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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 |
6aa8b732 | 41 | |
5550af4d SY |
42 | #define KVM_USERSPACE_IRQ_SOURCE_ID 0 |
43 | ||
6c474694 | 44 | struct kvm; |
6aa8b732 | 45 | struct kvm_vcpu; |
c16f862d | 46 | extern struct kmem_cache *kvm_vcpu_cache; |
6aa8b732 | 47 | |
2eeb2e94 GH |
48 | /* |
49 | * It would be nice to use something smarter than a linear search, TBD... | |
50 | * Thankfully we dont expect many devices to register (famous last words :), | |
51 | * so until then it will suffice. At least its abstracted so we can change | |
52 | * in one place. | |
53 | */ | |
54 | struct kvm_io_bus { | |
55 | int dev_count; | |
56 | #define NR_IOBUS_DEVS 6 | |
57 | struct kvm_io_device *devs[NR_IOBUS_DEVS]; | |
58 | }; | |
59 | ||
60 | void kvm_io_bus_init(struct kvm_io_bus *bus); | |
61 | void kvm_io_bus_destroy(struct kvm_io_bus *bus); | |
bda9020e MT |
62 | int kvm_io_bus_write(struct kvm_io_bus *bus, gpa_t addr, int len, |
63 | const void *val); | |
64 | int kvm_io_bus_read(struct kvm_io_bus *bus, gpa_t addr, int len, | |
65 | void *val); | |
090b7aff GH |
66 | int __kvm_io_bus_register_dev(struct kvm_io_bus *bus, |
67 | struct kvm_io_device *dev); | |
68 | int kvm_io_bus_register_dev(struct kvm *kvm, struct kvm_io_bus *bus, | |
69 | struct kvm_io_device *dev); | |
70 | void __kvm_io_bus_unregister_dev(struct kvm_io_bus *bus, | |
71 | struct kvm_io_device *dev); | |
72 | void kvm_io_bus_unregister_dev(struct kvm *kvm, struct kvm_io_bus *bus, | |
6c474694 | 73 | struct kvm_io_device *dev); |
2eeb2e94 | 74 | |
d17fbbf7 ZX |
75 | struct kvm_vcpu { |
76 | struct kvm *kvm; | |
31bb117e | 77 | #ifdef CONFIG_PREEMPT_NOTIFIERS |
d17fbbf7 | 78 | struct preempt_notifier preempt_notifier; |
31bb117e | 79 | #endif |
d17fbbf7 ZX |
80 | int vcpu_id; |
81 | struct mutex mutex; | |
82 | int cpu; | |
83 | struct kvm_run *run; | |
d17fbbf7 | 84 | unsigned long requests; |
d0bfb940 | 85 | unsigned long guest_debug; |
d17fbbf7 ZX |
86 | int fpu_active; |
87 | int guest_fpu_loaded; | |
88 | wait_queue_head_t wq; | |
89 | int sigset_active; | |
90 | sigset_t sigset; | |
91 | struct kvm_vcpu_stat stat; | |
92 | ||
34c16eec | 93 | #ifdef CONFIG_HAS_IOMEM |
d17fbbf7 ZX |
94 | int mmio_needed; |
95 | int mmio_read_completed; | |
96 | int mmio_is_write; | |
97 | int mmio_size; | |
98 | unsigned char mmio_data[8]; | |
6aa8b732 | 99 | gpa_t mmio_phys_addr; |
34c16eec | 100 | #endif |
1165f5fe | 101 | |
d657a98e ZX |
102 | struct kvm_vcpu_arch arch; |
103 | }; | |
104 | ||
6aa8b732 AK |
105 | struct kvm_memory_slot { |
106 | gfn_t base_gfn; | |
107 | unsigned long npages; | |
108 | unsigned long flags; | |
290fc38d | 109 | unsigned long *rmap; |
6aa8b732 | 110 | unsigned long *dirty_bitmap; |
05da4558 MT |
111 | struct { |
112 | unsigned long rmap_pde; | |
113 | int write_count; | |
ec04b260 | 114 | } *lpage_info[KVM_NR_PAGE_SIZES - 1]; |
8a7ae055 | 115 | unsigned long userspace_addr; |
80b14b5b | 116 | int user_alloc; |
6aa8b732 AK |
117 | }; |
118 | ||
399ec807 AK |
119 | struct kvm_kernel_irq_routing_entry { |
120 | u32 gsi; | |
5116d8f6 | 121 | u32 type; |
4925663a | 122 | int (*set)(struct kvm_kernel_irq_routing_entry *e, |
399ec807 AK |
123 | struct kvm *kvm, int level); |
124 | union { | |
125 | struct { | |
126 | unsigned irqchip; | |
127 | unsigned pin; | |
128 | } irqchip; | |
79950e10 | 129 | struct msi_msg msi; |
399ec807 AK |
130 | }; |
131 | struct list_head link; | |
132 | }; | |
133 | ||
6aa8b732 | 134 | struct kvm { |
aaee2c94 | 135 | spinlock_t mmu_lock; |
