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 #define KVM_DIRTY_LOG_PAGE_OFFSET 64
  16
  17 #define DE_VECTOR 0
  18 #define DB_VECTOR 1
  19 #define BP_VECTOR 3
  20 #define OF_VECTOR 4
  21 #define BR_VECTOR 5
  22 #define UD_VECTOR 6
  23 #define NM_VECTOR 7
  24 #define DF_VECTOR 8
  25 #define TS_VECTOR 10
  26 #define NP_VECTOR 11
  27 #define SS_VECTOR 12
  28 #define GP_VECTOR 13
  29 #define PF_VECTOR 14
  30 #define MF_VECTOR 16
  31 #define AC_VECTOR 17
  32 #define MC_VECTOR 18
  33 #define XM_VECTOR 19
  34 #define VE_VECTOR 20
  35
  36 /* Select x86 specific features in <linux/kvm.h> */
  37 #define __KVM_HAVE_PIT
  38 #define __KVM_HAVE_IOAPIC
  39 #define __KVM_HAVE_IRQ_LINE
  40 #define __KVM_HAVE_MSI
  41 #define __KVM_HAVE_USER_NMI
  42 #define __KVM_HAVE_GUEST_DEBUG
  43 #define __KVM_HAVE_MSIX
  44 #define __KVM_HAVE_MCE
  45 #define __KVM_HAVE_PIT_STATE2
  46 #define __KVM_HAVE_XEN_HVM
  47 #define __KVM_HAVE_VCPU_EVENTS
  48 #define __KVM_HAVE_DEBUGREGS
  49 #define __KVM_HAVE_XSAVE
  50 #define __KVM_HAVE_XCRS
  51 #define __KVM_HAVE_READONLY_MEM
  52
  53 /* Architectural interrupt line count. */
  54 #define KVM_NR_INTERRUPTS 256
  55
  56 struct kvm_memory_alias {
  57         __u32 slot;  /* this has a different namespace than memory slots */
  58         __u32 flags;
  59         __u64 guest_phys_addr;
  60         __u64 memory_size;
  61         __u64 target_phys_addr;
  62 };
  63
  64 /* for KVM_GET_IRQCHIP and KVM_SET_IRQCHIP */
  65 struct kvm_pic_state {
  66         __u8 last_irr;  /* edge detection */
  67         __u8 irr;               /* interrupt request register */
  68         __u8 imr;               /* interrupt mask register */
  69         __u8 isr;               /* interrupt service register */
  70         __u8 priority_add;      /* highest irq priority */
  71         __u8 irq_base;
  72         __u8 read_reg_select;
  73         __u8 poll;
  74         __u8 special_mask;
  75         __u8 init_state;
  76         __u8 auto_eoi;
  77         __u8 rotate_on_auto_eoi;
  78         __u8 special_fully_nested_mode;
  79         __u8 init4;             /* true if 4 byte init */
  80         __u8 elcr;              /* PIIX edge/trigger selection */
  81         __u8 elcr_mask;
  82 };
  83
  84 #define KVM_IOAPIC_NUM_PINS  24
  85 struct kvm_ioapic_state {
  86         __u64 base_address;
  87         __u32 ioregsel;
  88         __u32 id;
  89         __u32 irr;
  90         __u32 pad;
  91         union {
  92                 __u64 bits;
  93                 struct {
  94                         __u8 vector;
  95                         __u8 delivery_mode:3;
  96                         __u8 dest_mode:1;
  97                         __u8 delivery_status:1;
  98                         __u8 polarity:1;
  99                         __u8 remote_irr:1;
 100                         __u8 trig_mode:1;
 101                         __u8 mask:1;
 102                         __u8 reserve:7;
 103                         __u8 reserved[4];
 104                         __u8 dest_id;
 105                 } fields;
 106         } redirtbl[KVM_IOAPIC_NUM_PINS];
 107 };
 108
 109 #define KVM_IRQCHIP_PIC_MASTER   0
 110 #define KVM_IRQCHIP_PIC_SLAVE    1
 111 #define KVM_IRQCHIP_IOAPIC       2
 112 #define KVM_NR_IRQCHIPS          3
 113
 114 #define KVM_RUN_X86_SMM          (1 << 0)
 115
 116 /* for KVM_GET_REGS and KVM_SET_REGS */
 117 struct kvm_regs {
 118         /* out (KVM_GET_REGS) / in (KVM_SET_REGS) */
 119         __u64 rax, rbx, rcx, rdx;
 120         __u64 rsi, rdi, rsp, rbp;
 121         __u64 r8,  r9,  r10, r11;
 122         __u64 r12, r13, r14, r15;
 123         __u64 rip, rflags;
 124 };
 125
 126 /* for KVM_GET_LAPIC and KVM_SET_LAPIC */
 127 #define KVM_APIC_REG_SIZE 0x400
