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edf88417 AK |
1 | #ifndef __KVM_HOST_H |
2 | #define __KVM_HOST_H | |
6aa8b732 AK |
3 | |
4 | /* | |
5 | * This work is licensed under the terms of the GNU GPL, version 2. See | |
6 | * the COPYING file in the top-level directory. | |
7 | */ | |
8 | ||
9 | #include <linux/types.h> | |
e56a7a28 | 10 | #include <linux/hardirq.h> |
6aa8b732 AK |
11 | #include <linux/list.h> |
12 | #include <linux/mutex.h> | |
13 | #include <linux/spinlock.h> | |
06ff0d37 MR |
14 | #include <linux/signal.h> |
15 | #include <linux/sched.h> | |
187f1882 | 16 | #include <linux/bug.h> |
6aa8b732 | 17 | #include <linux/mm.h> |
b297e672 | 18 | #include <linux/mmu_notifier.h> |
15ad7146 | 19 | #include <linux/preempt.h> |
0937c48d | 20 | #include <linux/msi.h> |
d89f5eff | 21 | #include <linux/slab.h> |
bd2b53b2 | 22 | #include <linux/rcupdate.h> |
bd80158a | 23 | #include <linux/ratelimit.h> |
83f09228 | 24 | #include <linux/err.h> |
c11f11fc | 25 | #include <linux/irqflags.h> |
521921ba | 26 | #include <linux/context_tracking.h> |
1a02b270 | 27 | #include <linux/irqbypass.h> |
8577370f | 28 | #include <linux/swait.h> |
e3736c3e | 29 | #include <linux/refcount.h> |
61b5d013 | 30 | #include <linux/nospec.h> |
e8edc6e0 | 31 | #include <asm/signal.h> |
6aa8b732 | 32 | |
6aa8b732 | 33 | #include <linux/kvm.h> |
102d8325 | 34 | #include <linux/kvm_para.h> |
6aa8b732 | 35 | |
edf88417 | 36 | #include <linux/kvm_types.h> |
d77a39d9 | 37 | |
edf88417 | 38 | #include <asm/kvm_host.h> |
d657a98e | 39 | |
0b1b1dfd GK |
40 | #ifndef KVM_MAX_VCPU_ID |
41 | #define KVM_MAX_VCPU_ID KVM_MAX_VCPUS | |
42 | #endif | |
43 | ||
67b29204 XG |
44 | /* |
45 | * The bit 16 ~ bit 31 of kvm_memory_region::flags are internally used | |
46 | * in kvm, other bits are visible for userspace which are defined in | |
47 | * include/linux/kvm_h. | |
48 | */ | |
49 | #define KVM_MEMSLOT_INVALID (1UL << 16) | |
50 | ||
87da7e66 XG |
51 | /* Two fragments for cross MMIO pages. */ |
52 | #define KVM_MAX_MMIO_FRAGMENTS 2 | |
f78146b0 | 53 | |
f481b069 PB |
54 | #ifndef KVM_ADDRESS_SPACE_NUM |
55 | #define KVM_ADDRESS_SPACE_NUM 1 | |
56 | #endif | |
57 | ||
9c5b1172 XG |
58 | /* |
59 | * For the normal pfn, the highest 12 bits should be zero, | |
81c52c56 XG |
60 | * so we can mask bit 62 ~ bit 52 to indicate the error pfn, |
61 | * mask bit 63 to indicate the noslot pfn. | |
9c5b1172 | 62 | */ |
81c52c56 XG |
63 | #define KVM_PFN_ERR_MASK (0x7ffULL << 52) |
64 | #define KVM_PFN_ERR_NOSLOT_MASK (0xfffULL << 52) | |
65 | #define KVM_PFN_NOSLOT (0x1ULL << 63) | |
9c5b1172 XG |
66 | |
67 | #define KVM_PFN_ERR_FAULT (KVM_PFN_ERR_MASK) | |
68 | #define KVM_PFN_ERR_HWPOISON (KVM_PFN_ERR_MASK + 1) | |
81c52c56 | 69 | #define KVM_PFN_ERR_RO_FAULT (KVM_PFN_ERR_MASK + 2) |
6c8ee57b | 70 | |
81c52c56 XG |
71 | /* |
72 | * error pfns indicate that the gfn is in slot but faild to | |
73 | * translate it to pfn on host. | |
74 | */ | |
ba049e93 | 75 | static inline bool is_error_pfn(kvm_pfn_t pfn) |
83f09228 | 76 | { |
9c5b1172 | 77 | return !!(pfn & KVM_PFN_ERR_MASK); |
83f09228 XG |
78 | } |
79 | ||
81c52c56 XG |
80 | /* |
81 | * error_noslot pfns indicate that the gfn can not be | |
82 | * translated to pfn - it is not in slot or failed to | |
83 | * translate it to pfn. | |
84 | */ | |
ba049e93 | 85 | static inline bool is_error_noslot_pfn(kvm_pfn_t pfn) |
83f09228 | 86 | { |
81c52c56 | 87 | return !!(pfn & KVM_PFN_ERR_NOSLOT_MASK); |
83f09228 XG |
88 | } |
89 | ||
81c52c56 | 90 | /* noslot pfn indicates that the gfn is not in slot. */ |
ba049e93 | 91 | static inline bool is_noslot_pfn(kvm_pfn_t pfn) |
83f09228 | 92 | { |
81c52c56 | 93 | return pfn == KVM_PFN_NOSLOT; |
83f09228 XG |
94 | } |
95 | ||
bf640876 DD |
96 | /* |
97 | * architectures with KVM_HVA_ERR_BAD other than PAGE_OFFSET (e.g. s390) | |
98 | * provide own defines and kvm_is_error_hva | |
99 | */ | |
100 | #ifndef KVM_HVA_ERR_BAD | |
101 | ||
7068d097 XG |
102 | #define KVM_HVA_ERR_BAD (PAGE_OFFSET) |
103 | #define KVM_HVA_ERR_RO_BAD (PAGE_OFFSET + PAGE_SIZE) | |
ca3a490c XG |
104 | |
105 | static inline bool kvm_is_error_hva(unsigned long addr) | |
106 | { | |
7068d097 | 107 | return addr >= PAGE_OFFSET; |
ca3a490c XG |
108 | } |
109 | ||
bf640876 DD |
110 | #endif |
111 | ||
6cede2e6 XG |
112 | #define KVM_ERR_PTR_BAD_PAGE (ERR_PTR(-ENOENT)) |
113 | ||
9c5b1172 | 114 | static inline bool is_error_page(struct page *page) |
6cede2e6 XG |
115 | { |
116 | return IS_ERR(page); | |
117 | } | |
118 | ||
930f7fd6 RK |
119 | #define KVM_REQUEST_MASK GENMASK(7,0) |
120 | #define KVM_REQUEST_NO_WAKEUP BIT(8) | |
7a97cec2 | 121 | #define KVM_REQUEST_WAIT BIT(9) |
d9e368d6 | 122 | /* |
2860c4b1 PB |
123 | * Architecture-independent vcpu->requests bit members |
124 | * Bits 4-7 are reserved for more arch-independent bits. | |
d9e368d6 | 125 | */ |
7a97cec2 PB |
126 | #define KVM_REQ_TLB_FLUSH (0 | KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP) |
127 | #define KVM_REQ_MMU_RELOAD (1 | KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP) | |
128 | #define KVM_REQ_PENDING_TIMER 2 | |
129 | #define KVM_REQ_UNHALT 3 | |
2387149e AJ |
130 | #define KVM_REQUEST_ARCH_BASE 8 |
131 | ||
132 | #define KVM_ARCH_REQ_FLAGS(nr, flags) ({ \ | |
133 | BUILD_BUG_ON((unsigned)(nr) >= 32 - KVM_REQUEST_ARCH_BASE); \ | |
134 | (unsigned)(((nr) + KVM_REQUEST_ARCH_BASE) | (flags)); \ | |
135 | }) | |
136 | #define KVM_ARCH_REQ(nr) KVM_ARCH_REQ_FLAGS(nr, 0) | |
0cd31043 | 137 | |
7a84428a AW |
138 | #define KVM_USERSPACE_IRQ_SOURCE_ID 0 |
139 | #define KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID 1 | |
5550af4d | 140 | |
c16f862d | 141 | extern struct kmem_cache *kvm_vcpu_cache; |
6aa8b732 | 142 | |
34d52a52 | 143 | extern struct mutex kvm_lock; |
fc1b7492 GL |
144 | extern struct list_head vm_list; |
145 | ||
743eeb0b SL |
146 | struct kvm_io_range { |
147 | gpa_t addr; | |
148 | int len; | |
149 | struct kvm_io_device *dev; | |
150 | }; | |
151 | ||
786a9f88 | 152 | #define NR_IOBUS_DEVS 1000 |
a1300716 | 153 | |
2eeb2e94 | 154 | struct kvm_io_bus { |
6ea34c9b AK |
155 | int dev_count; |
156 | int ioeventfd_count; | |
a1300716 | 157 | struct kvm_io_range range[]; |
2eeb2e94 GH |
158 | }; |
159 | ||
e93f8a0f MT |
160 | enum kvm_bus { |
161 | KVM_MMIO_BUS, | |
162 | KVM_PIO_BUS, | |
060f0ce6 | 163 | KVM_VIRTIO_CCW_NOTIFY_BUS, |
68c3b4d1 | 164 | KVM_FAST_MMIO_BUS, |
e93f8a0f MT |
165 | KVM_NR_BUSES |
166 | }; | |
167 | ||
e32edf4f | 168 | int kvm_io_bus_write(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr, |
e93f8a0f | 169 | int len, const void *val); |
e32edf4f NN |