84261923 | 136 | spinlock_t requests_lock; |
72dc67a6 | 137 | struct rw_semaphore slots_lock; |
6d4e4c4f | 138 | struct mm_struct *mm; /* userspace tied to this vm */ |
6aa8b732 | 139 | int nmemslots; |
e0d62c7f IE |
140 | struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS + |
141 | KVM_PRIVATE_MEM_SLOTS]; | |
73880c80 GN |
142 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
143 | u32 bsp_vcpu_id; | |
c5af89b6 | 144 | struct kvm_vcpu *bsp_vcpu; |
73880c80 | 145 | #endif |
fb3f0f51 | 146 | struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; |
73880c80 | 147 | atomic_t online_vcpus; |
133de902 | 148 | struct list_head vm_list; |
60eead79 | 149 | struct mutex lock; |
2eeb2e94 | 150 | struct kvm_io_bus mmio_bus; |
74906345 | 151 | struct kvm_io_bus pio_bus; |
721eecbf GH |
152 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
153 | struct { | |
154 | spinlock_t lock; | |
155 | struct list_head items; | |
156 | } irqfds; | |
d34e6b17 | 157 | struct list_head ioeventfds; |
721eecbf | 158 | #endif |
ba1389b7 | 159 | struct kvm_vm_stat stat; |
d69fb81f | 160 | struct kvm_arch arch; |
d39f13b0 | 161 | atomic_t users_count; |
5f94c174 LV |
162 | #ifdef KVM_COALESCED_MMIO_PAGE_OFFSET |
163 | struct kvm_coalesced_mmio_dev *coalesced_mmio_dev; | |
164 | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; | |
165 | #endif | |
e930bffe | 166 | |
60eead79 | 167 | struct mutex irq_lock; |
75858a84 | 168 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
399ec807 | 169 | struct list_head irq_routing; /* of kvm_kernel_irq_routing_entry */ |
75858a84 AK |
170 | struct hlist_head mask_notifier_list; |
171 | #endif | |
172 | ||
e930bffe AA |
173 | #ifdef KVM_ARCH_WANT_MMU_NOTIFIER |
174 | struct mmu_notifier mmu_notifier; | |
175 | unsigned long mmu_notifier_seq; | |
176 | long mmu_notifier_count; | |
177 | #endif | |
6aa8b732 AK |
178 | }; |
179 | ||
f0242478 RR |
180 | /* The guest did something we don't support. */ |
181 | #define pr_unimpl(vcpu, fmt, ...) \ | |
182 | do { \ | |
183 | if (printk_ratelimit()) \ | |
184 | printk(KERN_ERR "kvm: %i: cpu%i " fmt, \ | |
185 | current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \ | |
d77c26fc | 186 | } while (0) |
f0242478 | 187 | |
6aa8b732 AK |
188 | #define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt) |
189 | #define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt) | |
190 | ||
988a2cae GN |
191 | static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i) |
192 | { | |
193 | smp_rmb(); | |
194 | return kvm->vcpus[i]; | |
195 | } | |
196 | ||
197 | #define kvm_for_each_vcpu(idx, vcpup, kvm) \ | |
198 | for (idx = 0, vcpup = kvm_get_vcpu(kvm, idx); \ | |
199 | idx < atomic_read(&kvm->online_vcpus) && vcpup; \ | |
200 | vcpup = kvm_get_vcpu(kvm, ++idx)) | |
201 | ||
fb3f0f51 RR |
202 | int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id); |
203 | void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); | |
204 | ||
313a3dc7 CO |
205 | void vcpu_load(struct kvm_vcpu *vcpu); |
206 | void vcpu_put(struct kvm_vcpu *vcpu); | |
207 | ||
f8c16bba | 208 | int kvm_init(void *opaque, unsigned int vcpu_size, |
c16f862d | 209 | struct module *module); |
cb498ea2 | 210 | void kvm_exit(void); |
6aa8b732 | 211 | |
d39f13b0 IE |
212 | void kvm_get_kvm(struct kvm *kvm); |
213 | void kvm_put_kvm(struct kvm *kvm); | |
214 | ||
6aa8b732 AK |
215 | #define HPA_MSB ((sizeof(hpa_t) * 8) - 1) |
216 | #define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB) | |
217 | static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; } | |
