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20c8ccb1 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
edf88417 AK |
2 | #ifndef __KVM_HOST_H |
3 | #define __KVM_HOST_H | |
6aa8b732 | 4 | |
6aa8b732 AK |
5 | |
6 | #include <linux/types.h> | |
e56a7a28 | 7 | #include <linux/hardirq.h> |
6aa8b732 AK |
8 | #include <linux/list.h> |
9 | #include <linux/mutex.h> | |
10 | #include <linux/spinlock.h> | |
06ff0d37 MR |
11 | #include <linux/signal.h> |
12 | #include <linux/sched.h> | |
187f1882 | 13 | #include <linux/bug.h> |
6aa8b732 | 14 | #include <linux/mm.h> |
b297e672 | 15 | #include <linux/mmu_notifier.h> |
15ad7146 | 16 | #include <linux/preempt.h> |
0937c48d | 17 | #include <linux/msi.h> |
d89f5eff | 18 | #include <linux/slab.h> |
d1e5b0e9 | 19 | #include <linux/vmalloc.h> |
bd2b53b2 | 20 | #include <linux/rcupdate.h> |
bd80158a | 21 | #include <linux/ratelimit.h> |
83f09228 | 22 | #include <linux/err.h> |
c11f11fc | 23 | #include <linux/irqflags.h> |
521921ba | 24 | #include <linux/context_tracking.h> |
1a02b270 | 25 | #include <linux/irqbypass.h> |
8577370f | 26 | #include <linux/swait.h> |
e3736c3e | 27 | #include <linux/refcount.h> |
1d487e9b | 28 | #include <linux/nospec.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) | |
48 | ||
361209e0 | 49 | /* |
164bf7e5 | 50 | * Bit 63 of the memslot generation number is an "update in-progress flag", |
361209e0 SC |
51 | * e.g. is temporarily set for the duration of install_new_memslots(). |
52 | * This flag effectively creates a unique generation number that is used to | |
53 | * mark cached memslot data, e.g. MMIO accesses, as potentially being stale, | |
54 | * i.e. may (or may not) have come from the previous memslots generation. | |
55 | * | |
56 | * This is necessary because the actual memslots update is not atomic with | |
57 | * respect to the generation number update. Updating the generation number | |
58 | * first would allow a vCPU to cache a spte from the old memslots using the | |
59 | * new generation number, and updating the generation number after switching | |
60 | * to the new memslots would allow cache hits using the old generation number | |
61 | * to reference the defunct memslots. | |
62 | * | |
63 | * This mechanism is used to prevent getting hits in KVM's caches while a | |
64 | * memslot update is in-progress, and to prevent cache hits *after* updating | |
65 | * the actual generation number against accesses that were inserted into the | |
66 | * cache *before* the memslots were updated. | |
67 | */ | |
164bf7e5 | 68 | #define KVM_MEMSLOT_GEN_UPDATE_IN_PROGRESS BIT_ULL(63) |
361209e0 | 69 | |
87da7e66 XG |
70 | /* Two fragments for cross MMIO pages. */ |
71 | #define KVM_MAX_MMIO_FRAGMENTS 2 | |
f78146b0 | 72 | |
f481b069 PB |
73 | #ifndef KVM_ADDRESS_SPACE_NUM |
74 | #define KVM_ADDRESS_SPACE_NUM 1 | |
75 | #endif | |
76 | ||
9c5b1172 XG |
77 | /* |
78 | * For the normal pfn, the highest 12 bits should be zero, | |
81c52c56 XG |
79 | * so we can mask bit 62 ~ bit 52 to indicate the error pfn, |
80 | * mask bit 63 to indicate the noslot pfn. | |
9c5b1172 | 81 | */ |
81c52c56 XG |
82 | #define KVM_PFN_ERR_MASK (0x7ffULL << 52) |
83 | #define KVM_PFN_ERR_NOSLOT_MASK (0xfffULL << 52) | |
84 | #define KVM_PFN_NOSLOT (0x1ULL << 63) | |
9c5b1172 XG |
85 | |
86 | #define KVM_PFN_ERR_FAULT (KVM_PFN_ERR_MASK) | |
87 | #define KVM_PFN_ERR_HWPOISON (KVM_PFN_ERR_MASK + 1) | |
81c52c56 | 88 | #define KVM_PFN_ERR_RO_FAULT (KVM_PFN_ERR_MASK + 2) |
6c8ee57b | 89 | |
81c52c56 XG |
90 | /* |
91 | * error pfns indicate that the gfn is in slot but faild to | |
92 | * translate it to pfn on host. | |
93 | */ | |
ba049e93 | 94 | static inline bool is_error_pfn(kvm_pfn_t pfn) |
83f09228 | 95 | { |
9c5b1172 | 96 | return !!(pfn & KVM_PFN_ERR_MASK); |
83f09228 XG |
97 | } |
98 | ||
81c52c56 XG |
99 | /* |
100 | * error_noslot pfns indicate that the gfn can not be | |
101 | * translated to pfn - it is not in slot or failed to | |
102 | * translate it to pfn. | |
103 | */ | |
ba049e93 | 104 | static inline bool is_error_noslot_pfn(kvm_pfn_t pfn) |
83f09228 | 105 | { |
81c52c56 | 106 | return !!(pfn & KVM_PFN_ERR_NOSLOT_MASK); |
83f09228 XG |
107 | } |
108 | ||
81c52c56 | 109 | /* noslot pfn indicates that the gfn is not in slot. */ |
ba049e93 | 110 | static inline bool is_noslot_pfn(kvm_pfn_t pfn) |
83f09228 | 111 | { |
81c52c56 | 112 | return pfn == KVM_PFN_NOSLOT; |
83f09228 XG |
113 | } |
114 | ||
bf640876 DD |
115 | /* |
116 | * architectures with KVM_HVA_ERR_BAD other than PAGE_OFFSET (e.g. s390) | |
117 | * provide own defines and kvm_is_error_hva | |
118 | */ | |
119 | #ifndef KVM_HVA_ERR_BAD | |
120 | ||
7068d097 XG |
121 | #define KVM_HVA_ERR_BAD (PAGE_OFFSET) |
122 | #define KVM_HVA_ERR_RO_BAD (PAGE_OFFSET + PAGE_SIZE) | |
ca3a490c XG |
123 | |
124 | static inline bool kvm_is_error_hva(unsigned long addr) | |
125 | { | |
7068d097 | 126 | return addr >= PAGE_OFFSET; |
ca3a490c XG |
127 | } |
128 | ||
bf640876 DD |
129 | #endif |
130 | ||
6cede2e6 XG |
131 | #define KVM_ERR_PTR_BAD_PAGE (ERR_PTR(-ENOENT)) |
132 | ||
9c5b1172 | 133 | static inline bool is_error_page(struct page *page) |
6cede2e6 XG |
134 | { |
135 | return IS_ERR(page); | |
136 | } | |
137 | ||
930f7fd6 RK |
138 | #define KVM_REQUEST_MASK GENMASK(7,0) |
139 | #define KVM_REQUEST_NO_WAKEUP BIT(8) | |
7a97cec2 | 140 | #define KVM_REQUEST_WAIT BIT(9) |
d9e368d6 | 141 | /* |
2860c4b1 PB |
142 | * Architecture-independent vcpu->requests bit members |
143 | * Bits 4-7 are reserved for more arch-independent bits. | |
d9e368d6 | 144 | */ |
7a97cec2 PB |
145 | #define KVM_REQ_TLB_FLUSH (0 | KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP) |
146 | #define KVM_REQ_MMU_RELOAD (1 | KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP) | |
147 | #define KVM_REQ_PENDING_TIMER 2 | |
148 | #define KVM_REQ_UNHALT 3 | |
2387149e AJ |
149 | #define KVM_REQUEST_ARCH_BASE 8 |
150 | ||
151 | #define KVM_ARCH_REQ_FLAGS(nr, flags) ({ \ | |
86dafed5 | 152 | BUILD_BUG_ON((unsigned)(nr) >= (FIELD_SIZEOF(struct kvm_vcpu, requests) * 8) - KVM_REQUEST_ARCH_BASE); \ |
2387149e AJ |
153 | (unsigned)(((nr) + KVM_REQUEST_ARCH_BASE) | (flags)); \ |
154 | }) | |
155 | #define KVM_ARCH_REQ(nr) KVM_ARCH_REQ_FLAGS(nr, 0) | |
0cd31043 | 156 | |
7a84428a AW |
157 | #define KVM_USERSPACE_IRQ_SOURCE_ID 0 |
158 | #define KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID 1 | |
5550af4d | 159 | |
c16f862d | 160 | extern struct kmem_cache *kvm_vcpu_cache; |
6aa8b732 | 161 | |
2f303b74 | 162 | extern spinlock_t kvm_lock; |
fc1b7492 GL |
163 | extern struct list_head vm_list; |
164 | ||
743eeb0b SL |
165 | struct kvm_io_range { |
166 | gpa_t addr; | |
167 | int len; | |
168 | struct kvm_io_device *dev; | |
169 | }; | |
170 | ||
786a9f88 | 171 | #define NR_IOBUS_DEVS 1000 |
a1300716 | 172 | |
2eeb2e94 | 173 | struct kvm_io_bus { |
6ea34c9b AK |
174 | int dev_count; |
175 | int ioeventfd_count; | |
a1300716 | 176 | struct kvm_io_range range[]; |
2eeb2e94 GH |
177 | }; |
178 | ||
e93f8a0f MT |
179 | enum kvm_bus { |
180 | KVM_MMIO_BUS, | |
181 | KVM_PIO_BUS, | |
060f0ce6 | 182 | KVM_VIRTIO_CCW_NOTIFY_BUS, |
68c3b4d1 | 183 | KVM_FAST_MMIO_BUS, |
e93f8a0f MT |
184 | KVM_NR_BUSES |
