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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 |
c9aaa895 | 50 | #define KVM_REQ_STEAL_UPDATE 13 |
6aa8b732 | 51 | |
5550af4d SY |
52 | #define KVM_USERSPACE_IRQ_SOURCE_ID 0 |
53 | ||
6c474694 | 54 | struct kvm; |
6aa8b732 | 55 | struct kvm_vcpu; |
c16f862d | 56 | extern struct kmem_cache *kvm_vcpu_cache; |
6aa8b732 | 57 | |
2eeb2e94 GH |
58 | /* |
59 | * It would be nice to use something smarter than a linear search, TBD... | |
60 | * Thankfully we dont expect many devices to register (famous last words :), | |
61 | * so until then it will suffice. At least its abstracted so we can change | |
62 | * in one place. | |
63 | */ | |
64 | struct kvm_io_bus { | |
65 | int dev_count; | |
e80e2a60 | 66 | #define NR_IOBUS_DEVS 200 |
2eeb2e94 GH |
67 | struct kvm_io_device *devs[NR_IOBUS_DEVS]; |
68 | }; | |
69 | ||
e93f8a0f MT |
70 | enum kvm_bus { |
71 | KVM_MMIO_BUS, | |
72 | KVM_PIO_BUS, | |
73 | KVM_NR_BUSES | |
74 | }; | |
75 | ||
76 | int kvm_io_bus_write(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, | |
77 | int len, const void *val); | |
78 | int kvm_io_bus_read(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, int len, | |
bda9020e | 79 | void *val); |
e93f8a0f | 80 | int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, |
090b7aff | 81 | struct kvm_io_device *dev); |
e93f8a0f MT |
82 | int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx, |
83 | struct kvm_io_device *dev); | |
2eeb2e94 | 84 | |
af585b92 GN |
85 | #ifdef CONFIG_KVM_ASYNC_PF |
86 | struct kvm_async_pf { | |
87 | struct work_struct work; | |
88 | struct list_head link; | |
89 | struct list_head queue; | |
90 | struct kvm_vcpu *vcpu; | |
91 | struct mm_struct *mm; | |
92 | gva_t gva; | |
93 | unsigned long addr; | |
94 | struct kvm_arch_async_pf arch; | |
95 | struct page *page; | |
96 | bool done; | |
97 | }; | |
98 | ||
99 | void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu); | |
100 | void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu); | |
101 | int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, gfn_t gfn, | |
102 | struct kvm_arch_async_pf *arch); | |
344d9588 | 103 | int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu); |
af585b92 GN |
104 | #endif |
105 | ||
6b7e2d09 XG |
106 | enum { |
107 | OUTSIDE_GUEST_MODE, | |
108 | IN_GUEST_MODE, | |
109 | EXITING_GUEST_MODE | |
110 | }; | |
111 | ||
d17fbbf7 ZX |
112 | struct kvm_vcpu { |
113 | struct kvm *kvm; | |
31bb117e | 114 | #ifdef CONFIG_PREEMPT_NOTIFIERS |
d17fbbf7 | 115 | struct preempt_notifier preempt_notifier; |
31bb117e | 116 | #endif |
6b7e2d09 | 117 | int cpu; |
d17fbbf7 | 118 | int vcpu_id; |
6b7e2d09 XG |
119 | int srcu_idx; |
120 | int mode; | |
d17fbbf7 | 121 | unsigned long requests; |
d0bfb940 | 122 | unsigned long guest_debug; |
6b7e2d09 XG |
123 | |
124 | struct mutex mutex; | |
125 | struct kvm_run *run; | |
f656ce01 | 126 | |
d17fbbf7 | 127 | int fpu_active; |
2acf923e | 128 | int guest_fpu_loaded, guest_xcr0_loaded; |
d17fbbf7 | 129 | wait_queue_head_t wq; |
34bb10b7 | 130 | struct pid *pid; |
d17fbbf7 ZX |
131 | int sigset_active; |
132 | sigset_t sigset; | |
133 | struct kvm_vcpu_stat stat; | |
134 | ||
34c16eec | 135 | #ifdef CONFIG_HAS_IOMEM |
d17fbbf7 ZX |
136 | int mmio_needed; |
137 | int mmio_read_completed; | |
138 | int mmio_is_write; | |
139 | int mmio_size; | |
cef4dea0 AK |
140 | int mmio_index; |
141 | unsigned char mmio_data[KVM_MMIO_SIZE]; | |
6aa8b732 | 142 | gpa_t mmio_phys_addr; |
34c16eec | 143 | #endif |
1165f5fe | 144 | |
af585b92 GN |
145 | #ifdef CONFIG_KVM_ASYNC_PF |
146 | struct { | |
147 | u32 queued; | |
