53b2 | 20 | #include <linux/rcupdate.h> |
e8edc6e0 | 21 | #include <asm/signal.h> |
6aa8b732 | 22 | |
6aa8b732 | 23 | #include <linux/kvm.h> |
102d8325 | 24 | #include <linux/kvm_para.h> |
6aa8b732 | 25 | |
edf88417 | 26 | #include <linux/kvm_types.h> |
d77a39d9 | 27 | |
edf88417 | 28 | #include <asm/kvm_host.h> |
d657a98e | 29 | |
cef4dea0 AK |
30 | #ifndef KVM_MMIO_SIZE |
31 | #define KVM_MMIO_SIZE 8 | |
32 | #endif | |
33 | ||
d9e368d6 AK |
34 | /* |
35 | * vcpu->requests bit members | |
36 | */ | |
3176bc3e | 37 | #define KVM_REQ_TLB_FLUSH 0 |
2f52d58c | 38 | #define KVM_REQ_MIGRATE_TIMER 1 |
b209749f | 39 | #define KVM_REQ_REPORT_TPR_ACCESS 2 |
2e53d63a | 40 | #define KVM_REQ_MMU_RELOAD 3 |
71c4dfaf | 41 | #define KVM_REQ_TRIPLE_FAULT 4 |
06e05645 | 42 | #define KVM_REQ_PENDING_TIMER 5 |
d7690175 | 43 | #define KVM_REQ_UNHALT 6 |
4731d4c7 | 44 | #define KVM_REQ_MMU_SYNC 7 |
34c238a1 | 45 | #define KVM_REQ_CLOCK_UPDATE 8 |
32f88400 | 46 | #define KVM_REQ_KICK 9 |
02daab21 | 47 | #define KVM_REQ_DEACTIVATE_FPU 10 |
3842d135 | 48 | #define KVM_REQ_EVENT 11 |
af585b92 | 49 | #define KVM_REQ_APF_HALT 12 |
6aa8b732 | 50 | |
5550af4d SY |
51 | #define KVM_USERSPACE_IRQ_SOURCE_ID 0 |
52 | ||
6c474694 | 53 | struct kvm; |
6aa8b732 | 54 | struct kvm_vcpu; |
c16f862d | 55 | extern struct kmem_cache *kvm_vcpu_cache; |
6aa8b732 | 56 | |
2eeb2e94 GH |
57 | /* |
58 | * It would be nice to use something smarter than a linear search, TBD... | |
59 | * Thankfully we dont expect many devices to register (famous last words :), | |
60 | * so until then it will suffice. At least its abstracted so we can change | |
61 | * in one place. | |
62 | */ | |
63 | struct kvm_io_bus { | |
64 | int dev_count; | |
e80e2a60 | 65 | #define NR_IOBUS_DEVS 200 |
2eeb2e94 GH |
66 | struct kvm_io_device *devs[NR_IOBUS_DEVS]; |
67 | }; | |
68 | ||
e93f8a0f MT |
69 | enum kvm_bus { |
70 | KVM_MMIO_BUS, | |
71 | KVM_PIO_BUS, | |
72 | KVM_NR_BUSES | |
73 | }; | |
74 | ||
75 | int kvm_io_bus_write(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, | |
76 | int len, const void *val); | |
77 | int kvm_io_bus_read(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, int len, | |
bda9020e | 78 | void *val); |
e93f8a0f | 79 | int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, |
090b7aff | 80 | struct kvm_io_device *dev); |
e93f8a0f MT |
81 | int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx, |
82 | struct kvm_io_device *dev); | |
2eeb2e94 | 83 | |
af585b92 GN |
84 | #ifdef CONFIG_KVM_ASYNC_PF |
85 | struct kvm_async_pf { | |
86 | struct work_struct work; | |
87 | struct list_head link; | |
88 | struct list_head queue; | |
89 | struct kvm_vcpu *vcpu; | |
90 | struct mm_struct *mm; | |
91 | gva_t gva; | |
92 | unsigned long addr; | |
93 | struct kvm_arch_async_pf arch; | |
94 | struct page *page; | |
95 | bool done; | |
96 | }; | |
97 | ||
98 | void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu); | |
99 | void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu); | |
100 | int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, gfn_t gfn, | |
101 | struct kvm_arch_async_pf *arch); | |
344d9588 | 102 | int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu); |
af585b92 GN |
103 | #endif |
104 | ||
6b7e2d09 XG |
105 | enum { |
106 | OUTSIDE_GUEST_MODE, | |
107 | IN_GUEST_MODE, | |
108 | EXITING_GUEST_MODE | |
109 | }; | |
110 | ||
d17fbbf7 ZX |
111 | struct kvm_vcpu { |
112 | struct kvm *kvm; | |
31bb117e | 113 | #ifdef CONFIG_PREEMPT_NOTIFIERS |
d17fbbf7 | 114 | struct preempt_notifier preempt_notifier; |
31bb117e | 115 | #endif |
6b7e2d09 | 116 | int cpu; |
d17fbbf7 | 117 | int vcpu_id; |
6b7e2d09 XG |
118 | int srcu_idx; |
119 | int mode; | |
d17fbbf7 | 120 | unsigned long requests; |
d0bfb940 | 121 | unsigned long guest_debug; |
