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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> | |
6aa8b732 | 16 | #include <linux/mm.h> |
15ad7146 | 17 | #include <linux/preempt.h> |
0937c48d | 18 | #include <linux/msi.h> |
e8edc6e0 | 19 | #include <asm/signal.h> |
6aa8b732 | 20 | |
6aa8b732 | 21 | #include <linux/kvm.h> |
102d8325 | 22 | #include <linux/kvm_para.h> |
6aa8b732 | 23 | |
edf88417 | 24 | #include <linux/kvm_types.h> |
d77a39d9 | 25 | |
edf88417 | 26 | #include <asm/kvm_host.h> |
d657a98e | 27 | |
d9e368d6 AK |
28 | /* |
29 | * vcpu->requests bit members | |
30 | */ | |
3176bc3e | 31 | #define KVM_REQ_TLB_FLUSH 0 |
2f52d58c | 32 | #define KVM_REQ_MIGRATE_TIMER 1 |
b209749f | 33 | #define KVM_REQ_REPORT_TPR_ACCESS 2 |
2e53d63a | 34 | #define KVM_REQ_MMU_RELOAD 3 |
71c4dfaf | 35 | #define KVM_REQ_TRIPLE_FAULT 4 |
06e05645 | 36 | #define KVM_REQ_PENDING_TIMER 5 |
d7690175 | 37 | #define KVM_REQ_UNHALT 6 |
4731d4c7 | 38 | #define KVM_REQ_MMU_SYNC 7 |
c8076604 | 39 | #define KVM_REQ_KVMCLOCK_UPDATE 8 |
32f88400 | 40 | #define KVM_REQ_KICK 9 |
02daab21 | 41 | #define KVM_REQ_DEACTIVATE_FPU 10 |
6aa8b732 | 42 | |
5550af4d SY |
43 | #define KVM_USERSPACE_IRQ_SOURCE_ID 0 |
44 | ||
6c474694 | 45 | struct kvm; |
6aa8b732 | 46 | struct kvm_vcpu; |
c16f862d | 47 | extern struct kmem_cache *kvm_vcpu_cache; |
6aa8b732 | 48 | |
2eeb2e94 GH |
49 | /* |
50 | * It would be nice to use something smarter than a linear search, TBD... | |
51 | * Thankfully we dont expect many devices to register (famous last words :), | |
52 | * so until then it will suffice. At least its abstracted so we can change | |
53 | * in one place. | |
54 | */ | |
55 | struct kvm_io_bus { | |
56 | int dev_count; | |
e80e2a60 | 57 | #define NR_IOBUS_DEVS 200 |
2eeb2e94 GH |
58 | struct kvm_io_device *devs[NR_IOBUS_DEVS]; |
59 | }; | |
60 | ||
e93f8a0f MT |
61 | enum kvm_bus { |
62 | KVM_MMIO_BUS, | |
63 | KVM_PIO_BUS, | |
64 | KVM_NR_BUSES | |
65 | }; | |
66 | ||
67 | int kvm_io_bus_write(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, | |
68 | int len, const void *val); | |
69 | int kvm_io_bus_read(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, int len, | |
bda9020e | 70 | void *val); |
e93f8a0f | 71 | int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, |
090b7aff | 72 | struct kvm_io_device *dev); |
e93f8a0f MT |
73 | int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx, |
74 | struct kvm_io_device *dev); | |
2eeb2e94 | 75 | |
d17fbbf7 ZX |
76 | struct kvm_vcpu { |
77 | struct kvm *kvm; | |
31bb117e | 78 | #ifdef CONFIG_PREEMPT_NOTIFIERS |
d17fbbf7 | 79 | struct preempt_notifier preempt_notifier; |
31bb117e | 80 | #endif |
d17fbbf7 ZX |
81 | int vcpu_id; |
82 | struct mutex mutex; | |
83 | int cpu; | |
d94e1dc9 | 84 | atomic_t guest_mode; |
d17fbbf7 | 85 | struct kvm_run *run; |
d17fbbf7 | 86 | unsigned long requests; |
d0bfb940 | 87 | unsigned long guest_debug; |
f656ce01 MT |
88 | int srcu_idx; |
89 | ||
d17fbbf7 | 90 | int fpu_active; |
2acf923e | 91 | int guest_fpu_loaded, guest_xcr0_loaded; |
d17fbbf7 ZX |
92 | wait_queue_head_t wq; |
93 | int sigset_active; | |
94 | sigset_t sigset; | |
95 | struct kvm_vcpu_stat stat; | |
96 | ||
34c16eec | 97 | #ifdef CONFIG_HAS_IOMEM |
d17fbbf7 ZX |