170 | int kvm_io_bus_write_cookie(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, |
171 | gpa_t addr, int len, const void *val, long cookie); | |
172 | int kvm_io_bus_read(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr, | |
173 | int len, void *val); | |
743eeb0b SL |
174 | int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, |
175 | int len, struct kvm_io_device *dev); | |
90db1043 DH |
176 | void kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx, |
177 | struct kvm_io_device *dev); | |
8a39d006 AP |
178 | struct kvm_io_device *kvm_io_bus_get_dev(struct kvm *kvm, enum kvm_bus bus_idx, |
179 | gpa_t addr); | |
2eeb2e94 | 180 | |
af585b92 GN |
181 | #ifdef CONFIG_KVM_ASYNC_PF |
182 | struct kvm_async_pf { | |
183 | struct work_struct work; | |
184 | struct list_head link; | |
185 | struct list_head queue; | |
186 | struct kvm_vcpu *vcpu; | |
187 | struct mm_struct *mm; | |
188 | gva_t gva; | |
189 | unsigned long addr; | |
190 | struct kvm_arch_async_pf arch; | |
f2e10669 | 191 | bool wakeup_all; |
af585b92 GN |
192 | }; |
193 | ||
194 | void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu); | |
195 | void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu); | |
e0ead41a | 196 | int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, unsigned long hva, |
af585b92 | 197 | struct kvm_arch_async_pf *arch); |
344d9588 | 198 | int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu); |
af585b92 GN |
199 | #endif |
200 | ||
6b7e2d09 XG |
201 | enum { |
202 | OUTSIDE_GUEST_MODE, | |
203 | IN_GUEST_MODE, | |
c142786c AK |
204 | EXITING_GUEST_MODE, |
205 | READING_SHADOW_PAGE_TABLES, | |
6b7e2d09 XG |
206 | }; |
207 | ||
f78146b0 AK |
208 | /* |
209 | * Sometimes a large or cross-page mmio needs to be broken up into separate | |
210 | * exits for userspace servicing. | |
211 | */ | |
212 | struct kvm_mmio_fragment { | |
213 | gpa_t gpa; | |
214 | void *data; | |
215 | unsigned len; | |
216 | }; | |
217 | ||
d17fbbf7 ZX |
218 | struct kvm_vcpu { |
219 | struct kvm *kvm; | |
31bb117e | 220 | #ifdef CONFIG_PREEMPT_NOTIFIERS |
d17fbbf7 | 221 | struct preempt_notifier preempt_notifier; |
31bb117e | 222 | #endif |
6b7e2d09 | 223 | int cpu; |
d17fbbf7 | 224 | int vcpu_id; |
6b7e2d09 XG |
225 | int srcu_idx; |
226 | int mode; | |
d17fbbf7 | 227 | unsigned long requests; |
d0bfb940 | 228 | unsigned long guest_debug; |
6b7e2d09 | 229 | |
bf9f6ac8 FW |
230 | int pre_pcpu; |
231 | struct list_head blocked_vcpu_list; | |
232 | ||
6b7e2d09 XG |
233 | struct mutex mutex; |
234 | struct kvm_run *run; | |
f656ce01 | 235 | |
f775b13e | 236 | int guest_xcr0_loaded; |
8577370f | 237 | struct swait_queue_head wq; |
0e4524a5 | 238 | struct pid __rcu *pid; |
d17fbbf7 ZX |
239 | int sigset_active; |
240 | sigset_t sigset; | |
241 | struct kvm_vcpu_stat stat; | |
19020f8a | 242 | unsigned int halt_poll_ns; |
3491caf2 | 243 | bool valid_wakeup; |
d17fbbf7 | 244 | |
34c16eec | 245 | #ifdef CONFIG_HAS_IOMEM |
d17fbbf7 ZX |
246 | int mmio_needed; |
247 | int mmio_read_completed; | |
248 | int mmio_is_write; | |
f78146b0 AK |
249 | int mmio_cur_fragment; |
250 | int mmio_nr_fragments; | |
251 | struct kvm_mmio_fragment mmio_fragments[KVM_MAX_MMIO_FRAGMENTS]; | |
34c16eec | 252 | #endif |
1165f5fe | 253 | |
af585b92 GN |
254 | #ifdef CONFIG_KVM_ASYNC_PF |
255 | struct { | |
256 | u32 queued; | |
257 | struct list_head queue; | |
258 | struct list_head done; | |
259 | spinlock_t lock; | |
260 | } async_pf; | |
261 | #endif | |
262 | ||
4c088493 R |
263 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
264 | /* | |
265 | * Cpu relax intercept or pause loop exit optimization | |
266 | * in_spin_loop: set when a vcpu does a pause loop exit | |
267 | * or cpu relax intercepted. | |
268 | * dy_eligible: indicates whether vcpu is eligible for directed yield. | |
269 | */ | |
270 | struct { | |
271 | bool in_spin_loop; | |
272 | bool dy_eligible; | |
273 | } spin_loop; | |
274 | #endif | |
3a08a8f9 | 275 | bool preempted; |
d657a98e | 276 | struct kvm_vcpu_arch arch; |
45b5939e | 277 | struct dentry *debugfs_dentry; |
d657a98e ZX |
278 | }; |
279 | ||
6b7e2d09 XG |
280 | static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu) |
281 | { | |
cde9af6e AJ |
282 | /* |
283 | * The memory barrier ensures a previous write to vcpu->requests cannot | |
284 | * be reordered with the read of vcpu->mode. It pairs with the general | |
285 | * memory barrier following the write of vcpu->mode in VCPU RUN. | |
286 | */ | |
287 | smp_mb__before_atomic(); | |
6b7e2d09 XG |
288 | return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE); |
289 | } | |
290 | ||
660c22c4 TY |
291 | /* |
292 | * Some of the bitops functions do not support too long bitmaps. | |
293 | * This number must be determined not to exceed such limits. | |
294 | */ | |
295 | #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1) | |
296 | ||
6aa8b732 AK |
297 | struct kvm_memory_slot { |
298 | gfn_t base_gfn; | |
299 | unsigned long npages; | |
6aa8b732 | 300 | unsigned long *dirty_bitmap; |
db3fe4eb | 301 | struct kvm_arch_memory_slot arch; |
8a7ae055 | 302 | unsigned long userspace_addr; |
6104f472 | 303 | u32 flags; |
1e702d9a | 304 | short id; |
6aa8b732 AK |
305 | }; |
306 | ||
87bf6e7d TY |
307 | static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot) |
308 | { | |
309 | return ALIGN(memslot->npages, BITS_PER_LONG) / 8; | |
310 | } | |
311 | ||
84223598 CH |
312 | struct kvm_s390_adapter_int { |
313 | u64 ind_addr; | |
314 | u64 summary_addr; | |
315 | u64 ind_offset; | |
316 | u32 summary_offset; | |
317 | u32 adapter_id; | |
318 | }; | |
319 | ||
5c919412 AS |
320 | struct kvm_hv_sint { |
321 | u32 vcpu; | |
322 | u32 sint; | |
323 | }; | |
324 | ||
399ec807 AK |
325 | struct kvm_kernel_irq_routing_entry { |
326 | u32 gsi; | |
5116d8f6 | 327 | u32 type; |
4925663a | 328 | int (*set)(struct kvm_kernel_irq_routing_entry *e, |
aa2fbe6d YZ |
329 | struct kvm *kvm, int irq_source_id, int level, |
330 | bool line_status); | |
399ec807 AK |
331 | union { |
332 | struct { | |
333 | unsigned irqchip; | |
334 | unsigned pin; | |
335 | } irqchip; | |
0455e72c EA |
336 | struct { |
337 | u32 address_lo; | |
338 | u32 address_hi; | |
339 | u32 data; | |
340 | u32 flags; | |
341 | u32 devid; | |
342 | } msi; | |
84223598 | 343 | struct kvm_s390_adapter_int adapter; |
5c919412 | 344 | struct kvm_hv_sint hv_sint; |
399ec807 | 345 | }; |
46e624b9 GN |
346 | struct hlist_node link; |
347 | }; | |
348 | ||
b053b2ae SR |
349 | #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING |
350 | struct kvm_irq_routing_table { | |
351 | int chip[KVM_NR_IRQCHIPS][KVM_IRQCHIP_NUM_PINS]; | |
