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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> |
d1e5b0e9 | 22 | #include <linux/vmalloc.h> |
bd2b53b2 | 23 | #include <linux/rcupdate.h> |
bd80158a | 24 | #include <linux/ratelimit.h> |
83f09228 | 25 | #include <linux/err.h> |
c11f11fc | 26 | #include <linux/irqflags.h> |
521921ba | 27 | #include <linux/context_tracking.h> |
1a02b270 | 28 | #include <linux/irqbypass.h> |
8577370f | 29 | #include <linux/swait.h> |
e3736c3e | 30 | #include <linux/refcount.h> |
1d487e9b | 31 | #include <linux/nospec.h> |
e8edc6e0 | 32 | #include <asm/signal.h> |
6aa8b732 | 33 | |
6aa8b732 | 34 | #include <linux/kvm.h> |
102d8325 | 35 | #include <linux/kvm_para.h> |
6aa8b732 | 36 | |
edf88417 | 37 | #include <linux/kvm_types.h> |
d77a39d9 | 38 | |
edf88417 | 39 | #include <asm/kvm_host.h> |
d657a98e | 40 | |
0b1b1dfd GK |
41 | #ifndef KVM_MAX_VCPU_ID |
42 | #define KVM_MAX_VCPU_ID KVM_MAX_VCPUS | |
43 | #endif | |
44 | ||
67b29204 XG |
45 | /* |
46 | * The bit 16 ~ bit 31 of kvm_memory_region::flags are internally used | |
47 | * in kvm, other bits are visible for userspace which are defined in | |
48 | * include/linux/kvm_h. | |
49 | */ | |
50 | #define KVM_MEMSLOT_INVALID (1UL << 16) | |
51 | ||
361209e0 | 52 | /* |
164bf7e5 | 53 | * Bit 63 of the memslot generation number is an "update in-progress flag", |
361209e0 SC |
54 | * e.g. is temporarily set for the duration of install_new_memslots(). |
55 | * This flag effectively creates a unique generation number that is used to | |
56 | * mark cached memslot data, e.g. MMIO accesses, as potentially being stale, | |
57 | * i.e. may (or may not) have come from the previous memslots generation. | |
58 | * | |
59 | * This is necessary because the actual memslots update is not atomic with | |
60 | * respect to the generation number update. Updating the generation number | |
61 | * first would allow a vCPU to cache a spte from the old memslots using the | |
62 | * new generation number, and updating the generation number after switching | |
63 | * to the new memslots would allow cache hits using the old generation number | |
64 | * to reference the defunct memslots. | |
65 | * | |
66 | * This mechanism is used to prevent getting hits in KVM's caches while a | |
67 | * memslot update is in-progress, and to prevent cache hits *after* updating | |
68 | * the actual generation number against accesses that were inserted into the | |
69 | * cache *before* the memslots were updated. | |
70 | */ | |
164bf7e5 | 71 | #define KVM_MEMSLOT_GEN_UPDATE_IN_PROGRESS BIT_ULL(63) |
361209e0 | 72 | |
87da7e66 XG |
73 | /* Two fragments for cross MMIO pages. */ |
74 | #define KVM_MAX_MMIO_FRAGMENTS 2 | |
f78146b0 | 75 | |
f481b069 PB |
76 | #ifndef KVM_ADDRESS_SPACE_NUM |
77 | #define KVM_ADDRESS_SPACE_NUM 1 | |
78 | #endif | |
79 | ||
9c5b1172 XG |
80 | /* |
81 | * For the normal pfn, the highest 12 bits should be zero, | |
81c52c56 XG |
82 | * so we can mask bit 62 ~ bit 52 to indicate the error pfn, |
83 | * mask bit 63 to indicate the noslot pfn. | |
9c5b1172 | 84 | */ |
81c52c56 XG |
85 | #define KVM_PFN_ERR_MASK (0x7ffULL << 52) |
86 | #define KVM_PFN_ERR_NOSLOT_MASK (0xfffULL << 52) | |
87 | #define KVM_PFN_NOSLOT (0x1ULL << 63) | |
9c5b1172 XG |
88 | |
89 | #define KVM_PFN_ERR_FAULT (KVM_PFN_ERR_MASK) | |
90 | #define KVM_PFN_ERR_HWPOISON (KVM_PFN_ERR_MASK + 1) | |
81c52c56 | 91 | #define KVM_PFN_ERR_RO_FAULT (KVM_PFN_ERR_MASK + 2) |
6c8ee57b | 92 | |
81c52c56 XG |
93 | /* |
94 | * error pfns indicate that the gfn is in slot but faild to | |
95 | * translate it to pfn on host. | |
96 | */ | |
ba049e93 | 97 | static inline bool is_error_pfn(kvm_pfn_t pfn) |
83f09228 | 98 | { |
9c5b1172 | 99 | return !!(pfn & KVM_PFN_ERR_MASK); |
83f09228 XG |
100 | } |
101 | ||
81c52c56 XG |
102 | /* |
103 | * error_noslot pfns indicate that the gfn can not be | |
104 | * translated to pfn - it is not in slot or failed to | |
105 | * translate it to pfn. | |
106 | */ | |
ba049e93 | 107 | static inline bool is_error_noslot_pfn(kvm_pfn_t pfn) |
83f09228 | 108 | { |
81c52c56 | 109 | return !!(pfn & KVM_PFN_ERR_NOSLOT_MASK); |
83f09228 XG |
110 | } |
111 | ||
81c52c56 | 112 | /* noslot pfn indicates that the gfn is not in slot. */ |
ba049e93 | 113 | static inline bool is_noslot_pfn(kvm_pfn_t pfn) |
83f09228 | 114 | { |
81c52c56 | 115 | return pfn == KVM_PFN_NOSLOT; |
83f09228 XG |
116 | } |
117 | ||
bf640876 DD |
118 | /* |
119 | * architectures with KVM_HVA_ERR_BAD other than PAGE_OFFSET (e.g. s390) | |
120 | * provide own defines and kvm_is_error_hva | |
121 | */ | |
122 | #ifndef KVM_HVA_ERR_BAD | |
123 | ||
7068d097 XG |
124 | #define KVM_HVA_ERR_BAD (PAGE_OFFSET) |
125 | #define KVM_HVA_ERR_RO_BAD (PAGE_OFFSET + PAGE_SIZE) | |
ca3a490c XG |
126 | |
127 | static inline bool kvm_is_error_hva(unsigned long addr) | |
128 | { | |
7068d097 | 129 | return addr >= PAGE_OFFSET; |
ca3a490c XG |
130 | } |
131 | ||
bf640876 DD |
132 | #endif |
133 | ||
6cede2e6 XG |
134 | #define KVM_ERR_PTR_BAD_PAGE (ERR_PTR(-ENOENT)) |
135 | ||
9c5b1172 | 136 | static inline bool is_error_page(struct page *page) |
6cede2e6 XG |
137 | { |
138 | return IS_ERR(page); | |
139 | } | |
140 | ||
930f7fd6 RK |
141 | #define KVM_REQUEST_MASK GENMASK(7,0) |
142 | #define KVM_REQUEST_NO_WAKEUP BIT(8) | |
7a97cec2 | 143 | #define KVM_REQUEST_WAIT BIT(9) |
d9e368d6 | 144 | /* |
2860c4b1 PB |
145 | * Architecture-independent vcpu->requests bit members |
146 | * Bits 4-7 are reserved for more arch-independent bits. | |
d9e368d6 | 147 | */ |
7a97cec2 PB |
148 | #define KVM_REQ_TLB_FLUSH (0 | KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP) |
149 | #define KVM_REQ_MMU_RELOAD (1 | KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP) | |
150 | #define KVM_REQ_PENDING_TIMER 2 | |
151 | #define KVM_REQ_UNHALT 3 | |
2387149e AJ |
152 | #define KVM_REQUEST_ARCH_BASE 8 |
153 | ||
154 | #define KVM_ARCH_REQ_FLAGS(nr, flags) ({ \ | |
86dafed5 | 155 | BUILD_BUG_ON((unsigned)(nr) >= (FIELD_SIZEOF(struct kvm_vcpu, requests) * 8) - KVM_REQUEST_ARCH_BASE); \ |
2387149e AJ |
156 | (unsigned)(((nr) + KVM_REQUEST_ARCH_BASE) | (flags)); \ |
157 | }) | |
158 | #define KVM_ARCH_REQ(nr) KVM_ARCH_REQ_FLAGS(nr, 0) | |
0cd31043 | 159 | |
7a84428a AW |
160 | #define KVM_USERSPACE_IRQ_SOURCE_ID 0 |
161 | #define KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID 1 | |
5550af4d | 162 | |
c16f862d | 163 | extern struct kmem_cache *kvm_vcpu_cache; |
6aa8b732 | 164 | |
2f303b74 | 165 | extern spinlock_t kvm_lock; |
fc1b7492 GL |
166 | extern struct list_head vm_list; |
167 | ||
743eeb0b SL |
168 | struct kvm_io_range { |
169 | gpa_t addr; | |
170 | int len; | |
171 | struct kvm_io_device *dev; | |
172 | }; | |
173 | ||
786a9f88 | 174 | #define NR_IOBUS_DEVS 1000 |
a1300716 | 175 | |
2eeb2e94 | 176 | struct kvm_io_bus { |
6ea34c9b AK |
177 | int dev_count; |
178 | int ioeventfd_count; | |
a1300716 | 179 | struct kvm_io_range range[]; |
