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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; |
75858a84 | 398 | struct hlist_head mask_notifier_list; |
c77dcacb PB |
399 | #endif |
400 | #ifdef CONFIG_HAVE_KVM_IRQFD | |
136bdfee | 401 | struct hlist_head irq_ack_notifier_list; |
75858a84 AK |
402 | #endif |
403 | ||
36c1ed82 | 404 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
e930bffe AA |
405 | struct mmu_notifier mmu_notifier; |
406 | unsigned long mmu_notifier_seq; | |
407 | long mmu_notifier_count; | |
408 | #endif | |
a086f6a1 | 409 | long tlbs_dirty; |
07f0a7bd | 410 | struct list_head devices; |
6aa8b732 AK |
411 | }; |
412 | ||
a737f256 CD |
413 | #define kvm_err(fmt, ...) \ |
414 | pr_err("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
415 | #define kvm_info(fmt, ...) \ | |
416 | pr_info("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
417 | #define kvm_debug(fmt, ...) \ | |
418 | pr_debug("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
419 | #define kvm_pr_unimpl(fmt, ...) \ | |
420 | pr_err_ratelimited("kvm [%i]: " fmt, \ | |
421 | task_tgid_nr(current), ## __VA_ARGS__) | |
f0242478 | 422 | |
a737f256 CD |
423 | /* The guest did something we don't support. */ |
424 | #define vcpu_unimpl(vcpu, fmt, ...) \ | |
425 | kvm_pr_unimpl("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__) | |
6aa8b732 | 426 | |
988a2cae GN |
427 | static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i) |
428 | { | |
429 | smp_rmb(); | |
430 | return kvm->vcpus[i]; | |
431 | } | |
432 | ||
433 | #define kvm_for_each_vcpu(idx, vcpup, kvm) \ | |
b42fc3cb JM |
434 | for (idx = 0; \ |
435 | idx < atomic_read(&kvm->online_vcpus) && \ | |
436 | (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \ | |
437 | idx++) | |
988a2cae | 438 | |
be6ba0f0 XG |
439 | #define kvm_for_each_memslot(memslot, slots) \ |
440 | for (memslot = &slots->memslots[0]; \ | |
bf3e05bc XG |
441 | memslot < slots->memslots + KVM_MEM_SLOTS_NUM && memslot->npages;\ |
442 | memslot++) | |
be6ba0f0 | 443 | |
fb3f0f51 RR |
444 | int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id); |
445 | void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); | |
446 | ||
9fc77441 | 447 | int __must_check vcpu_load(struct kvm_vcpu *vcpu); |
313a3dc7 CO |
448 | void vcpu_put(struct kvm_vcpu *vcpu); |
449 | ||
297e2105 | 450 | #ifdef CONFIG_HAVE_KVM_IRQFD |
a0f155e9 CH |
451 | int kvm_irqfd_init(void); |
452 | void kvm_irqfd_exit(void); | |
453 | #else | |
454 | static inline int kvm_irqfd_init(void) | |
455 | { | |
456 | return 0; | |
457 | } | |
458 | ||
459 | static inline void kvm_irqfd_exit(void) | |
460 | { | |
461 | } | |
462 | #endif | |
0ee75bea | 463 | int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, |
c16f862d | 464 | struct module *module); |
cb498ea2 | 465 | void kvm_exit(void); |
6aa8b732 | 466 | |
d39f13b0 IE |
467 | void kvm_get_kvm(struct kvm *kvm); |
468 | void kvm_put_kvm(struct kvm *kvm); | |
469 | ||
90d83dc3 LJ |
470 | static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm) |
471 | { | |
472 | return rcu_dereference_check(kvm->memslots, | |
473 | srcu_read_lock_held(&kvm->srcu) | |
474 | || lockdep_is_held(&kvm->slots_lock)); | |
475 | } | |
476 | ||
28a37544 XG |
477 | static inline struct kvm_memory_slot * |
478 | id_to_memslot(struct kvm_memslots *slots, int id) | |
479 | { | |
f85e2cb5 XG |
480 | int index = slots->id_to_index[id]; |
481 | struct kvm_memory_slot *slot; | |
bf3e05bc | 482 | |
f85e2cb5 | 483 | slot = &slots->memslots[index]; |
bf3e05bc | 484 | |
f85e2cb5 XG |
485 | WARN_ON(slot->id != id); |
486 | return slot; | |
28a37544 XG |
487 | } |
488 | ||
74d0727c TY |
489 | /* |
490 | * KVM_SET_USER_MEMORY_REGION ioctl allows the following operations: | |
491 | * - create a new memory slot | |
