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6aa8b732 AK |
1 | #ifndef __KVM_H |
2 | #define __KVM_H | |
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> |
e8edc6e0 | 18 | #include <asm/signal.h> |
6aa8b732 | 19 | |
6aa8b732 | 20 | #include <linux/kvm.h> |
102d8325 | 21 | #include <linux/kvm_para.h> |
6aa8b732 | 22 | |
d77a39d9 HB |
23 | #include "types.h" |
24 | ||
d657a98e ZX |
25 | #include "x86.h" |
26 | ||
ef9254df | 27 | #define KVM_MAX_VCPUS 4 |
2e2c618d | 28 | #define KVM_MEMORY_SLOTS 8 |
e0d62c7f IE |
29 | /* memory slots that does not exposed to userspace */ |
30 | #define KVM_PRIVATE_MEM_SLOTS 4 | |
6aa8b732 | 31 | |
039576c0 AK |
32 | #define KVM_PIO_PAGE_OFFSET 1 |
33 | ||
d9e368d6 AK |
34 | /* |
35 | * vcpu->requests bit members | |
36 | */ | |
3176bc3e | 37 | #define KVM_REQ_TLB_FLUSH 0 |
d9e368d6 | 38 | |
6aa8b732 | 39 | |
6aa8b732 | 40 | struct kvm_vcpu; |
c16f862d | 41 | extern struct kmem_cache *kvm_vcpu_cache; |
6aa8b732 | 42 | |
6aa8b732 AK |
43 | struct kvm_guest_debug { |
44 | int enabled; | |
45 | unsigned long bp[4]; | |
46 | int singlestep; | |
47 | }; | |
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; | |
57 | #define NR_IOBUS_DEVS 6 | |
58 | struct kvm_io_device *devs[NR_IOBUS_DEVS]; | |
59 | }; | |
60 | ||
61 | void kvm_io_bus_init(struct kvm_io_bus *bus); | |
62 | void kvm_io_bus_destroy(struct kvm_io_bus *bus); | |
63 | struct kvm_io_device *kvm_io_bus_find_dev(struct kvm_io_bus *bus, gpa_t addr); | |
64 | void kvm_io_bus_register_dev(struct kvm_io_bus *bus, | |
65 | struct kvm_io_device *dev); | |
66 | ||
d17fbbf7 ZX |
67 | struct kvm_vcpu { |
68 | struct kvm *kvm; | |
69 | struct preempt_notifier preempt_notifier; | |
70 | int vcpu_id; | |
71 | struct mutex mutex; | |
72 | int cpu; | |
73 | struct kvm_run *run; | |
74 | int guest_mode; | |
75 | unsigned long requests; | |
76 | struct kvm_guest_debug guest_debug; | |
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; |
8a7ae055 | 102 | unsigned long userspace_addr; |
80b14b5b | 103 | int user_alloc; |
6aa8b732 AK |
104 | }; |
105 | ||
ba1389b7 | 106 | struct kvm_vm_stat { |
4cee5764 AK |
107 | u32 mmu_shadow_zapped; |
108 | u32 mmu_pte_write; | |
109 | u32 mmu_pte_updated; | |
110 | u32 mmu_pde_zapped; | |
111 | u32 mmu_flooded; | |
112 | u32 mmu_recycled; | |
0f74a24c | 113 | u32 remote_tlb_flush; |
ba1389b7 AK |
114 | }; |
115 | ||
6aa8b732 | 116 | struct kvm { |
11ec2804 | 117 | struct mutex lock; /* protects everything except vcpus */ |
6d4e4c4f | 118 | struct mm_struct *mm; /* userspace tied to this vm */ |
6aa8b732 | 119 | int nmemslots; |
e0d62c7f IE |
120 | struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS + |
121 | KVM_PRIVATE_MEM_SLOTS]; | |
cea0f0e7 AK |
122 | /* |
123 | * Hash table of struct kvm_mmu_page. | |
124 | */ | |
6aa8b732 | 125 | struct list_head active_mmu_pages; |
82ce2c96 IE |
126 | unsigned int n_free_mmu_pages; |
127 | unsigned int n_requested_mmu_pages; | |
128 | unsigned int n_alloc_mmu_pages; | |
cea0f0e7 | 129 | struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES]; |
fb3f0f51 | 130 | struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; |
133de902 | 131 | struct list_head vm_list; |
bccf2150 | 132 | struct file *filp; |
2eeb2e94 | 133 | struct kvm_io_bus mmio_bus; |
74906345 | 134 | struct kvm_io_bus pio_bus; |
85f455f7 | 135 | struct kvm_pic *vpic; |
1fd4f2a5 | 136 | struct kvm_ioapic *vioapic; |
932f72ad | 137 | int round_robin_prev_vcpu; |
cbc94022 | 138 | unsigned int tss_addr; |
f78e0e2e | 139 | struct page *apic_access_page; |
ba1389b7 | 140 | struct kvm_vm_stat stat; |
d69fb81f | 141 | struct kvm_arch arch; |
6aa8b732 AK |
142 | }; |
143 | ||
f0242478 RR |
144 | /* The guest did something we don't support. */ |