2eeb2e94 GH |
180 | }; |
181 | ||
e93f8a0f MT |
182 | enum kvm_bus { |
183 | KVM_MMIO_BUS, | |
184 | KVM_PIO_BUS, | |
060f0ce6 | 185 | KVM_VIRTIO_CCW_NOTIFY_BUS, |
68c3b4d1 | 186 | KVM_FAST_MMIO_BUS, |
e93f8a0f MT |
187 | KVM_NR_BUSES |
188 | }; | |
189 | ||
e32edf4f | 190 | int kvm_io_bus_write(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr, |
e93f8a0f | 191 | int len, const void *val); |
e32edf4f NN |
192 | int kvm_io_bus_write_cookie(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, |
193 | gpa_t addr, int len, const void *val, long cookie); | |
194 | int kvm_io_bus_read(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr, | |
195 | int len, void *val); | |
743eeb0b SL |
196 | int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, |
197 | int len, struct kvm_io_device *dev); | |
90db1043 DH |
198 | void kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx, |
199 | struct kvm_io_device *dev); | |
8a39d006 AP |
200 | struct kvm_io_device *kvm_io_bus_get_dev(struct kvm *kvm, enum kvm_bus bus_idx, |
201 | gpa_t addr); | |
2eeb2e94 | 202 | |
af585b92 GN |
203 | #ifdef CONFIG_KVM_ASYNC_PF |
204 | struct kvm_async_pf { | |
205 | struct work_struct work; | |
206 | struct list_head link; | |
207 | struct list_head queue; | |
208 | struct kvm_vcpu *vcpu; | |
209 | struct mm_struct *mm; | |
210 | gva_t gva; | |
211 | unsigned long addr; | |
212 | struct kvm_arch_async_pf arch; | |
f2e10669 | 213 | bool wakeup_all; |
af585b92 GN |
214 | }; |
215 | ||
216 | void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu); | |
217 | void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu); | |
e0ead41a | 218 | int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, unsigned long hva, |
af585b92 | 219 | struct kvm_arch_async_pf *arch); |
344d9588 | 220 | int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu); |
af585b92 GN |
221 | #endif |
222 | ||
6b7e2d09 XG |
223 | enum { |
224 | OUTSIDE_GUEST_MODE, | |
225 | IN_GUEST_MODE, | |
c142786c AK |
226 | EXITING_GUEST_MODE, |
227 | READING_SHADOW_PAGE_TABLES, | |
6b7e2d09 XG |
228 | }; |
229 | ||
f78146b0 AK |
230 | /* |
231 | * Sometimes a large or cross-page mmio needs to be broken up into separate | |
232 | * exits for userspace servicing. | |
233 | */ | |
234 | struct kvm_mmio_fragment { | |
235 | gpa_t gpa; | |
236 | void *data; | |
237 | unsigned len; | |
238 | }; | |
239 | ||
d17fbbf7 ZX |
240 | struct kvm_vcpu { |
241 | struct kvm *kvm; | |
31bb117e | 242 | #ifdef CONFIG_PREEMPT_NOTIFIERS |
d17fbbf7 | 243 | struct preempt_notifier preempt_notifier; |
31bb117e | 244 | #endif |
6b7e2d09 | 245 | int cpu; |
d17fbbf7 | 246 | int vcpu_id; |
6b7e2d09 XG |
247 | int srcu_idx; |
248 | int mode; | |
86dafed5 | 249 | u64 requests; |
d0bfb940 | 250 | unsigned long guest_debug; |
6b7e2d09 | 251 | |
bf9f6ac8 FW |
252 | int pre_pcpu; |
253 | struct list_head blocked_vcpu_list; | |
254 | ||
6b7e2d09 XG |
255 | struct mutex mutex; |
256 | struct kvm_run *run; | |
f656ce01 | 257 | |
f775b13e | 258 | int guest_xcr0_loaded; |
8577370f | 259 | struct swait_queue_head wq; |
0e4524a5 | 260 | struct pid __rcu *pid; |
d17fbbf7 ZX |
261 | int sigset_active; |
262 | sigset_t sigset; | |
263 | struct kvm_vcpu_stat stat; | |
19020f8a | 264 | unsigned int halt_poll_ns; |
3491caf2 | 265 | bool valid_wakeup; |
d17fbbf7 | 266 | |
34c16eec | 267 | #ifdef CONFIG_HAS_IOMEM |
d17fbbf7 ZX |
268 | int mmio_needed; |
269 | int mmio_read_completed; | |
270 | int mmio_is_write; | |
f78146b0 AK |
271 | int mmio_cur_fragment; |
272 | int mmio_nr_fragments; | |
273 | struct kvm_mmio_fragment mmio_fragments[KVM_MAX_MMIO_FRAGMENTS]; | |
34c16eec | 274 | #endif |
1165f5fe | 275 | |
af585b92 GN |
276 | #ifdef CONFIG_KVM_ASYNC_PF |
277 | struct { | |
278 | u32 queued; | |
279 | struct list_head queue; | |
280 | struct list_head done; | |
281 | spinlock_t lock; | |
282 | } async_pf; | |
283 | #endif | |
284 | ||
4c088493 R |
285 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
286 | /* | |
287 | * Cpu relax intercept or pause loop exit optimization | |
288 | * in_spin_loop: set when a vcpu does a pause loop exit | |
289 | * or cpu relax intercepted. | |
290 | * dy_eligible: indicates whether vcpu is eligible for directed yield. | |
291 | */ | |
292 | struct { | |
293 | bool in_spin_loop; | |
294 | bool dy_eligible; | |
295 | } spin_loop; | |
296 | #endif | |
3a08a8f9 | 297 | bool preempted; |
d657a98e | 298 | struct kvm_vcpu_arch arch; |
45b5939e | 299 | struct dentry *debugfs_dentry; |
d657a98e ZX |
300 | }; |
301 | ||
6b7e2d09 XG |
302 | static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu) |
303 | { | |
cde9af6e AJ |
304 | /* |
305 | * The memory barrier ensures a previous write to vcpu->requests cannot | |
306 | * be reordered with the read of vcpu->mode. It pairs with the general | |
307 | * memory barrier following the write of vcpu->mode in VCPU RUN. | |
308 | */ | |
309 | smp_mb__before_atomic(); | |
6b7e2d09 XG |
310 | return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE); |
311 | } | |
312 | ||
660c22c4 TY |
313 | /* |
314 | * Some of the bitops functions do not support too long bitmaps. | |
315 | * This number must be determined not to exceed such limits. | |
316 | */ | |
317 | #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1) | |
318 | ||
6aa8b732 AK |
319 | struct kvm_memory_slot { |
320 | gfn_t base_gfn; | |
321 | unsigned long npages; | |
6aa8b732 | 322 | unsigned long *dirty_bitmap; |
db3fe4eb | 323 | struct kvm_arch_memory_slot arch; |
8a7ae055 | 324 | unsigned long userspace_addr; |
6104f472 | 325 | u32 flags; |
1e702d9a | 326 | short id; |
6aa8b732 AK |
327 | }; |
328 | ||
87bf6e7d TY |
329 | static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot) |
330 | { | |
331 | return ALIGN(memslot->npages, BITS_PER_LONG) / 8; | |
332 | } | |
333 | ||
03133347 CI |
334 | static inline unsigned long *kvm_second_dirty_bitmap(struct kvm_memory_slot *memslot) |
335 | { | |
336 | unsigned long len = kvm_dirty_bitmap_bytes(memslot); | |
337 | ||
338 | return memslot->dirty_bitmap + len / sizeof(*memslot->dirty_bitmap); | |
339 | } | |
340 | ||
84223598 CH |
341 | struct kvm_s390_adapter_int { |
342 | u64 ind_addr; | |
343 | u64 summary_addr; | |
344 | u64 ind_offset; | |
345 | u32 summary_offset; | |
346 | u32 adapter_id; | |
347 | }; | |
348 | ||
5c919412 AS |
349 | struct kvm_hv_sint { |
350 | u32 vcpu; | |
351 | u32 sint; | |
352 | }; | |
353 | ||
399ec807 AK |
354 | struct kvm_kernel_irq_routing_entry { |
355 | u32 gsi; | |
5116d8f6 | 356 | u32 type; |
4925663a | 357 | int (*set)(struct kvm_kernel_irq_routing_entry *e, |
aa2fbe6d YZ |
358 | struct kvm *kvm, int irq_source_id, int level, |
359 | bool line_status); | |
399ec807 AK |
360 | union { |
361 | struct { | |
362 | unsigned irqchip; | |
363 | unsigned pin; | |
364 | } irqchip; | |
0455e72c EA |
365 | struct { |
366 | u32 address_lo; | |
367 | u32 address_hi; | |
368 | u32 data; | |
369 | u32 flags; | |