492 | * - delete an existing memory slot | |
493 | * - modify an existing memory slot | |
494 | * -- move it in the guest physical memory space | |
495 | * -- just change its flags | |
496 | * | |
497 | * Since flags can be changed by some of these operations, the following | |
498 | * differentiation is the best we can do for __kvm_set_memory_region(): | |
499 | */ | |
500 | enum kvm_mr_change { | |
501 | KVM_MR_CREATE, | |
502 | KVM_MR_DELETE, | |
503 | KVM_MR_MOVE, | |
504 | KVM_MR_FLAGS_ONLY, | |
505 | }; | |
506 | ||
210c7c4d | 507 | int kvm_set_memory_region(struct kvm *kvm, |
47ae31e2 | 508 | struct kvm_userspace_memory_region *mem); |
f78e0e2e | 509 | int __kvm_set_memory_region(struct kvm *kvm, |
47ae31e2 | 510 | struct kvm_userspace_memory_region *mem); |
5587027c | 511 | void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free, |
db3fe4eb | 512 | struct kvm_memory_slot *dont); |
5587027c AK |
513 | int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, |
514 | unsigned long npages); | |
e59dbe09 | 515 | void kvm_arch_memslots_updated(struct kvm *kvm); |
f7784b8e MT |
516 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
517 | struct kvm_memory_slot *memslot, | |
f7784b8e | 518 | struct kvm_userspace_memory_region *mem, |
7b6195a9 | 519 | enum kvm_mr_change change); |
f7784b8e | 520 | void kvm_arch_commit_memory_region(struct kvm *kvm, |
0de10343 | 521 | struct kvm_userspace_memory_region *mem, |
8482644a TY |
522 | const struct kvm_memory_slot *old, |
523 | enum kvm_mr_change change); | |
db3fe4eb | 524 | bool kvm_largepages_enabled(void); |
54dee993 | 525 | void kvm_disable_largepages(void); |
2df72e9b MT |
526 | /* flush all memory translations */ |
527 | void kvm_arch_flush_shadow_all(struct kvm *kvm); | |
528 | /* flush memory translations pointing to 'slot' */ | |
529 | void kvm_arch_flush_shadow_memslot(struct kvm *kvm, | |
530 | struct kvm_memory_slot *slot); | |
a983fb23 | 531 | |
48987781 XG |
532 | int gfn_to_page_many_atomic(struct kvm *kvm, gfn_t gfn, struct page **pages, |
533 | int nr_pages); | |
534 | ||
954bbbc2 | 535 | struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); |
05da4558 | 536 | unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn); |
ba6a3541 | 537 | unsigned long gfn_to_hva_prot(struct kvm *kvm, gfn_t gfn, bool *writable); |
4d8b81ab | 538 | unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
64d83126 CD |
539 | unsigned long gfn_to_hva_memslot_prot(struct kvm_memory_slot *slot, gfn_t gfn, |
540 | bool *writable); | |
b4231d61 IE |
541 | void kvm_release_page_clean(struct page *page); |
542 | void kvm_release_page_dirty(struct page *page); | |
35149e21 AL |
543 | void kvm_set_page_accessed(struct page *page); |
544 | ||
365fb3fd | 545 | pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn); |
612819c3 MT |
546 | pfn_t gfn_to_pfn_async(struct kvm *kvm, gfn_t gfn, bool *async, |
547 | bool write_fault, bool *writable); | |
35149e21 | 548 | pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn); |
612819c3 MT |
549 | pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault, |
550 | bool *writable); | |
d5661048 | 551 | pfn_t gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
037d92dc XG |
552 | pfn_t gfn_to_pfn_memslot_atomic(struct kvm_memory_slot *slot, gfn_t gfn); |
553 | ||
35149e21 AL |
554 | void kvm_release_pfn_clean(pfn_t pfn); |
555 | void kvm_set_pfn_dirty(pfn_t pfn); | |
556 | void kvm_set_pfn_accessed(pfn_t pfn); | |
557 | void kvm_get_pfn(pfn_t pfn); | |
558 | ||
195aefde IE |
559 | int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, |
560 | int len); | |
7ec54588 MT |
561 | int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data, |
562 | unsigned long len); | |
195aefde | 563 | int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); |