039576c0 | 218 | struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva); |
6aa8b732 | 219 | |
cea7bb21 | 220 | extern struct page *bad_page; |
35149e21 | 221 | extern pfn_t bad_pfn; |
6aa8b732 | 222 | |
cea7bb21 | 223 | int is_error_page(struct page *page); |
35149e21 | 224 | int is_error_pfn(pfn_t pfn); |
f9d46eb0 | 225 | int kvm_is_error_hva(unsigned long addr); |
210c7c4d IE |
226 | int kvm_set_memory_region(struct kvm *kvm, |
227 | struct kvm_userspace_memory_region *mem, | |
228 | int user_alloc); | |
f78e0e2e SY |
229 | int __kvm_set_memory_region(struct kvm *kvm, |
230 | struct kvm_userspace_memory_region *mem, | |
231 | int user_alloc); | |
0de10343 ZX |
232 | int kvm_arch_set_memory_region(struct kvm *kvm, |
233 | struct kvm_userspace_memory_region *mem, | |
234 | struct kvm_memory_slot old, | |
235 | int user_alloc); | |
54dee993 | 236 | void kvm_disable_largepages(void); |
34d4cb8f | 237 | void kvm_arch_flush_shadow(struct kvm *kvm); |
290fc38d | 238 | gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn); |
954bbbc2 | 239 | struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); |
05da4558 | 240 | unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn); |
b4231d61 IE |
241 | void kvm_release_page_clean(struct page *page); |
242 | void kvm_release_page_dirty(struct page *page); | |
35149e21 AL |
243 | void kvm_set_page_dirty(struct page *page); |
244 | void kvm_set_page_accessed(struct page *page); | |
245 | ||
246 | pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn); | |
247 | void kvm_release_pfn_dirty(pfn_t); | |
248 | void kvm_release_pfn_clean(pfn_t pfn); | |
249 | void kvm_set_pfn_dirty(pfn_t pfn); | |
250 | void kvm_set_pfn_accessed(pfn_t pfn); | |
251 | void kvm_get_pfn(pfn_t pfn); | |
252 | ||
195aefde IE |
253 | int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, |
254 | int len); | |
7ec54588 MT |
255 | int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data, |
256 | unsigned long len); | |
195aefde IE |
257 | int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); |
258 | int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, | |
259 | int offset, int len); | |
260 | int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, | |
261 | unsigned long len); | |
262 | int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); | |
263 | int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); | |
6aa8b732 | 264 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); |
e0d62c7f | 265 | int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); |
6aa8b732 AK |
266 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); |
267 | ||
8776e519 | 268 | void kvm_vcpu_block(struct kvm_vcpu *vcpu); |
6aa8b732 | 269 | void kvm_resched(struct kvm_vcpu *vcpu); |
7702fd1f AK |
270 | void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); |
271 | void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); | |
d9e368d6 | 272 | void kvm_flush_remote_tlbs(struct kvm *kvm); |
2e53d63a | 273 | void kvm_reload_remote_mmus(struct kvm *kvm); |
6aa8b732 | 274 | |
043405e1 CO |
275 | long kvm_arch_dev_ioctl(struct file *filp, |
276 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 CO |
277 | long kvm_arch_vcpu_ioctl(struct file *filp, |
278 | unsigned int ioctl, unsigned long arg); | |
018d00d2 ZX |
279 | |
280 | int kvm_dev_ioctl_check_extension(long ext); | |
281 | ||
5bb064dc ZX |
282 | int kvm_get_dirty_log(struct kvm *kvm, |
283 | struct kvm_dirty_log *log, int *is_dirty); | |
284 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, | |
285 | struct kvm_dirty_log *log); | |
286 | ||