98 | int mmio_needed; |
99 | int mmio_read_completed; | |
100 | int mmio_is_write; | |
101 | int mmio_size; | |
102 | unsigned char mmio_data[8]; | |
6aa8b732 | 103 | gpa_t mmio_phys_addr; |
34c16eec | 104 | #endif |
1165f5fe | 105 | |
d657a98e ZX |
106 | struct kvm_vcpu_arch arch; |
107 | }; | |
108 | ||
660c22c4 TY |
109 | /* |
110 | * Some of the bitops functions do not support too long bitmaps. | |
111 | * This number must be determined not to exceed such limits. | |
112 | */ | |
113 | #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1) | |
114 | ||
6aa8b732 AK |
115 | struct kvm_memory_slot { |
116 | gfn_t base_gfn; | |
117 | unsigned long npages; | |
118 | unsigned long flags; | |
290fc38d | 119 | unsigned long *rmap; |
6aa8b732 | 120 | unsigned long *dirty_bitmap; |
05da4558 MT |
121 | struct { |
122 | unsigned long rmap_pde; | |
123 | int write_count; | |
ec04b260 | 124 | } *lpage_info[KVM_NR_PAGE_SIZES - 1]; |
8a7ae055 | 125 | unsigned long userspace_addr; |
80b14b5b | 126 | int user_alloc; |
e36d96f7 | 127 | int id; |
6aa8b732 AK |
128 | }; |
129 | ||
87bf6e7d TY |
130 | static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot) |
131 | { | |
132 | return ALIGN(memslot->npages, BITS_PER_LONG) / 8; | |
133 | } | |
134 | ||
399ec807 AK |
135 | struct kvm_kernel_irq_routing_entry { |
136 | u32 gsi; | |
5116d8f6 | 137 | u32 type; |
4925663a | 138 | int (*set)(struct kvm_kernel_irq_routing_entry *e, |
1a6e4a8c | 139 | struct kvm *kvm, int irq_source_id, int level); |
399ec807 AK |
140 | union { |
141 | struct { | |
142 | unsigned irqchip; | |
143 | unsigned pin; | |
144 | } irqchip; | |
79950e10 | 145 | struct msi_msg msi; |
399ec807 | 146 | }; |
46e624b9 GN |
147 | struct hlist_node link; |
148 | }; | |
149 | ||
3e71f88b GN |
150 | #ifdef __KVM_HAVE_IOAPIC |
151 | ||
46e624b9 | 152 | struct kvm_irq_routing_table { |
3e71f88b | 153 | int chip[KVM_NR_IRQCHIPS][KVM_IOAPIC_NUM_PINS]; |
46e624b9 GN |
154 | struct kvm_kernel_irq_routing_entry *rt_entries; |
155 | u32 nr_rt_entries; | |
156 | /* | |
157 | * Array indexed by gsi. Each entry contains list of irq chips | |
158 | * the gsi is connected to. | |
159 | */ | |
160 | struct hlist_head map[0]; | |
399ec807 AK |
161 | }; |
162 | ||
3e71f88b GN |
163 | #else |
164 | ||
165 | struct kvm_irq_routing_table {}; | |
166 | ||
167 | #endif | |
168 | ||
46a26bf5 MT |
169 | struct kvm_memslots { |
170 | int nmemslots; | |
171 | struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS + | |
172 | KVM_PRIVATE_MEM_SLOTS]; | |
173 | }; | |
174 | ||
6aa8b732 | 175 | struct kvm { |
aaee2c94 | 176 | spinlock_t mmu_lock; |
70e335e1 | 177 | raw_spinlock_t requests_lock; |
79fac95e | 178 | struct mutex slots_lock; |
6d4e4c4f | 179 | struct mm_struct *mm; /* userspace tied to this vm */ |
46a26bf5 | 180 | struct kvm_memslots *memslots; |
bc6678a3 | 181 | struct srcu_struct srcu; |
73880c80 GN |
182 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
183 | u32 bsp_vcpu_id; | |
c5af89b6 | 184 | struct kvm_vcpu *bsp_vcpu; |
73880c80 | 185 | #endif |
fb3f0f51 | 186 | struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; |
73880c80 | 187 | atomic_t online_vcpus; |
133de902 | 188 | struct list_head vm_list; |
60eead79 | 189 | struct mutex lock; |
