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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> |
1a02b270 | 27 | #include <linux/irqbypass.h> |
8577370f | 28 | #include <linux/swait.h> |
e8edc6e0 | 29 | #include <asm/signal.h> |
6aa8b732 | 30 | |
6aa8b732 | 31 | #include <linux/kvm.h> |
102d8325 | 32 | #include <linux/kvm_para.h> |
6aa8b732 | 33 | |
edf88417 | 34 | #include <linux/kvm_types.h> |
d77a39d9 | 35 | |
edf88417 | 36 | #include <asm/kvm_host.h> |
d657a98e | 37 | |
0b1b1dfd GK |
38 | #ifndef KVM_MAX_VCPU_ID |
39 | #define KVM_MAX_VCPU_ID KVM_MAX_VCPUS | |
40 | #endif | |
41 | ||
67b29204 XG |
42 | /* |
43 | * The bit 16 ~ bit 31 of kvm_memory_region::flags are internally used | |
44 | * in kvm, other bits are visible for userspace which are defined in | |
45 | * include/linux/kvm_h. | |
46 | */ | |
47 | #define KVM_MEMSLOT_INVALID (1UL << 16) | |
1050dcda | 48 | #define KVM_MEMSLOT_INCOHERENT (1UL << 17) |
67b29204 | 49 | |
87da7e66 XG |
50 | /* Two fragments for cross MMIO pages. */ |
51 | #define KVM_MAX_MMIO_FRAGMENTS 2 | |
f78146b0 | 52 | |
f481b069 PB |
53 | #ifndef KVM_ADDRESS_SPACE_NUM |
54 | #define KVM_ADDRESS_SPACE_NUM 1 | |
55 | #endif | |
56 | ||
9c5b1172 XG |
57 | /* |
58 | * For the normal pfn, the highest 12 bits should be zero, | |
81c52c56 XG |
59 | * so we can mask bit 62 ~ bit 52 to indicate the error pfn, |
60 | * mask bit 63 to indicate the noslot pfn. | |
9c5b1172 | 61 | */ |
81c52c56 XG |
62 | #define KVM_PFN_ERR_MASK (0x7ffULL << 52) |
63 | #define KVM_PFN_ERR_NOSLOT_MASK (0xfffULL << 52) | |
64 | #define KVM_PFN_NOSLOT (0x1ULL << 63) | |
9c5b1172 XG |
65 | |
66 | #define KVM_PFN_ERR_FAULT (KVM_PFN_ERR_MASK) | |
67 | #define KVM_PFN_ERR_HWPOISON (KVM_PFN_ERR_MASK + 1) | |
81c52c56 | 68 | #define KVM_PFN_ERR_RO_FAULT (KVM_PFN_ERR_MASK + 2) |
6c8ee57b | 69 | |
81c52c56 XG |
70 | /* |
71 | * error pfns indicate that the gfn is in slot but faild to | |
72 | * translate it to pfn on host. | |
73 | */ | |
ba049e93 | 74 | static inline bool is_error_pfn(kvm_pfn_t pfn) |
83f09228 | 75 | { |
9c5b1172 | 76 | return !!(pfn & KVM_PFN_ERR_MASK); |
83f09228 XG |
77 | } |
78 | ||
81c52c56 XG |
79 | /* |
80 | * error_noslot pfns indicate that the gfn can not be | |
81 | * translated to pfn - it is not in slot or failed to | |
82 | * translate it to pfn. | |
83 | */ | |
ba049e93 | 84 | static inline bool is_error_noslot_pfn(kvm_pfn_t pfn) |
83f09228 | 85 | { |
81c52c56 | 86 | return !!(pfn & KVM_PFN_ERR_NOSLOT_MASK); |
83f09228 XG |
87 | } |
88 | ||
81c52c56 | 89 | /* noslot pfn indicates that the gfn is not in slot. */ |
ba049e93 | 90 | static inline bool is_noslot_pfn(kvm_pfn_t pfn) |
83f09228 | 91 | { |
81c52c56 | 92 | return pfn == KVM_PFN_NOSLOT; |
83f09228 XG |
93 | } |
94 | ||
bf640876 DD |
95 | /* |
96 | * architectures with KVM_HVA_ERR_BAD other than PAGE_OFFSET (e.g. s390) | |
97 | * provide own defines and kvm_is_error_hva | |
98 | */ | |
99 | #ifndef KVM_HVA_ERR_BAD | |
100 | ||
7068d097 XG |
101 | #define KVM_HVA_ERR_BAD (PAGE_OFFSET) |
102 | #define KVM_HVA_ERR_RO_BAD (PAGE_OFFSET + PAGE_SIZE) | |
ca3a490c XG |
103 | |
104 | static inline bool kvm_is_error_hva(unsigned long addr) | |
105 | { | |
7068d097 | 106 | return addr >= PAGE_OFFSET; |
ca3a490c XG |
107 | } |
108 | ||
bf640876 DD |
109 | #endif |
110 | ||
6cede2e6 XG |
111 | #define KVM_ERR_PTR_BAD_PAGE (ERR_PTR(-ENOENT)) |
112 | ||
9c5b1172 | 113 | static inline bool is_error_page(struct page *page) |
6cede2e6 XG |
114 | { |
115 | return IS_ERR(page); | |
116 | } | |
117 | ||
d9e368d6 | 118 | /* |
2860c4b1 PB |
119 | * Architecture-independent vcpu->requests bit members |
120 | * Bits 4-7 are reserved for more arch-independent bits. | |
d9e368d6 | 121 | */ |
3176bc3e | 122 | #define KVM_REQ_TLB_FLUSH 0 |
6662ba34 PB |
123 | #define KVM_REQ_MMU_RELOAD 1 |
124 | #define KVM_REQ_PENDING_TIMER 2 | |
125 | #define KVM_REQ_UNHALT 3 | |
0cd31043 | 126 | |
7a84428a AW |
127 | #define KVM_USERSPACE_IRQ_SOURCE_ID 0 |
128 | #define KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID 1 | |
5550af4d | 129 | |
c16f862d | 130 | extern struct kmem_cache *kvm_vcpu_cache; |
6aa8b732 | 131 | |
2f303b74 | 132 | extern spinlock_t kvm_lock; |
fc1b7492 GL |
133 | extern struct list_head vm_list; |
134 | ||
743eeb0b SL |
135 | struct kvm_io_range { |
136 | gpa_t addr; | |
137 | int len; | |
138 | struct kvm_io_device *dev; | |
139 | }; | |
140 | ||
786a9f88 | 141 | #define NR_IOBUS_DEVS 1000 |
a1300716 | 142 | |
2eeb2e94 | 143 | struct kvm_io_bus { |
6ea34c9b AK |
144 | int dev_count; |
145 | int ioeventfd_count; | |
a1300716 | 146 | struct kvm_io_range range[]; |
2eeb2e94 GH |
147 | }; |
148 | ||
e93f8a0f MT |
149 | enum kvm_bus { |
150 | KVM_MMIO_BUS, | |
151 | KVM_PIO_BUS, | |
060f0ce6 | 152 | KVM_VIRTIO_CCW_NOTIFY_BUS, |
68c3b4d1 | 153 | KVM_FAST_MMIO_BUS, |
e93f8a0f MT |
154 | KVM_NR_BUSES |
155 | }; | |
156 | ||
e32edf4f | 157 | int kvm_io_bus_write(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr, |
e93f8a0f | 158 | int len, const void *val); |
e32edf4f NN |
159 | int kvm_io_bus_write_cookie(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, |
160 | gpa_t addr, int len, const void *val, long cookie); | |
161 | int kvm_io_bus_read(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr, | |
162 | int len, void *val); | |
743eeb0b SL |
163 | int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, |
164 | int len, struct kvm_io_device *dev); | |
e2a75b4e DH |
165 | void kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx, |
166 | struct kvm_io_device *dev); | |
8a39d006 AP |
167 | struct kvm_io_device *kvm_io_bus_get_dev(struct kvm *kvm, enum kvm_bus bus_idx, |
168 | gpa_t addr); | |
2eeb2e94 | 169 | |
af585b92 GN |
170 | #ifdef CONFIG_KVM_ASYNC_PF |
171 | struct kvm_async_pf { | |
172 | struct work_struct work; | |
173 | struct list_head link; | |
174 | struct list_head queue; | |
175 | struct kvm_vcpu *vcpu; | |
176 | struct mm_struct *mm; | |
177 | gva_t gva; | |
178 | unsigned long addr; | |
179 | struct kvm_arch_async_pf arch; | |
f2e10669 | 180 | bool wakeup_all; |
af585b92 GN |
