Commit | Line | Data |
---|---|---|
edf88417 AK |
1 | #ifndef __KVM_HOST_H |
2 | #define __KVM_HOST_H | |
6aa8b732 AK |
3 | |
4 | /* | |
5 | * This work is licensed under the terms of the GNU GPL, version 2. See | |
6 | * the COPYING file in the top-level directory. | |
7 | */ | |
8 | ||
9 | #include <linux/types.h> | |
e56a7a28 | 10 | #include <linux/hardirq.h> |
6aa8b732 AK |
11 | #include <linux/list.h> |
12 | #include <linux/mutex.h> | |
13 | #include <linux/spinlock.h> | |
06ff0d37 MR |
14 | #include <linux/signal.h> |
15 | #include <linux/sched.h> | |
187f1882 | 16 | #include <linux/bug.h> |
6aa8b732 | 17 | #include <linux/mm.h> |
b297e672 | 18 | #include <linux/mmu_notifier.h> |
15ad7146 | 19 | #include <linux/preempt.h> |
0937c48d | 20 | #include <linux/msi.h> |
d89f5eff | 21 | #include <linux/slab.h> |
bd2b53b2 | 22 | #include <linux/rcupdate.h> |
bd80158a | 23 | #include <linux/ratelimit.h> |
83f09228 | 24 | #include <linux/err.h> |
e8edc6e0 | 25 | #include <asm/signal.h> |
6aa8b732 | 26 | |
6aa8b732 | 27 | #include <linux/kvm.h> |
102d8325 | 28 | #include <linux/kvm_para.h> |
6aa8b732 | 29 | |
edf88417 | 30 | #include <linux/kvm_types.h> |
d77a39d9 | 31 | |
edf88417 | 32 | #include <asm/kvm_host.h> |
d657a98e | 33 | |
cef4dea0 AK |
34 | #ifndef KVM_MMIO_SIZE |
35 | #define KVM_MMIO_SIZE 8 | |
36 | #endif | |
37 | ||
67b29204 XG |
38 | /* |
39 | * The bit 16 ~ bit 31 of kvm_memory_region::flags are internally used | |
40 | * in kvm, other bits are visible for userspace which are defined in | |
41 | * include/linux/kvm_h. | |
42 | */ | |
43 | #define KVM_MEMSLOT_INVALID (1UL << 16) | |
44 | ||
87da7e66 XG |
45 | /* Two fragments for cross MMIO pages. */ |
46 | #define KVM_MAX_MMIO_FRAGMENTS 2 | |
f78146b0 | 47 | |
9c5b1172 XG |
48 | /* |
49 | * For the normal pfn, the highest 12 bits should be zero, | |
81c52c56 XG |
50 | * so we can mask bit 62 ~ bit 52 to indicate the error pfn, |
51 | * mask bit 63 to indicate the noslot pfn. | |
9c5b1172 | 52 | */ |
81c52c56 XG |
53 | #define KVM_PFN_ERR_MASK (0x7ffULL << 52) |
54 | #define KVM_PFN_ERR_NOSLOT_MASK (0xfffULL << 52) | |
55 | #define KVM_PFN_NOSLOT (0x1ULL << 63) | |
9c5b1172 XG |
56 | |
57 | #define KVM_PFN_ERR_FAULT (KVM_PFN_ERR_MASK) | |
58 | #define KVM_PFN_ERR_HWPOISON (KVM_PFN_ERR_MASK + 1) | |
81c52c56 | 59 | #define KVM_PFN_ERR_RO_FAULT (KVM_PFN_ERR_MASK + 2) |
6c8ee57b | 60 | |
81c52c56 XG |
61 | /* |
62 | * error pfns indicate that the gfn is in slot but faild to | |
63 | * translate it to pfn on host. | |
64 | */ | |
9c5b1172 | 65 | static inline bool is_error_pfn(pfn_t pfn) |
83f09228 | 66 | { |
9c5b1172 | 67 | return !!(pfn & KVM_PFN_ERR_MASK); |
83f09228 XG |
68 | } |
69 | ||
81c52c56 XG |
70 | /* |
71 | * error_noslot pfns indicate that the gfn can not be | |
72 | * translated to pfn - it is not in slot or failed to | |
73 | * translate it to pfn. | |
74 | */ | |
75 | static inline bool is_error_noslot_pfn(pfn_t pfn) | |
83f09228 | 76 | { |
81c52c56 | 77 | return !!(pfn & KVM_PFN_ERR_NOSLOT_MASK); |
83f09228 XG |
78 | } |
79 | ||
81c52c56 XG |
80 | /* noslot pfn indicates that the gfn is not in slot. */ |
81 | static inline bool is_noslot_pfn(pfn_t pfn) | |
83f09228 | 82 | { |
81c52c56 | 83 | return pfn == KVM_PFN_NOSLOT; |
83f09228 XG |
84 | } |
85 | ||
7068d097 XG |
86 | #define KVM_HVA_ERR_BAD (PAGE_OFFSET) |
87 | #define KVM_HVA_ERR_RO_BAD (PAGE_OFFSET + PAGE_SIZE) | |
ca3a490c XG |
88 | |
89 | static inline bool kvm_is_error_hva(unsigned long addr) | |
90 | { | |
7068d097 | 91 | return addr >= PAGE_OFFSET; |
ca3a490c XG |
92 | } |
93 | ||
6cede2e6 XG |
94 | #define KVM_ERR_PTR_BAD_PAGE (ERR_PTR(-ENOENT)) |
95 | ||
9c5b1172 | 96 | static inline bool is_error_page(struct page *page) |
6cede2e6 XG |
97 | { |
98 | return IS_ERR(page); | |
99 | } | |
100 | ||
d9e368d6 AK |
101 | /* |
102 | * vcpu->requests bit members | |
103 | */ | |
3176bc3e | 104 | #define KVM_REQ_TLB_FLUSH 0 |
2f52d58c | 105 | #define KVM_REQ_MIGRATE_TIMER 1 |
b209749f | 106 | #define KVM_REQ_REPORT_TPR_ACCESS 2 |
2e53d63a | 107 | #define KVM_REQ_MMU_RELOAD 3 |
71c4dfaf | 108 | #define KVM_REQ_TRIPLE_FAULT 4 |
06e05645 | 109 | #define KVM_REQ_PENDING_TIMER 5 |
d7690175 | 110 | #define KVM_REQ_UNHALT 6 |
4731d4c7 | 111 | #define KVM_REQ_MMU_SYNC 7 |
34c238a1 | 112 | #define KVM_REQ_CLOCK_UPDATE 8 |
32f88400 | 113 | #define KVM_REQ_KICK 9 |
02daab21 | 114 | #define KVM_REQ_DEACTIVATE_FPU 10 |
3842d135 | 115 | #define KVM_REQ_EVENT 11 |
af585b92 | 116 | #define KVM_REQ_APF_HALT 12 |
c9aaa895 | 117 | #define KVM_REQ_STEAL_UPDATE 13 |
7460fb4a | 118 | #define KVM_REQ_NMI 14 |
d6185f20 | 119 | #define KVM_REQ_IMMEDIATE_EXIT 15 |
f5132b01 GN |
120 | #define KVM_REQ_PMU 16 |
121 | #define KVM_REQ_PMI 17 | |
f61c94bb | 122 | #define KVM_REQ_WATCHDOG 18 |
d828199e MT |
123 | #define KVM_REQ_MASTERCLOCK_UPDATE 19 |
124 | #define KVM_REQ_MCLOCK_INPROGRESS 20 | |
1c810636 | 125 | #define KVM_REQ_EPR_EXIT 21 |
6aa8b732 | 126 | |
7a84428a AW |
127 | #define KVM_USERSPACE_IRQ_SOURCE_ID 0 |
128 | #define KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID 1 | |
5550af4d | 129 | |
6c474694 | 130 | struct kvm; |
6aa8b732 | 131 | struct kvm_vcpu; |
