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> |
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 | |
743eeb0b SL |
58 | struct kvm_io_range { |
59 | gpa_t addr; | |
60 | int len; | |
61 | struct kvm_io_device *dev; | |
62 | }; | |
63 | ||
2eeb2e94 GH |
64 | struct kvm_io_bus { |
65 | int dev_count; | |
2b3c246a | 66 | #define NR_IOBUS_DEVS 300 |
743eeb0b | 67 | struct kvm_io_range range[NR_IOBUS_DEVS]; |
2eeb2e94 GH |
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); |
743eeb0b SL |
80 | int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, |
81 | int len, 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 | 258 | #ifdef KVM_COALESCED_MMIO_PAGE_OFFSET |
5f94c174 | 259 | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; |
2b3c246a SL |
260 | spinlock_t ring_lock; |
261 | struct list_head coalesced_zones; | |
5f94c174 | 262 | #endif |
e930bffe | 263 | |
60eead79 | 264 | struct mutex irq_lock; |
75858a84 | 265 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 MT |
266 | /* |
267 | * Update side is protected by irq_lock and, | |
268 | * if configured, irqfds.lock. | |
269 | */ | |
4b6a2872 | 270 | struct kvm_irq_routing_table __rcu *irq_routing; |
75858a84 | 271 | struct hlist_head mask_notifier_list; |
136bdfee | 272 | struct hlist_head irq_ack_notifier_list; |
75858a84 AK |
273 | #endif |
274 | ||
e930bffe AA |
275 | #ifdef KVM_ARCH_WANT_MMU_NOTIFIER |
276 | struct mmu_notifier mmu_notifier; | |
277 | unsigned long mmu_notifier_seq; | |
278 | long mmu_notifier_count; | |
279 | #endif | |
5c663a15 | 280 | long tlbs_dirty; |
6aa8b732 AK |
281 | }; |
282 | ||
f0242478 RR |
283 | /* The guest did something we don't support. */ |
284 | #define pr_unimpl(vcpu, fmt, ...) \ | |
285 | do { \ | |
286 | if (printk_ratelimit()) \ | |
287 | printk(KERN_ERR "kvm: %i: cpu%i " fmt, \ | |
288 | current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \ | |
d77c26fc | 289 | } while (0) |
f0242478 | 290 | |
6aa8b732 AK |
291 | #define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt) |
292 | #define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt) | |
293 | ||
988a2cae GN |
294 | static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i) |
295 | { | |
296 | smp_rmb(); | |
297 | return kvm->vcpus[i]; | |
298 | } | |
299 | ||
300 | #define kvm_for_each_vcpu(idx, vcpup, kvm) \ | |
b42fc3cb JM |
301 | for (idx = 0; \ |
302 | idx < atomic_read(&kvm->online_vcpus) && \ | |
303 | (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \ | |
304 | idx++) | |
988a2cae | 305 | |
fb3f0f51 RR |
306 | int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id); |
307 | void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); | |
308 | ||
313a3dc7 CO |
309 | void vcpu_load(struct kvm_vcpu *vcpu); |
310 | void vcpu_put(struct kvm_vcpu *vcpu); | |
311 | ||
0ee75bea | 312 | int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, |
c16f862d | 313 | struct module *module); |
cb498ea2 | 314 | void kvm_exit(void); |
6aa8b732 | 315 | |
d39f13b0 IE |
316 | void kvm_get_kvm(struct kvm *kvm); |
317 | void kvm_put_kvm(struct kvm *kvm); | |
318 | ||
90d83dc3 LJ |
319 | static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm) |
320 | { | |
321 | return rcu_dereference_check(kvm->memslots, | |
322 | srcu_read_lock_held(&kvm->srcu) | |
323 | || lockdep_is_held(&kvm->slots_lock)); | |
324 | } | |
325 | ||
6aa8b732 AK |
326 | #define HPA_MSB ((sizeof(hpa_t) * 8) - 1) |
327 | #define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB) | |
328 | static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; } | |
6aa8b732 | 329 | |
cea7bb21 | 330 | extern struct page *bad_page; |
fce92dce XG |
331 | extern struct page *fault_page; |
332 | ||
35149e21 | 333 | extern pfn_t bad_pfn; |
