Commit | Line | Data |
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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> |
d4c9ff2d | 18 | #include <linux/marker.h> |
0937c48d | 19 | #include <linux/msi.h> |
e8edc6e0 | 20 | #include <asm/signal.h> |
6aa8b732 | 21 | |
6aa8b732 | 22 | #include <linux/kvm.h> |
102d8325 | 23 | #include <linux/kvm_para.h> |
6aa8b732 | 24 | |
edf88417 | 25 | #include <linux/kvm_types.h> |
d77a39d9 | 26 | |
edf88417 | 27 | #include <asm/kvm_host.h> |
d657a98e | 28 | |
d9e368d6 AK |
29 | /* |
30 | * vcpu->requests bit members | |
31 | */ | |
3176bc3e | 32 | #define KVM_REQ_TLB_FLUSH 0 |
2f52d58c | 33 | #define KVM_REQ_MIGRATE_TIMER 1 |
b209749f | 34 | #define KVM_REQ_REPORT_TPR_ACCESS 2 |
2e53d63a | 35 | #define KVM_REQ_MMU_RELOAD 3 |
71c4dfaf | 36 | #define KVM_REQ_TRIPLE_FAULT 4 |
06e05645 | 37 | #define KVM_REQ_PENDING_TIMER 5 |
d7690175 | 38 | #define KVM_REQ_UNHALT 6 |
4731d4c7 | 39 | #define KVM_REQ_MMU_SYNC 7 |
6aa8b732 | 40 | |
5550af4d SY |
41 | #define KVM_USERSPACE_IRQ_SOURCE_ID 0 |
42 | ||
6aa8b732 | 43 | struct kvm_vcpu; |
c16f862d | 44 | extern struct kmem_cache *kvm_vcpu_cache; |
6aa8b732 | 45 | |
2eeb2e94 GH |
46 | /* |
47 | * It would be nice to use something smarter than a linear search, TBD... | |
48 | * Thankfully we dont expect many devices to register (famous last words :), | |
49 | * so until then it will suffice. At least its abstracted so we can change | |
50 | * in one place. | |
51 | */ | |
52 | struct kvm_io_bus { | |
53 | int dev_count; | |
54 | #define NR_IOBUS_DEVS 6 | |
55 | struct kvm_io_device *devs[NR_IOBUS_DEVS]; | |
56 | }; | |
57 | ||
58 | void kvm_io_bus_init(struct kvm_io_bus *bus); | |
59 | void kvm_io_bus_destroy(struct kvm_io_bus *bus); | |
92760499 LV |
60 | struct kvm_io_device *kvm_io_bus_find_dev(struct kvm_io_bus *bus, |
61 | gpa_t addr, int len, int is_write); | |
2eeb2e94 GH |
62 | void kvm_io_bus_register_dev(struct kvm_io_bus *bus, |
63 | struct kvm_io_device *dev); | |
64 | ||
d17fbbf7 ZX |
65 | struct kvm_vcpu { |
66 | struct kvm *kvm; | |
31bb117e | 67 | #ifdef CONFIG_PREEMPT_NOTIFIERS |
d17fbbf7 | 68 | struct preempt_notifier preempt_notifier; |
31bb117e | 69 | #endif |
d17fbbf7 ZX |
70 | int vcpu_id; |
71 | struct mutex mutex; | |
72 | int cpu; | |
73 | struct kvm_run *run; | |
74 | int guest_mode; | |
75 | unsigned long requests; | |
d0bfb940 | 76 | unsigned long guest_debug; |
d17fbbf7 ZX |
77 | int fpu_active; |
78 | int guest_fpu_loaded; | |
79 | wait_queue_head_t wq; | |
80 | int sigset_active; | |
81 | sigset_t sigset; | |
82 | struct kvm_vcpu_stat stat; | |
83 | ||
34c16eec | 84 | #ifdef CONFIG_HAS_IOMEM |
d17fbbf7 ZX |
85 | int mmio_needed; |
86 | int mmio_read_completed; | |
87 | int mmio_is_write; | |
88 | int mmio_size; | |
89 | unsigned char mmio_data[8]; | |
6aa8b732 | 90 | gpa_t mmio_phys_addr; |
34c16eec | 91 | #endif |
1165f5fe | 92 | |
d657a98e ZX |
93 | struct kvm_vcpu_arch arch; |
94 | }; | |
95 | ||
6aa8b732 AK |
96 | struct kvm_memory_slot { |
97 | gfn_t base_gfn; | |
98 | unsigned long npages; | |
99 | unsigned long flags; | |
290fc38d | 100 | unsigned long *rmap; |
6aa8b732 | 101 | unsigned long *dirty_bitmap; |
05da4558 MT |
102 | struct { |
103 | unsigned long rmap_pde; | |
104 | int write_count; | |
105 | } *lpage_info; | |
8a7ae055 | 106 | unsigned long userspace_addr; |
