linux-headers/asm-x86/kvm.h

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 #ifndef _ASM_X86_KVM_H
   3 #define _ASM_X86_KVM_H
   4
   5 /*
   6  * KVM x86 specific structures and definitions
   7  *
   8  */
   9
  10 #include <linux/types.h>
  11 #include <linux/ioctl.h>
  12
  13 #define KVM_PIO_PAGE_OFFSET 1
  14 #define KVM_COALESCED_MMIO_PAGE_OFFSET 2
  15
  16 #define DE_VECTOR 0
  17 #define DB_VECTOR 1
  18 #define BP_VECTOR 3
  19 #define OF_VECTOR 4
  20 #define BR_VECTOR 5
  21 #define UD_VECTOR 6
  22 #define NM_VECTOR 7
  23 #define DF_VECTOR 8
  24 #define TS_VECTOR 10
  25 #define NP_VECTOR 11
  26 #define SS_VECTOR 12
  27 #define GP_VECTOR 13
  28 #define PF_VECTOR 14
  29 #define MF_VECTOR 16
  30 #define AC_VECTOR 17
  31 #define MC_VECTOR 18
  32 #define XM_VECTOR 19
  33 #define VE_VECTOR 20
  34
  35 /* Select x86 specific features in <linux/kvm.h> */
  36 #define __KVM_HAVE_PIT
  37 #define __KVM_HAVE_IOAPIC
  38 #define __KVM_HAVE_IRQ_LINE
  39 #define __KVM_HAVE_MSI
  40 #define __KVM_HAVE_USER_NMI
  41 #define __KVM_HAVE_GUEST_DEBUG
  42 #define __KVM_HAVE_MSIX
  43 #define __KVM_HAVE_MCE
  44 #define __KVM_HAVE_PIT_STATE2
  45 #define __KVM_HAVE_XEN_HVM
  46 #define __KVM_HAVE_VCPU_EVENTS
  47 #define __KVM_HAVE_DEBUGREGS
  48 #define __KVM_HAVE_XSAVE
  49 #define __KVM_HAVE_XCRS
  50 #define __KVM_HAVE_READONLY_MEM
  51
  52 /* Architectural interrupt line count. */
  53 #define KVM_NR_INTERRUPTS 256
  54
  55 struct kvm_memory_alias {
  56         __u32 slot;  /* this has a different namespace than memory slots */
  57         __u32 flags;
  58         __u64 guest_phys_addr;
  59         __u64 memory_size;
  60         __u64 target_phys_addr;
  61 };
  62
  63 /* for KVM_GET_IRQCHIP and KVM_SET_IRQCHIP */
  64 struct kvm_pic_state {
  65         __u8 last_irr;  /* edge detection */
  66         __u8 irr;               /* interrupt request register */
  67         __u8 imr;               /* interrupt mask register */
  68         __u8 isr;               /* interrupt service register */
  69         __u8 priority_add;      /* highest irq priority */
  70         __u8 irq_base;
  71         __u8 read_reg_select;
  72         __u8 poll;
  73         __u8 special_mask;
  74         __u8 init_state;
  75         __u8 auto_eoi;
  76         __u8 rotate_on_auto_eoi;
  77         __u8 special_fully_nested_mode;
  78         __u8 init4;             /* true if 4 byte init */
  79         __u8 elcr;              /* PIIX edge/trigger selection */
  80         __u8 elcr_mask;
  81 };
  82
  83 #define KVM_IOAPIC_NUM_PINS  24
  84 struct kvm_ioapic_state {
  85         __u64 base_address;
  86         __u32 ioregsel;
  87         __u32 id;
  88         __u32 irr;
  89         __u32 pad;
  90         union {
  91                 __u64 bits;
  92                 struct {
  93                         __u8 vector;
  94                         __u8 delivery_mode:3;
  95                         __u8 dest_mode:1;
  96                         __u8 delivery_status:1;
  97                         __u8 polarity:1;
  98                         __u8 remote_irr:1;