6b7e2d09 XG |
122 | |
123 | struct mutex mutex; | |
124 | struct kvm_run *run; | |
f656ce01 | 125 | |
d17fbbf7 | 126 | int fpu_active; |
2acf923e | 127 | int guest_fpu_loaded, guest_xcr0_loaded; |
d17fbbf7 | 128 | wait_queue_head_t wq; |
34bb10b7 | 129 | struct pid *pid; |
d17fbbf7 ZX |
130 | int sigset_active; |
131 | sigset_t sigset; | |
132 | struct kvm_vcpu_stat stat; | |
133 | ||
34c16eec | 134 | #ifdef CONFIG_HAS_IOMEM |
d17fbbf7 ZX |
135 | int mmio_needed; |
136 | int mmio_read_completed; | |
137 | int mmio_is_write; | |
138 | int mmio_size; | |
cef4dea0 AK |
139 | int mmio_index; |
140 | unsigned char mmio_data[KVM_MMIO_SIZE]; | |
6aa8b732 | 141 | gpa_t mmio_phys_addr; |
34c16eec | 142 | #endif |
1165f5fe | 143 | |
af585b92 GN |
144 | #ifdef CONFIG_KVM_ASYNC_PF |
145 | struct { | |
146 | u32 queued; | |
147 | struct list_head queue; | |
148 | struct list_head done; | |
149 | spinlock_t lock; | |
150 | } async_pf; | |
151 | #endif | |
152 | ||
d657a98e ZX |
153 | struct kvm_vcpu_arch arch; |
154 | }; | |
155 | ||
6b7e2d09 XG |
156 | static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu) |
157 | { | |
158 | return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE); | |
159 | } | |
160 | ||
660c22c4 TY |
161 | /* |
162 | * Some of the bitops functions do not support too long bitmaps. | |
163 | * This number must be determined not to exceed such limits. | |
164 | */ | |
165 | #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1) | |
166 | ||
d4dbf470 TY |
167 | struct kvm_lpage_info { |
168 | unsigned long rmap_pde; | |
169 | int write_count; | |
170 | }; | |
171 | ||
6aa8b732 AK |
172 | struct kvm_memory_slot { |
173 | gfn_t base_gfn; | |
174 | unsigned long npages; | |
175 | unsigned long flags; | |
290fc38d | 176 | unsigned long *rmap; |
6aa8b732 | 177 | unsigned long *dirty_bitmap; |
515a0127 | 178 | unsigned long *dirty_bitmap_head; |
d4dbf470 | 179 | struct kvm_lpage_info *lpage_info[KVM_NR_PAGE_SIZES - 1]; |
8a7ae055 | 180 | unsigned long userspace_addr; |
80b14b5b | 181 | int user_alloc; |
e36d96f7 | 182 | int id; |
6aa8b732 AK |
183 | }; |
184 | ||
87bf6e7d TY |
185 | static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot) |
186 | { | |
187 | return ALIGN(memslot->npages, BITS_PER_LONG) / 8; | |
188 | } | |
189 | ||
399ec807 AK |
190 | struct kvm_kernel_irq_routing_entry { |
191 | u32 gsi; | |
5116d8f6 | 192 | u32 type; |
4925663a | 193 | int (*set)(struct kvm_kernel_irq_routing_entry *e, |
1a6e4a8c | 194 | struct kvm *kvm, int irq_source_id, int level); |
399ec807 AK |
195 | union { |
196 | struct { | |
197 | unsigned irqchip; | |
198 | unsigned pin; | |
199 | } irqchip; | |
79950e10 | 200 | struct msi_msg msi; |
399ec807 | 201 | }; |
46e624b9 GN |
202 | struct hlist_node link; |
203 | }; | |
204 | ||
3e71f88b GN |
205 | #ifdef __KVM_HAVE_IOAPIC |
206 | ||
46e624b9 | 207 | struct kvm_irq_routing_table { |
3e71f88b | 208 | int chip[KVM_NR_IRQCHIPS][KVM_IOAPIC_NUM_PINS]; |
46e624b9 GN |
209 | struct kvm_kernel_irq_routing_entry *rt_entries; |
210 | u32 nr_rt_entries; | |
211 | /* | |
212 | * Array indexed by gsi. Each entry contains list of irq chips | |
213 | * the gsi is connected to. | |
214 | */ | |
215 | struct hlist_head map[0]; | |
399ec807 AK |
216 | }; |
217 | ||
3e71f88b GN |
218 | #else |
219 | ||
220 | struct kvm_irq_routing_table {}; | |
221 | ||
222 | #endif | |
223 | ||
46a26bf5 MT |
224 | struct kvm_memslots { |
225 | int nmemslots; | |
49c7754c | 226 | u64 generation; |
46a26bf5 MT |
227 | struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS + |
228 | KVM_PRIVATE_MEM_SLOTS]; | |
229 | }; | |
230 | ||
6aa8b732 | 231 | struct kvm { |
aaee2c94 | 232 | spinlock_t mmu_lock; |
79fac95e | 233 | struct mutex slots_lock; |