370 | u32 devid; | |
371 | } msi; | |
84223598 | 372 | struct kvm_s390_adapter_int adapter; |
5c919412 | 373 | struct kvm_hv_sint hv_sint; |
399ec807 | 374 | }; |
46e624b9 GN |
375 | struct hlist_node link; |
376 | }; | |
377 | ||
b053b2ae SR |
378 | #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING |
379 | struct kvm_irq_routing_table { | |
380 | int chip[KVM_NR_IRQCHIPS][KVM_IRQCHIP_NUM_PINS]; | |
381 | u32 nr_rt_entries; | |
382 | /* | |
383 | * Array indexed by gsi. Each entry contains list of irq chips | |
384 | * the gsi is connected to. | |
385 | */ | |
386 | struct hlist_head map[0]; | |
387 | }; | |
388 | #endif | |
389 | ||
0743247f AW |
390 | #ifndef KVM_PRIVATE_MEM_SLOTS |
391 | #define KVM_PRIVATE_MEM_SLOTS 0 | |
392 | #endif | |
393 | ||
93a5cef0 | 394 | #ifndef KVM_MEM_SLOTS_NUM |
bbacc0c1 | 395 | #define KVM_MEM_SLOTS_NUM (KVM_USER_MEM_SLOTS + KVM_PRIVATE_MEM_SLOTS) |
93a5cef0 XG |
396 | #endif |
397 | ||
f481b069 PB |
398 | #ifndef __KVM_VCPU_MULTIPLE_ADDRESS_SPACE |
399 | static inline int kvm_arch_vcpu_memslots_id(struct kvm_vcpu *vcpu) | |
400 | { | |
401 | return 0; | |
402 | } | |
403 | #endif | |
404 | ||
bf3e05bc XG |
405 | /* |
406 | * Note: | |
407 | * memslots are not sorted by id anymore, please use id_to_memslot() | |
408 | * to get the memslot by its id. | |
409 | */ | |
46a26bf5 | 410 | struct kvm_memslots { |
49c7754c | 411 | u64 generation; |
93a5cef0 | 412 | struct kvm_memory_slot memslots[KVM_MEM_SLOTS_NUM]; |
f85e2cb5 | 413 | /* The mapping table from slot id to the index in memslots[]. */ |
1e702d9a | 414 | short id_to_index[KVM_MEM_SLOTS_NUM]; |
d4ae84a0 | 415 | atomic_t lru_slot; |
9c1a5d38 | 416 | int used_slots; |
46a26bf5 MT |
417 | }; |
418 | ||
6aa8b732 | 419 | struct kvm { |
aaee2c94 | 420 | spinlock_t mmu_lock; |
79fac95e | 421 | struct mutex slots_lock; |
6d4e4c4f | 422 | struct mm_struct *mm; /* userspace tied to this vm */ |
a80cf7b5 | 423 | struct kvm_memslots __rcu *memslots[KVM_ADDRESS_SPACE_NUM]; |
fb3f0f51 | 424 | struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; |
6c7caebc PB |
425 | |
426 | /* | |
427 | * created_vcpus is protected by kvm->lock, and is incremented | |
428 | * at the beginning of KVM_CREATE_VCPU. online_vcpus is only | |
429 | * incremented after storing the kvm_vcpu pointer in vcpus, | |
430 | * and is accessed atomically. | |
431 | */ | |
73880c80 | 432 | atomic_t online_vcpus; |
6c7caebc | 433 | int created_vcpus; |
217ece61 | 434 | int last_boosted_vcpu; |
133de902 | 435 | struct list_head vm_list; |
60eead79 | 436 | struct mutex lock; |
4a12f951 | 437 | struct kvm_io_bus __rcu *buses[KVM_NR_BUSES]; |
721eecbf GH |
438 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
439 | struct { | |
440 | spinlock_t lock; | |
441 | struct list_head items; | |
7a84428a AW |
442 | struct list_head resampler_list; |
443 | struct mutex resampler_lock; | |
721eecbf | 444 | } irqfds; |
d34e6b17 | 445 | struct list_head ioeventfds; |
721eecbf | 446 | #endif |
ba1389b7 | 447 | struct kvm_vm_stat stat; |
d69fb81f | 448 | struct kvm_arch arch; |
e3736c3e | 449 | refcount_t users_count; |
4b4357e0 | 450 | #ifdef CONFIG_KVM_MMIO |
5f94c174 | 451 | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; |
2b3c246a SL |
452 | spinlock_t ring_lock; |
453 | struct list_head coalesced_zones; | |
5f94c174 | 454 | #endif |
e930bffe | 455 | |
60eead79 | 456 | struct mutex irq_lock; |
75858a84 | 457 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 | 458 | /* |
9957c86d | 459 | * Update side is protected by irq_lock. |
bd2b53b2 | 460 | */ |
4b6a2872 | 461 | struct kvm_irq_routing_table __rcu *irq_routing; |
c77dcacb PB |
462 | #endif |
463 | #ifdef CONFIG_HAVE_KVM_IRQFD | |
136bdfee | 464 | struct hlist_head irq_ack_notifier_list; |
75858a84 AK |
465 | #endif |
466 | ||
36c1ed82 | 467 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
e930bffe AA |
468 | struct mmu_notifier mmu_notifier; |
469 | unsigned long mmu_notifier_seq; | |
470 | long mmu_notifier_count; | |
471 | #endif | |
a086f6a1 | 472 | long tlbs_dirty; |
07f0a7bd | 473 | struct list_head devices; |
2a31b9db | 474 | bool manual_dirty_log_protect; |
536a6f88 JF |
475 | struct dentry *debugfs_dentry; |
476 | struct kvm_stat_data **debugfs_stat_data; | |
6ade8694 PM |
477 | struct srcu_struct srcu; |
478 | struct srcu_struct irq_srcu; | |
fdeaf7e3 | 479 | pid_t userspace_pid; |
6aa8b732 AK |
480 | }; |
481 | ||
a737f256 CD |
482 | #define kvm_err(fmt, ...) \ |
483 | pr_err("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
484 | #define kvm_info(fmt, ...) \ | |
485 | pr_info("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
486 | #define kvm_debug(fmt, ...) \ | |
487 | pr_debug("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
ae0f5499 BD |
488 | #define kvm_debug_ratelimited(fmt, ...) \ |
489 | pr_debug_ratelimited("kvm [%i]: " fmt, task_pid_nr(current), \ | |
490 | ## __VA_ARGS__) | |
a737f256 CD |
491 | #define kvm_pr_unimpl(fmt, ...) \ |
492 | pr_err_ratelimited("kvm [%i]: " fmt, \ | |
493 | task_tgid_nr(current), ## __VA_ARGS__) | |
f0242478 | 494 | |
a737f256 CD |
495 | /* The guest did something we don't support. */ |
496 | #define vcpu_unimpl(vcpu, fmt, ...) \ | |
671d9ab3 BP |
497 | kvm_pr_unimpl("vcpu%i, guest rIP: 0x%lx " fmt, \ |
498 | (vcpu)->vcpu_id, kvm_rip_read(vcpu), ## __VA_ARGS__) | |
6aa8b732 | 499 | |
ee86dbc6 AS |
500 | #define vcpu_debug(vcpu, fmt, ...) \ |
501 | kvm_debug("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__) | |
ae0f5499 BD |
502 | #define vcpu_debug_ratelimited(vcpu, fmt, ...) \ |
503 | kvm_debug_ratelimited("vcpu%i " fmt, (vcpu)->vcpu_id, \ | |
504 | ## __VA_ARGS__) | |
765eaa0f AS |
505 | #define vcpu_err(vcpu, fmt, ...) \ |
506 | kvm_err("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__) | |
ee86dbc6 | 507 | |
4a12f951 CB |
508 | static inline struct kvm_io_bus *kvm_get_bus(struct kvm *kvm, enum kvm_bus idx) |
509 | { | |
510 | return srcu_dereference_check(kvm->buses[idx], &kvm->srcu, | |
3898da94 PB |
511 | lockdep_is_held(&kvm->slots_lock) || |
512 | !refcount_read(&kvm->users_count)); | |
4a12f951 CB |
513 | } |
514 | ||
988a2cae GN |
515 | static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i) |
516 | { | |
1d487e9b PB |
517 | int num_vcpus = atomic_read(&kvm->online_vcpus); |
518 | i = array_index_nospec(i, num_vcpus); | |
519 | ||
520 | /* Pairs with smp_wmb() in kvm_vm_ioctl_create_vcpu. */ | |
988a2cae GN |
521 | smp_rmb(); |
522 | return kvm->vcpus[i]; | |
523 | } | |
524 | ||
525 | #define kvm_for_each_vcpu(idx, vcpup, kvm) \ | |
b42fc3cb JM |
526 | for (idx = 0; \ |
527 | idx < atomic_read(&kvm->online_vcpus) && \ | |
528 | (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \ | |
529 | idx++) | |
988a2cae | 530 | |
db27a7a3 DH |
531 | static inline struct kvm_vcpu *kvm_get_vcpu_by_id(struct kvm *kvm, int id) |
532 | { | |
9b9e3fc4 | 533 | struct kvm_vcpu *vcpu = NULL; |
db27a7a3 DH |
534 | int i; |
535 | ||