80b14b5b | 107 | int user_alloc; |
6aa8b732 AK |
108 | }; |
109 | ||
110 | struct kvm { | |
aaee2c94 MT |
111 | struct mutex lock; /* protects the vcpus array and APIC accesses */ |
112 | spinlock_t mmu_lock; | |
72dc67a6 | 113 | struct rw_semaphore slots_lock; |
6d4e4c4f | 114 | struct mm_struct *mm; /* userspace tied to this vm */ |
6aa8b732 | 115 | int nmemslots; |
e0d62c7f IE |
116 | struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS + |
117 | KVM_PRIVATE_MEM_SLOTS]; | |
fb3f0f51 | 118 | struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; |
133de902 | 119 | struct list_head vm_list; |
2eeb2e94 | 120 | struct kvm_io_bus mmio_bus; |
74906345 | 121 | struct kvm_io_bus pio_bus; |
ba1389b7 | 122 | struct kvm_vm_stat stat; |
d69fb81f | 123 | struct kvm_arch arch; |
d39f13b0 | 124 | atomic_t users_count; |
5f94c174 LV |
125 | #ifdef KVM_COALESCED_MMIO_PAGE_OFFSET |
126 | struct kvm_coalesced_mmio_dev *coalesced_mmio_dev; | |
127 | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; | |
128 | #endif | |
e930bffe | 129 | |
75858a84 AK |
130 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
131 | struct hlist_head mask_notifier_list; | |
132 | #endif | |
133 | ||
e930bffe AA |
134 | #ifdef KVM_ARCH_WANT_MMU_NOTIFIER |
135 | struct mmu_notifier mmu_notifier; | |
136 | unsigned long mmu_notifier_seq; | |
137 | long mmu_notifier_count; | |
138 | #endif | |
6aa8b732 AK |
139 | }; |
140 | ||
f0242478 RR |
141 | /* The guest did something we don't support. */ |
142 | #define pr_unimpl(vcpu, fmt, ...) \ | |
143 | do { \ | |
144 | if (printk_ratelimit()) \ | |
145 | printk(KERN_ERR "kvm: %i: cpu%i " fmt, \ | |
146 | current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \ | |
d77c26fc | 147 | } while (0) |
f0242478 | 148 | |
6aa8b732 AK |
149 | #define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt) |
150 | #define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt) | |
151 | ||
fb3f0f51 RR |
152 | int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id); |
153 | void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); | |
154 | ||
313a3dc7 CO |
155 | void vcpu_load(struct kvm_vcpu *vcpu); |
156 | void vcpu_put(struct kvm_vcpu *vcpu); | |
157 | ||
f8c16bba | 158 | int kvm_init(void *opaque, unsigned int vcpu_size, |
c16f862d | 159 | struct module *module); |
cb498ea2 | 160 | void kvm_exit(void); |
6aa8b732 | 161 | |
d39f13b0 IE |
162 | void kvm_get_kvm(struct kvm *kvm); |
163 | void kvm_put_kvm(struct kvm *kvm); | |
164 | ||
6aa8b732 AK |
165 | #define HPA_MSB ((sizeof(hpa_t) * 8) - 1) |
166 | #define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB) | |
167 | static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; } | |
039576c0 | 168 | struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva); |
6aa8b732 | 169 | |
cea7bb21 | 170 | extern struct page *bad_page; |
35149e21 | 171 | extern pfn_t bad_pfn; |
6aa8b732 | 172 | |
cea7bb21 | 173 | int is_error_page(struct page *page); |
35149e21 | 174 | int is_error_pfn(pfn_t pfn); |
f9d46eb0 | 175 | int kvm_is_error_hva(unsigned long addr); |
210c7c4d IE |
176 | int kvm_set_memory_region(struct kvm *kvm, |
177 | struct kvm_userspace_memory_region *mem, | |
178 | int user_alloc); | |
f78e0e2e SY |
179 | int __kvm_set_memory_region(struct kvm *kvm, |