e03b644f GN |
564 | int kvm_read_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
565 | void *data, unsigned long len); | |
195aefde IE |
566 | int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, |
567 | int offset, int len); | |
568 | int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, | |
569 | unsigned long len); | |
49c7754c GN |
570 | int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
571 | void *data, unsigned long len); | |
572 | int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc, | |
8f964525 | 573 | gpa_t gpa, unsigned long len); |
195aefde IE |
574 | int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); |
575 | int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); | |
6aa8b732 | 576 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); |
e0d62c7f | 577 | int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); |
8f0b1ab6 | 578 | unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn); |
6aa8b732 AK |
579 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); |
580 | ||
8776e519 | 581 | void kvm_vcpu_block(struct kvm_vcpu *vcpu); |
b6d33834 | 582 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
fa93384f | 583 | int kvm_vcpu_yield_to(struct kvm_vcpu *target); |
d255f4f2 | 584 | void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu); |
7702fd1f AK |
585 | void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); |
586 | void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); | |
a4ee1ca4 | 587 | |
d9e368d6 | 588 | void kvm_flush_remote_tlbs(struct kvm *kvm); |
2e53d63a | 589 | void kvm_reload_remote_mmus(struct kvm *kvm); |
d828199e | 590 | void kvm_make_mclock_inprogress_request(struct kvm *kvm); |
3d81bc7e | 591 | void kvm_make_scan_ioapic_request(struct kvm *kvm); |
445b8236 | 592 | bool kvm_make_all_cpus_request(struct kvm *kvm, unsigned int req); |
6aa8b732 | 593 | |
043405e1 CO |
594 | long kvm_arch_dev_ioctl(struct file *filp, |
595 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 CO |
596 | long kvm_arch_vcpu_ioctl(struct file *filp, |
597 | unsigned int ioctl, unsigned long arg); | |
5b1c1493 | 598 | int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf); |
018d00d2 | 599 | |
784aa3d7 | 600 | int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext); |
018d00d2 | 601 | |
5bb064dc ZX |
602 | int kvm_get_dirty_log(struct kvm *kvm, |
603 | struct kvm_dirty_log *log, int *is_dirty); | |
604 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, | |
605 | struct kvm_dirty_log *log); | |
606 | ||
aa2fbe6d YZ |
607 | int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_level, |
608 | bool line_status); | |
1fe779f8 CO |
609 | long kvm_arch_vm_ioctl(struct file *filp, |
610 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 | 611 | |
d0752060 HB |
612 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); |
613 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); | |
614 | ||
8b006791 ZX |
615 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, |
616 | struct kvm_translation *tr); | |
617 | ||
b6c7a5dc HB |
618 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); |
619 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); | |
620 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
621 | struct kvm_sregs *sregs); | |
622 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
623 | struct kvm_sregs *sregs); | |
62d9f0db MT |
624 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
625 | struct kvm_mp_state *mp_state); | |
626 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
627 | struct kvm_mp_state *mp_state); | |
d0bfb940 JK |
628 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
629 | struct kvm_guest_debug *dbg); | |
b6c7a5dc HB |
630 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); |