9b9e3fc4 | 536 | if (id < 0) |
c896939f | 537 | return NULL; |
9b9e3fc4 GK |
538 | if (id < KVM_MAX_VCPUS) |
539 | vcpu = kvm_get_vcpu(kvm, id); | |
c896939f DH |
540 | if (vcpu && vcpu->vcpu_id == id) |
541 | return vcpu; | |
db27a7a3 DH |
542 | kvm_for_each_vcpu(i, vcpu, kvm) |
543 | if (vcpu->vcpu_id == id) | |
544 | return vcpu; | |
545 | return NULL; | |
546 | } | |
547 | ||
497d72d8 CD |
548 | static inline int kvm_vcpu_get_idx(struct kvm_vcpu *vcpu) |
549 | { | |
550 | struct kvm_vcpu *tmp; | |
551 | int idx; | |
552 | ||
553 | kvm_for_each_vcpu(idx, tmp, vcpu->kvm) | |
554 | if (tmp == vcpu) | |
555 | return idx; | |
556 | BUG(); | |
557 | } | |
558 | ||
be6ba0f0 XG |
559 | #define kvm_for_each_memslot(memslot, slots) \ |
560 | for (memslot = &slots->memslots[0]; \ | |
bf3e05bc XG |
561 | memslot < slots->memslots + KVM_MEM_SLOTS_NUM && memslot->npages;\ |
562 | memslot++) | |
be6ba0f0 | 563 | |
fb3f0f51 RR |
564 | int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id); |
565 | void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); | |
566 | ||
ec7660cc | 567 | void vcpu_load(struct kvm_vcpu *vcpu); |
313a3dc7 CO |
568 | void vcpu_put(struct kvm_vcpu *vcpu); |
569 | ||
6ef768fa | 570 | #ifdef __KVM_HAVE_IOAPIC |
993225ad | 571 | void kvm_arch_post_irq_ack_notifier_list_update(struct kvm *kvm); |
abdb080f | 572 | void kvm_arch_post_irq_routing_update(struct kvm *kvm); |
6ef768fa | 573 | #else |
993225ad | 574 | static inline void kvm_arch_post_irq_ack_notifier_list_update(struct kvm *kvm) |
6ef768fa PB |
575 | { |
576 | } | |
abdb080f | 577 | static inline void kvm_arch_post_irq_routing_update(struct kvm *kvm) |
b053b2ae SR |
578 | { |
579 | } | |
6ef768fa PB |
580 | #endif |
581 | ||
297e2105 | 582 | #ifdef CONFIG_HAVE_KVM_IRQFD |
a0f155e9 CH |
583 | int kvm_irqfd_init(void); |
584 | void kvm_irqfd_exit(void); | |
585 | #else | |
586 | static inline int kvm_irqfd_init(void) | |
587 | { | |
588 | return 0; | |
589 | } | |
590 | ||
591 | static inline void kvm_irqfd_exit(void) | |
592 | { | |
593 | } | |
594 | #endif | |
0ee75bea | 595 | int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, |
c16f862d | 596 | struct module *module); |
cb498ea2 | 597 | void kvm_exit(void); |
6aa8b732 | 598 | |
d39f13b0 IE |
599 | void kvm_get_kvm(struct kvm *kvm); |
600 | void kvm_put_kvm(struct kvm *kvm); | |
601 | ||
f481b069 | 602 | static inline struct kvm_memslots *__kvm_memslots(struct kvm *kvm, int as_id) |
90d83dc3 | 603 | { |
1d487e9b | 604 | as_id = array_index_nospec(as_id, KVM_ADDRESS_SPACE_NUM); |
7e988b10 | 605 | return srcu_dereference_check(kvm->memslots[as_id], &kvm->srcu, |
3898da94 PB |
606 | lockdep_is_held(&kvm->slots_lock) || |
607 | !refcount_read(&kvm->users_count)); | |
90d83dc3 LJ |
608 | } |
609 | ||
f481b069 PB |
610 | static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm) |
611 | { | |
612 | return __kvm_memslots(kvm, 0); | |
613 | } | |
614 | ||
8e73485c PB |
615 | static inline struct kvm_memslots *kvm_vcpu_memslots(struct kvm_vcpu *vcpu) |
616 | { | |
f481b069 PB |
617 | int as_id = kvm_arch_vcpu_memslots_id(vcpu); |
618 | ||
619 | return __kvm_memslots(vcpu->kvm, as_id); | |
8e73485c PB |
620 | } |
621 | ||
28a37544 XG |
622 | static inline struct kvm_memory_slot * |
623 | id_to_memslot(struct kvm_memslots *slots, int id) | |
624 | { | |
f85e2cb5 XG |
625 | int index = slots->id_to_index[id]; |
626 | struct kvm_memory_slot *slot; | |
bf3e05bc | 627 | |
f85e2cb5 | 628 | slot = &slots->memslots[index]; |
bf3e05bc | 629 | |
f85e2cb5 XG |
630 | WARN_ON(slot->id != id); |
631 | return slot; | |
28a37544 XG |
632 | } |
633 | ||
74d0727c TY |
634 | /* |
635 | * KVM_SET_USER_MEMORY_REGION ioctl allows the following operations: | |
636 | * - create a new memory slot | |
637 | * - delete an existing memory slot | |
638 | * - modify an existing memory slot | |
639 | * -- move it in the guest physical memory space | |
640 | * -- just change its flags | |
641 | * | |
642 | * Since flags can be changed by some of these operations, the following | |
643 | * differentiation is the best we can do for __kvm_set_memory_region(): | |
644 | */ | |
645 | enum kvm_mr_change { | |
646 | KVM_MR_CREATE, | |
647 | KVM_MR_DELETE, | |
648 | KVM_MR_MOVE, | |
649 | KVM_MR_FLAGS_ONLY, | |
650 | }; | |
651 | ||
210c7c4d | 652 | int kvm_set_memory_region(struct kvm *kvm, |
09170a49 | 653 | const struct kvm_userspace_memory_region *mem); |
f78e0e2e | 654 | int __kvm_set_memory_region(struct kvm *kvm, |
09170a49 | 655 | const struct kvm_userspace_memory_region *mem); |
5587027c | 656 | void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free, |
db3fe4eb | 657 | struct kvm_memory_slot *dont); |
5587027c AK |
658 | int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, |
659 | unsigned long npages); | |
15248258 | 660 | void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen); |
f7784b8e MT |
661 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
662 | struct kvm_memory_slot *memslot, | |
09170a49 | 663 | const struct kvm_userspace_memory_region *mem, |
7b6195a9 | 664 | enum kvm_mr_change change); |
f7784b8e | 665 | void kvm_arch_commit_memory_region(struct kvm *kvm, |
09170a49 | 666 | const struct kvm_userspace_memory_region *mem, |
8482644a | 667 | const struct kvm_memory_slot *old, |
f36f3f28 | 668 | const struct kvm_memory_slot *new, |
8482644a | 669 | enum kvm_mr_change change); |
db3fe4eb | 670 | bool kvm_largepages_enabled(void); |
54dee993 | 671 | void kvm_disable_largepages(void); |
2df72e9b MT |
672 | /* flush all memory translations */ |
673 | void kvm_arch_flush_shadow_all(struct kvm *kvm); | |
674 | /* flush memory translations pointing to 'slot' */ | |
675 | void kvm_arch_flush_shadow_memslot(struct kvm *kvm, | |
676 | struct kvm_memory_slot *slot); | |
a983fb23 | 677 | |
d9ef13c2 PB |
678 | int gfn_to_page_many_atomic(struct kvm_memory_slot *slot, gfn_t gfn, |
679 | struct page **pages, int nr_pages); | |
48987781 | 680 | |
954bbbc2 | 681 | struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); |
05da4558 | 682 | unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn); |
ba6a3541 | 683 | unsigned long gfn_to_hva_prot(struct kvm *kvm, gfn_t gfn, bool *writable); |
4d8b81ab | 684 | unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
64d83126 CD |
685 | unsigned long gfn_to_hva_memslot_prot(struct kvm_memory_slot *slot, gfn_t gfn, |
686 | bool *writable); | |
b4231d61 IE |
687 | void kvm_release_page_clean(struct page *page); |
688 | void kvm_release_page_dirty(struct page *page); | |
35149e21 AL |
689 | void kvm_set_page_accessed(struct page *page); |
690 | ||
ba049e93 DW |
691 | kvm_pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn); |
692 | kvm_pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn); | |
693 | kvm_pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault, | |
612819c3 | 694 | bool *writable); |
ba049e93 DW |
695 | kvm_pfn_t gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