180 | struct kvm_userspace_memory_region *mem, | |
181 | int user_alloc); | |
0de10343 ZX |
182 | int kvm_arch_set_memory_region(struct kvm *kvm, |
183 | struct kvm_userspace_memory_region *mem, | |
184 | struct kvm_memory_slot old, | |
185 | int user_alloc); | |
34d4cb8f | 186 | void kvm_arch_flush_shadow(struct kvm *kvm); |
290fc38d | 187 | gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn); |
954bbbc2 | 188 | struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); |
05da4558 | 189 | unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn); |
b4231d61 IE |
190 | void kvm_release_page_clean(struct page *page); |
191 | void kvm_release_page_dirty(struct page *page); | |
35149e21 AL |
192 | void kvm_set_page_dirty(struct page *page); |
193 | void kvm_set_page_accessed(struct page *page); | |
194 | ||
195 | pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn); | |
196 | void kvm_release_pfn_dirty(pfn_t); | |
197 | void kvm_release_pfn_clean(pfn_t pfn); | |
198 | void kvm_set_pfn_dirty(pfn_t pfn); | |
199 | void kvm_set_pfn_accessed(pfn_t pfn); | |
200 | void kvm_get_pfn(pfn_t pfn); | |
201 | ||
195aefde IE |
202 | int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, |
203 | int len); | |
7ec54588 MT |
204 | int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data, |
205 | unsigned long len); | |
195aefde IE |
206 | int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); |
207 | int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, | |
208 | int offset, int len); | |
209 | int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, | |
210 | unsigned long len); | |
211 | int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); | |
212 | int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); | |
6aa8b732 | 213 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); |
e0d62c7f | 214 | int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); |
6aa8b732 AK |
215 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); |
216 | ||
8776e519 | 217 | void kvm_vcpu_block(struct kvm_vcpu *vcpu); |
6aa8b732 | 218 | void kvm_resched(struct kvm_vcpu *vcpu); |
7702fd1f AK |
219 | void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); |
220 | void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); | |
d9e368d6 | 221 | void kvm_flush_remote_tlbs(struct kvm *kvm); |
2e53d63a | 222 | void kvm_reload_remote_mmus(struct kvm *kvm); |
6aa8b732 | 223 | |
043405e1 CO |
224 | long kvm_arch_dev_ioctl(struct file *filp, |
225 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 CO |
226 | long kvm_arch_vcpu_ioctl(struct file *filp, |
227 | unsigned int ioctl, unsigned long arg); | |
228 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
229 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); | |
018d00d2 ZX |
230 | |
231 | int kvm_dev_ioctl_check_extension(long ext); | |
232 | ||
5bb064dc ZX |
233 | int kvm_get_dirty_log(struct kvm *kvm, |
234 | struct kvm_dirty_log *log, int *is_dirty); | |
235 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, | |
236 | struct kvm_dirty_log *log); | |
237 | ||
1fe779f8 CO |
238 | int kvm_vm_ioctl_set_memory_region(struct kvm *kvm, |
239 | struct | |
240 | kvm_userspace_memory_region *mem, | |
241 | int user_alloc); | |
242 | long kvm_arch_vm_ioctl(struct file *filp, | |
243 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 | 244 | |