fce92dce | 334 | extern pfn_t fault_pfn; |
6aa8b732 | 335 | |
cea7bb21 | 336 | int is_error_page(struct page *page); |
35149e21 | 337 | int is_error_pfn(pfn_t pfn); |
bf998156 | 338 | int is_hwpoison_pfn(pfn_t pfn); |
edba23e5 | 339 | int is_fault_pfn(pfn_t pfn); |
fce92dce XG |
340 | int is_noslot_pfn(pfn_t pfn); |
341 | int is_invalid_pfn(pfn_t pfn); | |
f9d46eb0 | 342 | int kvm_is_error_hva(unsigned long addr); |
210c7c4d IE |
343 | int kvm_set_memory_region(struct kvm *kvm, |
344 | struct kvm_userspace_memory_region *mem, | |
345 | int user_alloc); | |
f78e0e2e SY |
346 | int __kvm_set_memory_region(struct kvm *kvm, |
347 | struct kvm_userspace_memory_region *mem, | |
348 | int user_alloc); | |
f7784b8e MT |
349 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
350 | struct kvm_memory_slot *memslot, | |
351 | struct kvm_memory_slot old, | |
352 | struct kvm_userspace_memory_region *mem, | |
353 | int user_alloc); | |
354 | void kvm_arch_commit_memory_region(struct kvm *kvm, | |
0de10343 ZX |
355 | struct kvm_userspace_memory_region *mem, |
356 | struct kvm_memory_slot old, | |
357 | int user_alloc); | |
54dee993 | 358 | void kvm_disable_largepages(void); |
34d4cb8f | 359 | void kvm_arch_flush_shadow(struct kvm *kvm); |
a983fb23 | 360 | |
48987781 XG |
361 | int gfn_to_page_many_atomic(struct kvm *kvm, gfn_t gfn, struct page **pages, |
362 | int nr_pages); | |
363 | ||
954bbbc2 | 364 | struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); |
05da4558 | 365 | unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn); |
b4231d61 IE |
366 | void kvm_release_page_clean(struct page *page); |
367 | void kvm_release_page_dirty(struct page *page); | |
35149e21 AL |
368 | void kvm_set_page_dirty(struct page *page); |
369 | void kvm_set_page_accessed(struct page *page); | |
370 | ||
887c08ac | 371 | pfn_t hva_to_pfn_atomic(struct kvm *kvm, unsigned long addr); |
365fb3fd | 372 | pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn); |
612819c3 MT |
373 | pfn_t gfn_to_pfn_async(struct kvm *kvm, gfn_t gfn, bool *async, |
374 | bool write_fault, bool *writable); | |
35149e21 | 375 | pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn); |
612819c3 MT |
376 | pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault, |
377 | bool *writable); | |
506f0d6f MT |
378 | pfn_t gfn_to_pfn_memslot(struct kvm *kvm, |
379 | struct kvm_memory_slot *slot, gfn_t gfn); | |
35149e21 AL |
380 | void kvm_release_pfn_dirty(pfn_t); |
381 | void kvm_release_pfn_clean(pfn_t pfn); | |
382 | void kvm_set_pfn_dirty(pfn_t pfn); | |
383 | void kvm_set_pfn_accessed(pfn_t pfn); | |
384 | void kvm_get_pfn(pfn_t pfn); | |
385 | ||
195aefde IE |
386 | int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, |
387 | int len); | |
7ec54588 MT |
388 | int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data, |
389 | unsigned long len); | |
195aefde | 390 | int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); |
e03b644f GN |
391 | int kvm_read_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
392 | void *data, unsigned long len); | |
195aefde IE |
393 | int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, |
394 | int offset, int len); | |
395 | int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, | |
396 | unsigned long len); | |
49c7754c GN |
397 | int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
398 | void *data, unsigned long len); | |
399 | int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc, | |
400 | gpa_t gpa); | |
195aefde IE |
401 | int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); |
402 | int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); | |
6aa8b732 | 403 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); |
e0d62c7f | 404 | int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); |