696 | kvm_pfn_t gfn_to_pfn_memslot_atomic(struct kvm_memory_slot *slot, gfn_t gfn); | |
697 | kvm_pfn_t __gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn, | |
698 | bool atomic, bool *async, bool write_fault, | |
699 | bool *writable); | |
037d92dc | 700 | |
ba049e93 | 701 | void kvm_release_pfn_clean(kvm_pfn_t pfn); |
f7a6509f | 702 | void kvm_release_pfn_dirty(kvm_pfn_t pfn); |
ba049e93 DW |
703 | void kvm_set_pfn_dirty(kvm_pfn_t pfn); |
704 | void kvm_set_pfn_accessed(kvm_pfn_t pfn); | |
705 | void kvm_get_pfn(kvm_pfn_t pfn); | |
35149e21 | 706 | |
195aefde IE |
707 | int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, |
708 | int len); | |
7ec54588 MT |
709 | int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data, |
710 | unsigned long len); | |
195aefde | 711 | int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); |
4e335d9e PB |
712 | int kvm_read_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
713 | void *data, unsigned long len); | |
195aefde IE |
714 | int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, |
715 | int offset, int len); | |
716 | int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, | |
717 | unsigned long len); | |
4e335d9e PB |
718 | int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
719 | void *data, unsigned long len); | |
720 | int kvm_write_guest_offset_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, | |
7a86dab8 JM |
721 | void *data, unsigned int offset, |
722 | unsigned long len); | |
4e335d9e PB |
723 | int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
724 | gpa_t gpa, unsigned long len); | |
195aefde IE |
725 | int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); |
726 | int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); | |
6aa8b732 | 727 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); |
33e94154 | 728 | bool kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); |
8f0b1ab6 | 729 | unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn); |
6aa8b732 AK |
730 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); |
731 | ||
8e73485c PB |
732 | struct kvm_memslots *kvm_vcpu_memslots(struct kvm_vcpu *vcpu); |
733 | struct kvm_memory_slot *kvm_vcpu_gfn_to_memslot(struct kvm_vcpu *vcpu, gfn_t gfn); | |
ba049e93 DW |
734 | kvm_pfn_t kvm_vcpu_gfn_to_pfn_atomic(struct kvm_vcpu *vcpu, gfn_t gfn); |
735 | kvm_pfn_t kvm_vcpu_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn); | |
8e73485c PB |
736 | struct page *kvm_vcpu_gfn_to_page(struct kvm_vcpu *vcpu, gfn_t gfn); |
737 | unsigned long kvm_vcpu_gfn_to_hva(struct kvm_vcpu *vcpu, gfn_t gfn); | |
738 | unsigned long kvm_vcpu_gfn_to_hva_prot(struct kvm_vcpu *vcpu, gfn_t gfn, bool *writable); | |
739 | int kvm_vcpu_read_guest_page(struct kvm_vcpu *vcpu, gfn_t gfn, void *data, int offset, | |
740 | int len); | |
741 | int kvm_vcpu_read_guest_atomic(struct kvm_vcpu *vcpu, gpa_t gpa, void *data, | |
742 | unsigned long len); | |
743 | int kvm_vcpu_read_guest(struct kvm_vcpu *vcpu, gpa_t gpa, void *data, | |
744 | unsigned long len); | |
745 | int kvm_vcpu_write_guest_page(struct kvm_vcpu *vcpu, gfn_t gfn, const void *data, | |
746 | int offset, int len); | |
747 | int kvm_vcpu_write_guest(struct kvm_vcpu *vcpu, gpa_t gpa, const void *data, | |
748 | unsigned long len); | |
749 | void kvm_vcpu_mark_page_dirty(struct kvm_vcpu *vcpu, gfn_t gfn); | |
750 | ||
20b7035c JS |
751 | void kvm_sigset_activate(struct kvm_vcpu *vcpu); |
752 | void kvm_sigset_deactivate(struct kvm_vcpu *vcpu); | |
753 | ||
8776e519 | 754 | void kvm_vcpu_block(struct kvm_vcpu *vcpu); |
3217f7c2 CD |
755 | void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu); |
756 | void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu); | |
178f02ff | 757 | bool kvm_vcpu_wake_up(struct kvm_vcpu *vcpu); |
b6d33834 | 758 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
fa93384f | 759 | int kvm_vcpu_yield_to(struct kvm_vcpu *target); |
199b5763 | 760 | void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu, bool usermode_vcpu_not_eligible); |
a4ee1ca4 | 761 | |
d9e368d6 | 762 | void kvm_flush_remote_tlbs(struct kvm *kvm); |
2e53d63a | 763 | void kvm_reload_remote_mmus(struct kvm *kvm); |
7053df4e VK |
764 | |
765 | bool kvm_make_vcpus_request_mask(struct kvm *kvm, unsigned int req, | |
766 | unsigned long *vcpu_bitmap, cpumask_var_t tmp); | |
445b8236 | 767 | bool kvm_make_all_cpus_request(struct kvm *kvm, unsigned int req); |
6aa8b732 | 768 | |
043405e1 CO |
769 | long kvm_arch_dev_ioctl(struct file *filp, |
770 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 CO |
771 | long kvm_arch_vcpu_ioctl(struct file *filp, |
772 | unsigned int ioctl, unsigned long arg); | |
1499fa80 | 773 | vm_fault_t kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf); |
018d00d2 | 774 | |
784aa3d7 | 775 | int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext); |
018d00d2 | 776 | |
5bb064dc ZX |
777 | int kvm_get_dirty_log(struct kvm *kvm, |
778 | struct kvm_dirty_log *log, int *is_dirty); | |
ba0513b5 MS |
779 | |
780 | int kvm_get_dirty_log_protect(struct kvm *kvm, | |
8fe65a82 | 781 | struct kvm_dirty_log *log, bool *flush); |
2a31b9db PB |
782 | int kvm_clear_dirty_log_protect(struct kvm *kvm, |
783 | struct kvm_clear_dirty_log *log, bool *flush); | |
ba0513b5 | 784 | |
3b0f1d01 | 785 | void kvm_arch_mmu_enable_log_dirty_pt_masked(struct kvm *kvm, |
ba0513b5 MS |
786 | struct kvm_memory_slot *slot, |
787 | gfn_t gfn_offset, | |
788 | unsigned long mask); | |
789 | ||
5bb064dc ZX |
790 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, |
791 | struct kvm_dirty_log *log); | |
2a31b9db PB |
792 | int kvm_vm_ioctl_clear_dirty_log(struct kvm *kvm, |
793 | struct kvm_clear_dirty_log *log); | |
5bb064dc | 794 | |
aa2fbe6d YZ |
795 | int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_level, |
796 | bool line_status); | |
e5d83c74 PB |
797 | int kvm_vm_ioctl_enable_cap(struct kvm *kvm, |
798 | struct kvm_enable_cap *cap); | |
1fe779f8 CO |
799 | long kvm_arch_vm_ioctl(struct file *filp, |
800 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 | 801 | |
d0752060 HB |
802 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); |
803 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); | |
804 | ||
8b006791 ZX |
805 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, |
806 | struct kvm_translation *tr); | |
807 | ||
b6c7a5dc HB |
808 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); |
809 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); | |
810 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
811 | struct kvm_sregs *sregs); | |
812 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
813 | struct kvm_sregs *sregs); | |
62d9f0db MT |
814 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
815 | struct kvm_mp_state *mp_state); | |
816 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
817 | struct kvm_mp_state *mp_state); | |
d0bfb940 JK |
818 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
