Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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: you must update KVM_API_VERSION if you change this interface.
8 */
9
10#include <asm/types.h>
11#include <linux/compiler.h>
12#include <linux/ioctl.h>
13#include <asm/kvm.h>
14
15#define KVM_API_VERSION 12
16
17/* for KVM_TRACE_ENABLE */
18struct kvm_user_trace_setup {
19 __u32 buf_size; /* sub_buffer size of each per-cpu */
20 __u32 buf_nr; /* the number of sub_buffers of each per-cpu */
21};
22
23/* for KVM_CREATE_MEMORY_REGION */
24struct kvm_memory_region {
25 __u32 slot;
26 __u32 flags;
27 __u64 guest_phys_addr;
28 __u64 memory_size; /* bytes */
29};
30
31/* for KVM_SET_USER_MEMORY_REGION */
32struct kvm_userspace_memory_region {
33 __u32 slot;
34 __u32 flags;
35 __u64 guest_phys_addr;
36 __u64 memory_size; /* bytes */
37 __u64 userspace_addr; /* start of the userspace allocated memory */
38};
39
40/* for kvm_memory_region::flags */
41#define KVM_MEM_LOG_DIRTY_PAGES 1UL
42
43
44/* for KVM_IRQ_LINE */
45struct kvm_irq_level {
46 /*
47 * ACPI gsi notion of irq.
48 * For IA-64 (APIC model) IOAPIC0: irq 0-23; IOAPIC1: irq 24-47..
49 * For X86 (standard AT mode) PIC0/1: irq 0-15. IOAPIC0: 0-23..
50 */
51 __u32 irq;
52 __u32 level;
53};
54
55
56struct kvm_irqchip {
57 __u32 chip_id;
58 __u32 pad;
59 union {
60 char dummy[512]; /* reserving space */
61#ifdef CONFIG_X86
62 struct kvm_pic_state pic;
63#endif
64#if defined(CONFIG_X86) || defined(CONFIG_IA64)
65 struct kvm_ioapic_state ioapic;
66#endif
67 } chip;
68};
69
70#define KVM_EXIT_UNKNOWN 0
71#define KVM_EXIT_EXCEPTION 1
72#define KVM_EXIT_IO 2
73#define KVM_EXIT_HYPERCALL 3
74#define KVM_EXIT_DEBUG 4
75#define KVM_EXIT_HLT 5
76#define KVM_EXIT_MMIO 6
77#define KVM_EXIT_IRQ_WINDOW_OPEN 7
78#define KVM_EXIT_SHUTDOWN 8
79#define KVM_EXIT_FAIL_ENTRY 9
80#define KVM_EXIT_INTR 10
81#define KVM_EXIT_SET_TPR 11
82#define KVM_EXIT_TPR_ACCESS 12
83#define KVM_EXIT_S390_SIEIC 13
84#define KVM_EXIT_S390_RESET 14
85#define KVM_EXIT_DCR 15
86
87/* for KVM_RUN, returned by mmap(vcpu_fd, offset=0) */
88struct kvm_run {
89 /* in */
90 __u8 request_interrupt_window;
91 __u8 padding1[7];
92
93 /* out */
94 __u32 exit_reason;
95 __u8 ready_for_interrupt_injection;
96 __u8 if_flag;
97 __u8 padding2[2];
98
99 /* in (pre_kvm_run), out (post_kvm_run) */
100 __u64 cr8;
101 __u64 apic_base;
102
103 union {
104 /* KVM_EXIT_UNKNOWN */
105 struct {
106 __u64 hardware_exit_reason;
107 } hw;
108 /* KVM_EXIT_FAIL_ENTRY */
109 struct {
110 __u64 hardware_entry_failure_reason;
111 } fail_entry;
112 /* KVM_EXIT_EXCEPTION */
113 struct {
114 __u32 exception;
115 __u32 error_code;
116 } ex;
117 /* KVM_EXIT_IO */
118 struct kvm_io {
119#define KVM_EXIT_IO_IN 0
120#define KVM_EXIT_IO_OUT 1
121 __u8 direction;
122 __u8 size; /* bytes */
123 __u16 port;
124 __u32 count;
