include/linux/kvm.h

   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_CREATE_MEMORY_REGION */
  18 struct kvm_memory_region {
  19         __u32 slot;
  20         __u32 flags;
  21         __u64 guest_phys_addr;
  22         __u64 memory_size; /* bytes */
  23 };
  24
  25 /* for KVM_SET_USER_MEMORY_REGION */
  26 struct kvm_userspace_memory_region {
  27         __u32 slot;
  28         __u32 flags;
  29         __u64 guest_phys_addr;
  30         __u64 memory_size; /* bytes */
  31         __u64 userspace_addr; /* start of the userspace allocated memory */
  32 };
  33
  34 /* for kvm_memory_region::flags */
  35 #define KVM_MEM_LOG_DIRTY_PAGES  1UL
  36
  37
  38 /* for KVM_IRQ_LINE */
  39 struct kvm_irq_level {
  40         /*
  41          * ACPI gsi notion of irq.
  42          * For IA-64 (APIC model) IOAPIC0: irq 0-23; IOAPIC1: irq 24-47..
  43          * For X86 (standard AT mode) PIC0/1: irq 0-15. IOAPIC0: 0-23..
  44          */
  45         __u32 irq;
  46         __u32 level;
  47 };
  48
  49
  50 struct kvm_irqchip {
  51         __u32 chip_id;
  52         __u32 pad;
  53         union {
  54                 char dummy[512];  /* reserving space */
  55 #ifdef CONFIG_X86
  56                 struct kvm_pic_state pic;
  57 #endif
  58 #if defined(CONFIG_X86) || defined(CONFIG_IA64)
  59                 struct kvm_ioapic_state ioapic;
  60 #endif
  61         } chip;
  62 };
  63
  64 #define KVM_EXIT_UNKNOWN          0
  65 #define KVM_EXIT_EXCEPTION        1
  66 #define KVM_EXIT_IO               2
  67 #define KVM_EXIT_HYPERCALL        3
  68 #define KVM_EXIT_DEBUG            4
  69 #define KVM_EXIT_HLT              5
  70 #define KVM_EXIT_MMIO             6
  71 #define KVM_EXIT_IRQ_WINDOW_OPEN  7
  72 #define KVM_EXIT_SHUTDOWN         8
  73 #define KVM_EXIT_FAIL_ENTRY       9
  74 #define KVM_EXIT_INTR             10
  75 #define KVM_EXIT_SET_TPR          11
  76 #define KVM_EXIT_TPR_ACCESS       12
  77
  78 /* for KVM_RUN, returned by mmap(vcpu_fd, offset=0) */
  79 struct kvm_run {
  80         /* in */
  81         __u8 request_interrupt_window;
  82         __u8 padding1[7];
  83
  84         /* out */
  85         __u32 exit_reason;
  86         __u8 ready_for_interrupt_injection;
  87         __u8 if_flag;
  88         __u8 padding2[2];
  89
  90         /* in (pre_kvm_run), out (post_kvm_run) */
  91         __u64 cr8;
  92         __u64 apic_base;
  93
  94         union {
  95                 /* KVM_EXIT_UNKNOWN */
  96                 struct {
  97                         __u64 hardware_exit_reason;
  98                 } hw;
  99                 /* KVM_EXIT_FAIL_ENTRY */
 100                 struct {
 101                         __u64 hardware_entry_failure_reason;
 102                 } fail_entry;
 103                 /* KVM_EXIT_EXCEPTION */
 104                 struct {
 105                         __u32 exception;
 106                         __u32 error_code;
 107                 } ex;
 108                 /* KVM_EXIT_IO */
 109                 struct kvm_io {
 110 #define KVM_EXIT_IO_IN  0
 111 #define KVM_EXIT_IO_OUT 1
 112                         __u8 direction;
 113                         __u8 size; /* bytes */
 114                         __u16 port;
 115                         __u32 count;
 116                         __u64 data_offset; /* relative to kvm_run start */
 117                 } io;
 118                 struct {
 119                 } debug;
 120                 /* KVM_EXIT_MMIO */
 121                 struct {
 122                         __u64 phys_addr;
 123                         __u8  data[8];
 124                         __u32 len;
 125                         __u8  is_write;
 126                 } mmio;
 127                 /* KVM_EXIT_HYPERCALL */
 128                 struct {
 129                         __u64 nr;
 130                         __u64 args[6];
 131                         __u64 ret;
