KVM: Bypass irq_pending get/set when using in kernel irqchip
[deliverable/linux.git] / include / linux / kvm.h
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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 *
dea8caee 7 * Note: you must update KVM_API_VERSION if you change this interface.
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8 */
9
10#include <asm/types.h>
11#include <linux/ioctl.h>
12
2ff81f70 13#define KVM_API_VERSION 12
0b76e20b 14
9eb829ce 15/* Architectural interrupt line count. */
6aa8b732 16#define KVM_NR_INTERRUPTS 256
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17
18/* for KVM_CREATE_MEMORY_REGION */
19struct kvm_memory_region {
20 __u32 slot;
21 __u32 flags;
22 __u64 guest_phys_addr;
23 __u64 memory_size; /* bytes */
24};
25
26/* for kvm_memory_region::flags */
27#define KVM_MEM_LOG_DIRTY_PAGES 1UL
28
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29struct kvm_memory_alias {
30 __u32 slot; /* this has a different namespace than memory slots */
31 __u32 flags;
32 __u64 guest_phys_addr;
33 __u64 memory_size;
34 __u64 target_phys_addr;
35};
6aa8b732 36
97222cc8 37/* for KVM_IRQ_LINE */
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38struct kvm_irq_level {
39 /*
40 * ACPI gsi notion of irq.
41 * For IA-64 (APIC model) IOAPIC0: irq 0-23; IOAPIC1: irq 24-47..
42 * For X86 (standard AT mode) PIC0/1: irq 0-15. IOAPIC0: 0-23..
43 */
44 __u32 irq;
45 __u32 level;
46};
47
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48/* for KVM_GET_IRQCHIP / KVM_SET_IRQCHIP */
49struct kvm_pic_state {
50 __u8 last_irr; /* edge detection */
51 __u8 irr; /* interrupt request register */
52 __u8 imr; /* interrupt mask register */
53 __u8 isr; /* interrupt service register */
54 __u8 priority_add; /* highest irq priority */
55 __u8 irq_base;
56 __u8 read_reg_select;
57 __u8 poll;
58 __u8 special_mask;
59 __u8 init_state;
60 __u8 auto_eoi;
61 __u8 rotate_on_auto_eoi;
62 __u8 special_fully_nested_mode;
63 __u8 init4; /* true if 4 byte init */
64 __u8 elcr; /* PIIX edge/trigger selection */
65 __u8 elcr_mask;
66};
67
68enum kvm_irqchip_id {
69 KVM_IRQCHIP_PIC_MASTER = 0,
70 KVM_IRQCHIP_PIC_SLAVE = 1,
71};
72
73struct kvm_irqchip {
74 __u32 chip_id;
75 __u32 pad;
76 union {
77 char dummy[512]; /* reserving space */
78 struct kvm_pic_state pic;
79 } chip;
80};
81
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82enum kvm_exit_reason {
83 KVM_EXIT_UNKNOWN = 0,
84 KVM_EXIT_EXCEPTION = 1,
85 KVM_EXIT_IO = 2,
b4e63f56 86 KVM_EXIT_HYPERCALL = 3,
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87 KVM_EXIT_DEBUG = 4,
88 KVM_EXIT_HLT = 5,
89 KVM_EXIT_MMIO = 6,
c1150d8c 90 KVM_EXIT_IRQ_WINDOW_OPEN = 7,
46fe4ddd 91 KVM_EXIT_SHUTDOWN = 8,
8eb7d334 92 KVM_EXIT_FAIL_ENTRY = 9,
1b19f3e6 93 KVM_EXIT_INTR = 10,
253abdee 94 KVM_EXIT_SET_TPR = 11
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95};
96
9a2bb7f4 97/* for KVM_RUN, returned by mmap(vcpu_fd, offset=0) */
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98struct kvm_run {
99 /* in */
c1150d8c 100 __u8 request_interrupt_window;
02c83209 101 __u8 padding1[7];
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102
103 /* out */
6aa8b732 104 __u32 exit_reason;
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105 __u8 ready_for_interrupt_injection;
106 __u8 if_flag;
2ff81f70 107 __u8 padding2[2];
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108
109 /* in (pre_kvm_run), out (post_kvm_run) */
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110 __u64 cr8;
111 __u64 apic_base;
112
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113 union {
114 /* KVM_EXIT_UNKNOWN */
115 struct {
8eb7d334 116 __u64 hardware_exit_reason;
6aa8b732 117 } hw;
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118 /* KVM_EXIT_FAIL_ENTRY */
119 struct {
120 __u64 hardware_entry_failure_reason;
121 } fail_entry;