c16f862d | 132 | extern struct kmem_cache *kvm_vcpu_cache; |
6aa8b732 | 133 | |
743eeb0b SL |
134 | struct kvm_io_range { |
135 | gpa_t addr; | |
136 | int len; | |
137 | struct kvm_io_device *dev; | |
138 | }; | |
139 | ||
786a9f88 | 140 | #define NR_IOBUS_DEVS 1000 |
a1300716 | 141 | |
2eeb2e94 GH |
142 | struct kvm_io_bus { |
143 | int dev_count; | |
a1300716 | 144 | struct kvm_io_range range[]; |
2eeb2e94 GH |
145 | }; |
146 | ||
e93f8a0f MT |
147 | enum kvm_bus { |
148 | KVM_MMIO_BUS, | |
149 | KVM_PIO_BUS, | |
150 | KVM_NR_BUSES | |
151 | }; | |
152 | ||
153 | int kvm_io_bus_write(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, | |
154 | int len, const void *val); | |
155 | int kvm_io_bus_read(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, int len, | |
bda9020e | 156 | void *val); |
743eeb0b SL |
157 | int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, |
158 | int len, struct kvm_io_device *dev); | |
e93f8a0f MT |
159 | int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx, |
160 | struct kvm_io_device *dev); | |
2eeb2e94 | 161 | |
af585b92 GN |
162 | #ifdef CONFIG_KVM_ASYNC_PF |
163 | struct kvm_async_pf { | |
164 | struct work_struct work; | |
165 | struct list_head link; | |
166 | struct list_head queue; | |
167 | struct kvm_vcpu *vcpu; | |
168 | struct mm_struct *mm; | |
169 | gva_t gva; | |
170 | unsigned long addr; | |
171 | struct kvm_arch_async_pf arch; | |
172 | struct page *page; | |
173 | bool done; | |
174 | }; | |
175 | ||
176 | void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu); | |
177 | void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu); | |
178 | int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, gfn_t gfn, | |
179 | struct kvm_arch_async_pf *arch); | |
344d9588 | 180 | int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu); |
af585b92 GN |
181 | #endif |
182 | ||
6b7e2d09 XG |
183 | enum { |
184 | OUTSIDE_GUEST_MODE, | |
185 | IN_GUEST_MODE, | |
c142786c AK |
186 | EXITING_GUEST_MODE, |
187 | READING_SHADOW_PAGE_TABLES, | |
6b7e2d09 XG |
188 | }; |
189 | ||
f78146b0 AK |
190 | /* |
191 | * Sometimes a large or cross-page mmio needs to be broken up into separate | |
192 | * exits for userspace servicing. | |
193 | */ | |
194 | struct kvm_mmio_fragment { | |
195 | gpa_t gpa; | |
196 | void *data; | |
197 | unsigned len; | |
198 | }; | |
199 | ||
d17fbbf7 ZX |
200 | struct kvm_vcpu { |
201 | struct kvm *kvm; | |
31bb117e | 202 | #ifdef CONFIG_PREEMPT_NOTIFIERS |
d17fbbf7 | 203 | struct preempt_notifier preempt_notifier; |
31bb117e | 204 | #endif |
6b7e2d09 | 205 | int cpu; |
d17fbbf7 | 206 | int vcpu_id; |
6b7e2d09 XG |
207 | int srcu_idx; |
208 | int mode; | |
d17fbbf7 | 209 | unsigned long requests; |
d0bfb940 | 210 | unsigned long guest_debug; |
6b7e2d09 XG |
211 | |
212 | struct mutex mutex; | |
213 | struct kvm_run *run; | |
f656ce01 | 214 | |
d17fbbf7 | 215 | int fpu_active; |
2acf923e | 216 | int guest_fpu_loaded, guest_xcr0_loaded; |
d17fbbf7 | 217 | wait_queue_head_t wq; |
34bb10b7 | 218 | struct pid *pid; |
d17fbbf7 ZX |
219 | int sigset_active; |
220 | sigset_t sigset; | |
221 | struct kvm_vcpu_stat stat; | |
222 | ||
34c16eec | 223 | #ifdef CONFIG_HAS_IOMEM |
d17fbbf7 ZX |
224 | int mmio_needed; |
225 | int mmio_read_completed; | |
226 | int mmio_is_write; | |
f78146b0 AK |
227 | int mmio_cur_fragment; |
228 | int mmio_nr_fragments; | |
229 | struct kvm_mmio_fragment mmio_fragments[KVM_MAX_MMIO_FRAGMENTS]; | |
34c16eec | 230 | #endif |
1165f5fe | 231 | |
af585b92 GN |
232 | #ifdef CONFIG_KVM_ASYNC_PF |
233 | struct { | |
234 | u32 queued; | |
235 | struct list_head queue; | |
236 | struct list_head done; | |
237 | spinlock_t lock; | |
238 | } async_pf; | |
239 | #endif | |
240 | ||
4c088493 R |
241 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
242 | /* | |
243 | * Cpu relax intercept or pause loop exit optimization | |
244 | * in_spin_loop: set when a vcpu does a pause loop exit | |
245 | * or cpu relax intercepted. | |
246 | * dy_eligible: indicates whether vcpu is eligible for directed yield. | |
247 | */ | |
248 | struct { | |
249 | bool in_spin_loop; | |
250 | bool dy_eligible; | |
251 | } spin_loop; | |
252 | #endif | |
d657a98e ZX |
253 | struct kvm_vcpu_arch arch; |
254 | }; | |
255 | ||
6b7e2d09 XG |
256 | static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu) |
257 | { | |
258 | return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE); | |
259 | } | |
260 | ||
660c22c4 TY |
261 | /* |
262 | * Some of the bitops functions do not support too long bitmaps. | |
263 | * This number must be determined not to exceed such limits. | |
264 | */ | |
265 | #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1) | |
266 | ||
6aa8b732 AK |
267 | struct kvm_memory_slot { |
268 | gfn_t base_gfn; | |
269 | unsigned long npages; | |
6aa8b732 | 270 | unsigned long *dirty_bitmap; |
db3fe4eb | 271 | struct kvm_arch_memory_slot arch; |
8a7ae055 | 272 | unsigned long userspace_addr; |
6104f472 | 273 | u32 flags; |
1e702d9a | 274 | short id; |
f82a8cfe | 275 | bool user_alloc; |
6aa8b732 AK |
276 | }; |
277 | ||
87bf6e7d TY |
278 | static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot) |
