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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> | |
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> |
c11f11fc | 25 | #include <linux/irqflags.h> |
521921ba | 26 | #include <linux/context_tracking.h> |
e8edc6e0 | 27 | #include <asm/signal.h> |
6aa8b732 | 28 | |
6aa8b732 | 29 | #include <linux/kvm.h> |
102d8325 | 30 | #include <linux/kvm_para.h> |
6aa8b732 | 31 | |
edf88417 | 32 | #include <linux/kvm_types.h> |
d77a39d9 | 33 | |
edf88417 | 34 | #include <asm/kvm_host.h> |
d657a98e | 35 | |
cef4dea0 AK |
36 | #ifndef KVM_MMIO_SIZE |
37 | #define KVM_MMIO_SIZE 8 | |
38 | #endif | |
39 | ||
67b29204 XG |
40 | /* |
41 | * The bit 16 ~ bit 31 of kvm_memory_region::flags are internally used | |
42 | * in kvm, other bits are visible for userspace which are defined in | |
43 | * include/linux/kvm_h. | |
44 | */ | |
45 | #define KVM_MEMSLOT_INVALID (1UL << 16) | |
46 | ||
87da7e66 XG |
47 | /* Two fragments for cross MMIO pages. */ |
48 | #define KVM_MAX_MMIO_FRAGMENTS 2 | |
f78146b0 | 49 | |
9c5b1172 XG |
50 | /* |
51 | * For the normal pfn, the highest 12 bits should be zero, | |
81c52c56 XG |
52 | * so we can mask bit 62 ~ bit 52 to indicate the error pfn, |
53 | * mask bit 63 to indicate the noslot pfn. | |
9c5b1172 | 54 | */ |
81c52c56 XG |
55 | #define KVM_PFN_ERR_MASK (0x7ffULL << 52) |
56 | #define KVM_PFN_ERR_NOSLOT_MASK (0xfffULL << 52) | |
57 | #define KVM_PFN_NOSLOT (0x1ULL << 63) | |
9c5b1172 XG |
58 | |
59 | #define KVM_PFN_ERR_FAULT (KVM_PFN_ERR_MASK) | |
60 | #define KVM_PFN_ERR_HWPOISON (KVM_PFN_ERR_MASK + 1) | |
81c52c56 | 61 | #define KVM_PFN_ERR_RO_FAULT (KVM_PFN_ERR_MASK + 2) |
6c8ee57b | 62 | |
81c52c56 XG |
63 | /* |
64 | * error pfns indicate that the gfn is in slot but faild to | |
65 | * translate it to pfn on host. | |
66 | */ | |
9c5b1172 | 67 | static inline bool is_error_pfn(pfn_t pfn) |
83f09228 | 68 | { |
9c5b1172 | 69 | return !!(pfn & KVM_PFN_ERR_MASK); |
83f09228 XG |
70 | } |
71 | ||
81c52c56 XG |
72 | /* |
73 | * error_noslot pfns indicate that the gfn can not be | |
74 | * translated to pfn - it is not in slot or failed to | |
75 | * translate it to pfn. | |
76 | */ | |
77 | static inline bool is_error_noslot_pfn(pfn_t pfn) | |
83f09228 | 78 | { |
81c52c56 | 79 | return !!(pfn & KVM_PFN_ERR_NOSLOT_MASK); |
83f09228 XG |
80 | } |
81 | ||
81c52c56 XG |
82 | /* noslot pfn indicates that the gfn is not in slot. */ |
83 | static inline bool is_noslot_pfn(pfn_t pfn) | |
83f09228 | 84 | { |
81c52c56 | 85 | return pfn == KVM_PFN_NOSLOT; |
83f09228 XG |
86 | } |
87 | ||
7068d097 XG |
88 | #define KVM_HVA_ERR_BAD (PAGE_OFFSET) |
89 | #define KVM_HVA_ERR_RO_BAD (PAGE_OFFSET + PAGE_SIZE) | |
ca3a490c XG |
90 | |
91 | static inline bool kvm_is_error_hva(unsigned long addr) | |
92 | { | |
7068d097 | 93 | return addr >= PAGE_OFFSET; |
ca3a490c XG |
94 | } |
95 | ||
6cede2e6 XG |
96 | #define KVM_ERR_PTR_BAD_PAGE (ERR_PTR(-ENOENT)) |
97 | ||
9c5b1172 | 98 | static inline bool is_error_page(struct page *page) |
6cede2e6 XG |
99 | { |
100 | return IS_ERR(page); | |
101 | } | |
102 | ||
d9e368d6 AK |
103 | /* |
104 | * vcpu->requests bit members | |
105 | */ | |
3176bc3e | 106 | #define KVM_REQ_TLB_FLUSH 0 |
2f52d58c | 107 | #define KVM_REQ_MIGRATE_TIMER 1 |
b209749f | 108 | #define KVM_REQ_REPORT_TPR_ACCESS 2 |
2e53d63a | 109 | #define KVM_REQ_MMU_RELOAD 3 |
71c4dfaf | 110 | #define KVM_REQ_TRIPLE_FAULT 4 |
06e05645 | 111 | #define KVM_REQ_PENDING_TIMER 5 |
d7690175 | 112 | #define KVM_REQ_UNHALT 6 |
4731d4c7 | 113 | #define KVM_REQ_MMU_SYNC 7 |
34c238a1 | 114 | #define KVM_REQ_CLOCK_UPDATE 8 |
32f88400 | 115 | #define KVM_REQ_KICK 9 |
02daab21 | 116 | #define KVM_REQ_DEACTIVATE_FPU 10 |
3842d135 | 117 | #define KVM_REQ_EVENT 11 |
af585b92 | 118 | #define KVM_REQ_APF_HALT 12 |
c9aaa895 | 119 | #define KVM_REQ_STEAL_UPDATE 13 |
7460fb4a | 120 | #define KVM_REQ_NMI 14 |
730dca42 JK |
121 | #define KVM_REQ_PMU 15 |
122 | #define KVM_REQ_PMI 16 | |
123 | #define KVM_REQ_WATCHDOG 17 | |
124 | #define KVM_REQ_MASTERCLOCK_UPDATE 18 | |
125 | #define KVM_REQ_MCLOCK_INPROGRESS 19 | |
126 | #define KVM_REQ_EPR_EXIT 20 | |
127 | #define KVM_REQ_SCAN_IOAPIC 21 | |
0061d53d | 128 | #define KVM_REQ_GLOBAL_CLOCK_UPDATE 22 |
6aa8b732 | 129 | |
7a84428a AW |
130 | #define KVM_USERSPACE_IRQ_SOURCE_ID 0 |
131 | #define KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID 1 | |
5550af4d | 132 | |
6c474694 | 133 | struct kvm; |
6aa8b732 | 134 | struct kvm_vcpu; |
c16f862d | 135 | extern struct kmem_cache *kvm_vcpu_cache; |
6aa8b732 | 136 | |
fc1b7492 GL |
137 | extern raw_spinlock_t kvm_lock; |
138 | extern struct list_head vm_list; | |
139 | ||
743eeb0b SL |
140 | struct kvm_io_range { |
141 | gpa_t addr; | |
142 | int len; | |
143 | struct kvm_io_device *dev; | |
144 | }; | |
145 | ||
786a9f88 | 146 | #define NR_IOBUS_DEVS 1000 |
a1300716 | 147 | |
2eeb2e94 | 148 | struct kvm_io_bus { |
6ea34c9b AK |
149 | int dev_count; |
150 | int ioeventfd_count; | |
a1300716 | 151 | struct kvm_io_range range[]; |
2eeb2e94 GH |
152 | }; |
153 | ||
e93f8a0f MT |
154 | enum kvm_bus { |
155 | KVM_MMIO_BUS, | |
156 | KVM_PIO_BUS, | |
060f0ce6 | 157 | KVM_VIRTIO_CCW_NOTIFY_BUS, |
e93f8a0f MT |
158 | KVM_NR_BUSES |
159 | }; | |
160 | ||
161 | int kvm_io_bus_write(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, | |
162 | int len, const void *val); | |
126a5af5 CH |