 132                         __u32 longmode;
 133                         __u32 pad;
 134                 } hypercall;
 135                 /* KVM_EXIT_TPR_ACCESS */
 136                 struct {
 137                         __u64 rip;
 138                         __u32 is_write;
 139                         __u32 pad;
 140                 } tpr_access;
 141                 /* Fix the size of the union. */
 142                 char padding[256];
 143         };
 144 };
 145
 146 /* for KVM_TRANSLATE */
 147 struct kvm_translation {
 148         /* in */
 149         __u64 linear_address;
 150
 151         /* out */
 152         __u64 physical_address;
 153         __u8  valid;
 154         __u8  writeable;
 155         __u8  usermode;
 156         __u8  pad[5];
 157 };
 158
 159 /* for KVM_INTERRUPT */
 160 struct kvm_interrupt {
 161         /* in */
 162         __u32 irq;
 163 };
 164
 165 struct kvm_breakpoint {
 166         __u32 enabled;
 167         __u32 padding;
 168         __u64 address;
 169 };
 170
 171 /* for KVM_DEBUG_GUEST */
 172 struct kvm_debug_guest {
 173         /* int */
 174         __u32 enabled;
 175         __u32 pad;
 176         struct kvm_breakpoint breakpoints[4];
 177         __u32 singlestep;
 178 };
 179
 180 /* for KVM_GET_DIRTY_LOG */
 181 struct kvm_dirty_log {
 182         __u32 slot;
 183         __u32 padding;
 184         union {
 185                 void __user *dirty_bitmap; /* one bit per page */
 186                 __u64 padding;
 187         };
 188 };
 189
 190 /* for KVM_SET_SIGNAL_MASK */
 191 struct kvm_signal_mask {
 192         __u32 len;
 193         __u8  sigset[0];
 194 };
 195
 196 /* for KVM_TPR_ACCESS_REPORTING */
 197 struct kvm_tpr_access_ctl {
 198         __u32 enabled;
 199         __u32 flags;
 200         __u32 reserved[8];
 201 };
 202
 203 /* for KVM_SET_VAPIC_ADDR */
 204 struct kvm_vapic_addr {
 205         __u64 vapic_addr;
 206 };
 207
 208 struct kvm_s390_psw {
 209         __u64 mask;
 210         __u64 addr;
 211 };
 212
 213 #define KVMIO 0xAE
 214
 215 /*
 216  * ioctls for /dev/kvm fds:
 217  */
 218 #define KVM_GET_API_VERSION       _IO(KVMIO,   0x00)
 219 #define KVM_CREATE_VM             _IO(KVMIO,   0x01) /* returns a VM fd */
 220 #define KVM_GET_MSR_INDEX_LIST    _IOWR(KVMIO, 0x02, struct kvm_msr_list)
 221
 222 #define KVM_S390_ENABLE_SIE       _IO(KVMIO,   0x06)
 223 /*
 224  * Check if a kvm extension is available.  Argument is extension number,
 225  * return is 1 (yes) or 0 (no, sorry).
 226  */
 227 #define KVM_CHECK_EXTENSION       _IO(KVMIO,   0x03)
 228 /*
 229  * Get size for mmap(vcpu_fd)
 230  */
 231 #define KVM_GET_VCPU_MMAP_SIZE    _IO(KVMIO,   0x04) /* in bytes */
 232 #define KVM_GET_SUPPORTED_CPUID   _IOWR(KVMIO, 0x05, struct kvm_cpuid2)
 233
 234 /*
 235  * Extension capability list.
 236  */
 237 #define KVM_CAP_IRQCHIP   0
 238 #define KVM_CAP_HLT       1
 239 #define KVM_CAP_MMU_SHADOW_CACHE_CONTROL 2
 240 #define KVM_CAP_USER_MEMORY 3
 241 #define KVM_CAP_SET_TSS_ADDR 4
 242 #define KVM_CAP_VAPIC 6
 243 #define KVM_CAP_EXT_CPUID 7
 244 #define KVM_CAP_CLOCKSOURCE 8
 245 #define KVM_CAP_NR_VCPUS 9       /* returns max vcpus per vm */
 246 #define KVM_CAP_NR_MEMSLOTS 10   /* returns max memory slots per vm */
 247 #define KVM_CAP_PIT 11
 248 #define KVM_CAP_NOP_IO_DELAY 12
 249 #define KVM_CAP_PV_MMU 13
 250
 251 /*
 252  * ioctls for VM fds
 253  */
 254 #define KVM_SET_MEMORY_REGION     _IOW(KVMIO, 0x40, struct kvm_memory_region)
 255 #define KVM_SET_NR_MMU_PAGES      _IO(KVMIO, 0x44)
 256 #define KVM_GET_NR_MMU_PAGES      _IO(KVMIO, 0x45)
 257 #define KVM_SET_USER_MEMORY_REGION _IOW(KVMIO, 0x46,\
 258                                         struct kvm_userspace_memory_region)
 259 #define KVM_SET_TSS_ADDR          _IO(KVMIO, 0x47)
 260 /*
 261  * KVM_CREATE_VCPU receives as a parameter the vcpu slot, and returns
 262  * a vcpu fd.