148 | struct list_head queue; | |
149 | struct list_head done; | |
150 | spinlock_t lock; | |
151 | } async_pf; | |
152 | #endif | |
153 | ||
d657a98e ZX |
154 | struct kvm_vcpu_arch arch; |
155 | }; | |
156 | ||
6b7e2d09 XG |
157 | static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu) |
158 | { | |
159 | return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE); | |
160 | } | |
161 | ||
660c22c4 TY |
162 | /* |
163 | * Some of the bitops functions do not support too long bitmaps. | |
164 | * This number must be determined not to exceed such limits. | |
165 | */ | |
166 | #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1) | |
167 | ||
d4dbf470 TY |
168 | struct kvm_lpage_info { |
169 | unsigned long rmap_pde; | |
170 | int write_count; | |
171 | }; | |
172 | ||
6aa8b732 AK |
173 | struct kvm_memory_slot { |
174 | gfn_t base_gfn; | |
175 | unsigned long npages; | |
176 | unsigned long flags; | |
290fc38d | 177 | unsigned long *rmap; |
6aa8b732 | 178 | unsigned long *dirty_bitmap; |
515a0127 | 179 | unsigned long *dirty_bitmap_head; |
d4dbf470 | 180 | struct kvm_lpage_info *lpage_info[KVM_NR_PAGE_SIZES - 1]; |
8a7ae055 | 181 | unsigned long userspace_addr; |
80b14b5b | 182 | int user_alloc; |
e36d96f7 | 183 | int id; |
6aa8b732 AK |
184 | }; |
185 | ||
87bf6e7d TY |
186 | static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot) |
187 | { | |
188 | return ALIGN(memslot->npages, BITS_PER_LONG) / 8; | |
189 | } | |
190 | ||
399ec807 AK |
191 | struct kvm_kernel_irq_routing_entry { |
192 | u32 gsi; | |
5116d8f6 | 193 | u32 type; |
4925663a | 194 | int (*set)(struct kvm_kernel_irq_routing_entry *e, |
1a6e4a8c | 195 | struct kvm *kvm, int irq_source_id, int level); |
399ec807 AK |
196 | union { |
197 | struct { | |
198 | unsigned irqchip; | |
199 | unsigned pin; | |
200 | } irqchip; | |
79950e10 | 201 | struct msi_msg msi; |
399ec807 | 202 | }; |
46e624b9 GN |
203 | struct hlist_node link; |
204 | }; | |
205 | ||
3e71f88b GN |
206 | #ifdef __KVM_HAVE_IOAPIC |
207 | ||
46e624b9 | 208 | struct kvm_irq_routing_table { |
3e71f88b | 209 | int chip[KVM_NR_IRQCHIPS][KVM_IOAPIC_NUM_PINS]; |
46e624b9 GN |
210 | struct kvm_kernel_irq_routing_entry *rt_entries; |
211 | u32 nr_rt_entries; | |
212 | /* | |
213 | * Array indexed by gsi. Each entry contains list of irq chips | |
214 | * the gsi is connected to. | |
215 | */ | |
216 | struct hlist_head map[0]; | |
399ec807 AK |
217 | }; |
218 | ||
3e71f88b GN |
219 | #else |
220 | ||
221 | struct kvm_irq_routing_table {}; | |
222 | ||
223 | #endif | |
224 | ||
46a26bf5 MT |
225 | struct kvm_memslots { |
226 | int nmemslots; | |
49c7754c | 227 | u64 generation; |
46a26bf5 MT |
228 | struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS + |
229 | KVM_PRIVATE_MEM_SLOTS]; | |
230 | }; | |
231 | ||
6aa8b732 | 232 | struct kvm { |
aaee2c94 | 233 | spinlock_t mmu_lock; |
79fac95e | 234 | struct mutex slots_lock; |
6d4e4c4f | 235 | struct mm_struct *mm; /* userspace tied to this vm */ |
46a26bf5 | 236 | struct kvm_memslots *memslots; |
bc6678a3 | 237 | struct srcu_struct srcu; |
73880c80 GN |
238 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
239 | u32 bsp_vcpu_id; | |
c5af89b6 | 240 | struct kvm_vcpu *bsp_vcpu; |
73880c80 | 241 | #endif |
fb3f0f51 | 242 | struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; |
73880c80 | 243 | atomic_t online_vcpus; |
217ece61 | 244 | int last_boosted_vcpu; |
133de902 | 245 | struct list_head vm_list; |
60eead79 | 246 | struct mutex lock; |
e93f8a0f | 247 | struct kvm_io_bus *buses[KVM_NR_BUSES]; |
721eecbf GH |
248 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
249 | struct { | |
250 | spinlock_t lock; | |