352 | u32 nr_rt_entries; | |
353 | /* | |
354 | * Array indexed by gsi. Each entry contains list of irq chips | |
355 | * the gsi is connected to. | |
356 | */ | |
357 | struct hlist_head map[0]; | |
358 | }; | |
359 | #endif | |
360 | ||
0743247f AW |
361 | #ifndef KVM_PRIVATE_MEM_SLOTS |
362 | #define KVM_PRIVATE_MEM_SLOTS 0 | |
363 | #endif | |
364 | ||
93a5cef0 | 365 | #ifndef KVM_MEM_SLOTS_NUM |
bbacc0c1 | 366 | #define KVM_MEM_SLOTS_NUM (KVM_USER_MEM_SLOTS + KVM_PRIVATE_MEM_SLOTS) |
93a5cef0 XG |
367 | #endif |
368 | ||
f481b069 PB |
369 | #ifndef __KVM_VCPU_MULTIPLE_ADDRESS_SPACE |
370 | static inline int kvm_arch_vcpu_memslots_id(struct kvm_vcpu *vcpu) | |
371 | { | |
372 | return 0; | |
373 | } | |
374 | #endif | |
375 | ||
bf3e05bc XG |
376 | /* |
377 | * Note: | |
378 | * memslots are not sorted by id anymore, please use id_to_memslot() | |
379 | * to get the memslot by its id. | |
380 | */ | |
46a26bf5 | 381 | struct kvm_memslots { |
49c7754c | 382 | u64 generation; |
93a5cef0 | 383 | struct kvm_memory_slot memslots[KVM_MEM_SLOTS_NUM]; |
f85e2cb5 | 384 | /* The mapping table from slot id to the index in memslots[]. */ |
1e702d9a | 385 | short id_to_index[KVM_MEM_SLOTS_NUM]; |
d4ae84a0 | 386 | atomic_t lru_slot; |
9c1a5d38 | 387 | int used_slots; |
46a26bf5 MT |
388 | }; |
389 | ||
6aa8b732 | 390 | struct kvm { |
aaee2c94 | 391 | spinlock_t mmu_lock; |
79fac95e | 392 | struct mutex slots_lock; |
6d4e4c4f | 393 | struct mm_struct *mm; /* userspace tied to this vm */ |
a80cf7b5 | 394 | struct kvm_memslots __rcu *memslots[KVM_ADDRESS_SPACE_NUM]; |
fb3f0f51 | 395 | struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; |
6c7caebc PB |
396 | |
397 | /* | |
398 | * created_vcpus is protected by kvm->lock, and is incremented | |
399 | * at the beginning of KVM_CREATE_VCPU. online_vcpus is only | |
400 | * incremented after storing the kvm_vcpu pointer in vcpus, | |
401 | * and is accessed atomically. | |
402 | */ | |
73880c80 | 403 | atomic_t online_vcpus; |
6c7caebc | 404 | int created_vcpus; |
217ece61 | 405 | int last_boosted_vcpu; |
133de902 | 406 | struct list_head vm_list; |
60eead79 | 407 | struct mutex lock; |
4a12f951 | 408 | struct kvm_io_bus __rcu *buses[KVM_NR_BUSES]; |
721eecbf GH |
409 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
410 | struct { | |
411 | spinlock_t lock; | |
412 | struct list_head items; | |
7a84428a AW |
413 | struct list_head resampler_list; |
414 | struct mutex resampler_lock; | |
721eecbf | 415 | } irqfds; |
d34e6b17 | 416 | struct list_head ioeventfds; |
721eecbf | 417 | #endif |
ba1389b7 | 418 | struct kvm_vm_stat stat; |
d69fb81f | 419 | struct kvm_arch arch; |
e3736c3e | 420 | refcount_t users_count; |
4b4357e0 | 421 | #ifdef CONFIG_KVM_MMIO |
5f94c174 | 422 | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; |
2b3c246a SL |
423 | spinlock_t ring_lock; |
424 | struct list_head coalesced_zones; | |
5f94c174 | 425 | #endif |
e930bffe | 426 | |
60eead79 | 427 | struct mutex irq_lock; |
75858a84 | 428 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 | 429 | /* |
9957c86d | 430 | * Update side is protected by irq_lock. |
bd2b53b2 | 431 | */ |
4b6a2872 | 432 | struct kvm_irq_routing_table __rcu *irq_routing; |
c77dcacb PB |
433 | #endif |
434 | #ifdef CONFIG_HAVE_KVM_IRQFD | |
136bdfee | 435 | struct hlist_head irq_ack_notifier_list; |
75858a84 AK |
436 | #endif |
437 | ||
36c1ed82 | 438 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
e930bffe AA |
439 | struct mmu_notifier mmu_notifier; |
440 | unsigned long mmu_notifier_seq; | |
441 | long mmu_notifier_count; | |
442 | #endif | |
a086f6a1 | 443 | long tlbs_dirty; |
07f0a7bd | 444 | struct list_head devices; |
536a6f88 JF |
445 | struct dentry *debugfs_dentry; |
446 | struct kvm_stat_data **debugfs_stat_data; | |
6ade8694 PM |
447 | struct srcu_struct srcu; |
448 | struct srcu_struct irq_srcu; | |
fdeaf7e3 | 449 | pid_t userspace_pid; |
6aa8b732 AK |
450 | }; |
451 | ||
a737f256 CD |
452 | #define kvm_err(fmt, ...) \ |
453 | pr_err("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
454 | #define kvm_info(fmt, ...) \ | |
455 | pr_info("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
456 | #define kvm_debug(fmt, ...) \ | |
457 | pr_debug("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
ae0f5499 BD |
458 | #define kvm_debug_ratelimited(fmt, ...) \ |
459 | pr_debug_ratelimited("kvm [%i]: " fmt, task_pid_nr(current), \ | |
460 | ## __VA_ARGS__) | |
a737f256 CD |
461 | #define kvm_pr_unimpl(fmt, ...) \ |
462 | pr_err_ratelimited("kvm [%i]: " fmt, \ | |
463 | task_tgid_nr(current), ## __VA_ARGS__) | |
f0242478 | 464 | |
a737f256 CD |
465 | /* The guest did something we don't support. */ |
466 | #define vcpu_unimpl(vcpu, fmt, ...) \ | |
671d9ab3 BP |
467 | kvm_pr_unimpl("vcpu%i, guest rIP: 0x%lx " fmt, \ |
468 | (vcpu)->vcpu_id, kvm_rip_read(vcpu), ## __VA_ARGS__) | |
6aa8b732 | 469 | |
ee86dbc6 AS |
470 | #define vcpu_debug(vcpu, fmt, ...) \ |
471 | kvm_debug("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__) | |
ae0f5499 BD |
472 | #define vcpu_debug_ratelimited(vcpu, fmt, ...) \ |
473 | kvm_debug_ratelimited("vcpu%i " fmt, (vcpu)->vcpu_id, \ | |
474 | ## __VA_ARGS__) | |
765eaa0f AS |
475 | #define vcpu_err(vcpu, fmt, ...) \ |
476 | kvm_err("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__) | |
ee86dbc6 | 477 | |
4a12f951 CB |
478 | static inline struct kvm_io_bus *kvm_get_bus(struct kvm *kvm, enum kvm_bus idx) |
479 | { | |
480 | return srcu_dereference_check(kvm->buses[idx], &kvm->srcu, | |
3898da94 PB |
481 | lockdep_is_held(&kvm->slots_lock) || |
482 | !refcount_read(&kvm->users_count)); | |
4a12f951 CB |
483 | } |
484 | ||
988a2cae GN |
485 | static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i) |
486 | { | |
61b5d013 PB |
487 | int num_vcpus = atomic_read(&kvm->online_vcpus); |
488 | i = array_index_nospec(i, num_vcpus); | |
489 | ||
490 | /* Pairs with smp_wmb() in kvm_vm_ioctl_create_vcpu. */ | |
988a2cae GN |
491 | smp_rmb(); |
492 | return kvm->vcpus[i]; | |
493 | } | |
494 | ||
495 | #define kvm_for_each_vcpu(idx, vcpup, kvm) \ | |
b42fc3cb JM |
496 | for (idx = 0; \ |
497 | idx < atomic_read(&kvm->online_vcpus) && \ | |
498 | (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \ | |
499 | idx++) | |
988a2cae | 500 | |
db27a7a3 DH |
501 | static inline struct kvm_vcpu *kvm_get_vcpu_by_id(struct kvm *kvm, int id) |
502 | { | |
9b9e3fc4 | 503 | struct kvm_vcpu *vcpu = NULL; |
db27a7a3 DH |
504 | int i; |
505 | ||
9b9e3fc4 | 506 | if (id < 0) |
c896939f | 507 | return NULL; |
9b9e3fc4 GK |
508 | if (id < KVM_MAX_VCPUS) |
509 | vcpu = kvm_get_vcpu(kvm, id); | |