631 | ||
f8c16bba ZX |
632 | int kvm_arch_init(void *opaque); |
633 | void kvm_arch_exit(void); | |
043405e1 | 634 | |
e9b11c17 ZX |
635 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); |
636 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu); | |
637 | ||
e790d9ef RK |
638 | void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu); |
639 | ||
e9b11c17 ZX |
640 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu); |
641 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
642 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); | |
643 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); | |
26e5215f | 644 | int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu); |
42897d86 | 645 | int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu); |
d40ccc62 | 646 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu); |
e9b11c17 | 647 | |
13a34e06 RK |
648 | int kvm_arch_hardware_enable(void); |
649 | void kvm_arch_hardware_disable(void); | |
e9b11c17 ZX |
650 | int kvm_arch_hardware_setup(void); |
651 | void kvm_arch_hardware_unsetup(void); | |
652 | void kvm_arch_check_processor_compat(void *rtn); | |
1d737c8a | 653 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu); |
b6d33834 | 654 | int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu); |
e9b11c17 | 655 | |
c1a7b32a TY |
656 | void *kvm_kvzalloc(unsigned long size); |
657 | void kvm_kvfree(const void *addr); | |
658 | ||
d89f5eff JK |
659 | #ifndef __KVM_HAVE_ARCH_VM_ALLOC |
660 | static inline struct kvm *kvm_arch_alloc_vm(void) | |
661 | { | |
662 | return kzalloc(sizeof(struct kvm), GFP_KERNEL); | |
663 | } | |
664 | ||
665 | static inline void kvm_arch_free_vm(struct kvm *kvm) | |
666 | { | |
667 | kfree(kvm); | |
668 | } | |
669 | #endif | |
670 | ||
e0f0bbc5 AW |
671 | #ifdef __KVM_HAVE_ARCH_NONCOHERENT_DMA |
672 | void kvm_arch_register_noncoherent_dma(struct kvm *kvm); | |
673 | void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm); | |
674 | bool kvm_arch_has_noncoherent_dma(struct kvm *kvm); | |
675 | #else | |
676 | static inline void kvm_arch_register_noncoherent_dma(struct kvm *kvm) | |
677 | { | |
678 | } | |
679 | ||
680 | static inline void kvm_arch_unregister_noncoherent_dma(struct kvm *kvm) | |
681 | { | |
682 | } | |
683 | ||
684 | static inline bool kvm_arch_has_noncoherent_dma(struct kvm *kvm) | |
685 | { | |
686 | return false; | |
687 | } | |
688 | #endif | |
689 | ||
b6d33834 CD |
690 | static inline wait_queue_head_t *kvm_arch_vcpu_wq(struct kvm_vcpu *vcpu) |
691 | { | |
2246f8b5 AG |
692 | #ifdef __KVM_HAVE_ARCH_WQP |
693 | return vcpu->arch.wqp; | |
694 | #else | |
b6d33834 | 695 | return &vcpu->wq; |
b6d33834 | 696 | #endif |
2246f8b5 | 697 | } |
b6d33834 | 698 | |
e08b9637 | 699 | int kvm_arch_init_vm(struct kvm *kvm, unsigned long type); |
d19a9cd2 | 700 | void kvm_arch_destroy_vm(struct kvm *kvm); |
ad8ba2cd | 701 | void kvm_arch_sync_events(struct kvm *kvm); |
e9b11c17 | 702 | |
3d80840d | 703 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu); |
5736199a | 704 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
682c59a3 | 705 | |
d3fccc7e | 706 | bool kvm_is_reserved_pfn(pfn_t pfn); |
c77fb9dc | 707 | |
62c476c7 BAY |
708 | struct kvm_irq_ack_notifier { |
709 | struct hlist_node link; | |
710 | unsigned gsi; | |
711 | void (*irq_acked)(struct kvm_irq_ack_notifier *kian); | |
712 | }; | |
713 | ||
714 | struct kvm_assigned_dev_kernel { | |
715 | struct kvm_irq_ack_notifier ack_notifier; | |
62c476c7 BAY |
716 | struct list_head list; |
717 | int assigned_dev_id; | |
ab9f4ecb | 718 | int host_segnr; |
62c476c7 BAY |
719 | int host_busnr; |
720 | int host_devfn; | |
c1e01514 | 721 | unsigned int entries_nr; |
62c476c7 | 722 | int host_irq; |
defaf158 | 723 | bool host_irq_disabled; |
