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1 | #ifndef __LINUX_KVM_H |
2 | #define __LINUX_KVM_H | |
3 | ||
4 | /* | |
5 | * Userspace interface for /dev/kvm - kernel based virtual machine | |
6 | * | |
7 | * Note: this interface is considered experimental and may change without | |
8 | * notice. | |
9 | */ | |
10 | ||
11 | #include <asm/types.h> | |
12 | #include <linux/ioctl.h> | |
13 | ||
14 | /* | |
15 | * Architectural interrupt line count, and the size of the bitmap needed | |
16 | * to hold them. | |
17 | */ | |
18 | #define KVM_NR_INTERRUPTS 256 | |
19 | #define KVM_IRQ_BITMAP_SIZE_BYTES ((KVM_NR_INTERRUPTS + 7) / 8) | |
20 | #define KVM_IRQ_BITMAP_SIZE(type) (KVM_IRQ_BITMAP_SIZE_BYTES / sizeof(type)) | |
21 | ||
22 | ||
23 | /* for KVM_CREATE_MEMORY_REGION */ | |
24 | struct kvm_memory_region { | |
25 | __u32 slot; | |
26 | __u32 flags; | |
27 | __u64 guest_phys_addr; | |
28 | __u64 memory_size; /* bytes */ | |
29 | }; | |
30 | ||
31 | /* for kvm_memory_region::flags */ | |
32 | #define KVM_MEM_LOG_DIRTY_PAGES 1UL | |
33 | ||
34 | ||
35 | #define KVM_EXIT_TYPE_FAIL_ENTRY 1 | |
36 | #define KVM_EXIT_TYPE_VM_EXIT 2 | |
37 | ||
38 | enum kvm_exit_reason { | |
39 | KVM_EXIT_UNKNOWN = 0, | |
40 | KVM_EXIT_EXCEPTION = 1, | |
41 | KVM_EXIT_IO = 2, | |
42 | KVM_EXIT_CPUID = 3, | |
43 | KVM_EXIT_DEBUG = 4, | |
44 | KVM_EXIT_HLT = 5, | |
45 | KVM_EXIT_MMIO = 6, | |
46 | }; | |
47 | ||
48 | /* for KVM_RUN */ | |
49 | struct kvm_run { | |
50 | /* in */ | |
51 | __u32 vcpu; | |
52 | __u32 emulated; /* skip current instruction */ | |
53 | __u32 mmio_completed; /* mmio request completed */ | |
54 | ||
55 | /* out */ | |
56 | __u32 exit_type; | |
57 | __u32 exit_reason; | |
58 | __u32 instruction_length; | |
59 | union { | |
60 | /* KVM_EXIT_UNKNOWN */ | |
61 | struct { | |
62 | __u32 hardware_exit_reason; | |
63 | } hw; | |
64 | /* KVM_EXIT_EXCEPTION */ | |
65 | struct { | |
66 | __u32 exception; | |
67 | __u32 error_code; | |
68 | } ex; | |
69 | /* KVM_EXIT_IO */ | |
70 | struct { | |
71 | #define KVM_EXIT_IO_IN 0 | |
72 | #define KVM_EXIT_IO_OUT 1 | |
73 | __u8 direction; | |
74 | __u8 size; /* bytes */ | |
75 | __u8 string; | |
76 | __u8 string_down; | |
77 | __u8 rep; | |
78 | __u8 pad; | |
79 | __u16 port; | |
80 | __u64 count; | |
81 | union { | |
82 | __u64 address; | |
83 | __u32 value; | |
84 | }; | |
85 | } io; | |
86 | struct { | |
87 | } debug; | |
88 | /* KVM_EXIT_MMIO */ | |
89 | struct { | |
90 | __u64 phys_addr; | |
91 | __u8 data[8]; | |
92 | __u32 len; | |
93 | __u8 is_write; | |
94 | } mmio; | |
95 | }; | |
96 | }; | |
97 | ||
98 | /* for KVM_GET_REGS and KVM_SET_REGS */ | |
99 | struct kvm_regs { | |
100 | /* in */ | |
101 | __u32 vcpu; | |
102 | __u32 padding; | |
103 | ||
104 | /* out (KVM_GET_REGS) / in (KVM_SET_REGS) */ | |
105 | __u64 rax, rbx, rcx, rdx; | |
106 | __u64 rsi, rdi, rsp, rbp; | |
107 | __u64 r8, r9, r10, r11; | |
108 | __u64 r12, r13, r14, r15; | |
109 | __u64 rip, rflags; | |
110 | }; | |
111 | ||
112 | struct kvm_segment { | |
113 | __u64 base; | |
114 | __u32 limit; | |
115 | __u16 selector; | |
116 | __u8 type; | |
117 | __u8 present, dpl, db, s, l, g, avl; | |
118 | __u8 unusable; | |
119 | __u8 padding; | |
120 | }; | |
121 | ||
122 | struct kvm_dtable { | |