279 | { | |
280 | return ALIGN(memslot->npages, BITS_PER_LONG) / 8; | |
281 | } | |
282 | ||
399ec807 AK |
283 | struct kvm_kernel_irq_routing_entry { |
284 | u32 gsi; | |
5116d8f6 | 285 | u32 type; |
4925663a | 286 | int (*set)(struct kvm_kernel_irq_routing_entry *e, |
1a6e4a8c | 287 | struct kvm *kvm, int irq_source_id, int level); |
399ec807 AK |
288 | union { |
289 | struct { | |
290 | unsigned irqchip; | |
291 | unsigned pin; | |
292 | } irqchip; | |
79950e10 | 293 | struct msi_msg msi; |
399ec807 | 294 | }; |
46e624b9 GN |
295 | struct hlist_node link; |
296 | }; | |
297 | ||
3e71f88b GN |
298 | #ifdef __KVM_HAVE_IOAPIC |
299 | ||
46e624b9 | 300 | struct kvm_irq_routing_table { |
3e71f88b | 301 | int chip[KVM_NR_IRQCHIPS][KVM_IOAPIC_NUM_PINS]; |
46e624b9 GN |
302 | struct kvm_kernel_irq_routing_entry *rt_entries; |
303 | u32 nr_rt_entries; | |
304 | /* | |
305 | * Array indexed by gsi. Each entry contains list of irq chips | |
306 | * the gsi is connected to. | |
307 | */ | |
308 | struct hlist_head map[0]; | |
399ec807 AK |
309 | }; |
310 | ||
3e71f88b GN |
311 | #else |
312 | ||
313 | struct kvm_irq_routing_table {}; | |
314 | ||
315 | #endif | |
316 | ||
0743247f AW |
317 | #ifndef KVM_PRIVATE_MEM_SLOTS |
318 | #define KVM_PRIVATE_MEM_SLOTS 0 | |
319 | #endif | |
320 | ||
93a5cef0 | 321 | #ifndef KVM_MEM_SLOTS_NUM |
bbacc0c1 | 322 | #define KVM_MEM_SLOTS_NUM (KVM_USER_MEM_SLOTS + KVM_PRIVATE_MEM_SLOTS) |
93a5cef0 XG |
323 | #endif |
324 | ||
bf3e05bc XG |
325 | /* |
326 | * Note: | |
327 | * memslots are not sorted by id anymore, please use id_to_memslot() | |
328 | * to get the memslot by its id. | |
329 | */ | |
46a26bf5 | 330 | struct kvm_memslots { |
49c7754c | 331 | u64 generation; |
93a5cef0 | 332 | struct kvm_memory_slot memslots[KVM_MEM_SLOTS_NUM]; |
f85e2cb5 | 333 | /* The mapping table from slot id to the index in memslots[]. */ |
1e702d9a | 334 | short id_to_index[KVM_MEM_SLOTS_NUM]; |
46a26bf5 MT |
335 | }; |
336 | ||
6aa8b732 | 337 | struct kvm { |
aaee2c94 | 338 | spinlock_t mmu_lock; |
79fac95e | 339 | struct mutex slots_lock; |
6d4e4c4f | 340 | struct mm_struct *mm; /* userspace tied to this vm */ |
46a26bf5 | 341 | struct kvm_memslots *memslots; |
bc6678a3 | 342 | struct srcu_struct srcu; |
73880c80 GN |
343 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
344 | u32 bsp_vcpu_id; | |
73880c80 | 345 | #endif |
fb3f0f51 | 346 | struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; |
73880c80 | 347 | atomic_t online_vcpus; |
217ece61 | 348 | int last_boosted_vcpu; |
133de902 | 349 | struct list_head vm_list; |
60eead79 | 350 | struct mutex lock; |
e93f8a0f | 351 | struct kvm_io_bus *buses[KVM_NR_BUSES]; |
721eecbf GH |
352 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
353 | struct { | |
354 | spinlock_t lock; | |
355 | struct list_head items; | |
7a84428a AW |
356 | struct list_head resampler_list; |
357 | struct mutex resampler_lock; | |
721eecbf | 358 | } irqfds; |
d34e6b17 | 359 | struct list_head ioeventfds; |
721eecbf | 360 | #endif |
ba1389b7 | 361 | struct kvm_vm_stat stat; |
d69fb81f | 362 | struct kvm_arch arch; |
d39f13b0 | 363 | atomic_t users_count; |
5f94c174 | 364 | #ifdef KVM_COALESCED_MMIO_PAGE_OFFSET |
5f94c174 | 365 | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; |
2b3c246a SL |
366 | spinlock_t ring_lock; |
367 | struct list_head coalesced_zones; | |
5f94c174 | 368 | #endif |
e930bffe | 369 | |
60eead79 | 370 | struct mutex irq_lock; |
75858a84 | 371 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 MT |
372 | /* |
373 | * Update side is protected by irq_lock and, | |
374 | * if configured, irqfds.lock. | |
375 | */ | |
4b6a2872 | 376 | struct kvm_irq_routing_table __rcu *irq_routing; |
75858a84 | 377 | struct hlist_head mask_notifier_list; |
136bdfee | 378 | struct hlist_head irq_ack_notifier_list; |
75858a84 AK |
379 | #endif |
380 | ||
36c1ed82 | 381 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
e930bffe AA |
382 | struct mmu_notifier mmu_notifier; |
383 | unsigned long mmu_notifier_seq; | |
384 | long mmu_notifier_count; | |
385 | #endif | |
5c663a15 | 386 | long tlbs_dirty; |
6aa8b732 AK |
387 | }; |
388 | ||
a737f256 CD |
389 | #define kvm_err(fmt, ...) \ |
390 | pr_err("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
391 | #define kvm_info(fmt, ...) \ | |
392 | pr_info("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
393 | #define kvm_debug(fmt, ...) \ | |
394 | pr_debug("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
395 | #define kvm_pr_unimpl(fmt, ...) \ | |
396 | pr_err_ratelimited("kvm [%i]: " fmt, \ | |
397 | task_tgid_nr(current), ## __VA_ARGS__) | |
f0242478 | 398 | |
a737f256 CD |
399 | /* The guest did something we don't support. */ |
400 | #define vcpu_unimpl(vcpu, fmt, ...) \ | |
401 | kvm_pr_unimpl("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__) | |
6aa8b732 | 402 | |
988a2cae GN |
403 | static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i) |
404 | { | |
405 | smp_rmb(); | |
406 | return kvm->vcpus[i]; | |
407 | } | |
408 | ||
409 | #define kvm_for_each_vcpu(idx, vcpup, kvm) \ | |
b42fc3cb JM |
410 | for (idx = 0; \ |