07700a94 | 724 | bool pci_2_3; |
c1e01514 | 725 | struct msix_entry *host_msix_entries; |
62c476c7 | 726 | int guest_irq; |
0645211c | 727 | struct msix_entry *guest_msix_entries; |
4f906c19 | 728 | unsigned long irq_requested_type; |
5550af4d | 729 | int irq_source_id; |
b653574a | 730 | int flags; |
62c476c7 BAY |
731 | struct pci_dev *dev; |
732 | struct kvm *kvm; | |
0645211c | 733 | spinlock_t intx_lock; |
cf9eeac4 | 734 | spinlock_t intx_mask_lock; |
1e001d49 | 735 | char irq_name[32]; |
f8fcfd77 | 736 | struct pci_saved_state *pci_saved_state; |
62c476c7 | 737 | }; |
75858a84 AK |
738 | |
739 | struct kvm_irq_mask_notifier { | |
740 | void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked); | |
741 | int irq; | |
742 | struct hlist_node link; | |
743 | }; | |
744 | ||
745 | void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq, | |
746 | struct kvm_irq_mask_notifier *kimn); | |
747 | void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq, | |
748 | struct kvm_irq_mask_notifier *kimn); | |
4a994358 GN |
749 | void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin, |
750 | bool mask); | |
75858a84 | 751 | |
9957c86d PM |
752 | int kvm_irq_map_gsi(struct kvm *kvm, |
753 | struct kvm_kernel_irq_routing_entry *entries, int gsi); | |
754 | int kvm_irq_map_chip_pin(struct kvm *kvm, unsigned irqchip, unsigned pin); | |
8ba918d4 | 755 | |
aa2fbe6d YZ |
756 | int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level, |
757 | bool line_status); | |
01f21880 | 758 | int kvm_set_irq_inatomic(struct kvm *kvm, int irq_source_id, u32 irq, int level); |
bd2b53b2 | 759 | int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm, |
aa2fbe6d | 760 | int irq_source_id, int level, bool line_status); |
c7c9c56c | 761 | bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin); |
44882eed | 762 | void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin); |
3de42dc0 XZ |
763 | void kvm_register_irq_ack_notifier(struct kvm *kvm, |
764 | struct kvm_irq_ack_notifier *kian); | |
fa40a821 MT |
765 | void kvm_unregister_irq_ack_notifier(struct kvm *kvm, |
766 | struct kvm_irq_ack_notifier *kian); | |
5550af4d SY |
767 | int kvm_request_irq_source_id(struct kvm *kvm); |
768 | void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id); | |
62c476c7 | 769 | |
2a5bab10 | 770 | #ifdef CONFIG_KVM_DEVICE_ASSIGNMENT |
3ad26d81 | 771 | int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
32f6daad | 772 | void kvm_iommu_unmap_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
260782bc | 773 | int kvm_iommu_map_guest(struct kvm *kvm); |
62c476c7 | 774 | int kvm_iommu_unmap_guest(struct kvm *kvm); |
260782bc WH |
775 | int kvm_assign_device(struct kvm *kvm, |
776 | struct kvm_assigned_dev_kernel *assigned_dev); | |
0a920356 WH |
777 | int kvm_deassign_device(struct kvm *kvm, |
778 | struct kvm_assigned_dev_kernel *assigned_dev); | |
2a5bab10 | 779 | #else |
62c476c7 | 780 | static inline int kvm_iommu_map_pages(struct kvm *kvm, |
d7a79b6c | 781 | struct kvm_memory_slot *slot) |
62c476c7 BAY |
782 | { |
783 | return 0; | |
784 | } | |
785 | ||
32f6daad AW |
786 | static inline void kvm_iommu_unmap_pages(struct kvm *kvm, |
787 | struct kvm_memory_slot *slot) | |
788 | { | |
789 | } | |
790 | ||
62c476c7 BAY |
791 | static inline int kvm_iommu_unmap_guest(struct kvm *kvm) |
792 | { | |
793 | return 0; | |
794 | } | |
2a5bab10 | 795 | #endif |
62c476c7 | 796 | |
c11f11fc FW |
797 | static inline void kvm_guest_enter(void) |
798 | { | |
799 | unsigned long flags; | |
800 | ||
801 | BUG_ON(preemptible()); | |
802 | ||
803 | local_irq_save(flags); | |
804 | guest_enter(); | |
805 | local_irq_restore(flags); | |
806 | ||
8fa22068 GN |
807 | /* KVM does not hold any references to rcu protected data when it |
