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 | ||
f78146b0 AK |
45 | /* |
46 | * If we support unaligned MMIO, at most one fragment will be split into two: | |
47 | */ | |
48 | #ifdef KVM_UNALIGNED_MMIO | |
49 | # define KVM_EXTRA_MMIO_FRAGMENTS 1 | |
50 | #else | |
51 | # define KVM_EXTRA_MMIO_FRAGMENTS 0 | |
52 | #endif | |
53 | ||
54 | #define KVM_USER_MMIO_SIZE 8 | |
55 | ||
56 | #define KVM_MAX_MMIO_FRAGMENTS \ | |
57 | (KVM_MMIO_SIZE / KVM_USER_MMIO_SIZE + KVM_EXTRA_MMIO_FRAGMENTS) | |
58 | ||
9c5b1172 XG |
59 | /* |
60 | * For the normal pfn, the highest 12 bits should be zero, | |
61 | * so we can mask these bits to indicate the error. | |
62 | */ | |
63 | #define KVM_PFN_ERR_MASK (0xfffULL << 52) | |
64 | ||
65 | #define KVM_PFN_ERR_FAULT (KVM_PFN_ERR_MASK) | |
66 | #define KVM_PFN_ERR_HWPOISON (KVM_PFN_ERR_MASK + 1) | |
67 | #define KVM_PFN_ERR_BAD (KVM_PFN_ERR_MASK + 2) | |
69552c29 | 68 | #define KVM_PFN_ERR_RO_FAULT (KVM_PFN_ERR_MASK + 3) |
6c8ee57b | 69 | |
9c5b1172 | 70 | static inline bool is_error_pfn(pfn_t pfn) |
83f09228 | 71 | { |
9c5b1172 | 72 | return !!(pfn & KVM_PFN_ERR_MASK); |
83f09228 XG |
73 | } |
74 | ||
9c5b1172 | 75 | static inline bool is_noslot_pfn(pfn_t pfn) |
83f09228 | 76 | { |
9c5b1172 | 77 | return pfn == KVM_PFN_ERR_BAD; |
83f09228 XG |
78 | } |
79 | ||
9c5b1172 | 80 | static inline bool is_invalid_pfn(pfn_t pfn) |
83f09228 XG |
81 | { |
82 | return !is_noslot_pfn(pfn) && is_error_pfn(pfn); | |
83 | } | |
84 | ||
7068d097 XG |
85 | #define KVM_HVA_ERR_BAD (PAGE_OFFSET) |
86 | #define KVM_HVA_ERR_RO_BAD (PAGE_OFFSET + PAGE_SIZE) | |
ca3a490c XG |
87 | |
88 | static inline bool kvm_is_error_hva(unsigned long addr) | |
89 | { | |
7068d097 | 90 | return addr >= PAGE_OFFSET; |
ca3a490c XG |
91 | } |
92 | ||
6cede2e6 XG |
93 | #define KVM_ERR_PTR_BAD_PAGE (ERR_PTR(-ENOENT)) |
94 | ||
9c5b1172 | 95 | static inline bool is_error_page(struct page *page) |
6cede2e6 XG |
96 | { |
97 | return IS_ERR(page); | |
98 | } | |
99 | ||
d9e368d6 AK |
100 | /* |
101 | * vcpu->requests bit members | |
102 | */ | |
3176bc3e | 103 | #define KVM_REQ_TLB_FLUSH 0 |
2f52d58c | 104 | #define KVM_REQ_MIGRATE_TIMER 1 |
b209749f | 105 | #define KVM_REQ_REPORT_TPR_ACCESS 2 |
2e53d63a | 106 | #define KVM_REQ_MMU_RELOAD 3 |
71c4dfaf | 107 | #define KVM_REQ_TRIPLE_FAULT 4 |
06e05645 | 108 | #define KVM_REQ_PENDING_TIMER 5 |
d7690175 | 109 | #define KVM_REQ_UNHALT 6 |
4731d4c7 | 110 | #define KVM_REQ_MMU_SYNC 7 |
34c238a1 | 111 | #define KVM_REQ_CLOCK_UPDATE 8 |
32f88400 | 112 | #define KVM_REQ_KICK 9 |
02daab21 | 113 | #define KVM_REQ_DEACTIVATE_FPU 10 |
3842d135 | 114 | #define KVM_REQ_EVENT 11 |
af585b92 | 115 | #define KVM_REQ_APF_HALT 12 |
c9aaa895 | 116 | #define KVM_REQ_STEAL_UPDATE 13 |
7460fb4a | 117 | #define KVM_REQ_NMI 14 |
d6185f20 | 118 | #define KVM_REQ_IMMEDIATE_EXIT 15 |
f5132b01 GN |
119 | #define KVM_REQ_PMU 16 |
120 | #define KVM_REQ_PMI 17 | |
6aa8b732 | 121 | |
7a84428a AW |
122 | #define KVM_USERSPACE_IRQ_SOURCE_ID 0 |
123 | #define KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID 1 | |
5550af4d | 124 | |
6c474694 | 125 | struct kvm; |
6aa8b732 | 126 | struct kvm_vcpu; |
c16f862d | 127 | extern struct kmem_cache *kvm_vcpu_cache; |
6aa8b732 | 128 | |
743eeb0b SL |
129 | struct kvm_io_range { |
130 | gpa_t addr; | |
131 | int len; | |
132 | struct kvm_io_device *dev; | |
133 | }; | |
134 | ||
786a9f88 | 135 | #define NR_IOBUS_DEVS 1000 |
a1300716 | 136 | |
2eeb2e94 GH |
137 | struct kvm_io_bus { |
138 | int dev_count; | |
a1300716 | 139 | struct kvm_io_range range[]; |
2eeb2e94 GH |
140 | }; |
141 | ||
e93f8a0f MT |
142 | enum kvm_bus { |
143 | KVM_MMIO_BUS, | |
144 | KVM_PIO_BUS, | |
145 | KVM_NR_BUSES | |
146 | }; | |
147 | ||
148 | int kvm_io_bus_write(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, | |
149 | int len, const void *val); | |
150 | int kvm_io_bus_read(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, int len, | |
bda9020e | 151 | void *val); |
743eeb0b SL |
152 | int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, |
153 | int len, struct kvm_io_device *dev); | |
e93f8a0f MT |
154 | int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx, |
155 | struct kvm_io_device *dev); | |
2eeb2e94 | 156 | |
af585b92 GN |
157 | #ifdef CONFIG_KVM_ASYNC_PF |
158 | struct kvm_async_pf { | |
159 | struct work_struct work; | |
160 | struct list_head link; | |
161 | struct list_head queue; | |
162 | struct kvm_vcpu *vcpu; | |
163 | struct mm_struct *mm; | |
164 | gva_t gva; | |
165 | unsigned long addr; | |
166 | struct kvm_arch_async_pf arch; | |
167 | struct page *page; | |
168 | bool done; | |
169 | }; | |
170 | ||
171 | void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu); | |
172 | void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu); | |