411 | idx < atomic_read(&kvm->online_vcpus) && \ | |
412 | (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \ | |
413 | idx++) | |
988a2cae | 414 | |
be6ba0f0 XG |
415 | #define kvm_for_each_memslot(memslot, slots) \ |
416 | for (memslot = &slots->memslots[0]; \ | |
bf3e05bc XG |
417 | memslot < slots->memslots + KVM_MEM_SLOTS_NUM && memslot->npages;\ |
418 | memslot++) | |
be6ba0f0 | 419 | |
fb3f0f51 RR |
420 | int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id); |
421 | void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); | |
422 | ||
9fc77441 | 423 | int __must_check vcpu_load(struct kvm_vcpu *vcpu); |
313a3dc7 CO |
424 | void vcpu_put(struct kvm_vcpu *vcpu); |
425 | ||
0ee75bea | 426 | int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, |
c16f862d | 427 | struct module *module); |
cb498ea2 | 428 | void kvm_exit(void); |
6aa8b732 | 429 | |
d39f13b0 IE |
430 | void kvm_get_kvm(struct kvm *kvm); |
431 | void kvm_put_kvm(struct kvm *kvm); | |
116c14c0 AW |
432 | void update_memslots(struct kvm_memslots *slots, struct kvm_memory_slot *new, |
433 | u64 last_generation); | |
d39f13b0 | 434 | |
90d83dc3 LJ |
435 | static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm) |
436 | { | |
437 | return rcu_dereference_check(kvm->memslots, | |
438 | srcu_read_lock_held(&kvm->srcu) | |
439 | || lockdep_is_held(&kvm->slots_lock)); | |
440 | } | |
441 | ||
28a37544 XG |
442 | static inline struct kvm_memory_slot * |
443 | id_to_memslot(struct kvm_memslots *slots, int id) | |
444 | { | |
f85e2cb5 XG |
445 | int index = slots->id_to_index[id]; |
446 | struct kvm_memory_slot *slot; | |
bf3e05bc | 447 | |
f85e2cb5 | 448 | slot = &slots->memslots[index]; |
bf3e05bc | 449 | |
f85e2cb5 XG |
450 | WARN_ON(slot->id != id); |
451 | return slot; | |
28a37544 XG |
452 | } |
453 | ||
210c7c4d IE |
454 | int kvm_set_memory_region(struct kvm *kvm, |
455 | struct kvm_userspace_memory_region *mem, | |
f82a8cfe | 456 | bool user_alloc); |
f78e0e2e SY |
457 | int __kvm_set_memory_region(struct kvm *kvm, |
458 | struct kvm_userspace_memory_region *mem, | |
f82a8cfe | 459 | bool user_alloc); |
db3fe4eb TY |
460 | void kvm_arch_free_memslot(struct kvm_memory_slot *free, |
461 | struct kvm_memory_slot *dont); | |
462 | int kvm_arch_create_memslot(struct kvm_memory_slot *slot, unsigned long npages); | |
f7784b8e MT |
463 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
464 | struct kvm_memory_slot *memslot, | |
465 | struct kvm_memory_slot old, | |
466 | struct kvm_userspace_memory_region *mem, | |
f82a8cfe | 467 | bool user_alloc); |
f7784b8e | 468 | void kvm_arch_commit_memory_region(struct kvm *kvm, |
0de10343 ZX |
469 | struct kvm_userspace_memory_region *mem, |
470 | struct kvm_memory_slot old, | |
f82a8cfe | 471 | bool user_alloc); |
db3fe4eb | 472 | bool kvm_largepages_enabled(void); |
54dee993 | 473 | void kvm_disable_largepages(void); |
2df72e9b MT |
474 | /* flush all memory translations */ |
475 | void kvm_arch_flush_shadow_all(struct kvm *kvm); | |
476 | /* flush memory translations pointing to 'slot' */ | |
477 | void kvm_arch_flush_shadow_memslot(struct kvm *kvm, | |
478 | struct kvm_memory_slot *slot); | |
a983fb23 | 479 | |
48987781 XG |
480 | int gfn_to_page_many_atomic(struct kvm *kvm, gfn_t gfn, struct page **pages, |
481 | int nr_pages); | |
482 | ||
954bbbc2 | 483 | struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); |
05da4558 | 484 | unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn); |
4d8b81ab | 485 | unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
b4231d61 IE |
486 | void kvm_release_page_clean(struct page *page); |
487 | void kvm_release_page_dirty(struct page *page); | |
35149e21 AL |
488 | void kvm_set_page_dirty(struct page *page); |
489 | void kvm_set_page_accessed(struct page *page); | |
490 | ||
365fb3fd | 491 | pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn); |
612819c3 MT |
492 | pfn_t gfn_to_pfn_async(struct kvm *kvm, gfn_t gfn, bool *async, |
493 | bool write_fault, bool *writable); | |
35149e21 | 494 | pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn); |
612819c3 MT |
495 | pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault, |
496 | bool *writable); | |
d5661048 | 497 | pfn_t gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
037d92dc XG |
498 | pfn_t gfn_to_pfn_memslot_atomic(struct kvm_memory_slot *slot, gfn_t gfn); |
499 | ||
32cad84f | 500 | void kvm_release_pfn_dirty(pfn_t pfn); |
35149e21 AL |
501 | void kvm_release_pfn_clean(pfn_t pfn); |
502 | void kvm_set_pfn_dirty(pfn_t pfn); | |
503 | void kvm_set_pfn_accessed(pfn_t pfn); | |
504 | void kvm_get_pfn(pfn_t pfn); | |
505 | ||
195aefde IE |
506 | int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, |
507 | int len); | |
7ec54588 MT |
508 | int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data, |
509 | unsigned long len); | |
195aefde | 510 | int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); |
e03b644f GN |
511 | int kvm_read_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
512 | void *data, unsigned long len); | |
195aefde IE |
513 | int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, |
514 | int offset, int len); | |