123 | __u64 base; | |
124 | __u16 limit; | |
125 | __u16 padding[3]; | |
126 | }; | |
127 | ||
128 | /* for KVM_GET_SREGS and KVM_SET_SREGS */ | |
129 | struct kvm_sregs { | |
130 | /* in */ | |
131 | __u32 vcpu; | |
132 | __u32 padding; | |
133 | ||
134 | /* out (KVM_GET_SREGS) / in (KVM_SET_SREGS) */ | |
135 | struct kvm_segment cs, ds, es, fs, gs, ss; | |
136 | struct kvm_segment tr, ldt; | |
137 | struct kvm_dtable gdt, idt; | |
138 | __u64 cr0, cr2, cr3, cr4, cr8; | |
139 | __u64 efer; | |
140 | __u64 apic_base; | |
141 | __u64 interrupt_bitmap[KVM_IRQ_BITMAP_SIZE(__u64)]; | |
142 | }; | |
143 | ||
144 | struct kvm_msr_entry { | |
145 | __u32 index; | |
146 | __u32 reserved; | |
147 | __u64 data; | |
148 | }; | |
149 | ||
150 | /* for KVM_GET_MSRS and KVM_SET_MSRS */ | |
151 | struct kvm_msrs { | |
152 | __u32 vcpu; | |
153 | __u32 nmsrs; /* number of msrs in entries */ | |
154 | ||
155 | struct kvm_msr_entry entries[0]; | |
156 | }; | |
157 | ||
158 | /* for KVM_GET_MSR_INDEX_LIST */ | |
159 | struct kvm_msr_list { | |
160 | __u32 nmsrs; /* number of msrs in entries */ | |
161 | __u32 indices[0]; | |
162 | }; | |
163 | ||
164 | /* for KVM_TRANSLATE */ | |
165 | struct kvm_translation { | |
166 | /* in */ | |
167 | __u64 linear_address; | |
168 | __u32 vcpu; | |
169 | __u32 padding; | |
170 | ||
171 | /* out */ | |
172 | __u64 physical_address; | |
173 | __u8 valid; | |
174 | __u8 writeable; | |
175 | __u8 usermode; | |
176 | }; | |
177 | ||
178 | /* for KVM_INTERRUPT */ | |
179 | struct kvm_interrupt { | |
180 | /* in */ | |
181 | __u32 vcpu; | |
182 | __u32 irq; | |
183 | }; | |
184 | ||
185 | struct kvm_breakpoint { | |
186 | __u32 enabled; | |
187 | __u32 padding; | |
188 | __u64 address; | |
189 | }; | |
190 | ||
191 | /* for KVM_DEBUG_GUEST */ | |
192 | struct kvm_debug_guest { | |
193 | /* int */ | |
194 | __u32 vcpu; | |
195 | __u32 enabled; | |
196 | struct kvm_breakpoint breakpoints[4]; | |
197 | __u32 singlestep; | |
198 | }; | |
199 | ||
200 | /* for KVM_GET_DIRTY_LOG */ | |
201 | struct kvm_dirty_log { | |
202 | __u32 slot; | |
203 | __u32 padding; | |
204 | union { | |
205 | void __user *dirty_bitmap; /* one bit per page */ | |
206 | __u64 padding; | |
207 | }; | |
208 | }; | |
209 | ||
210 | #define KVMIO 0xAE | |
211 | ||
212 | #define KVM_RUN _IOWR(KVMIO, 2, struct kvm_run) | |
213 | #define KVM_GET_REGS _IOWR(KVMIO, 3, struct kvm_regs) | |
214 | #define KVM_SET_REGS _IOW(KVMIO, 4, struct kvm_regs) | |
215 | #define KVM_GET_SREGS _IOWR(KVMIO, 5, struct kvm_sregs) | |
216 | #define KVM_SET_SREGS _IOW(KVMIO, 6, struct kvm_sregs) | |
217 | #define KVM_TRANSLATE _IOWR(KVMIO, 7, struct kvm_translation) | |
218 | #define KVM_INTERRUPT _IOW(KVMIO, 8, struct kvm_interrupt) | |
219 | #define KVM_DEBUG_GUEST _IOW(KVMIO, 9, struct kvm_debug_guest) | |
220 | #define KVM_SET_MEMORY_REGION _IOW(KVMIO, 10, struct kvm_memory_region) | |
221 | #define KVM_CREATE_VCPU _IOW(KVMIO, 11, int /* vcpu_slot */) | |
222 | #define KVM_GET_DIRTY_LOG _IOW(KVMIO, 12, struct kvm_dirty_log) | |
223 | #define KVM_GET_MSRS _IOWR(KVMIO, 13, struct kvm_msrs) | |
224 | #define KVM_SET_MSRS _IOWR(KVMIO, 14, struct kvm_msrs) | |
225 | #define KVM_GET_MSR_INDEX_LIST _IOWR(KVMIO, 15, struct kvm_msr_list) | |
226 | ||
227 | #endif |