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-rw-r--r--include/linux/kvm_host.h299
1 files changed, 299 insertions, 0 deletions
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
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1#ifndef __KVM_HOST_H
2#define __KVM_HOST_H
3
4/*
5 * This work is licensed under the terms of the GNU GPL, version 2. See
6 * the COPYING file in the top-level directory.
7 */
8
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>
16#include <linux/mm.h>
17#include <linux/preempt.h>
18#include <asm/signal.h>
19
20#include <linux/kvm.h>
21#include <linux/kvm_para.h>
22
23#include <linux/kvm_types.h>
24
25#include <asm/kvm_host.h>
26
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
31
32#define KVM_PIO_PAGE_OFFSET 1
33
34/*
35 * vcpu->requests bit members
36 */
37#define KVM_REQ_TLB_FLUSH 0
38#define KVM_REQ_MIGRATE_TIMER 1
39#define KVM_REQ_REPORT_TPR_ACCESS 2
40
41struct kvm_vcpu;
42extern struct kmem_cache *kvm_vcpu_cache;
43
44struct kvm_guest_debug {
45 int enabled;
46 unsigned long bp[4];
47 int singlestep;
48};
49
50/*
51 * It would be nice to use something smarter than a linear search, TBD...
52 * Thankfully we dont expect many devices to register (famous last words :),
53 * so until then it will suffice. At least its abstracted so we can change
54 * in one place.
55 */
56struct kvm_io_bus {
57 int dev_count;
58#define NR_IOBUS_DEVS 6
59 struct kvm_io_device *devs[NR_IOBUS_DEVS];
60};
61
62void kvm_io_bus_init(struct kvm_io_bus *bus);
63void kvm_io_bus_destroy(struct kvm_io_bus *bus);
64struct kvm_io_device *kvm_io_bus_find_dev(struct kvm_io_bus *bus, gpa_t addr);
65void kvm_io_bus_register_dev(struct kvm_io_bus *bus,
66 struct kvm_io_device *dev);
67
68struct kvm_vcpu {
69 struct kvm *kvm;
70 struct preempt_notifier preempt_notifier;
71 int vcpu_id;
72 struct mutex mutex;
73 int cpu;
74 struct kvm_run *run;
75 int guest_mode;
76 unsigned long requests;
77 struct kvm_guest_debug guest_debug;
78 int fpu_active;
79 int guest_fpu_loaded;
80 wait_queue_head_t wq;
81 int sigset_active;
82 sigset_t sigset;
83 struct kvm_vcpu_stat stat;
84
85#ifdef CONFIG_HAS_IOMEM
86 int mmio_needed;
87 int mmio_read_completed;
88 int mmio_is_write;
89 int mmio_size;
90 unsigned char mmio_data[8];
91 gpa_t mmio_phys_addr;
92#endif
93
94 struct kvm_vcpu_arch arch;
95};
96
97struct kvm_memory_slot {
98 gfn_t base_gfn;
99 unsigned long npages;
100 unsigned long flags;
101 unsigned long *rmap;
102 unsigned long *dirty_bitmap;
103 unsigned long userspace_addr;
104 int user_alloc;
105};
106
107struct kvm {
108 struct mutex lock; /* protects the vcpus array and APIC accesses */
109 spinlock_t mmu_lock;
110 struct mm_struct *mm; /* userspace tied to this vm */
111 int nmemslots;
112 struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS +
113 KVM_PRIVATE_MEM_SLOTS];
114 struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
115 struct list_head vm_list;
116 struct file *filp;
117 struct kvm_io_bus mmio_bus;
118 struct kvm_io_bus pio_bus;
119 struct kvm_vm_stat stat;
120 struct kvm_arch arch;
121};
122
123/* The guest did something we don't support. */
124#define pr_unimpl(vcpu, fmt, ...) \
125 do { \
126 if (printk_ratelimit()) \
127 printk(KERN_ERR "kvm: %i: cpu%i " fmt, \
128 current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \
129 } while (0)
130
131#define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
132#define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
133
134int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id);
135void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
136
137void vcpu_load(struct kvm_vcpu *vcpu);
138void vcpu_put(struct kvm_vcpu *vcpu);
139
140void decache_vcpus_on_cpu(int cpu);
141
142
143int kvm_init(void *opaque, unsigned int vcpu_size,
144 struct module *module);
145void kvm_exit(void);
146
147#define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
148#define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
149static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
150struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva);
151
152extern struct page *bad_page;
153
154int is_error_page(struct page *page);
155int kvm_is_error_hva(unsigned long addr);
156int kvm_set_memory_region(struct kvm *kvm,
157 struct kvm_userspace_memory_region *mem,
158 int user_alloc);
159int __kvm_set_memory_region(struct kvm *kvm,
160 struct kvm_userspace_memory_region *mem,
161 int user_alloc);
162int kvm_arch_set_memory_region(struct kvm *kvm,
163 struct kvm_userspace_memory_region *mem,
164 struct kvm_memory_slot old,
165 int user_alloc);
166gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn);
167struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn);
168void kvm_release_page_clean(struct page *page);