c896939f DH |
510 | if (vcpu && vcpu->vcpu_id == id) |
511 | return vcpu; | |
db27a7a3 DH |
512 | kvm_for_each_vcpu(i, vcpu, kvm) |
513 | if (vcpu->vcpu_id == id) | |
514 | return vcpu; | |
515 | return NULL; | |
516 | } | |
517 | ||
497d72d8 CD |
518 | static inline int kvm_vcpu_get_idx(struct kvm_vcpu *vcpu) |
519 | { | |
520 | struct kvm_vcpu *tmp; | |
521 | int idx; | |
522 | ||
523 | kvm_for_each_vcpu(idx, tmp, vcpu->kvm) | |
524 | if (tmp == vcpu) | |
525 | return idx; | |
526 | BUG(); | |
527 | } | |
528 | ||
be6ba0f0 XG |
529 | #define kvm_for_each_memslot(memslot, slots) \ |
530 | for (memslot = &slots->memslots[0]; \ | |
bf3e05bc XG |
531 | memslot < slots->memslots + KVM_MEM_SLOTS_NUM && memslot->npages;\ |
532 | memslot++) | |
be6ba0f0 | 533 | |
fb3f0f51 RR |
534 | int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id); |
535 | void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); | |
536 | ||
9fc77441 | 537 | int __must_check vcpu_load(struct kvm_vcpu *vcpu); |
313a3dc7 CO |
538 | void vcpu_put(struct kvm_vcpu *vcpu); |
539 | ||
6ef768fa | 540 | #ifdef __KVM_HAVE_IOAPIC |
993225ad | 541 | void kvm_arch_post_irq_ack_notifier_list_update(struct kvm *kvm); |
abdb080f | 542 | void kvm_arch_post_irq_routing_update(struct kvm *kvm); |
6ef768fa | 543 | #else |
993225ad | 544 | static inline void kvm_arch_post_irq_ack_notifier_list_update(struct kvm *kvm) |
6ef768fa PB |
545 | { |
546 | } | |
abdb080f | 547 | static inline void kvm_arch_post_irq_routing_update(struct kvm *kvm) |
b053b2ae SR |
548 | { |
549 | } | |
6ef768fa PB |
550 | #endif |
551 | ||
297e2105 | 552 | #ifdef CONFIG_HAVE_KVM_IRQFD |
a0f155e9 CH |
553 | int kvm_irqfd_init(void); |
554 | void kvm_irqfd_exit(void); | |
555 | #else | |
556 | static inline int kvm_irqfd_init(void) | |
557 | { | |
558 | return 0; | |
559 | } | |
560 | ||
561 | static inline void kvm_irqfd_exit(void) | |
562 | { | |
563 | } | |
564 | #endif | |
0ee75bea | 565 | int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, |
c16f862d | 566 | struct module *module); |
cb498ea2 | 567 | void kvm_exit(void); |
6aa8b732 | 568 | |
d39f13b0 IE |
569 | void kvm_get_kvm(struct kvm *kvm); |
570 | void kvm_put_kvm(struct kvm *kvm); | |
571 | ||
f481b069 | 572 | static inline struct kvm_memslots *__kvm_memslots(struct kvm *kvm, int as_id) |
90d83dc3 | 573 | { |
61b5d013 | 574 | as_id = array_index_nospec(as_id, KVM_ADDRESS_SPACE_NUM); |
7e988b10 | 575 | return srcu_dereference_check(kvm->memslots[as_id], &kvm->srcu, |
3898da94 PB |
576 | lockdep_is_held(&kvm->slots_lock) || |
577 | !refcount_read(&kvm->users_count)); | |
90d83dc3 LJ |
578 | } |
579 | ||
f481b069 PB |
580 | static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm) |
581 | { | |
582 | return __kvm_memslots(kvm, 0); | |
583 | } | |
584 | ||
8e73485c PB |
585 | static inline struct kvm_memslots *kvm_vcpu_memslots(struct kvm_vcpu *vcpu) |
586 | { | |
f481b069 PB |
587 | int as_id = kvm_arch_vcpu_memslots_id(vcpu); |
588 | ||
589 | return __kvm_memslots(vcpu->kvm, as_id); | |
8e73485c PB |
590 | } |
591 | ||
28a37544 XG |
592 | static inline struct kvm_memory_slot * |
593 | id_to_memslot(struct kvm_memslots *slots, int id) | |
594 | { | |
f85e2cb5 XG |
595 | int index = slots->id_to_index[id]; |
596 | struct kvm_memory_slot *slot; | |
bf3e05bc | 597 | |
f85e2cb5 | 598 | slot = &slots->memslots[index]; |
bf3e05bc | 599 | |
f85e2cb5 XG |
600 | WARN_ON(slot->id != id); |
601 | return slot; | |
28a37544 XG |
602 | } |
603 | ||
74d0727c TY |
604 | /* |
605 | * KVM_SET_USER_MEMORY_REGION ioctl allows the following operations: | |
606 | * - create a new memory slot | |
607 | * - delete an existing memory slot | |
608 | * - modify an existing memory slot | |
609 | * -- move it in the guest physical memory space | |
610 | * -- just change its flags | |
611 | * | |
612 | * Since flags can be changed by some of these operations, the following | |
613 | * differentiation is the best we can do for __kvm_set_memory_region(): | |
614 | */ | |
615 | enum kvm_mr_change { | |
616 | KVM_MR_CREATE, | |
617 | KVM_MR_DELETE, | |
618 | KVM_MR_MOVE, | |
619 | KVM_MR_FLAGS_ONLY, | |
620 | }; | |
621 | ||
210c7c4d | 622 | int kvm_set_memory_region(struct kvm *kvm, |
09170a49 | 623 | const struct kvm_userspace_memory_region *mem); |
f78e0e2e | 624 | int __kvm_set_memory_region(struct kvm *kvm, |
09170a49 | 625 | const struct kvm_userspace_memory_region *mem); |
5587027c | 626 | void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free, |
db3fe4eb | 627 | struct kvm_memory_slot *dont); |
5587027c AK |
628 | int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, |
629 | unsigned long npages); | |
578a59f1 | 630 | void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen); |
f7784b8e MT |
631 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
632 | struct kvm_memory_slot *memslot, | |
09170a49 | 633 | const struct kvm_userspace_memory_region *mem, |
7b6195a9 | 634 | enum kvm_mr_change change); |
f7784b8e | 635 | void kvm_arch_commit_memory_region(struct kvm *kvm, |
09170a49 | 636 | const struct kvm_userspace_memory_region *mem, |
8482644a | 637 | const struct kvm_memory_slot *old, |
f36f3f28 | 638 | const struct kvm_memory_slot *new, |
8482644a | 639 | enum kvm_mr_change change); |
db3fe4eb | 640 | bool kvm_largepages_enabled(void); |
54dee993 | 641 | void kvm_disable_largepages(void); |
2df72e9b MT |
642 | /* flush all memory translations */ |
643 | void kvm_arch_flush_shadow_all(struct kvm *kvm); | |
644 | /* flush memory translations pointing to 'slot' */ | |
645 | void kvm_arch_flush_shadow_memslot(struct kvm *kvm, | |
646 | struct kvm_memory_slot *slot); | |
a983fb23 | 647 | |
d9ef13c2 PB |
648 | int gfn_to_page_many_atomic(struct kvm_memory_slot *slot, gfn_t gfn, |
649 | struct page **pages, int nr_pages); | |
48987781 | 650 | |
954bbbc2 | 651 | struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); |
05da4558 | 652 | unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn); |
ba6a3541 | 653 | unsigned long gfn_to_hva_prot(struct kvm *kvm, gfn_t gfn, bool *writable); |
4d8b81ab | 654 | unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
64d83126 CD |
655 | unsigned long gfn_to_hva_memslot_prot(struct kvm_memory_slot *slot, gfn_t gfn, |
656 | bool *writable); | |
b4231d61 IE |
657 | void kvm_release_page_clean(struct page *page); |
658 | void kvm_release_page_dirty(struct page *page); | |
35149e21 AL |
659 | void kvm_set_page_accessed(struct page *page); |
660 | ||
ba049e93 DW |
661 | kvm_pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn); |
662 | kvm_pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn); | |