173 | int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, gfn_t gfn, | |
174 | struct kvm_arch_async_pf *arch); | |
344d9588 | 175 | int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu); |
af585b92 GN |
176 | #endif |
177 | ||
6b7e2d09 XG |
178 | enum { |
179 | OUTSIDE_GUEST_MODE, | |
180 | IN_GUEST_MODE, | |
c142786c AK |
181 | EXITING_GUEST_MODE, |
182 | READING_SHADOW_PAGE_TABLES, | |
6b7e2d09 XG |
183 | }; |
184 | ||
f78146b0 AK |
185 | /* |
186 | * Sometimes a large or cross-page mmio needs to be broken up into separate | |
187 | * exits for userspace servicing. | |
188 | */ | |
189 | struct kvm_mmio_fragment { | |
190 | gpa_t gpa; | |
191 | void *data; | |
192 | unsigned len; | |
193 | }; | |
194 | ||
d17fbbf7 ZX |
195 | struct kvm_vcpu { |
196 | struct kvm *kvm; | |
31bb117e | 197 | #ifdef CONFIG_PREEMPT_NOTIFIERS |
d17fbbf7 | 198 | struct preempt_notifier preempt_notifier; |
31bb117e | 199 | #endif |
6b7e2d09 | 200 | int cpu; |
d17fbbf7 | 201 | int vcpu_id; |
6b7e2d09 XG |
202 | int srcu_idx; |
203 | int mode; | |
d17fbbf7 | 204 | unsigned long requests; |
d0bfb940 | 205 | unsigned long guest_debug; |
6b7e2d09 XG |
206 | |
207 | struct mutex mutex; | |
208 | struct kvm_run *run; | |
f656ce01 | 209 | |
d17fbbf7 | 210 | int fpu_active; |
2acf923e | 211 | int guest_fpu_loaded, guest_xcr0_loaded; |
d17fbbf7 | 212 | wait_queue_head_t wq; |
34bb10b7 | 213 | struct pid *pid; |
d17fbbf7 ZX |
214 | int sigset_active; |
215 | sigset_t sigset; | |
216 | struct kvm_vcpu_stat stat; | |
217 | ||
34c16eec | 218 | #ifdef CONFIG_HAS_IOMEM |
d17fbbf7 ZX |
219 | int mmio_needed; |
220 | int mmio_read_completed; | |
221 | int mmio_is_write; | |
f78146b0 AK |
222 | int mmio_cur_fragment; |
223 | int mmio_nr_fragments; | |
224 | struct kvm_mmio_fragment mmio_fragments[KVM_MAX_MMIO_FRAGMENTS]; | |
34c16eec | 225 | #endif |
1165f5fe | 226 | |
af585b92 GN |
227 | #ifdef CONFIG_KVM_ASYNC_PF |
228 | struct { | |
229 | u32 queued; | |
230 | struct list_head queue; | |
231 | struct list_head done; | |
232 | spinlock_t lock; | |
233 | } async_pf; | |
234 | #endif | |
235 | ||
4c088493 R |
236 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
237 | /* | |
238 | * Cpu relax intercept or pause loop exit optimization | |
239 | * in_spin_loop: set when a vcpu does a pause loop exit | |
240 | * or cpu relax intercepted. | |
241 | * dy_eligible: indicates whether vcpu is eligible for directed yield. | |
242 | */ | |
243 | struct { | |
244 | bool in_spin_loop; | |
245 | bool dy_eligible; | |
246 | } spin_loop; | |
247 | #endif | |
d657a98e ZX |
248 | struct kvm_vcpu_arch arch; |
249 | }; | |
250 | ||
6b7e2d09 XG |
251 | static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu) |
252 | { | |
253 | return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE); | |
254 | } | |
255 | ||
660c22c4 TY |
256 | /* |
257 | * Some of the bitops functions do not support too long bitmaps. | |
258 | * This number must be determined not to exceed such limits. | |
259 | */ | |
260 | #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1) | |
261 | ||
6aa8b732 AK |
262 | struct kvm_memory_slot { |
263 | gfn_t base_gfn; | |
264 | unsigned long npages; | |
265 | unsigned long flags; | |
6aa8b732 | 266 | unsigned long *dirty_bitmap; |
db3fe4eb | 267 | struct kvm_arch_memory_slot arch; |
8a7ae055 | 268 | unsigned long userspace_addr; |
80b14b5b | 269 | int user_alloc; |
e36d96f7 | 270 | int id; |
6aa8b732 AK |
271 | }; |
272 | ||
87bf6e7d TY |
273 | static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot) |
274 | { | |
275 | return ALIGN(memslot->npages, BITS_PER_LONG) / 8; | |
276 | } | |
277 | ||
399ec807 AK |
278 | struct kvm_kernel_irq_routing_entry { |
279 | u32 gsi; | |
5116d8f6 | 280 | u32 type; |
4925663a | 281 | int (*set)(struct kvm_kernel_irq_routing_entry *e, |
1a6e4a8c | 282 | struct kvm *kvm, int irq_source_id, int level); |
399ec807 AK |
283 | union { |
284 | struct { | |
285 | unsigned irqchip; | |
286 | unsigned pin; | |
287 | } irqchip; | |
79950e10 | 288 | struct msi_msg msi; |
399ec807 | 289 | }; |
46e624b9 GN |
290 | struct hlist_node link; |
291 | }; | |
292 | ||
3e71f88b GN |
293 | #ifdef __KVM_HAVE_IOAPIC |
294 | ||
46e624b9 | 295 | struct kvm_irq_routing_table { |
3e71f88b | 296 | int chip[KVM_NR_IRQCHIPS][KVM_IOAPIC_NUM_PINS]; |
46e624b9 GN |
297 | struct kvm_kernel_irq_routing_entry *rt_entries; |
298 | u32 nr_rt_entries; | |
299 | /* | |
300 | * Array indexed by gsi. Each entry contains list of irq chips | |
301 | * the gsi is connected to. | |
302 | */ | |
303 | struct hlist_head map[0]; | |
399ec807 AK |
304 | }; |
305 | ||
3e71f88b GN |
306 | #else |
307 | ||
308 | struct kvm_irq_routing_table {}; | |
309 | ||
310 | #endif | |
311 | ||
93a5cef0 XG |