1fe779f8 CO |
287 | int kvm_vm_ioctl_set_memory_region(struct kvm *kvm, |
288 | struct | |
289 | kvm_userspace_memory_region *mem, | |
290 | int user_alloc); | |
291 | long kvm_arch_vm_ioctl(struct file *filp, | |
292 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 | 293 | |
d0752060 HB |
294 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); |
295 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); | |
296 | ||
8b006791 ZX |
297 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, |
298 | struct kvm_translation *tr); | |
299 | ||
b6c7a5dc HB |
300 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); |
301 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); | |
302 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
303 | struct kvm_sregs *sregs); | |
304 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
305 | struct kvm_sregs *sregs); | |
62d9f0db MT |
306 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
307 | struct kvm_mp_state *mp_state); | |
308 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
309 | struct kvm_mp_state *mp_state); | |
d0bfb940 JK |
310 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
311 | struct kvm_guest_debug *dbg); | |
b6c7a5dc HB |
312 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); |
313 | ||
f8c16bba ZX |
314 | int kvm_arch_init(void *opaque); |
315 | void kvm_arch_exit(void); | |
043405e1 | 316 | |
e9b11c17 ZX |
317 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); |
318 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu); | |
319 | ||
320 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu); | |
321 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
322 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); | |
323 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); | |
26e5215f | 324 | int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu); |
d40ccc62 | 325 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu); |
e9b11c17 ZX |
326 | |
327 | int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu); | |
328 | void kvm_arch_hardware_enable(void *garbage); | |
329 | void kvm_arch_hardware_disable(void *garbage); | |
330 | int kvm_arch_hardware_setup(void); | |
331 | void kvm_arch_hardware_unsetup(void); | |
332 | void kvm_arch_check_processor_compat(void *rtn); | |
1d737c8a | 333 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu); |
e9b11c17 | 334 | |
d19a9cd2 ZX |
335 | void kvm_free_physmem(struct kvm *kvm); |
336 | ||
337 | struct kvm *kvm_arch_create_vm(void); | |
338 | void kvm_arch_destroy_vm(struct kvm *kvm); | |
8a98f664 | 339 | void kvm_free_all_assigned_devices(struct kvm *kvm); |
ad8ba2cd | 340 | void kvm_arch_sync_events(struct kvm *kvm); |
e9b11c17 | 341 | |
3d80840d | 342 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu); |
5736199a | 343 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
682c59a3 | 344 | |
c77fb9dc XZ |
345 | int kvm_is_mmio_pfn(pfn_t pfn); |
346 | ||
62c476c7 BAY |
347 | struct kvm_irq_ack_notifier { |
348 | struct hlist_node link; | |
349 | unsigned gsi; | |
350 | void (*irq_acked)(struct kvm_irq_ack_notifier *kian); | |
351 | }; | |
352 | ||
2350bd1f | 353 | #define KVM_ASSIGNED_MSIX_PENDING 0x1 |
c1e01514 SY |
354 | struct kvm_guest_msix_entry { |
355 | u32 vector; | |
356 | u16 entry; | |
357 | u16 flags; | |
358 | }; | |
359 | ||
62c476c7 BAY |
360 | struct kvm_assigned_dev_kernel { |
361 | struct kvm_irq_ack_notifier ack_notifier; | |
362 | struct work_struct interrupt_work; | |
363 | struct list_head list; | |
364 | int assigned_dev_id; | |
365 | int host_busnr; | |