185 | }; | |
186 | ||
e32edf4f | 187 | int kvm_io_bus_write(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr, |
e93f8a0f | 188 | int len, const void *val); |
e32edf4f NN |
189 | int kvm_io_bus_write_cookie(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, |
190 | gpa_t addr, int len, const void *val, long cookie); | |
191 | int kvm_io_bus_read(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr, | |
192 | int len, void *val); | |
743eeb0b SL |
193 | int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, |
194 | int len, struct kvm_io_device *dev); | |
90db1043 DH |
195 | void kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx, |
196 | struct kvm_io_device *dev); | |
8a39d006 AP |
197 | struct kvm_io_device *kvm_io_bus_get_dev(struct kvm *kvm, enum kvm_bus bus_idx, |
198 | gpa_t addr); | |
2eeb2e94 | 199 | |
af585b92 GN |
200 | #ifdef CONFIG_KVM_ASYNC_PF |
201 | struct kvm_async_pf { | |
202 | struct work_struct work; | |
203 | struct list_head link; | |
204 | struct list_head queue; | |
205 | struct kvm_vcpu *vcpu; | |
206 | struct mm_struct *mm; | |
207 | gva_t gva; | |
208 | unsigned long addr; | |
209 | struct kvm_arch_async_pf arch; | |
f2e10669 | 210 | bool wakeup_all; |
af585b92 GN |
211 | }; |
212 | ||
213 | void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu); | |
214 | void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu); | |
e0ead41a | 215 | int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, unsigned long hva, |
af585b92 | 216 | struct kvm_arch_async_pf *arch); |
344d9588 | 217 | int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu); |
af585b92 GN |
218 | #endif |
219 | ||
6b7e2d09 XG |
220 | enum { |
221 | OUTSIDE_GUEST_MODE, | |
222 | IN_GUEST_MODE, | |
c142786c AK |
223 | EXITING_GUEST_MODE, |
224 | READING_SHADOW_PAGE_TABLES, | |
6b7e2d09 XG |
225 | }; |
226 | ||
e45adf66 KA |
227 | #define KVM_UNMAPPED_PAGE ((void *) 0x500 + POISON_POINTER_DELTA) |
228 | ||
229 | struct kvm_host_map { | |
230 | /* | |
231 | * Only valid if the 'pfn' is managed by the host kernel (i.e. There is | |
232 | * a 'struct page' for it. When using mem= kernel parameter some memory | |
233 | * can be used as guest memory but they are not managed by host | |
234 | * kernel). | |
235 | * If 'pfn' is not managed by the host kernel, this field is | |
236 | * initialized to KVM_UNMAPPED_PAGE. | |
237 | */ | |
238 | struct page *page; | |
239 | void *hva; | |
240 | kvm_pfn_t pfn; | |
241 | kvm_pfn_t gfn; | |
242 | }; | |
243 | ||
244 | /* | |
245 | * Used to check if the mapping is valid or not. Never use 'kvm_host_map' | |
246 | * directly to check for that. | |
247 | */ | |
248 | static inline bool kvm_vcpu_mapped(struct kvm_host_map *map) | |
249 | { | |
250 | return !!map->hva; | |
251 | } | |
252 | ||
f78146b0 AK |
253 | /* |
254 | * Sometimes a large or cross-page mmio needs to be broken up into separate | |
255 | * exits for userspace servicing. | |
256 | */ | |
257 | struct kvm_mmio_fragment { | |
258 | gpa_t gpa; | |
259 | void *data; | |
260 | unsigned len; | |
261 | }; | |
262 | ||
d17fbbf7 ZX |
263 | struct kvm_vcpu { |
264 | struct kvm *kvm; | |
31bb117e | 265 | #ifdef CONFIG_PREEMPT_NOTIFIERS |
d17fbbf7 | 266 | struct preempt_notifier preempt_notifier; |
31bb117e | 267 | #endif |
6b7e2d09 | 268 | int cpu; |
d17fbbf7 | 269 | int vcpu_id; |
6b7e2d09 XG |
270 | int srcu_idx; |
271 | int mode; | |
86dafed5 | 272 | u64 requests; |
d0bfb940 | 273 | unsigned long guest_debug; |
6b7e2d09 | 274 | |
bf9f6ac8 FW |
275 | int pre_pcpu; |
276 | struct list_head blocked_vcpu_list; | |
277 | ||
6b7e2d09 XG |
278 | struct mutex mutex; |
279 | struct kvm_run *run; | |
f656ce01 | 280 | |
f775b13e | 281 | int guest_xcr0_loaded; |
8577370f | 282 | struct swait_queue_head wq; |
0e4524a5 | 283 | struct pid __rcu *pid; |
d17fbbf7 ZX |
284 | int sigset_active; |
285 | sigset_t sigset; | |
286 | struct kvm_vcpu_stat stat; | |
19020f8a | 287 | unsigned int halt_poll_ns; |
3491caf2 | 288 | bool valid_wakeup; |
d17fbbf7 | 289 | |
34c16eec | 290 | #ifdef CONFIG_HAS_IOMEM |
d17fbbf7 ZX |
291 | int mmio_needed; |
292 | int mmio_read_completed; | |
293 | int mmio_is_write; | |
f78146b0 AK |
294 | int mmio_cur_fragment; |
295 | int mmio_nr_fragments; | |
296 | struct kvm_mmio_fragment mmio_fragments[KVM_MAX_MMIO_FRAGMENTS]; | |
34c16eec | 297 | #endif |
1165f5fe | 298 | |
af585b92 GN |
299 | #ifdef CONFIG_KVM_ASYNC_PF |
300 | struct { | |
301 | u32 queued; | |
302 | struct list_head queue; | |
303 | struct list_head done; | |
304 | spinlock_t lock; | |
305 | } async_pf; | |
306 | #endif | |
307 | ||
4c088493 R |
308 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
309 | /* | |
310 | * Cpu relax intercept or pause loop exit optimization | |
311 | * in_spin_loop: set when a vcpu does a pause loop exit | |
312 | * or cpu relax intercepted. | |
313 | * dy_eligible: indicates whether vcpu is eligible for directed yield. | |
314 | */ | |
315 | struct { | |
316 | bool in_spin_loop; | |
317 | bool dy_eligible; | |
318 | } spin_loop; | |
319 | #endif | |
3a08a8f9 | 320 | bool preempted; |
d657a98e | 321 | struct kvm_vcpu_arch arch; |
45b5939e | 322 | struct dentry *debugfs_dentry; |
d657a98e ZX |
323 | }; |
324 | ||
6b7e2d09 XG |
325 | static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu) |
326 | { | |
cde9af6e AJ |
327 | /* |
328 | * The memory barrier ensures a previous write to vcpu->requests cannot | |
329 | * be reordered with the read of vcpu->mode. It pairs with the general | |
330 | * memory barrier following the write of vcpu->mode in VCPU RUN. | |
331 | */ | |
332 | smp_mb__before_atomic(); | |
6b7e2d09 XG |
333 | return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE); |
334 | } | |
335 | ||
660c22c4 TY |
336 | /* |
337 | * Some of the bitops functions do not support too long bitmaps. | |
338 | * This number must be determined not to exceed such limits. | |
339 | */ | |
340 | #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1) | |
341 | ||
6aa8b732 AK |
342 | struct kvm_memory_slot { |
343 | gfn_t base_gfn; | |
344 | unsigned long npages; | |
6aa8b732 | 345 | unsigned long *dirty_bitmap; |
db3fe4eb | 346 | struct kvm_arch_memory_slot arch; |
8a7ae055 | 347 | unsigned long userspace_addr; |
6104f472 | 348 | u32 flags; |
1e702d9a | 349 | short id; |
6aa8b732 AK |
350 | }; |
351 | ||
87bf6e7d TY |
352 | static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot) |
353 | { | |
354 | return ALIGN(memslot->npages, BITS_PER_LONG) / 8; | |
355 | } | |
356 | ||
03133347 CI |
357 | static inline unsigned long *kvm_second_dirty_bitmap(struct kvm_memory_slot *memslot) |
358 | { | |
359 | unsigned long len = kvm_dirty_bitmap_bytes(memslot); | |
360 | ||
361 | return memslot->dirty_bitmap + len / sizeof(*memslot->dirty_bitmap); | |
362 | } | |
363 | ||
84223598 CH |
364 | struct kvm_s390_adapter_int { |
365 | u64 ind_addr; | |
366 | u64 summary_addr; | |
367 | u64 ind_offset; | |
368 | u32 summary_offset; | |
369 | u32 adapter_id; | |
370 | }; | |
371 | ||
5c919412 AS |
372 | struct kvm_hv_sint { |
373 | u32 vcpu; | |
374 | u32 sint; | |
375 | }; | |
376 | ||
399ec807 AK |
377 | struct kvm_kernel_irq_routing_entry { |
378 | u32 gsi; | |
5116d8f6 | 379 | u32 type; |