e93f8a0f | 190 | struct kvm_io_bus *buses[KVM_NR_BUSES]; |
721eecbf GH |
191 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
192 | struct { | |
193 | spinlock_t lock; | |
194 | struct list_head items; | |
195 | } irqfds; | |
d34e6b17 | 196 | struct list_head ioeventfds; |
721eecbf | 197 | #endif |
ba1389b7 | 198 | struct kvm_vm_stat stat; |
d69fb81f | 199 | struct kvm_arch arch; |
d39f13b0 | 200 | atomic_t users_count; |
5f94c174 LV |
201 | #ifdef KVM_COALESCED_MMIO_PAGE_OFFSET |
202 | struct kvm_coalesced_mmio_dev *coalesced_mmio_dev; | |
203 | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; | |
204 | #endif | |
e930bffe | 205 | |
60eead79 | 206 | struct mutex irq_lock; |
75858a84 | 207 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
46e624b9 | 208 | struct kvm_irq_routing_table *irq_routing; |
75858a84 | 209 | struct hlist_head mask_notifier_list; |
136bdfee | 210 | struct hlist_head irq_ack_notifier_list; |
75858a84 AK |
211 | #endif |
212 | ||
e930bffe AA |
213 | #ifdef KVM_ARCH_WANT_MMU_NOTIFIER |
214 | struct mmu_notifier mmu_notifier; | |
215 | unsigned long mmu_notifier_seq; | |
216 | long mmu_notifier_count; | |
217 | #endif | |
6aa8b732 AK |
218 | }; |
219 | ||
f0242478 RR |
220 | /* The guest did something we don't support. */ |
221 | #define pr_unimpl(vcpu, fmt, ...) \ | |
222 | do { \ | |
223 | if (printk_ratelimit()) \ | |
224 | printk(KERN_ERR "kvm: %i: cpu%i " fmt, \ | |
225 | current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \ | |
d77c26fc | 226 | } while (0) |
f0242478 | 227 | |
6aa8b732 AK |
228 | #define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt) |
229 | #define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt) | |
230 | ||
988a2cae GN |
231 | static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i) |
232 | { | |
233 | smp_rmb(); | |
234 | return kvm->vcpus[i]; | |
235 | } | |
236 | ||
237 | #define kvm_for_each_vcpu(idx, vcpup, kvm) \ | |
238 | for (idx = 0, vcpup = kvm_get_vcpu(kvm, idx); \ | |
239 | idx < atomic_read(&kvm->online_vcpus) && vcpup; \ | |
240 | vcpup = kvm_get_vcpu(kvm, ++idx)) | |
241 | ||
fb3f0f51 RR |
242 | int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id); |
243 | void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); | |
244 | ||
313a3dc7 CO |
245 | void vcpu_load(struct kvm_vcpu *vcpu); |
246 | void vcpu_put(struct kvm_vcpu *vcpu); | |
247 | ||
0ee75bea | 248 | int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, |
c16f862d | 249 | struct module *module); |
cb498ea2 | 250 | void kvm_exit(void); |
6aa8b732 | 251 | |
d39f13b0 IE |
252 | void kvm_get_kvm(struct kvm *kvm); |
253 | void kvm_put_kvm(struct kvm *kvm); | |
254 | ||
90d83dc3 LJ |
255 | static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm) |
256 | { | |
257 | return rcu_dereference_check(kvm->memslots, | |
258 | srcu_read_lock_held(&kvm->srcu) | |
259 | || lockdep_is_held(&kvm->slots_lock)); | |
260 | } | |
261 | ||
6aa8b732 AK |
262 | #define HPA_MSB ((sizeof(hpa_t) * 8) - 1) |
263 | #define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB) | |
264 | static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; } | |
6aa8b732 | 265 | |
cea7bb21 | 266 | extern struct page *bad_page; |
35149e21 | 267 | extern pfn_t bad_pfn; |
