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edf88417 AK |
1 | #ifndef __KVM_HOST_H |
2 | #define __KVM_HOST_H | |
6aa8b732 AK |
3 | |
4 | /* | |
5 | * This work is licensed under the terms of the GNU GPL, version 2. See | |
6 | * the COPYING file in the top-level directory. | |
7 | */ | |
8 | ||
9 | #include <linux/types.h> | |
e56a7a28 | 10 | #include <linux/hardirq.h> |
6aa8b732 AK |
11 | #include <linux/list.h> |
12 | #include <linux/mutex.h> | |
13 | #include <linux/spinlock.h> | |
06ff0d37 MR |
14 | #include <linux/signal.h> |
15 | #include <linux/sched.h> | |
187f1882 | 16 | #include <linux/bug.h> |
6aa8b732 | 17 | #include <linux/mm.h> |
b297e672 | 18 | #include <linux/mmu_notifier.h> |
15ad7146 | 19 | #include <linux/preempt.h> |
0937c48d | 20 | #include <linux/msi.h> |
d89f5eff | 21 | #include <linux/slab.h> |
bd2b53b2 | 22 | #include <linux/rcupdate.h> |
bd80158a | 23 | #include <linux/ratelimit.h> |
83f09228 | 24 | #include <linux/err.h> |
c11f11fc | 25 | #include <linux/irqflags.h> |
521921ba | 26 | #include <linux/context_tracking.h> |
e8edc6e0 | 27 | #include <asm/signal.h> |
6aa8b732 | 28 | |
6aa8b732 | 29 | #include <linux/kvm.h> |
102d8325 | 30 | #include <linux/kvm_para.h> |
6aa8b732 | 31 | |
edf88417 | 32 | #include <linux/kvm_types.h> |
d77a39d9 | 33 | |
edf88417 | 34 | #include <asm/kvm_host.h> |
d657a98e | 35 | |
cef4dea0 AK |
36 | #ifndef KVM_MMIO_SIZE |
37 | #define KVM_MMIO_SIZE 8 | |
38 | #endif | |
39 | ||
67b29204 XG |
40 | /* |
41 | * The bit 16 ~ bit 31 of kvm_memory_region::flags are internally used | |
42 | * in kvm, other bits are visible for userspace which are defined in | |
43 | * include/linux/kvm_h. | |
44 | */ | |
45 | #define KVM_MEMSLOT_INVALID (1UL << 16) | |
46 | ||
87da7e66 XG |
47 | /* Two fragments for cross MMIO pages. */ |
48 | #define KVM_MAX_MMIO_FRAGMENTS 2 | |
f78146b0 | 49 | |
9c5b1172 XG |
50 | /* |
51 | * For the normal pfn, the highest 12 bits should be zero, | |
81c52c56 XG |
52 | * so we can mask bit 62 ~ bit 52 to indicate the error pfn, |
53 | * mask bit 63 to indicate the noslot pfn. | |
9c5b1172 | 54 | */ |
81c52c56 XG |
55 | #define KVM_PFN_ERR_MASK (0x7ffULL << 52) |
56 | #define KVM_PFN_ERR_NOSLOT_MASK (0xfffULL << 52) | |
57 | #define KVM_PFN_NOSLOT (0x1ULL << 63) | |
9c5b1172 XG |
58 | |
59 | #define KVM_PFN_ERR_FAULT (KVM_PFN_ERR_MASK) | |
60 | #define KVM_PFN_ERR_HWPOISON (KVM_PFN_ERR_MASK + 1) | |
81c52c56 | 61 | #define KVM_PFN_ERR_RO_FAULT (KVM_PFN_ERR_MASK + 2) |
6c8ee57b | 62 | |
81c52c56 XG |
63 | /* |
64 | * error pfns indicate that the gfn is in slot but faild to | |
65 | * translate it to pfn on host. | |
66 | */ | |
9c5b1172 | 67 | static inline bool is_error_pfn(pfn_t pfn) |
83f09228 | 68 | { |
9c5b1172 | 69 | return !!(pfn & KVM_PFN_ERR_MASK); |
83f09228 XG |
70 | } |
71 | ||
81c52c56 XG |
72 | /* |
73 | * error_noslot pfns indicate that the gfn can not be | |
74 | * translated to pfn - it is not in slot or failed to | |
75 | * translate it to pfn. | |
76 | */ | |
77 | static inline bool is_error_noslot_pfn(pfn_t pfn) | |
83f09228 | 78 | { |
81c52c56 | 79 | return !!(pfn & KVM_PFN_ERR_NOSLOT_MASK); |
83f09228 XG |
80 | } |
81 | ||
81c52c56 XG |
82 | /* noslot pfn indicates that the gfn is not in slot. */ |
83 | static inline bool is_noslot_pfn(pfn_t pfn) | |
83f09228 | 84 | { |
81c52c56 | 85 | return pfn == KVM_PFN_NOSLOT; |
83f09228 XG |
86 | } |
87 | ||
bf640876 DD |
88 | /* |
89 | * architectures with KVM_HVA_ERR_BAD other than PAGE_OFFSET (e.g. s390) | |
90 | * provide own defines and kvm_is_error_hva | |
91 | */ | |
92 | #ifndef KVM_HVA_ERR_BAD | |
93 | ||
7068d097 XG |
94 | #define KVM_HVA_ERR_BAD (PAGE_OFFSET) |
95 | #define KVM_HVA_ERR_RO_BAD (PAGE_OFFSET + PAGE_SIZE) | |
ca3a490c XG |
96 | |
97 | static inline bool kvm_is_error_hva(unsigned long addr) | |
98 | { | |
7068d097 | 99 | return addr >= PAGE_OFFSET; |
ca3a490c XG |
100 | } |
101 | ||
bf640876 DD |
102 | #endif |
103 | ||
6cede2e6 XG |
104 | #define KVM_ERR_PTR_BAD_PAGE (ERR_PTR(-ENOENT)) |
105 | ||
9c5b1172 | 106 | static inline bool is_error_page(struct page *page) |
6cede2e6 XG |
107 | { |
108 | return IS_ERR(page); | |
109 | } | |
110 | ||
d9e368d6 AK |
111 | /* |
112 | * vcpu->requests bit members | |
113 | */ | |
3176bc3e | 114 | #define KVM_REQ_TLB_FLUSH 0 |
2f52d58c | 115 | #define KVM_REQ_MIGRATE_TIMER 1 |
b209749f | 116 | #define KVM_REQ_REPORT_TPR_ACCESS 2 |
2e53d63a | 117 | #define KVM_REQ_MMU_RELOAD 3 |
71c4dfaf | 118 | #define KVM_REQ_TRIPLE_FAULT 4 |
06e05645 | 119 | #define KVM_REQ_PENDING_TIMER 5 |
d7690175 | 120 | #define KVM_REQ_UNHALT 6 |
4731d4c7 | 121 | #define KVM_REQ_MMU_SYNC 7 |
34c238a1 | 122 | #define KVM_REQ_CLOCK_UPDATE 8 |
32f88400 | 123 | #define KVM_REQ_KICK 9 |
02daab21 | 124 | #define KVM_REQ_DEACTIVATE_FPU 10 |
3842d135 | 125 | #define KVM_REQ_EVENT 11 |
af585b92 | 126 | #define KVM_REQ_APF_HALT 12 |
c9aaa895 | 127 | #define KVM_REQ_STEAL_UPDATE 13 |
7460fb4a | 128 | #define KVM_REQ_NMI 14 |
730dca42 JK |
129 | #define KVM_REQ_PMU 15 |
130 | #define KVM_REQ_PMI 16 | |
131 | #define KVM_REQ_WATCHDOG 17 | |
132 | #define KVM_REQ_MASTERCLOCK_UPDATE 18 | |
133 | #define KVM_REQ_MCLOCK_INPROGRESS 19 | |
134 | #define KVM_REQ_EPR_EXIT 20 | |
135 | #define KVM_REQ_SCAN_IOAPIC 21 | |
0061d53d | 136 | #define KVM_REQ_GLOBAL_CLOCK_UPDATE 22 |
8ad35755 DH |
137 | #define KVM_REQ_ENABLE_IBS 23 |