6d4e4c4f | 234 | struct mm_struct *mm; /* userspace tied to this vm */ |
46a26bf5 | 235 | struct kvm_memslots *memslots; |
bc6678a3 | 236 | struct srcu_struct srcu; |
73880c80 GN |
237 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
238 | u32 bsp_vcpu_id; | |
c5af89b6 | 239 | struct kvm_vcpu *bsp_vcpu; |
73880c80 | 240 | #endif |
fb3f0f51 | 241 | struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; |
73880c80 | 242 | atomic_t online_vcpus; |
217ece61 | 243 | int last_boosted_vcpu; |
133de902 | 244 | struct list_head vm_list; |
60eead79 | 245 | struct mutex lock; |
e93f8a0f | 246 | struct kvm_io_bus *buses[KVM_NR_BUSES]; |
721eecbf GH |
247 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
248 | struct { | |
249 | spinlock_t lock; | |
250 | struct list_head items; | |
251 | } irqfds; | |
d34e6b17 | 252 | struct list_head ioeventfds; |
721eecbf | 253 | #endif |
ba1389b7 | 254 | struct kvm_vm_stat stat; |
d69fb81f | 255 | struct kvm_arch arch; |
d39f13b0 | 256 | atomic_t users_count; |
5f94c174 LV |
257 | #ifdef KVM_COALESCED_MMIO_PAGE_OFFSET |
258 | struct kvm_coalesced_mmio_dev *coalesced_mmio_dev; | |
259 | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; | |
260 | #endif | |
e930bffe | 261 | |
60eead79 | 262 | struct mutex irq_lock; |
75858a84 | 263 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 MT |
264 | /* |
265 | * Update side is protected by irq_lock and, | |
266 | * if configured, irqfds.lock. | |
267 | */ | |
4b6a2872 | 268 | struct kvm_irq_routing_table __rcu *irq_routing; |
75858a84 | 269 | struct hlist_head mask_notifier_list; |
136bdfee | 270 | struct hlist_head irq_ack_notifier_list; |
75858a84 AK |
271 | #endif |
272 | ||
e930bffe AA |
273 | #ifdef KVM_ARCH_WANT_MMU_NOTIFIER |
274 | struct mmu_notifier mmu_notifier; | |
275 | unsigned long mmu_notifier_seq; | |
276 | long mmu_notifier_count; | |
277 | #endif | |
5c663a15 | 278 | long tlbs_dirty; |
6aa8b732 AK |
279 | }; |
280 | ||
f0242478 RR |
281 | /* The guest did something we don't support. */ |
282 | #define pr_unimpl(vcpu, fmt, ...) \ | |
283 | do { \ | |
284 | if (printk_ratelimit()) \ | |
285 | printk(KERN_ERR "kvm: %i: cpu%i " fmt, \ | |
286 | current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \ | |
d77c26fc | 287 | } while (0) |
f0242478 | 288 | |
6aa8b732 AK |
289 | #define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt) |
290 | #define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt) | |
291 | ||
988a2cae GN |
292 | static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i) |
293 | { | |
294 | smp_rmb(); | |
295 | return kvm->vcpus[i]; | |
296 | } | |
297 | ||
298 | #define kvm_for_each_vcpu(idx, vcpup, kvm) \ | |
b42fc3cb JM |
299 | for (idx = 0; \ |
300 | idx < atomic_read(&kvm->online_vcpus) && \ | |
301 | (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \ | |
302 | idx++) | |
988a2cae | 303 | |
fb3f0f51 RR |
304 | int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id); |
305 | void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); | |
306 | ||
313a3dc7 CO |
307 | void vcpu_load(struct kvm_vcpu *vcpu); |
308 | void vcpu_put(struct kvm_vcpu *vcpu); | |
309 | ||
0ee75bea | 310 | int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, |
c16f862d | 311 | struct module *module); |
cb498ea2 | 312 | void kvm_exit(void); |
6aa8b732 | 313 | |
d39f13b0 IE |
314 | void kvm_get_kvm(struct kvm *kvm); |
315 | void kvm_put_kvm(struct kvm *kvm); | |
316 | ||
90d83dc3 LJ |
317 | static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm) |
318 | { | |
319 | return rcu_dereference_check(kvm->memslots, | |
320 | srcu_read_lock_held(&kvm->srcu) | |
321 | || lockdep_is_held(&kvm->slots_lock)); | |
322 | } | |
323 | ||
6aa8b732 AK |
324 | #define HPA_MSB ((sizeof(hpa_t) * 8) - 1) |