251 | struct list_head items; | |
252 | } irqfds; | |
d34e6b17 | 253 | struct list_head ioeventfds; |
721eecbf | 254 | #endif |
ba1389b7 | 255 | struct kvm_vm_stat stat; |
d69fb81f | 256 | struct kvm_arch arch; |
d39f13b0 | 257 | atomic_t users_count; |
5f94c174 LV |
258 | #ifdef KVM_COALESCED_MMIO_PAGE_OFFSET |
259 | struct kvm_coalesced_mmio_dev *coalesced_mmio_dev; | |
260 | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; | |
261 | #endif | |
e930bffe | 262 | |
60eead79 | 263 | struct mutex irq_lock; |
75858a84 | 264 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 MT |
265 | /* |
266 | * Update side is protected by irq_lock and, | |
267 | * if configured, irqfds.lock. | |
268 | */ | |
4b6a2872 | 269 | struct kvm_irq_routing_table __rcu *irq_routing; |
75858a84 | 270 | struct hlist_head mask_notifier_list; |
136bdfee | 271 | struct hlist_head irq_ack_notifier_list; |
75858a84 AK |
272 | #endif |
273 | ||
e930bffe AA |
274 | #ifdef KVM_ARCH_WANT_MMU_NOTIFIER |
275 | struct mmu_notifier mmu_notifier; | |
276 | unsigned long mmu_notifier_seq; | |
277 | long mmu_notifier_count; | |
278 | #endif | |
5c663a15 | 279 | long tlbs_dirty; |
6aa8b732 AK |
280 | }; |
281 | ||
f0242478 RR |
282 | /* The guest did something we don't support. */ |
283 | #define pr_unimpl(vcpu, fmt, ...) \ | |
284 | do { \ | |
285 | if (printk_ratelimit()) \ | |
286 | printk(KERN_ERR "kvm: %i: cpu%i " fmt, \ | |
287 | current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \ | |
d77c26fc | 288 | } while (0) |
f0242478 | 289 | |
6aa8b732 AK |
290 | #define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt) |
291 | #define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt) | |
292 | ||
988a2cae GN |
293 | static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i) |
294 | { | |
295 | smp_rmb(); | |
296 | return kvm->vcpus[i]; | |
297 | } | |
298 | ||
299 | #define kvm_for_each_vcpu(idx, vcpup, kvm) \ | |
b42fc3cb JM |
300 | for (idx = 0; \ |
301 | idx < atomic_read(&kvm->online_vcpus) && \ | |
302 | (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \ | |
303 | idx++) | |
988a2cae | 304 | |
fb3f0f51 RR |
305 | int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id); |
306 | void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); | |
307 | ||
313a3dc7 CO |
308 | void vcpu_load(struct kvm_vcpu *vcpu); |
309 | void vcpu_put(struct kvm_vcpu *vcpu); | |
310 | ||
0ee75bea | 311 | int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, |
c16f862d | 312 | struct module *module); |
cb498ea2 | 313 | void kvm_exit(void); |
6aa8b732 | 314 | |
d39f13b0 IE |
315 | void kvm_get_kvm(struct kvm *kvm); |
316 | void kvm_put_kvm(struct kvm *kvm); | |
317 | ||
90d83dc3 LJ |
318 | static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm) |
319 | { | |
320 | return rcu_dereference_check(kvm->memslots, | |
321 | srcu_read_lock_held(&kvm->srcu) | |
322 | || lockdep_is_held(&kvm->slots_lock)); | |
323 | } | |
324 | ||
6aa8b732 AK |
325 | #define HPA_MSB ((sizeof(hpa_t) * 8) - 1) |
326 | #define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB) | |
327 | static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; } | |
6aa8b732 | 328 | |
cea7bb21 | 329 | extern struct page *bad_page; |
35149e21 | 330 | extern pfn_t bad_pfn; |
6aa8b732 | 331 | |
cea7bb21 | 332 | int is_error_page(struct page *page); |
35149e21 | 333 | int is_error_pfn(pfn_t pfn); |
bf998156 | 334 | int is_hwpoison_pfn(pfn_t pfn); |
edba23e5 | 335 | int is_fault_pfn(pfn_t pfn); |
f9d46eb0 | 336 | int kvm_is_error_hva(unsigned long addr); |
210c7c4d IE |
337 | int kvm_set_memory_region(struct kvm *kvm, |