312 | #ifndef KVM_MEM_SLOTS_NUM |
313 | #define KVM_MEM_SLOTS_NUM (KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS) | |
314 | #endif | |
315 | ||
bf3e05bc XG |
316 | /* |
317 | * Note: | |
318 | * memslots are not sorted by id anymore, please use id_to_memslot() | |
319 | * to get the memslot by its id. | |
320 | */ | |
46a26bf5 | 321 | struct kvm_memslots { |
49c7754c | 322 | u64 generation; |
93a5cef0 | 323 | struct kvm_memory_slot memslots[KVM_MEM_SLOTS_NUM]; |
f85e2cb5 XG |
324 | /* The mapping table from slot id to the index in memslots[]. */ |
325 | int id_to_index[KVM_MEM_SLOTS_NUM]; | |
46a26bf5 MT |
326 | }; |
327 | ||
6aa8b732 | 328 | struct kvm { |
aaee2c94 | 329 | spinlock_t mmu_lock; |
79fac95e | 330 | struct mutex slots_lock; |
6d4e4c4f | 331 | struct mm_struct *mm; /* userspace tied to this vm */ |
46a26bf5 | 332 | struct kvm_memslots *memslots; |
bc6678a3 | 333 | struct srcu_struct srcu; |
73880c80 GN |
334 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
335 | u32 bsp_vcpu_id; | |
73880c80 | 336 | #endif |
fb3f0f51 | 337 | struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; |
73880c80 | 338 | atomic_t online_vcpus; |
217ece61 | 339 | int last_boosted_vcpu; |
133de902 | 340 | struct list_head vm_list; |
60eead79 | 341 | struct mutex lock; |
e93f8a0f | 342 | struct kvm_io_bus *buses[KVM_NR_BUSES]; |
721eecbf GH |
343 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
344 | struct { | |
345 | spinlock_t lock; | |
346 | struct list_head items; | |
7a84428a AW |
347 | struct list_head resampler_list; |
348 | struct mutex resampler_lock; | |
721eecbf | 349 | } irqfds; |
d34e6b17 | 350 | struct list_head ioeventfds; |
721eecbf | 351 | #endif |
ba1389b7 | 352 | struct kvm_vm_stat stat; |
d69fb81f | 353 | struct kvm_arch arch; |
d39f13b0 | 354 | atomic_t users_count; |
5f94c174 | 355 | #ifdef KVM_COALESCED_MMIO_PAGE_OFFSET |
5f94c174 | 356 | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; |
2b3c246a SL |
357 | spinlock_t ring_lock; |
358 | struct list_head coalesced_zones; | |
5f94c174 | 359 | #endif |
e930bffe | 360 | |
60eead79 | 361 | struct mutex irq_lock; |
75858a84 | 362 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 MT |
363 | /* |
364 | * Update side is protected by irq_lock and, | |
365 | * if configured, irqfds.lock. | |
366 | */ | |
4b6a2872 | 367 | struct kvm_irq_routing_table __rcu *irq_routing; |
75858a84 | 368 | struct hlist_head mask_notifier_list; |
136bdfee | 369 | struct hlist_head irq_ack_notifier_list; |
75858a84 AK |
370 | #endif |
371 | ||
36c1ed82 | 372 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
e930bffe AA |
373 | struct mmu_notifier mmu_notifier; |
374 | unsigned long mmu_notifier_seq; | |
375 | long mmu_notifier_count; | |
376 | #endif | |
5c663a15 | 377 | long tlbs_dirty; |
6aa8b732 AK |
378 | }; |
379 | ||
a737f256 CD |
380 | #define kvm_err(fmt, ...) \ |
381 | pr_err("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
382 | #define kvm_info(fmt, ...) \ | |
383 | pr_info("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
384 | #define kvm_debug(fmt, ...) \ | |
385 | pr_debug("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
386 | #define kvm_pr_unimpl(fmt, ...) \ | |
387 | pr_err_ratelimited("kvm [%i]: " fmt, \ | |
388 | task_tgid_nr(current), ## __VA_ARGS__) | |
f0242478 | 389 | |
a737f256 CD |
390 | /* The guest did something we don't support. */ |
391 | #define vcpu_unimpl(vcpu, fmt, ...) \ | |
392 | kvm_pr_unimpl("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__) | |
6aa8b732 | 393 | |
988a2cae GN |
394 | static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i) |
395 | { | |
396 | smp_rmb(); | |
397 | return kvm->vcpus[i]; | |
398 | } | |
399 | ||
400 | #define kvm_for_each_vcpu(idx, vcpup, kvm) \ | |
b42fc3cb JM |
401 | for (idx = 0; \ |
402 | idx < atomic_read(&kvm->online_vcpus) && \ | |
403 | (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \ | |
404 | idx++) | |
988a2cae | 405 | |
be6ba0f0 XG |
406 | #define kvm_for_each_memslot(memslot, slots) \ |
407 | for (memslot = &slots->memslots[0]; \ | |
bf3e05bc XG |
408 | memslot < slots->memslots + KVM_MEM_SLOTS_NUM && memslot->npages;\ |
409 | memslot++) | |
be6ba0f0 | 410 | |
fb3f0f51 RR |
411 | int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id); |
412 | void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); | |
413 | ||
9fc77441 | 414 | int __must_check vcpu_load(struct kvm_vcpu *vcpu); |
313a3dc7 CO |
415 | void vcpu_put(struct kvm_vcpu *vcpu); |
416 | ||
0ee75bea | 417 | int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, |
c16f862d | 418 | struct module *module); |
cb498ea2 | 419 | void kvm_exit(void); |
6aa8b732 | 420 | |
d39f13b0 IE |
421 | void kvm_get_kvm(struct kvm *kvm); |
422 | void kvm_put_kvm(struct kvm *kvm); | |