6aa8b732 | 268 | |
cea7bb21 | 269 | int is_error_page(struct page *page); |
35149e21 | 270 | int is_error_pfn(pfn_t pfn); |
bf998156 | 271 | int is_hwpoison_pfn(pfn_t pfn); |
edba23e5 | 272 | int is_fault_pfn(pfn_t pfn); |
f9d46eb0 | 273 | int kvm_is_error_hva(unsigned long addr); |
210c7c4d IE |
274 | int kvm_set_memory_region(struct kvm *kvm, |
275 | struct kvm_userspace_memory_region *mem, | |
276 | int user_alloc); | |
f78e0e2e SY |
277 | int __kvm_set_memory_region(struct kvm *kvm, |
278 | struct kvm_userspace_memory_region *mem, | |
279 | int user_alloc); | |
f7784b8e MT |
280 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
281 | struct kvm_memory_slot *memslot, | |
282 | struct kvm_memory_slot old, | |
283 | struct kvm_userspace_memory_region *mem, | |
284 | int user_alloc); | |
285 | void kvm_arch_commit_memory_region(struct kvm *kvm, | |
0de10343 ZX |
286 | struct kvm_userspace_memory_region *mem, |
287 | struct kvm_memory_slot old, | |
288 | int user_alloc); | |
54dee993 | 289 | void kvm_disable_largepages(void); |
34d4cb8f | 290 | void kvm_arch_flush_shadow(struct kvm *kvm); |
a983fb23 | 291 | |
954bbbc2 | 292 | struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); |
05da4558 | 293 | unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn); |
b4231d61 IE |
294 | void kvm_release_page_clean(struct page *page); |
295 | void kvm_release_page_dirty(struct page *page); | |
35149e21 AL |
296 | void kvm_set_page_dirty(struct page *page); |
297 | void kvm_set_page_accessed(struct page *page); | |
298 | ||
887c08ac | 299 | pfn_t hva_to_pfn_atomic(struct kvm *kvm, unsigned long addr); |
35149e21 | 300 | pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn); |
506f0d6f MT |
301 | pfn_t gfn_to_pfn_memslot(struct kvm *kvm, |
302 | struct kvm_memory_slot *slot, gfn_t gfn); | |
bc6678a3 | 303 | int memslot_id(struct kvm *kvm, gfn_t gfn); |
35149e21 AL |
304 | void kvm_release_pfn_dirty(pfn_t); |
305 | void kvm_release_pfn_clean(pfn_t pfn); | |
306 | void kvm_set_pfn_dirty(pfn_t pfn); | |
307 | void kvm_set_pfn_accessed(pfn_t pfn); | |
308 | void kvm_get_pfn(pfn_t pfn); | |
309 | ||
195aefde IE |
310 | int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, |
311 | int len); | |
7ec54588 MT |
312 | int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data, |
313 | unsigned long len); | |
195aefde IE |
314 | int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); |
315 | int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, | |
316 | int offset, int len); | |
317 | int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, | |
318 | unsigned long len); | |
319 | int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); | |
320 | int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); | |
6aa8b732 | 321 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); |
e0d62c7f | 322 | int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); |
8f0b1ab6 | 323 | unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn); |
6aa8b732 AK |
324 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); |
325 | ||
8776e519 | 326 | void kvm_vcpu_block(struct kvm_vcpu *vcpu); |
d255f4f2 | 327 | void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu); |
6aa8b732 | 328 | void kvm_resched(struct kvm_vcpu *vcpu); |