515 | int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, | |
516 | unsigned long len); | |
49c7754c GN |
517 | int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
518 | void *data, unsigned long len); | |
519 | int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc, | |
520 | gpa_t gpa); | |
195aefde IE |
521 | int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); |
522 | int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); | |
6aa8b732 | 523 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); |
e0d62c7f | 524 | int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); |
8f0b1ab6 | 525 | unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn); |
6aa8b732 | 526 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); |
49c7754c GN |
527 | void mark_page_dirty_in_slot(struct kvm *kvm, struct kvm_memory_slot *memslot, |
528 | gfn_t gfn); | |
6aa8b732 | 529 | |
8776e519 | 530 | void kvm_vcpu_block(struct kvm_vcpu *vcpu); |
b6d33834 | 531 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
41628d33 | 532 | bool kvm_vcpu_yield_to(struct kvm_vcpu *target); |
d255f4f2 | 533 | void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu); |
6aa8b732 | 534 | void kvm_resched(struct kvm_vcpu *vcpu); |
7702fd1f AK |
535 | void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); |
536 | void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); | |
a4ee1ca4 | 537 | |
d9e368d6 | 538 | void kvm_flush_remote_tlbs(struct kvm *kvm); |
2e53d63a | 539 | void kvm_reload_remote_mmus(struct kvm *kvm); |
d828199e | 540 | void kvm_make_mclock_inprogress_request(struct kvm *kvm); |
6aa8b732 | 541 | |
043405e1 CO |
542 | long kvm_arch_dev_ioctl(struct file *filp, |
543 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 CO |
544 | long kvm_arch_vcpu_ioctl(struct file *filp, |
545 | unsigned int ioctl, unsigned long arg); | |
5b1c1493 | 546 | int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf); |
018d00d2 ZX |
547 | |
548 | int kvm_dev_ioctl_check_extension(long ext); | |
549 | ||
5bb064dc ZX |
550 | int kvm_get_dirty_log(struct kvm *kvm, |
551 | struct kvm_dirty_log *log, int *is_dirty); | |
552 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, | |
553 | struct kvm_dirty_log *log); | |
554 | ||
1fe779f8 CO |
555 | int kvm_vm_ioctl_set_memory_region(struct kvm *kvm, |
556 | struct | |
557 | kvm_userspace_memory_region *mem, | |
f82a8cfe | 558 | bool user_alloc); |
23d43cf9 | 559 | int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_level); |
1fe779f8 CO |
560 | long kvm_arch_vm_ioctl(struct file *filp, |
561 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 | 562 | |
d0752060 HB |
563 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); |
564 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); | |
565 | ||
8b006791 ZX |
566 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, |
567 | struct kvm_translation *tr); | |
568 | ||
b6c7a5dc HB |
569 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); |
570 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); | |
571 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
572 | struct kvm_sregs *sregs); | |
573 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
574 | struct kvm_sregs *sregs); | |
62d9f0db MT |
575 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
576 | struct kvm_mp_state *mp_state); | |
577 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
578 | struct kvm_mp_state *mp_state); | |
d0bfb940 JK |
579 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
580 | struct kvm_guest_debug *dbg); | |
b6c7a5dc HB |
581 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); |
582 | ||
f8c16bba ZX |
583 | int kvm_arch_init(void *opaque); |
584 | void kvm_arch_exit(void); | |
043405e1 | 585 | |
e9b11c17 ZX |
586 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); |
587 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu); | |
588 | ||
589 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu); | |
590 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
591 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); | |
592 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); | |
26e5215f | 593 | int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu); |
42897d86 | 594 | int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu); |
d40ccc62 | 595 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu); |
e9b11c17 | 596 | |
10474ae8 | 597 | int kvm_arch_hardware_enable(void *garbage); |
e9b11c17 ZX |
598 | void kvm_arch_hardware_disable(void *garbage); |
599 | int kvm_arch_hardware_setup(void); | |
600 | void kvm_arch_hardware_unsetup(void); | |
601 | void kvm_arch_check_processor_compat(void *rtn); | |
1d737c8a | 602 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu); |
b6d33834 | 603 | int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu); |
e9b11c17 | 604 | |
d19a9cd2 ZX |
605 | void kvm_free_physmem(struct kvm *kvm); |
606 | ||
c1a7b32a TY |
607 | void *kvm_kvzalloc(unsigned long size); |
608 | void kvm_kvfree(const void *addr); | |
609 | ||
d89f5eff JK |
610 | #ifndef __KVM_HAVE_ARCH_VM_ALLOC |
611 | static inline struct kvm *kvm_arch_alloc_vm(void) | |