4925663a | 380 | int (*set)(struct kvm_kernel_irq_routing_entry *e, |
aa2fbe6d YZ |
381 | struct kvm *kvm, int irq_source_id, int level, |
382 | bool line_status); | |
399ec807 AK |
383 | union { |
384 | struct { | |
385 | unsigned irqchip; | |
386 | unsigned pin; | |
387 | } irqchip; | |
0455e72c EA |
388 | struct { |
389 | u32 address_lo; | |
390 | u32 address_hi; | |
391 | u32 data; | |
392 | u32 flags; | |
393 | u32 devid; | |
394 | } msi; | |
84223598 | 395 | struct kvm_s390_adapter_int adapter; |
5c919412 | 396 | struct kvm_hv_sint hv_sint; |
399ec807 | 397 | }; |
46e624b9 GN |
398 | struct hlist_node link; |
399 | }; | |
400 | ||
b053b2ae SR |
401 | #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING |
402 | struct kvm_irq_routing_table { | |
403 | int chip[KVM_NR_IRQCHIPS][KVM_IRQCHIP_NUM_PINS]; | |
404 | u32 nr_rt_entries; | |
405 | /* | |
406 | * Array indexed by gsi. Each entry contains list of irq chips | |
407 | * the gsi is connected to. | |
408 | */ | |
409 | struct hlist_head map[0]; | |
410 | }; | |
411 | #endif | |
412 | ||
0743247f AW |
413 | #ifndef KVM_PRIVATE_MEM_SLOTS |
414 | #define KVM_PRIVATE_MEM_SLOTS 0 | |
415 | #endif | |
416 | ||
93a5cef0 | 417 | #ifndef KVM_MEM_SLOTS_NUM |
bbacc0c1 | 418 | #define KVM_MEM_SLOTS_NUM (KVM_USER_MEM_SLOTS + KVM_PRIVATE_MEM_SLOTS) |
93a5cef0 XG |
419 | #endif |
420 | ||
f481b069 PB |
421 | #ifndef __KVM_VCPU_MULTIPLE_ADDRESS_SPACE |
422 | static inline int kvm_arch_vcpu_memslots_id(struct kvm_vcpu *vcpu) | |
423 | { | |
424 | return 0; | |
425 | } | |
426 | #endif | |
427 | ||
bf3e05bc XG |
428 | /* |
429 | * Note: | |
430 | * memslots are not sorted by id anymore, please use id_to_memslot() | |
431 | * to get the memslot by its id. | |
432 | */ | |
46a26bf5 | 433 | struct kvm_memslots { |
49c7754c | 434 | u64 generation; |
93a5cef0 | 435 | struct kvm_memory_slot memslots[KVM_MEM_SLOTS_NUM]; |
f85e2cb5 | 436 | /* The mapping table from slot id to the index in memslots[]. */ |
1e702d9a | 437 | short id_to_index[KVM_MEM_SLOTS_NUM]; |
d4ae84a0 | 438 | atomic_t lru_slot; |
9c1a5d38 | 439 | int used_slots; |
46a26bf5 MT |
440 | }; |
441 | ||
6aa8b732 | 442 | struct kvm { |
aaee2c94 | 443 | spinlock_t mmu_lock; |
79fac95e | 444 | struct mutex slots_lock; |
6d4e4c4f | 445 | struct mm_struct *mm; /* userspace tied to this vm */ |
a80cf7b5 | 446 | struct kvm_memslots __rcu *memslots[KVM_ADDRESS_SPACE_NUM]; |
fb3f0f51 | 447 | struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; |
6c7caebc PB |
448 | |
449 | /* | |
450 | * created_vcpus is protected by kvm->lock, and is incremented | |
451 | * at the beginning of KVM_CREATE_VCPU. online_vcpus is only | |
452 | * incremented after storing the kvm_vcpu pointer in vcpus, | |
453 | * and is accessed atomically. | |
454 | */ | |
73880c80 | 455 | atomic_t online_vcpus; |
6c7caebc | 456 | int created_vcpus; |
217ece61 | 457 | int last_boosted_vcpu; |
133de902 | 458 | struct list_head vm_list; |
60eead79 | 459 | struct mutex lock; |
4a12f951 | 460 | struct kvm_io_bus __rcu *buses[KVM_NR_BUSES]; |
721eecbf GH |
461 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
462 | struct { | |
463 | spinlock_t lock; | |
464 | struct list_head items; | |
7a84428a AW |
465 | struct list_head resampler_list; |
466 | struct mutex resampler_lock; | |
721eecbf | 467 | } irqfds; |
d34e6b17 | 468 | struct list_head ioeventfds; |
721eecbf | 469 | #endif |
ba1389b7 | 470 | struct kvm_vm_stat stat; |
d69fb81f | 471 | struct kvm_arch arch; |
e3736c3e | 472 | refcount_t users_count; |
4b4357e0 | 473 | #ifdef CONFIG_KVM_MMIO |
5f94c174 | 474 | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; |
2b3c246a SL |
475 | spinlock_t ring_lock; |
476 | struct list_head coalesced_zones; | |
5f94c174 | 477 | #endif |
e930bffe | 478 | |
60eead79 | 479 | struct mutex irq_lock; |
75858a84 | 480 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 | 481 | /* |
9957c86d | 482 | * Update side is protected by irq_lock. |
bd2b53b2 | 483 | */ |
4b6a2872 | 484 | struct kvm_irq_routing_table __rcu *irq_routing; |
c77dcacb PB |
485 | #endif |
486 | #ifdef CONFIG_HAVE_KVM_IRQFD | |
136bdfee | 487 | struct hlist_head irq_ack_notifier_list; |
75858a84 AK |
488 | #endif |
489 | ||
36c1ed82 | 490 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
e930bffe AA |
491 | struct mmu_notifier mmu_notifier; |
492 | unsigned long mmu_notifier_seq; | |
493 | long mmu_notifier_count; | |
494 | #endif | |
a086f6a1 | 495 | long tlbs_dirty; |
07f0a7bd | 496 | struct list_head devices; |
2a31b9db | 497 | bool manual_dirty_log_protect; |
536a6f88 JF |
498 | struct dentry *debugfs_dentry; |
499 | struct kvm_stat_data **debugfs_stat_data; | |
6ade8694 PM |
500 | struct srcu_struct srcu; |
501 | struct srcu_struct irq_srcu; | |
fdeaf7e3 | 502 | pid_t userspace_pid; |
6aa8b732 AK |
503 | }; |
504 | ||
a737f256 CD |
505 | #define kvm_err(fmt, ...) \ |
506 | pr_err("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
507 | #define kvm_info(fmt, ...) \ | |
508 | pr_info("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
509 | #define kvm_debug(fmt, ...) \ | |
510 | pr_debug("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
ae0f5499 BD |
511 | #define kvm_debug_ratelimited(fmt, ...) \ |
512 | pr_debug_ratelimited("kvm [%i]: " fmt, task_pid_nr(current), \ | |
513 | ## __VA_ARGS__) | |
a737f256 CD |
514 | #define kvm_pr_unimpl(fmt, ...) \ |
515 | pr_err_ratelimited("kvm [%i]: " fmt, \ | |
516 | task_tgid_nr(current), ## __VA_ARGS__) | |
f0242478 | 517 | |
a737f256 CD |
518 | /* The guest did something we don't support. */ |
519 | #define vcpu_unimpl(vcpu, fmt, ...) \ | |
671d9ab3 BP |
520 | kvm_pr_unimpl("vcpu%i, guest rIP: 0x%lx " fmt, \ |
521 | (vcpu)->vcpu_id, kvm_rip_read(vcpu), ## __VA_ARGS__) | |
6aa8b732 | 522 | |
ee86dbc6 AS |
523 | #define vcpu_debug(vcpu, fmt, ...) \ |
524 | kvm_debug("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__) | |
ae0f5499 BD |
525 | #define vcpu_debug_ratelimited(vcpu, fmt, ...) \ |
526 | kvm_debug_ratelimited("vcpu%i " fmt, (vcpu)->vcpu_id, \ | |
527 | ## __VA_ARGS__) | |
765eaa0f AS |
528 | #define vcpu_err(vcpu, fmt, ...) \ |
529 | kvm_err("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__) | |
ee86dbc6 | 530 | |
4a12f951 CB |
531 | static inline struct kvm_io_bus *kvm_get_bus(struct kvm *kvm, enum kvm_bus idx) |
532 | { | |
533 | return srcu_dereference_check(kvm->buses[idx], &kvm->srcu, | |
3898da94 PB |
534 | lockdep_is_held(&kvm->slots_lock) || |
535 | !refcount_read(&kvm->users_count)); | |
4a12f951 CB |
536 | } |
537 | ||
988a2cae GN |
538 | static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i) |
539 | { | |
1d487e9b PB |
540 | int num_vcpus = atomic_read(&kvm->online_vcpus); |
541 | i = array_index_nospec(i, num_vcpus); | |
542 | ||
543 | /* Pairs with smp_wmb() in kvm_vm_ioctl_create_vcpu. */ | |
988a2cae GN |
544 | smp_rmb(); |
545 | return kvm->vcpus[i]; | |
546 | } | |
547 | ||
548 | #define kvm_for_each_vcpu(idx, vcpup, kvm) \ | |
b42fc3cb JM |
549 | for (idx = 0; \ |
550 | idx < atomic_read(&kvm->online_vcpus) && \ | |
551 | (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \ | |
552 | idx++) | |
988a2cae | 553 | |
db27a7a3 DH |
