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>
27 #define KVM_MAX_VCPUS 4
28 #define KVM_MEMORY_SLOTS 8
29 /* memory slots that does not exposed to userspace */
30 #define KVM_PRIVATE_MEM_SLOTS 4
32 #define KVM_PIO_PAGE_OFFSET 1
35 * vcpu->requests bit members
37 #define KVM_REQ_TLB_FLUSH 0
41 extern struct kmem_cache
*kvm_vcpu_cache
;
43 struct kvm_guest_debug
{
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
57 #define NR_IOBUS_DEVS 6
58 struct kvm_io_device
*devs
[NR_IOBUS_DEVS
];
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
);
69 struct preempt_notifier preempt_notifier
;
75 unsigned long requests
;
76 struct kvm_guest_debug guest_debug
;
82 struct kvm_vcpu_stat stat
;
84 #ifdef CONFIG_HAS_IOMEM
86 int mmio_read_completed
;
89 unsigned char mmio_data
[8];
93 struct kvm_vcpu_arch arch
;
96 struct kvm_memory_slot
{
101 unsigned long *dirty_bitmap
;
102 unsigned long userspace_addr
;
107 u32 mmu_shadow_zapped
;
113 u32 remote_tlb_flush
;
117 struct mutex lock
; /* protects everything except vcpus */
118 struct mm_struct
*mm
; /* userspace tied to this vm */
120 struct kvm_memory_slot memslots
[KVM_MEMORY_SLOTS
+
121 KVM_PRIVATE_MEM_SLOTS
];
122 struct kvm_vcpu
*vcpus
[KVM_MAX_VCPUS
];
123 struct list_head vm_list
;
125 struct kvm_io_bus mmio_bus
;
126 struct kvm_io_bus pio_bus
;
127 struct kvm_pic
*vpic
;
128 struct kvm_ioapic
*vioapic
;
129 int round_robin_prev_vcpu
;
130 unsigned int tss_addr
;
131 struct page
*apic_access_page
;
132 struct kvm_vm_stat stat
;
133 struct kvm_arch arch
;
136 /* The guest did something we don't support. */
137 #define pr_unimpl(vcpu, fmt, ...) \
139 if (printk_ratelimit()) \
140 printk(KERN_ERR "kvm: %i: cpu%i " fmt, \
141 current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \
144 #define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
145 #define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
147 int kvm_vcpu_init(struct kvm_vcpu
*vcpu
, struct kvm
*kvm
, unsigned id
);
148 void kvm_vcpu_uninit(struct kvm_vcpu
*vcpu
);
150 void vcpu_load(struct kvm_vcpu
*vcpu
);
151 void vcpu_put(struct kvm_vcpu
*vcpu
);
153 void decache_vcpus_on_cpu(int cpu
);
156 int kvm_init(void *opaque
, unsigned int vcpu_size
,
157 struct module
*module
);
160 #define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
161 #define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
162 static inline int is_error_hpa(hpa_t hpa
) { return hpa
>> HPA_MSB
; }
163 struct page
*gva_to_page(struct kvm_vcpu
*vcpu
, gva_t gva
);
165 extern struct page
*bad_page
;
167 int is_error_page(struct page
*page
);
168 int kvm_is_error_hva(unsigned long addr
);
169 int kvm_set_memory_region(struct kvm
*kvm
,
170 struct kvm_userspace_memory_region
*mem
,
172 int __kvm_set_memory_region(struct kvm
*kvm
,
173 struct kvm_userspace_memory_region
*mem
,
175 int kvm_arch_set_memory_region(struct kvm
*kvm
,
176 struct kvm_userspace_memory_region
*mem
,
177 struct kvm_memory_slot old
,
179 gfn_t
unalias_gfn(struct kvm
*kvm
, gfn_t gfn
);
180 struct page
*gfn_to_page(struct kvm
*kvm
, gfn_t gfn
);
181 void kvm_release_page_clean(struct page
*page
);
182 void kvm_release_page_dirty(struct page
*page
);
183 int kvm_read_guest_page(struct kvm
*kvm
, gfn_t gfn
, void *data
, int offset
,
185 int kvm_read_guest(struct kvm
*kvm
, gpa_t gpa
, void *data
, unsigned long len
);
186 int kvm_write_guest_page(struct kvm
*kvm
, gfn_t gfn
, const void *data
,
187 int offset
, int len
);
188 int kvm_write_guest(struct kvm
*kvm
, gpa_t gpa
, const void *data
,
190 int kvm_clear_guest_page(struct kvm
*kvm
, gfn_t gfn
, int offset
, int len
);
191 int kvm_clear_guest(struct kvm
*kvm
, gpa_t gpa
, unsigned long len
);
192 struct kvm_memory_slot