138 | #define KVM_REQ_DISABLE_IBS 24 | |
4256f43f | 139 | #define KVM_REQ_APIC_PAGE_RELOAD 25 |
6aa8b732 | 140 | |
7a84428a AW |
141 | #define KVM_USERSPACE_IRQ_SOURCE_ID 0 |
142 | #define KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID 1 | |
5550af4d | 143 | |
c16f862d | 144 | extern struct kmem_cache *kvm_vcpu_cache; |
6aa8b732 | 145 | |
2f303b74 | 146 | extern spinlock_t kvm_lock; |
fc1b7492 GL |
147 | extern struct list_head vm_list; |
148 | ||
743eeb0b SL |
149 | struct kvm_io_range { |
150 | gpa_t addr; | |
151 | int len; | |
152 | struct kvm_io_device *dev; | |
153 | }; | |
154 | ||
786a9f88 | 155 | #define NR_IOBUS_DEVS 1000 |
a1300716 | 156 | |
2eeb2e94 | 157 | struct kvm_io_bus { |
6ea34c9b AK |
158 | int dev_count; |
159 | int ioeventfd_count; | |
a1300716 | 160 | struct kvm_io_range range[]; |
2eeb2e94 GH |
161 | }; |
162 | ||
e93f8a0f MT |
163 | enum kvm_bus { |
164 | KVM_MMIO_BUS, | |
165 | KVM_PIO_BUS, | |
060f0ce6 | 166 | KVM_VIRTIO_CCW_NOTIFY_BUS, |
68c3b4d1 | 167 | KVM_FAST_MMIO_BUS, |
e93f8a0f MT |
168 | KVM_NR_BUSES |
169 | }; | |
170 | ||
171 | int kvm_io_bus_write(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, | |
172 | int len, const void *val); | |
126a5af5 CH |
173 | int kvm_io_bus_write_cookie(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, |
174 | int len, const void *val, long cookie); | |
e93f8a0f | 175 | int kvm_io_bus_read(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, int len, |
bda9020e | 176 | void *val); |
743eeb0b SL |
177 | int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, |
178 | int len, struct kvm_io_device *dev); | |
e93f8a0f MT |
179 | int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx, |
180 | struct kvm_io_device *dev); | |
2eeb2e94 | 181 | |
af585b92 GN |
182 | #ifdef CONFIG_KVM_ASYNC_PF |
183 | struct kvm_async_pf { | |
184 | struct work_struct work; | |
185 | struct list_head link; | |
186 | struct list_head queue; | |
187 | struct kvm_vcpu *vcpu; | |
188 | struct mm_struct *mm; | |
189 | gva_t gva; | |
190 | unsigned long addr; | |
191 | struct kvm_arch_async_pf arch; | |
f2e10669 | 192 | bool wakeup_all; |
af585b92 GN |
193 | }; |
194 | ||
195 | void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu); | |
196 | void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu); | |
e0ead41a | 197 | int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, unsigned long hva, |
af585b92 | 198 | struct kvm_arch_async_pf *arch); |
344d9588 | 199 | int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu); |
af585b92 GN |
200 | #endif |
201 | ||
234b239b ALC |
202 | /* |
203 | * Carry out a gup that requires IO. Allow the mm to relinquish the mmap | |
204 | * semaphore if the filemap/swap has to wait on a page lock. pagep == NULL | |
205 | * controls whether we retry the gup one more time to completion in that case. | |
206 | * Typically this is called after a FAULT_FLAG_RETRY_NOWAIT in the main tdp | |
207 | * handler. | |
208 | */ | |
209 | int kvm_get_user_page_io(struct task_struct *tsk, struct mm_struct *mm, | |
210 | unsigned long addr, bool write_fault, | |
211 | struct page **pagep); | |
212 | ||
6b7e2d09 XG |
213 | enum { |
214 | OUTSIDE_GUEST_MODE, | |
215 | IN_GUEST_MODE, | |
c142786c AK |
216 | EXITING_GUEST_MODE, |
217 | READING_SHADOW_PAGE_TABLES, | |
6b7e2d09 XG |
218 | }; |
219 | ||
f78146b0 AK |
220 | /* |
221 | * Sometimes a large or cross-page mmio needs to be broken up into separate | |
222 | * exits for userspace servicing. | |
223 | */ | |
224 | struct kvm_mmio_fragment { | |
225 | gpa_t gpa; | |
226 | void *data; | |
227 | unsigned len; | |
228 | }; | |
229 | ||
d17fbbf7 ZX |
230 | struct kvm_vcpu { |
231 | struct kvm *kvm; | |
31bb117e | 232 | #ifdef CONFIG_PREEMPT_NOTIFIERS |
d17fbbf7 | 233 | struct preempt_notifier preempt_notifier; |
31bb117e | 234 | #endif |
6b7e2d09 | 235 | int cpu; |
d17fbbf7 | 236 | int vcpu_id; |
6b7e2d09 XG |
237 | int srcu_idx; |
238 | int mode; | |
d17fbbf7 | 239 | unsigned long requests; |
d0bfb940 | 240 | unsigned long guest_debug; |
6b7e2d09 XG |
241 | |
242 | struct mutex mutex; | |
243 | struct kvm_run *run; | |
f656ce01 | 244 | |
d17fbbf7 | 245 | int fpu_active; |
2acf923e | 246 | int guest_fpu_loaded, guest_xcr0_loaded; |
d17fbbf7 | 247 | wait_queue_head_t wq; |
34bb10b7 | 248 | struct pid *pid; |
d17fbbf7 ZX |
249 | int sigset_active; |
250 | sigset_t sigset; | |
251 | struct kvm_vcpu_stat stat; | |
252 | ||
34c16eec | 253 | #ifdef CONFIG_HAS_IOMEM |
d17fbbf7 ZX |
254 | int mmio_needed; |
255 | int mmio_read_completed; | |
256 | int mmio_is_write; | |
f78146b0 AK |
257 | int mmio_cur_fragment; |
258 | int mmio_nr_fragments; | |
259 | struct kvm_mmio_fragment mmio_fragments[KVM_MAX_MMIO_FRAGMENTS]; | |
34c16eec | 260 | #endif |
1165f5fe | 261 | |
af585b92 GN |
262 | #ifdef CONFIG_KVM_ASYNC_PF |
263 | struct { | |
264 | u32 queued; | |
265 | struct list_head queue; | |
266 | struct list_head done; | |
267 | spinlock_t lock; | |
268 | } async_pf; | |
269 | #endif | |
270 | ||
4c088493 R |
271 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
272 | /* | |
273 | * Cpu relax intercept or pause loop exit optimization | |
274 | * in_spin_loop: set when a vcpu does a pause loop exit | |
275 | * or cpu relax intercepted. | |
276 | * dy_eligible: indicates whether vcpu is eligible for directed yield. | |
277 | */ | |