be593d62 | 423 | void update_memslots(struct kvm_memslots *slots, struct kvm_memory_slot *new); |
d39f13b0 | 424 | |
90d83dc3 LJ |
425 | static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm) |
426 | { | |
427 | return rcu_dereference_check(kvm->memslots, | |
428 | srcu_read_lock_held(&kvm->srcu) | |
429 | || lockdep_is_held(&kvm->slots_lock)); | |
430 | } | |
431 | ||
28a37544 XG |
432 | static inline struct kvm_memory_slot * |
433 | id_to_memslot(struct kvm_memslots *slots, int id) | |
434 | { | |
f85e2cb5 XG |
435 | int index = slots->id_to_index[id]; |
436 | struct kvm_memory_slot *slot; | |
bf3e05bc | 437 | |
f85e2cb5 | 438 | slot = &slots->memslots[index]; |
bf3e05bc | 439 | |
f85e2cb5 XG |
440 | WARN_ON(slot->id != id); |
441 | return slot; | |
28a37544 XG |
442 | } |
443 | ||
210c7c4d IE |
444 | int kvm_set_memory_region(struct kvm *kvm, |
445 | struct kvm_userspace_memory_region *mem, | |
446 | int user_alloc); | |
f78e0e2e SY |
447 | int __kvm_set_memory_region(struct kvm *kvm, |
448 | struct kvm_userspace_memory_region *mem, | |
449 | int user_alloc); | |
db3fe4eb TY |
450 | void kvm_arch_free_memslot(struct kvm_memory_slot *free, |
451 | struct kvm_memory_slot *dont); | |
452 | int kvm_arch_create_memslot(struct kvm_memory_slot *slot, unsigned long npages); | |
f7784b8e MT |
453 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
454 | struct kvm_memory_slot *memslot, | |
455 | struct kvm_memory_slot old, | |
456 | struct kvm_userspace_memory_region *mem, | |
457 | int user_alloc); | |
458 | void kvm_arch_commit_memory_region(struct kvm *kvm, | |
0de10343 ZX |
459 | struct kvm_userspace_memory_region *mem, |
460 | struct kvm_memory_slot old, | |
461 | int user_alloc); | |
db3fe4eb | 462 | bool kvm_largepages_enabled(void); |
54dee993 | 463 | void kvm_disable_largepages(void); |
2df72e9b MT |
464 | /* flush all memory translations */ |
465 | void kvm_arch_flush_shadow_all(struct kvm *kvm); | |
466 | /* flush memory translations pointing to 'slot' */ | |
467 | void kvm_arch_flush_shadow_memslot(struct kvm *kvm, | |
468 | struct kvm_memory_slot *slot); | |
a983fb23 | 469 | |
48987781 XG |
470 | int gfn_to_page_many_atomic(struct kvm *kvm, gfn_t gfn, struct page **pages, |
471 | int nr_pages); | |
472 | ||
954bbbc2 | 473 | struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); |
05da4558 | 474 | unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn); |
4d8b81ab | 475 | unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
b4231d61 IE |
476 | void kvm_release_page_clean(struct page *page); |
477 | void kvm_release_page_dirty(struct page *page); | |
35149e21 AL |
478 | void kvm_set_page_dirty(struct page *page); |
479 | void kvm_set_page_accessed(struct page *page); | |
480 | ||
365fb3fd | 481 | pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn); |
612819c3 MT |
482 | pfn_t gfn_to_pfn_async(struct kvm *kvm, gfn_t gfn, bool *async, |
483 | bool write_fault, bool *writable); | |
35149e21 | 484 | pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn); |
612819c3 MT |
485 | pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault, |
486 | bool *writable); | |
d5661048 | 487 | pfn_t gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
037d92dc XG |
488 | pfn_t gfn_to_pfn_memslot_atomic(struct kvm_memory_slot *slot, gfn_t gfn); |
489 | ||
32cad84f | 490 | void kvm_release_pfn_dirty(pfn_t pfn); |
35149e21 AL |
491 | void kvm_release_pfn_clean(pfn_t pfn); |
492 | void kvm_set_pfn_dirty(pfn_t pfn); | |
493 | void kvm_set_pfn_accessed(pfn_t pfn); | |
494 | void kvm_get_pfn(pfn_t pfn); | |
495 | ||
195aefde IE |
496 | int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, |
497 | int len); | |
7ec54588 MT |
498 | int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data, |
499 | unsigned long len); | |
195aefde | 500 | int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); |
e03b644f GN |
501 | int kvm_read_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
502 | void *data, unsigned long len); | |
195aefde IE |
503 | int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, |
504 | int offset, int len); | |
505 | int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, | |
506 | unsigned long len); | |
49c7754c GN |
507 | int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
508 | void *data, unsigned long len); | |
509 | int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc, | |
510 | gpa_t gpa); | |
195aefde IE |
511 | int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); |
512 | int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); | |
6aa8b732 | 513 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); |
e0d62c7f | 514 | int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); |
8f0b1ab6 | 515 | unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn); |