163 | int kvm_io_bus_write_cookie(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, |
164 | int len, const void *val, long cookie); | |
e93f8a0f | 165 | int kvm_io_bus_read(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, int len, |
bda9020e | 166 | void *val); |
126a5af5 CH |
167 | int kvm_io_bus_read_cookie(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, |
168 | int len, void *val, long cookie); | |
743eeb0b SL |
169 | int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, |
170 | int len, struct kvm_io_device *dev); | |
e93f8a0f MT |
171 | int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx, |
172 | struct kvm_io_device *dev); | |
2eeb2e94 | 173 | |
af585b92 GN |
174 | #ifdef CONFIG_KVM_ASYNC_PF |
175 | struct kvm_async_pf { | |
176 | struct work_struct work; | |
177 | struct list_head link; | |
178 | struct list_head queue; | |
179 | struct kvm_vcpu *vcpu; | |
180 | struct mm_struct *mm; | |
181 | gva_t gva; | |
182 | unsigned long addr; | |
183 | struct kvm_arch_async_pf arch; | |
184 | struct page *page; | |
185 | bool done; | |
186 | }; | |
187 | ||
188 | void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu); | |
189 | void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu); | |
190 | int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, gfn_t gfn, | |
191 | struct kvm_arch_async_pf *arch); | |
344d9588 | 192 | int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu); |
af585b92 GN |
193 | #endif |
194 | ||
6b7e2d09 XG |
195 | enum { |
196 | OUTSIDE_GUEST_MODE, | |
197 | IN_GUEST_MODE, | |
c142786c AK |
198 | EXITING_GUEST_MODE, |
199 | READING_SHADOW_PAGE_TABLES, | |
6b7e2d09 XG |
200 | }; |
201 | ||
f78146b0 AK |
202 | /* |
203 | * Sometimes a large or cross-page mmio needs to be broken up into separate | |
204 | * exits for userspace servicing. | |
205 | */ | |
206 | struct kvm_mmio_fragment { | |
207 | gpa_t gpa; | |
208 | void *data; | |
209 | unsigned len; | |
210 | }; | |
211 | ||
d17fbbf7 ZX |
212 | struct kvm_vcpu { |
213 | struct kvm *kvm; | |
31bb117e | 214 | #ifdef CONFIG_PREEMPT_NOTIFIERS |
d17fbbf7 | 215 | struct preempt_notifier preempt_notifier; |
31bb117e | 216 | #endif |
6b7e2d09 | 217 | int cpu; |
d17fbbf7 | 218 | int vcpu_id; |
6b7e2d09 XG |
219 | int srcu_idx; |
220 | int mode; | |
d17fbbf7 | 221 | unsigned long requests; |
d0bfb940 | 222 | unsigned long guest_debug; |
6b7e2d09 XG |
223 | |
224 | struct mutex mutex; | |
225 | struct kvm_run *run; | |
f656ce01 | 226 | |
d17fbbf7 | 227 | int fpu_active; |
2acf923e | 228 | int guest_fpu_loaded, guest_xcr0_loaded; |
d17fbbf7 | 229 | wait_queue_head_t wq; |
34bb10b7 | 230 | struct pid *pid; |
d17fbbf7 ZX |
231 | int sigset_active; |
232 | sigset_t sigset; | |
233 | struct kvm_vcpu_stat stat; | |
234 | ||
34c16eec | 235 | #ifdef CONFIG_HAS_IOMEM |
d17fbbf7 ZX |
236 | int mmio_needed; |
237 | int mmio_read_completed; | |
238 | int mmio_is_write; | |
f78146b0 AK |
239 | int mmio_cur_fragment; |
240 | int mmio_nr_fragments; | |
241 | struct kvm_mmio_fragment mmio_fragments[KVM_MAX_MMIO_FRAGMENTS]; | |
34c16eec | 242 | #endif |
1165f5fe | 243 | |
af585b92 GN |
244 | #ifdef CONFIG_KVM_ASYNC_PF |
245 | struct { | |
246 | u32 queued; | |
247 | struct list_head queue; | |
248 | struct list_head done; | |
249 | spinlock_t lock; | |
250 | } async_pf; | |
251 | #endif | |
252 | ||
4c088493 R |
253 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
254 | /* | |
255 | * Cpu relax intercept or pause loop exit optimization | |
256 | * in_spin_loop: set when a vcpu does a pause loop exit | |
257 | * or cpu relax intercepted. | |
258 | * dy_eligible: indicates whether vcpu is eligible for directed yield. | |
259 | */ | |
260 | struct { | |
261 | bool in_spin_loop; | |
262 | bool dy_eligible; | |
263 | } spin_loop; | |
264 | #endif | |
3a08a8f9 | 265 | bool preempted; |
d657a98e ZX |
266 | struct kvm_vcpu_arch arch; |
267 | }; | |
268 | ||
6b7e2d09 XG |
269 | static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu) |
270 | { | |
271 | return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE); | |
272 | } | |
273 | ||
660c22c4 TY |
274 | /* |
275 | * Some of the bitops functions do not support too long bitmaps. | |
276 | * This number must be determined not to exceed such limits. | |
277 | */ | |
278 | #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1) | |
279 | ||
6aa8b732 AK |
280 | struct kvm_memory_slot { |
281 | gfn_t base_gfn; | |
282 | unsigned long npages; | |
6aa8b732 | 283 | unsigned long *dirty_bitmap; |
db3fe4eb | 284 | struct kvm_arch_memory_slot arch; |
8a7ae055 | 285 | unsigned long userspace_addr; |
6104f472 | 286 | u32 flags; |
1e702d9a | 287 | short id; |
6aa8b732 AK |
288 | }; |
289 | ||
87bf6e7d TY |
290 | static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot) |
291 | { | |
292 | return ALIGN(memslot->npages, BITS_PER_LONG) / 8; | |
293 | } | |
294 | ||
399ec807 AK |
295 | struct kvm_kernel_irq_routing_entry { |
296 | u32 gsi; | |
5116d8f6 | 297 | u32 type; |
4925663a | 298 | int (*set)(struct kvm_kernel_irq_routing_entry *e, |
aa2fbe6d YZ |
299 | struct kvm *kvm, int irq_source_id, int level, |
300 | bool line_status); | |
399ec807 AK |
301 | union { |
302 | struct { | |
303 | unsigned irqchip; | |
304 | unsigned pin; | |
305 | } irqchip; | |
79950e10 | 306 | struct msi_msg msi; |
399ec807 | 307 | }; |
46e624b9 GN |
308 | struct hlist_node link; |
309 | }; | |
310 | ||
a725d56a | 311 | #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING |
3e71f88b | 312 | |
46e624b9 | 313 | struct kvm_irq_routing_table { |
8175e5b7 | 314 | int chip[KVM_NR_IRQCHIPS][KVM_IRQCHIP_NUM_PINS]; |
46e624b9 GN |
315 | struct kvm_kernel_irq_routing_entry *rt_entries; |
316 | u32 nr_rt_entries; | |
317 | /* | |
318 | * Array indexed by gsi. Each entry contains list of irq chips | |
319 | * the gsi is connected to. | |
320 | */ | |
321 | struct hlist_head map[0]; | |
399ec807 AK |
322 | }; |
323 | ||
3e71f88b GN |
324 | #else |
325 | ||
326 | struct kvm_irq_routing_table {}; | |
327 | ||
328 | #endif | |
329 | ||
0743247f AW |
330 | #ifndef KVM_PRIVATE_MEM_SLOTS |
331 | #define KVM_PRIVATE_MEM_SLOTS 0 | |
332 | #endif | |
333 | ||
93a5cef0 | 334 | #ifndef KVM_MEM_SLOTS_NUM |
bbacc0c1 | 335 | #define KVM_MEM_SLOTS_NUM (KVM_USER_MEM_SLOTS + KVM_PRIVATE_MEM_SLOTS) |
93a5cef0 XG |
336 | #endif |
337 | ||
bf3e05bc XG |
338 | /* |
339 | * Note: | |
340 | * memslots are not sorted by id anymore, please use id_to_memslot() | |
341 | * to get the memslot by its id. | |
342 | */ | |
46a26bf5 | 343 | struct kvm_memslots { |
49c7754c | 344 | u64 generation; |
93a5cef0 | 345 | struct kvm_memory_slot memslots[KVM_MEM_SLOTS_NUM]; |
f85e2cb5 | 346 | /* The mapping table from slot id to the index in memslots[]. */ |
1e702d9a | 347 | short id_to_index[KVM_MEM_SLOTS_NUM]; |
46a26bf5 MT |
348 | }; |
349 | ||
6aa8b732 | 350 | struct kvm { |
aaee2c94 | 351 | spinlock_t mmu_lock; |
79fac95e | 352 | struct mutex slots_lock; |
6d4e4c4f | 353 | struct mm_struct *mm; /* userspace tied to this vm */ |
46a26bf5 | 354 | struct kvm_memslots *memslots; |
bc6678a3 | 355 | struct srcu_struct srcu; |
73880c80 GN |
356 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
357 | u32 bsp_vcpu_id; | |
73880c80 | 358 | #endif |
fb3f0f51 | 359 | struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; |
73880c80 | 360 | atomic_t online_vcpus; |
217ece61 | 361 | int last_boosted_vcpu; |
133de902 | 362 | struct list_head vm_list; |
60eead79 | 363 | struct mutex lock; |
e93f8a0f | 364 | struct kvm_io_bus *buses[KVM_NR_BUSES]; |
721eecbf GH |
365 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
366 | struct { | |
367 | spinlock_t lock; | |
368 | struct list_head items; | |
7a84428a AW |
369 | struct list_head resampler_list; |
370 | struct mutex resampler_lock; | |
721eecbf | 371 | } irqfds; |
d34e6b17 | 372 | struct list_head ioeventfds; |
721eecbf | 373 | #endif |
ba1389b7 | 374 | struct kvm_vm_stat stat; |
d69fb81f | 375 | struct kvm_arch arch; |
d39f13b0 | 376 | atomic_t users_count; |
5f94c174 | 377 | #ifdef KVM_COALESCED_MMIO_PAGE_OFFSET |
5f94c174 | 378 | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; |
2b3c246a SL |
379 | spinlock_t ring_lock; |
380 | struct list_head coalesced_zones; | |
5f94c174 | 381 | #endif |
e930bffe | 382 | |
60eead79 | 383 | struct mutex irq_lock; |
75858a84 | 384 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 MT |
385 | /* |
386 | * Update side is protected by irq_lock and, | |
387 | * if configured, irqfds.lock. | |
388 | */ | |
4b6a2872 | 389 | struct kvm_irq_routing_table __rcu *irq_routing; |
75858a84 | 390 | struct hlist_head mask_notifier_list; |
136bdfee | 391 | struct hlist_head irq_ack_notifier_list; |
75858a84 AK |
392 | #endif |
393 | ||
36c1ed82 | 394 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
e930bffe AA |
395 | struct mmu_notifier mmu_notifier; |
396 | unsigned long mmu_notifier_seq; | |
397 | long mmu_notifier_count; | |
398 | #endif | |
5c663a15 | 399 | long tlbs_dirty; |
07f0a7bd | 400 | struct list_head devices; |
6aa8b732 AK |
401 | }; |
402 | ||
a737f256 CD |
403 | #define kvm_err(fmt, ...) \ |
404 | pr_err("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
405 | #define kvm_info(fmt, ...) \ | |
406 | pr_info("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
407 | #define kvm_debug(fmt, ...) \ | |
408 | pr_debug("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
409 | #define kvm_pr_unimpl(fmt, ...) \ | |
410 | pr_err_ratelimited("kvm [%i]: " fmt, \ | |
411 | task_tgid_nr(current), ## __VA_ARGS__) | |
f0242478 | 412 | |
a737f256 CD |
413 | /* The guest did something we don't support. */ |
414 | #define vcpu_unimpl(vcpu, fmt, ...) \ | |
415 | kvm_pr_unimpl("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__) | |
6aa8b732 | 416 | |
988a2cae GN |
417 | static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i) |
418 | { | |
419 | smp_rmb(); | |
420 | return kvm->vcpus[i]; | |
421 | } | |
422 | ||
423 | #define kvm_for_each_vcpu(idx, vcpup, kvm) \ | |
b42fc3cb JM |
424 | for (idx = 0; \ |
425 | idx < atomic_read(&kvm->online_vcpus) && \ | |
426 | (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \ | |
427 | idx++) | |
988a2cae | 428 | |
be6ba0f0 XG |
429 | #define kvm_for_each_memslot(memslot, slots) \ |
430 | for (memslot = &slots->memslots[0]; \ | |
bf3e05bc XG |
431 | memslot < slots->memslots + KVM_MEM_SLOTS_NUM && memslot->npages;\ |
432 | memslot++) | |
be6ba0f0 | 433 | |
fb3f0f51 RR |
434 | int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id); |
435 | void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); | |
436 | ||
9fc77441 | 437 | int __must_check vcpu_load(struct kvm_vcpu *vcpu); |
313a3dc7 CO |
438 | void vcpu_put(struct kvm_vcpu *vcpu); |
439 | ||
a725d56a | 440 | #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING |
a0f155e9 CH |
441 | int kvm_irqfd_init(void); |
442 | void kvm_irqfd_exit(void); | |
443 | #else | |