325 | #define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB) | |
326 | static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; } | |
6aa8b732 | 327 | |
cea7bb21 | 328 | extern struct page *bad_page; |
35149e21 | 329 | extern pfn_t bad_pfn; |
6aa8b732 | 330 | |
cea7bb21 | 331 | int is_error_page(struct page *page); |
35149e21 | 332 | int is_error_pfn(pfn_t pfn); |
bf998156 | 333 | int is_hwpoison_pfn(pfn_t pfn); |
edba23e5 | 334 | int is_fault_pfn(pfn_t pfn); |
f9d46eb0 | 335 | int kvm_is_error_hva(unsigned long addr); |
210c7c4d IE |
336 | int kvm_set_memory_region(struct kvm *kvm, |
337 | struct kvm_userspace_memory_region *mem, | |
338 | int user_alloc); | |
f78e0e2e SY |
339 | int __kvm_set_memory_region(struct kvm *kvm, |
340 | struct kvm_userspace_memory_region *mem, | |
341 | int user_alloc); | |
f7784b8e MT |
342 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
343 | struct kvm_memory_slot *memslot, | |
344 | struct kvm_memory_slot old, | |
345 | struct kvm_userspace_memory_region *mem, | |
346 | int user_alloc); | |
347 | void kvm_arch_commit_memory_region(struct kvm *kvm, | |
0de10343 ZX |
348 | struct kvm_userspace_memory_region *mem, |
349 | struct kvm_memory_slot old, | |
350 | int user_alloc); | |
54dee993 | 351 | void kvm_disable_largepages(void); |
34d4cb8f | 352 | void kvm_arch_flush_shadow(struct kvm *kvm); |
a983fb23 | 353 | |
48987781 XG |
354 | int gfn_to_page_many_atomic(struct kvm *kvm, gfn_t gfn, struct page **pages, |
355 | int nr_pages); | |
356 | ||
954bbbc2 | 357 | struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); |
05da4558 | 358 | unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn); |
b4231d61 IE |
359 | void kvm_release_page_clean(struct page *page); |
360 | void kvm_release_page_dirty(struct page *page); | |
35149e21 AL |
361 | void kvm_set_page_dirty(struct page *page); |
362 | void kvm_set_page_accessed(struct page *page); | |
363 | ||
887c08ac | 364 | pfn_t hva_to_pfn_atomic(struct kvm *kvm, unsigned long addr); |
365fb3fd | 365 | pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn); |
612819c3 MT |
366 | pfn_t gfn_to_pfn_async(struct kvm *kvm, gfn_t gfn, bool *async, |
367 | bool write_fault, bool *writable); | |
35149e21 | 368 | pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn); |
612819c3 MT |
369 | pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault, |
370 | bool *writable); | |
506f0d6f MT |
371 | pfn_t gfn_to_pfn_memslot(struct kvm *kvm, |
372 | struct kvm_memory_slot *slot, gfn_t gfn); | |
35149e21 AL |
373 | void kvm_release_pfn_dirty(pfn_t); |
374 | void kvm_release_pfn_clean(pfn_t pfn); | |
375 | void kvm_set_pfn_dirty(pfn_t pfn); | |
376 | void kvm_set_pfn_accessed(pfn_t pfn); | |
377 | void kvm_get_pfn(pfn_t pfn); | |
378 | ||
195aefde IE |
379 | int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, |
380 | int len); | |
7ec54588 MT |
381 | int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data, |
382 | unsigned long len); | |
195aefde | 383 | int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); |
e03b644f GN |
384 | int kvm_read_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
385 | void *data, unsigned long len); | |
195aefde IE |
386 | int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, |
387 | int offset, int len); | |
388 | int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, | |
389 | unsigned long len); | |
49c7754c GN |
390 | int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
391 | void *data, unsigned long len); | |
392 | int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc, | |
393 | gpa_t gpa); | |
195aefde IE |
394 | int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); |
395 | int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); | |