663 | kvm_pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault, | |
612819c3 | 664 | bool *writable); |
ba049e93 DW |
665 | kvm_pfn_t gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
666 | kvm_pfn_t gfn_to_pfn_memslot_atomic(struct kvm_memory_slot *slot, gfn_t gfn); | |
667 | kvm_pfn_t __gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn, | |
668 | bool atomic, bool *async, bool write_fault, | |
669 | bool *writable); | |
037d92dc | 670 | |
ba049e93 | 671 | void kvm_release_pfn_clean(kvm_pfn_t pfn); |
f7a6509f | 672 | void kvm_release_pfn_dirty(kvm_pfn_t pfn); |
ba049e93 DW |
673 | void kvm_set_pfn_dirty(kvm_pfn_t pfn); |
674 | void kvm_set_pfn_accessed(kvm_pfn_t pfn); | |
675 | void kvm_get_pfn(kvm_pfn_t pfn); | |
35149e21 | 676 | |
195aefde IE |
677 | int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, |
678 | int len); | |
7ec54588 MT |
679 | int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data, |
680 | unsigned long len); | |
195aefde | 681 | int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); |
4e335d9e PB |
682 | int kvm_read_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
683 | void *data, unsigned long len); | |
195aefde IE |
684 | int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, |
685 | int offset, int len); | |
686 | int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, | |
687 | unsigned long len); | |
4e335d9e PB |
688 | int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
689 | void *data, unsigned long len); | |
690 | int kvm_write_guest_offset_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, | |
c4f036fa JM |
691 | void *data, unsigned int offset, |
692 | unsigned long len); | |
4e335d9e PB |
693 | int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
694 | gpa_t gpa, unsigned long len); | |
195aefde IE |
695 | int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); |
696 | int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); | |
6aa8b732 | 697 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); |
33e94154 | 698 | bool kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); |
8f0b1ab6 | 699 | unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn); |
6aa8b732 AK |
700 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); |
701 | ||
8e73485c PB |
702 | struct kvm_memslots *kvm_vcpu_memslots(struct kvm_vcpu *vcpu); |
703 | struct kvm_memory_slot *kvm_vcpu_gfn_to_memslot(struct kvm_vcpu *vcpu, gfn_t gfn); | |
ba049e93 DW |
704 | kvm_pfn_t kvm_vcpu_gfn_to_pfn_atomic(struct kvm_vcpu *vcpu, gfn_t gfn); |
705 | kvm_pfn_t kvm_vcpu_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn); | |
8e73485c PB |
706 | struct page *kvm_vcpu_gfn_to_page(struct kvm_vcpu *vcpu, gfn_t gfn); |
707 | unsigned long kvm_vcpu_gfn_to_hva(struct kvm_vcpu *vcpu, gfn_t gfn); | |
708 | unsigned long kvm_vcpu_gfn_to_hva_prot(struct kvm_vcpu *vcpu, gfn_t gfn, bool *writable); | |
709 | int kvm_vcpu_read_guest_page(struct kvm_vcpu *vcpu, gfn_t gfn, void *data, int offset, | |
710 | int len); | |
711 | int kvm_vcpu_read_guest_atomic(struct kvm_vcpu *vcpu, gpa_t gpa, void *data, | |
712 | unsigned long len); | |
713 | int kvm_vcpu_read_guest(struct kvm_vcpu *vcpu, gpa_t gpa, void *data, | |
714 | unsigned long len); | |
715 | int kvm_vcpu_write_guest_page(struct kvm_vcpu *vcpu, gfn_t gfn, const void *data, | |
716 | int offset, int len); | |
717 | int kvm_vcpu_write_guest(struct kvm_vcpu *vcpu, gpa_t gpa, const void *data, | |
718 | unsigned long len); | |
719 | void kvm_vcpu_mark_page_dirty(struct kvm_vcpu *vcpu, gfn_t gfn); | |
720 | ||
20b7035c JS |
721 | void kvm_sigset_activate(struct kvm_vcpu *vcpu); |
722 | void kvm_sigset_deactivate(struct kvm_vcpu *vcpu); | |
723 | ||
8776e519 | 724 | void kvm_vcpu_block(struct kvm_vcpu *vcpu); |
3217f7c2 CD |
725 | void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu); |
726 | void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu); | |
178f02ff | 727 | bool kvm_vcpu_wake_up(struct kvm_vcpu *vcpu); |
b6d33834 | 728 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
fa93384f | 729 | int kvm_vcpu_yield_to(struct kvm_vcpu *target); |
199b5763 | 730 | void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu, bool usermode_vcpu_not_eligible); |
7702fd1f AK |
731 | void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); |
732 | void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); | |
a4ee1ca4 | 733 | |
d9e368d6 | 734 | void kvm_flush_remote_tlbs(struct kvm *kvm); |
2e53d63a | 735 | void kvm_reload_remote_mmus(struct kvm *kvm); |
445b8236 | 736 | bool kvm_make_all_cpus_request(struct kvm *kvm, unsigned int req); |
6aa8b732 | 737 | |
043405e1 CO |
738 | long kvm_arch_dev_ioctl(struct file *filp, |
739 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 CO |
740 | long kvm_arch_vcpu_ioctl(struct file *filp, |
741 | unsigned int ioctl, unsigned long arg); | |
5b1c1493 | 742 | int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf); |
018d00d2 | 743 | |
784aa3d7 | 744 | int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext); |
018d00d2 | 745 | |
5bb064dc ZX |
746 | int kvm_get_dirty_log(struct kvm *kvm, |
747 | struct kvm_dirty_log *log, int *is_dirty); | |
ba0513b5 MS |
748 | |
749 | int kvm_get_dirty_log_protect(struct kvm *kvm, | |
750 | struct kvm_dirty_log *log, bool *is_dirty); | |
751 | ||
3b0f1d01 | 752 | void kvm_arch_mmu_enable_log_dirty_pt_masked(struct kvm *kvm, |
ba0513b5 MS |
753 | struct kvm_memory_slot *slot, |
754 | gfn_t gfn_offset, | |
755 | unsigned long mask); | |
756 | ||
5bb064dc ZX |
757 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, |
758 | struct kvm_dirty_log *log); | |
759 | ||
aa2fbe6d YZ |
760 | int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_level, |
761 | bool line_status); | |
1fe779f8 CO |
762 | long kvm_arch_vm_ioctl(struct file *filp, |
763 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 | 764 | |
d0752060 HB |
765 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); |
766 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); | |
767 | ||
8b006791 ZX |
768 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, |
769 | struct kvm_translation *tr); | |
770 | ||
b6c7a5dc HB |
771 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); |
772 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); | |
773 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
774 | struct kvm_sregs *sregs); | |
775 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
776 | struct kvm_sregs *sregs); | |
62d9f0db MT |
777 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
778 | struct kvm_mp_state *mp_state); | |