444 | static inline int kvm_irqfd_init(void) | |
445 | { | |
446 | return 0; | |
447 | } | |
448 | ||
449 | static inline void kvm_irqfd_exit(void) | |
450 | { | |
451 | } | |
452 | #endif | |
0ee75bea | 453 | int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, |
c16f862d | 454 | struct module *module); |
cb498ea2 | 455 | void kvm_exit(void); |
6aa8b732 | 456 | |
d39f13b0 IE |
457 | void kvm_get_kvm(struct kvm *kvm); |
458 | void kvm_put_kvm(struct kvm *kvm); | |
116c14c0 AW |
459 | void update_memslots(struct kvm_memslots *slots, struct kvm_memory_slot *new, |
460 | u64 last_generation); | |
d39f13b0 | 461 | |
90d83dc3 LJ |
462 | static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm) |
463 | { | |
464 | return rcu_dereference_check(kvm->memslots, | |
465 | srcu_read_lock_held(&kvm->srcu) | |
466 | || lockdep_is_held(&kvm->slots_lock)); | |
467 | } | |
468 | ||
28a37544 XG |
469 | static inline struct kvm_memory_slot * |
470 | id_to_memslot(struct kvm_memslots *slots, int id) | |
471 | { | |
f85e2cb5 XG |
472 | int index = slots->id_to_index[id]; |
473 | struct kvm_memory_slot *slot; | |
bf3e05bc | 474 | |
f85e2cb5 | 475 | slot = &slots->memslots[index]; |
bf3e05bc | 476 | |
f85e2cb5 XG |
477 | WARN_ON(slot->id != id); |
478 | return slot; | |
28a37544 XG |
479 | } |
480 | ||
74d0727c TY |
481 | /* |
482 | * KVM_SET_USER_MEMORY_REGION ioctl allows the following operations: | |
483 | * - create a new memory slot | |
484 | * - delete an existing memory slot | |
485 | * - modify an existing memory slot | |
486 | * -- move it in the guest physical memory space | |
487 | * -- just change its flags | |
488 | * | |
489 | * Since flags can be changed by some of these operations, the following | |
490 | * differentiation is the best we can do for __kvm_set_memory_region(): | |
491 | */ | |
492 | enum kvm_mr_change { | |
493 | KVM_MR_CREATE, | |
494 | KVM_MR_DELETE, | |
495 | KVM_MR_MOVE, | |
496 | KVM_MR_FLAGS_ONLY, | |
497 | }; | |
498 | ||
210c7c4d | 499 | int kvm_set_memory_region(struct kvm *kvm, |
47ae31e2 | 500 | struct kvm_userspace_memory_region *mem); |
f78e0e2e | 501 | int __kvm_set_memory_region(struct kvm *kvm, |
47ae31e2 | 502 | struct kvm_userspace_memory_region *mem); |
db3fe4eb TY |
503 | void kvm_arch_free_memslot(struct kvm_memory_slot *free, |
504 | struct kvm_memory_slot *dont); | |
505 | int kvm_arch_create_memslot(struct kvm_memory_slot *slot, unsigned long npages); | |
e59dbe09 | 506 | void kvm_arch_memslots_updated(struct kvm *kvm); |
f7784b8e MT |
507 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
508 | struct kvm_memory_slot *memslot, | |
f7784b8e | 509 | struct kvm_userspace_memory_region *mem, |
7b6195a9 | 510 | enum kvm_mr_change change); |
f7784b8e | 511 | void kvm_arch_commit_memory_region(struct kvm *kvm, |
0de10343 | 512 | struct kvm_userspace_memory_region *mem, |
8482644a TY |
513 | const struct kvm_memory_slot *old, |
514 | enum kvm_mr_change change); | |
db3fe4eb | 515 | bool kvm_largepages_enabled(void); |
54dee993 | 516 | void kvm_disable_largepages(void); |
2df72e9b MT |
517 | /* flush all memory translations */ |
518 | void kvm_arch_flush_shadow_all(struct kvm *kvm); | |
519 | /* flush memory translations pointing to 'slot' */ | |
520 | void kvm_arch_flush_shadow_memslot(struct kvm *kvm, | |
521 | struct kvm_memory_slot *slot); | |
a983fb23 | 522 | |
48987781 XG |
523 | int gfn_to_page_many_atomic(struct kvm *kvm, gfn_t gfn, struct page **pages, |
524 | int nr_pages); | |
525 | ||
954bbbc2 | 526 | struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); |
05da4558 | 527 | unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn); |
4d8b81ab | 528 | unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
b4231d61 IE |
529 | void kvm_release_page_clean(struct page *page); |
530 | void kvm_release_page_dirty(struct page *page); | |
35149e21 AL |
531 | void kvm_set_page_dirty(struct page *page); |
532 | void kvm_set_page_accessed(struct page *page); | |
533 | ||
365fb3fd | 534 | pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn); |
612819c3 MT |
535 | pfn_t gfn_to_pfn_async(struct kvm *kvm, gfn_t gfn, bool *async, |
536 | bool write_fault, bool *writable); | |
35149e21 | 537 | pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn); |
612819c3 MT |
538 | pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault, |
539 | bool *writable); | |
d5661048 | 540 | pfn_t gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
037d92dc XG |
541 | pfn_t gfn_to_pfn_memslot_atomic(struct kvm_memory_slot *slot, gfn_t gfn); |
542 | ||
32cad84f | 543 | void kvm_release_pfn_dirty(pfn_t pfn); |
35149e21 AL |
544 | void kvm_release_pfn_clean(pfn_t pfn); |
545 | void kvm_set_pfn_dirty(pfn_t pfn); | |
546 | void kvm_set_pfn_accessed(pfn_t pfn); | |
547 | void kvm_get_pfn(pfn_t pfn); | |
548 | ||
195aefde IE |
549 | int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, |
550 | int len); | |
7ec54588 MT |
551 | int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data, |
552 | unsigned long len); | |
195aefde | 553 | int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); |
e03b644f GN |
554 | int kvm_read_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
555 | void *data, unsigned long len); | |
195aefde IE |
556 | int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, |
557 | int offset, int len); | |
558 | int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, | |
559 | unsigned long len); | |