181 | }; |
182 | ||
183 | void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu); | |
184 | void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu); | |
e0ead41a | 185 | int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, unsigned long hva, |
af585b92 | 186 | struct kvm_arch_async_pf *arch); |
344d9588 | 187 | int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu); |
af585b92 GN |
188 | #endif |
189 | ||
6b7e2d09 XG |
190 | enum { |
191 | OUTSIDE_GUEST_MODE, | |
192 | IN_GUEST_MODE, | |
c142786c AK |
193 | EXITING_GUEST_MODE, |
194 | READING_SHADOW_PAGE_TABLES, | |
6b7e2d09 XG |
195 | }; |
196 | ||
f78146b0 AK |
197 | /* |
198 | * Sometimes a large or cross-page mmio needs to be broken up into separate | |
199 | * exits for userspace servicing. | |
200 | */ | |
201 | struct kvm_mmio_fragment { | |
202 | gpa_t gpa; | |
203 | void *data; | |
204 | unsigned len; | |
205 | }; | |
206 | ||
d17fbbf7 ZX |
207 | struct kvm_vcpu { |
208 | struct kvm *kvm; | |
31bb117e | 209 | #ifdef CONFIG_PREEMPT_NOTIFIERS |
d17fbbf7 | 210 | struct preempt_notifier preempt_notifier; |
31bb117e | 211 | #endif |
6b7e2d09 | 212 | int cpu; |
d17fbbf7 | 213 | int vcpu_id; |
6b7e2d09 XG |
214 | int srcu_idx; |
215 | int mode; | |
d17fbbf7 | 216 | unsigned long requests; |
d0bfb940 | 217 | unsigned long guest_debug; |
6b7e2d09 | 218 | |
bf9f6ac8 FW |
219 | int pre_pcpu; |
220 | struct list_head blocked_vcpu_list; | |
221 | ||
6b7e2d09 XG |
222 | struct mutex mutex; |
223 | struct kvm_run *run; | |
f656ce01 | 224 | |
d17fbbf7 | 225 | int fpu_active; |
2acf923e | 226 | int guest_fpu_loaded, guest_xcr0_loaded; |
8577370f | 227 | struct swait_queue_head wq; |
34bb10b7 | 228 | struct pid *pid; |
d17fbbf7 ZX |
229 | int sigset_active; |
230 | sigset_t sigset; | |
231 | struct kvm_vcpu_stat stat; | |
19020f8a | 232 | unsigned int halt_poll_ns; |
3491caf2 | 233 | bool valid_wakeup; |
d17fbbf7 | 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 | 266 | struct kvm_vcpu_arch arch; |
45b5939e | 267 | struct dentry *debugfs_dentry; |
d657a98e ZX |
268 | }; |
269 | ||
6b7e2d09 XG |
270 | static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu) |
271 | { | |
272 | return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE); | |
273 | } | |
274 | ||
660c22c4 TY |
275 | /* |
276 | * Some of the bitops functions do not support too long bitmaps. | |
277 | * This number must be determined not to exceed such limits. | |
278 | */ | |
279 | #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1) | |
280 | ||
6aa8b732 AK |
281 | struct kvm_memory_slot { |
282 | gfn_t base_gfn; | |
283 | unsigned long npages; | |
6aa8b732 | 284 | unsigned long *dirty_bitmap; |
db3fe4eb | 285 | struct kvm_arch_memory_slot arch; |
8a7ae055 | 286 | unsigned long userspace_addr; |
6104f472 | 287 | u32 flags; |
1e702d9a | 288 | short id; |
6aa8b732 AK |
289 | }; |
290 | ||
87bf6e7d TY |
291 | static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot) |
292 | { | |
293 | return ALIGN(memslot->npages, BITS_PER_LONG) / 8; | |
294 | } | |
295 | ||
84223598 CH |
296 | struct kvm_s390_adapter_int { |
297 | u64 ind_addr; | |
298 | u64 summary_addr; | |
299 | u64 ind_offset; | |
300 | u32 summary_offset; | |
301 | u32 adapter_id; | |
302 | }; | |
303 | ||
5c919412 AS |
304 | struct kvm_hv_sint { |
305 | u32 vcpu; | |
306 | u32 sint; | |
307 | }; | |
308 | ||
399ec807 AK |
309 | struct kvm_kernel_irq_routing_entry { |
310 | u32 gsi; | |
5116d8f6 | 311 | u32 type; |
4925663a | 312 | int (*set)(struct kvm_kernel_irq_routing_entry *e, |
aa2fbe6d YZ |
313 | struct kvm *kvm, int irq_source_id, int level, |
314 | bool line_status); | |
399ec807 AK |
315 | union { |
316 | struct { | |
317 | unsigned irqchip; | |
318 | unsigned pin; | |
319 | } irqchip; | |
0455e72c EA |
320 | struct { |
321 | u32 address_lo; | |
322 | u32 address_hi; | |
323 | u32 data; | |
324 | u32 flags; | |
325 | u32 devid; | |
326 | } msi; | |
84223598 | 327 | struct kvm_s390_adapter_int adapter; |
5c919412 | 328 | struct kvm_hv_sint hv_sint; |
399ec807 | 329 | }; |
46e624b9 GN |
330 | struct hlist_node link; |
331 | }; | |
332 | ||
b053b2ae SR |
333 | #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING |
334 | struct kvm_irq_routing_table { | |
335 | int chip[KVM_NR_IRQCHIPS][KVM_IRQCHIP_NUM_PINS]; | |
336 | u32 nr_rt_entries; | |
337 | /* | |
338 | * Array indexed by gsi. Each entry contains list of irq chips | |
339 | * the gsi is connected to. | |
340 | */ | |
341 | struct hlist_head map[0]; | |
342 | }; | |
343 | #endif | |
344 | ||
0743247f AW |
345 | #ifndef KVM_PRIVATE_MEM_SLOTS |
346 | #define KVM_PRIVATE_MEM_SLOTS 0 | |
347 | #endif | |
348 | ||
93a5cef0 | 349 | #ifndef KVM_MEM_SLOTS_NUM |
bbacc0c1 | 350 | #define KVM_MEM_SLOTS_NUM (KVM_USER_MEM_SLOTS + KVM_PRIVATE_MEM_SLOTS) |
93a5cef0 XG |
351 | #endif |
352 | ||
f481b069 PB |
353 | #ifndef __KVM_VCPU_MULTIPLE_ADDRESS_SPACE |
354 | static inline int kvm_arch_vcpu_memslots_id(struct kvm_vcpu *vcpu) | |
355 | { | |
356 | return 0; | |
357 | } | |
358 | #endif | |
359 | ||
bf3e05bc XG |
360 | /* |
361 | * Note: | |
362 | * memslots are not sorted by id anymore, please use id_to_memslot() | |
363 | * to get the memslot by its id. | |
364 | */ | |
46a26bf5 | 365 | struct kvm_memslots { |
49c7754c | 366 | u64 generation; |
93a5cef0 | 367 | struct kvm_memory_slot memslots[KVM_MEM_SLOTS_NUM]; |
f85e2cb5 | 368 | /* The mapping table from slot id to the index in memslots[]. */ |
1e702d9a | 369 | short id_to_index[KVM_MEM_SLOTS_NUM]; |
d4ae84a0 | 370 | atomic_t lru_slot; |
9c1a5d38 | 371 | int used_slots; |
46a26bf5 MT |
372 | }; |
373 | ||
6aa8b732 | 374 | struct kvm { |
aaee2c94 | 375 | spinlock_t mmu_lock; |
79fac95e | 376 | struct mutex slots_lock; |
6d4e4c4f | 377 | struct mm_struct *mm; /* userspace tied to this vm */ |
f481b069 | 378 | struct kvm_memslots *memslots[KVM_ADDRESS_SPACE_NUM]; |
bc6678a3 | 379 | struct srcu_struct srcu; |
719d93cd | 380 | struct srcu_struct irq_srcu; |
fb3f0f51 | 381 | struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; |
6c7caebc PB |
382 | |
383 | /* | |