338 | struct kvm_userspace_memory_region *mem, | |
339 | int user_alloc); | |
f78e0e2e SY |
340 | int __kvm_set_memory_region(struct kvm *kvm, |
341 | struct kvm_userspace_memory_region *mem, | |
342 | int user_alloc); | |
f7784b8e MT |
343 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
344 | struct kvm_memory_slot *memslot, | |
345 | struct kvm_memory_slot old, | |
346 | struct kvm_userspace_memory_region *mem, | |
347 | int user_alloc); | |
348 | void kvm_arch_commit_memory_region(struct kvm *kvm, | |
0de10343 ZX |
349 | struct kvm_userspace_memory_region *mem, |
350 | struct kvm_memory_slot old, | |
351 | int user_alloc); | |
54dee993 | 352 | void kvm_disable_largepages(void); |
34d4cb8f | 353 | void kvm_arch_flush_shadow(struct kvm *kvm); |
a983fb23 | 354 | |
48987781 XG |
355 | int gfn_to_page_many_atomic(struct kvm *kvm, gfn_t gfn, struct page **pages, |
356 | int nr_pages); | |
357 | ||
954bbbc2 | 358 | struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); |
05da4558 | 359 | unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn); |
b4231d61 IE |
360 | void kvm_release_page_clean(struct page *page); |
361 | void kvm_release_page_dirty(struct page *page); | |
35149e21 AL |
362 | void kvm_set_page_dirty(struct page *page); |
363 | void kvm_set_page_accessed(struct page *page); | |
364 | ||
887c08ac | 365 | pfn_t hva_to_pfn_atomic(struct kvm *kvm, unsigned long addr); |
365fb3fd | 366 | pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn); |
612819c3 MT |
367 | pfn_t gfn_to_pfn_async(struct kvm *kvm, gfn_t gfn, bool *async, |
368 | bool write_fault, bool *writable); | |
35149e21 | 369 | pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn); |
612819c3 MT |
370 | pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault, |
371 | bool *writable); | |
506f0d6f MT |
372 | pfn_t gfn_to_pfn_memslot(struct kvm *kvm, |
373 | struct kvm_memory_slot *slot, gfn_t gfn); | |
35149e21 AL |
374 | void kvm_release_pfn_dirty(pfn_t); |
375 | void kvm_release_pfn_clean(pfn_t pfn); | |
376 | void kvm_set_pfn_dirty(pfn_t pfn); | |
377 | void kvm_set_pfn_accessed(pfn_t pfn); | |
378 | void kvm_get_pfn(pfn_t pfn); | |
379 | ||
195aefde IE |
380 | int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, |
381 | int len); | |
7ec54588 MT |
382 | int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data, |
383 | unsigned long len); | |
195aefde | 384 | int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); |
e03b644f GN |
385 | int kvm_read_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
386 | void *data, unsigned long len); | |
195aefde IE |
387 | int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, |
388 | int offset, int len); | |
389 | int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, | |
390 | unsigned long len); | |
49c7754c GN |
391 | int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
392 | void *data, unsigned long len); | |
393 | int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc, | |
394 | gpa_t gpa); | |
195aefde IE |
395 | int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); |
396 | int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); | |
6aa8b732 | 397 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); |
e0d62c7f | 398 | int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); |
8f0b1ab6 | 399 | unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn); |
6aa8b732 | 400 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); |
49c7754c GN |
401 | void mark_page_dirty_in_slot(struct kvm *kvm, struct kvm_memory_slot *memslot, |
402 | gfn_t gfn); | |
6aa8b732 | 403 | |
8776e519 | 404 | void kvm_vcpu_block(struct kvm_vcpu *vcpu); |