366 | int host_devfn; | |
c1e01514 | 367 | unsigned int entries_nr; |
62c476c7 | 368 | int host_irq; |
defaf158 | 369 | bool host_irq_disabled; |
c1e01514 | 370 | struct msix_entry *host_msix_entries; |
62c476c7 | 371 | int guest_irq; |
c1e01514 | 372 | struct kvm_guest_msix_entry *guest_msix_entries; |
4f906c19 | 373 | unsigned long irq_requested_type; |
5550af4d | 374 | int irq_source_id; |
b653574a | 375 | int flags; |
62c476c7 BAY |
376 | struct pci_dev *dev; |
377 | struct kvm *kvm; | |
547de29e | 378 | spinlock_t assigned_dev_lock; |
62c476c7 | 379 | }; |
75858a84 AK |
380 | |
381 | struct kvm_irq_mask_notifier { | |
382 | void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked); | |
383 | int irq; | |
384 | struct hlist_node link; | |
385 | }; | |
386 | ||
387 | void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq, | |
388 | struct kvm_irq_mask_notifier *kimn); | |
389 | void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq, | |
390 | struct kvm_irq_mask_notifier *kimn); | |
391 | void kvm_fire_mask_notifiers(struct kvm *kvm, int irq, bool mask); | |
392 | ||
4925663a | 393 | int kvm_set_irq(struct kvm *kvm, int irq_source_id, int irq, int level); |
44882eed | 394 | void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin); |
3de42dc0 XZ |
395 | void kvm_register_irq_ack_notifier(struct kvm *kvm, |
396 | struct kvm_irq_ack_notifier *kian); | |
fa40a821 MT |
397 | void kvm_unregister_irq_ack_notifier(struct kvm *kvm, |
398 | struct kvm_irq_ack_notifier *kian); | |
5550af4d SY |
399 | int kvm_request_irq_source_id(struct kvm *kvm); |
400 | void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id); | |
62c476c7 | 401 | |
522c68c4 SY |
402 | /* For vcpu->arch.iommu_flags */ |
403 | #define KVM_IOMMU_CACHE_COHERENCY 0x1 | |
404 | ||
19de40a8 | 405 | #ifdef CONFIG_IOMMU_API |
62c476c7 BAY |
406 | int kvm_iommu_map_pages(struct kvm *kvm, gfn_t base_gfn, |
407 | unsigned long npages); | |
260782bc | 408 | int kvm_iommu_map_guest(struct kvm *kvm); |
62c476c7 | 409 | int kvm_iommu_unmap_guest(struct kvm *kvm); |
260782bc WH |
410 | int kvm_assign_device(struct kvm *kvm, |
411 | struct kvm_assigned_dev_kernel *assigned_dev); | |
0a920356 WH |
412 | int kvm_deassign_device(struct kvm *kvm, |
413 | struct kvm_assigned_dev_kernel *assigned_dev); | |
19de40a8 | 414 | #else /* CONFIG_IOMMU_API */ |
62c476c7 BAY |
415 | static inline int kvm_iommu_map_pages(struct kvm *kvm, |
416 | gfn_t base_gfn, | |
417 | unsigned long npages) | |
418 | { | |
419 | return 0; | |
420 | } | |
421 | ||
260782bc | 422 | static inline int kvm_iommu_map_guest(struct kvm *kvm) |
62c476c7 BAY |
423 | { |
424 | return -ENODEV; | |
425 | } | |
426 | ||
427 | static inline int kvm_iommu_unmap_guest(struct kvm *kvm) | |
428 | { | |
429 | return 0; | |
430 | } | |
260782bc WH |
431 | |
432 | static inline int kvm_assign_device(struct kvm *kvm, | |
433 | struct kvm_assigned_dev_kernel *assigned_dev) | |
434 | { | |
435 | return 0; | |
436 | } | |
0a920356 WH |
437 | |
438 | static inline int kvm_deassign_device(struct kvm *kvm, | |
439 | struct kvm_assigned_dev_kernel *assigned_dev) | |
440 | { | |
441 | return 0; | |
442 | } | |
19de40a8 | 443 | #endif /* CONFIG_IOMMU_API */ |
62c476c7 | 444 | |
d172fcd3 LV |
445 | static inline void kvm_guest_enter(void) |
446 | { | |
e56a7a28 | 447 | account_system_vtime(current); |
d172fcd3 LV |
448 | current->flags |= PF_VCPU; |
449 | } | |
450 | ||
451 | static inline void kvm_guest_exit(void) | |
452 | { | |
e56a7a28 | 453 | account_system_vtime(current); |
d172fcd3 LV |
454 | current->flags &= ~PF_VCPU; |