8f0b1ab6 | 405 | unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn); |
6aa8b732 | 406 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); |
49c7754c GN |
407 | void mark_page_dirty_in_slot(struct kvm *kvm, struct kvm_memory_slot *memslot, |
408 | gfn_t gfn); | |
6aa8b732 | 409 | |
8776e519 | 410 | void kvm_vcpu_block(struct kvm_vcpu *vcpu); |
d255f4f2 | 411 | void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu); |
6aa8b732 | 412 | void kvm_resched(struct kvm_vcpu *vcpu); |
7702fd1f AK |
413 | void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); |
414 | void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); | |
a4ee1ca4 | 415 | |
d9e368d6 | 416 | void kvm_flush_remote_tlbs(struct kvm *kvm); |
2e53d63a | 417 | void kvm_reload_remote_mmus(struct kvm *kvm); |
6aa8b732 | 418 | |
043405e1 CO |
419 | long kvm_arch_dev_ioctl(struct file *filp, |
420 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 CO |
421 | long kvm_arch_vcpu_ioctl(struct file *filp, |
422 | unsigned int ioctl, unsigned long arg); | |
018d00d2 ZX |
423 | |
424 | int kvm_dev_ioctl_check_extension(long ext); | |
425 | ||
5bb064dc ZX |
426 | int kvm_get_dirty_log(struct kvm *kvm, |
427 | struct kvm_dirty_log *log, int *is_dirty); | |
428 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, | |
429 | struct kvm_dirty_log *log); | |
430 | ||
1fe779f8 CO |
431 | int kvm_vm_ioctl_set_memory_region(struct kvm *kvm, |
432 | struct | |
433 | kvm_userspace_memory_region *mem, | |
434 | int user_alloc); | |
435 | long kvm_arch_vm_ioctl(struct file *filp, | |
436 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 | 437 | |
d0752060 HB |
438 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); |
439 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); | |
440 | ||
8b006791 ZX |
441 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, |
442 | struct kvm_translation *tr); | |
443 | ||
b6c7a5dc HB |
444 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); |
445 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); | |
446 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
447 | struct kvm_sregs *sregs); | |
448 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
449 | struct kvm_sregs *sregs); | |
62d9f0db MT |
450 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
451 | struct kvm_mp_state *mp_state); | |
452 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
453 | struct kvm_mp_state *mp_state); | |
d0bfb940 JK |
454 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
455 | struct kvm_guest_debug *dbg); | |
b6c7a5dc HB |
456 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); |
457 | ||
f8c16bba ZX |
458 | int kvm_arch_init(void *opaque); |
459 | void kvm_arch_exit(void); | |
043405e1 | 460 | |
e9b11c17 ZX |
461 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); |
462 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu); | |
463 | ||
464 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu); | |
465 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
466 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); | |
467 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); | |
26e5215f | 468 | int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu); |
d40ccc62 | 469 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu); |
e9b11c17 ZX |
470 | |
471 | int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu); | |
10474ae8 | 472 | int kvm_arch_hardware_enable(void *garbage); |
e9b11c17 ZX |
473 | void kvm_arch_hardware_disable(void *garbage); |
474 | int kvm_arch_hardware_setup(void); | |
475 | void kvm_arch_hardware_unsetup(void); | |
476 | void kvm_arch_check_processor_compat(void *rtn); | |