125 __u64 data_offset; /* relative to kvm_run start */
126 } io;
127 struct {
128 } debug;
129 /* KVM_EXIT_MMIO */
130 struct {
131 __u64 phys_addr;
132 __u8 data[8];
133 __u32 len;
134 __u8 is_write;
135 } mmio;
136 /* KVM_EXIT_HYPERCALL */
137 struct {
138 __u64 nr;
139 __u64 args[6];
140 __u64 ret;
141 __u32 longmode;
142 __u32 pad;
143 } hypercall;
144 /* KVM_EXIT_TPR_ACCESS */
145 struct {
146 __u64 rip;
147 __u32 is_write;
148 __u32 pad;
149 } tpr_access;
150 /* KVM_EXIT_S390_SIEIC */
151 struct {
152 __u8 icptcode;
153 __u64 mask; /* psw upper half */
154 __u64 addr; /* psw lower half */
155 __u16 ipa;
156 __u32 ipb;
157 } s390_sieic;
158 /* KVM_EXIT_S390_RESET */
159#define KVM_S390_RESET_POR 1
160#define KVM_S390_RESET_CLEAR 2
161#define KVM_S390_RESET_SUBSYSTEM 4
162#define KVM_S390_RESET_CPU_INIT 8
163#define KVM_S390_RESET_IPL 16
164 __u64 s390_reset_flags;
165 /* KVM_EXIT_DCR */
166 struct {
167 __u32 dcrn;
168 __u32 data;
169 __u8 is_write;
170 } dcr;
171 /* Fix the size of the union. */
172 char padding[256];
173 };
174};
175
176/* for KVM_TRANSLATE */
177struct kvm_translation {
178 /* in */
179 __u64 linear_address;
180
181 /* out */
182 __u64 physical_address;
183 __u8 valid;
184 __u8 writeable;
185 __u8 usermode;
186 __u8 pad[5];
187};
188
189/* for KVM_INTERRUPT */
190struct kvm_interrupt {
191 /* in */
192 __u32 irq;
193};
194
195struct kvm_breakpoint {
196 __u32 enabled;
197 __u32 padding;
198 __u64 address;
199};
200
201/* for KVM_DEBUG_GUEST */
202struct kvm_debug_guest {
203 /* int */
204 __u32 enabled;
205 __u32 pad;
206 struct kvm_breakpoint breakpoints[4];
207 __u32 singlestep;
208};
209
210/* for KVM_GET_DIRTY_LOG */
211struct kvm_dirty_log {
212 __u32 slot;
213 __u32 padding;
214 union {
215 void __user *dirty_bitmap; /* one bit per page */
216 __u64 padding;
217 };
218};
219
220/* for KVM_SET_SIGNAL_MASK */
221struct kvm_signal_mask {
222 __u32 len;
223 __u8 sigset[0];
224};
225
226/* for KVM_TPR_ACCESS_REPORTING */
227struct kvm_tpr_access_ctl {
228 __u32 enabled;
229 __u32 flags;
230 __u32 reserved[8];
231};
232
233/* for KVM_SET_VAPIC_ADDR */
234struct kvm_vapic_addr {
235 __u64 vapic_addr;
236};
237
238/* for KVM_SET_MPSTATE */
239
240#define KVM_MP_STATE_RUNNABLE 0
241#define KVM_MP_STATE_UNINITIALIZED 1
242#define KVM_MP_STATE_INIT_RECEIVED 2
243#define KVM_MP_STATE_HALTED 3
244#define KVM_MP_STATE_SIPI_RECEIVED 4
245
246struct kvm_mp_state {
247 __u32 mp_state;
248};
249
250struct kvm_s390_psw {
251 __u64 mask;
252 __u64 addr;
253};
254
255/* valid values for type in kvm_s390_interrupt */
256#define KVM_S390_SIGP_STOP 0xfffe0000u
257#define KVM_S390_PROGRAM_INT 0xfffe0001u
258#define KVM_S390_SIGP_SET_PREFIX 0xfffe0002u
259#define KVM_S390_RESTART 0xfffe0003u
260#define KVM_S390_INT_VIRTIO 0xffff2603u
261#define KVM_S390_INT_SERVICE 0xffff2401u
262#define KVM_S390_INT_EMERGENCY 0xffff1201u
263