6aa8b732 | 396 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); |
e0d62c7f | 397 | int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); |
8f0b1ab6 | 398 | unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn); |
6aa8b732 | 399 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); |
49c7754c GN |
400 | void mark_page_dirty_in_slot(struct kvm *kvm, struct kvm_memory_slot *memslot, |
401 | gfn_t gfn); | |
6aa8b732 | 402 | |
8776e519 | 403 | void kvm_vcpu_block(struct kvm_vcpu *vcpu); |
d255f4f2 | 404 | void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu); |
6aa8b732 | 405 | void kvm_resched(struct kvm_vcpu *vcpu); |
7702fd1f AK |
406 | void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); |
407 | void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); | |
a4ee1ca4 | 408 | |
d9e368d6 | 409 | void kvm_flush_remote_tlbs(struct kvm *kvm); |
2e53d63a | 410 | void kvm_reload_remote_mmus(struct kvm *kvm); |
6aa8b732 | 411 | |
043405e1 CO |
412 | long kvm_arch_dev_ioctl(struct file *filp, |
413 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 CO |
414 | long kvm_arch_vcpu_ioctl(struct file *filp, |
415 | unsigned int ioctl, unsigned long arg); | |
018d00d2 ZX |
416 | |
417 | int kvm_dev_ioctl_check_extension(long ext); | |
418 | ||
5bb064dc ZX |
419 | int kvm_get_dirty_log(struct kvm *kvm, |
420 | struct kvm_dirty_log *log, int *is_dirty); | |
421 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, | |
422 | struct kvm_dirty_log *log); | |
423 | ||
1fe779f8 CO |
424 | int kvm_vm_ioctl_set_memory_region(struct kvm *kvm, |
425 | struct | |
426 | kvm_userspace_memory_region *mem, | |
427 | int user_alloc); | |
428 | long kvm_arch_vm_ioctl(struct file *filp, | |
429 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 | 430 | |
d0752060 HB |
431 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); |
432 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); | |
433 | ||
8b006791 ZX |
434 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, |
435 | struct kvm_translation *tr); | |
436 | ||
b6c7a5dc HB |
437 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); |
438 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); | |
439 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
440 | struct kvm_sregs *sregs); | |
441 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
442 | struct kvm_sregs *sregs); | |
62d9f0db MT |
443 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
444 | struct kvm_mp_state *mp_state); | |
445 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
446 | struct kvm_mp_state *mp_state); | |
d0bfb940 JK |
447 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
448 | struct kvm_guest_debug *dbg); | |
b6c7a5dc HB |
449 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); |
450 | ||
f8c16bba ZX |
451 | int kvm_arch_init(void *opaque); |
452 | void kvm_arch_exit(void); | |
043405e1 | 453 | |
e9b11c17 ZX |
454 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); |
455 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu); | |
456 | ||
457 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu); | |
458 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
459 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); | |
460 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); | |
26e5215f | 461 | int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu); |
d40ccc62 | 462 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu); |
e9b11c17 ZX |
463 | |
464 | int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu); | |
10474ae8 | 465 | int kvm_arch_hardware_enable(void *garbage); |
e9b11c17 ZX |
466 | void kvm_arch_hardware_disable(void *garbage); |
467 | int kvm_arch_hardware_setup(void); | |
468 | void kvm_arch_hardware_unsetup(void); | |
469 | void kvm_arch_check_processor_compat(void *rtn); | |