819 | struct kvm_guest_debug *dbg); | |
b6c7a5dc HB |
820 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); |
821 | ||
f8c16bba ZX |
822 | int kvm_arch_init(void *opaque); |
823 | void kvm_arch_exit(void); | |
043405e1 | 824 | |
e9b11c17 ZX |
825 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); |
826 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu); | |
827 | ||
e790d9ef RK |
828 | void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu); |
829 | ||
e9b11c17 ZX |
830 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu); |
831 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
832 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); | |
833 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); | |
26e5215f | 834 | int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu); |
31928aa5 | 835 | void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu); |
d40ccc62 | 836 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu); |
e9b11c17 | 837 | |
235539b4 LC |
838 | bool kvm_arch_has_vcpu_debugfs(void); |
839 | int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu); | |
840 | ||
13a34e06 RK |
841 | int kvm_arch_hardware_enable(void); |
842 | void kvm_arch_hardware_disable(void); | |
e9b11c17 ZX |
843 | int kvm_arch_hardware_setup(void); |
844 | void kvm_arch_hardware_unsetup(void); | |
845 | void kvm_arch_check_processor_compat(void *rtn); | |
1d737c8a | 846 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu); |
199b5763 | 847 | bool kvm_arch_vcpu_in_kernel(struct kvm_vcpu *vcpu); |
b6d33834 | 848 | int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu); |
e9b11c17 | 849 | |
d89f5eff | 850 | #ifndef __KVM_HAVE_ARCH_VM_ALLOC |
d1e5b0e9 MO |
851 | /* |
852 | * All architectures that want to use vzalloc currently also | |
853 | * need their own kvm_arch_alloc_vm implementation. | |
854 | */ | |
d89f5eff JK |
855 | static inline struct kvm *kvm_arch_alloc_vm(void) |
856 | { | |
857 | return kzalloc(sizeof(struct kvm), GFP_KERNEL); | |
858 | } | |
859 | ||
860 | static inline void kvm_arch_free_vm(struct kvm *kvm) | |
861 | { | |
862 | kfree(kvm); | |
863 | } | |
864 | #endif | |
865 | ||
b08660e5 TL |
866 | #ifndef __KVM_HAVE_ARCH_FLUSH_REMOTE_TLB |
867 | static inline int kvm_arch_flush_remote_tlb(struct kvm *kvm) | |
868 | { | |
869 | return -ENOTSUPP; | |
870 | } | |
871 | #endif | |
872 | ||
e0f0bbc5 AW |
873 | #ifdef __KVM_HAVE_ARCH_NONCOHERENT_DMA |
874 | void kvm_arch_register_noncoherent_dma(struct kvm *kvm); | |
875 | void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm); | |
876 | bool kvm_arch_has_noncoherent_dma(struct kvm *kvm); | |
877 | #else | |
878 | static inline void kvm_arch_register_noncoherent_dma(struct kvm *kvm) | |
879 | { | |
880 | } | |
881 | ||
882 | static inline void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm) | |
883 | { | |
884 | } | |
885 | ||
886 | static inline bool kvm_arch_has_noncoherent_dma(struct kvm *kvm) | |
887 | { | |
888 | return false; | |
889 | } | |
890 | #endif | |
5544eb9b PB |
891 | #ifdef __KVM_HAVE_ARCH_ASSIGNED_DEVICE |
892 | void kvm_arch_start_assignment(struct kvm *kvm); | |
893 | void kvm_arch_end_assignment(struct kvm *kvm); | |
894 | bool kvm_arch_has_assigned_device(struct kvm *kvm); | |
895 | #else | |
896 | static inline void kvm_arch_start_assignment(struct kvm *kvm) | |
897 | { | |
898 | } | |
899 | ||
900 | static inline void kvm_arch_end_assignment(struct kvm *kvm) | |
901 | { | |
902 | } | |
903 | ||
904 | static inline bool kvm_arch_has_assigned_device(struct kvm *kvm) | |
905 | { | |
906 | return false; | |
907 | } | |
908 | #endif | |
e0f0bbc5 | 909 | |
8577370f | 910 | static inline struct swait_queue_head *kvm_arch_vcpu_wq(struct kvm_vcpu *vcpu) |
b6d33834 | 911 | { |
2246f8b5 AG |
912 | #ifdef __KVM_HAVE_ARCH_WQP |
913 | return vcpu->arch.wqp; | |
914 | #else | |
b6d33834 | 915 | return &vcpu->wq; |
b6d33834 | 916 | #endif |
2246f8b5 | 917 | } |
b6d33834 | 918 | |
01c94e64 EA |
919 | #ifdef __KVM_HAVE_ARCH_INTC_INITIALIZED |
920 | /* | |
921 | * returns true if the virtual interrupt controller is initialized and | |
922 | * ready to accept virtual IRQ. On some architectures the virtual interrupt | |
923 | * controller is dynamically instantiated and this is not always true. | |
924 | */ | |
925 | bool kvm_arch_intc_initialized(struct kvm *kvm); | |
926 | #else | |
927 | static inline bool kvm_arch_intc_initialized(struct kvm *kvm) | |
928 | { | |
929 | return true; | |
930 | } | |
931 | #endif | |
932 | ||
e08b9637 | 933 | int kvm_arch_init_vm(struct kvm *kvm, unsigned long type); |
d19a9cd2 | 934 | void kvm_arch_destroy_vm(struct kvm *kvm); |
ad8ba2cd | 935 | void kvm_arch_sync_events(struct kvm *kvm); |
e9b11c17 | 936 | |
3d80840d | 937 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu); |
5736199a | 938 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
682c59a3 | 939 | |
ba049e93 | 940 | bool kvm_is_reserved_pfn(kvm_pfn_t pfn); |
c77fb9dc | 941 | |
62c476c7 BAY |
942 | struct kvm_irq_ack_notifier { |
943 | struct hlist_node link; | |
944 | unsigned gsi; | |
945 | void (*irq_acked)(struct kvm_irq_ack_notifier *kian); | |
946 | }; | |
947 | ||
9957c86d PM |
948 | int kvm_irq_map_gsi(struct kvm *kvm, |
949 | struct kvm_kernel_irq_routing_entry *entries, int gsi); | |
950 | int kvm_irq_map_chip_pin(struct kvm *kvm, unsigned irqchip, unsigned pin); | |
8ba918d4 | 951 | |
aa2fbe6d YZ |
952 | int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level, |
953 | bool line_status); | |
bd2b53b2 | 954 | int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm, |
aa2fbe6d | 955 | int irq_source_id, int level, bool line_status); |
b97e6de9 PB |
956 | int kvm_arch_set_irq_inatomic(struct kvm_kernel_irq_routing_entry *e, |
957 | struct kvm *kvm, int irq_source_id, | |
958 | int level, bool line_status); | |
c7c9c56c | 959 | bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin); |
ba1aefcd | 960 | void kvm_notify_acked_gsi(struct kvm *kvm, int gsi); |
44882eed | 961 | void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin); |
3de42dc0 XZ |
962 | void kvm_register_irq_ack_notifier(struct kvm *kvm, |
963 | struct kvm_irq_ack_notifier *kian); | |
fa40a821 MT |
964 | void kvm_unregister_irq_ack_notifier(struct kvm *kvm, |
965 | struct kvm_irq_ack_notifier *kian); | |
5550af4d SY |
966 | int kvm_request_irq_source_id(struct kvm *kvm); |
967 | void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id); | |
62c476c7 | 968 | |
9d4cba7f PM |
969 | /* |
970 | * search_memslots() and __gfn_to_memslot() are here because they are | |
971 | * used in non-modular code in arch/powerpc/kvm/book3s_hv_rm_mmu.c. | |
972 | * gfn_to_memslot() itself isn't here as an inline because that would | |
973 | * bloat other code too much. | |
974 | */ | |
975 | static inline struct kvm_memory_slot * | |
976 | search_memslots(struct kvm_memslots *slots, gfn_t gfn) | |
977 | { | |