49c7754c GN |
560 | int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
561 | void *data, unsigned long len); | |
562 | int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc, | |
8f964525 | 563 | gpa_t gpa, unsigned long len); |
195aefde IE |
564 | int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); |
565 | int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); | |
6aa8b732 | 566 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); |
e0d62c7f | 567 | int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); |
8f0b1ab6 | 568 | unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn); |
6aa8b732 | 569 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); |
49c7754c GN |
570 | void mark_page_dirty_in_slot(struct kvm *kvm, struct kvm_memory_slot *memslot, |
571 | gfn_t gfn); | |
6aa8b732 | 572 | |
8776e519 | 573 | void kvm_vcpu_block(struct kvm_vcpu *vcpu); |
b6d33834 | 574 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
41628d33 | 575 | bool kvm_vcpu_yield_to(struct kvm_vcpu *target); |
d255f4f2 | 576 | void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu); |
6aa8b732 | 577 | void kvm_resched(struct kvm_vcpu *vcpu); |
7702fd1f AK |
578 | void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); |
579 | void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); | |
a4ee1ca4 | 580 | |
d9e368d6 | 581 | void kvm_flush_remote_tlbs(struct kvm *kvm); |
2e53d63a | 582 | void kvm_reload_remote_mmus(struct kvm *kvm); |
d828199e | 583 | void kvm_make_mclock_inprogress_request(struct kvm *kvm); |
3d81bc7e | 584 | void kvm_make_scan_ioapic_request(struct kvm *kvm); |
6aa8b732 | 585 | |
043405e1 CO |
586 | long kvm_arch_dev_ioctl(struct file *filp, |
587 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 CO |
588 | long kvm_arch_vcpu_ioctl(struct file *filp, |
589 | unsigned int ioctl, unsigned long arg); | |
5b1c1493 | 590 | int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf); |
018d00d2 ZX |
591 | |
592 | int kvm_dev_ioctl_check_extension(long ext); | |
593 | ||
5bb064dc ZX |
594 | int kvm_get_dirty_log(struct kvm *kvm, |
595 | struct kvm_dirty_log *log, int *is_dirty); | |
596 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, | |
597 | struct kvm_dirty_log *log); | |
598 | ||
1fe779f8 | 599 | int kvm_vm_ioctl_set_memory_region(struct kvm *kvm, |
47ae31e2 | 600 | struct kvm_userspace_memory_region *mem); |
aa2fbe6d YZ |
601 | int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_level, |
602 | bool line_status); | |
1fe779f8 CO |
603 | long kvm_arch_vm_ioctl(struct file *filp, |
604 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 | 605 | |
d0752060 HB |
606 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); |
607 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); | |
608 | ||
8b006791 ZX |
609 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, |
610 | struct kvm_translation *tr); | |
611 | ||
b6c7a5dc HB |
612 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); |
613 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); | |
614 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
615 | struct kvm_sregs *sregs); | |
616 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
617 | struct kvm_sregs *sregs); | |
62d9f0db MT |
618 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
619 | struct kvm_mp_state *mp_state); | |
620 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
621 | struct kvm_mp_state *mp_state); | |
d0bfb940 JK |
622 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
623 | struct kvm_guest_debug *dbg); | |
b6c7a5dc HB |
624 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); |
625 | ||
f8c16bba ZX |
626 | int kvm_arch_init(void *opaque); |
627 | void kvm_arch_exit(void); | |
043405e1 | 628 | |
e9b11c17 ZX |
629 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); |
630 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu); | |
631 | ||
632 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu); | |
633 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
634 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); | |
635 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); | |
26e5215f | 636 | int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu); |
42897d86 | 637 | int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu); |
d40ccc62 | 638 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu); |
e9b11c17 | 639 | |
10474ae8 | 640 | int kvm_arch_hardware_enable(void *garbage); |
e9b11c17 ZX |
641 | void kvm_arch_hardware_disable(void *garbage); |
642 | int kvm_arch_hardware_setup(void); | |
643 | void kvm_arch_hardware_unsetup(void); | |
644 | void kvm_arch_check_processor_compat(void *rtn); | |
1d737c8a | 645 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu); |
b6d33834 | 646 | int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu); |
e9b11c17 | 647 | |
d19a9cd2 ZX |
648 | void kvm_free_physmem(struct kvm *kvm); |
649 | ||
c1a7b32a TY |
650 | void *kvm_kvzalloc(unsigned long size); |
651 | void kvm_kvfree(const void *addr); | |
652 | ||
d89f5eff JK |
653 | #ifndef __KVM_HAVE_ARCH_VM_ALLOC |
654 | static inline struct kvm *kvm_arch_alloc_vm(void) | |
655 | { | |
656 | return kzalloc(sizeof(struct kvm), GFP_KERNEL); | |
657 | } | |
658 | ||
659 | static inline void kvm_arch_free_vm(struct kvm *kvm) | |
660 | { | |
661 | kfree(kvm); | |
662 | } | |
663 | #endif | |
664 | ||
b6d33834 CD |
