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 <asm/signal.h>
20 #include <linux/kvm.h>
21 #include <linux/kvm_para.h>
23 #include <linux/kvm_types.h>
25 #include <asm/kvm_host.h>
28 * vcpu->requests bit members
30 #define KVM_REQ_TLB_FLUSH 0
31 #define KVM_REQ_MIGRATE_TIMER 1
32 #define KVM_REQ_REPORT_TPR_ACCESS 2
33 #define KVM_REQ_MMU_RELOAD 3
34 #define KVM_REQ_TRIPLE_FAULT 4
37 extern struct kmem_cache *kvm_vcpu_cache;
40 * It would be nice to use something smarter than a linear search, TBD...
41 * Thankfully we dont expect many devices to register (famous last words :),
42 * so until then it will suffice. At least its abstracted so we can change
47 #define NR_IOBUS_DEVS 6
48 struct kvm_io_device *devs[NR_IOBUS_DEVS];
51 void kvm_io_bus_init(struct kvm_io_bus *bus);
52 void kvm_io_bus_destroy(struct kvm_io_bus *bus);
53 struct kvm_io_device *kvm_io_bus_find_dev(struct kvm_io_bus *bus, gpa_t addr);
54 void kvm_io_bus_register_dev(struct kvm_io_bus *bus,
55 struct kvm_io_device *dev);
59 #ifdef CONFIG_PREEMPT_NOTIFIERS
60 struct preempt_notifier preempt_notifier;
67 unsigned long requests;
68 struct kvm_guest_debug guest_debug;
74 struct kvm_vcpu_stat stat;
76 #ifdef CONFIG_HAS_IOMEM
78 int mmio_read_completed;
81 unsigned char mmio_data[8];
85 struct kvm_vcpu_arch arch;
88 struct kvm_memory_slot {
93 unsigned long *dirty_bitmap;
95 unsigned long rmap_pde;
98 unsigned long userspace_addr;
103 struct mutex lock; /* protects the vcpus array and APIC accesses */
105 struct rw_semaphore slots_lock;
106 struct mm_struct *mm; /* userspace tied to this vm */
108 struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS +
109 KVM_PRIVATE_MEM_SLOTS];
110 struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
111 struct list_head vm_list;
113 struct kvm_io_bus mmio_bus;
114 struct kvm_io_bus pio_bus;
115 struct kvm_vm_stat stat;
116 struct kvm_arch arch;
117 atomic_t users_count;
120 /* The guest did something we don't support. */
121 #define pr_unimpl(vcpu, fmt, ...) \
123 if (printk_ratelimit()) \
124 printk(KERN_ERR "kvm: %i: cpu%i " fmt, \
125 current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \
128 #define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
129 #define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
131 int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id);
132 void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
134 void vcpu_load(struct kvm_vcpu *vcpu);
135 void vcpu_put(struct kvm_vcpu *vcpu);
137 void decache_vcpus_on_cpu(int cpu);
140 int kvm_init(void *opaque, unsigned int vcpu_size,
141 struct module *module);
144 void kvm_get_kvm(struct kvm *kvm);
145 void kvm_put_kvm(struct kvm *kvm);
147 #define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
148 #define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
149 static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
150 struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva);
152 extern struct page *bad_page;
153 extern pfn_t bad_pfn;
155 int is_error_page(struct page *page);
156 int is_error_pfn(pfn_t pfn);
157 int kvm_is_error_hva(unsigned long addr);
158 int kvm_set_memory_region(struct kvm *kvm,
159 struct kvm_userspace_memory_region *mem,
161 int __kvm_set_memory_region(struct kvm *kvm,
162 struct kvm_userspace_memory_region *mem,
164 int kvm_arch_set_memory_region(struct kvm *kvm,
165 struct kvm_userspace_memory_region *mem,
166 struct kvm_memory_slot old,
168 gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn);
169 struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn);
170 unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn);
171 void kvm_release_page_clean(struct page *page);
172 void kvm_release_page_dirty(struct page *page);
173 void kvm_set_page_dirty(struct page *page);
174 void kvm_set_page_accessed(struct page *page);
176 pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn);
177 void kvm_release_pfn_dirty(pfn_t);
178 void kvm_release_pfn_clean(pfn_t pfn);
179 void kvm_set_pfn_dirty(pfn_t pfn);
180 void kvm_set_pfn_accessed(pfn_t pfn);
181 void kvm_get_pfn(pfn_t pfn);
183 int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset,
185 int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data,
187 int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len);
188 int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data,
189 int offset, int len);
190 int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data,
192 int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
193 int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
194 struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
195 int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
196 void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
198 void kvm_vcpu_block(struct kvm_vcpu *vcpu);
199 void kvm_resched(struct kvm_vcpu *vcpu);
200 void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
201 void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
202 void kvm_flush_remote_tlbs(struct kvm *kvm);
203 void kvm_reload_remote_mmus(struct kvm *kvm);
205 long kvm_arch_dev_ioctl(struct file *filp,
206 unsigned int ioctl, unsigned long arg);
207 long kvm_arch_vcpu_ioctl(struct file *filp,
208 unsigned int ioctl, unsigned long arg);
209 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
210 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
212 int kvm_dev_ioctl_check_extension(long ext);
214 int kvm_get_dirty_log(struct kvm *kvm,
215 struct kvm_dirty_log *log, int *is_dirty);
216 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
217 struct kvm_dirty_log *log);
219 int kvm_vm_ioctl_set_memory_region(struct kvm *kvm,
221 kvm_userspace_memory_region *mem,
223 long kvm_arch_vm_ioctl(struct file *filp,
224 unsigned int ioctl, unsigned long arg);
225 void kvm_arch_destroy_vm(struct kvm *kvm);
227 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
228 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
230 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
231 struct kvm_translation *tr);
233 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
234 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
235 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
236 struct kvm_sregs *sregs);
237 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
238 struct kvm_sregs *sregs);
239 int kvm_arch_vcpu_ioctl_debug_guest(struct kvm_vcpu *vcpu,
240 struct kvm_debug_guest *dbg);
241 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run);
243 int kvm_arch_init(void *opaque);
244 void kvm_arch_exit(void);
246 int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu);
247 void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu);
249 void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu);
250 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
251 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
252 struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id);
253 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu);
254 void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu);
256 int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu);
257 void kvm_arch_hardware_enable(void *garbage);
258 void kvm_arch_hardware_disable(void *garbage);
259 int kvm_arch_hardware_setup(void);
260 void kvm_arch_hardware_unsetup(void);
261 void kvm_arch_check_processor_compat(void *rtn);
262 int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu);
264 void kvm_free_physmem(struct kvm *kvm);
266 struct kvm *kvm_arch_create_vm(void);
267 void kvm_arch_destroy_vm(struct kvm *kvm);
269 int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
270 int kvm_cpu_has_interrupt(struct kvm_vcpu *v);
271 void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
273 static inline void kvm_guest_enter(void)
275 account_system_vtime(current);
276 current->flags |= PF_VCPU;
279 static inline void kvm_guest_exit(void)
281 account_system_vtime(current);
282 current->flags &= ~PF_VCPU;
285 static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot)
287 return slot - kvm->memslots;
290 static inline gpa_t gfn_to_gpa(gfn_t gfn)
292 return (gpa_t)gfn << PAGE_SHIFT;
295 static inline void kvm_migrate_apic_timer(struct kvm_vcpu *vcpu)
297 set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests);
305 struct kvm_stats_debugfs_item {
308 enum kvm_stat_kind kind;
309 struct dentry *dentry;
311 extern struct kvm_stats_debugfs_item debugfs_entries[];