*gfn_to_memslot(struct kvm
*kvm
, gfn_t gfn
);
193 int kvm_is_visible_gfn(struct kvm
*kvm
, gfn_t gfn
);
194 void mark_page_dirty(struct kvm
*kvm
, gfn_t gfn
);
196 void kvm_vcpu_block(struct kvm_vcpu
*vcpu
);
197 void kvm_resched(struct kvm_vcpu
*vcpu
);
198 void kvm_load_guest_fpu(struct kvm_vcpu
*vcpu
);
199 void kvm_put_guest_fpu(struct kvm_vcpu
*vcpu
);
200 void kvm_flush_remote_tlbs(struct kvm
*kvm
);
202 long kvm_arch_dev_ioctl(struct file
*filp
,
203 unsigned int ioctl
, unsigned long arg
);
204 long kvm_arch_vcpu_ioctl(struct file
*filp
,
205 unsigned int ioctl
, unsigned long arg
);
206 void kvm_arch_vcpu_load(struct kvm_vcpu
*vcpu
, int cpu
);
207 void kvm_arch_vcpu_put(struct kvm_vcpu
*vcpu
);
209 int kvm_dev_ioctl_check_extension(long ext
);
211 int kvm_get_dirty_log(struct kvm
*kvm
,
212 struct kvm_dirty_log
*log
, int *is_dirty
);
213 int kvm_vm_ioctl_get_dirty_log(struct kvm
*kvm
,
214 struct kvm_dirty_log
*log
);
216 int kvm_vm_ioctl_set_memory_region(struct kvm
*kvm
,
218 kvm_userspace_memory_region
*mem
,
220 long kvm_arch_vm_ioctl(struct file
*filp
,
221 unsigned int ioctl
, unsigned long arg
);
222 void kvm_arch_destroy_vm(struct kvm
*kvm
);
224 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu
*vcpu
, struct kvm_fpu
*fpu
);
225 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu
*vcpu
, struct kvm_fpu
*fpu
);
227 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu
*vcpu
,
228 struct kvm_translation
*tr
);
230 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu
*vcpu
, struct kvm_regs
*regs
);
231 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu
*vcpu
, struct kvm_regs
*regs
);
232 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu
*vcpu
,
233 struct kvm_sregs
*sregs
);
234 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu
*vcpu
,
235 struct kvm_sregs
*sregs
);
236 int kvm_arch_vcpu_ioctl_debug_guest(struct kvm_vcpu
*vcpu
,
237 struct kvm_debug_guest
*dbg
);
238 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu
*vcpu
, struct kvm_run
*kvm_run
);
240 int kvm_arch_init(void *opaque
);
241 void kvm_arch_exit(void);
243 int kvm_arch_vcpu_init(struct kvm_vcpu
*vcpu
);
244 void kvm_arch_vcpu_uninit(struct kvm_vcpu
*vcpu
);
246 void kvm_arch_vcpu_free(struct kvm_vcpu
*vcpu
);
247 void kvm_arch_vcpu_load(struct kvm_vcpu
*vcpu
, int cpu
);
248 void kvm_arch_vcpu_put(struct kvm_vcpu
*vcpu
);
249 struct kvm_vcpu
*kvm_arch_vcpu_create(struct kvm
*kvm
, unsigned int id
);
250 int kvm_arch_vcpu_setup(struct kvm_vcpu
*vcpu
);
251 void kvm_arch_vcpu_destroy(struct kvm_vcpu
*vcpu
);
253 int kvm_arch_vcpu_reset(struct kvm_vcpu
*vcpu
);
254 void kvm_arch_hardware_enable(void *garbage
);
255 void kvm_arch_hardware_disable(void *garbage
);
256 int kvm_arch_hardware_setup(void);
257 void kvm_arch_hardware_unsetup(void);
258 void kvm_arch_check_processor_compat(void *rtn
);
259 int kvm_arch_vcpu_runnable(struct kvm_vcpu
*vcpu
);
261 void kvm_free_physmem(struct kvm
*kvm
);
263 struct kvm
*kvm_arch_create_vm(void);
264 void kvm_arch_destroy_vm(struct kvm
*kvm
);
266 int kvm_cpu_get_interrupt(struct kvm_vcpu
*v
);
267 int kvm_cpu_has_interrupt(struct kvm_vcpu
*v
);
269 static inline void kvm_guest_enter(void)
271 account_system_vtime(current
);
272 current
->flags
|= PF_VCPU
;
275 static inline void kvm_guest_exit(void)
277 account_system_vtime(current
);
278 current
->flags
&= ~PF_VCPU
;
281 static inline int memslot_id(struct kvm
*kvm
, struct kvm_memory_slot
*slot
)
283 return slot
- kvm
->memslots
;
286 static inline gpa_t
gfn_to_gpa(gfn_t gfn
)
288 return (gpa_t
)gfn
<< PAGE_SHIFT
;
296 struct kvm_stats_debugfs_item
{
299 enum kvm_stat_kind kind
;
300 struct dentry
*dentry
;
302 extern struct kvm_stats_debugfs_item debugfs_entries
[];