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;
122 /* The guest did something we don't support. */
123 #define pr_unimpl(vcpu, fmt, ...) \
125 if (printk_ratelimit()) \
126 printk(KERN_ERR "kvm: %i: cpu%i " fmt, \
127 current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \
130 #define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
131 #define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
133 int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id);
134 void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
136 void vcpu_load(struct kvm_vcpu *vcpu);
137 void vcpu_put(struct kvm_vcpu *vcpu);
139 int kvm_init(void *opaque, unsigned int vcpu_size,
140 struct module *module);
143 void kvm_get_kvm(struct kvm *kvm);
144 void kvm_put_kvm(struct kvm *kvm);
146 #define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
147 #define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
148 static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
149 struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva);
151 extern struct page *bad_page;
152 extern pfn_t bad_pfn;
154 int is_error_page(struct page *page);
155 int is_error_pfn(pfn_t pfn);
156 int kvm_is_error_hva(unsigned long addr);
157 int kvm_set_memory_region(struct kvm *kvm,
158 struct kvm_userspace_memory_region *mem,
160 int __kvm_set_memory_region(struct kvm *kvm,
161 struct kvm_userspace_memory_region *mem,
163 int kvm_arch_set_memory_region(struct kvm *kvm,
164 struct kvm_userspace_memory_region *mem,
165 struct kvm_memory_slot old,
167 gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn);
168 struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn);
169 unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn);
170 void kvm_release_page_clean(struct page *page);
171 void kvm_release_page_dirty(struct page *page);
172 void kvm_set_page_dirty(struct page *page);
173 void kvm_set_page_accessed(struct page *page);
175 pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn);
176 void kvm_release_pfn_dirty(pfn_t);
177 void kvm_release_pfn_clean(pfn_t pfn);
178 void kvm_set_pfn_dirty(pfn_t pfn);
179 void kvm_set_pfn_accessed(pfn_t pfn);
180 void kvm_get_pfn(pfn_t pfn);
182 int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset,
184 int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data,
186 int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len);
187 int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data,
188 int offset, int len);
189 int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data,
191 int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
192 int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
193 struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
194 int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
195 void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
197 void kvm_vcpu_block(struct kvm_vcpu *vcpu);
198 void kvm_resched(struct kvm_vcpu *vcpu);
199 void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
200 void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
201 void kvm_flush_remote_tlbs(struct kvm *kvm);
202 void kvm_reload_remote_mmus(struct kvm *kvm);
204 long kvm_arch_dev_ioctl(struct file *filp,
205 unsigned int ioctl, unsigned long arg);
206 long kvm_arch_vcpu_ioctl(struct file *filp,
207 unsigned int ioctl, unsigned long arg);
208 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
209 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
211 int kvm_dev_ioctl_check_extension(long ext);
213 int kvm_get_dirty_log(struct kvm *kvm,
214 struct kvm_dirty_log *log, int *is_dirty);
215 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
216 struct kvm_dirty_log *log);
218 int kvm_vm_ioctl_set_memory_region(struct kvm *kvm,
220 kvm_userspace_memory_region *mem,
222 long kvm_arch_vm_ioctl(struct file *filp,
223 unsigned int ioctl, unsigned long arg);
224 void kvm_arch_destroy_vm(struct kvm *kvm);
226 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
227 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
229 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
230 struct kvm_translation *tr);
232 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
233 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
234 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
235 struct kvm_sregs *sregs);
236 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
237 struct kvm_sregs *sregs);
238 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
239 struct kvm_mp_state *mp_state);
240 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
241 struct kvm_mp_state *mp_state);
242 int kvm_arch_vcpu_ioctl_debug_guest(struct kvm_vcpu *vcpu,
243 struct kvm_debug_guest *dbg);
244 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run);
246 int kvm_arch_init(void *opaque);
247 void kvm_arch_exit(void);
249 int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu);
250 void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu);
252 void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu);
253 void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
254 void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
255 struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id);
256 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu);
257 void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu);
259 int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu);
260 void kvm_arch_hardware_enable(void *garbage);
261 void kvm_arch_hardware_disable(void *garbage);
262 int kvm_arch_hardware_setup(void);
263 void kvm_arch_hardware_unsetup(void);
264 void kvm_arch_check_processor_compat(void *rtn);
265 int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu);
267 void kvm_free_physmem(struct kvm *kvm);
269 struct kvm *kvm_arch_create_vm(void);
270 void kvm_arch_destroy_vm(struct kvm *kvm);
272 int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
273 int kvm_cpu_has_interrupt(struct kvm_vcpu *v);
274 int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu);
275 void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
277 static inline void kvm_guest_enter(void)
279 account_system_vtime(current);
280 current->flags |= PF_VCPU;
283 static inline void kvm_guest_exit(void)
285 account_system_vtime(current);
286 current->flags &= ~PF_VCPU;
289 static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot)
291 return slot - kvm->memslots;
294 static inline gpa_t gfn_to_gpa(gfn_t gfn)
296 return (gpa_t)gfn << PAGE_SHIFT;
299 static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu)
301 set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests);
309 struct kvm_stats_debugfs_item {
312 enum kvm_stat_kind kind;
313 struct dentry *dentry;
315 extern struct kvm_stats_debugfs_item debugfs_entries[];
316 extern struct dentry *kvm_debugfs_dir;
318 #ifdef CONFIG_KVM_TRACE
319 int kvm_trace_ioctl(unsigned int ioctl, unsigned long arg);
320 void kvm_trace_cleanup(void);
323 int kvm_trace_ioctl(unsigned int ioctl, unsigned long arg)
327 #define kvm_trace_cleanup() ((void)0)