7702fd1f AK |
329 | void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); |
330 | void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); | |
d9e368d6 | 331 | void kvm_flush_remote_tlbs(struct kvm *kvm); |
2e53d63a | 332 | void kvm_reload_remote_mmus(struct kvm *kvm); |
6aa8b732 | 333 | |
043405e1 CO |
334 | long kvm_arch_dev_ioctl(struct file *filp, |
335 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 CO |
336 | long kvm_arch_vcpu_ioctl(struct file *filp, |
337 | unsigned int ioctl, unsigned long arg); | |
018d00d2 ZX |
338 | |
339 | int kvm_dev_ioctl_check_extension(long ext); | |
340 | ||
5bb064dc ZX |
341 | int kvm_get_dirty_log(struct kvm *kvm, |
342 | struct kvm_dirty_log *log, int *is_dirty); | |
343 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, | |
344 | struct kvm_dirty_log *log); | |
345 | ||
1fe779f8 CO |
346 | int kvm_vm_ioctl_set_memory_region(struct kvm *kvm, |
347 | struct | |
348 | kvm_userspace_memory_region *mem, | |
349 | int user_alloc); | |
350 | long kvm_arch_vm_ioctl(struct file *filp, | |
351 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 | 352 | |
d0752060 HB |
353 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); |
354 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); | |
355 | ||
8b006791 ZX |
356 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, |
357 | struct kvm_translation *tr); | |
358 | ||
b6c7a5dc HB |
359 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); |
360 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); | |
361 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
362 | struct kvm_sregs *sregs); | |
363 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
364 | struct kvm_sregs *sregs); | |
62d9f0db MT |
365 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
366 | struct kvm_mp_state *mp_state); | |
367 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
368 | struct kvm_mp_state *mp_state); | |
d0bfb940 JK |
369 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
370 | struct kvm_guest_debug *dbg); | |
b6c7a5dc HB |
371 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); |
372 | ||
f8c16bba ZX |
373 | int kvm_arch_init(void *opaque); |
374 | void kvm_arch_exit(void); | |
043405e1 | 375 | |
e9b11c17 ZX |
376 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); |
377 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu); | |
378 | ||
379 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu); | |
380 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
381 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); | |
382 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); | |
26e5215f | 383 | int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu); |
d40ccc62 | 384 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu); |
e9b11c17 ZX |
385 | |
386 | int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu); | |
10474ae8 | 387 | int kvm_arch_hardware_enable(void *garbage); |
e9b11c17 ZX |
388 | void kvm_arch_hardware_disable(void *garbage); |
389 | int kvm_arch_hardware_setup(void); | |
390 | void kvm_arch_hardware_unsetup(void); | |
391 | void kvm_arch_check_processor_compat(void *rtn); | |
1d737c8a | 392 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu); |