145 | #define pr_unimpl(vcpu, fmt, ...) \ | |
146 | do { \ | |
147 | if (printk_ratelimit()) \ | |
148 | printk(KERN_ERR "kvm: %i: cpu%i " fmt, \ | |
149 | current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \ | |
d77c26fc | 150 | } while (0) |
f0242478 | 151 | |
6aa8b732 AK |
152 | #define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt) |
153 | #define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt) | |
154 | ||
fb3f0f51 RR |
155 | int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id); |
156 | void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); | |
157 | ||
313a3dc7 CO |
158 | void vcpu_load(struct kvm_vcpu *vcpu); |
159 | void vcpu_put(struct kvm_vcpu *vcpu); | |
160 | ||
e9b11c17 ZX |
161 | void decache_vcpus_on_cpu(int cpu); |
162 | ||
313a3dc7 | 163 | |
f8c16bba | 164 | int kvm_init(void *opaque, unsigned int vcpu_size, |
c16f862d | 165 | struct module *module); |
cb498ea2 | 166 | void kvm_exit(void); |
6aa8b732 | 167 | |
6aa8b732 AK |
168 | #define HPA_MSB ((sizeof(hpa_t) * 8) - 1) |
169 | #define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB) | |
170 | static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; } | |
039576c0 | 171 | struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva); |
6aa8b732 | 172 | |
cea7bb21 | 173 | extern struct page *bad_page; |
6aa8b732 | 174 | |
cea7bb21 | 175 | int is_error_page(struct page *page); |
f9d46eb0 | 176 | int kvm_is_error_hva(unsigned long addr); |
210c7c4d IE |
177 | int kvm_set_memory_region(struct kvm *kvm, |
178 | struct kvm_userspace_memory_region *mem, | |
179 | int user_alloc); | |
f78e0e2e SY |
180 | int __kvm_set_memory_region(struct kvm *kvm, |
181 | struct kvm_userspace_memory_region *mem, | |
182 | int user_alloc); | |
0de10343 ZX |
183 | int kvm_arch_set_memory_region(struct kvm *kvm, |
184 | struct kvm_userspace_memory_region *mem, | |
185 | struct kvm_memory_slot old, | |
186 | int user_alloc); | |
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); |
b4231d61 IE |
189 | void kvm_release_page_clean(struct page *page); |
190 | void kvm_release_page_dirty(struct page *page); | |
195aefde IE |
191 | int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, |
192 | int len); | |
193 | int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); | |
194 | int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, | |
195 | int offset, int len); | |
196 | int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, | |
197 | unsigned long len); | |
198 | int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); | |
199 | int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); | |
6aa8b732 | 200 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); |
e0d62c7f | 201 | int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); |
6aa8b732 AK |
202 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); |
203 | ||
8776e519 | 204 | void kvm_vcpu_block(struct kvm_vcpu *vcpu); |
6aa8b732 | 205 | void kvm_resched(struct kvm_vcpu *vcpu); |
7702fd1f AK |
206 | void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); |
207 | void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); | |
d9e368d6 | 208 | void kvm_flush_remote_tlbs(struct kvm *kvm); |
6aa8b732 | 209 | |
043405e1 CO |
210 | long kvm_arch_dev_ioctl(struct file *filp, |
211 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 CO |
212 | long kvm_arch_vcpu_ioctl(struct file *filp, |
213 | unsigned int ioctl, unsigned long arg); | |
214 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
215 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); | |
018d00d2 ZX |
216 | |
217 | int kvm_dev_ioctl_check_extension(long ext); | |
218 | ||
5bb064dc ZX |
219 | int kvm_get_dirty_log(struct kvm *kvm, |
220 | struct kvm_dirty_log *log, int *is_dirty); | |