 263  */
 264 #define KVM_CREATE_VCPU           _IO(KVMIO,  0x41)
 265 #define KVM_GET_DIRTY_LOG         _IOW(KVMIO, 0x42, struct kvm_dirty_log)
 266 #define KVM_SET_MEMORY_ALIAS      _IOW(KVMIO, 0x43, struct kvm_memory_alias)
 267 /* Device model IOC */
 268 #define KVM_CREATE_IRQCHIP        _IO(KVMIO,  0x60)
 269 #define KVM_IRQ_LINE              _IOW(KVMIO, 0x61, struct kvm_irq_level)
 270 #define KVM_GET_IRQCHIP           _IOWR(KVMIO, 0x62, struct kvm_irqchip)
 271 #define KVM_SET_IRQCHIP           _IOR(KVMIO,  0x63, struct kvm_irqchip)
 272 #define KVM_CREATE_PIT            _IO(KVMIO,  0x64)
 273 #define KVM_GET_PIT               _IOWR(KVMIO, 0x65, struct kvm_pit_state)
 274 #define KVM_SET_PIT               _IOR(KVMIO,  0x66, struct kvm_pit_state)
 275
 276 /*
 277  * ioctls for vcpu fds
 278  */
 279 #define KVM_RUN                   _IO(KVMIO,   0x80)
 280 #define KVM_GET_REGS              _IOR(KVMIO,  0x81, struct kvm_regs)
 281 #define KVM_SET_REGS              _IOW(KVMIO,  0x82, struct kvm_regs)
 282 #define KVM_GET_SREGS             _IOR(KVMIO,  0x83, struct kvm_sregs)
 283 #define KVM_SET_SREGS             _IOW(KVMIO,  0x84, struct kvm_sregs)
 284 #define KVM_TRANSLATE             _IOWR(KVMIO, 0x85, struct kvm_translation)
 285 #define KVM_INTERRUPT             _IOW(KVMIO,  0x86, struct kvm_interrupt)
 286 #define KVM_DEBUG_GUEST           _IOW(KVMIO,  0x87, struct kvm_debug_guest)
 287 #define KVM_GET_MSRS              _IOWR(KVMIO, 0x88, struct kvm_msrs)
 288 #define KVM_SET_MSRS              _IOW(KVMIO,  0x89, struct kvm_msrs)
 289 #define KVM_SET_CPUID             _IOW(KVMIO,  0x8a, struct kvm_cpuid)
 290 #define KVM_SET_SIGNAL_MASK       _IOW(KVMIO,  0x8b, struct kvm_signal_mask)
 291 #define KVM_GET_FPU               _IOR(KVMIO,  0x8c, struct kvm_fpu)
 292 #define KVM_SET_FPU               _IOW(KVMIO,  0x8d, struct kvm_fpu)
 293 #define KVM_GET_LAPIC             _IOR(KVMIO,  0x8e, struct kvm_lapic_state)
 294 #define KVM_SET_LAPIC             _IOW(KVMIO,  0x8f, struct kvm_lapic_state)
 295 #define KVM_SET_CPUID2            _IOW(KVMIO,  0x90, struct kvm_cpuid2)
 296 #define KVM_GET_CPUID2            _IOWR(KVMIO, 0x91, struct kvm_cpuid2)
 297 /* Available with KVM_CAP_VAPIC */
 298 #define KVM_TPR_ACCESS_REPORTING  _IOWR(KVMIO,  0x92, struct kvm_tpr_access_ctl)
 299 /* Available with KVM_CAP_VAPIC */
 300 #define KVM_SET_VAPIC_ADDR        _IOW(KVMIO,  0x93, struct kvm_vapic_addr)
 301 /* store status for s390 */
 302 #define KVM_S390_STORE_STATUS_NOADDR    (-1ul)
 303 #define KVM_S390_STORE_STATUS_PREFIXED  (-2ul)
 304 #define KVM_S390_STORE_STATUS     _IOW(KVMIO,  0x95, unsigned long)
 305 /* initial ipl psw for s390 */
 306 #define KVM_S390_SET_INITIAL_PSW  _IOW(KVMIO,  0x96, struct kvm_s390_psw)
 307 /* initial reset for s390 */
 308 #define KVM_S390_INITIAL_RESET    _IO(KVMIO,  0x97)
 309
 310 #endif