d255f4f2 | 405 | void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu); |
6aa8b732 | 406 | void kvm_resched(struct kvm_vcpu *vcpu); |
7702fd1f AK |
407 | void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); |
408 | void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); | |
a4ee1ca4 | 409 | |
d9e368d6 | 410 | void kvm_flush_remote_tlbs(struct kvm *kvm); |
2e53d63a | 411 | void kvm_reload_remote_mmus(struct kvm *kvm); |
6aa8b732 | 412 | |
043405e1 CO |
413 | long kvm_arch_dev_ioctl(struct file *filp, |
414 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 CO |
415 | long kvm_arch_vcpu_ioctl(struct file *filp, |
416 | unsigned int ioctl, unsigned long arg); | |
018d00d2 ZX |
417 | |
418 | int kvm_dev_ioctl_check_extension(long ext); | |
419 | ||
5bb064dc ZX |
420 | int kvm_get_dirty_log(struct kvm *kvm, |
421 | struct kvm_dirty_log *log, int *is_dirty); | |
422 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, | |
423 | struct kvm_dirty_log *log); | |
424 | ||
1fe779f8 CO |
425 | int kvm_vm_ioctl_set_memory_region(struct kvm *kvm, |
426 | struct | |
427 | kvm_userspace_memory_region *mem, | |
428 | int user_alloc); | |
429 | long kvm_arch_vm_ioctl(struct file *filp, | |
430 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 | 431 | |
d0752060 HB |
432 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); |
433 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); | |
434 | ||
8b006791 ZX |
435 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, |
436 | struct kvm_translation *tr); | |
437 | ||
b6c7a5dc HB |
438 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); |
439 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); | |
440 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
441 | struct kvm_sregs *sregs); | |
442 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
443 | struct kvm_sregs *sregs); | |
62d9f0db MT |
444 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
445 | struct kvm_mp_state *mp_state); | |
446 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
447 | struct kvm_mp_state *mp_state); | |
d0bfb940 JK |
448 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
449 | struct kvm_guest_debug *dbg); | |
b6c7a5dc HB |
450 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); |
451 | ||
f8c16bba ZX |
452 | int kvm_arch_init(void *opaque); |
453 | void kvm_arch_exit(void); | |
043405e1 | 454 | |
e9b11c17 ZX |
455 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); |
456 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu); | |
457 | ||
458 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu); | |
459 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
460 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); | |
461 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); | |
26e5215f | 462 | int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu); |
d40ccc62 | 463 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu); |
e9b11c17 ZX |
464 | |
465 | int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu); | |
10474ae8 | 466 | int kvm_arch_hardware_enable(void *garbage); |
e9b11c17 ZX |
467 | void kvm_arch_hardware_disable(void *garbage); |
468 | int kvm_arch_hardware_setup(void); | |
469 | void kvm_arch_hardware_unsetup(void); | |
470 | void kvm_arch_check_processor_compat(void *rtn); | |
1d737c8a | 471 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu); |
e9b11c17 | 472 | |
d19a9cd2 ZX |
473 | void kvm_free_physmem(struct kvm *kvm); |
474 | ||
d89f5eff JK |
475 | #ifndef __KVM_HAVE_ARCH_VM_ALLOC |
476 | static inline struct kvm *kvm_arch_alloc_vm(void) | |
477 | { | |
478 | return kzalloc(sizeof(struct kvm), GFP_KERNEL); | |