  99                         __u8 trig_mode:1;
 100                         __u8 mask:1;
 101                         __u8 reserve:7;
 102                         __u8 reserved[4];
 103                         __u8 dest_id;
 104                 } fields;
 105         } redirtbl[KVM_IOAPIC_NUM_PINS];
 106 };
 107
 108 #define KVM_IRQCHIP_PIC_MASTER   0
 109 #define KVM_IRQCHIP_PIC_SLAVE    1
 110 #define KVM_IRQCHIP_IOAPIC       2
 111 #define KVM_NR_IRQCHIPS          3
 112
 113 #define KVM_RUN_X86_SMM          (1 << 0)
 114
 115 /* for KVM_GET_REGS and KVM_SET_REGS */
 116 struct kvm_regs {
 117         /* out (KVM_GET_REGS) / in (KVM_SET_REGS) */
 118         __u64 rax, rbx, rcx, rdx;
 119         __u64 rsi, rdi, rsp, rbp;
 120         __u64 r8,  r9,  r10, r11;
 121         __u64 r12, r13, r14, r15;
 122         __u64 rip, rflags;
 123 };
 124
 125 /* for KVM_GET_LAPIC and KVM_SET_LAPIC */
 126 #define KVM_APIC_REG_SIZE 0x400
 127 struct kvm_lapic_state {
 128         char regs[KVM_APIC_REG_SIZE];
 129 };
 130
 131 struct kvm_segment {
 132         __u64 base;
 133         __u32 limit;
 134         __u16 selector;
 135         __u8  type;
 136         __u8  present, dpl, db, s, l, g, avl;
 137         __u8  unusable;
 138         __u8  padding;
 139 };
 140
 141 struct kvm_dtable {
 142         __u64 base;
 143         __u16 limit;
 144         __u16 padding[3];
 145 };
 146
 147
 148 /* for KVM_GET_SREGS and KVM_SET_SREGS */
 149 struct kvm_sregs {
 150         /* out (KVM_GET_SREGS) / in (KVM_SET_SREGS) */
 151         struct kvm_segment cs, ds, es, fs, gs, ss;
 152         struct kvm_segment tr, ldt;
 153         struct kvm_dtable gdt, idt;
 154         __u64 cr0, cr2, cr3, cr4, cr8;
 155         __u64 efer;
 156         __u64 apic_base;
 157         __u64 interrupt_bitmap[(KVM_NR_INTERRUPTS + 63) / 64];
 158 };
 159
 160 /* for KVM_GET_FPU and KVM_SET_FPU */
 161 struct kvm_fpu {
 162         __u8  fpr[8][16];
 163         __u16 fcw;
 164         __u16 fsw;
 165         __u8  ftwx;  /* in fxsave format */
 166         __u8  pad1;
 167         __u16 last_opcode;
 168         __u64 last_ip;
 169         __u64 last_dp;
 170         __u8  xmm[16][16];
 171         __u32 mxcsr;
 172         __u32 pad2;
 173 };
 174
 175 struct kvm_msr_entry {
 176         __u32 index;
 177         __u32 reserved;
 178         __u64 data;
 179 };
 180
 181 /* for KVM_GET_MSRS and KVM_SET_MSRS */
 182 struct kvm_msrs {
 183         __u32 nmsrs; /* number of msrs in entries */
 184         __u32 pad;
 185
 186         struct kvm_msr_entry entries[0];
 187 };
 188
 189 /* for KVM_GET_MSR_INDEX_LIST */
 190 struct kvm_msr_list {
 191         __u32 nmsrs; /* number of msrs in entries */
 192         __u32 indices[0];
 193 };
 194
 195
 196 struct kvm_cpuid_entry {
 197         __u32 function;
 198         __u32 eax;
 199         __u32 ebx;
 200         __u32 ecx;
 201         __u32 edx;
 202         __u32 padding;
 203 };
 204
 205 /* for KVM_SET_CPUID */
 206 struct kvm_cpuid {
 207         __u32 nent;
 208         __u32 padding;
 209         struct kvm_cpuid_entry entries[0];
 210 };