e9b11c17 | 393 | |
d19a9cd2 ZX |
394 | void kvm_free_physmem(struct kvm *kvm); |
395 | ||
396 | struct kvm *kvm_arch_create_vm(void); | |
397 | void kvm_arch_destroy_vm(struct kvm *kvm); | |
8a98f664 | 398 | void kvm_free_all_assigned_devices(struct kvm *kvm); |
ad8ba2cd | 399 | void kvm_arch_sync_events(struct kvm *kvm); |
e9b11c17 | 400 | |
3d80840d | 401 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu); |
5736199a | 402 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
682c59a3 | 403 | |
c77fb9dc XZ |
404 | int kvm_is_mmio_pfn(pfn_t pfn); |
405 | ||
62c476c7 BAY |
406 | struct kvm_irq_ack_notifier { |
407 | struct hlist_node link; | |
408 | unsigned gsi; | |
409 | void (*irq_acked)(struct kvm_irq_ack_notifier *kian); | |
410 | }; | |
411 | ||
2350bd1f | 412 | #define KVM_ASSIGNED_MSIX_PENDING 0x1 |
c1e01514 SY |
413 | struct kvm_guest_msix_entry { |
414 | u32 vector; | |
415 | u16 entry; | |
416 | u16 flags; | |
417 | }; | |
418 | ||
62c476c7 BAY |
419 | struct kvm_assigned_dev_kernel { |
420 | struct kvm_irq_ack_notifier ack_notifier; | |
421 | struct work_struct interrupt_work; | |
422 | struct list_head list; | |
423 | int assigned_dev_id; | |
ab9f4ecb | 424 | int host_segnr; |
62c476c7 BAY |
425 | int host_busnr; |
426 | int host_devfn; | |
c1e01514 | 427 | unsigned int entries_nr; |
62c476c7 | 428 | int host_irq; |
defaf158 | 429 | bool host_irq_disabled; |
c1e01514 | 430 | struct msix_entry *host_msix_entries; |
62c476c7 | 431 | int guest_irq; |
c1e01514 | 432 | struct kvm_guest_msix_entry *guest_msix_entries; |
4f906c19 | 433 | unsigned long irq_requested_type; |
5550af4d | 434 | int irq_source_id; |
b653574a | 435 | int flags; |
62c476c7 BAY |
436 | struct pci_dev *dev; |
437 | struct kvm *kvm; | |
547de29e | 438 | spinlock_t assigned_dev_lock; |
62c476c7 | 439 | }; |
75858a84 AK |
440 | |
441 | struct kvm_irq_mask_notifier { | |
442 | void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked); | |
443 | int irq; | |
444 | struct hlist_node link; | |
445 | }; | |
446 | ||
447 | void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq, | |
448 | struct kvm_irq_mask_notifier *kimn); | |
449 | void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq, | |
450 | struct kvm_irq_mask_notifier *kimn); | |
4a994358 GN |
451 | void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin, |
452 | bool mask); | |
75858a84 | 453 | |
46e624b9 GN |
454 | #ifdef __KVM_HAVE_IOAPIC |
455 | void kvm_get_intr_delivery_bitmask(struct kvm_ioapic *ioapic, | |
456 | union kvm_ioapic_redirect_entry *entry, | |
457 | unsigned long *deliver_bitmask); | |
458 | #endif | |
459 | int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level); | |
44882eed | 460 | void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin); |
3de42dc0 XZ |
461 | void kvm_register_irq_ack_notifier(struct kvm *kvm, |
462 | struct kvm_irq_ack_notifier *kian); | |
fa40a821 MT |
463 | void kvm_unregister_irq_ack_notifier(struct kvm *kvm, |
464 | struct kvm_irq_ack_notifier *kian); | |
5550af4d SY |
465 | int kvm_request_irq_source_id(struct kvm *kvm); |
466 | void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id); | |
62c476c7 | 467 | |
522c68c4 SY |
468 | /* For vcpu->arch.iommu_flags */ |