384 | * created_vcpus is protected by kvm->lock, and is incremented | |
385 | * at the beginning of KVM_CREATE_VCPU. online_vcpus is only | |
386 | * incremented after storing the kvm_vcpu pointer in vcpus, | |
387 | * and is accessed atomically. | |
388 | */ | |
73880c80 | 389 | atomic_t online_vcpus; |
6c7caebc | 390 | int created_vcpus; |
217ece61 | 391 | int last_boosted_vcpu; |
133de902 | 392 | struct list_head vm_list; |
60eead79 | 393 | struct mutex lock; |
e93f8a0f | 394 | struct kvm_io_bus *buses[KVM_NR_BUSES]; |
721eecbf GH |
395 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
396 | struct { | |
397 | spinlock_t lock; | |
398 | struct list_head items; | |
7a84428a AW |
399 | struct list_head resampler_list; |
400 | struct mutex resampler_lock; | |
721eecbf | 401 | } irqfds; |
d34e6b17 | 402 | struct list_head ioeventfds; |
721eecbf | 403 | #endif |
ba1389b7 | 404 | struct kvm_vm_stat stat; |
d69fb81f | 405 | struct kvm_arch arch; |
d39f13b0 | 406 | atomic_t users_count; |
5f94c174 | 407 | #ifdef KVM_COALESCED_MMIO_PAGE_OFFSET |
5f94c174 | 408 | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; |
2b3c246a SL |
409 | spinlock_t ring_lock; |
410 | struct list_head coalesced_zones; | |
5f94c174 | 411 | #endif |
e930bffe | 412 | |
60eead79 | 413 | struct mutex irq_lock; |
75858a84 | 414 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 | 415 | /* |
9957c86d | 416 | * Update side is protected by irq_lock. |
bd2b53b2 | 417 | */ |
4b6a2872 | 418 | struct kvm_irq_routing_table __rcu *irq_routing; |
c77dcacb PB |
419 | #endif |
420 | #ifdef CONFIG_HAVE_KVM_IRQFD | |
136bdfee | 421 | struct hlist_head irq_ack_notifier_list; |
75858a84 AK |
422 | #endif |
423 | ||
36c1ed82 | 424 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
e930bffe AA |
425 | struct mmu_notifier mmu_notifier; |
426 | unsigned long mmu_notifier_seq; | |
427 | long mmu_notifier_count; | |
428 | #endif | |
a086f6a1 | 429 | long tlbs_dirty; |
07f0a7bd | 430 | struct list_head devices; |
536a6f88 JF |
431 | struct dentry *debugfs_dentry; |
432 | struct kvm_stat_data **debugfs_stat_data; | |
6aa8b732 AK |
433 | }; |
434 | ||
a737f256 CD |
435 | #define kvm_err(fmt, ...) \ |
436 | pr_err("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
437 | #define kvm_info(fmt, ...) \ | |
438 | pr_info("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
439 | #define kvm_debug(fmt, ...) \ | |
440 | pr_debug("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
ae0f5499 BD |
441 | #define kvm_debug_ratelimited(fmt, ...) \ |
442 | pr_debug_ratelimited("kvm [%i]: " fmt, task_pid_nr(current), \ | |
443 | ## __VA_ARGS__) | |
a737f256 CD |
444 | #define kvm_pr_unimpl(fmt, ...) \ |
445 | pr_err_ratelimited("kvm [%i]: " fmt, \ | |
446 | task_tgid_nr(current), ## __VA_ARGS__) | |
f0242478 | 447 | |
a737f256 CD |
448 | /* The guest did something we don't support. */ |
449 | #define vcpu_unimpl(vcpu, fmt, ...) \ | |
671d9ab3 BP |
450 | kvm_pr_unimpl("vcpu%i, guest rIP: 0x%lx " fmt, \ |
451 | (vcpu)->vcpu_id, kvm_rip_read(vcpu), ## __VA_ARGS__) | |
6aa8b732 | 452 | |
ee86dbc6 AS |
453 | #define vcpu_debug(vcpu, fmt, ...) \ |
454 | kvm_debug("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__) | |
ae0f5499 BD |
455 | #define vcpu_debug_ratelimited(vcpu, fmt, ...) \ |
456 | kvm_debug_ratelimited("vcpu%i " fmt, (vcpu)->vcpu_id, \ | |
457 | ## __VA_ARGS__) | |
765eaa0f AS |
458 | #define vcpu_err(vcpu, fmt, ...) \ |
459 | kvm_err("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__) | |
ee86dbc6 | 460 | |
988a2cae GN |
461 | static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i) |
462 | { | |
dd489240 PB |
463 | /* Pairs with smp_wmb() in kvm_vm_ioctl_create_vcpu, in case |
464 | * the caller has read kvm->online_vcpus before (as is the case | |
465 | * for kvm_for_each_vcpu, for example). | |
466 | */ | |
988a2cae GN |
467 | smp_rmb(); |
468 | return kvm->vcpus[i]; | |
469 | } | |
470 | ||
471 | #define kvm_for_each_vcpu(idx, vcpup, kvm) \ | |
b42fc3cb JM |
472 | for (idx = 0; \ |
473 | idx < atomic_read(&kvm->online_vcpus) && \ | |
474 | (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \ | |
475 | idx++) | |
988a2cae | 476 | |
db27a7a3 DH |
477 | static inline struct kvm_vcpu *kvm_get_vcpu_by_id(struct kvm *kvm, int id) |
478 | { | |
9b9e3fc4 | 479 | struct kvm_vcpu *vcpu = NULL; |
db27a7a3 DH |
480 | int i; |
481 | ||
9b9e3fc4 | 482 | if (id < 0) |
c896939f | 483 | return NULL; |
9b9e3fc4 GK |
484 | if (id < KVM_MAX_VCPUS) |
485 | vcpu = kvm_get_vcpu(kvm, id); | |
c896939f DH |
486 | if (vcpu && vcpu->vcpu_id == id) |
487 | return vcpu; | |
db27a7a3 DH |
488 | kvm_for_each_vcpu(i, vcpu, kvm) |
489 | if (vcpu->vcpu_id == id) | |
490 | return vcpu; | |
491 | return NULL; | |
492 | } | |
493 | ||
be6ba0f0 XG |
494 | #define kvm_for_each_memslot(memslot, slots) \ |
495 | for (memslot = &slots->memslots[0]; \ | |
bf3e05bc XG |
496 | memslot < slots->memslots + KVM_MEM_SLOTS_NUM && memslot->npages;\ |
497 | memslot++) | |
be6ba0f0 | 498 | |
fb3f0f51 RR |
499 | int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id); |
500 | void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); | |
501 | ||
9fc77441 | 502 | int __must_check vcpu_load(struct kvm_vcpu *vcpu); |
313a3dc7 CO |
503 | void vcpu_put(struct kvm_vcpu *vcpu); |
504 | ||
6ef768fa PB |
505 | #ifdef __KVM_HAVE_IOAPIC |
506 | void kvm_vcpu_request_scan_ioapic(struct kvm *kvm); | |
abdb080f | 507 | void kvm_arch_post_irq_routing_update(struct kvm *kvm); |
6ef768fa PB |
508 | #else |
509 | static inline void kvm_vcpu_request_scan_ioapic(struct kvm *kvm) | |
510 | { | |
511 | } | |
abdb080f | 512 | static inline void kvm_arch_post_irq_routing_update(struct kvm *kvm) |
b053b2ae SR |
513 | { |
514 | } | |
6ef768fa PB |
515 | #endif |
516 | ||
297e2105 | 517 | #ifdef CONFIG_HAVE_KVM_IRQFD |
a0f155e9 CH |
518 | int kvm_irqfd_init(void); |
519 | void kvm_irqfd_exit(void); | |
520 | #else | |
521 | static inline int kvm_irqfd_init(void) | |
522 | { | |
523 | return 0; | |
524 | } | |
525 | ||
526 | static inline void kvm_irqfd_exit(void) | |
527 | { | |
528 | } | |