1d737c8a | 477 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu); |
e9b11c17 | 478 | |
d19a9cd2 ZX |
479 | void kvm_free_physmem(struct kvm *kvm); |
480 | ||
d89f5eff JK |
481 | #ifndef __KVM_HAVE_ARCH_VM_ALLOC |
482 | static inline struct kvm *kvm_arch_alloc_vm(void) | |
483 | { | |
484 | return kzalloc(sizeof(struct kvm), GFP_KERNEL); | |
485 | } | |
486 | ||
487 | static inline void kvm_arch_free_vm(struct kvm *kvm) | |
488 | { | |
489 | kfree(kvm); | |
490 | } | |
491 | #endif | |
492 | ||
493 | int kvm_arch_init_vm(struct kvm *kvm); | |
d19a9cd2 | 494 | void kvm_arch_destroy_vm(struct kvm *kvm); |
8a98f664 | 495 | void kvm_free_all_assigned_devices(struct kvm *kvm); |
ad8ba2cd | 496 | void kvm_arch_sync_events(struct kvm *kvm); |
e9b11c17 | 497 | |
3d80840d | 498 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu); |
5736199a | 499 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
682c59a3 | 500 | |
c77fb9dc XZ |
501 | int kvm_is_mmio_pfn(pfn_t pfn); |
502 | ||
62c476c7 BAY |
503 | struct kvm_irq_ack_notifier { |
504 | struct hlist_node link; | |
505 | unsigned gsi; | |
506 | void (*irq_acked)(struct kvm_irq_ack_notifier *kian); | |
507 | }; | |
508 | ||
509 | struct kvm_assigned_dev_kernel { | |
510 | struct kvm_irq_ack_notifier ack_notifier; | |
62c476c7 BAY |
511 | struct list_head list; |
512 | int assigned_dev_id; | |
ab9f4ecb | 513 | int host_segnr; |
62c476c7 BAY |
514 | int host_busnr; |
515 | int host_devfn; | |
c1e01514 | 516 | unsigned int entries_nr; |
62c476c7 | 517 | int host_irq; |
defaf158 | 518 | bool host_irq_disabled; |
c1e01514 | 519 | struct msix_entry *host_msix_entries; |
62c476c7 | 520 | int guest_irq; |
0645211c | 521 | struct msix_entry *guest_msix_entries; |
4f906c19 | 522 | unsigned long irq_requested_type; |
5550af4d | 523 | int irq_source_id; |
b653574a | 524 | int flags; |
62c476c7 BAY |
525 | struct pci_dev *dev; |
526 | struct kvm *kvm; | |
0645211c | 527 | spinlock_t intx_lock; |
1e001d49 | 528 | char irq_name[32]; |
f8fcfd77 | 529 | struct pci_saved_state *pci_saved_state; |
62c476c7 | 530 | }; |
75858a84 AK |
531 | |
532 | struct kvm_irq_mask_notifier { | |
533 | void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked); | |
534 | int irq; | |
535 | struct hlist_node link; | |
536 | }; | |
537 | ||
538 | void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq, | |
539 | struct kvm_irq_mask_notifier *kimn); | |
540 | void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq, | |
541 | struct kvm_irq_mask_notifier *kimn); | |
4a994358 GN |
542 | void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin, |
543 | bool mask); | |
75858a84 | 544 | |
46e624b9 GN |
545 | #ifdef __KVM_HAVE_IOAPIC |
546 | void kvm_get_intr_delivery_bitmask(struct kvm_ioapic *ioapic, | |
547 | union kvm_ioapic_redirect_entry *entry, | |
548 | unsigned long *deliver_bitmask); | |
549 | #endif | |
550 | int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level); | |
bd2b53b2 MT |
551 | int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm, |
552 | int irq_source_id, int level); | |
44882eed | 553 | void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin); |
3de42dc0 XZ |
554 | void kvm_register_irq_ack_notifier(struct kvm *kvm, |
555 | struct kvm_irq_ack_notifier *kian); | |
fa40a821 MT |
556 | void kvm_unregister_irq_ack_notifier(struct kvm *kvm, |
557 | struct kvm_irq_ack_notifier *kian); | |
5550af4d SY |
558 | int kvm_request_irq_source_id(struct kvm *kvm); |
559 | void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id); | |
62c476c7 | 560 | |
522c68c4 SY |
561 | /* For vcpu->arch.iommu_flags */ |
562 | #define KVM_IOMMU_CACHE_COHERENCY 0x1 | |
563 | ||
19de40a8 | 564 | #ifdef CONFIG_IOMMU_API |
3ad26d81 | 565 | int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