9c1a5d38 | 978 | int start = 0, end = slots->used_slots; |
d4ae84a0 | 979 | int slot = atomic_read(&slots->lru_slot); |
9c1a5d38 IM |
980 | struct kvm_memory_slot *memslots = slots->memslots; |
981 | ||
982 | if (gfn >= memslots[slot].base_gfn && | |
983 | gfn < memslots[slot].base_gfn + memslots[slot].npages) | |
984 | return &memslots[slot]; | |
985 | ||
986 | while (start < end) { | |
987 | slot = start + (end - start) / 2; | |
988 | ||
989 | if (gfn >= memslots[slot].base_gfn) | |
990 | end = slot; | |
991 | else | |
992 | start = slot + 1; | |
993 | } | |
994 | ||
995 | if (gfn >= memslots[start].base_gfn && | |
996 | gfn < memslots[start].base_gfn + memslots[start].npages) { | |
997 | atomic_set(&slots->lru_slot, start); | |
998 | return &memslots[start]; | |
999 | } | |
9d4cba7f PM |
1000 | |
1001 | return NULL; | |
1002 | } | |
1003 | ||
1004 | static inline struct kvm_memory_slot * | |
1005 | __gfn_to_memslot(struct kvm_memslots *slots, gfn_t gfn) | |
1006 | { | |
1007 | return search_memslots(slots, gfn); | |
1008 | } | |
1009 | ||
66a03505 GS |
1010 | static inline unsigned long |
1011 | __gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn) | |
1012 | { | |
1013 | return slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE; | |
1014 | } | |
1015 | ||
0ee8dcb8 XG |
1016 | static inline int memslot_id(struct kvm *kvm, gfn_t gfn) |
1017 | { | |
1018 | return gfn_to_memslot(kvm, gfn)->id; | |
1019 | } | |
1020 | ||
d19a748b TY |
1021 | static inline gfn_t |
1022 | hva_to_gfn_memslot(unsigned long hva, struct kvm_memory_slot *slot) | |
887c08ac | 1023 | { |
d19a748b TY |
1024 | gfn_t gfn_offset = (hva - slot->userspace_addr) >> PAGE_SHIFT; |
1025 | ||
1026 | return slot->base_gfn + gfn_offset; | |
887c08ac XG |
1027 | } |
1028 | ||
1755fbcc AK |
1029 | static inline gpa_t gfn_to_gpa(gfn_t gfn) |
1030 | { | |
1031 | return (gpa_t)gfn << PAGE_SHIFT; | |
1032 | } | |
6aa8b732 | 1033 | |
c30a358d JR |
1034 | static inline gfn_t gpa_to_gfn(gpa_t gpa) |
1035 | { | |
1036 | return (gfn_t)(gpa >> PAGE_SHIFT); | |
1037 | } | |
1038 | ||
ba049e93 | 1039 | static inline hpa_t pfn_to_hpa(kvm_pfn_t pfn) |
62c476c7 BAY |
1040 | { |
1041 | return (hpa_t)pfn << PAGE_SHIFT; | |
1042 | } | |
1043 | ||
5e2f30b7 DH |
1044 | static inline struct page *kvm_vcpu_gpa_to_page(struct kvm_vcpu *vcpu, |
1045 | gpa_t gpa) | |
1046 | { | |
1047 | return kvm_vcpu_gfn_to_page(vcpu, gpa_to_gfn(gpa)); | |
1048 | } | |
1049 | ||
dfeec843 HC |
1050 | static inline bool kvm_is_error_gpa(struct kvm *kvm, gpa_t gpa) |
1051 | { | |
1052 | unsigned long hva = gfn_to_hva(kvm, gpa_to_gfn(gpa)); | |
1053 | ||
1054 | return kvm_is_error_hva(hva); | |
1055 | } | |
1056 | ||
ba1389b7 AK |
1057 | enum kvm_stat_kind { |
1058 | KVM_STAT_VM, | |
1059 | KVM_STAT_VCPU, | |
1060 | }; | |
1061 | ||
536a6f88 JF |
1062 | struct kvm_stat_data { |
1063 | int offset; | |
1064 | struct kvm *kvm; | |
1065 | }; | |
1066 | ||
417bc304 HB |
1067 | struct kvm_stats_debugfs_item { |
1068 | const char *name; | |
1069 | int offset; | |
ba1389b7 | 1070 | enum kvm_stat_kind kind; |
417bc304 HB |
1071 | }; |
1072 | extern struct kvm_stats_debugfs_item debugfs_entries[]; | |
76f7c879 | 1073 | extern struct dentry *kvm_debugfs_dir; |
d4c9ff2d | 1074 | |
36c1ed82 | 1075 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
8ca40a70 | 1076 | static inline int mmu_notifier_retry(struct kvm *kvm, unsigned long mmu_seq) |
e930bffe | 1077 | { |
8ca40a70 | 1078 | if (unlikely(kvm->mmu_notifier_count)) |
e930bffe AA |
1079 | return 1; |
1080 | /* | |
a355aa54 PM |
1081 | * Ensure the read of mmu_notifier_count happens before the read |
1082 | * of mmu_notifier_seq. This interacts with the smp_wmb() in | |
1083 | * mmu_notifier_invalidate_range_end to make sure that the caller | |
1084 | * either sees the old (non-zero) value of mmu_notifier_count or | |
1085 | * the new (incremented) value of mmu_notifier_seq. | |
1086 | * PowerPC Book3s HV KVM calls this under a per-page lock | |
1087 | * rather than under kvm->mmu_lock, for scalability, so | |
1088 | * can't rely on kvm->mmu_lock to keep things ordered. | |
e930bffe | 1089 | */ |
a355aa54 | 1090 | smp_rmb(); |
8ca40a70 | 1091 | if (kvm->mmu_notifier_seq != mmu_seq) |
e930bffe AA |
1092 | return 1; |
1093 | return 0; | |
1094 | } | |
1095 | #endif | |
1096 | ||
a725d56a | 1097 | #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING |
399ec807 | 1098 | |
ddc9cfb7 | 1099 | #define KVM_MAX_IRQ_ROUTES 4096 /* might need extension/rework in the future */ |
399ec807 | 1100 | |
5c0aea0e | 1101 | bool kvm_arch_can_set_irq_routing(struct kvm *kvm); |
399ec807 AK |
1102 | int kvm_set_irq_routing(struct kvm *kvm, |
1103 | const struct kvm_irq_routing_entry *entries, | |
1104 | unsigned nr, | |
1105 | unsigned flags); | |
c63cf538 RK |
1106 | int kvm_set_routing_entry(struct kvm *kvm, |
1107 | struct kvm_kernel_irq_routing_entry *e, | |
e8cde093 | 1108 | const struct kvm_irq_routing_entry *ue); |
399ec807 AK |
1109 | void kvm_free_irq_routing(struct kvm *kvm); |
1110 | ||
1111 | #else | |
1112 | ||
1113 | static inline void kvm_free_irq_routing(struct kvm *kvm) {} | |
1114 | ||
1115 | #endif | |
1116 | ||
297e2105 PM |
1117 | int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi); |
1118 | ||
721eecbf GH |
1119 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
1120 | ||
d34e6b17 | 1121 | void kvm_eventfd_init(struct kvm *kvm); |
914daba8 AG |
1122 | int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args); |
1123 | ||
297e2105 | 1124 | #ifdef CONFIG_HAVE_KVM_IRQFD |
d4db2935 | 1125 | int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args); |
721eecbf | 1126 | void kvm_irqfd_release(struct kvm *kvm); |
9957c86d | 1127 | void kvm_irq_routing_update(struct kvm *); |
914daba8 AG |
1128 | #else |
1129 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) | |
1130 | { | |
1131 | return -EINVAL; | |
1132 | } | |
1133 | ||
1134 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
1135 | #endif | |
721eecbf GH |
1136 | |
1137 | #else | |
1138 | ||
d34e6b17 | 1139 | static inline void kvm_eventfd_init(struct kvm *kvm) {} |
bd2b53b2 | 1140 | |
d4db2935 | 1141 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) |
721eecbf GH |
1142 | { |
1143 | return -EINVAL; | |
1144 | } | |
1145 | ||
1146 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
bd2b53b2 | 1147 | |
27923eb1 | 1148 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
9957c86d | 1149 | static inline void kvm_irq_routing_update(struct kvm *kvm) |
bd2b53b2 | 1150 | { |
bd2b53b2 | 1151 | } |
27923eb1 | 1152 | #endif |
bd2b53b2 | 1153 | |
d34e6b17 GH |
1154 | static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) |
1155 | { | |
1156 | return -ENOSYS; | |
1157 | } | |
721eecbf GH |
1158 | |
1159 | #endif /* CONFIG_HAVE_KVM_EVENTFD */ | |
1160 | ||
07646749 SO |
1161 | void kvm_arch_irq_routing_update(struct kvm *kvm); |
1162 | ||
a8eeb04a AK |
1163 | static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu) |