529 | #endif | |
0ee75bea | 530 | int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, |
c16f862d | 531 | struct module *module); |
cb498ea2 | 532 | void kvm_exit(void); |
6aa8b732 | 533 | |
d39f13b0 IE |
534 | void kvm_get_kvm(struct kvm *kvm); |
535 | void kvm_put_kvm(struct kvm *kvm); | |
536 | ||
f481b069 | 537 | static inline struct kvm_memslots *__kvm_memslots(struct kvm *kvm, int as_id) |
90d83dc3 | 538 | { |
f481b069 | 539 | return rcu_dereference_check(kvm->memslots[as_id], |
90d83dc3 LJ |
540 | srcu_read_lock_held(&kvm->srcu) |
541 | || lockdep_is_held(&kvm->slots_lock)); | |
542 | } | |
543 | ||
f481b069 PB |
544 | static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm) |
545 | { | |
546 | return __kvm_memslots(kvm, 0); | |
547 | } | |
548 | ||
8e73485c PB |
549 | static inline struct kvm_memslots *kvm_vcpu_memslots(struct kvm_vcpu *vcpu) |
550 | { | |
f481b069 PB |
551 | int as_id = kvm_arch_vcpu_memslots_id(vcpu); |
552 | ||
553 | return __kvm_memslots(vcpu->kvm, as_id); | |
8e73485c PB |
554 | } |
555 | ||
28a37544 XG |
556 | static inline struct kvm_memory_slot * |
557 | id_to_memslot(struct kvm_memslots *slots, int id) | |
558 | { | |
f85e2cb5 XG |
559 | int index = slots->id_to_index[id]; |
560 | struct kvm_memory_slot *slot; | |
bf3e05bc | 561 | |
f85e2cb5 | 562 | slot = &slots->memslots[index]; |
bf3e05bc | 563 | |
f85e2cb5 XG |
564 | WARN_ON(slot->id != id); |
565 | return slot; | |
28a37544 XG |
566 | } |
567 | ||
74d0727c TY |
568 | /* |
569 | * KVM_SET_USER_MEMORY_REGION ioctl allows the following operations: | |
570 | * - create a new memory slot | |
571 | * - delete an existing memory slot | |
572 | * - modify an existing memory slot | |
573 | * -- move it in the guest physical memory space | |
574 | * -- just change its flags | |
575 | * | |
576 | * Since flags can be changed by some of these operations, the following | |
577 | * differentiation is the best we can do for __kvm_set_memory_region(): | |
578 | */ | |
579 | enum kvm_mr_change { | |
580 | KVM_MR_CREATE, | |
581 | KVM_MR_DELETE, | |
582 | KVM_MR_MOVE, | |
583 | KVM_MR_FLAGS_ONLY, | |
584 | }; | |
585 | ||
210c7c4d | 586 | int kvm_set_memory_region(struct kvm *kvm, |
09170a49 | 587 | const struct kvm_userspace_memory_region *mem); |
f78e0e2e | 588 | int __kvm_set_memory_region(struct kvm *kvm, |
09170a49 | 589 | const struct kvm_userspace_memory_region *mem); |
5587027c | 590 | void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free, |
db3fe4eb | 591 | struct kvm_memory_slot *dont); |
5587027c AK |
592 | int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, |
593 | unsigned long npages); | |
15f46015 | 594 | void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots); |
f7784b8e MT |
595 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
596 | struct kvm_memory_slot *memslot, | |
09170a49 | 597 | const struct kvm_userspace_memory_region *mem, |
7b6195a9 | 598 | enum kvm_mr_change change); |
f7784b8e | 599 | void kvm_arch_commit_memory_region(struct kvm *kvm, |
09170a49 | 600 | const struct kvm_userspace_memory_region *mem, |
8482644a | 601 | const struct kvm_memory_slot *old, |
f36f3f28 | 602 | const struct kvm_memory_slot *new, |
8482644a | 603 | enum kvm_mr_change change); |
db3fe4eb | 604 | bool kvm_largepages_enabled(void); |
54dee993 | 605 | void kvm_disable_largepages(void); |
2df72e9b MT |
606 | /* flush all memory translations */ |
607 | void kvm_arch_flush_shadow_all(struct kvm *kvm); | |
608 | /* flush memory translations pointing to 'slot' */ | |
609 | void kvm_arch_flush_shadow_memslot(struct kvm *kvm, | |
610 | struct kvm_memory_slot *slot); | |
a983fb23 | 611 | |
d9ef13c2 PB |
612 | int gfn_to_page_many_atomic(struct kvm_memory_slot *slot, gfn_t gfn, |
613 | struct page **pages, int nr_pages); | |
48987781 | 614 | |
954bbbc2 | 615 | struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); |
05da4558 | 616 | unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn); |
ba6a3541 | 617 | unsigned long gfn_to_hva_prot(struct kvm *kvm, gfn_t gfn, bool *writable); |
4d8b81ab | 618 | unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
64d83126 CD |
619 | unsigned long gfn_to_hva_memslot_prot(struct kvm_memory_slot *slot, gfn_t gfn, |
620 | bool *writable); | |
b4231d61 IE |
621 | void kvm_release_page_clean(struct page *page); |
622 | void kvm_release_page_dirty(struct page *page); | |
35149e21 AL |
623 | void kvm_set_page_accessed(struct page *page); |
624 | ||
ba049e93 DW |
625 | kvm_pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn); |
626 | kvm_pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn); | |
627 | kvm_pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault, | |
612819c3 | 628 | bool *writable); |
ba049e93 DW |
629 | kvm_pfn_t gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
630 | kvm_pfn_t gfn_to_pfn_memslot_atomic(struct kvm_memory_slot *slot, gfn_t gfn); | |
631 | kvm_pfn_t __gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn, | |
632 | bool atomic, bool *async, bool write_fault, | |
633 | bool *writable); | |
037d92dc | 634 | |
ba049e93 DW |
635 | void kvm_release_pfn_clean(kvm_pfn_t pfn); |
636 | void kvm_set_pfn_dirty(kvm_pfn_t pfn); | |
637 | void kvm_set_pfn_accessed(kvm_pfn_t pfn); | |
638 | void kvm_get_pfn(kvm_pfn_t pfn); | |
35149e21 | 639 | |
195aefde IE |
640 | int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, |
641 | int len); | |
7ec54588 MT |
642 | int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data, |
643 | unsigned long len); | |
195aefde | 644 | int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); |
e03b644f GN |
645 | int kvm_read_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
646 | void *data, unsigned long len); | |
195aefde IE |
647 | int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, |
648 | int offset, int len); | |
649 | int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, | |
650 | unsigned long len); | |
49c7754c GN |
651 | int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
652 | void *data, unsigned long len); | |
4ec6e863 PX |