d0752060 HB |
245 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); |
246 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); | |
247 | ||
8b006791 ZX |
248 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, |
249 | struct kvm_translation *tr); | |
250 | ||
b6c7a5dc HB |
251 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); |
252 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); | |
253 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
254 | struct kvm_sregs *sregs); | |
255 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
256 | struct kvm_sregs *sregs); | |
62d9f0db MT |
257 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
258 | struct kvm_mp_state *mp_state); | |
259 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
260 | struct kvm_mp_state *mp_state); | |
d0bfb940 JK |
261 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
262 | struct kvm_guest_debug *dbg); | |
b6c7a5dc HB |
263 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); |
264 | ||
f8c16bba ZX |
265 | int kvm_arch_init(void *opaque); |
266 | void kvm_arch_exit(void); | |
043405e1 | 267 | |
e9b11c17 ZX |
268 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); |
269 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu); | |
270 | ||
271 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu); | |
272 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
273 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); | |
274 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); | |
26e5215f | 275 | int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu); |
d40ccc62 | 276 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu); |
e9b11c17 ZX |
277 | |
278 | int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu); | |
279 | void kvm_arch_hardware_enable(void *garbage); | |
280 | void kvm_arch_hardware_disable(void *garbage); | |
281 | int kvm_arch_hardware_setup(void); | |
282 | void kvm_arch_hardware_unsetup(void); | |
283 | void kvm_arch_check_processor_compat(void *rtn); | |
1d737c8a | 284 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu); |
e9b11c17 | 285 | |
d19a9cd2 ZX |
286 | void kvm_free_physmem(struct kvm *kvm); |
287 | ||
288 | struct kvm *kvm_arch_create_vm(void); | |
289 | void kvm_arch_destroy_vm(struct kvm *kvm); | |
8a98f664 | 290 | void kvm_free_all_assigned_devices(struct kvm *kvm); |
ad8ba2cd | 291 | void kvm_arch_sync_events(struct kvm *kvm); |
e9b11c17 | 292 | |
682c59a3 ZX |
293 | int kvm_cpu_get_interrupt(struct kvm_vcpu *v); |
294 | int kvm_cpu_has_interrupt(struct kvm_vcpu *v); | |
3d80840d | 295 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu); |
5736199a | 296 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
682c59a3 | 297 | |
c77fb9dc XZ |
298 | int kvm_is_mmio_pfn(pfn_t pfn); |
299 | ||
62c476c7 BAY |
300 | struct kvm_irq_ack_notifier { |
301 | struct hlist_node link; | |
302 | unsigned gsi; | |
303 | void (*irq_acked)(struct kvm_irq_ack_notifier *kian); | |
304 | }; | |
305 | ||
306 | struct kvm_assigned_dev_kernel { | |
307 | struct kvm_irq_ack_notifier ack_notifier; | |
308 | struct work_struct interrupt_work; | |
309 | struct list_head list; | |
310 | int assigned_dev_id; | |
311 | int host_busnr; | |
312 | int host_devfn; | |
313 | int host_irq; | |
defaf158 | 314 | bool host_irq_disabled; |