665 | static inline wait_queue_head_t *kvm_arch_vcpu_wq(struct kvm_vcpu *vcpu) |
666 | { | |
2246f8b5 AG |
667 | #ifdef __KVM_HAVE_ARCH_WQP |
668 | return vcpu->arch.wqp; | |
669 | #else | |
b6d33834 | 670 | return &vcpu->wq; |
b6d33834 | 671 | #endif |
2246f8b5 | 672 | } |
b6d33834 | 673 | |
e08b9637 | 674 | int kvm_arch_init_vm(struct kvm *kvm, unsigned long type); |
d19a9cd2 | 675 | void kvm_arch_destroy_vm(struct kvm *kvm); |
ad8ba2cd | 676 | void kvm_arch_sync_events(struct kvm *kvm); |
e9b11c17 | 677 | |
3d80840d | 678 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu); |
5736199a | 679 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
682c59a3 | 680 | |
a2766325 | 681 | bool kvm_is_mmio_pfn(pfn_t pfn); |
c77fb9dc | 682 | |
62c476c7 BAY |
683 | struct kvm_irq_ack_notifier { |
684 | struct hlist_node link; | |
685 | unsigned gsi; | |
686 | void (*irq_acked)(struct kvm_irq_ack_notifier *kian); | |
687 | }; | |
688 | ||
689 | struct kvm_assigned_dev_kernel { | |
690 | struct kvm_irq_ack_notifier ack_notifier; | |
62c476c7 BAY |
691 | struct list_head list; |
692 | int assigned_dev_id; | |
ab9f4ecb | 693 | int host_segnr; |
62c476c7 BAY |
694 | int host_busnr; |
695 | int host_devfn; | |
c1e01514 | 696 | unsigned int entries_nr; |
62c476c7 | 697 | int host_irq; |
defaf158 | 698 | bool host_irq_disabled; |
07700a94 | 699 | bool pci_2_3; |
c1e01514 | 700 | struct msix_entry *host_msix_entries; |
62c476c7 | 701 | int guest_irq; |
0645211c | 702 | struct msix_entry *guest_msix_entries; |
4f906c19 | 703 | unsigned long irq_requested_type; |
5550af4d | 704 | int irq_source_id; |
b653574a | 705 | int flags; |
62c476c7 BAY |
706 | struct pci_dev *dev; |
707 | struct kvm *kvm; | |
0645211c | 708 | spinlock_t intx_lock; |
cf9eeac4 | 709 | spinlock_t intx_mask_lock; |
1e001d49 | 710 | char irq_name[32]; |
f8fcfd77 | 711 | struct pci_saved_state *pci_saved_state; |
62c476c7 | 712 | }; |
75858a84 AK |
713 | |
714 | struct kvm_irq_mask_notifier { | |
715 | void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked); | |
716 | int irq; | |
717 | struct hlist_node link; | |
718 | }; | |
719 | ||
720 | void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq, | |
721 | struct kvm_irq_mask_notifier *kimn); | |
722 | void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq, | |
723 | struct kvm_irq_mask_notifier *kimn); | |
4a994358 GN |
724 | void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin, |
725 | bool mask); | |
75858a84 | 726 | |
aa2fbe6d YZ |
727 | int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level, |
728 | bool line_status); | |
01f21880 | 729 | int kvm_set_irq_inatomic(struct kvm *kvm, int irq_source_id, u32 irq, int level); |
bd2b53b2 | 730 | int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm, |
aa2fbe6d | 731 | int irq_source_id, int level, bool line_status); |
c7c9c56c | 732 | bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin); |
44882eed | 733 | void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin); |
3de42dc0 XZ |
734 | void kvm_register_irq_ack_notifier(struct kvm *kvm, |
735 | struct kvm_irq_ack_notifier *kian); | |
fa40a821 MT |
736 | void kvm_unregister_irq_ack_notifier(struct kvm *kvm, |
737 | struct kvm_irq_ack_notifier *kian); | |
5550af4d SY |
738 | int kvm_request_irq_source_id(struct kvm *kvm); |
739 | void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id); | |
62c476c7 | 740 | |
522c68c4 SY |
741 | /* For vcpu->arch.iommu_flags */ |
742 | #define KVM_IOMMU_CACHE_COHERENCY 0x1 | |
743 | ||
2a5bab10 | 744 | #ifdef CONFIG_KVM_DEVICE_ASSIGNMENT |
3ad26d81 | 745 | int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
32f6daad | 746 | void kvm_iommu_unmap_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
260782bc | 747 | int kvm_iommu_map_guest(struct kvm *kvm); |
62c476c7 | 748 | int kvm_iommu_unmap_guest(struct kvm *kvm); |
260782bc WH |
749 | int kvm_assign_device(struct kvm *kvm, |
750 | struct kvm_assigned_dev_kernel *assigned_dev); | |
0a920356 WH |
751 | int kvm_deassign_device(struct kvm *kvm, |
752 | struct kvm_assigned_dev_kernel *assigned_dev); | |
2a5bab10 | 753 | #else |
62c476c7 | 754 | static inline int kvm_iommu_map_pages(struct kvm *kvm, |
d7a79b6c | 755 | struct kvm_memory_slot *slot) |
62c476c7 BAY |
756 | { |
757 | return 0; | |
758 | } | |
759 | ||
32f6daad AW |
760 | static inline void kvm_iommu_unmap_pages(struct kvm *kvm, |
761 | struct kvm_memory_slot *slot) | |
762 | { | |
763 | } | |
764 | ||
62c476c7 BAY |
765 | static inline int kvm_iommu_unmap_guest(struct kvm *kvm) |
766 | { | |
767 | return 0; | |
768 | } | |
2a5bab10 | 769 | #endif |
62c476c7 | 770 | |
c11f11fc FW |
771 | static inline void kvm_guest_enter(void) |
772 | { | |
773 | unsigned long flags; | |
774 | ||
775 | BUG_ON(preemptible()); | |
776 | ||
777 | local_irq_save(flags); | |
778 | guest_enter(); | |
779 | local_irq_restore(flags); | |
780 | ||
8fa22068 GN |
781 | /* KVM does not hold any references to rcu protected data when it |
782 | * switches CPU into a guest mode. In fact switching to a guest mode | |
783 | * is very similar to exiting to userspase from rcu point of view. In | |
784 | * addition CPU may stay in a guest mode for quite a long time (up to | |
785 | * one time slice). Lets treat guest mode as quiescent state, just like | |
786 | * we do with user-mode execution. | |
787 | */ | |
788 | rcu_virt_note_context_switch(smp_processor_id()); | |
d172fcd3 LV |
789 | } |
790 | ||
791 | static inline void kvm_guest_exit(void) | |