 211
 212 struct kvm_cpuid_entry2 {
 213         __u32 function;
 214         __u32 index;
 215         __u32 flags;
 216         __u32 eax;
 217         __u32 ebx;
 218         __u32 ecx;
 219         __u32 edx;
 220         __u32 padding[3];
 221 };
 222
 223 #define KVM_CPUID_FLAG_SIGNIFCANT_INDEX         (1 << 0)
 224 #define KVM_CPUID_FLAG_STATEFUL_FUNC            (1 << 1)
 225 #define KVM_CPUID_FLAG_STATE_READ_NEXT          (1 << 2)
 226
 227 /* for KVM_SET_CPUID2 */
 228 struct kvm_cpuid2 {
 229         __u32 nent;
 230         __u32 padding;
 231         struct kvm_cpuid_entry2 entries[0];
 232 };
 233
 234 /* for KVM_GET_PIT and KVM_SET_PIT */
 235 struct kvm_pit_channel_state {
 236         __u32 count; /* can be 65536 */
 237         __u16 latched_count;
 238         __u8 count_latched;
 239         __u8 status_latched;
 240         __u8 status;
 241         __u8 read_state;
 242         __u8 write_state;
 243         __u8 write_latch;
 244         __u8 rw_mode;
 245         __u8 mode;
 246         __u8 bcd;
 247         __u8 gate;
 248         __s64 count_load_time;
 249 };
 250
 251 struct kvm_debug_exit_arch {
 252         __u32 exception;
 253         __u32 pad;
 254         __u64 pc;
 255         __u64 dr6;
 256         __u64 dr7;
 257 };
 258
 259 #define KVM_GUESTDBG_USE_SW_BP          0x00010000
 260 #define KVM_GUESTDBG_USE_HW_BP          0x00020000
 261 #define KVM_GUESTDBG_INJECT_DB          0x00040000
 262 #define KVM_GUESTDBG_INJECT_BP          0x00080000
 263
 264 /* for KVM_SET_GUEST_DEBUG */
 265 struct kvm_guest_debug_arch {
 266         __u64 debugreg[8];
 267 };
 268
 269 struct kvm_pit_state {
 270         struct kvm_pit_channel_state channels[3];
 271 };
 272
 273 #define KVM_PIT_FLAGS_HPET_LEGACY  0x00000001
 274
 275 struct kvm_pit_state2 {
 276         struct kvm_pit_channel_state channels[3];
 277         __u32 flags;
 278         __u32 reserved[9];
 279 };
 280
 281 struct kvm_reinject_control {
 282         __u8 pit_reinject;
 283         __u8 reserved[31];
 284 };
 285
 286 /* When set in flags, include corresponding fields on KVM_SET_VCPU_EVENTS */
 287 #define KVM_VCPUEVENT_VALID_NMI_PENDING 0x00000001
 288 #define KVM_VCPUEVENT_VALID_SIPI_VECTOR 0x00000002
 289 #define KVM_VCPUEVENT_VALID_SHADOW      0x00000004
 290 #define KVM_VCPUEVENT_VALID_SMM         0x00000008
 291 #define KVM_VCPUEVENT_VALID_PAYLOAD     0x00000010
 292
 293 /* Interrupt shadow states */
 294 #define KVM_X86_SHADOW_INT_MOV_SS       0x01
 295 #define KVM_X86_SHADOW_INT_STI          0x02
 296
 297 /* for KVM_GET/SET_VCPU_EVENTS */
 298 struct kvm_vcpu_events {
 299         struct {
 300                 __u8 injected;
 301                 __u8 nr;
 302                 __u8 has_error_code;
 303                 __u8 pending;
 304                 __u32 error_code;
 305         } exception;
 306         struct {
 307                 __u8 injected;
 308                 __u8 nr;
 309                 __u8 soft;
 310                 __u8 shadow;
 311         } interrupt;
 312         struct {
 313                 __u8 injected;
 314                 __u8 pending;