62c476c7 | 315 | int guest_irq; |
0937c48d | 316 | struct msi_msg guest_msi; |
4f906c19 | 317 | #define KVM_ASSIGNED_DEV_GUEST_INTX (1 << 0) |
0937c48d | 318 | #define KVM_ASSIGNED_DEV_GUEST_MSI (1 << 1) |
4f906c19 | 319 | #define KVM_ASSIGNED_DEV_HOST_INTX (1 << 8) |
0937c48d | 320 | #define KVM_ASSIGNED_DEV_HOST_MSI (1 << 9) |
4f906c19 | 321 | unsigned long irq_requested_type; |
5550af4d | 322 | int irq_source_id; |
b653574a | 323 | int flags; |
62c476c7 BAY |
324 | struct pci_dev *dev; |
325 | struct kvm *kvm; | |
326 | }; | |
75858a84 AK |
327 | |
328 | struct kvm_irq_mask_notifier { | |
329 | void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked); | |
330 | int irq; | |
331 | struct hlist_node link; | |
332 | }; | |
333 | ||
334 | void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq, | |
335 | struct kvm_irq_mask_notifier *kimn); | |
336 | void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq, | |
337 | struct kvm_irq_mask_notifier *kimn); | |
338 | void kvm_fire_mask_notifiers(struct kvm *kvm, int irq, bool mask); | |
339 | ||
5550af4d | 340 | void kvm_set_irq(struct kvm *kvm, int irq_source_id, int irq, int level); |
3de42dc0 XZ |
341 | void kvm_notify_acked_irq(struct kvm *kvm, unsigned gsi); |
342 | void kvm_register_irq_ack_notifier(struct kvm *kvm, | |
343 | struct kvm_irq_ack_notifier *kian); | |
e19e30ef | 344 | void kvm_unregister_irq_ack_notifier(struct kvm_irq_ack_notifier *kian); |
5550af4d SY |
345 | int kvm_request_irq_source_id(struct kvm *kvm); |
346 | void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id); | |
62c476c7 | 347 | |
19de40a8 | 348 | #ifdef CONFIG_IOMMU_API |
62c476c7 BAY |
349 | int kvm_iommu_map_pages(struct kvm *kvm, gfn_t base_gfn, |
350 | unsigned long npages); | |
260782bc | 351 | int kvm_iommu_map_guest(struct kvm *kvm); |
62c476c7 | 352 | int kvm_iommu_unmap_guest(struct kvm *kvm); |
260782bc WH |
353 | int kvm_assign_device(struct kvm *kvm, |
354 | struct kvm_assigned_dev_kernel *assigned_dev); | |
0a920356 WH |
355 | int kvm_deassign_device(struct kvm *kvm, |
356 | struct kvm_assigned_dev_kernel *assigned_dev); | |
19de40a8 | 357 | #else /* CONFIG_IOMMU_API */ |
62c476c7 BAY |
358 | static inline int kvm_iommu_map_pages(struct kvm *kvm, |
359 | gfn_t base_gfn, | |
360 | unsigned long npages) | |
361 | { | |
362 | return 0; | |
363 | } | |
364 | ||
260782bc | 365 | static inline int kvm_iommu_map_guest(struct kvm *kvm) |
62c476c7 BAY |
366 | { |
367 | return -ENODEV; | |
368 | } | |
369 | ||
370 | static inline int kvm_iommu_unmap_guest(struct kvm *kvm) | |
371 | { | |
372 | return 0; | |
373 | } | |
260782bc WH |
374 | |
375 | static inline int kvm_assign_device(struct kvm *kvm, | |
376 | struct kvm_assigned_dev_kernel *assigned_dev) | |
377 | { | |
378 | return 0; | |
379 | } | |
0a920356 WH |
380 | |
381 | static inline int kvm_deassign_device(struct kvm *kvm, | |
382 | struct kvm_assigned_dev_kernel *assigned_dev) | |
383 | { | |
384 | return 0; | |
385 | } | |
19de40a8 | 386 | #endif /* CONFIG_IOMMU_API */ |
62c476c7 | 387 | |
d172fcd3 LV |
388 | static inline void kvm_guest_enter(void) |
389 | { | |
e56a7a28 | 390 | account_system_vtime(current); |
d172fcd3 LV |
391 | current->flags |= PF_VCPU; |
392 | } | |
393 | ||
394 | static inline void kvm_guest_exit(void) | |
395 | { | |