 128 struct kvm_lapic_state {
 129         char regs[KVM_APIC_REG_SIZE];
 130 };
 131
 132 struct kvm_segment {
 133         __u64 base;
 134         __u32 limit;
 135         __u16 selector;
 136         __u8  type;
 137         __u8  present, dpl, db, s, l, g, avl;
 138         __u8  unusable;
 139         __u8  padding;
 140 };
 141
 142 struct kvm_dtable {
 143         __u64 base;
 144         __u16 limit;
 145         __u16 padding[3];
 146 };
 147
 148
 149 /* for KVM_GET_SREGS and KVM_SET_SREGS */
 150 struct kvm_sregs {
 151         /* out (KVM_GET_SREGS) / in (KVM_SET_SREGS) */
 152         struct kvm_segment cs, ds, es, fs, gs, ss;
 153         struct kvm_segment tr, ldt;
 154         struct kvm_dtable gdt, idt;
 155         __u64 cr0, cr2, cr3, cr4, cr8;
 156         __u64 efer;
 157         __u64 apic_base;
 158         __u64 interrupt_bitmap[(KVM_NR_INTERRUPTS + 63) / 64];
 159 };
 160
 161 /* for KVM_GET_FPU and KVM_SET_FPU */
 162 struct kvm_fpu {
 163         __u8  fpr[8][16];
 164         __u16 fcw;
 165         __u16 fsw;
 166         __u8  ftwx;  /* in fxsave format */
 167         __u8  pad1;
 168         __u16 last_opcode;
 169         __u64 last_ip;
 170         __u64 last_dp;
 171         __u8  xmm[16][16];
 172         __u32 mxcsr;
 173         __u32 pad2;
 174 };
 175
 176 struct kvm_msr_entry {
 177         __u32 index;
 178         __u32 reserved;
 179         __u64 data;
 180 };
 181
 182 /* for KVM_GET_MSRS and KVM_SET_MSRS */
 183 struct kvm_msrs {
 184         __u32 nmsrs; /* number of msrs in entries */
 185         __u32 pad;
 186
 187         struct kvm_msr_entry entries[0];
 188 };
 189
 190 /* for KVM_GET_MSR_INDEX_LIST */
 191 struct kvm_msr_list {
 192         __u32 nmsrs; /* number of msrs in entries */
 193         __u32 indices[0];
 194 };
 195
 196 /* Maximum size of any access bitmap in bytes */
 197 #define KVM_MSR_FILTER_MAX_BITMAP_SIZE 0x600
 198
 199 /* for KVM_X86_SET_MSR_FILTER */
 200 struct kvm_msr_filter_range {
 201 #define KVM_MSR_FILTER_READ  (1 << 0)
 202 #define KVM_MSR_FILTER_WRITE (1 << 1)
 203         __u32 flags;
 204         __u32 nmsrs; /* number of msrs in bitmap */
 205         __u32 base;  /* MSR index the bitmap starts at */
 206         __u8 *bitmap; /* a 1 bit allows the operations in flags, 0 denies */
 207 };
 208
 209 #define KVM_MSR_FILTER_MAX_RANGES 16
 210 struct kvm_msr_filter {
 211 #define KVM_MSR_FILTER_DEFAULT_ALLOW (0 << 0)
 212 #define KVM_MSR_FILTER_DEFAULT_DENY  (1 << 0)
 213         __u32 flags;
 214         struct kvm_msr_filter_range ranges[KVM_MSR_FILTER_MAX_RANGES];
 215 };
 216
 217 struct kvm_cpuid_entry {
 218         __u32 function;
 219         __u32 eax;
 220         __u32 ebx;
 221         __u32 ecx;
 222         __u32 edx;
 223         __u32 padding;
 224 };
 225
 226 /* for KVM_SET_CPUID */
 227 struct kvm_cpuid {
 228         __u32 nent;
 229         __u32 padding;
 230         struct kvm_cpuid_entry entries[0];
 231 };
 232
 233 struct kvm_cpuid_entry2 {
 234         __u32 function;
 235         __u32 index;
 236         __u32 flags;
 237         __u32 eax;
 238         __u32 ebx;
 239         __u32 ecx;
 240         __u32 edx;
 241         __u32 padding[3];
 242 };
 243
 244 #define KVM_CPUID_FLAG_SIGNIFCANT_INDEX         (1 << 0)
 245 #define KVM_CPUID_FLAG_STATEFUL_FUNC            (1 << 1)
 246 #define KVM_CPUID_FLAG_STATE_READ_NEXT          (1 << 2)
 247
 248 /* for KVM_SET_CPUID2 */
 249 struct kvm_cpuid2 {
 250         __u32 nent;
 251         __u32 padding;
 252         struct kvm_cpuid_entry2 entries[0];
 253 };
 254
 255 /* for KVM_GET_PIT and KVM_SET_PIT */
 256 struct kvm_pit_channel_state {
 257         __u32 count; /* can be 65536 */
 258         __u16 latched_count;
 259         __u8 count_latched;