554 | static inline struct kvm_vcpu *kvm_get_vcpu_by_id(struct kvm *kvm, int id) |
555 | { | |
9b9e3fc4 | 556 | struct kvm_vcpu *vcpu = NULL; |
db27a7a3 DH |
557 | int i; |
558 | ||
9b9e3fc4 | 559 | if (id < 0) |
c896939f | 560 | return NULL; |
9b9e3fc4 GK |
561 | if (id < KVM_MAX_VCPUS) |
562 | vcpu = kvm_get_vcpu(kvm, id); | |
c896939f DH |
563 | if (vcpu && vcpu->vcpu_id == id) |
564 | return vcpu; | |
db27a7a3 DH |
565 | kvm_for_each_vcpu(i, vcpu, kvm) |
566 | if (vcpu->vcpu_id == id) | |
567 | return vcpu; | |
568 | return NULL; | |
569 | } | |
570 | ||
497d72d8 CD |
571 | static inline int kvm_vcpu_get_idx(struct kvm_vcpu *vcpu) |
572 | { | |
573 | struct kvm_vcpu *tmp; | |
574 | int idx; | |
575 | ||
576 | kvm_for_each_vcpu(idx, tmp, vcpu->kvm) | |
577 | if (tmp == vcpu) | |
578 | return idx; | |
579 | BUG(); | |
580 | } | |
581 | ||
be6ba0f0 XG |
582 | #define kvm_for_each_memslot(memslot, slots) \ |
583 | for (memslot = &slots->memslots[0]; \ | |
bf3e05bc XG |
584 | memslot < slots->memslots + KVM_MEM_SLOTS_NUM && memslot->npages;\ |
585 | memslot++) | |
be6ba0f0 | 586 | |
fb3f0f51 RR |
587 | int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id); |
588 | void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); | |
589 | ||
ec7660cc | 590 | void vcpu_load(struct kvm_vcpu *vcpu); |
313a3dc7 CO |
591 | void vcpu_put(struct kvm_vcpu *vcpu); |
592 | ||
6ef768fa | 593 | #ifdef __KVM_HAVE_IOAPIC |
993225ad | 594 | void kvm_arch_post_irq_ack_notifier_list_update(struct kvm *kvm); |
abdb080f | 595 | void kvm_arch_post_irq_routing_update(struct kvm *kvm); |
6ef768fa | 596 | #else |
993225ad | 597 | static inline void kvm_arch_post_irq_ack_notifier_list_update(struct kvm *kvm) |
6ef768fa PB |
598 | { |
599 | } | |
abdb080f | 600 | static inline void kvm_arch_post_irq_routing_update(struct kvm *kvm) |
b053b2ae SR |
601 | { |
602 | } | |
6ef768fa PB |
603 | #endif |
604 | ||
297e2105 | 605 | #ifdef CONFIG_HAVE_KVM_IRQFD |
a0f155e9 CH |
606 | int kvm_irqfd_init(void); |
607 | void kvm_irqfd_exit(void); | |
608 | #else | |
609 | static inline int kvm_irqfd_init(void) | |
610 | { | |
611 | return 0; | |
612 | } | |
613 | ||
614 | static inline void kvm_irqfd_exit(void) | |
615 | { | |
616 | } | |
617 | #endif | |
0ee75bea | 618 | int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, |
c16f862d | 619 | struct module *module); |
cb498ea2 | 620 | void kvm_exit(void); |
6aa8b732 | 621 | |
d39f13b0 IE |
622 | void kvm_get_kvm(struct kvm *kvm); |
623 | void kvm_put_kvm(struct kvm *kvm); | |
624 | ||
f481b069 | 625 | static inline struct kvm_memslots *__kvm_memslots(struct kvm *kvm, int as_id) |
90d83dc3 | 626 | { |
1d487e9b | 627 | as_id = array_index_nospec(as_id, KVM_ADDRESS_SPACE_NUM); |
7e988b10 | 628 | return srcu_dereference_check(kvm->memslots[as_id], &kvm->srcu, |
3898da94 PB |
629 | lockdep_is_held(&kvm->slots_lock) || |
630 | !refcount_read(&kvm->users_count)); | |
90d83dc3 LJ |
631 | } |
632 | ||
f481b069 PB |
633 | static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm) |
634 | { | |
635 | return __kvm_memslots(kvm, 0); | |
636 | } | |
637 | ||
8e73485c PB |
638 | static inline struct kvm_memslots *kvm_vcpu_memslots(struct kvm_vcpu *vcpu) |
639 | { | |
f481b069 PB |
640 | int as_id = kvm_arch_vcpu_memslots_id(vcpu); |
641 | ||
642 | return __kvm_memslots(vcpu->kvm, as_id); | |
8e73485c PB |
643 | } |
644 | ||
28a37544 XG |
645 | static inline struct kvm_memory_slot * |
646 | id_to_memslot(struct kvm_memslots *slots, int id) | |
647 | { | |
f85e2cb5 XG |
648 | int index = slots->id_to_index[id]; |
649 | struct kvm_memory_slot *slot; | |
bf3e05bc | 650 | |
f85e2cb5 | 651 | slot = &slots->memslots[index]; |
bf3e05bc | 652 | |
f85e2cb5 XG |
653 | WARN_ON(slot->id != id); |
654 | return slot; | |
28a37544 XG |
655 | } |
656 | ||
74d0727c TY |
657 | /* |
658 | * KVM_SET_USER_MEMORY_REGION ioctl allows the following operations: | |
659 | * - create a new memory slot | |
660 | * - delete an existing memory slot | |
661 | * - modify an existing memory slot | |
662 | * -- move it in the guest physical memory space | |
663 | * -- just change its flags | |
664 | * | |
665 | * Since flags can be changed by some of these operations, the following | |
666 | * differentiation is the best we can do for __kvm_set_memory_region(): | |
667 | */ | |
668 | enum kvm_mr_change { | |
669 | KVM_MR_CREATE, | |
670 | KVM_MR_DELETE, | |
671 | KVM_MR_MOVE, | |
672 | KVM_MR_FLAGS_ONLY, | |
673 | }; | |
674 | ||
210c7c4d | 675 | int kvm_set_memory_region(struct kvm *kvm, |
09170a49 | 676 | const struct kvm_userspace_memory_region *mem); |
f78e0e2e | 677 | int __kvm_set_memory_region(struct kvm *kvm, |
09170a49 | 678 | const struct kvm_userspace_memory_region *mem); |
5587027c | 679 | void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free, |
db3fe4eb | 680 | struct kvm_memory_slot *dont); |
5587027c AK |
681 | int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, |
682 | unsigned long npages); | |
15248258 | 683 | void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen); |
f7784b8e MT |
684 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
685 | struct kvm_memory_slot *memslot, | |
09170a49 | 686 | const struct kvm_userspace_memory_region *mem, |
7b6195a9 | 687 | enum kvm_mr_change change); |
f7784b8e | 688 | void kvm_arch_commit_memory_region(struct kvm *kvm, |
09170a49 | 689 | const struct kvm_userspace_memory_region *mem, |
8482644a | 690 | const struct kvm_memory_slot *old, |
f36f3f28 | 691 | const struct kvm_memory_slot *new, |
8482644a | 692 | enum kvm_mr_change change); |
db3fe4eb | 693 | bool kvm_largepages_enabled(void); |
54dee993 | 694 | void kvm_disable_largepages(void); |
2df72e9b MT |
695 | /* flush all memory translations */ |
696 | void kvm_arch_flush_shadow_all(struct kvm *kvm); | |
697 | /* flush memory translations pointing to 'slot' */ | |
698 | void kvm_arch_flush_shadow_memslot(struct kvm *kvm, | |
699 | struct kvm_memory_slot *slot); | |
a983fb23 | 700 | |
d9ef13c2 PB |
701 | int gfn_to_page_many_atomic(struct kvm_memory_slot *slot, gfn_t gfn, |
702 | struct page **pages, int nr_pages); | |
48987781 | 703 | |
954bbbc2 | 704 | struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); |
05da4558 | 705 | unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn); |
ba6a3541 | 706 | unsigned long gfn_to_hva_prot(struct kvm *kvm, gfn_t gfn, bool *writable); |
4d8b81ab | 707 | unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
64d83126 CD |
708 | unsigned long gfn_to_hva_memslot_prot(struct kvm_memory_slot *slot, gfn_t gfn, |
709 | bool *writable); | |
b4231d61 IE |
710 | void kvm_release_page_clean(struct page *page); |
711 | void kvm_release_page_dirty(struct page *page); | |
35149e21 AL |
712 | void kvm_set_page_accessed(struct page *page); |
713 | ||
ba049e93 DW |
714 | kvm_pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn); |
715 | kvm_pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn); | |
716 | kvm_pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault, | |
612819c3 | 717 | bool *writable); |
ba049e93 DW |
718 | kvm_pfn_t gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
719 | kvm_pfn_t gfn_to_pfn_memslot_atomic(struct kvm_memory_slot *slot, gfn_t gfn); | |