455 | } | |
456 | ||
6aa8b732 AK |
457 | static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot) |
458 | { | |
459 | return slot - kvm->memslots; | |
460 | } | |
461 | ||
1755fbcc AK |
462 | static inline gpa_t gfn_to_gpa(gfn_t gfn) |
463 | { | |
464 | return (gpa_t)gfn << PAGE_SHIFT; | |
465 | } | |
6aa8b732 | 466 | |
62c476c7 BAY |
467 | static inline hpa_t pfn_to_hpa(pfn_t pfn) |
468 | { | |
469 | return (hpa_t)pfn << PAGE_SHIFT; | |
470 | } | |
471 | ||
2f599714 | 472 | static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu) |
2f52d58c AK |
473 | { |
474 | set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests); | |
475 | } | |
476 | ||
ba1389b7 AK |
477 | enum kvm_stat_kind { |
478 | KVM_STAT_VM, | |
479 | KVM_STAT_VCPU, | |
480 | }; | |
481 | ||
417bc304 HB |
482 | struct kvm_stats_debugfs_item { |
483 | const char *name; | |
484 | int offset; | |
ba1389b7 | 485 | enum kvm_stat_kind kind; |
417bc304 HB |
486 | struct dentry *dentry; |
487 | }; | |
488 | extern struct kvm_stats_debugfs_item debugfs_entries[]; | |
76f7c879 | 489 | extern struct dentry *kvm_debugfs_dir; |
d4c9ff2d | 490 | |
e930bffe AA |
491 | #ifdef KVM_ARCH_WANT_MMU_NOTIFIER |
492 | static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_seq) | |
493 | { | |
494 | if (unlikely(vcpu->kvm->mmu_notifier_count)) | |
495 | return 1; | |
496 | /* | |
497 | * Both reads happen under the mmu_lock and both values are | |
498 | * modified under mmu_lock, so there's no need of smb_rmb() | |
499 | * here in between, otherwise mmu_notifier_count should be | |
500 | * read before mmu_notifier_seq, see | |
501 | * mmu_notifier_invalidate_range_end write side. | |
502 | */ | |
503 | if (vcpu->kvm->mmu_notifier_seq != mmu_seq) | |
504 | return 1; | |
505 | return 0; | |
506 | } | |
507 | #endif | |
508 | ||
399ec807 AK |
509 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
510 | ||
511 | #define KVM_MAX_IRQ_ROUTES 1024 | |
512 | ||
513 | int kvm_setup_default_irq_routing(struct kvm *kvm); | |
514 | int kvm_set_irq_routing(struct kvm *kvm, | |
515 | const struct kvm_irq_routing_entry *entries, | |
516 | unsigned nr, | |
517 | unsigned flags); | |
518 | void kvm_free_irq_routing(struct kvm *kvm); | |
519 | ||
520 | #else | |
521 | ||
522 | static inline void kvm_free_irq_routing(struct kvm *kvm) {} | |
523 | ||
524 | #endif | |
525 | ||
721eecbf GH |
526 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
527 | ||
d34e6b17 | 528 | void kvm_eventfd_init(struct kvm *kvm); |
721eecbf GH |
529 | int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags); |
530 | void kvm_irqfd_release(struct kvm *kvm); | |
d34e6b17 | 531 | int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args); |
721eecbf GH |
532 | |
533 | #else | |
534 | ||
d34e6b17 | 535 | static inline void kvm_eventfd_init(struct kvm *kvm) {} |
721eecbf GH |
536 | static inline int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags) |
537 | { | |
538 | return -EINVAL; | |
539 | } | |
540 | ||
541 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
d34e6b17 GH |
542 | static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) |
543 | { | |
544 | return -ENOSYS; | |
545 | } | |
721eecbf GH |
546 | |
547 | #endif /* CONFIG_HAVE_KVM_EVENTFD */ | |
548 | ||
73880c80 | 549 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
c5af89b6 GN |
550 | static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu) |
551 | { | |
d3efc8ef | 552 | return vcpu->kvm->bsp_vcpu_id == vcpu->vcpu_id; |
c5af89b6 | 553 | } |
6aa8b732 | 554 | #endif |
73880c80 | 555 | #endif |