779 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
780 | struct kvm_mp_state *mp_state); | |
d0bfb940 JK |
781 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
782 | struct kvm_guest_debug *dbg); | |
b6c7a5dc HB |
783 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); |
784 | ||
f8c16bba ZX |
785 | int kvm_arch_init(void *opaque); |
786 | void kvm_arch_exit(void); | |
043405e1 | 787 | |
e9b11c17 ZX |
788 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); |
789 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu); | |
790 | ||
e790d9ef RK |
791 | void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu); |
792 | ||
e9b11c17 ZX |
793 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu); |
794 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
795 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); | |
796 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); | |
26e5215f | 797 | int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu); |
31928aa5 | 798 | void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu); |
d40ccc62 | 799 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu); |
e9b11c17 | 800 | |
235539b4 LC |
801 | bool kvm_arch_has_vcpu_debugfs(void); |
802 | int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu); | |
803 | ||
13a34e06 RK |
804 | int kvm_arch_hardware_enable(void); |
805 | void kvm_arch_hardware_disable(void); | |
e9b11c17 ZX |
806 | int kvm_arch_hardware_setup(void); |
807 | void kvm_arch_hardware_unsetup(void); | |
808 | void kvm_arch_check_processor_compat(void *rtn); | |
1d737c8a | 809 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu); |
199b5763 | 810 | bool kvm_arch_vcpu_in_kernel(struct kvm_vcpu *vcpu); |
b6d33834 | 811 | int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu); |
050ee5a5 | 812 | bool kvm_arch_dy_runnable(struct kvm_vcpu *vcpu); |
e9b11c17 | 813 | |
d89f5eff JK |
814 | #ifndef __KVM_HAVE_ARCH_VM_ALLOC |
815 | static inline struct kvm *kvm_arch_alloc_vm(void) | |
816 | { | |
817 | return kzalloc(sizeof(struct kvm), GFP_KERNEL); | |
818 | } | |
819 | ||
820 | static inline void kvm_arch_free_vm(struct kvm *kvm) | |
821 | { | |
822 | kfree(kvm); | |
823 | } | |
824 | #endif | |
825 | ||
e0f0bbc5 AW |
826 | #ifdef __KVM_HAVE_ARCH_NONCOHERENT_DMA |
827 | void kvm_arch_register_noncoherent_dma(struct kvm *kvm); | |
828 | void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm); | |
829 | bool kvm_arch_has_noncoherent_dma(struct kvm *kvm); | |
830 | #else | |
831 | static inline void kvm_arch_register_noncoherent_dma(struct kvm *kvm) | |
832 | { | |
833 | } | |
834 | ||
835 | static inline void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm) | |
836 | { | |
837 | } | |
838 | ||
839 | static inline bool kvm_arch_has_noncoherent_dma(struct kvm *kvm) | |
840 | { | |
841 | return false; | |
842 | } | |
843 | #endif | |
5544eb9b PB |
844 | #ifdef __KVM_HAVE_ARCH_ASSIGNED_DEVICE |
845 | void kvm_arch_start_assignment(struct kvm *kvm); | |
846 | void kvm_arch_end_assignment(struct kvm *kvm); | |
847 | bool kvm_arch_has_assigned_device(struct kvm *kvm); | |
848 | #else | |
849 | static inline void kvm_arch_start_assignment(struct kvm *kvm) | |
850 | { | |
851 | } | |
852 | ||
853 | static inline void kvm_arch_end_assignment(struct kvm *kvm) | |
854 | { | |
855 | } | |
856 | ||
857 | static inline bool kvm_arch_has_assigned_device(struct kvm *kvm) | |
858 | { | |
859 | return false; | |
860 | } | |
861 | #endif | |
e0f0bbc5 | 862 | |
8577370f | 863 | static inline struct swait_queue_head *kvm_arch_vcpu_wq(struct kvm_vcpu *vcpu) |
b6d33834 | 864 | { |
2246f8b5 AG |
865 | #ifdef __KVM_HAVE_ARCH_WQP |
866 | return vcpu->arch.wqp; | |
867 | #else | |
b6d33834 | 868 | return &vcpu->wq; |
b6d33834 | 869 | #endif |
2246f8b5 | 870 | } |
b6d33834 | 871 | |
01c94e64 EA |
872 | #ifdef __KVM_HAVE_ARCH_INTC_INITIALIZED |
873 | /* | |
874 | * returns true if the virtual interrupt controller is initialized and | |
875 | * ready to accept virtual IRQ. On some architectures the virtual interrupt | |
876 | * controller is dynamically instantiated and this is not always true. | |
877 | */ | |
878 | bool kvm_arch_intc_initialized(struct kvm *kvm); | |
879 | #else | |
880 | static inline bool kvm_arch_intc_initialized(struct kvm *kvm) | |
881 | { | |
882 | return true; | |
883 | } | |
884 | #endif | |
885 | ||
e08b9637 | 886 | int kvm_arch_init_vm(struct kvm *kvm, unsigned long type); |
d19a9cd2 | 887 | void kvm_arch_destroy_vm(struct kvm *kvm); |
ad8ba2cd | 888 | void kvm_arch_sync_events(struct kvm *kvm); |
e9b11c17 | 889 | |
3d80840d | 890 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu); |
5736199a | 891 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
682c59a3 | 892 | |
ba049e93 | 893 | bool kvm_is_reserved_pfn(kvm_pfn_t pfn); |
c77fb9dc | 894 | |
62c476c7 BAY |
895 | struct kvm_irq_ack_notifier { |
896 | struct hlist_node link; | |
897 | unsigned gsi; | |
898 | void (*irq_acked)(struct kvm_irq_ack_notifier *kian); | |
899 | }; | |
900 | ||
9957c86d PM |
901 | int kvm_irq_map_gsi(struct kvm *kvm, |
902 | struct kvm_kernel_irq_routing_entry *entries, int gsi); | |
903 | int kvm_irq_map_chip_pin(struct kvm *kvm, unsigned irqchip, unsigned pin); | |
8ba918d4 | 904 | |
aa2fbe6d YZ |
905 | int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level, |
906 | bool line_status); | |
bd2b53b2 | 907 | int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm, |
aa2fbe6d | 908 | int irq_source_id, int level, bool line_status); |
b97e6de9 PB |
909 | int kvm_arch_set_irq_inatomic(struct kvm_kernel_irq_routing_entry *e, |
910 | struct kvm *kvm, int irq_source_id, | |
911 | int level, bool line_status); | |
c7c9c56c | 912 | bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin); |
ba1aefcd | 913 | void kvm_notify_acked_gsi(struct kvm *kvm, int gsi); |
44882eed | 914 | void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin); |
3de42dc0 XZ |
915 | void kvm_register_irq_ack_notifier(struct kvm *kvm, |
916 | struct kvm_irq_ack_notifier *kian); | |
fa40a821 MT |
917 | void kvm_unregister_irq_ack_notifier(struct kvm *kvm, |
918 | struct kvm_irq_ack_notifier *kian); | |
5550af4d SY |
919 | int kvm_request_irq_source_id(struct kvm *kvm); |
920 | void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id); | |
62c476c7 | 921 | |
9d4cba7f PM |
922 | /* |
923 | * search_memslots() and __gfn_to_memslot() are here because they are | |
924 | * used in non-modular code in arch/powerpc/kvm/book3s_hv_rm_mmu.c. | |
925 | * gfn_to_memslot() itself isn't here as an inline because that would | |
926 | * bloat other code too much. | |
927 | */ | |