6aa8b732 | 516 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); |
49c7754c GN |
517 | void mark_page_dirty_in_slot(struct kvm *kvm, struct kvm_memory_slot *memslot, |
518 | gfn_t gfn); | |
6aa8b732 | 519 | |
8776e519 | 520 | void kvm_vcpu_block(struct kvm_vcpu *vcpu); |
b6d33834 | 521 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
41628d33 | 522 | bool kvm_vcpu_yield_to(struct kvm_vcpu *target); |
d255f4f2 | 523 | void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu); |
6aa8b732 | 524 | void kvm_resched(struct kvm_vcpu *vcpu); |
7702fd1f AK |
525 | void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); |
526 | void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); | |
a4ee1ca4 | 527 | |
d9e368d6 | 528 | void kvm_flush_remote_tlbs(struct kvm *kvm); |
2e53d63a | 529 | void kvm_reload_remote_mmus(struct kvm *kvm); |
6aa8b732 | 530 | |
043405e1 CO |
531 | long kvm_arch_dev_ioctl(struct file *filp, |
532 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 CO |
533 | long kvm_arch_vcpu_ioctl(struct file *filp, |
534 | unsigned int ioctl, unsigned long arg); | |
5b1c1493 | 535 | int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf); |
018d00d2 ZX |
536 | |
537 | int kvm_dev_ioctl_check_extension(long ext); | |
538 | ||
5bb064dc ZX |
539 | int kvm_get_dirty_log(struct kvm *kvm, |
540 | struct kvm_dirty_log *log, int *is_dirty); | |
541 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, | |
542 | struct kvm_dirty_log *log); | |
543 | ||
1fe779f8 CO |
544 | int kvm_vm_ioctl_set_memory_region(struct kvm *kvm, |
545 | struct | |
546 | kvm_userspace_memory_region *mem, | |
547 | int user_alloc); | |
23d43cf9 | 548 | int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_level); |
1fe779f8 CO |
549 | long kvm_arch_vm_ioctl(struct file *filp, |
550 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 | 551 | |
d0752060 HB |
552 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); |
553 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); | |
554 | ||
8b006791 ZX |
555 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, |
556 | struct kvm_translation *tr); | |
557 | ||
b6c7a5dc HB |
558 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); |
559 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); | |
560 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
561 | struct kvm_sregs *sregs); | |
562 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
563 | struct kvm_sregs *sregs); | |
62d9f0db MT |
564 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
565 | struct kvm_mp_state *mp_state); | |
566 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
567 | struct kvm_mp_state *mp_state); | |
d0bfb940 JK |
568 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
569 | struct kvm_guest_debug *dbg); | |
b6c7a5dc HB |
570 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); |
571 | ||
f8c16bba ZX |
572 | int kvm_arch_init(void *opaque); |
573 | void kvm_arch_exit(void); | |
043405e1 | 574 | |
e9b11c17 ZX |
575 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); |
576 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu); | |
577 | ||
578 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu); | |
579 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
580 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); | |
581 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); | |
26e5215f | 582 | int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu); |
d40ccc62 | 583 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu); |
e9b11c17 ZX |
584 | |
585 | int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu); | |
10474ae8 | 586 | int kvm_arch_hardware_enable(void *garbage); |
e9b11c17 ZX |
587 | void kvm_arch_hardware_disable(void *garbage); |
588 | int kvm_arch_hardware_setup(void); | |
589 | void kvm_arch_hardware_unsetup(void); | |
590 | void kvm_arch_check_processor_compat(void *rtn); | |
1d737c8a | 591 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu); |
b6d33834 | 592 | int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu); |
e9b11c17 | 593 | |
d19a9cd2 ZX |
594 | void kvm_free_physmem(struct kvm *kvm); |
595 | ||
c1a7b32a TY |
596 | void *kvm_kvzalloc(unsigned long size); |
597 | void kvm_kvfree(const void *addr); | |
598 | ||
d89f5eff JK |
599 | #ifndef __KVM_HAVE_ARCH_VM_ALLOC |
600 | static inline struct kvm *kvm_arch_alloc_vm(void) | |
601 | { | |
602 | return kzalloc(sizeof(struct kvm), GFP_KERNEL); | |
603 | } | |
604 | ||
605 | static inline void kvm_arch_free_vm(struct kvm *kvm) | |
606 | { | |
607 | kfree(kvm); | |
608 | } | |
609 | #endif | |
610 | ||
b6d33834 CD |
611 | static inline wait_queue_head_t *kvm_arch_vcpu_wq(struct kvm_vcpu *vcpu) |
612 | { | |
2246f8b5 AG |