260782bc | 566 | int kvm_iommu_map_guest(struct kvm *kvm); |
62c476c7 | 567 | int kvm_iommu_unmap_guest(struct kvm *kvm); |
260782bc WH |
568 | int kvm_assign_device(struct kvm *kvm, |
569 | struct kvm_assigned_dev_kernel *assigned_dev); | |
0a920356 WH |
570 | int kvm_deassign_device(struct kvm *kvm, |
571 | struct kvm_assigned_dev_kernel *assigned_dev); | |
19de40a8 | 572 | #else /* CONFIG_IOMMU_API */ |
62c476c7 | 573 | static inline int kvm_iommu_map_pages(struct kvm *kvm, |
d7a79b6c | 574 | struct kvm_memory_slot *slot) |
62c476c7 BAY |
575 | { |
576 | return 0; | |
577 | } | |
578 | ||
260782bc | 579 | static inline int kvm_iommu_map_guest(struct kvm *kvm) |
62c476c7 BAY |
580 | { |
581 | return -ENODEV; | |
582 | } | |
583 | ||
584 | static inline int kvm_iommu_unmap_guest(struct kvm *kvm) | |
585 | { | |
586 | return 0; | |
587 | } | |
260782bc WH |
588 | |
589 | static inline int kvm_assign_device(struct kvm *kvm, | |
590 | struct kvm_assigned_dev_kernel *assigned_dev) | |
591 | { | |
592 | return 0; | |
593 | } | |
0a920356 WH |
594 | |
595 | static inline int kvm_deassign_device(struct kvm *kvm, | |
596 | struct kvm_assigned_dev_kernel *assigned_dev) | |
597 | { | |
598 | return 0; | |
599 | } | |
19de40a8 | 600 | #endif /* CONFIG_IOMMU_API */ |
62c476c7 | 601 | |
d172fcd3 LV |
602 | static inline void kvm_guest_enter(void) |
603 | { | |
8fa22068 | 604 | BUG_ON(preemptible()); |
e56a7a28 | 605 | account_system_vtime(current); |
d172fcd3 | 606 | current->flags |= PF_VCPU; |
8fa22068 GN |
607 | /* KVM does not hold any references to rcu protected data when it |
608 | * switches CPU into a guest mode. In fact switching to a guest mode | |
609 | * is very similar to exiting to userspase from rcu point of view. In | |
610 | * addition CPU may stay in a guest mode for quite a long time (up to | |
611 | * one time slice). Lets treat guest mode as quiescent state, just like | |
612 | * we do with user-mode execution. | |
613 | */ | |
614 | rcu_virt_note_context_switch(smp_processor_id()); | |
d172fcd3 LV |
615 | } |
616 | ||
617 | static inline void kvm_guest_exit(void) | |
618 | { | |
e56a7a28 | 619 | account_system_vtime(current); |
d172fcd3 LV |
620 | current->flags &= ~PF_VCPU; |
621 | } | |
622 | ||
0ee8dcb8 XG |
623 | static inline int memslot_id(struct kvm *kvm, gfn_t gfn) |
624 | { | |
625 | return gfn_to_memslot(kvm, gfn)->id; | |
626 | } | |
627 | ||
887c08ac XG |
628 | static inline unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, |
629 | gfn_t gfn) | |
630 | { | |
631 | return slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE; | |
632 | } | |
633 | ||
1755fbcc AK |
634 | static inline gpa_t gfn_to_gpa(gfn_t gfn) |
635 | { | |
636 | return (gpa_t)gfn << PAGE_SHIFT; | |
637 | } | |
6aa8b732 | 638 | |
c30a358d JR |
639 | static inline gfn_t gpa_to_gfn(gpa_t gpa) |
640 | { | |
641 | return (gfn_t)(gpa >> PAGE_SHIFT); | |
642 | } | |
643 | ||
62c476c7 BAY |
644 | static inline hpa_t pfn_to_hpa(pfn_t pfn) |
645 | { | |
646 | return (hpa_t)pfn << PAGE_SHIFT; | |
647 | } | |
648 | ||
2f599714 | 649 | static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu) |
2f52d58c AK |
650 | { |
651 | set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests); | |
652 | } | |
653 | ||
ba1389b7 AK |
654 | enum kvm_stat_kind { |
655 | KVM_STAT_VM, | |
656 | KVM_STAT_VCPU, | |
657 | }; | |
658 | ||
417bc304 HB |
659 | struct kvm_stats_debugfs_item { |
660 | const char *name; | |
661 | int offset; | |
ba1389b7 | 662 | enum kvm_stat_kind kind; |
417bc304 HB |
663 | struct dentry *dentry; |
664 | }; | |
665 | extern struct kvm_stats_debugfs_item debugfs_entries[]; | |
76f7c879 | 666 | extern struct dentry *kvm_debugfs_dir; |
d4c9ff2d | 667 | |
e930bffe AA |