792 | { | |
c11f11fc FW |
793 | unsigned long flags; |
794 | ||
795 | local_irq_save(flags); | |
796 | guest_exit(); | |
797 | local_irq_restore(flags); | |
d172fcd3 LV |
798 | } |
799 | ||
9d4cba7f PM |
800 | /* |
801 | * search_memslots() and __gfn_to_memslot() are here because they are | |
802 | * used in non-modular code in arch/powerpc/kvm/book3s_hv_rm_mmu.c. | |
803 | * gfn_to_memslot() itself isn't here as an inline because that would | |
804 | * bloat other code too much. | |
805 | */ | |
806 | static inline struct kvm_memory_slot * | |
807 | search_memslots(struct kvm_memslots *slots, gfn_t gfn) | |
808 | { | |
809 | struct kvm_memory_slot *memslot; | |
810 | ||
811 | kvm_for_each_memslot(memslot, slots) | |
812 | if (gfn >= memslot->base_gfn && | |
813 | gfn < memslot->base_gfn + memslot->npages) | |
814 | return memslot; | |
815 | ||
816 | return NULL; | |
817 | } | |
818 | ||
819 | static inline struct kvm_memory_slot * | |
820 | __gfn_to_memslot(struct kvm_memslots *slots, gfn_t gfn) | |
821 | { | |
822 | return search_memslots(slots, gfn); | |
823 | } | |
824 | ||
66a03505 GS |
825 | static inline unsigned long |
826 | __gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn) | |
827 | { | |
828 | return slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE; | |
829 | } | |
830 | ||
0ee8dcb8 XG |
831 | static inline int memslot_id(struct kvm *kvm, gfn_t gfn) |
832 | { | |
833 | return gfn_to_memslot(kvm, gfn)->id; | |
834 | } | |
835 | ||
fb03cb6f TY |
836 | static inline gfn_t gfn_to_index(gfn_t gfn, gfn_t base_gfn, int level) |
837 | { | |
838 | /* KVM_HPAGE_GFN_SHIFT(PT_PAGE_TABLE_LEVEL) must be 0. */ | |
839 | return (gfn >> KVM_HPAGE_GFN_SHIFT(level)) - | |
840 | (base_gfn >> KVM_HPAGE_GFN_SHIFT(level)); | |
841 | } | |
842 | ||
d19a748b TY |
843 | static inline gfn_t |
844 | hva_to_gfn_memslot(unsigned long hva, struct kvm_memory_slot *slot) | |
887c08ac | 845 | { |
d19a748b TY |
846 | gfn_t gfn_offset = (hva - slot->userspace_addr) >> PAGE_SHIFT; |
847 | ||
848 | return slot->base_gfn + gfn_offset; | |
887c08ac XG |
849 | } |
850 | ||
1755fbcc AK |
851 | static inline gpa_t gfn_to_gpa(gfn_t gfn) |
852 | { | |
853 | return (gpa_t)gfn << PAGE_SHIFT; | |
854 | } | |
6aa8b732 | 855 | |
c30a358d JR |
856 | static inline gfn_t gpa_to_gfn(gpa_t gpa) |
857 | { | |
858 | return (gfn_t)(gpa >> PAGE_SHIFT); | |
859 | } | |
860 | ||
62c476c7 BAY |
861 | static inline hpa_t pfn_to_hpa(pfn_t pfn) |
862 | { | |
863 | return (hpa_t)pfn << PAGE_SHIFT; | |
864 | } | |
865 | ||
2f599714 | 866 | static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu) |
2f52d58c AK |
867 | { |
868 | set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests); | |
869 | } | |
870 | ||
ba1389b7 AK |
871 | enum kvm_stat_kind { |
872 | KVM_STAT_VM, | |
873 | KVM_STAT_VCPU, | |
874 | }; | |
875 | ||
417bc304 HB |
876 | struct kvm_stats_debugfs_item { |
877 | const char *name; | |
878 | int offset; | |
ba1389b7 | 879 | enum kvm_stat_kind kind; |
417bc304 HB |
880 | struct dentry *dentry; |
881 | }; | |
882 | extern struct kvm_stats_debugfs_item debugfs_entries[]; | |
76f7c879 | 883 | extern struct dentry *kvm_debugfs_dir; |
d4c9ff2d | 884 | |
36c1ed82 | 885 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
8ca40a70 | 886 | static inline int mmu_notifier_retry(struct kvm *kvm, unsigned long mmu_seq) |
e930bffe | 887 | { |
8ca40a70 | 888 | if (unlikely(kvm->mmu_notifier_count)) |
e930bffe AA |
889 | return 1; |
890 | /* | |
a355aa54 PM |
891 | * Ensure the read of mmu_notifier_count happens before the read |
892 | * of mmu_notifier_seq. This interacts with the smp_wmb() in | |
893 | * mmu_notifier_invalidate_range_end to make sure that the caller | |
894 | * either sees the old (non-zero) value of mmu_notifier_count or | |
895 | * the new (incremented) value of mmu_notifier_seq. | |
896 | * PowerPC Book3s HV KVM calls this under a per-page lock | |
897 | * rather than under kvm->mmu_lock, for scalability, so | |
898 | * can't rely on kvm->mmu_lock to keep things ordered. | |
e930bffe | 899 | */ |
a355aa54 | 900 | smp_rmb(); |
8ca40a70 | 901 | if (kvm->mmu_notifier_seq != mmu_seq) |
e930bffe AA |
902 | return 1; |
903 | return 0; | |
904 | } | |
905 | #endif | |
906 | ||
a725d56a | 907 | #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING |
399ec807 AK |
908 | |
909 | #define KVM_MAX_IRQ_ROUTES 1024 | |
910 | ||
911 | int kvm_setup_default_irq_routing(struct kvm *kvm); | |
912 | int kvm_set_irq_routing(struct kvm *kvm, | |
913 | const struct kvm_irq_routing_entry *entries, | |
914 | unsigned nr, | |
915 | unsigned flags); | |
e8cde093 AG |
916 | int kvm_set_routing_entry(struct kvm_irq_routing_table *rt, |
917 | struct kvm_kernel_irq_routing_entry *e, | |
918 | const struct kvm_irq_routing_entry *ue); | |
399ec807 AK |
919 | void kvm_free_irq_routing(struct kvm *kvm); |
920 | ||
07975ad3 JK |
921 | int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi); |
922 | ||
399ec807 AK |
923 | #else |
924 | ||
925 | static inline void kvm_free_irq_routing(struct kvm *kvm) {} | |
926 | ||
927 | #endif | |
928 | ||
721eecbf GH |
929 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
930 | ||
d34e6b17 | 931 | void kvm_eventfd_init(struct kvm *kvm); |
914daba8 AG |
932 | int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args); |
933 | ||
934 | #ifdef CONFIG_HAVE_KVM_IRQCHIP | |
d4db2935 | 935 | int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args); |