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122 /* KVM_EXIT_EXCEPTION */
123 struct {
124 __u32 exception;
125 __u32 error_code;
126 } ex;
127 /* KVM_EXIT_IO */
46fc1477 128 struct kvm_io {
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129#define KVM_EXIT_IO_IN 0
130#define KVM_EXIT_IO_OUT 1
131 __u8 direction;
132 __u8 size; /* bytes */
6aa8b732 133 __u16 port;
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134 __u32 count;
135 __u64 data_offset; /* relative to kvm_run start */
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136 } io;
137 struct {
138 } debug;
139 /* KVM_EXIT_MMIO */
140 struct {
141 __u64 phys_addr;
142 __u8 data[8];
143 __u32 len;
144 __u8 is_write;
145 } mmio;
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146 /* KVM_EXIT_HYPERCALL */
147 struct {
519ef353 148 __u64 nr;
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149 __u64 args[6];
150 __u64 ret;
151 __u32 longmode;
152 __u32 pad;
153 } hypercall;
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154 /* Fix the size of the union. */
155 char padding[256];
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156 };
157};
158
159/* for KVM_GET_REGS and KVM_SET_REGS */
160struct kvm_regs {
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161 /* out (KVM_GET_REGS) / in (KVM_SET_REGS) */
162 __u64 rax, rbx, rcx, rdx;
163 __u64 rsi, rdi, rsp, rbp;
164 __u64 r8, r9, r10, r11;
165 __u64 r12, r13, r14, r15;
166 __u64 rip, rflags;
167};
168
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169/* for KVM_GET_FPU and KVM_SET_FPU */
170struct kvm_fpu {
171 __u8 fpr[8][16];
172 __u16 fcw;
173 __u16 fsw;
174 __u8 ftwx; /* in fxsave format */
175 __u8 pad1;
176 __u16 last_opcode;
177 __u64 last_ip;
178 __u64 last_dp;
179 __u8 xmm[16][16];
180 __u32 mxcsr;
181 __u32 pad2;
182};
183
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184struct kvm_segment {
185 __u64 base;
186 __u32 limit;
187 __u16 selector;
188 __u8 type;
189 __u8 present, dpl, db, s, l, g, avl;
190 __u8 unusable;
191 __u8 padding;
192};
193
194struct kvm_dtable {
195 __u64 base;
196 __u16 limit;
197 __u16 padding[3];
198};
199
200/* for KVM_GET_SREGS and KVM_SET_SREGS */
201struct kvm_sregs {
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202 /* out (KVM_GET_SREGS) / in (KVM_SET_SREGS) */
203 struct kvm_segment cs, ds, es, fs, gs, ss;
204 struct kvm_segment tr, ldt;
205 struct kvm_dtable gdt, idt;
206 __u64 cr0, cr2, cr3, cr4, cr8;
207 __u64 efer;
208 __u64 apic_base;
9eb829ce 209 __u64 interrupt_bitmap[(KVM_NR_INTERRUPTS + 63) / 64];
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210};
211
212struct kvm_msr_entry {
213 __u32 index;
214 __u32 reserved;
215 __u64 data;
216};
217
218/* for KVM_GET_MSRS and KVM_SET_MSRS */
219struct kvm_msrs {
6aa8b732 220 __u32 nmsrs; /* number of msrs in entries */
bccf2150 221 __u32 pad;
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222
223 struct kvm_msr_entry entries[0];
224};
225
226/* for KVM_GET_MSR_INDEX_LIST */
227struct kvm_msr_list {
228 __u32 nmsrs; /* number of msrs in entries */
229 __u32 indices[0];
230};
231
232/* for KVM_TRANSLATE */
233struct kvm_translation {
234 /* in */
235 __u64 linear_address;
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236
237 /* out */
238 __u64 physical_address;
239 __u8 valid;
240 __u8 writeable;
241 __u8 usermode;
8cd13307 242 __u8 pad[5];
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243};
244
245/* for KVM_INTERRUPT */
246struct kvm_interrupt {
247 /* in */
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248 __u32 irq;
249};
250
251struct kvm_breakpoint {
252 __u32 enabled;
253 __u32 padding;
254 __u64 address;
255};
256
257/* for KVM_DEBUG_GUEST */
258struct kvm_debug_guest {
259 /* int */
6aa8b732 260 __u32 enabled;
bccf2150 261 __u32 pad;
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262 struct kvm_breakpoint breakpoints[4];