221 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, | |
222 | struct kvm_dirty_log *log); | |
223 | ||
1fe779f8 CO |
224 | int kvm_vm_ioctl_set_memory_region(struct kvm *kvm, |
225 | struct | |
226 | kvm_userspace_memory_region *mem, | |
227 | int user_alloc); | |
228 | long kvm_arch_vm_ioctl(struct file *filp, | |
229 | unsigned int ioctl, unsigned long arg); | |
230 | void kvm_arch_destroy_vm(struct kvm *kvm); | |
313a3dc7 | 231 | |
d0752060 HB |
232 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); |
233 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); | |
234 | ||
8b006791 ZX |
235 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, |
236 | struct kvm_translation *tr); | |
237 | ||
b6c7a5dc HB |
238 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); |
239 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); | |
240 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
241 | struct kvm_sregs *sregs); | |
242 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
243 | struct kvm_sregs *sregs); | |
244 | int kvm_arch_vcpu_ioctl_debug_guest(struct kvm_vcpu *vcpu, | |
245 | struct kvm_debug_guest *dbg); | |
246 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); | |
247 | ||
f8c16bba ZX |
248 | int kvm_arch_init(void *opaque); |
249 | void kvm_arch_exit(void); | |
043405e1 | 250 | |
e9b11c17 ZX |
251 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); |
252 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu); | |
253 | ||
254 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu); | |
255 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
256 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); | |
257 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); | |
26e5215f | 258 | int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu); |
d40ccc62 | 259 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu); |
e9b11c17 ZX |
260 | |
261 | int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu); | |
262 | void kvm_arch_hardware_enable(void *garbage); | |
263 | void kvm_arch_hardware_disable(void *garbage); | |
264 | int kvm_arch_hardware_setup(void); | |
265 | void kvm_arch_hardware_unsetup(void); | |
266 | void kvm_arch_check_processor_compat(void *rtn); | |
1d737c8a | 267 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu); |
e9b11c17 | 268 | |
d19a9cd2 ZX |
269 | void kvm_free_physmem(struct kvm *kvm); |
270 | ||
271 | struct kvm *kvm_arch_create_vm(void); | |
272 | void kvm_arch_destroy_vm(struct kvm *kvm); | |
e9b11c17 | 273 | |
682c59a3 ZX |
274 | int kvm_cpu_get_interrupt(struct kvm_vcpu *v); |
275 | int kvm_cpu_has_interrupt(struct kvm_vcpu *v); | |
276 | ||
d172fcd3 LV |
277 | static inline void kvm_guest_enter(void) |
278 | { | |
e56a7a28 | 279 | account_system_vtime(current); |
d172fcd3 LV |
280 | current->flags |= PF_VCPU; |
281 | } | |
282 | ||
283 | static inline void kvm_guest_exit(void) | |
284 | { | |
e56a7a28 | 285 | account_system_vtime(current); |
d172fcd3 LV |
286 | current->flags &= ~PF_VCPU; |
287 | } | |
288 | ||
6aa8b732 AK |
289 | static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot) |
290 | { | |
291 | return slot - kvm->memslots; | |
292 | } | |
293 | ||
1755fbcc AK |
294 | static inline gpa_t gfn_to_gpa(gfn_t gfn) |
295 | { | |
296 | return (gpa_t)gfn << PAGE_SHIFT; | |
297 | } | |
6aa8b732 | 298 | |
ba1389b7 AK |
299 | enum kvm_stat_kind { |
300 | KVM_STAT_VM, | |
301 | KVM_STAT_VCPU, | |
302 | }; | |
303 | ||
417bc304 HB |
304 | struct kvm_stats_debugfs_item { |
305 | const char *name; | |
306 | int offset; | |
ba1389b7 | 307 | enum kvm_stat_kind kind; |
417bc304 HB |
308 | struct dentry *dentry; |
309 | }; | |
310 | extern struct kvm_stats_debugfs_item debugfs_entries[]; | |
311 | ||
6aa8b732 | 312 | #endif |