721eecbf | 936 | void kvm_irqfd_release(struct kvm *kvm); |
bd2b53b2 | 937 | void kvm_irq_routing_update(struct kvm *, struct kvm_irq_routing_table *); |
914daba8 AG |
938 | #else |
939 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) | |
940 | { | |
941 | return -EINVAL; | |
942 | } | |
943 | ||
944 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
945 | #endif | |
721eecbf GH |
946 | |
947 | #else | |
948 | ||
d34e6b17 | 949 | static inline void kvm_eventfd_init(struct kvm *kvm) {} |
bd2b53b2 | 950 | |
d4db2935 | 951 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) |
721eecbf GH |
952 | { |
953 | return -EINVAL; | |
954 | } | |
955 | ||
956 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
bd2b53b2 | 957 | |
27923eb1 | 958 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 MT |
959 | static inline void kvm_irq_routing_update(struct kvm *kvm, |
960 | struct kvm_irq_routing_table *irq_rt) | |
961 | { | |
962 | rcu_assign_pointer(kvm->irq_routing, irq_rt); | |
963 | } | |
27923eb1 | 964 | #endif |
bd2b53b2 | 965 | |
d34e6b17 GH |
966 | static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) |
967 | { | |
968 | return -ENOSYS; | |
969 | } | |
721eecbf GH |
970 | |
971 | #endif /* CONFIG_HAVE_KVM_EVENTFD */ | |
972 | ||
73880c80 | 973 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
c5af89b6 GN |
974 | static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu) |
975 | { | |
d3efc8ef | 976 | return vcpu->kvm->bsp_vcpu_id == vcpu->vcpu_id; |
c5af89b6 | 977 | } |
3e515705 AK |
978 | |
979 | bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu); | |
980 | ||
981 | #else | |
982 | ||
983 | static inline bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu) { return true; } | |
984 | ||
6aa8b732 | 985 | #endif |
bfd99ff5 | 986 | |
2a5bab10 | 987 | #ifdef CONFIG_KVM_DEVICE_ASSIGNMENT |
bfd99ff5 AK |
988 | |
989 | long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, | |
990 | unsigned long arg); | |
991 | ||
2a5bab10 AW |
992 | void kvm_free_all_assigned_devices(struct kvm *kvm); |
993 | ||
bfd99ff5 AK |
994 | #else |
995 | ||
996 | static inline long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, | |
997 | unsigned long arg) | |
998 | { | |
999 | return -ENOTTY; | |
1000 | } | |
1001 | ||
2a5bab10 AW |
1002 | static inline void kvm_free_all_assigned_devices(struct kvm *kvm) {} |
1003 | ||
73880c80 | 1004 | #endif |
bfd99ff5 | 1005 | |
a8eeb04a AK |
1006 | static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu) |
1007 | { | |
1008 | set_bit(req, &vcpu->requests); | |
1009 | } | |
1010 | ||
a8eeb04a AK |
1011 | static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu) |
1012 | { | |
0719837c AK |
1013 | if (test_bit(req, &vcpu->requests)) { |
1014 | clear_bit(req, &vcpu->requests); | |
1015 | return true; | |
1016 | } else { | |
1017 | return false; | |
1018 | } | |
a8eeb04a AK |
1019 | } |
1020 | ||
8b415dcd GL |
1021 | extern bool kvm_rebooting; |
1022 | ||
852b6d57 SW |
1023 | struct kvm_device_ops; |
1024 | ||
1025 | struct kvm_device { | |
1026 | struct kvm_device_ops *ops; | |
1027 | struct kvm *kvm; | |
852b6d57 | 1028 | void *private; |
07f0a7bd | 1029 | struct list_head vm_node; |
852b6d57 SW |
1030 | }; |
1031 | ||
1032 | /* create, destroy, and name are mandatory */ | |
1033 | struct kvm_device_ops { | |
1034 | const char *name; | |
1035 | int (*create)(struct kvm_device *dev, u32 type); | |
1036 | ||
1037 | /* | |
1038 | * Destroy is responsible for freeing dev. | |
1039 | * | |
1040 | * Destroy may be called before or after destructors are called | |
1041 | * on emulated I/O regions, depending on whether a reference is | |
1042 | * held by a vcpu or other kvm component that gets destroyed | |
1043 | * after the emulated I/O. | |
1044 | */ | |
1045 | void (*destroy)(struct kvm_device *dev); | |
1046 | ||
1047 | int (*set_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1048 | int (*get_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1049 | int (*has_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1050 | long (*ioctl)(struct kvm_device *dev, unsigned int ioctl, | |
1051 | unsigned long arg); | |
1052 | }; | |
1053 | ||
1054 | void kvm_device_get(struct kvm_device *dev); | |
1055 | void kvm_device_put(struct kvm_device *dev); | |
1056 | struct kvm_device *kvm_device_from_filp(struct file *filp); | |
1057 | ||
5df554ad | 1058 | extern struct kvm_device_ops kvm_mpic_ops; |
5975a2e0 | 1059 | extern struct kvm_device_ops kvm_xics_ops; |
5df554ad | 1060 | |
4c088493 R |
1061 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
1062 | ||
1063 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
1064 | { | |
1065 | vcpu->spin_loop.in_spin_loop = val; | |
1066 | } | |
1067 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
1068 | { | |
1069 | vcpu->spin_loop.dy_eligible = val; | |
1070 | } | |
1071 | ||
1072 | #else /* !CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ | |
1073 | ||
1074 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
1075 | { | |
1076 | } | |
1077 | ||
1078 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
1079 | { | |
1080 | } | |
1081 | ||
06e48c51 R |
1082 | static inline bool kvm_vcpu_eligible_for_directed_yield(struct kvm_vcpu *vcpu) |
1083 | { | |
1084 | return true; | |
1085 | } | |
1086 | ||
4c088493 | 1087 | #endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ |
bfd99ff5 | 1088 | #endif |
09a6e1f4 | 1089 |