808 | * switches CPU into a guest mode. In fact switching to a guest mode | |
81e87e26 | 809 | * is very similar to exiting to userspace from rcu point of view. In |
8fa22068 GN |
810 | * addition CPU may stay in a guest mode for quite a long time (up to |
811 | * one time slice). Lets treat guest mode as quiescent state, just like | |
812 | * we do with user-mode execution. | |
813 | */ | |
814 | rcu_virt_note_context_switch(smp_processor_id()); | |
d172fcd3 LV |
815 | } |
816 | ||
817 | static inline void kvm_guest_exit(void) | |
818 | { | |
c11f11fc FW |
819 | unsigned long flags; |
820 | ||
821 | local_irq_save(flags); | |
822 | guest_exit(); | |
823 | local_irq_restore(flags); | |
d172fcd3 LV |
824 | } |
825 | ||
9d4cba7f PM |
826 | /* |
827 | * search_memslots() and __gfn_to_memslot() are here because they are | |
828 | * used in non-modular code in arch/powerpc/kvm/book3s_hv_rm_mmu.c. | |
829 | * gfn_to_memslot() itself isn't here as an inline because that would | |
830 | * bloat other code too much. | |
831 | */ | |
832 | static inline struct kvm_memory_slot * | |
833 | search_memslots(struct kvm_memslots *slots, gfn_t gfn) | |
834 | { | |
835 | struct kvm_memory_slot *memslot; | |
836 | ||
837 | kvm_for_each_memslot(memslot, slots) | |
838 | if (gfn >= memslot->base_gfn && | |
839 | gfn < memslot->base_gfn + memslot->npages) | |
840 | return memslot; | |
841 | ||
842 | return NULL; | |
843 | } | |
844 | ||
845 | static inline struct kvm_memory_slot * | |
846 | __gfn_to_memslot(struct kvm_memslots *slots, gfn_t gfn) | |
847 | { | |
848 | return search_memslots(slots, gfn); | |
849 | } | |
850 | ||
66a03505 GS |
851 | static inline unsigned long |
852 | __gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn) | |
853 | { | |
854 | return slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE; | |
855 | } | |
856 | ||
0ee8dcb8 XG |
857 | static inline int memslot_id(struct kvm *kvm, gfn_t gfn) |
858 | { | |
859 | return gfn_to_memslot(kvm, gfn)->id; | |
860 | } | |
861 | ||
d19a748b TY |
862 | static inline gfn_t |
863 | hva_to_gfn_memslot(unsigned long hva, struct kvm_memory_slot *slot) | |
887c08ac | 864 | { |
d19a748b TY |
865 | gfn_t gfn_offset = (hva - slot->userspace_addr) >> PAGE_SHIFT; |
866 | ||
867 | return slot->base_gfn + gfn_offset; | |
887c08ac XG |
868 | } |
869 | ||
1755fbcc AK |
870 | static inline gpa_t gfn_to_gpa(gfn_t gfn) |
871 | { | |
872 | return (gpa_t)gfn << PAGE_SHIFT; | |
873 | } | |
6aa8b732 | 874 | |
c30a358d JR |
875 | static inline gfn_t gpa_to_gfn(gpa_t gpa) |
876 | { | |
877 | return (gfn_t)(gpa >> PAGE_SHIFT); | |
878 | } | |
879 | ||
62c476c7 BAY |
880 | static inline hpa_t pfn_to_hpa(pfn_t pfn) |
881 | { | |
882 | return (hpa_t)pfn << PAGE_SHIFT; | |
883 | } | |
884 | ||
dfeec843 HC |
885 | static inline bool kvm_is_error_gpa(struct kvm *kvm, gpa_t gpa) |
886 | { | |
887 | unsigned long hva = gfn_to_hva(kvm, gpa_to_gfn(gpa)); | |
888 | ||
889 | return kvm_is_error_hva(hva); | |
890 | } | |
891 | ||
2f599714 | 892 | static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu) |
2f52d58c AK |
893 | { |
894 | set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests); | |
895 | } | |
896 | ||
ba1389b7 AK |
897 | enum kvm_stat_kind { |
898 | KVM_STAT_VM, | |
899 | KVM_STAT_VCPU, | |
900 | }; | |
901 | ||
417bc304 HB |
902 | struct kvm_stats_debugfs_item { |
903 | const char *name; | |
904 | int offset; | |
ba1389b7 | 905 | enum kvm_stat_kind kind; |
417bc304 HB |
906 | struct dentry *dentry; |
907 | }; | |
908 | extern struct kvm_stats_debugfs_item debugfs_entries[]; | |
76f7c879 | 909 | extern struct dentry *kvm_debugfs_dir; |
d4c9ff2d | 910 | |
36c1ed82 | 911 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
8ca40a70 | 912 | static inline int mmu_notifier_retry(struct kvm *kvm, unsigned long mmu_seq) |