720 | kvm_pfn_t __gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn, | |
721 | bool atomic, bool *async, bool write_fault, | |
722 | bool *writable); | |
037d92dc | 723 | |
ba049e93 | 724 | void kvm_release_pfn_clean(kvm_pfn_t pfn); |
f7a6509f | 725 | void kvm_release_pfn_dirty(kvm_pfn_t pfn); |
ba049e93 DW |
726 | void kvm_set_pfn_dirty(kvm_pfn_t pfn); |
727 | void kvm_set_pfn_accessed(kvm_pfn_t pfn); | |
728 | void kvm_get_pfn(kvm_pfn_t pfn); | |
35149e21 | 729 | |
195aefde IE |
730 | int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, |
731 | int len); | |
7ec54588 MT |
732 | int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data, |
733 | unsigned long len); | |
195aefde | 734 | int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); |
4e335d9e PB |
735 | int kvm_read_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
736 | void *data, unsigned long len); | |
195aefde IE |
737 | int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, |
738 | int offset, int len); | |
739 | int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, | |
740 | unsigned long len); | |
4e335d9e PB |
741 | int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
742 | void *data, unsigned long len); | |
743 | int kvm_write_guest_offset_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, | |
7a86dab8 JM |
744 | void *data, unsigned int offset, |
745 | unsigned long len); | |
4e335d9e PB |
746 | int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
747 | gpa_t gpa, unsigned long len); | |
195aefde IE |
748 | int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); |
749 | int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); | |
6aa8b732 | 750 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); |
33e94154 | 751 | bool kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); |
8f0b1ab6 | 752 | unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn); |
6aa8b732 AK |
753 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); |
754 | ||
8e73485c PB |
755 | struct kvm_memslots *kvm_vcpu_memslots(struct kvm_vcpu *vcpu); |
756 | struct kvm_memory_slot *kvm_vcpu_gfn_to_memslot(struct kvm_vcpu *vcpu, gfn_t gfn); | |
ba049e93 DW |
757 | kvm_pfn_t kvm_vcpu_gfn_to_pfn_atomic(struct kvm_vcpu *vcpu, gfn_t gfn); |
758 | kvm_pfn_t kvm_vcpu_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn); | |
e45adf66 | 759 | int kvm_vcpu_map(struct kvm_vcpu *vcpu, gpa_t gpa, struct kvm_host_map *map); |
8e73485c | 760 | struct page *kvm_vcpu_gfn_to_page(struct kvm_vcpu *vcpu, gfn_t gfn); |
e45adf66 | 761 | void kvm_vcpu_unmap(struct kvm_vcpu *vcpu, struct kvm_host_map *map, bool dirty); |
8e73485c PB |
762 | unsigned long kvm_vcpu_gfn_to_hva(struct kvm_vcpu *vcpu, gfn_t gfn); |
763 | unsigned long kvm_vcpu_gfn_to_hva_prot(struct kvm_vcpu *vcpu, gfn_t gfn, bool *writable); | |
764 | int kvm_vcpu_read_guest_page(struct kvm_vcpu *vcpu, gfn_t gfn, void *data, int offset, | |
765 | int len); | |
766 | int kvm_vcpu_read_guest_atomic(struct kvm_vcpu *vcpu, gpa_t gpa, void *data, | |
767 | unsigned long len); | |
768 | int kvm_vcpu_read_guest(struct kvm_vcpu *vcpu, gpa_t gpa, void *data, | |
769 | unsigned long len); | |
770 | int kvm_vcpu_write_guest_page(struct kvm_vcpu *vcpu, gfn_t gfn, const void *data, | |
771 | int offset, int len); | |
772 | int kvm_vcpu_write_guest(struct kvm_vcpu *vcpu, gpa_t gpa, const void *data, | |
773 | unsigned long len); | |
774 | void kvm_vcpu_mark_page_dirty(struct kvm_vcpu *vcpu, gfn_t gfn); | |
775 | ||
20b7035c JS |
776 | void kvm_sigset_activate(struct kvm_vcpu *vcpu); |
777 | void kvm_sigset_deactivate(struct kvm_vcpu *vcpu); | |
778 | ||
8776e519 | 779 | void kvm_vcpu_block(struct kvm_vcpu *vcpu); |
3217f7c2 CD |
780 | void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu); |
781 | void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu); | |
178f02ff | 782 | bool kvm_vcpu_wake_up(struct kvm_vcpu *vcpu); |
b6d33834 | 783 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
fa93384f | 784 | int kvm_vcpu_yield_to(struct kvm_vcpu *target); |
199b5763 | 785 | void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu, bool usermode_vcpu_not_eligible); |
a4ee1ca4 | 786 | |
d9e368d6 | 787 | void kvm_flush_remote_tlbs(struct kvm *kvm); |
2e53d63a | 788 | void kvm_reload_remote_mmus(struct kvm *kvm); |
7053df4e VK |
789 | |
790 | bool kvm_make_vcpus_request_mask(struct kvm *kvm, unsigned int req, | |
791 | unsigned long *vcpu_bitmap, cpumask_var_t tmp); | |
445b8236 | 792 | bool kvm_make_all_cpus_request(struct kvm *kvm, unsigned int req); |
6aa8b732 | 793 | |
043405e1 CO |
794 | long kvm_arch_dev_ioctl(struct file *filp, |
795 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 CO |
796 | long kvm_arch_vcpu_ioctl(struct file *filp, |
797 | unsigned int ioctl, unsigned long arg); | |
1499fa80 | 798 | vm_fault_t kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf); |
018d00d2 | 799 | |
784aa3d7 | 800 | int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext); |
018d00d2 | 801 | |
5bb064dc ZX |
802 | int kvm_get_dirty_log(struct kvm *kvm, |
803 | struct kvm_dirty_log *log, int *is_dirty); | |
ba0513b5 MS |
804 | |
805 | int kvm_get_dirty_log_protect(struct kvm *kvm, | |
8fe65a82 | 806 | struct kvm_dirty_log *log, bool *flush); |
2a31b9db PB |
807 | int kvm_clear_dirty_log_protect(struct kvm *kvm, |
808 | struct kvm_clear_dirty_log *log, bool *flush); | |
ba0513b5 | 809 | |
3b0f1d01 | 810 | void kvm_arch_mmu_enable_log_dirty_pt_masked(struct kvm *kvm, |
ba0513b5 MS |
811 | struct kvm_memory_slot *slot, |
812 | gfn_t gfn_offset, | |
813 | unsigned long mask); | |
814 | ||
5bb064dc ZX |
815 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, |
816 | struct kvm_dirty_log *log); | |
2a31b9db PB |
817 | int kvm_vm_ioctl_clear_dirty_log(struct kvm *kvm, |
818 | struct kvm_clear_dirty_log *log); | |
5bb064dc | 819 | |
aa2fbe6d YZ |
820 | int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_level, |
821 | bool line_status); | |
e5d83c74 PB |
822 | int kvm_vm_ioctl_enable_cap(struct kvm *kvm, |
823 | struct kvm_enable_cap *cap); | |
1fe779f8 CO |
824 | long kvm_arch_vm_ioctl(struct file *filp, |
825 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 | 826 | |
d0752060 HB |
827 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); |
828 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); | |
829 | ||
8b006791 ZX |
830 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, |
831 | struct kvm_translation *tr); | |
832 | ||
b6c7a5dc HB |
833 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); |
834 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); | |
835 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
836 | struct kvm_sregs *sregs); | |
837 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
838 | struct kvm_sregs *sregs); | |
62d9f0db MT |
839 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
840 | struct kvm_mp_state *mp_state); | |
841 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
842 | struct kvm_mp_state *mp_state); | |
d0bfb940 JK |
843 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
844 | struct kvm_guest_debug *dbg); | |
b6c7a5dc HB |
845 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); |
846 | ||