1d737c8a | 470 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu); |
e9b11c17 | 471 | |
d19a9cd2 ZX |
472 | void kvm_free_physmem(struct kvm *kvm); |
473 | ||
d89f5eff JK |
474 | #ifndef __KVM_HAVE_ARCH_VM_ALLOC |
475 | static inline struct kvm *kvm_arch_alloc_vm(void) | |
476 | { | |
477 | return kzalloc(sizeof(struct kvm), GFP_KERNEL); | |
478 | } | |
479 | ||
480 | static inline void kvm_arch_free_vm(struct kvm *kvm) | |
481 | { | |
482 | kfree(kvm); | |
483 | } | |
484 | #endif | |
485 | ||
486 | int kvm_arch_init_vm(struct kvm *kvm); | |
d19a9cd2 | 487 | void kvm_arch_destroy_vm(struct kvm *kvm); |
8a98f664 | 488 | void kvm_free_all_assigned_devices(struct kvm *kvm); |
ad8ba2cd | 489 | void kvm_arch_sync_events(struct kvm *kvm); |
e9b11c17 | 490 | |
3d80840d | 491 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu); |
5736199a | 492 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
682c59a3 | 493 | |
c77fb9dc XZ |
494 | int kvm_is_mmio_pfn(pfn_t pfn); |
495 | ||
62c476c7 BAY |
496 | struct kvm_irq_ack_notifier { |
497 | struct hlist_node link; | |
498 | unsigned gsi; | |
499 | void (*irq_acked)(struct kvm_irq_ack_notifier *kian); | |
500 | }; | |
501 | ||
502 | struct kvm_assigned_dev_kernel { | |
503 | struct kvm_irq_ack_notifier ack_notifier; | |
62c476c7 BAY |
504 | struct list_head list; |
505 | int assigned_dev_id; | |
ab9f4ecb | 506 | int host_segnr; |
62c476c7 BAY |
507 | int host_busnr; |
508 | int host_devfn; | |
c1e01514 | 509 | unsigned int entries_nr; |
62c476c7 | 510 | int host_irq; |
defaf158 | 511 | bool host_irq_disabled; |
c1e01514 | 512 | struct msix_entry *host_msix_entries; |
62c476c7 | 513 | int guest_irq; |
0645211c | 514 | struct msix_entry *guest_msix_entries; |
4f906c19 | 515 | unsigned long irq_requested_type; |
5550af4d | 516 | int irq_source_id; |
b653574a | 517 | int flags; |
62c476c7 BAY |
518 | struct pci_dev *dev; |
519 | struct kvm *kvm; | |
0645211c | 520 | spinlock_t intx_lock; |
1e001d49 | 521 | char irq_name[32]; |
f8fcfd77 | 522 | struct pci_saved_state *pci_saved_state; |
62c476c7 | 523 | }; |
75858a84 AK |
524 | |
525 | struct kvm_irq_mask_notifier { | |
526 | void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked); | |
527 | int irq; | |
528 | struct hlist_node link; | |
529 | }; | |
530 | ||
531 | void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq, | |
532 | struct kvm_irq_mask_notifier *kimn); | |
533 | void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq, | |
534 | struct kvm_irq_mask_notifier *kimn); | |
4a994358 GN |
535 | void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin, |
536 | bool mask); | |
75858a84 | 537 | |
46e624b9 GN |
538 | #ifdef __KVM_HAVE_IOAPIC |
539 | void kvm_get_intr_delivery_bitmask(struct kvm_ioapic *ioapic, | |
540 | union kvm_ioapic_redirect_entry *entry, | |
541 | unsigned long *deliver_bitmask); | |
542 | #endif | |
543 | int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level); | |
bd2b53b2 MT |
544 | int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm, |
545 | int irq_source_id, int level); | |
44882eed | 546 | void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin); |
3de42dc0 XZ |
547 | void kvm_register_irq_ack_notifier(struct kvm *kvm, |
548 | struct kvm_irq_ack_notifier *kian); | |
fa40a821 MT |
549 | void kvm_unregister_irq_ack_notifier(struct kvm *kvm, |
550 | struct kvm_irq_ack_notifier *kian); | |
5550af4d SY |
551 | int kvm_request_irq_source_id(struct kvm *kvm); |
552 | void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id); | |
62c476c7 | 553 | |
522c68c4 SY |
554 | /* For vcpu->arch.iommu_flags */ |
555 | #define KVM_IOMMU_CACHE_COHERENCY 0x1 | |
556 | ||
19de40a8 | 557 | #ifdef CONFIG_IOMMU_API |