479 | } | |
480 | ||
481 | static inline void kvm_arch_free_vm(struct kvm *kvm) | |
482 | { | |
483 | kfree(kvm); | |
484 | } | |
485 | #endif | |
486 | ||
487 | int kvm_arch_init_vm(struct kvm *kvm); | |
d19a9cd2 | 488 | void kvm_arch_destroy_vm(struct kvm *kvm); |
8a98f664 | 489 | void kvm_free_all_assigned_devices(struct kvm *kvm); |
ad8ba2cd | 490 | void kvm_arch_sync_events(struct kvm *kvm); |
e9b11c17 | 491 | |
3d80840d | 492 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu); |
5736199a | 493 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
682c59a3 | 494 | |
c77fb9dc XZ |
495 | int kvm_is_mmio_pfn(pfn_t pfn); |
496 | ||
62c476c7 BAY |
497 | struct kvm_irq_ack_notifier { |
498 | struct hlist_node link; | |
499 | unsigned gsi; | |
500 | void (*irq_acked)(struct kvm_irq_ack_notifier *kian); | |
501 | }; | |
502 | ||
503 | struct kvm_assigned_dev_kernel { | |
504 | struct kvm_irq_ack_notifier ack_notifier; | |
62c476c7 BAY |
505 | struct list_head list; |
506 | int assigned_dev_id; | |
ab9f4ecb | 507 | int host_segnr; |
62c476c7 BAY |
508 | int host_busnr; |
509 | int host_devfn; | |
c1e01514 | 510 | unsigned int entries_nr; |
62c476c7 | 511 | int host_irq; |
defaf158 | 512 | bool host_irq_disabled; |
c1e01514 | 513 | struct msix_entry *host_msix_entries; |
62c476c7 | 514 | int guest_irq; |
0645211c | 515 | struct msix_entry *guest_msix_entries; |
4f906c19 | 516 | unsigned long irq_requested_type; |
5550af4d | 517 | int irq_source_id; |
b653574a | 518 | int flags; |
62c476c7 BAY |
519 | struct pci_dev *dev; |
520 | struct kvm *kvm; | |
0645211c | 521 | spinlock_t intx_lock; |
1e001d49 | 522 | char irq_name[32]; |
f8fcfd77 | 523 | struct pci_saved_state *pci_saved_state; |
62c476c7 | 524 | }; |
75858a84 AK |
525 | |
526 | struct kvm_irq_mask_notifier { | |
527 | void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked); | |
528 | int irq; | |
529 | struct hlist_node link; | |
530 | }; | |
531 | ||
532 | void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq, | |
533 | struct kvm_irq_mask_notifier *kimn); | |
534 | void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq, | |
535 | struct kvm_irq_mask_notifier *kimn); | |
4a994358 GN |
536 | void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin, |
537 | bool mask); | |
75858a84 | 538 | |
46e624b9 GN |
539 | #ifdef __KVM_HAVE_IOAPIC |
540 | void kvm_get_intr_delivery_bitmask(struct kvm_ioapic *ioapic, | |
541 | union kvm_ioapic_redirect_entry *entry, | |
542 | unsigned long *deliver_bitmask); | |
543 | #endif | |
544 | int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level); | |
bd2b53b2 MT |
545 | int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm, |
546 | int irq_source_id, int level); | |
44882eed | 547 | void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin); |
3de42dc0 XZ |
548 | void kvm_register_irq_ack_notifier(struct kvm *kvm, |
549 | struct kvm_irq_ack_notifier *kian); | |
fa40a821 MT |
550 | void kvm_unregister_irq_ack_notifier(struct kvm *kvm, |
551 | struct kvm_irq_ack_notifier *kian); | |
5550af4d SY |
552 | int kvm_request_irq_source_id(struct kvm *kvm); |
553 | void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id); | |
62c476c7 | 554 | |
522c68c4 SY |
555 | /* For vcpu->arch.iommu_flags */ |
556 | #define KVM_IOMMU_CACHE_COHERENCY 0x1 | |
557 | ||
19de40a8 | 558 | #ifdef CONFIG_IOMMU_API |
3ad26d81 | 559 | int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
260782bc | 560 | int kvm_iommu_map_guest(struct kvm *kvm); |
62c476c7 | 561 | int kvm_iommu_unmap_guest(struct kvm *kvm); |
260782bc WH |
562 | int kvm_assign_device(struct kvm *kvm, |