f8c16bba ZX |
847 | int kvm_arch_init(void *opaque); |
848 | void kvm_arch_exit(void); | |
043405e1 | 849 | |
e9b11c17 ZX |
850 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); |
851 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu); | |
852 | ||
e790d9ef RK |
853 | void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu); |
854 | ||
e9b11c17 ZX |
855 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu); |
856 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
857 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); | |
858 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); | |
26e5215f | 859 | int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu); |
31928aa5 | 860 | void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu); |
d40ccc62 | 861 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu); |
e9b11c17 | 862 | |
235539b4 LC |
863 | bool kvm_arch_has_vcpu_debugfs(void); |
864 | int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu); | |
865 | ||
13a34e06 RK |
866 | int kvm_arch_hardware_enable(void); |
867 | void kvm_arch_hardware_disable(void); | |
e9b11c17 ZX |
868 | int kvm_arch_hardware_setup(void); |
869 | void kvm_arch_hardware_unsetup(void); | |
870 | void kvm_arch_check_processor_compat(void *rtn); | |
1d737c8a | 871 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu); |
199b5763 | 872 | bool kvm_arch_vcpu_in_kernel(struct kvm_vcpu *vcpu); |
b6d33834 | 873 | int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu); |
e9b11c17 | 874 | |
d89f5eff | 875 | #ifndef __KVM_HAVE_ARCH_VM_ALLOC |
d1e5b0e9 MO |
876 | /* |
877 | * All architectures that want to use vzalloc currently also | |
878 | * need their own kvm_arch_alloc_vm implementation. | |
879 | */ | |
d89f5eff JK |
880 | static inline struct kvm *kvm_arch_alloc_vm(void) |
881 | { | |
882 | return kzalloc(sizeof(struct kvm), GFP_KERNEL); | |
883 | } | |
884 | ||
885 | static inline void kvm_arch_free_vm(struct kvm *kvm) | |
886 | { | |
887 | kfree(kvm); | |
888 | } | |
889 | #endif | |
890 | ||
b08660e5 TL |
891 | #ifndef __KVM_HAVE_ARCH_FLUSH_REMOTE_TLB |
892 | static inline int kvm_arch_flush_remote_tlb(struct kvm *kvm) | |
893 | { | |
894 | return -ENOTSUPP; | |
895 | } | |
896 | #endif | |
897 | ||
e0f0bbc5 AW |
898 | #ifdef __KVM_HAVE_ARCH_NONCOHERENT_DMA |
899 | void kvm_arch_register_noncoherent_dma(struct kvm *kvm); | |
900 | void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm); | |
901 | bool kvm_arch_has_noncoherent_dma(struct kvm *kvm); | |
902 | #else | |
903 | static inline void kvm_arch_register_noncoherent_dma(struct kvm *kvm) | |
904 | { | |
905 | } | |
906 | ||
907 | static inline void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm) | |
908 | { | |
909 | } | |
910 | ||
911 | static inline bool kvm_arch_has_noncoherent_dma(struct kvm *kvm) | |
912 | { | |
913 | return false; | |
914 | } | |
915 | #endif | |
5544eb9b PB |
916 | #ifdef __KVM_HAVE_ARCH_ASSIGNED_DEVICE |
917 | void kvm_arch_start_assignment(struct kvm *kvm); | |
918 | void kvm_arch_end_assignment(struct kvm *kvm); | |
919 | bool kvm_arch_has_assigned_device(struct kvm *kvm); | |
920 | #else | |
921 | static inline void kvm_arch_start_assignment(struct kvm *kvm) | |
922 | { | |
923 | } | |
924 | ||
925 | static inline void kvm_arch_end_assignment(struct kvm *kvm) | |
926 | { | |
927 | } | |
928 | ||
929 | static inline bool kvm_arch_has_assigned_device(struct kvm *kvm) | |
930 | { | |
931 | return false; | |
932 | } | |
933 | #endif | |
e0f0bbc5 | 934 | |
8577370f | 935 | static inline struct swait_queue_head *kvm_arch_vcpu_wq(struct kvm_vcpu *vcpu) |
b6d33834 | 936 | { |
2246f8b5 AG |
937 | #ifdef __KVM_HAVE_ARCH_WQP |
938 | return vcpu->arch.wqp; | |
939 | #else | |
b6d33834 | 940 | return &vcpu->wq; |
b6d33834 | 941 | #endif |
2246f8b5 | 942 | } |
b6d33834 | 943 | |
01c94e64 EA |
944 | #ifdef __KVM_HAVE_ARCH_INTC_INITIALIZED |
945 | /* | |
946 | * returns true if the virtual interrupt controller is initialized and | |
947 | * ready to accept virtual IRQ. On some architectures the virtual interrupt | |
948 | * controller is dynamically instantiated and this is not always true. | |
949 | */ | |
950 | bool kvm_arch_intc_initialized(struct kvm *kvm); | |
951 | #else | |
952 | static inline bool kvm_arch_intc_initialized(struct kvm *kvm) | |
953 | { | |
954 | return true; | |
955 | } | |
956 | #endif | |
957 | ||
e08b9637 | 958 | int kvm_arch_init_vm(struct kvm *kvm, unsigned long type); |
d19a9cd2 | 959 | void kvm_arch_destroy_vm(struct kvm *kvm); |
ad8ba2cd | 960 | void kvm_arch_sync_events(struct kvm *kvm); |
e9b11c17 | 961 | |
3d80840d | 962 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu); |
5736199a | 963 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
682c59a3 | 964 | |
ba049e93 | 965 | bool kvm_is_reserved_pfn(kvm_pfn_t pfn); |
c77fb9dc | 966 | |
62c476c7 BAY |
967 | struct kvm_irq_ack_notifier { |
968 | struct hlist_node link; | |
969 | unsigned gsi; | |
970 | void (*irq_acked)(struct kvm_irq_ack_notifier *kian); | |
971 | }; | |
972 | ||
9957c86d PM |
973 | int kvm_irq_map_gsi(struct kvm *kvm, |
974 | struct kvm_kernel_irq_routing_entry *entries, int gsi); | |
975 | int kvm_irq_map_chip_pin(struct kvm *kvm, unsigned irqchip, unsigned pin); | |
8ba918d4 | 976 | |
aa2fbe6d YZ |
977 | int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level, |
978 | bool line_status); | |
bd2b53b2 | 979 | int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm, |
aa2fbe6d | 980 | int irq_source_id, int level, bool line_status); |
b97e6de9 PB |
981 | int kvm_arch_set_irq_inatomic(struct kvm_kernel_irq_routing_entry *e, |
982 | struct kvm *kvm, int irq_source_id, | |
983 | int level, bool line_status); | |
c7c9c56c | 984 | bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin); |
ba1aefcd | 985 | void kvm_notify_acked_gsi(struct kvm *kvm, int gsi); |
44882eed | 986 | void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin); |
3de42dc0 XZ |
987 | void kvm_register_irq_ack_notifier(struct kvm *kvm, |
988 | struct kvm_irq_ack_notifier *kian); | |
fa40a821 MT |
989 | void kvm_unregister_irq_ack_notifier(struct kvm *kvm, |
990 | struct kvm_irq_ack_notifier *kian); | |
5550af4d SY |
991 | int kvm_request_irq_source_id(struct kvm *kvm); |
992 | void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id); | |
62c476c7 | 993 | |
9d4cba7f PM |
994 | /* |
995 | * search_memslots() and __gfn_to_memslot() are here because they are | |
996 | * used in non-modular code in arch/powerpc/kvm/book3s_hv_rm_mmu.c. | |
997 | * gfn_to_memslot() itself isn't here as an inline because that would | |
998 | * bloat other code too much. | |
999 | */ | |
1000 | static inline struct kvm_memory_slot * | |
1001 | search_memslots(struct kvm_memslots *slots, gfn_t gfn) | |
1002 | { | |
9c1a5d38 | 1003 | int start = 0, end = slots->used_slots; |
d4ae84a0 | 1004 | int slot = atomic_read(&slots->lru_slot); |
9c1a5d38 IM |
1005 | struct kvm_memory_slot *memslots = slots->memslots; |
1006 | ||
1007 | if (gfn >= memslots[slot].base_gfn && | |
1008 | gfn < memslots[slot].base_gfn + memslots[slot].npages) | |
1009 | return &memslots[slot]; | |
1010 | ||
1011 | while (start < end) { | |
1012 | slot = start + (end - start) / 2; | |