469 | #define KVM_IOMMU_CACHE_COHERENCY 0x1 | |
470 | ||
19de40a8 | 471 | #ifdef CONFIG_IOMMU_API |
3ad26d81 | 472 | int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
260782bc | 473 | int kvm_iommu_map_guest(struct kvm *kvm); |
62c476c7 | 474 | int kvm_iommu_unmap_guest(struct kvm *kvm); |
260782bc WH |
475 | int kvm_assign_device(struct kvm *kvm, |
476 | struct kvm_assigned_dev_kernel *assigned_dev); | |
0a920356 WH |
477 | int kvm_deassign_device(struct kvm *kvm, |
478 | struct kvm_assigned_dev_kernel *assigned_dev); | |
19de40a8 | 479 | #else /* CONFIG_IOMMU_API */ |
62c476c7 BAY |
480 | static inline int kvm_iommu_map_pages(struct kvm *kvm, |
481 | gfn_t base_gfn, | |
482 | unsigned long npages) | |
483 | { | |
484 | return 0; | |
485 | } | |
486 | ||
260782bc | 487 | static inline int kvm_iommu_map_guest(struct kvm *kvm) |
62c476c7 BAY |
488 | { |
489 | return -ENODEV; | |
490 | } | |
491 | ||
492 | static inline int kvm_iommu_unmap_guest(struct kvm *kvm) | |
493 | { | |
494 | return 0; | |
495 | } | |
260782bc WH |
496 | |
497 | static inline int kvm_assign_device(struct kvm *kvm, | |
498 | struct kvm_assigned_dev_kernel *assigned_dev) | |
499 | { | |
500 | return 0; | |
501 | } | |
0a920356 WH |
502 | |
503 | static inline int kvm_deassign_device(struct kvm *kvm, | |
504 | struct kvm_assigned_dev_kernel *assigned_dev) | |
505 | { | |
506 | return 0; | |
507 | } | |
19de40a8 | 508 | #endif /* CONFIG_IOMMU_API */ |
62c476c7 | 509 | |
d172fcd3 LV |
510 | static inline void kvm_guest_enter(void) |
511 | { | |
e56a7a28 | 512 | account_system_vtime(current); |
d172fcd3 LV |
513 | current->flags |= PF_VCPU; |
514 | } | |
515 | ||
516 | static inline void kvm_guest_exit(void) | |
517 | { | |
e56a7a28 | 518 | account_system_vtime(current); |
d172fcd3 LV |
519 | current->flags &= ~PF_VCPU; |
520 | } | |
521 | ||
887c08ac XG |
522 | static inline unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, |
523 | gfn_t gfn) | |
524 | { | |
525 | return slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE; | |
526 | } | |
527 | ||
1755fbcc AK |
528 | static inline gpa_t gfn_to_gpa(gfn_t gfn) |
529 | { | |
530 | return (gpa_t)gfn << PAGE_SHIFT; | |
531 | } | |
6aa8b732 | 532 | |
62c476c7 BAY |
533 | static inline hpa_t pfn_to_hpa(pfn_t pfn) |
534 | { | |
535 | return (hpa_t)pfn << PAGE_SHIFT; | |
536 | } | |
537 | ||
2f599714 | 538 | static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu) |
2f52d58c AK |
539 | { |
540 | set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests); | |
541 | } | |
542 | ||
ba1389b7 AK |
543 | enum kvm_stat_kind { |
544 | KVM_STAT_VM, | |
545 | KVM_STAT_VCPU, | |
546 | }; | |
547 | ||
417bc304 HB |
548 | struct kvm_stats_debugfs_item { |
549 | const char *name; | |
550 | int offset; | |
ba1389b7 | 551 | enum kvm_stat_kind kind; |
417bc304 HB |
552 | struct dentry *dentry; |
553 | }; | |
554 | extern struct kvm_stats_debugfs_item debugfs_entries[]; | |
76f7c879 | 555 | extern struct dentry *kvm_debugfs_dir; |
d4c9ff2d | 556 | |
e930bffe AA |
557 | #ifdef KVM_ARCH_WANT_MMU_NOTIFIER |
558 | static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_seq) | |
559 | { | |
560 | if (unlikely(vcpu->kvm->mmu_notifier_count)) | |
561 | return 1; | |
562 | /* | |