612 | { | |
613 | return kzalloc(sizeof(struct kvm), GFP_KERNEL); | |
614 | } | |
615 | ||
616 | static inline void kvm_arch_free_vm(struct kvm *kvm) | |
617 | { | |
618 | kfree(kvm); | |
619 | } | |
620 | #endif | |
621 | ||
b6d33834 CD |
622 | static inline wait_queue_head_t *kvm_arch_vcpu_wq(struct kvm_vcpu *vcpu) |
623 | { | |
2246f8b5 AG |
624 | #ifdef __KVM_HAVE_ARCH_WQP |
625 | return vcpu->arch.wqp; | |
626 | #else | |
b6d33834 | 627 | return &vcpu->wq; |
b6d33834 | 628 | #endif |
2246f8b5 | 629 | } |
b6d33834 | 630 | |
e08b9637 | 631 | int kvm_arch_init_vm(struct kvm *kvm, unsigned long type); |
d19a9cd2 | 632 | void kvm_arch_destroy_vm(struct kvm *kvm); |
8a98f664 | 633 | void kvm_free_all_assigned_devices(struct kvm *kvm); |
ad8ba2cd | 634 | void kvm_arch_sync_events(struct kvm *kvm); |
e9b11c17 | 635 | |
3d80840d | 636 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu); |
5736199a | 637 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
682c59a3 | 638 | |
a2766325 | 639 | bool kvm_is_mmio_pfn(pfn_t pfn); |
c77fb9dc | 640 | |
62c476c7 BAY |
641 | struct kvm_irq_ack_notifier { |
642 | struct hlist_node link; | |
643 | unsigned gsi; | |
644 | void (*irq_acked)(struct kvm_irq_ack_notifier *kian); | |
645 | }; | |
646 | ||
647 | struct kvm_assigned_dev_kernel { | |
648 | struct kvm_irq_ack_notifier ack_notifier; | |
62c476c7 BAY |
649 | struct list_head list; |
650 | int assigned_dev_id; | |
ab9f4ecb | 651 | int host_segnr; |
62c476c7 BAY |
652 | int host_busnr; |
653 | int host_devfn; | |
c1e01514 | 654 | unsigned int entries_nr; |
62c476c7 | 655 | int host_irq; |
defaf158 | 656 | bool host_irq_disabled; |
07700a94 | 657 | bool pci_2_3; |
c1e01514 | 658 | struct msix_entry *host_msix_entries; |
62c476c7 | 659 | int guest_irq; |
0645211c | 660 | struct msix_entry *guest_msix_entries; |
4f906c19 | 661 | unsigned long irq_requested_type; |
5550af4d | 662 | int irq_source_id; |
b653574a | 663 | int flags; |
62c476c7 BAY |
664 | struct pci_dev *dev; |
665 | struct kvm *kvm; | |
0645211c | 666 | spinlock_t intx_lock; |
cf9eeac4 | 667 | spinlock_t intx_mask_lock; |
1e001d49 | 668 | char irq_name[32]; |
f8fcfd77 | 669 | struct pci_saved_state *pci_saved_state; |
62c476c7 | 670 | }; |
75858a84 AK |
671 | |
672 | struct kvm_irq_mask_notifier { | |
673 | void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked); | |
674 | int irq; | |
675 | struct hlist_node link; | |
676 | }; | |
677 | ||
678 | void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq, | |
679 | struct kvm_irq_mask_notifier *kimn); | |
680 | void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq, | |
681 | struct kvm_irq_mask_notifier *kimn); | |
4a994358 GN |
682 | void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin, |
683 | bool mask); | |
75858a84 | 684 | |
46e624b9 GN |
685 | #ifdef __KVM_HAVE_IOAPIC |
686 | void kvm_get_intr_delivery_bitmask(struct kvm_ioapic *ioapic, | |
687 | union kvm_ioapic_redirect_entry *entry, | |
688 | unsigned long *deliver_bitmask); | |
689 | #endif | |
690 | int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level); | |
01f21880 | 691 | int kvm_set_irq_inatomic(struct kvm *kvm, int irq_source_id, u32 irq, int level); |
bd2b53b2 MT |
692 | int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm, |
693 | int irq_source_id, int level); | |
44882eed | 694 | void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin); |
3de42dc0 XZ |
695 | void kvm_register_irq_ack_notifier(struct kvm *kvm, |
696 | struct kvm_irq_ack_notifier *kian); | |
fa40a821 MT |
697 | void kvm_unregister_irq_ack_notifier(struct kvm *kvm, |
698 | struct kvm_irq_ack_notifier *kian); | |
5550af4d SY |
699 | int kvm_request_irq_source_id(struct kvm *kvm); |
700 | void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id); | |
62c476c7 | 701 | |
522c68c4 SY |
702 | /* For vcpu->arch.iommu_flags */ |
703 | #define KVM_IOMMU_CACHE_COHERENCY 0x1 | |
704 | ||
19de40a8 | 705 | #ifdef CONFIG_IOMMU_API |
3ad26d81 | 706 | int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
32f6daad | 707 | void kvm_iommu_unmap_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
260782bc | 708 | int kvm_iommu_map_guest(struct kvm *kvm); |
62c476c7 | 709 | int kvm_iommu_unmap_guest(struct kvm *kvm); |
260782bc WH |
710 | int kvm_assign_device(struct kvm *kvm, |
711 | struct kvm_assigned_dev_kernel *assigned_dev); | |
0a920356 WH |
712 | int kvm_deassign_device(struct kvm *kvm, |
713 | struct kvm_assigned_dev_kernel *assigned_dev); | |
19de40a8 | 714 | #else /* CONFIG_IOMMU_API */ |
62c476c7 | 715 | static inline int kvm_iommu_map_pages(struct kvm *kvm, |
d7a79b6c | 716 | struct kvm_memory_slot *slot) |
62c476c7 BAY |
717 | { |
718 | return 0; | |
719 | } | |
720 | ||
32f6daad AW |
721 | static inline void kvm_iommu_unmap_pages(struct kvm *kvm, |
722 | struct kvm_memory_slot *slot) | |
723 | { | |
724 | } | |
725 | ||
260782bc | 726 | static inline int kvm_iommu_map_guest(struct kvm *kvm) |
62c476c7 BAY |
727 | { |
728 | return -ENODEV; | |
729 | } | |
730 | ||
731 | static inline int kvm_iommu_unmap_guest(struct kvm *kvm) | |
732 | { | |
733 | return 0; | |
734 | } | |
260782bc WH |
