5 * This work is licensed under the terms of the GNU GPL, version 2. See
6 * the COPYING file in the top-level directory.
9 #include <linux/types.h>
10 #include <linux/hardirq.h>
11 #include <linux/list.h>
12 #include <linux/mutex.h>
13 #include <linux/spinlock.h>
14 #include <linux/signal.h>
15 #include <linux/sched.h>
17 #include <linux/preempt.h>
18 #include <linux/marker.h>
19 #include <asm/signal.h>
21 #include <linux/kvm.h>
22 #include <linux/kvm_para.h>
24 #include <linux/kvm_types.h>
26 #include <asm/kvm_host.h>
29 * vcpu->requests bit members
31 #define KVM_REQ_TLB_FLUSH 0
32 #define KVM_REQ_MIGRATE_TIMER 1
33 #define KVM_REQ_REPORT_TPR_ACCESS 2
34 #define KVM_REQ_MMU_RELOAD 3
35 #define KVM_REQ_TRIPLE_FAULT 4
36 #define KVM_REQ_PENDING_TIMER 5
39 extern struct kmem_cache *kvm_vcpu_cache;
42 * It would be nice to use something smarter than a linear search, TBD...
43 * Thankfully we dont expect many devices to register (famous last words :),
44 * so until then it will suffice. At least its abstracted so we can change
49 #define NR_IOBUS_DEVS 6
50 struct kvm_io_device *devs[NR_IOBUS_DEVS];
53 void kvm_io_bus_init(struct kvm_io_bus *bus);
54 void kvm_io_bus_destroy(struct kvm_io_bus *bus);
55 struct kvm_io_device *kvm_io_bus_find_dev(struct kvm_io_bus *bus,
56 gpa_t addr, int len, int is_write);
57 void kvm_io_bus_register_dev(struct kvm_io_bus *bus,
58 struct kvm_io_device *dev);
62 #ifdef CONFIG_PREEMPT_NOTIFIERS
63 struct preempt_notifier preempt_notifier;
70 unsigned long requests;
71 struct kvm_guest_debug guest_debug;
77 struct kvm_vcpu_stat stat;
79 #ifdef CONFIG_HAS_IOMEM
81 int mmio_read_completed;
84 unsigned char mmio_data[8];
88 struct kvm_vcpu_arch arch;
91 struct kvm_memory_slot {
96 unsigned long *dirty_bitmap;
98 unsigned long rmap_pde;
101 unsigned long userspace_addr;
106 struct mutex lock; /* protects the vcpus array and APIC accesses */
108 struct rw_semaphore slots_lock;
109 struct mm_struct *mm; /* userspace tied to this vm */
111 struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS +
112 KVM_PRIVATE_MEM_SLOTS];
113 struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
114 struct list_head vm_list;
115 struct kvm_io_bus mmio_bus;
116 struct kvm_io_bus pio_bus;
117 struct kvm_vm_stat stat;
118 struct kvm_arch arch;
119 atomic_t users_count;
120 #ifdef KVM_COALESCED_MMIO_PAGE_OFFSET
121 struct kvm_coalesced_mmio_dev *coalesced_mmio_dev;
122 struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
126 /* The guest did something we don't support. */
127 #define pr_unimpl(vcpu, fmt, ...) \
129 if (printk_ratelimit()) \
130 printk(KERN_ERR "kvm: %i: cpu%i " fmt, \
131 current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \
134 #define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
135 #define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
137 int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id);
138 void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
140 void vcpu_load(struct kvm_vcpu *vcpu);
141 void vcpu_put(struct kvm_vcpu *vcpu);
143 int kvm_init(void *opaque, unsigned int vcpu_size,
144 struct module *module);
147 void kvm_get_kvm(struct kvm *kvm);
148 void kvm_put_kvm(struct kvm *kvm);
150 #define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
151 #define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
152 static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
153 struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva);
155 extern struct page *bad_page;
156 extern pfn_t bad_pfn;
158 int is_error_page(struct page *page);
159 int is_error_pfn(pfn_t pfn);
160 int kvm_is_error_hva(unsigned long addr);
161 int kvm_set_memory_region(struct kvm *kvm,
162 struct kvm_userspace_memory_region *mem,
164 int __kvm_set_memory_region(struct kvm *kvm,
165 struct kvm_userspace_memory_region *mem,
167 int kvm_arch_set_memory_region(struct kvm *kvm,
168 struct kvm_userspace_memory_region *mem,
169 struct kvm_memory_slot old,
171 void kvm_arch_flush_shadow(struct kvm *kvm);
172 gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn);
173 struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn);
174 unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn);
175 void kvm_release_page_clean(struct page *page);
176 void kvm_release_page_dirty(struct page *page);
177 void kvm_set_page_dirty(struct page *page);
178 void kvm_set_page_accessed(struct page *page);
180 pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn);
181 void kvm_release_pfn_dirty(pfn_t);
182 void kvm_release_pfn_clean(pfn_t pfn);
183 void kvm_set_pfn_dirty(pfn_t pfn);
184 void kvm_set_pfn_accessed(pfn_t pfn);
185 void kvm_get_pfn(pfn_t pfn);
187 int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset,