653 | int kvm_write_guest_offset_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
654 | void *data, int offset, unsigned long len); | |
49c7754c | 655 | int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
8f964525 | 656 | gpa_t gpa, unsigned long len); |
195aefde IE |
657 | int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); |
658 | int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); | |
6aa8b732 | 659 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); |
33e94154 | 660 | bool kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); |
8f0b1ab6 | 661 | unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn); |
6aa8b732 AK |
662 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); |
663 | ||
8e73485c PB |
664 | struct kvm_memslots *kvm_vcpu_memslots(struct kvm_vcpu *vcpu); |
665 | struct kvm_memory_slot *kvm_vcpu_gfn_to_memslot(struct kvm_vcpu *vcpu, gfn_t gfn); | |
ba049e93 DW |
666 | kvm_pfn_t kvm_vcpu_gfn_to_pfn_atomic(struct kvm_vcpu *vcpu, gfn_t gfn); |
667 | kvm_pfn_t kvm_vcpu_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn); | |
8e73485c PB |
668 | struct page *kvm_vcpu_gfn_to_page(struct kvm_vcpu *vcpu, gfn_t gfn); |
669 | unsigned long kvm_vcpu_gfn_to_hva(struct kvm_vcpu *vcpu, gfn_t gfn); | |
670 | unsigned long kvm_vcpu_gfn_to_hva_prot(struct kvm_vcpu *vcpu, gfn_t gfn, bool *writable); | |
671 | int kvm_vcpu_read_guest_page(struct kvm_vcpu *vcpu, gfn_t gfn, void *data, int offset, | |
672 | int len); | |
673 | int kvm_vcpu_read_guest_atomic(struct kvm_vcpu *vcpu, gpa_t gpa, void *data, | |
674 | unsigned long len); | |
675 | int kvm_vcpu_read_guest(struct kvm_vcpu *vcpu, gpa_t gpa, void *data, | |
676 | unsigned long len); | |
677 | int kvm_vcpu_write_guest_page(struct kvm_vcpu *vcpu, gfn_t gfn, const void *data, | |
678 | int offset, int len); | |
679 | int kvm_vcpu_write_guest(struct kvm_vcpu *vcpu, gpa_t gpa, const void *data, | |
680 | unsigned long len); | |
681 | void kvm_vcpu_mark_page_dirty(struct kvm_vcpu *vcpu, gfn_t gfn); | |
682 | ||
8776e519 | 683 | void kvm_vcpu_block(struct kvm_vcpu *vcpu); |
3217f7c2 CD |
684 | void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu); |
685 | void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu); | |
dd1a4cc1 | 686 | void kvm_vcpu_wake_up(struct kvm_vcpu *vcpu); |
b6d33834 | 687 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
fa93384f | 688 | int kvm_vcpu_yield_to(struct kvm_vcpu *target); |
d255f4f2 | 689 | void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu); |
7702fd1f AK |
690 | void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); |
691 | void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); | |
a4ee1ca4 | 692 | |
d9e368d6 | 693 | void kvm_flush_remote_tlbs(struct kvm *kvm); |
2e53d63a | 694 | void kvm_reload_remote_mmus(struct kvm *kvm); |
445b8236 | 695 | bool kvm_make_all_cpus_request(struct kvm *kvm, unsigned int req); |
6aa8b732 | 696 | |
043405e1 CO |
697 | long kvm_arch_dev_ioctl(struct file *filp, |
698 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 CO |
699 | long kvm_arch_vcpu_ioctl(struct file *filp, |
700 | unsigned int ioctl, unsigned long arg); | |
5b1c1493 | 701 | int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf); |
018d00d2 | 702 | |
784aa3d7 | 703 | int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext); |
018d00d2 | 704 | |
5bb064dc ZX |
705 | int kvm_get_dirty_log(struct kvm *kvm, |
706 | struct kvm_dirty_log *log, int *is_dirty); | |
ba0513b5 MS |
707 | |
708 | int kvm_get_dirty_log_protect(struct kvm *kvm, | |
709 | struct kvm_dirty_log *log, bool *is_dirty); | |
710 | ||
3b0f1d01 | 711 | void kvm_arch_mmu_enable_log_dirty_pt_masked(struct kvm *kvm, |
ba0513b5 MS |
712 | struct kvm_memory_slot *slot, |
713 | gfn_t gfn_offset, | |
714 | unsigned long mask); | |
715 | ||
5bb064dc ZX |
716 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, |
717 | struct kvm_dirty_log *log); | |
718 | ||
aa2fbe6d YZ |
719 | int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_level, |
720 | bool line_status); | |
1fe779f8 CO |
721 | long kvm_arch_vm_ioctl(struct file *filp, |
722 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 | 723 | |
d0752060 HB |
724 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); |
725 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); | |
726 | ||
8b006791 ZX |
727 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, |
728 | struct kvm_translation *tr); | |
729 | ||
b6c7a5dc HB |
730 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); |
731 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); | |
732 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
733 | struct kvm_sregs *sregs); | |
734 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
735 | struct kvm_sregs *sregs); | |
62d9f0db MT |
736 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
737 | struct kvm_mp_state *mp_state); | |
738 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
739 | struct kvm_mp_state *mp_state); | |
d0bfb940 JK |
740 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
741 | struct kvm_guest_debug *dbg); | |
b6c7a5dc HB |
742 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); |
743 | ||
f8c16bba ZX |
744 | int kvm_arch_init(void *opaque); |
745 | void kvm_arch_exit(void); | |
043405e1 | 746 | |
e9b11c17 ZX |
747 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); |
748 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu); | |
749 | ||
e790d9ef RK |
750 | void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu); |
751 | ||
e9b11c17 ZX |
752 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu); |
753 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
754 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); | |
755 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); | |
26e5215f | 756 | int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu); |
31928aa5 | 757 | void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu); |
d40ccc62 | 758 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu); |
e9b11c17 | 759 | |
235539b4 LC |
760 | bool kvm_arch_has_vcpu_debugfs(void); |