1164 | { | |
2e4682ba PB |
1165 | /* |
1166 | * Ensure the rest of the request is published to kvm_check_request's | |
1167 | * caller. Paired with the smp_mb__after_atomic in kvm_check_request. | |
1168 | */ | |
1169 | smp_wmb(); | |
86dafed5 | 1170 | set_bit(req & KVM_REQUEST_MASK, (void *)&vcpu->requests); |
a8eeb04a AK |
1171 | } |
1172 | ||
2fa6e1e1 RK |
1173 | static inline bool kvm_request_pending(struct kvm_vcpu *vcpu) |
1174 | { | |
1175 | return READ_ONCE(vcpu->requests); | |
1176 | } | |
1177 | ||
72875d8a RK |
1178 | static inline bool kvm_test_request(int req, struct kvm_vcpu *vcpu) |
1179 | { | |
86dafed5 | 1180 | return test_bit(req & KVM_REQUEST_MASK, (void *)&vcpu->requests); |
72875d8a RK |
1181 | } |
1182 | ||
1183 | static inline void kvm_clear_request(int req, struct kvm_vcpu *vcpu) | |
1184 | { | |
86dafed5 | 1185 | clear_bit(req & KVM_REQUEST_MASK, (void *)&vcpu->requests); |
72875d8a RK |
1186 | } |
1187 | ||
a8eeb04a AK |
1188 | static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu) |
1189 | { | |
72875d8a RK |
1190 | if (kvm_test_request(req, vcpu)) { |
1191 | kvm_clear_request(req, vcpu); | |
2e4682ba PB |
1192 | |
1193 | /* | |
1194 | * Ensure the rest of the request is visible to kvm_check_request's | |
1195 | * caller. Paired with the smp_wmb in kvm_make_request. | |
1196 | */ | |
1197 | smp_mb__after_atomic(); | |
0719837c AK |
1198 | return true; |
1199 | } else { | |
1200 | return false; | |
1201 | } | |
a8eeb04a AK |
1202 | } |
1203 | ||
8b415dcd GL |
1204 | extern bool kvm_rebooting; |
1205 | ||
ec76d819 SJS |
1206 | extern unsigned int halt_poll_ns; |
1207 | extern unsigned int halt_poll_ns_grow; | |
49113d36 | 1208 | extern unsigned int halt_poll_ns_grow_start; |
ec76d819 SJS |
1209 | extern unsigned int halt_poll_ns_shrink; |
1210 | ||
852b6d57 SW |
1211 | struct kvm_device { |
1212 | struct kvm_device_ops *ops; | |
1213 | struct kvm *kvm; | |
852b6d57 | 1214 | void *private; |
07f0a7bd | 1215 | struct list_head vm_node; |
852b6d57 SW |
1216 | }; |
1217 | ||
1218 | /* create, destroy, and name are mandatory */ | |
1219 | struct kvm_device_ops { | |
1220 | const char *name; | |
a28ebea2 CD |
1221 | |
1222 | /* | |
1223 | * create is called holding kvm->lock and any operations not suitable | |
1224 | * to do while holding the lock should be deferred to init (see | |
1225 | * below). | |
1226 | */ | |
852b6d57 SW |
1227 | int (*create)(struct kvm_device *dev, u32 type); |
1228 | ||
023e9fdd CD |
1229 | /* |
1230 | * init is called after create if create is successful and is called | |
1231 | * outside of holding kvm->lock. | |
1232 | */ | |
1233 | void (*init)(struct kvm_device *dev); | |
1234 | ||
852b6d57 SW |
1235 | /* |
1236 | * Destroy is responsible for freeing dev. | |
1237 | * | |
1238 | * Destroy may be called before or after destructors are called | |
1239 | * on emulated I/O regions, depending on whether a reference is | |
1240 | * held by a vcpu or other kvm component that gets destroyed | |
1241 | * after the emulated I/O. | |
1242 | */ | |
1243 | void (*destroy)(struct kvm_device *dev); | |
1244 | ||
1245 | int (*set_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1246 | int (*get_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1247 | int (*has_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1248 | long (*ioctl)(struct kvm_device *dev, unsigned int ioctl, | |
1249 | unsigned long arg); | |
1250 | }; | |
1251 | ||
1252 | void kvm_device_get(struct kvm_device *dev); | |
1253 | void kvm_device_put(struct kvm_device *dev); | |
1254 | struct kvm_device *kvm_device_from_filp(struct file *filp); | |
d60eacb0 | 1255 | int kvm_register_device_ops(struct kvm_device_ops *ops, u32 type); |
571ee1b6 | 1256 | void kvm_unregister_device_ops(u32 type); |
852b6d57 | 1257 | |
5df554ad | 1258 | extern struct kvm_device_ops kvm_mpic_ops; |
ea2f83a7 | 1259 | extern struct kvm_device_ops kvm_arm_vgic_v2_ops; |
a0675c25 | 1260 | extern struct kvm_device_ops kvm_arm_vgic_v3_ops; |
5df554ad | 1261 | |
4c088493 R |
1262 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
1263 | ||
1264 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
1265 | { | |
1266 | vcpu->spin_loop.in_spin_loop = val; | |
1267 | } | |
1268 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
1269 | { | |
1270 | vcpu->spin_loop.dy_eligible = val; | |
1271 | } | |
1272 | ||
1273 | #else /* !CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ | |
1274 | ||
1275 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
1276 | { | |
1277 | } | |
1278 | ||
1279 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
1280 | { | |
1281 | } | |
4c088493 | 1282 | #endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ |
1a02b270 EA |
1283 | |
1284 | #ifdef CONFIG_HAVE_KVM_IRQ_BYPASS | |
14717e20 | 1285 | bool kvm_arch_has_irq_bypass(void); |
1a02b270 EA |
1286 | int kvm_arch_irq_bypass_add_producer(struct irq_bypass_consumer *, |
1287 | struct irq_bypass_producer *); | |
1288 | void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer *, | |
1289 | struct irq_bypass_producer *); | |
1290 | void kvm_arch_irq_bypass_stop(struct irq_bypass_consumer *); | |
1291 | void kvm_arch_irq_bypass_start(struct irq_bypass_consumer *); | |
f70c20aa FW |
1292 | int kvm_arch_update_irqfd_routing(struct kvm *kvm, unsigned int host_irq, |
1293 | uint32_t guest_irq, bool set); | |
1a02b270 | 1294 | #endif /* CONFIG_HAVE_KVM_IRQ_BYPASS */ |
35181e86 | 1295 | |
3491caf2 CB |
1296 | #ifdef CONFIG_HAVE_KVM_INVALID_WAKEUPS |
1297 | /* If we wakeup during the poll time, was it a sucessful poll? */ | |
1298 | static inline bool vcpu_valid_wakeup(struct kvm_vcpu *vcpu) | |
1299 | { | |
1300 | return vcpu->valid_wakeup; | |
1301 | } | |
1302 | ||
1303 | #else | |
1304 | static inline bool vcpu_valid_wakeup(struct kvm_vcpu *vcpu) | |
1305 | { | |
1306 | return true; | |
1307 | } | |
1308 | #endif /* CONFIG_HAVE_KVM_INVALID_WAKEUPS */ | |
1309 | ||
5cb0944c PB |
1310 | #ifdef CONFIG_HAVE_KVM_VCPU_ASYNC_IOCTL |
1311 | long kvm_arch_vcpu_async_ioctl(struct file *filp, | |
1312 | unsigned int ioctl, unsigned long arg); | |
1313 | #else | |
1314 | static inline long kvm_arch_vcpu_async_ioctl(struct file *filp, | |
1315 | unsigned int ioctl, | |
1316 | unsigned long arg) | |
1317 | { | |
1318 | return -ENOIOCTLCMD; | |
1319 | } | |
1320 | #endif /* CONFIG_HAVE_KVM_VCPU_ASYNC_IOCTL */ | |
1321 | ||
93065ac7 MH |
1322 | int kvm_arch_mmu_notifier_invalidate_range(struct kvm *kvm, |
1323 | unsigned long start, unsigned long end, bool blockable); | |
f75e4924 | 1324 | |
bd2a6394 CD |
1325 | #ifdef CONFIG_HAVE_KVM_VCPU_RUN_PID_CHANGE |
1326 | int kvm_arch_vcpu_run_pid_change(struct kvm_vcpu *vcpu); | |
1327 | #else | |
1328 | static inline int kvm_arch_vcpu_run_pid_change(struct kvm_vcpu *vcpu) | |
1329 | { | |
1330 | return 0; | |
1331 | } | |
1332 | #endif /* CONFIG_HAVE_KVM_VCPU_RUN_PID_CHANGE */ | |
1333 | ||
bfd99ff5 | 1334 | #endif |