1013 | ||
1014 | if (gfn >= memslots[slot].base_gfn) | |
1015 | end = slot; | |
1016 | else | |
1017 | start = slot + 1; | |
1018 | } | |
1019 | ||
1020 | if (gfn >= memslots[start].base_gfn && | |
1021 | gfn < memslots[start].base_gfn + memslots[start].npages) { | |
1022 | atomic_set(&slots->lru_slot, start); | |
1023 | return &memslots[start]; | |
1024 | } | |
9d4cba7f PM |
1025 | |
1026 | return NULL; | |
1027 | } | |
1028 | ||
1029 | static inline struct kvm_memory_slot * | |
1030 | __gfn_to_memslot(struct kvm_memslots *slots, gfn_t gfn) | |
1031 | { | |
1032 | return search_memslots(slots, gfn); | |
1033 | } | |
1034 | ||
66a03505 GS |
1035 | static inline unsigned long |
1036 | __gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn) | |
1037 | { | |
1038 | return slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE; | |
1039 | } | |
1040 | ||
0ee8dcb8 XG |
1041 | static inline int memslot_id(struct kvm *kvm, gfn_t gfn) |
1042 | { | |
1043 | return gfn_to_memslot(kvm, gfn)->id; | |
1044 | } | |
1045 | ||
d19a748b TY |
1046 | static inline gfn_t |
1047 | hva_to_gfn_memslot(unsigned long hva, struct kvm_memory_slot *slot) | |
887c08ac | 1048 | { |
d19a748b TY |
1049 | gfn_t gfn_offset = (hva - slot->userspace_addr) >> PAGE_SHIFT; |
1050 | ||
1051 | return slot->base_gfn + gfn_offset; | |
887c08ac XG |
1052 | } |
1053 | ||
1755fbcc AK |
1054 | static inline gpa_t gfn_to_gpa(gfn_t gfn) |
1055 | { | |
1056 | return (gpa_t)gfn << PAGE_SHIFT; | |
1057 | } | |
6aa8b732 | 1058 | |
c30a358d JR |
1059 | static inline gfn_t gpa_to_gfn(gpa_t gpa) |
1060 | { | |
1061 | return (gfn_t)(gpa >> PAGE_SHIFT); | |
1062 | } | |
1063 | ||
ba049e93 | 1064 | static inline hpa_t pfn_to_hpa(kvm_pfn_t pfn) |
62c476c7 BAY |
1065 | { |
1066 | return (hpa_t)pfn << PAGE_SHIFT; | |
1067 | } | |
1068 | ||
5e2f30b7 DH |
1069 | static inline struct page *kvm_vcpu_gpa_to_page(struct kvm_vcpu *vcpu, |
1070 | gpa_t gpa) | |
1071 | { | |
1072 | return kvm_vcpu_gfn_to_page(vcpu, gpa_to_gfn(gpa)); | |
1073 | } | |
1074 | ||
dfeec843 HC |
1075 | static inline bool kvm_is_error_gpa(struct kvm *kvm, gpa_t gpa) |
1076 | { | |
1077 | unsigned long hva = gfn_to_hva(kvm, gpa_to_gfn(gpa)); | |
1078 | ||
1079 | return kvm_is_error_hva(hva); | |
1080 | } | |
1081 | ||
ba1389b7 AK |
1082 | enum kvm_stat_kind { |
1083 | KVM_STAT_VM, | |
1084 | KVM_STAT_VCPU, | |
1085 | }; | |
1086 | ||
536a6f88 JF |
1087 | struct kvm_stat_data { |
1088 | int offset; | |
1089 | struct kvm *kvm; | |
1090 | }; | |
1091 | ||
417bc304 HB |
1092 | struct kvm_stats_debugfs_item { |
1093 | const char *name; | |
1094 | int offset; | |
ba1389b7 | 1095 | enum kvm_stat_kind kind; |
417bc304 HB |
1096 | }; |
1097 | extern struct kvm_stats_debugfs_item debugfs_entries[]; | |
76f7c879 | 1098 | extern struct dentry *kvm_debugfs_dir; |
d4c9ff2d | 1099 | |
36c1ed82 | 1100 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
8ca40a70 | 1101 | static inline int mmu_notifier_retry(struct kvm *kvm, unsigned long mmu_seq) |
e930bffe | 1102 | { |
8ca40a70 | 1103 | if (unlikely(kvm->mmu_notifier_count)) |
e930bffe AA |
1104 | return 1; |
1105 | /* | |
a355aa54 PM |
1106 | * Ensure the read of mmu_notifier_count happens before the read |
1107 | * of mmu_notifier_seq. This interacts with the smp_wmb() in | |
1108 | * mmu_notifier_invalidate_range_end to make sure that the caller | |
1109 | * either sees the old (non-zero) value of mmu_notifier_count or | |
1110 | * the new (incremented) value of mmu_notifier_seq. | |
1111 | * PowerPC Book3s HV KVM calls this under a per-page lock | |
1112 | * rather than under kvm->mmu_lock, for scalability, so | |
1113 | * can't rely on kvm->mmu_lock to keep things ordered. | |
e930bffe | 1114 | */ |
a355aa54 | 1115 | smp_rmb(); |
8ca40a70 | 1116 | if (kvm->mmu_notifier_seq != mmu_seq) |
e930bffe AA |
1117 | return 1; |
1118 | return 0; | |
1119 | } | |
1120 | #endif | |
1121 | ||
a725d56a | 1122 | #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING |
399ec807 | 1123 | |
ddc9cfb7 | 1124 | #define KVM_MAX_IRQ_ROUTES 4096 /* might need extension/rework in the future */ |
399ec807 | 1125 | |
5c0aea0e | 1126 | bool kvm_arch_can_set_irq_routing(struct kvm *kvm); |
399ec807 AK |
1127 | int kvm_set_irq_routing(struct kvm *kvm, |
1128 | const struct kvm_irq_routing_entry *entries, | |
1129 | unsigned nr, | |
1130 | unsigned flags); | |
c63cf538 RK |
1131 | int kvm_set_routing_entry(struct kvm *kvm, |
1132 | struct kvm_kernel_irq_routing_entry *e, | |
e8cde093 | 1133 | const struct kvm_irq_routing_entry *ue); |
399ec807 AK |
1134 | void kvm_free_irq_routing(struct kvm *kvm); |
1135 | ||
1136 | #else | |
1137 | ||
1138 | static inline void kvm_free_irq_routing(struct kvm *kvm) {} | |
1139 | ||
1140 | #endif | |
1141 | ||
297e2105 PM |
1142 | int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi); |
1143 | ||
721eecbf GH |
1144 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
1145 | ||
d34e6b17 | 1146 | void kvm_eventfd_init(struct kvm *kvm); |
914daba8 AG |
1147 | int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args); |
1148 | ||
297e2105 | 1149 | #ifdef CONFIG_HAVE_KVM_IRQFD |
d4db2935 | 1150 | int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args); |
721eecbf | 1151 | void kvm_irqfd_release(struct kvm *kvm); |
9957c86d | 1152 | void kvm_irq_routing_update(struct kvm *); |
914daba8 AG |
1153 | #else |
1154 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) | |
1155 | { | |
1156 | return -EINVAL; | |
1157 | } | |
1158 | ||
1159 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
1160 | #endif | |
721eecbf GH |
1161 | |
1162 | #else | |
1163 | ||
d34e6b17 | 1164 | static inline void kvm_eventfd_init(struct kvm *kvm) {} |
bd2b53b2 | 1165 | |
d4db2935 | 1166 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) |
721eecbf GH |
1167 | { |
1168 | return -EINVAL; | |
1169 | } | |
1170 | ||
1171 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
bd2b53b2 | 1172 | |
27923eb1 | 1173 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
9957c86d | 1174 | static inline void kvm_irq_routing_update(struct kvm *kvm) |
bd2b53b2 | 1175 | { |
bd2b53b2 | 1176 | } |
27923eb1 | 1177 | #endif |
bd2b53b2 | 1178 | |
d34e6b17 GH |
1179 | static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) |
1180 | { | |
1181 | return -ENOSYS; | |
1182 | } | |
721eecbf GH |
1183 | |
1184 | #endif /* CONFIG_HAVE_KVM_EVENTFD */ | |
1185 | ||
07646749 SO |
1186 | void kvm_arch_irq_routing_update(struct kvm *kvm); |
1187 | ||
a8eeb04a AK |
1188 | static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu) |
1189 | { | |
2e4682ba PB |
1190 | /* |
1191 | * Ensure the rest of the request is published to kvm_check_request's | |
1192 | * caller. Paired with the smp_mb__after_atomic in kvm_check_request. | |
1193 | */ | |
1194 | smp_wmb(); | |
86dafed5 | 1195 | set_bit(req & KVM_REQUEST_MASK, (void *)&vcpu->requests); |
a8eeb04a AK |
1196 | } |
1197 | ||
2fa6e1e1 RK |
1198 | static inline bool kvm_request_pending(struct kvm_vcpu *vcpu) |
1199 | { | |
1200 | return READ_ONCE(vcpu->requests); | |
1201 | } | |
1202 | ||
72875d8a RK |
1203 | static inline bool kvm_test_request(int req, struct kvm_vcpu *vcpu) |
1204 | { | |