613 | #ifdef __KVM_HAVE_ARCH_WQP |
614 | return vcpu->arch.wqp; | |
615 | #else | |
b6d33834 | 616 | return &vcpu->wq; |
b6d33834 | 617 | #endif |
2246f8b5 | 618 | } |
b6d33834 | 619 | |
e08b9637 | 620 | int kvm_arch_init_vm(struct kvm *kvm, unsigned long type); |
d19a9cd2 | 621 | void kvm_arch_destroy_vm(struct kvm *kvm); |
8a98f664 | 622 | void kvm_free_all_assigned_devices(struct kvm *kvm); |
ad8ba2cd | 623 | void kvm_arch_sync_events(struct kvm *kvm); |
e9b11c17 | 624 | |
3d80840d | 625 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu); |
5736199a | 626 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
682c59a3 | 627 | |
a2766325 | 628 | bool kvm_is_mmio_pfn(pfn_t pfn); |
c77fb9dc | 629 | |
62c476c7 BAY |
630 | struct kvm_irq_ack_notifier { |
631 | struct hlist_node link; | |
632 | unsigned gsi; | |
633 | void (*irq_acked)(struct kvm_irq_ack_notifier *kian); | |
634 | }; | |
635 | ||
636 | struct kvm_assigned_dev_kernel { | |
637 | struct kvm_irq_ack_notifier ack_notifier; | |
62c476c7 BAY |
638 | struct list_head list; |
639 | int assigned_dev_id; | |
ab9f4ecb | 640 | int host_segnr; |
62c476c7 BAY |
641 | int host_busnr; |
642 | int host_devfn; | |
c1e01514 | 643 | unsigned int entries_nr; |
62c476c7 | 644 | int host_irq; |
defaf158 | 645 | bool host_irq_disabled; |
07700a94 | 646 | bool pci_2_3; |
c1e01514 | 647 | struct msix_entry *host_msix_entries; |
62c476c7 | 648 | int guest_irq; |
0645211c | 649 | struct msix_entry *guest_msix_entries; |
4f906c19 | 650 | unsigned long irq_requested_type; |
5550af4d | 651 | int irq_source_id; |
b653574a | 652 | int flags; |
62c476c7 BAY |
653 | struct pci_dev *dev; |
654 | struct kvm *kvm; | |
0645211c | 655 | spinlock_t intx_lock; |
cf9eeac4 | 656 | spinlock_t intx_mask_lock; |
1e001d49 | 657 | char irq_name[32]; |
f8fcfd77 | 658 | struct pci_saved_state *pci_saved_state; |
62c476c7 | 659 | }; |
75858a84 AK |
660 | |
661 | struct kvm_irq_mask_notifier { | |
662 | void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked); | |
663 | int irq; | |
664 | struct hlist_node link; | |
665 | }; | |
666 | ||
667 | void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq, | |
668 | struct kvm_irq_mask_notifier *kimn); | |
669 | void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq, | |
670 | struct kvm_irq_mask_notifier *kimn); | |
4a994358 GN |
671 | void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin, |
672 | bool mask); | |
75858a84 | 673 | |
46e624b9 GN |
674 | #ifdef __KVM_HAVE_IOAPIC |
675 | void kvm_get_intr_delivery_bitmask(struct kvm_ioapic *ioapic, | |
676 | union kvm_ioapic_redirect_entry *entry, | |
677 | unsigned long *deliver_bitmask); | |
678 | #endif | |
679 | int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level); | |
bd2b53b2 MT |
680 | int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm, |
681 | int irq_source_id, int level); | |
44882eed | 682 | void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin); |
3de42dc0 XZ |
683 | void kvm_register_irq_ack_notifier(struct kvm *kvm, |
684 | struct kvm_irq_ack_notifier *kian); | |
fa40a821 MT |
685 | void kvm_unregister_irq_ack_notifier(struct kvm *kvm, |
686 | struct kvm_irq_ack_notifier *kian); | |
5550af4d SY |
687 | int kvm_request_irq_source_id(struct kvm *kvm); |
688 | void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id); | |
62c476c7 | 689 | |
522c68c4 SY |
690 | /* For vcpu->arch.iommu_flags */ |
691 | #define KVM_IOMMU_CACHE_COHERENCY 0x1 | |
692 | ||
19de40a8 | 693 | #ifdef CONFIG_IOMMU_API |
3ad26d81 | 694 | int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
32f6daad | 695 | void kvm_iommu_unmap_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
260782bc | 696 | int kvm_iommu_map_guest(struct kvm *kvm); |
62c476c7 | 697 | int kvm_iommu_unmap_guest(struct kvm *kvm); |
260782bc WH |
698 | int kvm_assign_device(struct kvm *kvm, |
699 | struct kvm_assigned_dev_kernel *assigned_dev); | |
0a920356 WH |
700 | int kvm_deassign_device(struct kvm *kvm, |
701 | struct kvm_assigned_dev_kernel *assigned_dev); | |
19de40a8 | 702 | #else /* CONFIG_IOMMU_API */ |
62c476c7 | 703 | static inline int kvm_iommu_map_pages(struct kvm *kvm, |
d7a79b6c | 704 | struct kvm_memory_slot *slot) |
62c476c7 BAY |
705 | { |
706 | return 0; | |
707 | } | |
708 | ||
32f6daad AW |
709 | static inline void kvm_iommu_unmap_pages(struct kvm *kvm, |
710 | struct kvm_memory_slot *slot) | |
711 | { | |
712 | } | |
713 | ||
260782bc | 714 | static inline int kvm_iommu_map_guest(struct kvm *kvm) |
62c476c7 BAY |
715 | { |
716 | return -ENODEV; | |
717 | } | |
718 | ||
719 | static inline int kvm_iommu_unmap_guest(struct kvm *kvm) | |
720 | { | |
721 | return 0; | |
722 | } | |
260782bc WH |
723 | |
724 | static inline int kvm_assign_device(struct kvm *kvm, | |