278 | struct { | |
279 | bool in_spin_loop; | |
280 | bool dy_eligible; | |
281 | } spin_loop; | |
282 | #endif | |
3a08a8f9 | 283 | bool preempted; |
d657a98e ZX |
284 | struct kvm_vcpu_arch arch; |
285 | }; | |
286 | ||
6b7e2d09 XG |
287 | static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu) |
288 | { | |
289 | return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE); | |
290 | } | |
291 | ||
660c22c4 TY |
292 | /* |
293 | * Some of the bitops functions do not support too long bitmaps. | |
294 | * This number must be determined not to exceed such limits. | |
295 | */ | |
296 | #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1) | |
297 | ||
6aa8b732 AK |
298 | struct kvm_memory_slot { |
299 | gfn_t base_gfn; | |
300 | unsigned long npages; | |
6aa8b732 | 301 | unsigned long *dirty_bitmap; |
db3fe4eb | 302 | struct kvm_arch_memory_slot arch; |
8a7ae055 | 303 | unsigned long userspace_addr; |
6104f472 | 304 | u32 flags; |
1e702d9a | 305 | short id; |
6aa8b732 AK |
306 | }; |
307 | ||
87bf6e7d TY |
308 | static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot) |
309 | { | |
310 | return ALIGN(memslot->npages, BITS_PER_LONG) / 8; | |
311 | } | |
312 | ||
84223598 CH |
313 | struct kvm_s390_adapter_int { |
314 | u64 ind_addr; | |
315 | u64 summary_addr; | |
316 | u64 ind_offset; | |
317 | u32 summary_offset; | |
318 | u32 adapter_id; | |
319 | }; | |
320 | ||
399ec807 AK |
321 | struct kvm_kernel_irq_routing_entry { |
322 | u32 gsi; | |
5116d8f6 | 323 | u32 type; |
4925663a | 324 | int (*set)(struct kvm_kernel_irq_routing_entry *e, |
aa2fbe6d YZ |
325 | struct kvm *kvm, int irq_source_id, int level, |
326 | bool line_status); | |
399ec807 AK |
327 | union { |
328 | struct { | |
329 | unsigned irqchip; | |
330 | unsigned pin; | |
331 | } irqchip; | |
79950e10 | 332 | struct msi_msg msi; |
84223598 | 333 | struct kvm_s390_adapter_int adapter; |
399ec807 | 334 | }; |
46e624b9 GN |
335 | struct hlist_node link; |
336 | }; | |
337 | ||
0743247f AW |
338 | #ifndef KVM_PRIVATE_MEM_SLOTS |
339 | #define KVM_PRIVATE_MEM_SLOTS 0 | |
340 | #endif | |
341 | ||
93a5cef0 | 342 | #ifndef KVM_MEM_SLOTS_NUM |
bbacc0c1 | 343 | #define KVM_MEM_SLOTS_NUM (KVM_USER_MEM_SLOTS + KVM_PRIVATE_MEM_SLOTS) |
93a5cef0 XG |
344 | #endif |
345 | ||
bf3e05bc XG |
346 | /* |
347 | * Note: | |
348 | * memslots are not sorted by id anymore, please use id_to_memslot() | |
349 | * to get the memslot by its id. | |
350 | */ | |
46a26bf5 | 351 | struct kvm_memslots { |
49c7754c | 352 | u64 generation; |
93a5cef0 | 353 | struct kvm_memory_slot memslots[KVM_MEM_SLOTS_NUM]; |
f85e2cb5 | 354 | /* The mapping table from slot id to the index in memslots[]. */ |
1e702d9a | 355 | short id_to_index[KVM_MEM_SLOTS_NUM]; |
46a26bf5 MT |
356 | }; |
357 | ||
6aa8b732 | 358 | struct kvm { |
aaee2c94 | 359 | spinlock_t mmu_lock; |
79fac95e | 360 | struct mutex slots_lock; |
6d4e4c4f | 361 | struct mm_struct *mm; /* userspace tied to this vm */ |
46a26bf5 | 362 | struct kvm_memslots *memslots; |
bc6678a3 | 363 | struct srcu_struct srcu; |
719d93cd | 364 | struct srcu_struct irq_srcu; |
73880c80 GN |
365 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
366 | u32 bsp_vcpu_id; | |
73880c80 | 367 | #endif |
fb3f0f51 | 368 | struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; |
73880c80 | 369 | atomic_t online_vcpus; |
217ece61 | 370 | int last_boosted_vcpu; |
133de902 | 371 | struct list_head vm_list; |
60eead79 | 372 | struct mutex lock; |
e93f8a0f | 373 | struct kvm_io_bus *buses[KVM_NR_BUSES]; |
721eecbf GH |
374 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
375 | struct { | |
376 | spinlock_t lock; | |
377 | struct list_head items; | |
7a84428a AW |
378 | struct list_head resampler_list; |
379 | struct mutex resampler_lock; | |
721eecbf | 380 | } irqfds; |
d34e6b17 | 381 | struct list_head ioeventfds; |
721eecbf | 382 | #endif |
ba1389b7 | 383 | struct kvm_vm_stat stat; |
d69fb81f | 384 | struct kvm_arch arch; |
d39f13b0 | 385 | atomic_t users_count; |
5f94c174 | 386 | #ifdef KVM_COALESCED_MMIO_PAGE_OFFSET |
5f94c174 | 387 | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; |
2b3c246a SL |
388 | spinlock_t ring_lock; |
389 | struct list_head coalesced_zones; | |
5f94c174 | 390 | #endif |
e930bffe | 391 | |
60eead79 | 392 | struct mutex irq_lock; |
75858a84 | 393 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 | 394 | /* |
9957c86d | 395 | * Update side is protected by irq_lock. |
bd2b53b2 | 396 | */ |
4b6a2872 | 397 | struct kvm_irq_routing_table __rcu *irq_routing; |
c77dcacb PB |
398 | #endif |
399 | #ifdef CONFIG_HAVE_KVM_IRQFD | |
136bdfee | 400 | struct hlist_head irq_ack_notifier_list; |
75858a84 AK |
401 | #endif |
402 | ||
36c1ed82 | 403 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
e930bffe AA |
404 | struct mmu_notifier mmu_notifier; |
405 | unsigned long mmu_notifier_seq; | |
406 | long mmu_notifier_count; | |
407 | #endif | |
a086f6a1 | 408 | long tlbs_dirty; |
07f0a7bd | 409 | struct list_head devices; |
6aa8b732 AK |
410 | }; |
411 | ||
a737f256 CD |
412 | #define kvm_err(fmt, ...) \ |
413 | pr_err("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
414 | #define kvm_info(fmt, ...) \ | |
415 | pr_info("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
416 | #define kvm_debug(fmt, ...) \ | |
417 | pr_debug("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