264struct kvm_s390_interrupt {
265 __u32 type;
266 __u32 parm;
267 __u64 parm64;
268};
269
270#define KVM_TRC_SHIFT 16
271/*
272 * kvm trace categories
273 */
274#define KVM_TRC_ENTRYEXIT (1 << KVM_TRC_SHIFT)
275#define KVM_TRC_HANDLER (1 << (KVM_TRC_SHIFT + 1)) /* only 12 bits */
276
277/*
278 * kvm trace action
279 */
280#define KVM_TRC_VMENTRY (KVM_TRC_ENTRYEXIT + 0x01)
281#define KVM_TRC_VMEXIT (KVM_TRC_ENTRYEXIT + 0x02)
282#define KVM_TRC_PAGE_FAULT (KVM_TRC_HANDLER + 0x01)
283
284#define KVM_TRC_HEAD_SIZE 12
285#define KVM_TRC_CYCLE_SIZE 8
286#define KVM_TRC_EXTRA_MAX 7
287
288/* This structure represents a single trace buffer record. */
289struct kvm_trace_rec {
290 __u32 event:28;
291 __u32 extra_u32:3;
292 __u32 cycle_in:1;
293 __u32 pid;
294 __u32 vcpu_id;
295 union {
296 struct {
297 __u32 cycle_lo, cycle_hi;
298 __u32 extra_u32[KVM_TRC_EXTRA_MAX];
299 } cycle;
300 struct {
301 __u32 extra_u32[KVM_TRC_EXTRA_MAX];
302 } nocycle;
303 } u;
304};
305
306#define KVMIO 0xAE
307
308/*
309 * ioctls for /dev/kvm fds:
310 */
311#define KVM_GET_API_VERSION _IO(KVMIO, 0x00)
312#define KVM_CREATE_VM _IO(KVMIO, 0x01) /* returns a VM fd */
313#define KVM_GET_MSR_INDEX_LIST _IOWR(KVMIO, 0x02, struct kvm_msr_list)
314
315#define KVM_S390_ENABLE_SIE _IO(KVMIO, 0x06)
316/*
317 * Check if a kvm extension is available. Argument is extension number,
318 * return is 1 (yes) or 0 (no, sorry).
319 */
320#define KVM_CHECK_EXTENSION _IO(KVMIO, 0x03)
321/*
322 * Get size for mmap(vcpu_fd)
323 */
324#define KVM_GET_VCPU_MMAP_SIZE _IO(KVMIO, 0x04) /* in bytes */
325#define KVM_GET_SUPPORTED_CPUID _IOWR(KVMIO, 0x05, struct kvm_cpuid2)
326/*
327 * ioctls for kvm trace
328 */
329#define KVM_TRACE_ENABLE _IOW(KVMIO, 0x06, struct kvm_user_trace_setup)
330#define KVM_TRACE_PAUSE _IO(KVMIO, 0x07)
331#define KVM_TRACE_DISABLE _IO(KVMIO, 0x08)
332/*
333 * Extension capability list.
334 */
335#define KVM_CAP_IRQCHIP 0
336#define KVM_CAP_HLT 1
337#define KVM_CAP_MMU_SHADOW_CACHE_CONTROL 2
338#define KVM_CAP_USER_MEMORY 3
339#define KVM_CAP_SET_TSS_ADDR 4
340#define KVM_CAP_VAPIC 6
341#define KVM_CAP_EXT_CPUID 7
342#define KVM_CAP_CLOCKSOURCE 8
343#define KVM_CAP_NR_VCPUS 9 /* returns max vcpus per vm */
344#define KVM_CAP_NR_MEMSLOTS 10 /* returns max memory slots per vm */
345#define KVM_CAP_PIT 11
346#define KVM_CAP_NOP_IO_DELAY 12
347#define KVM_CAP_PV_MMU 13
348#define KVM_CAP_MP_STATE 14
349
350/*
351 * ioctls for VM fds
352 */
353#define KVM_SET_MEMORY_REGION _IOW(KVMIO, 0x40, struct kvm_memory_region)
354#define KVM_SET_NR_MMU_PAGES _IO(KVMIO, 0x44)
355#define KVM_GET_NR_MMU_PAGES _IO(KVMIO, 0x45)
356#define KVM_SET_USER_MEMORY_REGION _IOW(KVMIO, 0x46,\
357 struct kvm_userspace_memory_region)
358#define KVM_SET_TSS_ADDR _IO(KVMIO, 0x47)
359/*
360 * KVM_CREATE_VCPU receives as a parameter the vcpu slot, and returns
361 * a vcpu fd.