725 | struct kvm_assigned_dev_kernel *assigned_dev) | |
726 | { | |
727 | return 0; | |
728 | } | |
0a920356 WH |
729 | |
730 | static inline int kvm_deassign_device(struct kvm *kvm, | |
731 | struct kvm_assigned_dev_kernel *assigned_dev) | |
732 | { | |
733 | return 0; | |
734 | } | |
19de40a8 | 735 | #endif /* CONFIG_IOMMU_API */ |
62c476c7 | 736 | |
d172fcd3 LV |
737 | static inline void kvm_guest_enter(void) |
738 | { | |
8fa22068 | 739 | BUG_ON(preemptible()); |
bf9fae9f | 740 | vtime_account(current); |
d172fcd3 | 741 | current->flags |= PF_VCPU; |
8fa22068 GN |
742 | /* KVM does not hold any references to rcu protected data when it |
743 | * switches CPU into a guest mode. In fact switching to a guest mode | |
744 | * is very similar to exiting to userspase from rcu point of view. In | |
745 | * addition CPU may stay in a guest mode for quite a long time (up to | |
746 | * one time slice). Lets treat guest mode as quiescent state, just like | |
747 | * we do with user-mode execution. | |
748 | */ | |
749 | rcu_virt_note_context_switch(smp_processor_id()); | |
d172fcd3 LV |
750 | } |
751 | ||
752 | static inline void kvm_guest_exit(void) | |
753 | { | |
bf9fae9f | 754 | vtime_account(current); |
d172fcd3 LV |
755 | current->flags &= ~PF_VCPU; |
756 | } | |
757 | ||
9d4cba7f PM |
758 | /* |
759 | * search_memslots() and __gfn_to_memslot() are here because they are | |
760 | * used in non-modular code in arch/powerpc/kvm/book3s_hv_rm_mmu.c. | |
761 | * gfn_to_memslot() itself isn't here as an inline because that would | |
762 | * bloat other code too much. | |
763 | */ | |
764 | static inline struct kvm_memory_slot * | |
765 | search_memslots(struct kvm_memslots *slots, gfn_t gfn) | |
766 | { | |
767 | struct kvm_memory_slot *memslot; | |
768 | ||
769 | kvm_for_each_memslot(memslot, slots) | |
770 | if (gfn >= memslot->base_gfn && | |
771 | gfn < memslot->base_gfn + memslot->npages) | |
772 | return memslot; | |
773 | ||
774 | return NULL; | |
775 | } | |
776 | ||
777 | static inline struct kvm_memory_slot * | |
778 | __gfn_to_memslot(struct kvm_memslots *slots, gfn_t gfn) | |
779 | { | |
780 | return search_memslots(slots, gfn); | |
781 | } | |
782 | ||
66a03505 GS |
783 | static inline unsigned long |
784 | __gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn) | |
785 | { | |
786 | return slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE; | |
787 | } | |
788 | ||
0ee8dcb8 XG |
789 | static inline int memslot_id(struct kvm *kvm, gfn_t gfn) |
790 | { | |
791 | return gfn_to_memslot(kvm, gfn)->id; | |
792 | } | |
793 | ||
fb03cb6f TY |
794 | static inline gfn_t gfn_to_index(gfn_t gfn, gfn_t base_gfn, int level) |
795 | { | |
796 | /* KVM_HPAGE_GFN_SHIFT(PT_PAGE_TABLE_LEVEL) must be 0. */ | |
797 | return (gfn >> KVM_HPAGE_GFN_SHIFT(level)) - | |
798 | (base_gfn >> KVM_HPAGE_GFN_SHIFT(level)); | |
799 | } | |
800 | ||
d19a748b TY |
801 | static inline gfn_t |
802 | hva_to_gfn_memslot(unsigned long hva, struct kvm_memory_slot *slot) | |
887c08ac | 803 | { |
d19a748b TY |
804 | gfn_t gfn_offset = (hva - slot->userspace_addr) >> PAGE_SHIFT; |
805 | ||
806 | return slot->base_gfn + gfn_offset; | |
887c08ac XG |
807 | } |
808 | ||
1755fbcc AK |
809 | static inline gpa_t gfn_to_gpa(gfn_t gfn) |
810 | { | |
811 | return (gpa_t)gfn << PAGE_SHIFT; | |
812 | } | |
6aa8b732 | 813 | |
c30a358d JR |
814 | static inline gfn_t gpa_to_gfn(gpa_t gpa) |
815 | { | |
816 | return (gfn_t)(gpa >> PAGE_SHIFT); | |
817 | } | |
818 | ||
62c476c7 BAY |
819 | static inline hpa_t pfn_to_hpa(pfn_t pfn) |
820 | { | |
821 | return (hpa_t)pfn << PAGE_SHIFT; | |
822 | } | |
823 | ||
2f599714 | 824 | static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu) |
2f52d58c AK |
825 | { |
826 | set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests); | |
827 | } | |
828 | ||
ba1389b7 AK |
829 | enum kvm_stat_kind { |
830 | KVM_STAT_VM, | |
831 | KVM_STAT_VCPU, | |
832 | }; | |
833 | ||
417bc304 HB |
834 | struct kvm_stats_debugfs_item { |
835 | const char *name; | |
836 | int offset; | |
ba1389b7 | 837 | enum kvm_stat_kind kind; |
417bc304 HB |
838 | struct dentry *dentry; |
839 | }; | |
840 | extern struct kvm_stats_debugfs_item debugfs_entries[]; | |
76f7c879 | 841 | extern struct dentry *kvm_debugfs_dir; |
d4c9ff2d | 842 | |
36c1ed82 | 843 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
e930bffe AA |
844 | static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_seq) |
845 | { | |
846 | if (unlikely(vcpu->kvm->mmu_notifier_count)) | |
847 | return 1; | |
848 | /* | |
a355aa54 PM |
849 | * Ensure the read of mmu_notifier_count happens before the read |
850 | * of mmu_notifier_seq. This interacts with the smp_wmb() in | |
851 | * mmu_notifier_invalidate_range_end to make sure that the caller | |