418 | #define kvm_pr_unimpl(fmt, ...) \ | |
419 | pr_err_ratelimited("kvm [%i]: " fmt, \ | |
420 | task_tgid_nr(current), ## __VA_ARGS__) | |
f0242478 | 421 | |
a737f256 CD |
422 | /* The guest did something we don't support. */ |
423 | #define vcpu_unimpl(vcpu, fmt, ...) \ | |
424 | kvm_pr_unimpl("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__) | |
6aa8b732 | 425 | |
988a2cae GN |
426 | static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i) |
427 | { | |
428 | smp_rmb(); | |
429 | return kvm->vcpus[i]; | |
430 | } | |
431 | ||
432 | #define kvm_for_each_vcpu(idx, vcpup, kvm) \ | |
b42fc3cb JM |
433 | for (idx = 0; \ |
434 | idx < atomic_read(&kvm->online_vcpus) && \ | |
435 | (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \ | |
436 | idx++) | |
988a2cae | 437 | |
be6ba0f0 XG |
438 | #define kvm_for_each_memslot(memslot, slots) \ |
439 | for (memslot = &slots->memslots[0]; \ | |
bf3e05bc XG |
440 | memslot < slots->memslots + KVM_MEM_SLOTS_NUM && memslot->npages;\ |
441 | memslot++) | |
be6ba0f0 | 442 | |
fb3f0f51 RR |
443 | int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id); |
444 | void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); | |
445 | ||
9fc77441 | 446 | int __must_check vcpu_load(struct kvm_vcpu *vcpu); |
313a3dc7 CO |
447 | void vcpu_put(struct kvm_vcpu *vcpu); |
448 | ||
6ef768fa PB |
449 | #ifdef __KVM_HAVE_IOAPIC |
450 | void kvm_vcpu_request_scan_ioapic(struct kvm *kvm); | |
451 | #else | |
452 | static inline void kvm_vcpu_request_scan_ioapic(struct kvm *kvm) | |
453 | { | |
454 | } | |
455 | #endif | |
456 | ||
297e2105 | 457 | #ifdef CONFIG_HAVE_KVM_IRQFD |
a0f155e9 CH |
458 | int kvm_irqfd_init(void); |
459 | void kvm_irqfd_exit(void); | |
460 | #else | |
461 | static inline int kvm_irqfd_init(void) | |
462 | { | |
463 | return 0; | |
464 | } | |
465 | ||
466 | static inline void kvm_irqfd_exit(void) | |
467 | { | |
468 | } | |
469 | #endif | |
0ee75bea | 470 | int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, |
c16f862d | 471 | struct module *module); |
cb498ea2 | 472 | void kvm_exit(void); |
6aa8b732 | 473 | |
d39f13b0 IE |
474 | void kvm_get_kvm(struct kvm *kvm); |
475 | void kvm_put_kvm(struct kvm *kvm); | |
476 | ||
90d83dc3 LJ |
477 | static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm) |
478 | { | |
479 | return rcu_dereference_check(kvm->memslots, | |
480 | srcu_read_lock_held(&kvm->srcu) | |
481 | || lockdep_is_held(&kvm->slots_lock)); | |
482 | } | |
483 | ||
28a37544 XG |
484 | static inline struct kvm_memory_slot * |
485 | id_to_memslot(struct kvm_memslots *slots, int id) | |
486 | { | |
f85e2cb5 XG |
487 | int index = slots->id_to_index[id]; |
488 | struct kvm_memory_slot *slot; | |
bf3e05bc | 489 | |
f85e2cb5 | 490 | slot = &slots->memslots[index]; |
bf3e05bc | 491 | |
f85e2cb5 XG |
492 | WARN_ON(slot->id != id); |
493 | return slot; | |
28a37544 XG |
494 | } |
495 | ||
74d0727c TY |
496 | /* |
497 | * KVM_SET_USER_MEMORY_REGION ioctl allows the following operations: | |
498 | * - create a new memory slot | |
499 | * - delete an existing memory slot | |
500 | * - modify an existing memory slot | |
501 | * -- move it in the guest physical memory space | |
502 | * -- just change its flags | |
503 | * | |
504 | * Since flags can be changed by some of these operations, the following | |
505 | * differentiation is the best we can do for __kvm_set_memory_region(): | |
506 | */ | |
507 | enum kvm_mr_change { | |
508 | KVM_MR_CREATE, | |
509 | KVM_MR_DELETE, | |
510 | KVM_MR_MOVE, | |
511 | KVM_MR_FLAGS_ONLY, | |
512 | }; | |
513 | ||
210c7c4d | 514 | int kvm_set_memory_region(struct kvm *kvm, |
47ae31e2 | 515 | struct kvm_userspace_memory_region *mem); |
f78e0e2e | 516 | int __kvm_set_memory_region(struct kvm *kvm, |
47ae31e2 | 517 | struct kvm_userspace_memory_region *mem); |
5587027c | 518 | void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free, |
db3fe4eb | 519 | struct kvm_memory_slot *dont); |
5587027c AK |
520 | int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, |
521 | unsigned long npages); | |
e59dbe09 | 522 | void kvm_arch_memslots_updated(struct kvm *kvm); |
f7784b8e MT |
523 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
524 | struct kvm_memory_slot *memslot, | |
f7784b8e | 525 | struct kvm_userspace_memory_region *mem, |
7b6195a9 | 526 | enum kvm_mr_change change); |
f7784b8e | 527 | void kvm_arch_commit_memory_region(struct kvm *kvm, |
0de10343 | 528 | struct kvm_userspace_memory_region *mem, |
8482644a TY |
529 | const struct kvm_memory_slot *old, |
530 | enum kvm_mr_change change); | |
db3fe4eb | 531 | bool kvm_largepages_enabled(void); |
54dee993 | 532 | void kvm_disable_largepages(void); |
2df72e9b MT |
533 | /* flush all memory translations */ |
534 | void kvm_arch_flush_shadow_all(struct kvm *kvm); | |
535 | /* flush memory translations pointing to 'slot' */ | |
536 | void kvm_arch_flush_shadow_memslot(struct kvm *kvm, | |
537 | struct kvm_memory_slot *slot); | |
a983fb23 | 538 | |
48987781 XG |
539 | int gfn_to_page_many_atomic(struct kvm *kvm, gfn_t gfn, struct page **pages, |
540 | int nr_pages); | |
541 | ||
954bbbc2 | 542 | struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); |
05da4558 | 543 | unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn); |
ba6a3541 | 544 | unsigned long gfn_to_hva_prot(struct kvm *kvm, gfn_t gfn, bool *writable); |