e56a7a28 | 396 | account_system_vtime(current); |
d172fcd3 LV |
397 | current->flags &= ~PF_VCPU; |
398 | } | |
399 | ||
6aa8b732 AK |
400 | static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot) |
401 | { | |
402 | return slot - kvm->memslots; | |
403 | } | |
404 | ||
1755fbcc AK |
405 | static inline gpa_t gfn_to_gpa(gfn_t gfn) |
406 | { | |
407 | return (gpa_t)gfn << PAGE_SHIFT; | |
408 | } | |
6aa8b732 | 409 | |
62c476c7 BAY |
410 | static inline hpa_t pfn_to_hpa(pfn_t pfn) |
411 | { | |
412 | return (hpa_t)pfn << PAGE_SHIFT; | |
413 | } | |
414 | ||
2f599714 | 415 | static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu) |
2f52d58c AK |
416 | { |
417 | set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests); | |
418 | } | |
419 | ||
ba1389b7 AK |
420 | enum kvm_stat_kind { |
421 | KVM_STAT_VM, | |
422 | KVM_STAT_VCPU, | |
423 | }; | |
424 | ||
417bc304 HB |
425 | struct kvm_stats_debugfs_item { |
426 | const char *name; | |
427 | int offset; | |
ba1389b7 | 428 | enum kvm_stat_kind kind; |
417bc304 HB |
429 | struct dentry *dentry; |
430 | }; | |
431 | extern struct kvm_stats_debugfs_item debugfs_entries[]; | |
76f7c879 | 432 | extern struct dentry *kvm_debugfs_dir; |
d4c9ff2d | 433 | |
d98e6346 HB |
434 | #define KVMTRACE_5D(evt, vcpu, d1, d2, d3, d4, d5, name) \ |
435 | trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \ | |
436 | vcpu, 5, d1, d2, d3, d4, d5) | |
437 | #define KVMTRACE_4D(evt, vcpu, d1, d2, d3, d4, name) \ | |
438 | trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \ | |
439 | vcpu, 4, d1, d2, d3, d4, 0) | |
440 | #define KVMTRACE_3D(evt, vcpu, d1, d2, d3, name) \ | |
441 | trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \ | |
442 | vcpu, 3, d1, d2, d3, 0, 0) | |
443 | #define KVMTRACE_2D(evt, vcpu, d1, d2, name) \ | |
444 | trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \ | |
445 | vcpu, 2, d1, d2, 0, 0, 0) | |
446 | #define KVMTRACE_1D(evt, vcpu, d1, name) \ | |
447 | trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \ | |
448 | vcpu, 1, d1, 0, 0, 0, 0) | |
449 | #define KVMTRACE_0D(evt, vcpu, name) \ | |
450 | trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \ | |
451 | vcpu, 0, 0, 0, 0, 0, 0) | |
452 | ||
d4c9ff2d FEL |
453 | #ifdef CONFIG_KVM_TRACE |
454 | int kvm_trace_ioctl(unsigned int ioctl, unsigned long arg); | |
455 | void kvm_trace_cleanup(void); | |
456 | #else | |
457 | static inline | |
458 | int kvm_trace_ioctl(unsigned int ioctl, unsigned long arg) | |
459 | { | |
460 | return -EINVAL; | |
461 | } | |
462 | #define kvm_trace_cleanup() ((void)0) | |
463 | #endif | |
417bc304 | 464 | |
e930bffe AA |
465 | #ifdef KVM_ARCH_WANT_MMU_NOTIFIER |
466 | static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_seq) | |
467 | { | |
468 | if (unlikely(vcpu->kvm->mmu_notifier_count)) | |
469 | return 1; | |
470 | /* | |
471 | * Both reads happen under the mmu_lock and both values are | |
472 | * modified under mmu_lock, so there's no need of smb_rmb() | |
473 | * here in between, otherwise mmu_notifier_count should be | |
474 | * read before mmu_notifier_seq, see | |
475 | * mmu_notifier_invalidate_range_end write side. | |
476 | */ | |
477 | if (vcpu->kvm->mmu_notifier_seq != mmu_seq) | |
478 | return 1; | |
479 | return 0; | |
480 | } | |
481 | #endif | |
482 | ||
6aa8b732 | 483 | #endif |