761 | int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu); | |
762 | ||
13a34e06 RK |
763 | int kvm_arch_hardware_enable(void); |
764 | void kvm_arch_hardware_disable(void); | |
e9b11c17 ZX |
765 | int kvm_arch_hardware_setup(void); |
766 | void kvm_arch_hardware_unsetup(void); | |
767 | void kvm_arch_check_processor_compat(void *rtn); | |
1d737c8a | 768 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu); |
b6d33834 | 769 | int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu); |
e9b11c17 | 770 | |
c1a7b32a | 771 | void *kvm_kvzalloc(unsigned long size); |
c1a7b32a | 772 | |
d89f5eff JK |
773 | #ifndef __KVM_HAVE_ARCH_VM_ALLOC |
774 | static inline struct kvm *kvm_arch_alloc_vm(void) | |
775 | { | |
776 | return kzalloc(sizeof(struct kvm), GFP_KERNEL); | |
777 | } | |
778 | ||
779 | static inline void kvm_arch_free_vm(struct kvm *kvm) | |
780 | { | |
781 | kfree(kvm); | |
782 | } | |
783 | #endif | |
784 | ||
e0f0bbc5 AW |
785 | #ifdef __KVM_HAVE_ARCH_NONCOHERENT_DMA |
786 | void kvm_arch_register_noncoherent_dma(struct kvm *kvm); | |
787 | void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm); | |
788 | bool kvm_arch_has_noncoherent_dma(struct kvm *kvm); | |
789 | #else | |
790 | static inline void kvm_arch_register_noncoherent_dma(struct kvm *kvm) | |
791 | { | |
792 | } | |
793 | ||
794 | static inline void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm) | |
795 | { | |
796 | } | |
797 | ||
798 | static inline bool kvm_arch_has_noncoherent_dma(struct kvm *kvm) | |
799 | { | |
800 | return false; | |
801 | } | |
802 | #endif | |
5544eb9b PB |
803 | #ifdef __KVM_HAVE_ARCH_ASSIGNED_DEVICE |
804 | void kvm_arch_start_assignment(struct kvm *kvm); | |
805 | void kvm_arch_end_assignment(struct kvm *kvm); | |
806 | bool kvm_arch_has_assigned_device(struct kvm *kvm); | |
807 | #else | |
808 | static inline void kvm_arch_start_assignment(struct kvm *kvm) | |
809 | { | |
810 | } | |
811 | ||
812 | static inline void kvm_arch_end_assignment(struct kvm *kvm) | |
813 | { | |
814 | } | |
815 | ||
816 | static inline bool kvm_arch_has_assigned_device(struct kvm *kvm) | |
817 | { | |
818 | return false; | |
819 | } | |
820 | #endif | |
e0f0bbc5 | 821 | |
8577370f | 822 | static inline struct swait_queue_head *kvm_arch_vcpu_wq(struct kvm_vcpu *vcpu) |
b6d33834 | 823 | { |
2246f8b5 AG |
824 | #ifdef __KVM_HAVE_ARCH_WQP |
825 | return vcpu->arch.wqp; | |
826 | #else | |
b6d33834 | 827 | return &vcpu->wq; |
b6d33834 | 828 | #endif |
2246f8b5 | 829 | } |
b6d33834 | 830 | |
01c94e64 EA |
831 | #ifdef __KVM_HAVE_ARCH_INTC_INITIALIZED |
832 | /* | |
833 | * returns true if the virtual interrupt controller is initialized and | |
834 | * ready to accept virtual IRQ. On some architectures the virtual interrupt | |
835 | * controller is dynamically instantiated and this is not always true. | |
836 | */ | |
837 | bool kvm_arch_intc_initialized(struct kvm *kvm); | |
838 | #else | |
839 | static inline bool kvm_arch_intc_initialized(struct kvm *kvm) | |
840 | { | |
841 | return true; | |
842 | } | |
843 | #endif | |
844 | ||
e08b9637 | 845 | int kvm_arch_init_vm(struct kvm *kvm, unsigned long type); |
d19a9cd2 | 846 | void kvm_arch_destroy_vm(struct kvm *kvm); |
ad8ba2cd | 847 | void kvm_arch_sync_events(struct kvm *kvm); |
e9b11c17 | 848 | |
3d80840d | 849 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu); |
5736199a | 850 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
682c59a3 | 851 | |
ba049e93 | 852 | bool kvm_is_reserved_pfn(kvm_pfn_t pfn); |
c77fb9dc | 853 | |
62c476c7 BAY |
854 | struct kvm_irq_ack_notifier { |
855 | struct hlist_node link; | |
856 | unsigned gsi; | |
857 | void (*irq_acked)(struct kvm_irq_ack_notifier *kian); | |
858 | }; | |
859 | ||
9957c86d PM |
860 | int kvm_irq_map_gsi(struct kvm *kvm, |
861 | struct kvm_kernel_irq_routing_entry *entries, int gsi); | |
862 | int kvm_irq_map_chip_pin(struct kvm *kvm, unsigned irqchip, unsigned pin); | |
8ba918d4 | 863 | |
aa2fbe6d YZ |
864 | int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level, |
865 | bool line_status); | |
bd2b53b2 | 866 | int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm, |
aa2fbe6d | 867 | int irq_source_id, int level, bool line_status); |
b97e6de9 PB |
868 | int kvm_arch_set_irq_inatomic(struct kvm_kernel_irq_routing_entry *e, |
869 | struct kvm *kvm, int irq_source_id, | |
870 | int level, bool line_status); | |
c7c9c56c | 871 | bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin); |
ba1aefcd | 872 | void kvm_notify_acked_gsi(struct kvm *kvm, int gsi); |
44882eed | 873 | void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin); |
3de42dc0 XZ |
874 | void kvm_register_irq_ack_notifier(struct kvm *kvm, |
875 | struct kvm_irq_ack_notifier *kian); | |
fa40a821 MT |
876 | void kvm_unregister_irq_ack_notifier(struct kvm *kvm, |
877 | struct kvm_irq_ack_notifier *kian); | |
5550af4d SY |
878 | int kvm_request_irq_source_id(struct kvm *kvm); |
879 | void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id); | |
62c476c7 | 880 | |
2a5bab10 | 881 | #ifdef CONFIG_KVM_DEVICE_ASSIGNMENT |
3ad26d81 | 882 | int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
32f6daad | 883 | void kvm_iommu_unmap_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
2a5bab10 | 884 | #else |
62c476c7 | 885 | static inline int kvm_iommu_map_pages(struct kvm *kvm, |
d7a79b6c | 886 | struct kvm_memory_slot *slot) |
62c476c7 BAY |
887 | { |
888 | return 0; | |
889 | } | |
890 | ||
32f6daad AW |
891 | static inline void kvm_iommu_unmap_pages(struct kvm *kvm, |
892 | struct kvm_memory_slot *slot) | |
893 | { | |
894 | } | |
2a5bab10 | 895 | #endif |
62c476c7 | 896 | |
9d4cba7f PM |
897 | /* |
898 | * search_memslots() and __gfn_to_memslot() are here because they are | |
899 | * used in non-modular code in arch/powerpc/kvm/book3s_hv_rm_mmu.c. | |
900 | * gfn_to_memslot() itself isn't here as an inline because that would | |
901 | * bloat other code too much. | |
902 | */ | |
903 | static inline struct kvm_memory_slot * | |
904 | search_memslots(struct kvm_memslots *slots, gfn_t gfn) | |