e930bffe | 913 | { |
8ca40a70 | 914 | if (unlikely(kvm->mmu_notifier_count)) |
e930bffe AA |
915 | return 1; |
916 | /* | |
a355aa54 PM |
917 | * Ensure the read of mmu_notifier_count happens before the read |
918 | * of mmu_notifier_seq. This interacts with the smp_wmb() in | |
919 | * mmu_notifier_invalidate_range_end to make sure that the caller | |
920 | * either sees the old (non-zero) value of mmu_notifier_count or | |
921 | * the new (incremented) value of mmu_notifier_seq. | |
922 | * PowerPC Book3s HV KVM calls this under a per-page lock | |
923 | * rather than under kvm->mmu_lock, for scalability, so | |
924 | * can't rely on kvm->mmu_lock to keep things ordered. | |
e930bffe | 925 | */ |
a355aa54 | 926 | smp_rmb(); |
8ca40a70 | 927 | if (kvm->mmu_notifier_seq != mmu_seq) |
e930bffe AA |
928 | return 1; |
929 | return 0; | |
930 | } | |
931 | #endif | |
932 | ||
a725d56a | 933 | #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING |
399ec807 | 934 | |
f3f710bc CH |
935 | #ifdef CONFIG_S390 |
936 | #define KVM_MAX_IRQ_ROUTES 4096 //FIXME: we can have more than that... | |
937 | #else | |
399ec807 | 938 | #define KVM_MAX_IRQ_ROUTES 1024 |
f3f710bc | 939 | #endif |
399ec807 AK |
940 | |
941 | int kvm_setup_default_irq_routing(struct kvm *kvm); | |
942 | int kvm_set_irq_routing(struct kvm *kvm, | |
943 | const struct kvm_irq_routing_entry *entries, | |
944 | unsigned nr, | |
945 | unsigned flags); | |
8ba918d4 | 946 | int kvm_set_routing_entry(struct kvm_kernel_irq_routing_entry *e, |
e8cde093 | 947 | const struct kvm_irq_routing_entry *ue); |
399ec807 AK |
948 | void kvm_free_irq_routing(struct kvm *kvm); |
949 | ||
950 | #else | |
951 | ||
952 | static inline void kvm_free_irq_routing(struct kvm *kvm) {} | |
953 | ||
954 | #endif | |
955 | ||
297e2105 PM |
956 | int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi); |
957 | ||
721eecbf GH |
958 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
959 | ||
d34e6b17 | 960 | void kvm_eventfd_init(struct kvm *kvm); |
914daba8 AG |
961 | int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args); |
962 | ||
297e2105 | 963 | #ifdef CONFIG_HAVE_KVM_IRQFD |
d4db2935 | 964 | int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args); |
721eecbf | 965 | void kvm_irqfd_release(struct kvm *kvm); |
9957c86d | 966 | void kvm_irq_routing_update(struct kvm *); |
914daba8 AG |
967 | #else |
968 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) | |
969 | { | |
970 | return -EINVAL; | |
971 | } | |
972 | ||
973 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
974 | #endif | |
721eecbf GH |
975 | |
976 | #else | |
977 | ||
d34e6b17 | 978 | static inline void kvm_eventfd_init(struct kvm *kvm) {} |
bd2b53b2 | 979 | |
d4db2935 | 980 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) |
721eecbf GH |
981 | { |
982 | return -EINVAL; | |
983 | } | |
984 | ||
985 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
bd2b53b2 | 986 | |
27923eb1 | 987 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
9957c86d | 988 | static inline void kvm_irq_routing_update(struct kvm *kvm) |
bd2b53b2 | 989 | { |
bd2b53b2 | 990 | } |
27923eb1 | 991 | #endif |
bd2b53b2 | 992 | |
d34e6b17 GH |
993 | static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) |
994 | { | |
995 | return -ENOSYS; | |
996 | } | |
721eecbf GH |
997 | |
998 | #endif /* CONFIG_HAVE_KVM_EVENTFD */ | |
999 | ||
73880c80 | 1000 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
c5af89b6 GN |
1001 | static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu) |
1002 | { | |
d3efc8ef | 1003 | return vcpu->kvm->bsp_vcpu_id == vcpu->vcpu_id; |
c5af89b6 | 1004 | } |
3e515705 AK |
1005 | |
1006 | bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu); | |
1007 | ||