189 int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data,
191 int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len);
192 int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data,
193 int offset, int len);
194 int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data,
196 int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
197 int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
198 struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
199 int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
200 void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
202 void kvm_vcpu_block(struct kvm_vcpu *vcpu);
203 void kvm_resched(struct kvm_vcpu *vcpu);
204 void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
205 void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
206 void kvm_flush_remote_tlbs(struct kvm *kvm);
207 void kvm_reload_remote_mmus(struct kvm *kvm);
209 long kvm_arch_dev_ioctl(struct file *filp,
210 unsigned int ioctl, unsigned long arg);
211 long kvm_arch_vcpu_ioctl(struct file *filp,
212 unsigned int ioctl, unsigned long arg);
213 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
214 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
216 int kvm_dev_ioctl_check_extension(long ext);
218 int kvm_get_dirty_log(struct kvm *kvm,
219 struct kvm_dirty_log *log, int *is_dirty);
220 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
221 struct kvm_dirty_log *log);
223 int kvm_vm_ioctl_set_memory_region(struct kvm *kvm,
225 kvm_userspace_memory_region *mem,
227 long kvm_arch_vm_ioctl(struct file *filp,
228 unsigned int ioctl, unsigned long arg);
229 void kvm_arch_destroy_vm(struct kvm *kvm);
231 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
232 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
234 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
235 struct kvm_translation *tr);
237 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
238 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
239 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
240 struct kvm_sregs *sregs);
241 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
242 struct kvm_sregs *sregs);
243 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
244 struct kvm_mp_state *mp_state);
245 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
246 struct kvm_mp_state *mp_state);
247 int kvm_arch_vcpu_ioctl_debug_guest(struct kvm_vcpu *vcpu,
248 struct kvm_debug_guest *dbg);
249 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run);
251 int kvm_arch_init(void *opaque);
252 void kvm_arch_exit(void);
254 int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu);
255 void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu);
257 void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu);
258 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
259 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
260 struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id);
261 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu);
262 void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu);
264 int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu);
265 void kvm_arch_hardware_enable(void *garbage);
266 void kvm_arch_hardware_disable(void *garbage);
267 int kvm_arch_hardware_setup(void);
268 void kvm_arch_hardware_unsetup(void);
269 void kvm_arch_check_processor_compat(void *rtn);
270 int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu);
272 void kvm_free_physmem(struct kvm *kvm);
274 struct kvm *kvm_arch_create_vm(void);
275 void kvm_arch_destroy_vm(struct kvm *kvm);
277 int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
278 int kvm_cpu_has_interrupt(struct kvm_vcpu *v);
279 int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu);
280 void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
282 static inline void kvm_guest_enter(void)
284 account_system_vtime(current);
285 current->flags |= PF_VCPU;
288 static inline void kvm_guest_exit(void)
290 account_system_vtime(current);
291 current->flags &= ~PF_VCPU;
294 static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot)
296 return slot - kvm->memslots;
299 static inline gpa_t gfn_to_gpa(gfn_t gfn)
301 return (gpa_t)gfn << PAGE_SHIFT;
304 static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu)
306 set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests);
314 struct kvm_stats_debugfs_item {
317 enum kvm_stat_kind kind;
318 struct dentry *dentry;
320 extern struct kvm_stats_debugfs_item debugfs_entries[];
321 extern struct dentry *kvm_debugfs_dir;
323 #ifdef CONFIG_KVM_TRACE
324 int kvm_trace_ioctl(unsigned int ioctl, unsigned long arg);
325 void kvm_trace_cleanup(void);
328 int kvm_trace_ioctl(unsigned int ioctl, unsigned long arg)
332 #define kvm_trace_cleanup() ((void)0)