 315                 __u8 masked;
 316                 __u8 pad;
 317         } nmi;
 318         __u32 sipi_vector;
 319         __u32 flags;
 320         struct {
 321                 __u8 smm;
 322                 __u8 pending;
 323                 __u8 smm_inside_nmi;
 324                 __u8 latched_init;
 325         } smi;
 326         __u8 reserved[27];
 327         __u8 exception_has_payload;
 328         __u64 exception_payload;
 329 };
 330
 331 /* for KVM_GET/SET_DEBUGREGS */
 332 struct kvm_debugregs {
 333         __u64 db[4];
 334         __u64 dr6;
 335         __u64 dr7;
 336         __u64 flags;
 337         __u64 reserved[9];
 338 };
 339
 340 /* for KVM_CAP_XSAVE */
 341 struct kvm_xsave {
 342         __u32 region[1024];
 343 };
 344
 345 #define KVM_MAX_XCRS    16
 346
 347 struct kvm_xcr {
 348         __u32 xcr;
 349         __u32 reserved;
 350         __u64 value;
 351 };
 352
 353 struct kvm_xcrs {
 354         __u32 nr_xcrs;
 355         __u32 flags;
 356         struct kvm_xcr xcrs[KVM_MAX_XCRS];
 357         __u64 padding[16];
 358 };
 359
 360 #define KVM_SYNC_X86_REGS      (1UL << 0)
 361 #define KVM_SYNC_X86_SREGS     (1UL << 1)
 362 #define KVM_SYNC_X86_EVENTS    (1UL << 2)
 363
 364 #define KVM_SYNC_X86_VALID_FIELDS \
 365         (KVM_SYNC_X86_REGS| \
 366          KVM_SYNC_X86_SREGS| \
 367          KVM_SYNC_X86_EVENTS)
 368
 369 /* kvm_sync_regs struct included by kvm_run struct */
 370 struct kvm_sync_regs {
 371         /* Members of this structure are potentially malicious.
 372          * Care must be taken by code reading, esp. interpreting,
 373          * data fields from them inside KVM to prevent TOCTOU and
 374          * double-fetch types of vulnerabilities.
 375          */
 376         struct kvm_regs regs;
 377         struct kvm_sregs sregs;
 378         struct kvm_vcpu_events events;
 379 };
 380
 381 #define KVM_X86_QUIRK_LINT0_REENABLED   (1 << 0)
 382 #define KVM_X86_QUIRK_CD_NW_CLEARED     (1 << 1)
 383 #define KVM_X86_QUIRK_LAPIC_MMIO_HOLE   (1 << 2)
 384
 385 #define KVM_STATE_NESTED_GUEST_MODE     0x00000001
 386 #define KVM_STATE_NESTED_RUN_PENDING    0x00000002
 387 #define KVM_STATE_NESTED_EVMCS          0x00000004
 388
 389 #define KVM_STATE_NESTED_SMM_GUEST_MODE 0x00000001
 390 #define KVM_STATE_NESTED_SMM_VMXON      0x00000002
 391
 392 struct kvm_vmx_nested_state {
 393         __u64 vmxon_pa;
 394         __u64 vmcs_pa;
 395
 396         struct {
 397                 __u16 flags;
 398         } smm;
 399 };
 400
 401 /* for KVM_CAP_NESTED_STATE */
 402 struct kvm_nested_state {
 403         /* KVM_STATE_* flags */
 404         __u16 flags;
 405
 406         /* 0 for VMX, 1 for SVM.  */
 407         __u16 format;
 408
 409         /* 128 for SVM, 128 + VMCS size for VMX.  */
 410         __u32 size;
 411
 412         union {
 413                 /* VMXON, VMCS */
 414                 struct kvm_vmx_nested_state vmx;
 415
 416                 /* Pad the header to 128 bytes.  */
 417                 __u8 pad[120];
 418         };
 419
 420         __u8 data[0];
 421 };
 422
 423 #endif /* _ASM_X86_KVM_H */