852 | * either sees the old (non-zero) value of mmu_notifier_count or | |
853 | * the new (incremented) value of mmu_notifier_seq. | |
854 | * PowerPC Book3s HV KVM calls this under a per-page lock | |
855 | * rather than under kvm->mmu_lock, for scalability, so | |
856 | * can't rely on kvm->mmu_lock to keep things ordered. | |
e930bffe | 857 | */ |
a355aa54 | 858 | smp_rmb(); |
e930bffe AA |
859 | if (vcpu->kvm->mmu_notifier_seq != mmu_seq) |
860 | return 1; | |
861 | return 0; | |
862 | } | |
863 | #endif | |
864 | ||
9900b4b4 | 865 | #ifdef KVM_CAP_IRQ_ROUTING |
399ec807 AK |
866 | |
867 | #define KVM_MAX_IRQ_ROUTES 1024 | |
868 | ||
869 | int kvm_setup_default_irq_routing(struct kvm *kvm); | |
870 | int kvm_set_irq_routing(struct kvm *kvm, | |
871 | const struct kvm_irq_routing_entry *entries, | |
872 | unsigned nr, | |
873 | unsigned flags); | |
874 | void kvm_free_irq_routing(struct kvm *kvm); | |
875 | ||
07975ad3 JK |
876 | int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi); |
877 | ||
399ec807 AK |
878 | #else |
879 | ||
880 | static inline void kvm_free_irq_routing(struct kvm *kvm) {} | |
881 | ||
882 | #endif | |
883 | ||
721eecbf GH |
884 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
885 | ||
d34e6b17 | 886 | void kvm_eventfd_init(struct kvm *kvm); |
d4db2935 | 887 | int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args); |
721eecbf | 888 | void kvm_irqfd_release(struct kvm *kvm); |
bd2b53b2 | 889 | void kvm_irq_routing_update(struct kvm *, struct kvm_irq_routing_table *); |
d34e6b17 | 890 | int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args); |
721eecbf GH |
891 | |
892 | #else | |
893 | ||
d34e6b17 | 894 | static inline void kvm_eventfd_init(struct kvm *kvm) {} |
bd2b53b2 | 895 | |
d4db2935 | 896 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) |
721eecbf GH |
897 | { |
898 | return -EINVAL; | |
899 | } | |
900 | ||
901 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
bd2b53b2 | 902 | |
27923eb1 | 903 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 MT |
904 | static inline void kvm_irq_routing_update(struct kvm *kvm, |
905 | struct kvm_irq_routing_table *irq_rt) | |
906 | { | |
907 | rcu_assign_pointer(kvm->irq_routing, irq_rt); | |
908 | } | |
27923eb1 | 909 | #endif |
bd2b53b2 | 910 | |
d34e6b17 GH |
911 | static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) |
912 | { | |
913 | return -ENOSYS; | |
914 | } | |
721eecbf GH |
915 | |
916 | #endif /* CONFIG_HAVE_KVM_EVENTFD */ | |
917 | ||
73880c80 | 918 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
c5af89b6 GN |
919 | static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu) |
920 | { | |
d3efc8ef | 921 | return vcpu->kvm->bsp_vcpu_id == vcpu->vcpu_id; |
c5af89b6 | 922 | } |
3e515705 AK |
923 | |
924 | bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu); | |
925 | ||
926 | #else | |
927 | ||
928 | static inline bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu) { return true; } | |
929 | ||
6aa8b732 | 930 | #endif |
bfd99ff5 AK |
931 | |
932 | #ifdef __KVM_HAVE_DEVICE_ASSIGNMENT | |
933 | ||
934 | long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, | |
935 | unsigned long arg); | |
936 | ||
937 | #else | |
938 | ||
939 | static inline long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, | |
940 | unsigned long arg) | |
941 | { | |
942 | return -ENOTTY; | |
943 | } | |
944 | ||
73880c80 | 945 | #endif |
bfd99ff5 | 946 | |
a8eeb04a AK |
947 | static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu) |
948 | { | |
949 | set_bit(req, &vcpu->requests); | |
950 | } | |
951 | ||
a8eeb04a AK |
952 | static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu) |
953 | { | |
0719837c AK |
954 | if (test_bit(req, &vcpu->requests)) { |
955 | clear_bit(req, &vcpu->requests); | |
956 | return true; | |
957 | } else { | |
958 | return false; | |
959 | } | |
a8eeb04a AK |
960 | } |
961 | ||
4c088493 R |
962 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
963 | ||
964 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
965 | { | |
966 | vcpu->spin_loop.in_spin_loop = val; | |
967 | } | |
968 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
969 | { | |
970 | vcpu->spin_loop.dy_eligible = val; | |
971 | } | |
972 | ||
973 | #else /* !CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ | |
974 | ||
975 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
976 | { | |
977 | } | |
978 | ||
979 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
980 | { | |
981 | } | |
982 | ||
06e48c51 R |
983 | static inline bool kvm_vcpu_eligible_for_directed_yield(struct kvm_vcpu *vcpu) |
984 | { | |
985 | return true; | |
986 | } | |
987 | ||
4c088493 | 988 | #endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ |
bfd99ff5 AK |
989 | #endif |
990 |