563 | * Both reads happen under the mmu_lock and both values are | |
564 | * modified under mmu_lock, so there's no need of smb_rmb() | |
565 | * here in between, otherwise mmu_notifier_count should be | |
566 | * read before mmu_notifier_seq, see | |
567 | * mmu_notifier_invalidate_range_end write side. | |
568 | */ | |
569 | if (vcpu->kvm->mmu_notifier_seq != mmu_seq) | |
570 | return 1; | |
571 | return 0; | |
572 | } | |
573 | #endif | |
574 | ||
399ec807 AK |
575 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
576 | ||
577 | #define KVM_MAX_IRQ_ROUTES 1024 | |
578 | ||
579 | int kvm_setup_default_irq_routing(struct kvm *kvm); | |
580 | int kvm_set_irq_routing(struct kvm *kvm, | |
581 | const struct kvm_irq_routing_entry *entries, | |
582 | unsigned nr, | |
583 | unsigned flags); | |
584 | void kvm_free_irq_routing(struct kvm *kvm); | |
585 | ||
586 | #else | |
587 | ||
588 | static inline void kvm_free_irq_routing(struct kvm *kvm) {} | |
589 | ||
590 | #endif | |
591 | ||
721eecbf GH |
592 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
593 | ||
d34e6b17 | 594 | void kvm_eventfd_init(struct kvm *kvm); |
721eecbf GH |
595 | int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags); |
596 | void kvm_irqfd_release(struct kvm *kvm); | |
d34e6b17 | 597 | int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args); |
721eecbf GH |
598 | |
599 | #else | |
600 | ||
d34e6b17 | 601 | static inline void kvm_eventfd_init(struct kvm *kvm) {} |
721eecbf GH |
602 | static inline int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags) |
603 | { | |
604 | return -EINVAL; | |
605 | } | |
606 | ||
607 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
d34e6b17 GH |
608 | static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) |
609 | { | |
610 | return -ENOSYS; | |
611 | } | |
721eecbf GH |
612 | |
613 | #endif /* CONFIG_HAVE_KVM_EVENTFD */ | |
614 | ||
73880c80 | 615 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
c5af89b6 GN |
616 | static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu) |
617 | { | |
d3efc8ef | 618 | return vcpu->kvm->bsp_vcpu_id == vcpu->vcpu_id; |
c5af89b6 | 619 | } |
6aa8b732 | 620 | #endif |
bfd99ff5 AK |
621 | |
622 | #ifdef __KVM_HAVE_DEVICE_ASSIGNMENT | |
623 | ||
624 | long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, | |
625 | unsigned long arg); | |
626 | ||
627 | #else | |
628 | ||
629 | static inline long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, | |
630 | unsigned long arg) | |
631 | { | |
632 | return -ENOTTY; | |
633 | } | |
634 | ||
73880c80 | 635 | #endif |
bfd99ff5 | 636 | |
a8eeb04a AK |
637 | static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu) |
638 | { | |
639 | set_bit(req, &vcpu->requests); | |
640 | } | |
641 | ||
642 | static inline bool kvm_make_check_request(int req, struct kvm_vcpu *vcpu) | |
643 | { | |
644 | return test_and_set_bit(req, &vcpu->requests); | |
645 | } | |
646 | ||
647 | static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu) | |
648 | { | |
0719837c AK |
649 | if (test_bit(req, &vcpu->requests)) { |
650 | clear_bit(req, &vcpu->requests); | |
651 | return true; | |
652 | } else { | |
653 | return false; | |
654 | } | |
a8eeb04a AK |
655 | } |
656 | ||
bfd99ff5 AK |
657 | #endif |
658 |