4d8b81ab | 545 | unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
64d83126 CD |
546 | unsigned long gfn_to_hva_memslot_prot(struct kvm_memory_slot *slot, gfn_t gfn, |
547 | bool *writable); | |
b4231d61 IE |
548 | void kvm_release_page_clean(struct page *page); |
549 | void kvm_release_page_dirty(struct page *page); | |
35149e21 AL |
550 | void kvm_set_page_accessed(struct page *page); |
551 | ||
365fb3fd | 552 | pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn); |
612819c3 MT |
553 | pfn_t gfn_to_pfn_async(struct kvm *kvm, gfn_t gfn, bool *async, |
554 | bool write_fault, bool *writable); | |
35149e21 | 555 | pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn); |
612819c3 MT |
556 | pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault, |
557 | bool *writable); | |
d5661048 | 558 | pfn_t gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
037d92dc XG |
559 | pfn_t gfn_to_pfn_memslot_atomic(struct kvm_memory_slot *slot, gfn_t gfn); |
560 | ||
35149e21 AL |
561 | void kvm_release_pfn_clean(pfn_t pfn); |
562 | void kvm_set_pfn_dirty(pfn_t pfn); | |
563 | void kvm_set_pfn_accessed(pfn_t pfn); | |
564 | void kvm_get_pfn(pfn_t pfn); | |
565 | ||
195aefde IE |
566 | int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, |
567 | int len); | |
7ec54588 MT |
568 | int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data, |
569 | unsigned long len); | |
195aefde | 570 | int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); |
e03b644f GN |
571 | int kvm_read_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
572 | void *data, unsigned long len); | |
195aefde IE |
573 | int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, |
574 | int offset, int len); | |
575 | int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, | |
576 | unsigned long len); | |
49c7754c GN |
577 | int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
578 | void *data, unsigned long len); | |
579 | int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc, | |
8f964525 | 580 | gpa_t gpa, unsigned long len); |
195aefde IE |
581 | int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); |
582 | int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); | |
6aa8b732 | 583 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); |
e0d62c7f | 584 | int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); |
8f0b1ab6 | 585 | unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn); |
6aa8b732 AK |
586 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); |
587 | ||
8776e519 | 588 | void kvm_vcpu_block(struct kvm_vcpu *vcpu); |
b6d33834 | 589 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
fa93384f | 590 | int kvm_vcpu_yield_to(struct kvm_vcpu *target); |
d255f4f2 | 591 | void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu); |
7702fd1f AK |
592 | void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); |
593 | void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); | |
a4ee1ca4 | 594 | |
d9e368d6 | 595 | void kvm_flush_remote_tlbs(struct kvm *kvm); |
2e53d63a | 596 | void kvm_reload_remote_mmus(struct kvm *kvm); |
d828199e | 597 | void kvm_make_mclock_inprogress_request(struct kvm *kvm); |
3d81bc7e | 598 | void kvm_make_scan_ioapic_request(struct kvm *kvm); |
445b8236 | 599 | bool kvm_make_all_cpus_request(struct kvm *kvm, unsigned int req); |
6aa8b732 | 600 | |
043405e1 CO |
601 | long kvm_arch_dev_ioctl(struct file *filp, |
602 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 CO |
603 | long kvm_arch_vcpu_ioctl(struct file *filp, |
604 | unsigned int ioctl, unsigned long arg); | |
5b1c1493 | 605 | int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf); |
018d00d2 | 606 | |
784aa3d7 | 607 | int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext); |
018d00d2 | 608 | |
5bb064dc ZX |
609 | int kvm_get_dirty_log(struct kvm *kvm, |
610 | struct kvm_dirty_log *log, int *is_dirty); | |
611 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, | |
612 | struct kvm_dirty_log *log); | |
613 | ||
aa2fbe6d YZ |
614 | int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_level, |
615 | bool line_status); | |
1fe779f8 CO |
616 | long kvm_arch_vm_ioctl(struct file *filp, |
617 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 | 618 | |
d0752060 HB |
619 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); |
620 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); | |
621 | ||
8b006791 ZX |
622 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, |
623 | struct kvm_translation *tr); | |
624 | ||
b6c7a5dc HB |
625 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); |
626 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); | |
627 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
628 | struct kvm_sregs *sregs); | |
629 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
630 | struct kvm_sregs *sregs); | |
62d9f0db MT |
631 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
632 | struct kvm_mp_state *mp_state); | |
633 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
634 | struct kvm_mp_state *mp_state); | |
d0bfb940 JK |
635 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
636 | struct kvm_guest_debug *dbg); | |
b6c7a5dc HB |
637 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); |
638 | ||
f8c16bba ZX |
639 | int kvm_arch_init(void *opaque); |