735 | |
736 | static inline int kvm_assign_device(struct kvm *kvm, | |
737 | struct kvm_assigned_dev_kernel *assigned_dev) | |
738 | { | |
739 | return 0; | |
740 | } | |
0a920356 WH |
741 | |
742 | static inline int kvm_deassign_device(struct kvm *kvm, | |
743 | struct kvm_assigned_dev_kernel *assigned_dev) | |
744 | { | |
745 | return 0; | |
746 | } | |
19de40a8 | 747 | #endif /* CONFIG_IOMMU_API */ |
62c476c7 | 748 | |
d172fcd3 LV |
749 | static inline void kvm_guest_enter(void) |
750 | { | |
8fa22068 | 751 | BUG_ON(preemptible()); |
b080935c FW |
752 | /* |
753 | * This is running in ioctl context so we can avoid | |
754 | * the call to vtime_account() with its unnecessary idle check. | |
755 | */ | |
fd25b4c2 | 756 | vtime_account_system_irqsafe(current); |
d172fcd3 | 757 | current->flags |= PF_VCPU; |
8fa22068 GN |
758 | /* KVM does not hold any references to rcu protected data when it |
759 | * switches CPU into a guest mode. In fact switching to a guest mode | |
760 | * is very similar to exiting to userspase from rcu point of view. In | |
761 | * addition CPU may stay in a guest mode for quite a long time (up to | |
762 | * one time slice). Lets treat guest mode as quiescent state, just like | |
763 | * we do with user-mode execution. | |
764 | */ | |
765 | rcu_virt_note_context_switch(smp_processor_id()); | |
d172fcd3 LV |
766 | } |
767 | ||
768 | static inline void kvm_guest_exit(void) | |
769 | { | |
b080935c FW |
770 | /* |
771 | * This is running in ioctl context so we can avoid | |
772 | * the call to vtime_account() with its unnecessary idle check. | |
773 | */ | |
fd25b4c2 | 774 | vtime_account_system_irqsafe(current); |
d172fcd3 LV |
775 | current->flags &= ~PF_VCPU; |
776 | } | |
777 | ||
9d4cba7f PM |
778 | /* |
779 | * search_memslots() and __gfn_to_memslot() are here because they are | |
780 | * used in non-modular code in arch/powerpc/kvm/book3s_hv_rm_mmu.c. | |
781 | * gfn_to_memslot() itself isn't here as an inline because that would | |
782 | * bloat other code too much. | |
783 | */ | |
784 | static inline struct kvm_memory_slot * | |
785 | search_memslots(struct kvm_memslots *slots, gfn_t gfn) | |
786 | { | |
787 | struct kvm_memory_slot *memslot; | |
788 | ||
789 | kvm_for_each_memslot(memslot, slots) | |
790 | if (gfn >= memslot->base_gfn && | |
791 | gfn < memslot->base_gfn + memslot->npages) | |
792 | return memslot; | |
793 | ||
794 | return NULL; | |
795 | } | |
796 | ||
797 | static inline struct kvm_memory_slot * | |
798 | __gfn_to_memslot(struct kvm_memslots *slots, gfn_t gfn) | |
799 | { | |
800 | return search_memslots(slots, gfn); | |
801 | } | |
802 | ||
66a03505 GS |
803 | static inline unsigned long |
804 | __gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn) | |
805 | { | |
806 | return slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE; | |
807 | } | |
808 | ||
0ee8dcb8 XG |
809 | static inline int memslot_id(struct kvm *kvm, gfn_t gfn) |
810 | { | |
811 | return gfn_to_memslot(kvm, gfn)->id; | |
812 | } | |
813 | ||
fb03cb6f TY |
814 | static inline gfn_t gfn_to_index(gfn_t gfn, gfn_t base_gfn, int level) |
815 | { | |
816 | /* KVM_HPAGE_GFN_SHIFT(PT_PAGE_TABLE_LEVEL) must be 0. */ | |
817 | return (gfn >> KVM_HPAGE_GFN_SHIFT(level)) - | |
818 | (base_gfn >> KVM_HPAGE_GFN_SHIFT(level)); | |
819 | } | |
820 | ||
d19a748b TY |
821 | static inline gfn_t |
822 | hva_to_gfn_memslot(unsigned long hva, struct kvm_memory_slot *slot) | |
887c08ac | 823 | { |
d19a748b TY |
824 | gfn_t gfn_offset = (hva - slot->userspace_addr) >> PAGE_SHIFT; |
825 | ||
826 | return slot->base_gfn + gfn_offset; | |
887c08ac XG |
827 | } |
828 | ||
1755fbcc AK |
829 | static inline gpa_t gfn_to_gpa(gfn_t gfn) |
830 | { | |
831 | return (gpa_t)gfn << PAGE_SHIFT; | |
832 | } | |
6aa8b732 | 833 | |
c30a358d JR |
834 | static inline gfn_t gpa_to_gfn(gpa_t gpa) |
835 | { | |
836 | return (gfn_t)(gpa >> PAGE_SHIFT); | |
837 | } | |
838 | ||
62c476c7 BAY |
839 | static inline hpa_t pfn_to_hpa(pfn_t pfn) |
840 | { | |
841 | return (hpa_t)pfn << PAGE_SHIFT; | |
842 | } | |
843 | ||
2f599714 | 844 | static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu) |
2f52d58c AK |
845 | { |
846 | set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests); | |
847 | } | |
848 | ||
ba1389b7 AK |
849 | enum kvm_stat_kind { |
850 | KVM_STAT_VM, | |
851 | KVM_STAT_VCPU, | |
852 | }; | |
853 | ||
417bc304 HB |
854 | struct kvm_stats_debugfs_item { |
855 | const char *name; | |
856 | int offset; | |
ba1389b7 | 857 | enum kvm_stat_kind kind; |
417bc304 HB |
858 | struct dentry *dentry; |
859 | }; | |
860 | extern struct kvm_stats_debugfs_item debugfs_entries[]; | |
76f7c879 | 861 | extern struct dentry *kvm_debugfs_dir; |
d4c9ff2d | 862 | |
36c1ed82 | 863 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
8ca40a70 | 864 | static inline int mmu_notifier_retry(struct kvm *kvm, unsigned long mmu_seq) |
e930bffe | 865 | { |
8ca40a70 | 866 | if (unlikely(kvm->mmu_notifier_count)) |
e930bffe AA |
867 | return 1; |
868 | /* | |
a355aa54 PM |
869 | * Ensure the read of mmu_notifier_count happens before the read |
870 | * of mmu_notifier_seq. This interacts with the smp_wmb() in | |