3ad26d81 | 558 | int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
260782bc | 559 | int kvm_iommu_map_guest(struct kvm *kvm); |
62c476c7 | 560 | int kvm_iommu_unmap_guest(struct kvm *kvm); |
260782bc WH |
561 | int kvm_assign_device(struct kvm *kvm, |
562 | struct kvm_assigned_dev_kernel *assigned_dev); | |
0a920356 WH |
563 | int kvm_deassign_device(struct kvm *kvm, |
564 | struct kvm_assigned_dev_kernel *assigned_dev); | |
19de40a8 | 565 | #else /* CONFIG_IOMMU_API */ |
62c476c7 | 566 | static inline int kvm_iommu_map_pages(struct kvm *kvm, |
d7a79b6c | 567 | struct kvm_memory_slot *slot) |
62c476c7 BAY |
568 | { |
569 | return 0; | |
570 | } | |
571 | ||
260782bc | 572 | static inline int kvm_iommu_map_guest(struct kvm *kvm) |
62c476c7 BAY |
573 | { |
574 | return -ENODEV; | |
575 | } | |
576 | ||
577 | static inline int kvm_iommu_unmap_guest(struct kvm *kvm) | |
578 | { | |
579 | return 0; | |
580 | } | |
260782bc WH |
581 | |
582 | static inline int kvm_assign_device(struct kvm *kvm, | |
583 | struct kvm_assigned_dev_kernel *assigned_dev) | |
584 | { | |
585 | return 0; | |
586 | } | |
0a920356 WH |
587 | |
588 | static inline int kvm_deassign_device(struct kvm *kvm, | |
589 | struct kvm_assigned_dev_kernel *assigned_dev) | |
590 | { | |
591 | return 0; | |
592 | } | |
19de40a8 | 593 | #endif /* CONFIG_IOMMU_API */ |
62c476c7 | 594 | |
d172fcd3 LV |
595 | static inline void kvm_guest_enter(void) |
596 | { | |
8fa22068 | 597 | BUG_ON(preemptible()); |
e56a7a28 | 598 | account_system_vtime(current); |
d172fcd3 | 599 | current->flags |= PF_VCPU; |
8fa22068 GN |
600 | /* KVM does not hold any references to rcu protected data when it |
601 | * switches CPU into a guest mode. In fact switching to a guest mode | |
602 | * is very similar to exiting to userspase from rcu point of view. In | |
603 | * addition CPU may stay in a guest mode for quite a long time (up to | |
604 | * one time slice). Lets treat guest mode as quiescent state, just like | |
605 | * we do with user-mode execution. | |
606 | */ | |
607 | rcu_virt_note_context_switch(smp_processor_id()); | |
d172fcd3 LV |
608 | } |
609 | ||
610 | static inline void kvm_guest_exit(void) | |
611 | { | |
e56a7a28 | 612 | account_system_vtime(current); |
d172fcd3 LV |
613 | current->flags &= ~PF_VCPU; |
614 | } | |
615 | ||
0ee8dcb8 XG |
616 | static inline int memslot_id(struct kvm *kvm, gfn_t gfn) |
617 | { | |
618 | return gfn_to_memslot(kvm, gfn)->id; | |
619 | } | |
620 | ||
887c08ac XG |
621 | static inline unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, |
622 | gfn_t gfn) | |
623 | { | |
624 | return slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE; | |
625 | } | |
626 | ||
1755fbcc AK |
627 | static inline gpa_t gfn_to_gpa(gfn_t gfn) |
628 | { | |
629 | return (gpa_t)gfn << PAGE_SHIFT; | |
630 | } | |
6aa8b732 | 631 | |
c30a358d JR |
632 | static inline gfn_t gpa_to_gfn(gpa_t gpa) |
633 | { | |
634 | return (gfn_t)(gpa >> PAGE_SHIFT); | |
635 | } | |
636 | ||
62c476c7 BAY |
637 | static inline hpa_t pfn_to_hpa(pfn_t pfn) |
638 | { | |
639 | return (hpa_t)pfn << PAGE_SHIFT; | |
640 | } | |
641 | ||
2f599714 | 642 | static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu) |
2f52d58c AK |
643 | { |
644 | set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests); | |
645 | } | |
646 | ||
ba1389b7 AK |
647 | enum kvm_stat_kind { |
648 | KVM_STAT_VM, | |
649 | KVM_STAT_VCPU, | |
650 | }; | |
651 | ||
417bc304 HB |
652 | struct kvm_stats_debugfs_item { |
653 | const char *name; | |
654 | int offset; | |
ba1389b7 | 655 | enum kvm_stat_kind kind; |
417bc304 HB |
656 | struct dentry *dentry; |
657 | }; | |
658 | extern struct kvm_stats_debugfs_item debugfs_entries[]; | |
76f7c879 | 659 | extern struct dentry *kvm_debugfs_dir; |
d4c9ff2d | 660 | |
e930bffe AA |