640 | void kvm_arch_exit(void); | |
043405e1 | 641 | |
e9b11c17 ZX |
642 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); |
643 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu); | |
644 | ||
e790d9ef RK |
645 | void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu); |
646 | ||
e9b11c17 ZX |
647 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu); |
648 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
649 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); | |
650 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); | |
26e5215f | 651 | int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu); |
42897d86 | 652 | int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu); |
d40ccc62 | 653 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu); |
e9b11c17 | 654 | |
13a34e06 RK |
655 | int kvm_arch_hardware_enable(void); |
656 | void kvm_arch_hardware_disable(void); | |
e9b11c17 ZX |
657 | int kvm_arch_hardware_setup(void); |
658 | void kvm_arch_hardware_unsetup(void); | |
659 | void kvm_arch_check_processor_compat(void *rtn); | |
1d737c8a | 660 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu); |
b6d33834 | 661 | int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu); |
e9b11c17 | 662 | |
c1a7b32a TY |
663 | void *kvm_kvzalloc(unsigned long size); |
664 | void kvm_kvfree(const void *addr); | |
665 | ||
d89f5eff JK |
666 | #ifndef __KVM_HAVE_ARCH_VM_ALLOC |
667 | static inline struct kvm *kvm_arch_alloc_vm(void) | |
668 | { | |
669 | return kzalloc(sizeof(struct kvm), GFP_KERNEL); | |
670 | } | |
671 | ||
672 | static inline void kvm_arch_free_vm(struct kvm *kvm) | |
673 | { | |
674 | kfree(kvm); | |
675 | } | |
676 | #endif | |
677 | ||
e0f0bbc5 AW |
678 | #ifdef __KVM_HAVE_ARCH_NONCOHERENT_DMA |
679 | void kvm_arch_register_noncoherent_dma(struct kvm *kvm); | |
680 | void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm); | |
681 | bool kvm_arch_has_noncoherent_dma(struct kvm *kvm); | |
682 | #else | |
683 | static inline void kvm_arch_register_noncoherent_dma(struct kvm *kvm) | |
684 | { | |
685 | } | |
686 | ||
687 | static inline void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm) | |
688 | { | |
689 | } | |
690 | ||
691 | static inline bool kvm_arch_has_noncoherent_dma(struct kvm *kvm) | |
692 | { | |
693 | return false; | |
694 | } | |
695 | #endif | |
696 | ||
b6d33834 CD |
697 | static inline wait_queue_head_t *kvm_arch_vcpu_wq(struct kvm_vcpu *vcpu) |
698 | { | |
2246f8b5 AG |
699 | #ifdef __KVM_HAVE_ARCH_WQP |
700 | return vcpu->arch.wqp; | |
701 | #else | |
b6d33834 | 702 | return &vcpu->wq; |
b6d33834 | 703 | #endif |
2246f8b5 | 704 | } |
b6d33834 | 705 | |
e08b9637 | 706 | int kvm_arch_init_vm(struct kvm *kvm, unsigned long type); |
d19a9cd2 | 707 | void kvm_arch_destroy_vm(struct kvm *kvm); |
ad8ba2cd | 708 | void kvm_arch_sync_events(struct kvm *kvm); |
e9b11c17 | 709 | |
3d80840d | 710 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu); |
5736199a | 711 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
682c59a3 | 712 | |
a2766325 | 713 | bool kvm_is_mmio_pfn(pfn_t pfn); |
c77fb9dc | 714 | |
62c476c7 BAY |
715 | struct kvm_irq_ack_notifier { |
716 | struct hlist_node link; | |
717 | unsigned gsi; | |
718 | void (*irq_acked)(struct kvm_irq_ack_notifier *kian); | |
719 | }; | |
720 | ||
9957c86d PM |
721 | int kvm_irq_map_gsi(struct kvm *kvm, |
722 | struct kvm_kernel_irq_routing_entry *entries, int gsi); | |
723 | int kvm_irq_map_chip_pin(struct kvm *kvm, unsigned irqchip, unsigned pin); | |
8ba918d4 | 724 | |
aa2fbe6d YZ |
725 | int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level, |
726 | bool line_status); | |
01f21880 | 727 | int kvm_set_irq_inatomic(struct kvm *kvm, int irq_source_id, u32 irq, int level); |
bd2b53b2 | 728 | int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm, |
aa2fbe6d | 729 | int irq_source_id, int level, bool line_status); |
c7c9c56c | 730 | bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin); |
44882eed | 731 | void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin); |
3de42dc0 XZ |
732 | void kvm_register_irq_ack_notifier(struct kvm *kvm, |
733 | struct kvm_irq_ack_notifier *kian); | |
fa40a821 MT |
734 | void kvm_unregister_irq_ack_notifier(struct kvm *kvm, |
735 | struct kvm_irq_ack_notifier *kian); | |
5550af4d SY |
736 | int kvm_request_irq_source_id(struct kvm *kvm); |
737 | void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id); | |
62c476c7 | 738 | |
2a5bab10 | 739 | #ifdef CONFIG_KVM_DEVICE_ASSIGNMENT |
3ad26d81 | 740 | int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
32f6daad | 741 | void kvm_iommu_unmap_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
2a5bab10 | 742 | #else |
62c476c7 | 743 | static inline int kvm_iommu_map_pages(struct kvm *kvm, |
d7a79b6c | 744 | struct kvm_memory_slot *slot) |
62c476c7 BAY |
745 | { |
746 | return 0; | |
747 | } | |
748 | ||
32f6daad AW |
749 | static inline void kvm_iommu_unmap_pages(struct kvm *kvm, |
750 | struct kvm_memory_slot *slot) | |
751 | { | |
752 | } | |
2a5bab10 | 753 | #endif |
62c476c7 | 754 | |
c11f11fc FW |
755 | static inline void kvm_guest_enter(void) |
756 | { | |
757 | unsigned long flags; | |
758 | ||
759 | BUG_ON(preemptible()); | |
760 | ||
761 | local_irq_save(flags); | |
762 | guest_enter(); | |
763 | local_irq_restore(flags); | |
764 | ||
8fa22068 GN |