905 | { | |
9c1a5d38 | 906 | int start = 0, end = slots->used_slots; |
d4ae84a0 | 907 | int slot = atomic_read(&slots->lru_slot); |
9c1a5d38 IM |
908 | struct kvm_memory_slot *memslots = slots->memslots; |
909 | ||
910 | if (gfn >= memslots[slot].base_gfn && | |
911 | gfn < memslots[slot].base_gfn + memslots[slot].npages) | |
912 | return &memslots[slot]; | |
913 | ||
914 | while (start < end) { | |
915 | slot = start + (end - start) / 2; | |
916 | ||
917 | if (gfn >= memslots[slot].base_gfn) | |
918 | end = slot; | |
919 | else | |
920 | start = slot + 1; | |
921 | } | |
922 | ||
923 | if (gfn >= memslots[start].base_gfn && | |
924 | gfn < memslots[start].base_gfn + memslots[start].npages) { | |
925 | atomic_set(&slots->lru_slot, start); | |
926 | return &memslots[start]; | |
927 | } | |
9d4cba7f PM |
928 | |
929 | return NULL; | |
930 | } | |
931 | ||
932 | static inline struct kvm_memory_slot * | |
933 | __gfn_to_memslot(struct kvm_memslots *slots, gfn_t gfn) | |
934 | { | |
935 | return search_memslots(slots, gfn); | |
936 | } | |
937 | ||
66a03505 GS |
938 | static inline unsigned long |
939 | __gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn) | |
940 | { | |
941 | return slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE; | |
942 | } | |
943 | ||
0ee8dcb8 XG |
944 | static inline int memslot_id(struct kvm *kvm, gfn_t gfn) |
945 | { | |
946 | return gfn_to_memslot(kvm, gfn)->id; | |
947 | } | |
948 | ||
d19a748b TY |
949 | static inline gfn_t |
950 | hva_to_gfn_memslot(unsigned long hva, struct kvm_memory_slot *slot) | |
887c08ac | 951 | { |
d19a748b TY |
952 | gfn_t gfn_offset = (hva - slot->userspace_addr) >> PAGE_SHIFT; |
953 | ||
954 | return slot->base_gfn + gfn_offset; | |
887c08ac XG |
955 | } |
956 | ||
1755fbcc AK |
957 | static inline gpa_t gfn_to_gpa(gfn_t gfn) |
958 | { | |
959 | return (gpa_t)gfn << PAGE_SHIFT; | |
960 | } | |
6aa8b732 | 961 | |
c30a358d JR |
962 | static inline gfn_t gpa_to_gfn(gpa_t gpa) |
963 | { | |
964 | return (gfn_t)(gpa >> PAGE_SHIFT); | |
965 | } | |
966 | ||
ba049e93 | 967 | static inline hpa_t pfn_to_hpa(kvm_pfn_t pfn) |
62c476c7 BAY |
968 | { |
969 | return (hpa_t)pfn << PAGE_SHIFT; | |
970 | } | |
971 | ||
dfeec843 HC |
972 | static inline bool kvm_is_error_gpa(struct kvm *kvm, gpa_t gpa) |
973 | { | |
974 | unsigned long hva = gfn_to_hva(kvm, gpa_to_gfn(gpa)); | |
975 | ||
976 | return kvm_is_error_hva(hva); | |
977 | } | |
978 | ||
ba1389b7 AK |
979 | enum kvm_stat_kind { |
980 | KVM_STAT_VM, | |
981 | KVM_STAT_VCPU, | |
982 | }; | |
983 | ||
536a6f88 JF |
984 | struct kvm_stat_data { |
985 | int offset; | |
986 | struct kvm *kvm; | |
987 | }; | |
988 | ||
417bc304 HB |
989 | struct kvm_stats_debugfs_item { |
990 | const char *name; | |
991 | int offset; | |
ba1389b7 | 992 | enum kvm_stat_kind kind; |
417bc304 HB |
993 | }; |
994 | extern struct kvm_stats_debugfs_item debugfs_entries[]; | |
76f7c879 | 995 | extern struct dentry *kvm_debugfs_dir; |
d4c9ff2d | 996 | |
36c1ed82 | 997 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
8ca40a70 | 998 | static inline int mmu_notifier_retry(struct kvm *kvm, unsigned long mmu_seq) |
e930bffe | 999 | { |
8ca40a70 | 1000 | if (unlikely(kvm->mmu_notifier_count)) |
e930bffe AA |
1001 | return 1; |
1002 | /* | |
a355aa54 PM |
1003 | * Ensure the read of mmu_notifier_count happens before the read |
1004 | * of mmu_notifier_seq. This interacts with the smp_wmb() in | |
1005 | * mmu_notifier_invalidate_range_end to make sure that the caller | |
1006 | * either sees the old (non-zero) value of mmu_notifier_count or | |
1007 | * the new (incremented) value of mmu_notifier_seq. | |
1008 | * PowerPC Book3s HV KVM calls this under a per-page lock | |
1009 | * rather than under kvm->mmu_lock, for scalability, so | |
1010 | * can't rely on kvm->mmu_lock to keep things ordered. | |
e930bffe | 1011 | */ |
a355aa54 | 1012 | smp_rmb(); |
8ca40a70 | 1013 | if (kvm->mmu_notifier_seq != mmu_seq) |
e930bffe AA |
1014 | return 1; |
1015 | return 0; | |
1016 | } | |
1017 | #endif | |
1018 | ||
a725d56a | 1019 | #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING |
399ec807 | 1020 | |
f3f710bc CH |
1021 | #ifdef CONFIG_S390 |
1022 | #define KVM_MAX_IRQ_ROUTES 4096 //FIXME: we can have more than that... | |
995a0ee9 EA |
1023 | #elif defined(CONFIG_ARM64) |
1024 | #define KVM_MAX_IRQ_ROUTES 4096 | |
f3f710bc | 1025 | #else |
399ec807 | 1026 | #define KVM_MAX_IRQ_ROUTES 1024 |
f3f710bc | 1027 | #endif |
399ec807 | 1028 | |
399ec807 AK |
1029 | int kvm_set_irq_routing(struct kvm *kvm, |
1030 | const struct kvm_irq_routing_entry *entries, | |
1031 | unsigned nr, | |
1032 | unsigned flags); | |
c63cf538 RK |
1033 | int kvm_set_routing_entry(struct kvm *kvm, |
1034 | struct kvm_kernel_irq_routing_entry *e, | |
e8cde093 | 1035 | const struct kvm_irq_routing_entry *ue); |
399ec807 AK |
1036 | void kvm_free_irq_routing(struct kvm *kvm); |
1037 | ||
1038 | #else | |
1039 | ||
1040 | static inline void kvm_free_irq_routing(struct kvm *kvm) {} | |
1041 | ||
1042 | #endif | |
1043 | ||
297e2105 PM |
1044 | int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi); |
1045 | ||
721eecbf GH |
1046 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
1047 | ||
d34e6b17 | 1048 | void kvm_eventfd_init(struct kvm *kvm); |
914daba8 AG |
1049 | int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args); |
1050 | ||
297e2105 | 1051 | #ifdef CONFIG_HAVE_KVM_IRQFD |
d4db2935 | 1052 | int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args); |
721eecbf | 1053 | void kvm_irqfd_release(struct kvm *kvm); |
9957c86d | 1054 | void kvm_irq_routing_update(struct kvm *); |
914daba8 AG |
1055 | #else |
1056 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) | |
1057 | { | |
1058 | return -EINVAL; | |
1059 | } | |
1060 | ||
1061 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
1062 | #endif | |
721eecbf GH |
1063 | |
1064 | #else | |
1065 | ||
d34e6b17 | 1066 | static inline void kvm_eventfd_init(struct kvm *kvm) {} |
bd2b53b2 | 1067 | |
d4db2935 | 1068 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) |