661 | #ifdef KVM_ARCH_WANT_MMU_NOTIFIER |
662 | static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_seq) | |
663 | { | |
664 | if (unlikely(vcpu->kvm->mmu_notifier_count)) | |
665 | return 1; | |
666 | /* | |
667 | * Both reads happen under the mmu_lock and both values are | |
668 | * modified under mmu_lock, so there's no need of smb_rmb() | |
669 | * here in between, otherwise mmu_notifier_count should be | |
670 | * read before mmu_notifier_seq, see | |
671 | * mmu_notifier_invalidate_range_end write side. | |
672 | */ | |
673 | if (vcpu->kvm->mmu_notifier_seq != mmu_seq) | |
674 | return 1; | |
675 | return 0; | |
676 | } | |
677 | #endif | |
678 | ||
399ec807 AK |
679 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
680 | ||
681 | #define KVM_MAX_IRQ_ROUTES 1024 | |
682 | ||
683 | int kvm_setup_default_irq_routing(struct kvm *kvm); | |
684 | int kvm_set_irq_routing(struct kvm *kvm, | |
685 | const struct kvm_irq_routing_entry *entries, | |
686 | unsigned nr, | |
687 | unsigned flags); | |
688 | void kvm_free_irq_routing(struct kvm *kvm); | |
689 | ||
690 | #else | |
691 | ||
692 | static inline void kvm_free_irq_routing(struct kvm *kvm) {} | |
693 | ||
694 | #endif | |
695 | ||
721eecbf GH |
696 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
697 | ||
d34e6b17 | 698 | void kvm_eventfd_init(struct kvm *kvm); |
721eecbf GH |
699 | int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags); |
700 | void kvm_irqfd_release(struct kvm *kvm); | |
bd2b53b2 | 701 | void kvm_irq_routing_update(struct kvm *, struct kvm_irq_routing_table *); |
d34e6b17 | 702 | int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args); |
721eecbf GH |
703 | |
704 | #else | |
705 | ||
d34e6b17 | 706 | static inline void kvm_eventfd_init(struct kvm *kvm) {} |
bd2b53b2 | 707 | |
721eecbf GH |
708 | static inline int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags) |
709 | { | |
710 | return -EINVAL; | |
711 | } | |
712 | ||
713 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
bd2b53b2 | 714 | |
27923eb1 | 715 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 MT |
716 | static inline void kvm_irq_routing_update(struct kvm *kvm, |
717 | struct kvm_irq_routing_table *irq_rt) | |
718 | { | |
719 | rcu_assign_pointer(kvm->irq_routing, irq_rt); | |
720 | } | |
27923eb1 | 721 | #endif |
bd2b53b2 | 722 | |
d34e6b17 GH |
723 | static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) |
724 | { | |
725 | return -ENOSYS; | |
726 | } | |
721eecbf GH |
727 | |
728 | #endif /* CONFIG_HAVE_KVM_EVENTFD */ | |
729 | ||
73880c80 | 730 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
c5af89b6 GN |
731 | static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu) |
732 | { | |
d3efc8ef | 733 | return vcpu->kvm->bsp_vcpu_id == vcpu->vcpu_id; |
c5af89b6 | 734 | } |
6aa8b732 | 735 | #endif |
bfd99ff5 AK |
736 | |
737 | #ifdef __KVM_HAVE_DEVICE_ASSIGNMENT | |
738 | ||
739 | long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, | |
740 | unsigned long arg); | |
741 | ||
742 | #else | |
743 | ||
744 | static inline long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, | |
745 | unsigned long arg) | |
746 | { | |
747 | return -ENOTTY; | |
748 | } | |
749 | ||
73880c80 | 750 | #endif |
bfd99ff5 | 751 | |
a8eeb04a AK |
752 | static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu) |
753 | { | |
754 | set_bit(req, &vcpu->requests); | |
755 | } | |
756 | ||
a8eeb04a AK |
757 | static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu) |
758 | { | |
0719837c AK |
759 | if (test_bit(req, &vcpu->requests)) { |
760 | clear_bit(req, &vcpu->requests); | |
761 | return true; | |
762 | } else { | |
763 | return false; | |
764 | } | |
a8eeb04a AK |
765 | } |
766 | ||
bfd99ff5 AK |
767 | #endif |
768 |