563 | struct kvm_assigned_dev_kernel *assigned_dev); | |
0a920356 WH |
564 | int kvm_deassign_device(struct kvm *kvm, |
565 | struct kvm_assigned_dev_kernel *assigned_dev); | |
19de40a8 | 566 | #else /* CONFIG_IOMMU_API */ |
62c476c7 | 567 | static inline int kvm_iommu_map_pages(struct kvm *kvm, |
d7a79b6c | 568 | struct kvm_memory_slot *slot) |
62c476c7 BAY |
569 | { |
570 | return 0; | |
571 | } | |
572 | ||
260782bc | 573 | static inline int kvm_iommu_map_guest(struct kvm *kvm) |
62c476c7 BAY |
574 | { |
575 | return -ENODEV; | |
576 | } | |
577 | ||
578 | static inline int kvm_iommu_unmap_guest(struct kvm *kvm) | |
579 | { | |
580 | return 0; | |
581 | } | |
260782bc WH |
582 | |
583 | static inline int kvm_assign_device(struct kvm *kvm, | |
584 | struct kvm_assigned_dev_kernel *assigned_dev) | |
585 | { | |
586 | return 0; | |
587 | } | |
0a920356 WH |
588 | |
589 | static inline int kvm_deassign_device(struct kvm *kvm, | |
590 | struct kvm_assigned_dev_kernel *assigned_dev) | |
591 | { | |
592 | return 0; | |
593 | } | |
19de40a8 | 594 | #endif /* CONFIG_IOMMU_API */ |
62c476c7 | 595 | |
d172fcd3 LV |
596 | static inline void kvm_guest_enter(void) |
597 | { | |
8fa22068 | 598 | BUG_ON(preemptible()); |
e56a7a28 | 599 | account_system_vtime(current); |
d172fcd3 | 600 | current->flags |= PF_VCPU; |
8fa22068 GN |
601 | /* KVM does not hold any references to rcu protected data when it |
602 | * switches CPU into a guest mode. In fact switching to a guest mode | |
603 | * is very similar to exiting to userspase from rcu point of view. In | |
604 | * addition CPU may stay in a guest mode for quite a long time (up to | |
605 | * one time slice). Lets treat guest mode as quiescent state, just like | |
606 | * we do with user-mode execution. | |
607 | */ | |
608 | rcu_virt_note_context_switch(smp_processor_id()); | |
d172fcd3 LV |
609 | } |
610 | ||
611 | static inline void kvm_guest_exit(void) | |
612 | { | |
e56a7a28 | 613 | account_system_vtime(current); |
d172fcd3 LV |
614 | current->flags &= ~PF_VCPU; |
615 | } | |
616 | ||
0ee8dcb8 XG |
617 | static inline int memslot_id(struct kvm *kvm, gfn_t gfn) |
618 | { | |
619 | return gfn_to_memslot(kvm, gfn)->id; | |
620 | } | |
621 | ||
887c08ac XG |
622 | static inline unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, |
623 | gfn_t gfn) | |
624 | { | |
625 | return slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE; | |
626 | } | |
627 | ||
1755fbcc AK |
628 | static inline gpa_t gfn_to_gpa(gfn_t gfn) |
629 | { | |
630 | return (gpa_t)gfn << PAGE_SHIFT; | |
631 | } | |
6aa8b732 | 632 | |
c30a358d JR |
633 | static inline gfn_t gpa_to_gfn(gpa_t gpa) |
634 | { | |
635 | return (gfn_t)(gpa >> PAGE_SHIFT); | |
636 | } | |
637 | ||
62c476c7 BAY |
638 | static inline hpa_t pfn_to_hpa(pfn_t pfn) |
639 | { | |
640 | return (hpa_t)pfn << PAGE_SHIFT; | |
641 | } | |
642 | ||
2f599714 | 643 | static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu) |
2f52d58c AK |
644 | { |
645 | set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests); | |
646 | } | |
647 | ||
ba1389b7 AK |
648 | enum kvm_stat_kind { |
649 | KVM_STAT_VM, | |
650 | KVM_STAT_VCPU, | |
651 | }; | |
652 | ||
417bc304 HB |
653 | struct kvm_stats_debugfs_item { |
654 | const char *name; | |
655 | int offset; | |
ba1389b7 | 656 | enum kvm_stat_kind kind; |
417bc304 HB |
657 | struct dentry *dentry; |
658 | }; | |
659 | extern struct kvm_stats_debugfs_item debugfs_entries[]; | |
76f7c879 | 660 | extern struct dentry *kvm_debugfs_dir; |
d4c9ff2d | 661 | |
e930bffe AA |
662 | #ifdef KVM_ARCH_WANT_MMU_NOTIFIER |
663 | static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_seq) | |