721eecbf GH |
1069 | { |
1070 | return -EINVAL; | |
1071 | } | |
1072 | ||
1073 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
bd2b53b2 | 1074 | |
27923eb1 | 1075 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
9957c86d | 1076 | static inline void kvm_irq_routing_update(struct kvm *kvm) |
bd2b53b2 | 1077 | { |
bd2b53b2 | 1078 | } |
27923eb1 | 1079 | #endif |
abdb080f | 1080 | void kvm_arch_irq_routing_update(struct kvm *kvm); |
bd2b53b2 | 1081 | |
d34e6b17 GH |
1082 | static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) |
1083 | { | |
1084 | return -ENOSYS; | |
1085 | } | |
721eecbf GH |
1086 | |
1087 | #endif /* CONFIG_HAVE_KVM_EVENTFD */ | |
1088 | ||
a8eeb04a AK |
1089 | static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu) |
1090 | { | |
2e4682ba PB |
1091 | /* |
1092 | * Ensure the rest of the request is published to kvm_check_request's | |
1093 | * caller. Paired with the smp_mb__after_atomic in kvm_check_request. | |
1094 | */ | |
1095 | smp_wmb(); | |
a8eeb04a AK |
1096 | set_bit(req, &vcpu->requests); |
1097 | } | |
1098 | ||
a8eeb04a AK |
1099 | static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu) |
1100 | { | |
0719837c AK |
1101 | if (test_bit(req, &vcpu->requests)) { |
1102 | clear_bit(req, &vcpu->requests); | |
2e4682ba PB |
1103 | |
1104 | /* | |
1105 | * Ensure the rest of the request is visible to kvm_check_request's | |
1106 | * caller. Paired with the smp_wmb in kvm_make_request. | |
1107 | */ | |
1108 | smp_mb__after_atomic(); | |
0719837c AK |
1109 | return true; |
1110 | } else { | |
1111 | return false; | |
1112 | } | |
a8eeb04a AK |
1113 | } |
1114 | ||
8b415dcd GL |
1115 | extern bool kvm_rebooting; |
1116 | ||
ec76d819 SJS |
1117 | extern unsigned int halt_poll_ns; |
1118 | extern unsigned int halt_poll_ns_grow; | |
1119 | extern unsigned int halt_poll_ns_shrink; | |
1120 | ||
852b6d57 SW |
1121 | struct kvm_device { |
1122 | struct kvm_device_ops *ops; | |
1123 | struct kvm *kvm; | |
852b6d57 | 1124 | void *private; |
07f0a7bd | 1125 | struct list_head vm_node; |
852b6d57 SW |
1126 | }; |
1127 | ||
1128 | /* create, destroy, and name are mandatory */ | |
1129 | struct kvm_device_ops { | |
1130 | const char *name; | |
a28ebea2 CD |
1131 | |
1132 | /* | |
1133 | * create is called holding kvm->lock and any operations not suitable | |
1134 | * to do while holding the lock should be deferred to init (see | |
1135 | * below). | |
1136 | */ | |
852b6d57 SW |
1137 | int (*create)(struct kvm_device *dev, u32 type); |
1138 | ||
023e9fdd CD |
1139 | /* |
1140 | * init is called after create if create is successful and is called | |
1141 | * outside of holding kvm->lock. | |
1142 | */ | |
1143 | void (*init)(struct kvm_device *dev); | |
1144 | ||
852b6d57 SW |
1145 | /* |
1146 | * Destroy is responsible for freeing dev. | |
1147 | * | |
1148 | * Destroy may be called before or after destructors are called | |
1149 | * on emulated I/O regions, depending on whether a reference is | |
1150 | * held by a vcpu or other kvm component that gets destroyed | |
1151 | * after the emulated I/O. | |
1152 | */ | |
1153 | void (*destroy)(struct kvm_device *dev); | |
1154 | ||
1155 | int (*set_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1156 | int (*get_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1157 | int (*has_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1158 | long (*ioctl)(struct kvm_device *dev, unsigned int ioctl, | |
1159 | unsigned long arg); | |
1160 | }; | |
1161 | ||
1162 | void kvm_device_get(struct kvm_device *dev); | |
1163 | void kvm_device_put(struct kvm_device *dev); | |
1164 | struct kvm_device *kvm_device_from_filp(struct file *filp); | |
d60eacb0 | 1165 | int kvm_register_device_ops(struct kvm_device_ops *ops, u32 type); |
571ee1b6 | 1166 | void kvm_unregister_device_ops(u32 type); |
852b6d57 | 1167 | |
5df554ad | 1168 | extern struct kvm_device_ops kvm_mpic_ops; |
5975a2e0 | 1169 | extern struct kvm_device_ops kvm_xics_ops; |
ea2f83a7 | 1170 | extern struct kvm_device_ops kvm_arm_vgic_v2_ops; |
a0675c25 | 1171 | extern struct kvm_device_ops kvm_arm_vgic_v3_ops; |
5df554ad | 1172 | |
4c088493 R |
1173 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
1174 | ||
1175 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
1176 | { | |
1177 | vcpu->spin_loop.in_spin_loop = val; | |
1178 | } | |
1179 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
1180 | { | |
1181 | vcpu->spin_loop.dy_eligible = val; | |
1182 | } | |
1183 | ||
1184 | #else /* !CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ | |
1185 | ||
1186 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
1187 | { | |
1188 | } | |
1189 | ||
1190 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
1191 | { | |
1192 | } | |
4c088493 | 1193 | #endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ |
1a02b270 EA |
1194 | |
1195 | #ifdef CONFIG_HAVE_KVM_IRQ_BYPASS | |
14717e20 | 1196 | bool kvm_arch_has_irq_bypass(void); |
1a02b270 EA |
1197 | int kvm_arch_irq_bypass_add_producer(struct irq_bypass_consumer *, |
1198 | struct irq_bypass_producer *); | |
1199 | void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer *, | |
1200 | struct irq_bypass_producer *); | |
1201 | void kvm_arch_irq_bypass_stop(struct irq_bypass_consumer *); | |
1202 | void kvm_arch_irq_bypass_start(struct irq_bypass_consumer *); | |
f70c20aa FW |
1203 | int kvm_arch_update_irqfd_routing(struct kvm *kvm, unsigned int host_irq, |
1204 | uint32_t guest_irq, bool set); | |
1a02b270 | 1205 | #endif /* CONFIG_HAVE_KVM_IRQ_BYPASS */ |
35181e86 | 1206 | |
3491caf2 CB |
1207 | #ifdef CONFIG_HAVE_KVM_INVALID_WAKEUPS |
1208 | /* If we wakeup during the poll time, was it a sucessful poll? */ | |
1209 | static inline bool vcpu_valid_wakeup(struct kvm_vcpu *vcpu) | |
1210 | { | |
1211 | return vcpu->valid_wakeup; | |
1212 | } | |
1213 | ||
1214 | #else | |
1215 | static inline bool vcpu_valid_wakeup(struct kvm_vcpu *vcpu) | |
1216 | { | |
1217 | return true; | |
1218 | } | |
1219 | #endif /* CONFIG_HAVE_KVM_INVALID_WAKEUPS */ | |
1220 | ||
bfd99ff5 | 1221 | #endif |