668 | #ifdef KVM_ARCH_WANT_MMU_NOTIFIER |
669 | static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_seq) | |
670 | { | |
671 | if (unlikely(vcpu->kvm->mmu_notifier_count)) | |
672 | return 1; | |
673 | /* | |
674 | * Both reads happen under the mmu_lock and both values are | |
675 | * modified under mmu_lock, so there's no need of smb_rmb() | |
676 | * here in between, otherwise mmu_notifier_count should be | |
677 | * read before mmu_notifier_seq, see | |
678 | * mmu_notifier_invalidate_range_end write side. | |
679 | */ | |
680 | if (vcpu->kvm->mmu_notifier_seq != mmu_seq) | |
681 | return 1; | |
682 | return 0; | |
683 | } | |
684 | #endif | |
685 | ||
399ec807 AK |
686 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
687 | ||
688 | #define KVM_MAX_IRQ_ROUTES 1024 | |
689 | ||
690 | int kvm_setup_default_irq_routing(struct kvm *kvm); | |
691 | int kvm_set_irq_routing(struct kvm *kvm, | |
692 | const struct kvm_irq_routing_entry *entries, | |
693 | unsigned nr, | |
694 | unsigned flags); | |
695 | void kvm_free_irq_routing(struct kvm *kvm); | |
696 | ||
697 | #else | |
698 | ||
699 | static inline void kvm_free_irq_routing(struct kvm *kvm) {} | |
700 | ||
701 | #endif | |
702 | ||
721eecbf GH |
703 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
704 | ||
d34e6b17 | 705 | void kvm_eventfd_init(struct kvm *kvm); |
721eecbf GH |
706 | int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags); |
707 | void kvm_irqfd_release(struct kvm *kvm); | |
bd2b53b2 | 708 | void kvm_irq_routing_update(struct kvm *, struct kvm_irq_routing_table *); |
d34e6b17 | 709 | int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args); |
721eecbf GH |
710 | |
711 | #else | |
712 | ||
d34e6b17 | 713 | static inline void kvm_eventfd_init(struct kvm *kvm) {} |
bd2b53b2 | 714 | |
721eecbf GH |
715 | static inline int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags) |
716 | { | |
717 | return -EINVAL; | |
718 | } | |
719 | ||
720 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
bd2b53b2 | 721 | |
27923eb1 | 722 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 MT |
723 | static inline void kvm_irq_routing_update(struct kvm *kvm, |
724 | struct kvm_irq_routing_table *irq_rt) | |
725 | { | |
726 | rcu_assign_pointer(kvm->irq_routing, irq_rt); | |
727 | } | |
27923eb1 | 728 | #endif |
bd2b53b2 | 729 | |
d34e6b17 GH |
730 | static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) |
731 | { | |
732 | return -ENOSYS; | |
733 | } | |
721eecbf GH |
734 | |
735 | #endif /* CONFIG_HAVE_KVM_EVENTFD */ | |
736 | ||
73880c80 | 737 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
c5af89b6 GN |
738 | static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu) |
739 | { | |
d3efc8ef | 740 | return vcpu->kvm->bsp_vcpu_id == vcpu->vcpu_id; |
c5af89b6 | 741 | } |
6aa8b732 | 742 | #endif |
bfd99ff5 AK |
743 | |
744 | #ifdef __KVM_HAVE_DEVICE_ASSIGNMENT | |
745 | ||
746 | long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, | |
747 | unsigned long arg); | |
748 | ||
749 | #else | |
750 | ||
751 | static inline long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, | |
752 | unsigned long arg) | |
753 | { | |
754 | return -ENOTTY; | |
755 | } | |
756 | ||
73880c80 | 757 | #endif |
bfd99ff5 | 758 | |
a8eeb04a AK |
759 | static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu) |
760 | { | |
761 | set_bit(req, &vcpu->requests); | |
762 | } | |
763 | ||
a8eeb04a AK |
764 | static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu) |
765 | { | |
0719837c AK |
766 | if (test_bit(req, &vcpu->requests)) { |
767 | clear_bit(req, &vcpu->requests); | |
768 | return true; | |
769 | } else { | |
770 | return false; | |
771 | } | |
a8eeb04a AK |
772 | } |
773 | ||
bfd99ff5 AK |
774 | #endif |
775 |