664 | { | |
665 | if (unlikely(vcpu->kvm->mmu_notifier_count)) | |
666 | return 1; | |
667 | /* | |
668 | * Both reads happen under the mmu_lock and both values are | |
669 | * modified under mmu_lock, so there's no need of smb_rmb() | |
670 | * here in between, otherwise mmu_notifier_count should be | |
671 | * read before mmu_notifier_seq, see | |
672 | * mmu_notifier_invalidate_range_end write side. | |
673 | */ | |
674 | if (vcpu->kvm->mmu_notifier_seq != mmu_seq) | |
675 | return 1; | |
676 | return 0; | |
677 | } | |
678 | #endif | |
679 | ||
399ec807 AK |
680 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
681 | ||
682 | #define KVM_MAX_IRQ_ROUTES 1024 | |
683 | ||
684 | int kvm_setup_default_irq_routing(struct kvm *kvm); | |
685 | int kvm_set_irq_routing(struct kvm *kvm, | |
686 | const struct kvm_irq_routing_entry *entries, | |
687 | unsigned nr, | |
688 | unsigned flags); | |
689 | void kvm_free_irq_routing(struct kvm *kvm); | |
690 | ||
691 | #else | |
692 | ||
693 | static inline void kvm_free_irq_routing(struct kvm *kvm) {} | |
694 | ||
695 | #endif | |
696 | ||
721eecbf GH |
697 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
698 | ||
d34e6b17 | 699 | void kvm_eventfd_init(struct kvm *kvm); |
721eecbf GH |
700 | int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags); |
701 | void kvm_irqfd_release(struct kvm *kvm); | |
bd2b53b2 | 702 | void kvm_irq_routing_update(struct kvm *, struct kvm_irq_routing_table *); |
d34e6b17 | 703 | int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args); |
721eecbf GH |
704 | |
705 | #else | |
706 | ||
d34e6b17 | 707 | static inline void kvm_eventfd_init(struct kvm *kvm) {} |
bd2b53b2 | 708 | |
721eecbf GH |
709 | static inline int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags) |
710 | { | |
711 | return -EINVAL; | |
712 | } | |
713 | ||
714 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
bd2b53b2 | 715 | |
27923eb1 | 716 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 MT |
717 | static inline void kvm_irq_routing_update(struct kvm *kvm, |
718 | struct kvm_irq_routing_table *irq_rt) | |
719 | { | |
720 | rcu_assign_pointer(kvm->irq_routing, irq_rt); | |
721 | } | |
27923eb1 | 722 | #endif |
bd2b53b2 | 723 | |
d34e6b17 GH |
724 | static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) |
725 | { | |
726 | return -ENOSYS; | |
727 | } | |
721eecbf GH |
728 | |
729 | #endif /* CONFIG_HAVE_KVM_EVENTFD */ | |
730 | ||
73880c80 | 731 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
c5af89b6 GN |
732 | static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu) |
733 | { | |
d3efc8ef | 734 | return vcpu->kvm->bsp_vcpu_id == vcpu->vcpu_id; |
c5af89b6 | 735 | } |
6aa8b732 | 736 | #endif |
bfd99ff5 AK |
737 | |
738 | #ifdef __KVM_HAVE_DEVICE_ASSIGNMENT | |
739 | ||
740 | long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, | |
741 | unsigned long arg); | |
742 | ||
743 | #else | |
744 | ||
745 | static inline long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, | |
746 | unsigned long arg) | |
747 | { | |
748 | return -ENOTTY; | |
749 | } | |
750 | ||
73880c80 | 751 | #endif |
bfd99ff5 | 752 | |
a8eeb04a AK |
753 | static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu) |
754 | { | |
755 | set_bit(req, &vcpu->requests); | |
756 | } | |
757 | ||
a8eeb04a AK |
758 | static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu) |
759 | { | |
0719837c AK |
760 | if (test_bit(req, &vcpu->requests)) { |
761 | clear_bit(req, &vcpu->requests); | |
762 | return true; | |
763 | } else { | |
764 | return false; | |
765 | } | |
a8eeb04a AK |
766 | } |
767 | ||
bfd99ff5 AK |
768 | #endif |
769 |