871 | * mmu_notifier_invalidate_range_end to make sure that the caller | |
872 | * either sees the old (non-zero) value of mmu_notifier_count or | |
873 | * the new (incremented) value of mmu_notifier_seq. | |
874 | * PowerPC Book3s HV KVM calls this under a per-page lock | |
875 | * rather than under kvm->mmu_lock, for scalability, so | |
876 | * can't rely on kvm->mmu_lock to keep things ordered. | |
e930bffe | 877 | */ |
a355aa54 | 878 | smp_rmb(); |
8ca40a70 | 879 | if (kvm->mmu_notifier_seq != mmu_seq) |
e930bffe AA |
880 | return 1; |
881 | return 0; | |
882 | } | |
883 | #endif | |
884 | ||
9900b4b4 | 885 | #ifdef KVM_CAP_IRQ_ROUTING |
399ec807 AK |
886 | |
887 | #define KVM_MAX_IRQ_ROUTES 1024 | |
888 | ||
889 | int kvm_setup_default_irq_routing(struct kvm *kvm); | |
890 | int kvm_set_irq_routing(struct kvm *kvm, | |
891 | const struct kvm_irq_routing_entry *entries, | |
892 | unsigned nr, | |
893 | unsigned flags); | |
894 | void kvm_free_irq_routing(struct kvm *kvm); | |
895 | ||
07975ad3 JK |
896 | int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi); |
897 | ||
399ec807 AK |
898 | #else |
899 | ||
900 | static inline void kvm_free_irq_routing(struct kvm *kvm) {} | |
901 | ||
902 | #endif | |
903 | ||
721eecbf GH |
904 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
905 | ||
d34e6b17 | 906 | void kvm_eventfd_init(struct kvm *kvm); |
914daba8 AG |
907 | int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args); |
908 | ||
909 | #ifdef CONFIG_HAVE_KVM_IRQCHIP | |
d4db2935 | 910 | int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args); |
721eecbf | 911 | void kvm_irqfd_release(struct kvm *kvm); |
bd2b53b2 | 912 | void kvm_irq_routing_update(struct kvm *, struct kvm_irq_routing_table *); |
914daba8 AG |
913 | #else |
914 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) | |
915 | { | |
916 | return -EINVAL; | |
917 | } | |
918 | ||
919 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
920 | #endif | |
721eecbf GH |
921 | |
922 | #else | |
923 | ||
d34e6b17 | 924 | static inline void kvm_eventfd_init(struct kvm *kvm) {} |
bd2b53b2 | 925 | |
d4db2935 | 926 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) |
721eecbf GH |
927 | { |
928 | return -EINVAL; | |
929 | } | |
930 | ||
931 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
bd2b53b2 | 932 | |
27923eb1 | 933 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 MT |
934 | static inline void kvm_irq_routing_update(struct kvm *kvm, |
935 | struct kvm_irq_routing_table *irq_rt) | |
936 | { | |
937 | rcu_assign_pointer(kvm->irq_routing, irq_rt); | |
938 | } | |
27923eb1 | 939 | #endif |
bd2b53b2 | 940 | |
d34e6b17 GH |
941 | static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) |
942 | { | |
943 | return -ENOSYS; | |
944 | } | |
721eecbf GH |
945 | |
946 | #endif /* CONFIG_HAVE_KVM_EVENTFD */ | |
947 | ||
73880c80 | 948 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
c5af89b6 GN |
949 | static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu) |
950 | { | |
d3efc8ef | 951 | return vcpu->kvm->bsp_vcpu_id == vcpu->vcpu_id; |
c5af89b6 | 952 | } |
3e515705 AK |
953 | |
954 | bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu); | |
955 | ||
956 | #else | |
957 | ||
958 | static inline bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu) { return true; } | |
959 | ||
6aa8b732 | 960 | #endif |
bfd99ff5 AK |
961 | |
962 | #ifdef __KVM_HAVE_DEVICE_ASSIGNMENT | |
963 | ||
964 | long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, | |
965 | unsigned long arg); | |
966 | ||
967 | #else | |
968 | ||
969 | static inline long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, | |
970 | unsigned long arg) | |
971 | { | |
972 | return -ENOTTY; | |
973 | } | |
974 | ||
73880c80 | 975 | #endif |
bfd99ff5 | 976 | |
a8eeb04a AK |
977 | static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu) |
978 | { | |
979 | set_bit(req, &vcpu->requests); | |
980 | } | |
981 | ||
a8eeb04a AK |
982 | static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu) |
983 | { | |
0719837c AK |
984 | if (test_bit(req, &vcpu->requests)) { |
985 | clear_bit(req, &vcpu->requests); | |
986 | return true; | |
987 | } else { | |
988 | return false; | |
989 | } | |
a8eeb04a AK |
990 | } |
991 | ||
4c088493 R |
992 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
993 | ||
994 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
995 | { | |
996 | vcpu->spin_loop.in_spin_loop = val; | |
997 | } | |
998 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
999 | { | |
1000 | vcpu->spin_loop.dy_eligible = val; | |
1001 | } | |
1002 | ||
1003 | #else /* !CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ | |
1004 | ||
1005 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
1006 | { | |
1007 | } | |
1008 | ||
1009 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
1010 | { | |
1011 | } | |
1012 | ||
06e48c51 R |
1013 | static inline bool kvm_vcpu_eligible_for_directed_yield(struct kvm_vcpu *vcpu) |
1014 | { | |
1015 | return true; | |
1016 | } | |
1017 | ||
4c088493 | 1018 | #endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ |
bfd99ff5 AK |
1019 | #endif |
1020 |