263 __u32 singlestep;
264};
265
266/* for KVM_GET_DIRTY_LOG */
267struct kvm_dirty_log {
268 __u32 slot;
269 __u32 padding;
270 union {
271 void __user *dirty_bitmap; /* one bit per page */
272 __u64 padding;
273 };
274};
275
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276struct kvm_cpuid_entry {
277 __u32 function;
278 __u32 eax;
279 __u32 ebx;
280 __u32 ecx;
281 __u32 edx;
282 __u32 padding;
283};
284
285/* for KVM_SET_CPUID */
286struct kvm_cpuid {
287 __u32 nent;
288 __u32 padding;
289 struct kvm_cpuid_entry entries[0];
290};
291
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292/* for KVM_SET_SIGNAL_MASK */
293struct kvm_signal_mask {
294 __u32 len;
295 __u8 sigset[0];
296};
297
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298#define KVMIO 0xAE
299
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300/*
301 * ioctls for /dev/kvm fds:
302 */
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303#define KVM_GET_API_VERSION _IO(KVMIO, 0x00)
304#define KVM_CREATE_VM _IO(KVMIO, 0x01) /* returns a VM fd */
305#define KVM_GET_MSR_INDEX_LIST _IOWR(KVMIO, 0x02, struct kvm_msr_list)
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306/*
307 * Check if a kvm extension is available. Argument is extension number,
308 * return is 1 (yes) or 0 (no, sorry).
309 */
310#define KVM_CHECK_EXTENSION _IO(KVMIO, 0x03)
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311/*
312 * Get size for mmap(vcpu_fd)
313 */
314#define KVM_GET_VCPU_MMAP_SIZE _IO(KVMIO, 0x04) /* in bytes */
f17abe9a 315
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316/*
317 * Extension capability list.
318 */
319#define KVM_CAP_IRQCHIP 0
b6958ce4 320#define KVM_CAP_HLT 1
85f455f7 321
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322/*
323 * ioctls for VM fds
324 */
739872c5 325#define KVM_SET_MEMORY_REGION _IOW(KVMIO, 0x40, struct kvm_memory_region)
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326/*
327 * KVM_CREATE_VCPU receives as a parameter the vcpu slot, and returns
328 * a vcpu fd.
329 */
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330#define KVM_CREATE_VCPU _IO(KVMIO, 0x41)
331#define KVM_GET_DIRTY_LOG _IOW(KVMIO, 0x42, struct kvm_dirty_log)
e8207547 332#define KVM_SET_MEMORY_ALIAS _IOW(KVMIO, 0x43, struct kvm_memory_alias)
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333/* Device model IOC */
334#define KVM_CREATE_IRQCHIP _IO(KVMIO, 0x60)
97222cc8 335#define KVM_IRQ_LINE _IOW(KVMIO, 0x61, struct kvm_irq_level)
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336#define KVM_GET_IRQCHIP _IOWR(KVMIO, 0x62, struct kvm_irqchip)
337#define KVM_SET_IRQCHIP _IOR(KVMIO, 0x63, struct kvm_irqchip)
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338
339/*
340 * ioctls for vcpu fds
341 */
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342#define KVM_RUN _IO(KVMIO, 0x80)
343#define KVM_GET_REGS _IOR(KVMIO, 0x81, struct kvm_regs)
344#define KVM_SET_REGS _IOW(KVMIO, 0x82, struct kvm_regs)
345#define KVM_GET_SREGS _IOR(KVMIO, 0x83, struct kvm_sregs)
346#define KVM_SET_SREGS _IOW(KVMIO, 0x84, struct kvm_sregs)
347#define KVM_TRANSLATE _IOWR(KVMIO, 0x85, struct kvm_translation)
348#define KVM_INTERRUPT _IOW(KVMIO, 0x86, struct kvm_interrupt)
349#define KVM_DEBUG_GUEST _IOW(KVMIO, 0x87, struct kvm_debug_guest)
350#define KVM_GET_MSRS _IOWR(KVMIO, 0x88, struct kvm_msrs)
351#define KVM_SET_MSRS _IOW(KVMIO, 0x89, struct kvm_msrs)
352#define KVM_SET_CPUID _IOW(KVMIO, 0x8a, struct kvm_cpuid)
1961d276 353#define KVM_SET_SIGNAL_MASK _IOW(KVMIO, 0x8b, struct kvm_signal_mask)
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354#define KVM_GET_FPU _IOR(KVMIO, 0x8c, struct kvm_fpu)
355#define KVM_SET_FPU _IOW(KVMIO, 0x8d, struct kvm_fpu)
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356
357#endif
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