169void kvm_release_page_dirty(struct page *page);
170int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset,
171 int len);
172int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data,
173 unsigned long len);
174int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len);
175int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data,
176 int offset, int len);
177int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data,
178 unsigned long len);
179int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
180int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
181struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
182int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
183void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
184
185void kvm_vcpu_block(struct kvm_vcpu *vcpu);
186void kvm_resched(struct kvm_vcpu *vcpu);
187void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
188void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
189void kvm_flush_remote_tlbs(struct kvm *kvm);
190
191long kvm_arch_dev_ioctl(struct file *filp,
192 unsigned int ioctl, unsigned long arg);
193long kvm_arch_vcpu_ioctl(struct file *filp,
194 unsigned int ioctl, unsigned long arg);
195void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
196void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
197
198int kvm_dev_ioctl_check_extension(long ext);
199
200int kvm_get_dirty_log(struct kvm *kvm,
201 struct kvm_dirty_log *log, int *is_dirty);
202int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
203 struct kvm_dirty_log *log);
204
205int kvm_vm_ioctl_set_memory_region(struct kvm *kvm,
206 struct
207 kvm_userspace_memory_region *mem,
208 int user_alloc);
209long kvm_arch_vm_ioctl(struct file *filp,
210 unsigned int ioctl, unsigned long arg);
211void kvm_arch_destroy_vm(struct kvm *kvm);
212
213int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
214int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
215
216int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
217 struct kvm_translation *tr);
218
219int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
220int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
221int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
222 struct kvm_sregs *sregs);
223int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
224 struct kvm_sregs *sregs);
225int kvm_arch_vcpu_ioctl_debug_guest(struct kvm_vcpu *vcpu,
226 struct kvm_debug_guest *dbg);
227int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run);
228
229int kvm_arch_init(void *opaque);
230void kvm_arch_exit(void);
231
232int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu);
233void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu);
234
235void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu);
236void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
237void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
238struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id);
239int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu);
240void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu);
241
242int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu);
243void kvm_arch_hardware_enable(void *garbage);
244void kvm_arch_hardware_disable(void *garbage);
245int kvm_arch_hardware_setup(void);
246void kvm_arch_hardware_unsetup(void);
247void kvm_arch_check_processor_compat(void *rtn);
248int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu);
249
250void kvm_free_physmem(struct kvm *kvm);
251
252struct kvm *kvm_arch_create_vm(void);
253void kvm_arch_destroy_vm(struct kvm *kvm);
254
255int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
256int kvm_cpu_has_interrupt(struct kvm_vcpu *v);
257void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
258
259static inline void kvm_guest_enter(void)
260{
261 account_system_vtime(current);
262 current->flags |= PF_VCPU;
263}
264
265static inline void kvm_guest_exit(void)
266{
267 account_system_vtime(current);
268 current->flags &= ~PF_VCPU;
269}
270
271static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot)
272{
273 return slot - kvm->memslots;
274}
275
276static inline gpa_t gfn_to_gpa(gfn_t gfn)
277{
278 return (gpa_t)gfn << PAGE_SHIFT;
279}
280
281static inline void kvm_migrate_apic_timer(struct kvm_vcpu *vcpu)
282{
283 set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests);
284}
285
286enum kvm_stat_kind {
287 KVM_STAT_VM,
288 KVM_STAT_VCPU,
289};
290
291struct kvm_stats_debugfs_item {
292 const char *name;
293 int offset;
294 enum kvm_stat_kind kind;
295 struct dentry *dentry;
296};
297extern struct kvm_stats_debugfs_item debugfs_entries[];
298
299#endif
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-26 13:12:07 -0500