86dafed5 | 1205 | return test_bit(req & KVM_REQUEST_MASK, (void *)&vcpu->requests); |
72875d8a RK |
1206 | } |
1207 | ||
1208 | static inline void kvm_clear_request(int req, struct kvm_vcpu *vcpu) | |
1209 | { | |
86dafed5 | 1210 | clear_bit(req & KVM_REQUEST_MASK, (void *)&vcpu->requests); |
72875d8a RK |
1211 | } |
1212 | ||
a8eeb04a AK |
1213 | static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu) |
1214 | { | |
72875d8a RK |
1215 | if (kvm_test_request(req, vcpu)) { |
1216 | kvm_clear_request(req, vcpu); | |
2e4682ba PB |
1217 | |
1218 | /* | |
1219 | * Ensure the rest of the request is visible to kvm_check_request's | |
1220 | * caller. Paired with the smp_wmb in kvm_make_request. | |
1221 | */ | |
1222 | smp_mb__after_atomic(); | |
0719837c AK |
1223 | return true; |
1224 | } else { | |
1225 | return false; | |
1226 | } | |
a8eeb04a AK |
1227 | } |
1228 | ||
8b415dcd GL |
1229 | extern bool kvm_rebooting; |
1230 | ||
ec76d819 SJS |
1231 | extern unsigned int halt_poll_ns; |
1232 | extern unsigned int halt_poll_ns_grow; | |
49113d36 | 1233 | extern unsigned int halt_poll_ns_grow_start; |
ec76d819 SJS |
1234 | extern unsigned int halt_poll_ns_shrink; |
1235 | ||
852b6d57 SW |
1236 | struct kvm_device { |
1237 | struct kvm_device_ops *ops; | |
1238 | struct kvm *kvm; | |
852b6d57 | 1239 | void *private; |
07f0a7bd | 1240 | struct list_head vm_node; |
852b6d57 SW |
1241 | }; |
1242 | ||
1243 | /* create, destroy, and name are mandatory */ | |
1244 | struct kvm_device_ops { | |
1245 | const char *name; | |
a28ebea2 CD |
1246 | |
1247 | /* | |
1248 | * create is called holding kvm->lock and any operations not suitable | |
1249 | * to do while holding the lock should be deferred to init (see | |
1250 | * below). | |
1251 | */ | |
852b6d57 SW |
1252 | int (*create)(struct kvm_device *dev, u32 type); |
1253 | ||
023e9fdd CD |
1254 | /* |
1255 | * init is called after create if create is successful and is called | |
1256 | * outside of holding kvm->lock. | |
1257 | */ | |
1258 | void (*init)(struct kvm_device *dev); | |
1259 | ||
852b6d57 SW |
1260 | /* |
1261 | * Destroy is responsible for freeing dev. | |
1262 | * | |
1263 | * Destroy may be called before or after destructors are called | |
1264 | * on emulated I/O regions, depending on whether a reference is | |
1265 | * held by a vcpu or other kvm component that gets destroyed | |
1266 | * after the emulated I/O. | |
1267 | */ | |
1268 | void (*destroy)(struct kvm_device *dev); | |
1269 | ||
2bde9b3e CLG |
1270 | /* |
1271 | * Release is an alternative method to free the device. It is | |
1272 | * called when the device file descriptor is closed. Once | |
1273 | * release is called, the destroy method will not be called | |
1274 | * anymore as the device is removed from the device list of | |
1275 | * the VM. kvm->lock is held. | |
1276 | */ | |
1277 | void (*release)(struct kvm_device *dev); | |
1278 | ||
852b6d57 SW |
1279 | int (*set_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); |
1280 | int (*get_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1281 | int (*has_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1282 | long (*ioctl)(struct kvm_device *dev, unsigned int ioctl, | |
1283 | unsigned long arg); | |
a1cd3f08 | 1284 | int (*mmap)(struct kvm_device *dev, struct vm_area_struct *vma); |
852b6d57 SW |
1285 | }; |
1286 | ||
1287 | void kvm_device_get(struct kvm_device *dev); | |
1288 | void kvm_device_put(struct kvm_device *dev); | |
1289 | struct kvm_device *kvm_device_from_filp(struct file *filp); | |
d60eacb0 | 1290 | int kvm_register_device_ops(struct kvm_device_ops *ops, u32 type); |
571ee1b6 | 1291 | void kvm_unregister_device_ops(u32 type); |
852b6d57 | 1292 | |
5df554ad | 1293 | extern struct kvm_device_ops kvm_mpic_ops; |
ea2f83a7 | 1294 | extern struct kvm_device_ops kvm_arm_vgic_v2_ops; |
a0675c25 | 1295 | extern struct kvm_device_ops kvm_arm_vgic_v3_ops; |
5df554ad | 1296 | |
4c088493 R |
1297 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
1298 | ||
1299 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
1300 | { | |
1301 | vcpu->spin_loop.in_spin_loop = val; | |
1302 | } | |
1303 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
1304 | { | |
1305 | vcpu->spin_loop.dy_eligible = val; | |
1306 | } | |
1307 | ||
1308 | #else /* !CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ | |
1309 | ||
1310 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
1311 | { | |
1312 | } | |
1313 | ||
1314 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
1315 | { | |
1316 | } | |
4c088493 | 1317 | #endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ |
1a02b270 EA |
1318 | |
1319 | #ifdef CONFIG_HAVE_KVM_IRQ_BYPASS | |
14717e20 | 1320 | bool kvm_arch_has_irq_bypass(void); |
1a02b270 EA |
1321 | int kvm_arch_irq_bypass_add_producer(struct irq_bypass_consumer *, |
1322 | struct irq_bypass_producer *); | |
1323 | void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer *, | |
1324 | struct irq_bypass_producer *); | |
1325 | void kvm_arch_irq_bypass_stop(struct irq_bypass_consumer *); | |
1326 | void kvm_arch_irq_bypass_start(struct irq_bypass_consumer *); | |
f70c20aa FW |
1327 | int kvm_arch_update_irqfd_routing(struct kvm *kvm, unsigned int host_irq, |
1328 | uint32_t guest_irq, bool set); | |
1a02b270 | 1329 | #endif /* CONFIG_HAVE_KVM_IRQ_BYPASS */ |
35181e86 | 1330 | |
3491caf2 CB |
1331 | #ifdef CONFIG_HAVE_KVM_INVALID_WAKEUPS |
1332 | /* If we wakeup during the poll time, was it a sucessful poll? */ | |
1333 | static inline bool vcpu_valid_wakeup(struct kvm_vcpu *vcpu) | |
1334 | { | |
1335 | return vcpu->valid_wakeup; | |
1336 | } | |
1337 | ||
1338 | #else | |
1339 | static inline bool vcpu_valid_wakeup(struct kvm_vcpu *vcpu) | |
1340 | { | |
1341 | return true; | |
1342 | } | |
1343 | #endif /* CONFIG_HAVE_KVM_INVALID_WAKEUPS */ | |
1344 | ||
cdd6ad3a CB |
1345 | #ifdef CONFIG_HAVE_KVM_NO_POLL |
1346 | /* Callback that tells if we must not poll */ | |
1347 | bool kvm_arch_no_poll(struct kvm_vcpu *vcpu); | |
1348 | #else | |
1349 | static inline bool kvm_arch_no_poll(struct kvm_vcpu *vcpu) | |
1350 | { | |
1351 | return false; | |
1352 | } | |
1353 | #endif /* CONFIG_HAVE_KVM_NO_POLL */ | |
1354 | ||
5cb0944c PB |
1355 | #ifdef CONFIG_HAVE_KVM_VCPU_ASYNC_IOCTL |
1356 | long kvm_arch_vcpu_async_ioctl(struct file *filp, | |
1357 | unsigned int ioctl, unsigned long arg); | |
1358 | #else | |
1359 | static inline long kvm_arch_vcpu_async_ioctl(struct file *filp, | |
1360 | unsigned int ioctl, | |
1361 | unsigned long arg) | |
1362 | { | |
1363 | return -ENOIOCTLCMD; | |
1364 | } | |
1365 | #endif /* CONFIG_HAVE_KVM_VCPU_ASYNC_IOCTL */ | |
1366 | ||
93065ac7 MH |
1367 | int kvm_arch_mmu_notifier_invalidate_range(struct kvm *kvm, |
1368 | unsigned long start, unsigned long end, bool blockable); | |
f75e4924 | 1369 | |
bd2a6394 CD |
1370 | #ifdef CONFIG_HAVE_KVM_VCPU_RUN_PID_CHANGE |
1371 | int kvm_arch_vcpu_run_pid_change(struct kvm_vcpu *vcpu); | |
1372 | #else | |
1373 | static inline int kvm_arch_vcpu_run_pid_change(struct kvm_vcpu *vcpu) | |
1374 | { | |
1375 | return 0; | |
1376 | } | |
1377 | #endif /* CONFIG_HAVE_KVM_VCPU_RUN_PID_CHANGE */ | |
1378 | ||
bfd99ff5 | 1379 | #endif |