765 | /* KVM does not hold any references to rcu protected data when it |
766 | * switches CPU into a guest mode. In fact switching to a guest mode | |
81e87e26 | 767 | * is very similar to exiting to userspace from rcu point of view. In |
8fa22068 GN |
768 | * addition CPU may stay in a guest mode for quite a long time (up to |
769 | * one time slice). Lets treat guest mode as quiescent state, just like | |
770 | * we do with user-mode execution. | |
771 | */ | |
772 | rcu_virt_note_context_switch(smp_processor_id()); | |
d172fcd3 LV |
773 | } |
774 | ||
775 | static inline void kvm_guest_exit(void) | |
776 | { | |
c11f11fc FW |
777 | unsigned long flags; |
778 | ||
779 | local_irq_save(flags); | |
780 | guest_exit(); | |
781 | local_irq_restore(flags); | |
d172fcd3 LV |
782 | } |
783 | ||
9d4cba7f PM |
784 | /* |
785 | * search_memslots() and __gfn_to_memslot() are here because they are | |
786 | * used in non-modular code in arch/powerpc/kvm/book3s_hv_rm_mmu.c. | |
787 | * gfn_to_memslot() itself isn't here as an inline because that would | |
788 | * bloat other code too much. | |
789 | */ | |
790 | static inline struct kvm_memory_slot * | |
791 | search_memslots(struct kvm_memslots *slots, gfn_t gfn) | |
792 | { | |
793 | struct kvm_memory_slot *memslot; | |
794 | ||
795 | kvm_for_each_memslot(memslot, slots) | |
796 | if (gfn >= memslot->base_gfn && | |
797 | gfn < memslot->base_gfn + memslot->npages) | |
798 | return memslot; | |
799 | ||
800 | return NULL; | |
801 | } | |
802 | ||
803 | static inline struct kvm_memory_slot * | |
804 | __gfn_to_memslot(struct kvm_memslots *slots, gfn_t gfn) | |
805 | { | |
806 | return search_memslots(slots, gfn); | |
807 | } | |
808 | ||
66a03505 GS |
809 | static inline unsigned long |
810 | __gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn) | |
811 | { | |
812 | return slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE; | |
813 | } | |
814 | ||
0ee8dcb8 XG |
815 | static inline int memslot_id(struct kvm *kvm, gfn_t gfn) |
816 | { | |
817 | return gfn_to_memslot(kvm, gfn)->id; | |
818 | } | |
819 | ||
d19a748b TY |
820 | static inline gfn_t |
821 | hva_to_gfn_memslot(unsigned long hva, struct kvm_memory_slot *slot) | |
887c08ac | 822 | { |
d19a748b TY |
823 | gfn_t gfn_offset = (hva - slot->userspace_addr) >> PAGE_SHIFT; |
824 | ||
825 | return slot->base_gfn + gfn_offset; | |
887c08ac XG |
826 | } |
827 | ||
1755fbcc AK |
828 | static inline gpa_t gfn_to_gpa(gfn_t gfn) |
829 | { | |
830 | return (gpa_t)gfn << PAGE_SHIFT; | |
831 | } | |
6aa8b732 | 832 | |
c30a358d JR |
833 | static inline gfn_t gpa_to_gfn(gpa_t gpa) |
834 | { | |
835 | return (gfn_t)(gpa >> PAGE_SHIFT); | |
836 | } | |
837 | ||
62c476c7 BAY |
838 | static inline hpa_t pfn_to_hpa(pfn_t pfn) |
839 | { | |
840 | return (hpa_t)pfn << PAGE_SHIFT; | |
841 | } | |
842 | ||
dfeec843 HC |
843 | static inline bool kvm_is_error_gpa(struct kvm *kvm, gpa_t gpa) |
844 | { | |
845 | unsigned long hva = gfn_to_hva(kvm, gpa_to_gfn(gpa)); | |
846 | ||
847 | return kvm_is_error_hva(hva); | |
848 | } | |
849 | ||
2f599714 | 850 | static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu) |
2f52d58c AK |
851 | { |
852 | set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests); | |
853 | } | |
854 | ||
ba1389b7 AK |
855 | enum kvm_stat_kind { |
856 | KVM_STAT_VM, | |
857 | KVM_STAT_VCPU, | |
858 | }; | |
859 | ||
417bc304 HB |
860 | struct kvm_stats_debugfs_item { |
861 | const char *name; | |
862 | int offset; | |
ba1389b7 | 863 | enum kvm_stat_kind kind; |
417bc304 HB |
864 | struct dentry *dentry; |
865 | }; | |
866 | extern struct kvm_stats_debugfs_item debugfs_entries[]; | |
76f7c879 | 867 | extern struct dentry *kvm_debugfs_dir; |
d4c9ff2d | 868 | |
36c1ed82 | 869 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
8ca40a70 | 870 | static inline int mmu_notifier_retry(struct kvm *kvm, unsigned long mmu_seq) |
e930bffe | 871 | { |
8ca40a70 | 872 | if (unlikely(kvm->mmu_notifier_count)) |
e930bffe AA |
873 | return 1; |
874 | /* | |
a355aa54 PM |
875 | * Ensure the read of mmu_notifier_count happens before the read |
876 | * of mmu_notifier_seq. This interacts with the smp_wmb() in | |
877 | * mmu_notifier_invalidate_range_end to make sure that the caller | |
878 | * either sees the old (non-zero) value of mmu_notifier_count or | |
879 | * the new (incremented) value of mmu_notifier_seq. | |
880 | * PowerPC Book3s HV KVM calls this under a per-page lock | |
881 | * rather than under kvm->mmu_lock, for scalability, so | |
882 | * can't rely on kvm->mmu_lock to keep things ordered. | |
e930bffe | 883 | */ |
a355aa54 | 884 | smp_rmb(); |
8ca40a70 | 885 | if (kvm->mmu_notifier_seq != mmu_seq) |
e930bffe AA |
886 | return 1; |
887 | return 0; | |
888 | } | |
889 | #endif | |
890 | ||
a725d56a | 891 | #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING |
399ec807 | 892 | |
f3f710bc CH |
893 | #ifdef CONFIG_S390 |
894 | #define KVM_MAX_IRQ_ROUTES 4096 //FIXME: we can have more than that... | |
895 | #else | |
399ec807 | 896 | #define KVM_MAX_IRQ_ROUTES 1024 |
f3f710bc | 897 | #endif |
399ec807 AK |
898 | |
899 | int kvm_setup_default_irq_routing(struct kvm *kvm); | |
900 | int kvm_set_irq_routing(struct kvm *kvm, | |
901 | const struct kvm_irq_routing_entry *entries, | |
902 | unsigned nr, | |
903 | unsigned flags); | |