362 */
363#define KVM_CREATE_VCPU _IO(KVMIO, 0x41)
364#define KVM_GET_DIRTY_LOG _IOW(KVMIO, 0x42, struct kvm_dirty_log)
365#define KVM_SET_MEMORY_ALIAS _IOW(KVMIO, 0x43, struct kvm_memory_alias)
366/* Device model IOC */
367#define KVM_CREATE_IRQCHIP _IO(KVMIO, 0x60)
368#define KVM_IRQ_LINE _IOW(KVMIO, 0x61, struct kvm_irq_level)
369#define KVM_GET_IRQCHIP _IOWR(KVMIO, 0x62, struct kvm_irqchip)
370#define KVM_SET_IRQCHIP _IOR(KVMIO, 0x63, struct kvm_irqchip)
371#define KVM_CREATE_PIT _IO(KVMIO, 0x64)
372#define KVM_GET_PIT _IOWR(KVMIO, 0x65, struct kvm_pit_state)
373#define KVM_SET_PIT _IOR(KVMIO, 0x66, struct kvm_pit_state)
374
375/*
376 * ioctls for vcpu fds
377 */
378#define KVM_RUN _IO(KVMIO, 0x80)
379#define KVM_GET_REGS _IOR(KVMIO, 0x81, struct kvm_regs)
380#define KVM_SET_REGS _IOW(KVMIO, 0x82, struct kvm_regs)
381#define KVM_GET_SREGS _IOR(KVMIO, 0x83, struct kvm_sregs)
382#define KVM_SET_SREGS _IOW(KVMIO, 0x84, struct kvm_sregs)
383#define KVM_TRANSLATE _IOWR(KVMIO, 0x85, struct kvm_translation)
384#define KVM_INTERRUPT _IOW(KVMIO, 0x86, struct kvm_interrupt)
385#define KVM_DEBUG_GUEST _IOW(KVMIO, 0x87, struct kvm_debug_guest)
386#define KVM_GET_MSRS _IOWR(KVMIO, 0x88, struct kvm_msrs)
387#define KVM_SET_MSRS _IOW(KVMIO, 0x89, struct kvm_msrs)
388#define KVM_SET_CPUID _IOW(KVMIO, 0x8a, struct kvm_cpuid)
389#define KVM_SET_SIGNAL_MASK _IOW(KVMIO, 0x8b, struct kvm_signal_mask)
390#define KVM_GET_FPU _IOR(KVMIO, 0x8c, struct kvm_fpu)
391#define KVM_SET_FPU _IOW(KVMIO, 0x8d, struct kvm_fpu)
392#define KVM_GET_LAPIC _IOR(KVMIO, 0x8e, struct kvm_lapic_state)
393#define KVM_SET_LAPIC _IOW(KVMIO, 0x8f, struct kvm_lapic_state)
394#define KVM_SET_CPUID2 _IOW(KVMIO, 0x90, struct kvm_cpuid2)
395#define KVM_GET_CPUID2 _IOWR(KVMIO, 0x91, struct kvm_cpuid2)
396/* Available with KVM_CAP_VAPIC */
397#define KVM_TPR_ACCESS_REPORTING _IOWR(KVMIO, 0x92, struct kvm_tpr_access_ctl)
398/* Available with KVM_CAP_VAPIC */
399#define KVM_SET_VAPIC_ADDR _IOW(KVMIO, 0x93, struct kvm_vapic_addr)
400/* valid for virtual machine (for floating interrupt)_and_ vcpu */
401#define KVM_S390_INTERRUPT _IOW(KVMIO, 0x94, struct kvm_s390_interrupt)
402/* store status for s390 */
403#define KVM_S390_STORE_STATUS_NOADDR (-1ul)
404#define KVM_S390_STORE_STATUS_PREFIXED (-2ul)
405#define KVM_S390_STORE_STATUS _IOW(KVMIO, 0x95, unsigned long)
406/* initial ipl psw for s390 */
407#define KVM_S390_SET_INITIAL_PSW _IOW(KVMIO, 0x96, struct kvm_s390_psw)
408/* initial reset for s390 */
409#define KVM_S390_INITIAL_RESET _IO(KVMIO, 0x97)
410#define KVM_GET_MP_STATE _IOR(KVMIO, 0x98, struct kvm_mp_state)
411#define KVM_SET_MP_STATE _IOW(KVMIO, 0x99, struct kvm_mp_state)
412
413#endif