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, gpa_t addr);
56 void kvm_io_bus_register_dev(struct kvm_io_bus *bus,
57 struct kvm_io_device *dev);
61 #ifdef CONFIG_PREEMPT_NOTIFIERS
62 struct preempt_notifier preempt_notifier;
69 unsigned long requests;
70 struct kvm_guest_debug guest_debug;
76 struct kvm_vcpu_stat stat;
78 #ifdef CONFIG_HAS_IOMEM
80 int mmio_read_completed;
83 unsigned char mmio_data[8];
87 struct kvm_vcpu_arch arch;
90 struct kvm_memory_slot {
95 unsigned long *dirty_bitmap;
97 unsigned long rmap_pde;
100 unsigned long userspace_addr;
105 struct mutex lock; /* protects the vcpus array and APIC accesses */
107 struct rw_semaphore slots_lock;
108 struct mm_struct *mm; /* userspace tied to this vm */
110 struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS +
111 KVM_PRIVATE_MEM_SLOTS];
112 struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
113 struct list_head vm_list;
114 struct kvm_io_bus mmio_bus;
115 struct kvm_io_bus pio_bus;
116 struct kvm_vm_stat stat;
117 struct kvm_arch arch;
118 atomic_t users_count;
121 /* The guest did something we don't support. */
122 #define pr_unimpl(vcpu, fmt, ...) \
124 if (printk_ratelimit()) \
125 printk(KERN_ERR "kvm: %i: cpu%i " fmt, \
126 current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \
129 #define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
130 #define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
132 int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id);
133 void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
135 void vcpu_load(struct kvm_vcpu *vcpu);
136 void vcpu_put(struct kvm_vcpu *vcpu);
138 void decache_vcpus_on_cpu(int cpu);
141 int kvm_init(void *opaque, unsigned int vcpu_size,
142 struct module *module);
145 void kvm_get_kvm(struct kvm *kvm);
146 void kvm_put_kvm(struct kvm *kvm);
148 #define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
149 #define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
150 static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
151 struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva);
153 extern struct page *bad_page;
154 extern pfn_t bad_pfn;
156 int is_error_page(struct page *page);
157 int is_error_pfn(pfn_t pfn);
158 int kvm_is_error_hva(unsigned long addr);
159 int kvm_set_memory_region(struct kvm *kvm,
160 struct kvm_userspace_memory_region *mem,
162 int __kvm_set_memory_region(struct kvm *kvm,
163 struct kvm_userspace_memory_region *mem,
165 int kvm_arch_set_memory_region(struct kvm *kvm,
166 struct kvm_userspace_memory_region *mem,
167 struct kvm_memory_slot old,
169 gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn);
170 struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn);
171 unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn);
172 void kvm_release_page_clean(struct page *page);
173 void kvm_release_page_dirty(struct page *page);
174 void kvm_set_page_dirty(struct page *page);
175 void kvm_set_page_accessed(struct page *page);
177 pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn);
178 void kvm_release_pfn_dirty(pfn_t);
179 void kvm_release_pfn_clean(pfn_t pfn);
180 void kvm_set_pfn_dirty(pfn_t pfn);
181 void kvm_set_pfn_accessed(pfn_t pfn);
182 void kvm_get_pfn(pfn_t pfn);
184 int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset,
186 int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data,
188 int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len);
189 int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data,
190 int offset, int len);
191 int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data,
193 int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
194 int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
195 struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
196 int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
197 void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
199 void kvm_vcpu_block(struct kvm_vcpu *vcpu);
200 void kvm_resched(struct kvm_vcpu *vcpu);
201 void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
202 void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
203 void kvm_flush_remote_tlbs(struct kvm *kvm);
204 void kvm_reload_remote_mmus(struct kvm *kvm);
206 long kvm_arch_dev_ioctl(struct file *filp,
207 unsigned int ioctl, unsigned long arg);
208 long kvm_arch_vcpu_ioctl(struct file *filp,
209 unsigned int ioctl, unsigned long arg);
210 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
211 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
213 int kvm_dev_ioctl_check_extension(long ext);
215 int kvm_get_dirty_log(struct kvm *kvm,
216 struct kvm_dirty_log *log, int *is_dirty);
217 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
218 struct kvm_dirty_log *log);
220 int kvm_vm_ioctl_set_memory_region(struct kvm *kvm,
222 kvm_userspace_memory_region *mem,
224 long kvm_arch_vm_ioctl(struct file *filp,
225 unsigned int ioctl, unsigned long arg);
226 void kvm_arch_destroy_vm(struct kvm *kvm);
228 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
229 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
231 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
232 struct kvm_translation *tr);
234 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
235 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
236 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
237 struct kvm_sregs *sregs);
238 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
239 struct kvm_sregs *sregs);
240 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
241 struct kvm_mp_state *mp_state);
242 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
243 struct kvm_mp_state *mp_state);
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);
248 int kvm_arch_init(void *opaque);
249 void kvm_arch_exit(void);
251 int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu);
252 void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu);
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);
258 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu);
259 void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu);
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);
267 int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu);
269 void kvm_free_physmem(struct kvm *kvm);
271 struct kvm *kvm_arch_create_vm(void);
272 void kvm_arch_destroy_vm(struct kvm *kvm);
274 int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
275 int kvm_cpu_has_interrupt(struct kvm_vcpu *v);
276 int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu);
277 void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
279 static inline void kvm_guest_enter(void)
281 account_system_vtime(current);
282 current->flags |= PF_VCPU;
285 static inline void kvm_guest_exit(void)
287 account_system_vtime(current);
288 current->flags &= ~PF_VCPU;
291 static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot)
293 return slot - kvm->memslots;
296 static inline gpa_t gfn_to_gpa(gfn_t gfn)
298 return (gpa_t)gfn << PAGE_SHIFT;
301 static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu)
303 set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests);
311 struct kvm_stats_debugfs_item {
314 enum kvm_stat_kind kind;
315 struct dentry *dentry;
317 extern struct kvm_stats_debugfs_item debugfs_entries[];
318 extern struct dentry *kvm_debugfs_dir;
320 #ifdef CONFIG_KVM_TRACE
321 int kvm_trace_ioctl(unsigned int ioctl, unsigned long arg);
322 void kvm_trace_cleanup(void);
325 int kvm_trace_ioctl(unsigned int ioctl, unsigned long arg)
329 #define kvm_trace_cleanup() ((void)0)