928 | static inline struct kvm_memory_slot * | |
929 | search_memslots(struct kvm_memslots *slots, gfn_t gfn) | |
930 | { | |
9c1a5d38 | 931 | int start = 0, end = slots->used_slots; |
d4ae84a0 | 932 | int slot = atomic_read(&slots->lru_slot); |
9c1a5d38 IM |
933 | struct kvm_memory_slot *memslots = slots->memslots; |
934 | ||
935 | if (gfn >= memslots[slot].base_gfn && | |
936 | gfn < memslots[slot].base_gfn + memslots[slot].npages) | |
937 | return &memslots[slot]; | |
938 | ||
939 | while (start < end) { | |
940 | slot = start + (end - start) / 2; | |
941 | ||
942 | if (gfn >= memslots[slot].base_gfn) | |
943 | end = slot; | |
944 | else | |
945 | start = slot + 1; | |
946 | } | |
947 | ||
948 | if (gfn >= memslots[start].base_gfn && | |
949 | gfn < memslots[start].base_gfn + memslots[start].npages) { | |
950 | atomic_set(&slots->lru_slot, start); | |
951 | return &memslots[start]; | |
952 | } | |
9d4cba7f PM |
953 | |
954 | return NULL; | |
955 | } | |
956 | ||
957 | static inline struct kvm_memory_slot * | |
958 | __gfn_to_memslot(struct kvm_memslots *slots, gfn_t gfn) | |
959 | { | |
960 | return search_memslots(slots, gfn); | |
961 | } | |
962 | ||
66a03505 GS |
963 | static inline unsigned long |
964 | __gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn) | |
965 | { | |
966 | return slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE; | |
967 | } | |
968 | ||
0ee8dcb8 XG |
969 | static inline int memslot_id(struct kvm *kvm, gfn_t gfn) |
970 | { | |
971 | return gfn_to_memslot(kvm, gfn)->id; | |
972 | } | |
973 | ||
d19a748b TY |
974 | static inline gfn_t |
975 | hva_to_gfn_memslot(unsigned long hva, struct kvm_memory_slot *slot) | |
887c08ac | 976 | { |
d19a748b TY |
977 | gfn_t gfn_offset = (hva - slot->userspace_addr) >> PAGE_SHIFT; |
978 | ||
979 | return slot->base_gfn + gfn_offset; | |
887c08ac XG |
980 | } |
981 | ||
1755fbcc AK |
982 | static inline gpa_t gfn_to_gpa(gfn_t gfn) |
983 | { | |
984 | return (gpa_t)gfn << PAGE_SHIFT; | |
985 | } | |
6aa8b732 | 986 | |
c30a358d JR |
987 | static inline gfn_t gpa_to_gfn(gpa_t gpa) |
988 | { | |
989 | return (gfn_t)(gpa >> PAGE_SHIFT); | |
990 | } | |
991 | ||
ba049e93 | 992 | static inline hpa_t pfn_to_hpa(kvm_pfn_t pfn) |
62c476c7 BAY |
993 | { |
994 | return (hpa_t)pfn << PAGE_SHIFT; | |
995 | } | |
996 | ||
5e2f30b7 DH |
997 | static inline struct page *kvm_vcpu_gpa_to_page(struct kvm_vcpu *vcpu, |
998 | gpa_t gpa) | |
999 | { | |
1000 | return kvm_vcpu_gfn_to_page(vcpu, gpa_to_gfn(gpa)); | |
1001 | } | |
1002 | ||
dfeec843 HC |
1003 | static inline bool kvm_is_error_gpa(struct kvm *kvm, gpa_t gpa) |
1004 | { | |
1005 | unsigned long hva = gfn_to_hva(kvm, gpa_to_gfn(gpa)); | |
1006 | ||
1007 | return kvm_is_error_hva(hva); | |
1008 | } | |
1009 | ||
ba1389b7 AK |
1010 | enum kvm_stat_kind { |
1011 | KVM_STAT_VM, | |
1012 | KVM_STAT_VCPU, | |
1013 | }; | |
1014 | ||
536a6f88 JF |
1015 | struct kvm_stat_data { |
1016 | int offset; | |
4eaa9501 | 1017 | int mode; |
536a6f88 JF |
1018 | struct kvm *kvm; |
1019 | }; | |
1020 | ||
417bc304 HB |
1021 | struct kvm_stats_debugfs_item { |
1022 | const char *name; | |
1023 | int offset; | |
ba1389b7 | 1024 | enum kvm_stat_kind kind; |
4eaa9501 | 1025 | int mode; |
417bc304 HB |
1026 | }; |
1027 | extern struct kvm_stats_debugfs_item debugfs_entries[]; | |
76f7c879 | 1028 | extern struct dentry *kvm_debugfs_dir; |
d4c9ff2d | 1029 | |
36c1ed82 | 1030 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
8ca40a70 | 1031 | static inline int mmu_notifier_retry(struct kvm *kvm, unsigned long mmu_seq) |
e930bffe | 1032 | { |
8ca40a70 | 1033 | if (unlikely(kvm->mmu_notifier_count)) |
e930bffe AA |
1034 | return 1; |
1035 | /* | |
a355aa54 PM |
1036 | * Ensure the read of mmu_notifier_count happens before the read |
1037 | * of mmu_notifier_seq. This interacts with the smp_wmb() in | |
1038 | * mmu_notifier_invalidate_range_end to make sure that the caller | |
1039 | * either sees the old (non-zero) value of mmu_notifier_count or | |
1040 | * the new (incremented) value of mmu_notifier_seq. | |
1041 | * PowerPC Book3s HV KVM calls this under a per-page lock | |
1042 | * rather than under kvm->mmu_lock, for scalability, so | |
1043 | * can't rely on kvm->mmu_lock to keep things ordered. | |
e930bffe | 1044 | */ |
a355aa54 | 1045 | smp_rmb(); |
8ca40a70 | 1046 | if (kvm->mmu_notifier_seq != mmu_seq) |
e930bffe AA |
1047 | return 1; |
1048 | return 0; | |
1049 | } | |
1050 | #endif | |
1051 | ||
a725d56a | 1052 | #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING |
399ec807 | 1053 | |
f3133d65 | 1054 | #define KVM_MAX_IRQ_ROUTES 4096 /* might need extension/rework in the future */ |
399ec807 | 1055 | |
5c0aea0e | 1056 | bool kvm_arch_can_set_irq_routing(struct kvm *kvm); |
399ec807 AK |
1057 | int kvm_set_irq_routing(struct kvm *kvm, |
1058 | const struct kvm_irq_routing_entry *entries, | |
1059 | unsigned nr, | |
1060 | unsigned flags); | |
c63cf538 RK |
1061 | int kvm_set_routing_entry(struct kvm *kvm, |
1062 | struct kvm_kernel_irq_routing_entry *e, | |
e8cde093 | 1063 | const struct kvm_irq_routing_entry *ue); |
399ec807 AK |
1064 | void kvm_free_irq_routing(struct kvm *kvm); |
1065 | ||
1066 | #else | |
1067 | ||
1068 | static inline void kvm_free_irq_routing(struct kvm *kvm) {} | |
1069 | ||
1070 | #endif | |
1071 | ||
297e2105 PM |
1072 | int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi); |
1073 | ||
721eecbf GH |
1074 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
1075 | ||
d34e6b17 | 1076 | void kvm_eventfd_init(struct kvm *kvm); |
914daba8 AG |
1077 | int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args); |
1078 | ||
297e2105 | 1079 | #ifdef CONFIG_HAVE_KVM_IRQFD |
d4db2935 | 1080 | int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args); |
721eecbf | 1081 | void kvm_irqfd_release(struct kvm *kvm); |
9957c86d | 1082 | void kvm_irq_routing_update(struct kvm *); |
914daba8 AG |
1083 | #else |
1084 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) | |
1085 | { | |
1086 | return -EINVAL; | |
1087 | } | |
1088 | ||
1089 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
1090 | #endif | |
721eecbf GH |
1091 | |
1092 | #else | |
1093 | ||
d34e6b17 | 1094 | static inline void kvm_eventfd_init(struct kvm *kvm) {} |
bd2b53b2 | 1095 | |
d4db2935 | 1096 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) |
721eecbf GH |
1097 | { |
1098 | return -EINVAL; | |
1099 | } | |
1100 | ||
1101 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
bd2b53b2 | 1102 | |
27923eb1 | 1103 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
9957c86d | 1104 | static inline void kvm_irq_routing_update(struct kvm *kvm) |