8ba918d4 | 904 | int kvm_set_routing_entry(struct kvm_kernel_irq_routing_entry *e, |
e8cde093 | 905 | const struct kvm_irq_routing_entry *ue); |
399ec807 AK |
906 | void kvm_free_irq_routing(struct kvm *kvm); |
907 | ||
908 | #else | |
909 | ||
910 | static inline void kvm_free_irq_routing(struct kvm *kvm) {} | |
911 | ||
912 | #endif | |
913 | ||
297e2105 PM |
914 | int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi); |
915 | ||
721eecbf GH |
916 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
917 | ||
d34e6b17 | 918 | void kvm_eventfd_init(struct kvm *kvm); |
914daba8 AG |
919 | int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args); |
920 | ||
297e2105 | 921 | #ifdef CONFIG_HAVE_KVM_IRQFD |
d4db2935 | 922 | int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args); |
721eecbf | 923 | void kvm_irqfd_release(struct kvm *kvm); |
9957c86d | 924 | void kvm_irq_routing_update(struct kvm *); |
914daba8 AG |
925 | #else |
926 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) | |
927 | { | |
928 | return -EINVAL; | |
929 | } | |
930 | ||
931 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
932 | #endif | |
721eecbf GH |
933 | |
934 | #else | |
935 | ||
d34e6b17 | 936 | static inline void kvm_eventfd_init(struct kvm *kvm) {} |
bd2b53b2 | 937 | |
d4db2935 | 938 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) |
721eecbf GH |
939 | { |
940 | return -EINVAL; | |
941 | } | |
942 | ||
943 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
bd2b53b2 | 944 | |
27923eb1 | 945 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
9957c86d | 946 | static inline void kvm_irq_routing_update(struct kvm *kvm) |
bd2b53b2 | 947 | { |
bd2b53b2 | 948 | } |
27923eb1 | 949 | #endif |
bd2b53b2 | 950 | |
d34e6b17 GH |
951 | static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) |
952 | { | |
953 | return -ENOSYS; | |
954 | } | |
721eecbf GH |
955 | |
956 | #endif /* CONFIG_HAVE_KVM_EVENTFD */ | |
957 | ||
73880c80 | 958 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
c5af89b6 GN |
959 | static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu) |
960 | { | |
d3efc8ef | 961 | return vcpu->kvm->bsp_vcpu_id == vcpu->vcpu_id; |
c5af89b6 | 962 | } |
3e515705 AK |
963 | |
964 | bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu); | |
965 | ||
966 | #else | |
967 | ||
968 | static inline bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu) { return true; } | |
969 | ||
6aa8b732 | 970 | #endif |
bfd99ff5 | 971 | |
a8eeb04a AK |
972 | static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu) |
973 | { | |
974 | set_bit(req, &vcpu->requests); | |
975 | } | |
976 | ||
a8eeb04a AK |
977 | static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu) |
978 | { | |
0719837c AK |
979 | if (test_bit(req, &vcpu->requests)) { |
980 | clear_bit(req, &vcpu->requests); | |
981 | return true; | |
982 | } else { | |
983 | return false; | |
984 | } | |
a8eeb04a AK |
985 | } |
986 | ||
8b415dcd GL |
987 | extern bool kvm_rebooting; |
988 | ||
852b6d57 SW |
989 | struct kvm_device { |
990 | struct kvm_device_ops *ops; | |
991 | struct kvm *kvm; | |
852b6d57 | 992 | void *private; |
07f0a7bd | 993 | struct list_head vm_node; |
852b6d57 SW |
994 | }; |
995 | ||
996 | /* create, destroy, and name are mandatory */ | |
997 | struct kvm_device_ops { | |
998 | const char *name; | |
999 | int (*create)(struct kvm_device *dev, u32 type); | |
1000 | ||
1001 | /* | |
1002 | * Destroy is responsible for freeing dev. | |
1003 | * | |
1004 | * Destroy may be called before or after destructors are called | |
1005 | * on emulated I/O regions, depending on whether a reference is | |
1006 | * held by a vcpu or other kvm component that gets destroyed | |
1007 | * after the emulated I/O. | |
1008 | */ | |
1009 | void (*destroy)(struct kvm_device *dev); | |
1010 | ||
1011 | int (*set_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1012 | int (*get_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1013 | int (*has_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1014 | long (*ioctl)(struct kvm_device *dev, unsigned int ioctl, | |
1015 | unsigned long arg); | |
1016 | }; | |
1017 | ||
1018 | void kvm_device_get(struct kvm_device *dev); | |
1019 | void kvm_device_put(struct kvm_device *dev); | |
1020 | struct kvm_device *kvm_device_from_filp(struct file *filp); | |
d60eacb0 | 1021 | int kvm_register_device_ops(struct kvm_device_ops *ops, u32 type); |
571ee1b6 | 1022 | void kvm_unregister_device_ops(u32 type); |
852b6d57 | 1023 | |
5df554ad | 1024 | extern struct kvm_device_ops kvm_mpic_ops; |
5975a2e0 | 1025 | extern struct kvm_device_ops kvm_xics_ops; |
5df554ad | 1026 | |
4c088493 R |
1027 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
1028 | ||
1029 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
1030 | { | |
1031 | vcpu->spin_loop.in_spin_loop = val; | |
1032 | } | |
1033 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
1034 | { | |
1035 | vcpu->spin_loop.dy_eligible = val; | |
1036 | } | |
1037 | ||
1038 | #else /* !CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ | |
1039 | ||
1040 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
1041 | { | |
1042 | } | |
1043 | ||
1044 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
1045 | { | |
1046 | } | |
4c088493 | 1047 | #endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ |
bfd99ff5 | 1048 | #endif |
09a6e1f4 | 1049 |