1008 | #else | |
1009 | ||
1010 | static inline bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu) { return true; } | |
1011 | ||
6aa8b732 | 1012 | #endif |
bfd99ff5 | 1013 | |
2a5bab10 | 1014 | #ifdef CONFIG_KVM_DEVICE_ASSIGNMENT |
bfd99ff5 AK |
1015 | |
1016 | long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, | |
1017 | unsigned long arg); | |
1018 | ||
2a5bab10 AW |
1019 | void kvm_free_all_assigned_devices(struct kvm *kvm); |
1020 | ||
bfd99ff5 AK |
1021 | #else |
1022 | ||
1023 | static inline long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, | |
1024 | unsigned long arg) | |
1025 | { | |
1026 | return -ENOTTY; | |
1027 | } | |
1028 | ||
2a5bab10 AW |
1029 | static inline void kvm_free_all_assigned_devices(struct kvm *kvm) {} |
1030 | ||
73880c80 | 1031 | #endif |
bfd99ff5 | 1032 | |
a8eeb04a AK |
1033 | static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu) |
1034 | { | |
1035 | set_bit(req, &vcpu->requests); | |
1036 | } | |
1037 | ||
a8eeb04a AK |
1038 | static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu) |
1039 | { | |
0719837c AK |
1040 | if (test_bit(req, &vcpu->requests)) { |
1041 | clear_bit(req, &vcpu->requests); | |
1042 | return true; | |
1043 | } else { | |
1044 | return false; | |
1045 | } | |
a8eeb04a AK |
1046 | } |
1047 | ||
8b415dcd GL |
1048 | extern bool kvm_rebooting; |
1049 | ||
852b6d57 SW |
1050 | struct kvm_device { |
1051 | struct kvm_device_ops *ops; | |
1052 | struct kvm *kvm; | |
852b6d57 | 1053 | void *private; |
07f0a7bd | 1054 | struct list_head vm_node; |
852b6d57 SW |
1055 | }; |
1056 | ||
1057 | /* create, destroy, and name are mandatory */ | |
1058 | struct kvm_device_ops { | |
1059 | const char *name; | |
1060 | int (*create)(struct kvm_device *dev, u32 type); | |
1061 | ||
1062 | /* | |
1063 | * Destroy is responsible for freeing dev. | |
1064 | * | |
1065 | * Destroy may be called before or after destructors are called | |
1066 | * on emulated I/O regions, depending on whether a reference is | |
1067 | * held by a vcpu or other kvm component that gets destroyed | |
1068 | * after the emulated I/O. | |
1069 | */ | |
1070 | void (*destroy)(struct kvm_device *dev); | |
1071 | ||
1072 | int (*set_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1073 | int (*get_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1074 | int (*has_attr)(struct kvm_device *dev, struct kvm_device_attr *attr); | |
1075 | long (*ioctl)(struct kvm_device *dev, unsigned int ioctl, | |
1076 | unsigned long arg); | |
1077 | }; | |
1078 | ||
1079 | void kvm_device_get(struct kvm_device *dev); | |
1080 | void kvm_device_put(struct kvm_device *dev); | |
1081 | struct kvm_device *kvm_device_from_filp(struct file *filp); | |
d60eacb0 | 1082 | int kvm_register_device_ops(struct kvm_device_ops *ops, u32 type); |
571ee1b6 | 1083 | void kvm_unregister_device_ops(u32 type); |
852b6d57 | 1084 | |
5df554ad | 1085 | extern struct kvm_device_ops kvm_mpic_ops; |
5975a2e0 | 1086 | extern struct kvm_device_ops kvm_xics_ops; |
5df554ad | 1087 | |
4c088493 R |
1088 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
1089 | ||
1090 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
1091 | { | |
1092 | vcpu->spin_loop.in_spin_loop = val; | |
1093 | } | |
1094 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
1095 | { | |
1096 | vcpu->spin_loop.dy_eligible = val; | |
1097 | } | |
1098 | ||
1099 | #else /* !CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ | |
1100 | ||
1101 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
1102 | { | |
1103 | } | |
1104 | ||
1105 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
1106 | { | |
1107 | } | |
4c088493 | 1108 | #endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ |
bfd99ff5 | 1109 | #endif |
09a6e1f4 | 1110 |