bd2b53b2 | 1105 | { |
bd2b53b2 | 1106 | } |
27923eb1 | 1107 | #endif |
bd2b53b2 | 1108 | |
d34e6b17 GH |
1109 | static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) |
1110 | { | |
1111 | return -ENOSYS; | |
1112 | } | |
721eecbf GH |
1113 | |
1114 | #endif /* CONFIG_HAVE_KVM_EVENTFD */ | |
1115 | ||
e0dba857 SO |
1116 | void kvm_arch_irq_routing_update(struct kvm *kvm); |
1117 | ||
a8eeb04a AK |
1118 | static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu) |
1119 | { | |
2e4682ba PB |
1120 | /* |
1121 | * Ensure the rest of the request is published to kvm_check_request's | |
1122 | * caller. Paired with the smp_mb__after_atomic in kvm_check_request. | |
1123 | */ | |
1124 | smp_wmb(); | |
930f7fd6 | 1125 | set_bit(req & KVM_REQUEST_MASK, &vcpu->requests); |
a8eeb04a AK |
1126 | } |
1127 | ||
2fa6e1e1 RK |
1128 | static inline bool kvm_request_pending(struct kvm_vcpu *vcpu) |
1129 | { | |
1130 | return READ_ONCE(vcpu->requests); | |
1131 | } | |
1132 | ||
72875d8a RK |
1133 | static inline bool kvm_test_request(int req, struct kvm_vcpu *vcpu) |
1134 | { | |
930f7fd6 | 1135 | return test_bit(req & KVM_REQUEST_MASK, &vcpu->requests); |
72875d8a RK |
1136 | } |
1137 | ||
1138 | static inline void kvm_clear_request(int req, struct kvm_vcpu *vcpu) | |
1139 | { | |
930f7fd6 | 1140 | clear_bit(req & KVM_REQUEST_MASK, &vcpu->requests); |
72875d8a RK |
1141 | } |
1142 | ||
a8eeb04a AK |
1143 | static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu) |
1144 | { | |
72875d8a RK |
1145 | if (kvm_test_request(req, vcpu)) { |
1146 | kvm_clear_request(req, vcpu); | |
2e4682ba PB |
1147 | |
1148 | /* | |
1149 | * Ensure the rest of the request is visible to kvm_check_request's | |
1150 | * caller. Paired with the smp_wmb in kvm_make_request. | |
1151 | */ | |
1152 | smp_mb__after_atomic(); | |
0719837c AK |
1153 | return true; |
1154 | } else { | |
1155 | return false; | |
1156 | } | |
a8eeb04a AK |
1157 | } |
1158 | ||
8b415dcd GL |
1159 | extern bool kvm_rebooting; |
1160 | ||
ec76d819 SJS |
1161 | extern unsigned int halt_poll_ns; |
1162 | extern unsigned int halt_poll_ns_grow; | |
1163 | extern unsigned int halt_poll_ns_shrink; | |
1164 | ||
852b6d57 SW |
1165 | struct kvm_device { |
1166 | struct kvm_device_ops *ops; | |
1167 | struct kvm *kvm; | |
852b6d57 | 1168 | void *private; |
07f0a7bd | 1169 | struct list_head vm_node; |
852b6d57 SW |
1170 | }; |
1171 | ||
1172 | /* create, destroy, and name are mandatory */ | |
1173 | struct kvm_device_ops { | |
1174 | const char *name; | |
a28ebea2 CD |
1175 | |
1176 | /* | |
1177 | * create is called holding kvm->lock and any operations not suitable | |
1178 | * to do while holding the lock should be deferred to init (see | |
1179 | * below). | |
1180 | */ | |
852b6d57 SW |
1181 | int (*create)(struct kvm_device *dev, u32 type); |
1182 | ||
023e9fdd CD |
1183 | /* |
1184 | * init is called after create if create is successful and is called | |
1185 | * outside of holding kvm->lock. | |
1186 | */ | |
1187 | void (*init)(struct kvm_device *dev); | |
1188 | ||
852b6d57 SW |
1189 | /* |
1190 | * Destroy is responsible for freeing dev. | |
1191 | * | |
1192 | * Destroy may be called before or after destructors are called | |
1193 | * on emulated I/O regions, depending on whether a reference is | |
1194 | * held by a vcpu or other kvm component that gets destroyed | |
1195 | * after the emulated I/O. | |
1196 | */ | |
1197 | void (*destroy)(struct kvm_device *dev); | |
1198 | ||
1199 | int (*set_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1200 | int (*get_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1201 | int (*has_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1202 | long (*ioctl)(struct kvm_device *dev, unsigned int ioctl, | |
1203 | unsigned long arg); | |
1204 | }; | |
1205 | ||
1206 | void kvm_device_get(struct kvm_device *dev); | |
1207 | void kvm_device_put(struct kvm_device *dev); | |
1208 | struct kvm_device *kvm_device_from_filp(struct file *filp); | |
d60eacb0 | 1209 | int kvm_register_device_ops(struct kvm_device_ops *ops, u32 type); |
571ee1b6 | 1210 | void kvm_unregister_device_ops(u32 type); |
852b6d57 | 1211 | |
5df554ad | 1212 | extern struct kvm_device_ops kvm_mpic_ops; |
ea2f83a7 | 1213 | extern struct kvm_device_ops kvm_arm_vgic_v2_ops; |
a0675c25 | 1214 | extern struct kvm_device_ops kvm_arm_vgic_v3_ops; |
5df554ad | 1215 | |
4c088493 R |
1216 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
1217 | ||
1218 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
1219 | { | |
1220 | vcpu->spin_loop.in_spin_loop = val; | |
1221 | } | |
1222 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
1223 | { | |
1224 | vcpu->spin_loop.dy_eligible = val; | |
1225 | } | |
1226 | ||
1227 | #else /* !CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ | |
1228 | ||
1229 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
1230 | { | |
1231 | } | |
1232 | ||
1233 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
1234 | { | |
1235 | } | |
4c088493 | 1236 | #endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ |
1a02b270 EA |
1237 | |
1238 | #ifdef CONFIG_HAVE_KVM_IRQ_BYPASS | |
14717e20 | 1239 | bool kvm_arch_has_irq_bypass(void); |
1a02b270 EA |
1240 | int kvm_arch_irq_bypass_add_producer(struct irq_bypass_consumer *, |
1241 | struct irq_bypass_producer *); | |
1242 | void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer *, | |
1243 | struct irq_bypass_producer *); | |
1244 | void kvm_arch_irq_bypass_stop(struct irq_bypass_consumer *); | |
1245 | void kvm_arch_irq_bypass_start(struct irq_bypass_consumer *); | |
f70c20aa FW |
1246 | int kvm_arch_update_irqfd_routing(struct kvm *kvm, unsigned int host_irq, |
1247 | uint32_t guest_irq, bool set); | |
1a02b270 | 1248 | #endif /* CONFIG_HAVE_KVM_IRQ_BYPASS */ |
35181e86 | 1249 | |
3491caf2 CB |
1250 | #ifdef CONFIG_HAVE_KVM_INVALID_WAKEUPS |
1251 | /* If we wakeup during the poll time, was it a sucessful poll? */ | |
1252 | static inline bool vcpu_valid_wakeup(struct kvm_vcpu *vcpu) | |
1253 | { | |
1254 | return vcpu->valid_wakeup; | |
1255 | } | |
1256 | ||
1257 | #else | |
1258 | static inline bool vcpu_valid_wakeup(struct kvm_vcpu *vcpu) | |
1259 | { | |
1260 | return true; | |
1261 | } | |
1262 | #endif /* CONFIG_HAVE_KVM_INVALID_WAKEUPS */ | |
1263 | ||
ebce4f76 JS |
1264 | typedef int (*kvm_vm_thread_fn_t)(struct kvm *kvm, uintptr_t data); |
1265 | ||
1266 | int kvm_vm_create_worker_thread(struct kvm *kvm, kvm_vm_thread_fn_t thread_fn, | |
1267 | uintptr_t data, const char *name, | |
1268 | struct task_struct **thread_ptr); | |
1269 | ||
bfd99ff5 | 1270 | #endif |