 260         __u8 status_latched;
 261         __u8 status;
 262         __u8 read_state;
 263         __u8 write_state;
 264         __u8 write_latch;
 265         __u8 rw_mode;
 266         __u8 mode;
 267         __u8 bcd;
 268         __u8 gate;
 269         __s64 count_load_time;
 270 };
 271
 272 struct kvm_debug_exit_arch {
 273         __u32 exception;
 274         __u32 pad;
 275         __u64 pc;
 276         __u64 dr6;
 277         __u64 dr7;
 278 };
 279
 280 #define KVM_GUESTDBG_USE_SW_BP          0x00010000
 281 #define KVM_GUESTDBG_USE_HW_BP          0x00020000
 282 #define KVM_GUESTDBG_INJECT_DB          0x00040000
 283 #define KVM_GUESTDBG_INJECT_BP          0x00080000
 284
 285 /* for KVM_SET_GUEST_DEBUG */
 286 struct kvm_guest_debug_arch {
 287         __u64 debugreg[8];
 288 };
 289
 290 struct kvm_pit_state {
 291         struct kvm_pit_channel_state channels[3];
 292 };
 293
 294 #define KVM_PIT_FLAGS_HPET_LEGACY  0x00000001
 295
 296 struct kvm_pit_state2 {
 297         struct kvm_pit_channel_state channels[3];
 298         __u32 flags;
 299         __u32 reserved[9];
 300 };
 301
 302 struct kvm_reinject_control {
 303         __u8 pit_reinject;
 304         __u8 reserved[31];
 305 };
 306
 307 /* When set in flags, include corresponding fields on KVM_SET_VCPU_EVENTS */
 308 #define KVM_VCPUEVENT_VALID_NMI_PENDING 0x00000001
 309 #define KVM_VCPUEVENT_VALID_SIPI_VECTOR 0x00000002
 310 #define KVM_VCPUEVENT_VALID_SHADOW      0x00000004
 311 #define KVM_VCPUEVENT_VALID_SMM         0x00000008
 312 #define KVM_VCPUEVENT_VALID_PAYLOAD     0x00000010
 313
 314 /* Interrupt shadow states */
 315 #define KVM_X86_SHADOW_INT_MOV_SS       0x01
 316 #define KVM_X86_SHADOW_INT_STI          0x02
 317
 318 /* for KVM_GET/SET_VCPU_EVENTS */
 319 struct kvm_vcpu_events {
 320         struct {
 321                 __u8 injected;
 322                 __u8 nr;
 323                 __u8 has_error_code;
 324                 __u8 pending;
 325                 __u32 error_code;
 326         } exception;
 327         struct {
 328                 __u8 injected;
 329                 __u8 nr;
 330                 __u8 soft;
 331                 __u8 shadow;
 332         } interrupt;
 333         struct {
 334                 __u8 injected;
 335                 __u8 pending;
 336                 __u8 masked;
 337                 __u8 pad;
 338         } nmi;
 339         __u32 sipi_vector;
 340         __u32 flags;
 341         struct {
 342                 __u8 smm;
 343                 __u8 pending;
 344                 __u8 smm_inside_nmi;
 345                 __u8 latched_init;
 346         } smi;
 347         __u8 reserved[27];
 348         __u8 exception_has_payload;
 349         __u64 exception_payload;
 350 };
 351
 352 /* for KVM_GET/SET_DEBUGREGS */
 353 struct kvm_debugregs {
 354         __u64 db[4];
 355         __u64 dr6;
 356         __u64 dr7;
 357         __u64 flags;
 358         __u64 reserved[9];
 359 };
 360
 361 /* for KVM_CAP_XSAVE */
 362 struct kvm_xsave {
 363         __u32 region[1024];
 364 };
 365
 366 #define KVM_MAX_XCRS    16
 367
 368 struct kvm_xcr {
 369         __u32 xcr;
 370         __u32 reserved;
 371         __u64 value;
 372 };
 373
 374 struct kvm_xcrs {
 375         __u32 nr_xcrs;
 376         __u32 flags;
 377         struct kvm_xcr xcrs[KVM_MAX_XCRS];
 378         __u64 padding[16];
 379 };
 380
 381 #define KVM_SYNC_X86_REGS      (1UL << 0)
 382 #define KVM_SYNC_X86_SREGS     (1UL << 1)
 383 #define KVM_SYNC_X86_EVENTS    (1UL << 2)
 384
 385 #define KVM_SYNC_X86_VALID_FIELDS \
 386         (KVM_SYNC_X86_REGS| \
 387          KVM_SYNC_X86_SREGS| \
 388          KVM_SYNC_X86_EVENTS)
 389
 390 /* kvm_sync_regs struct included by kvm_run struct */
 391 struct kvm_sync_regs {
 392         /* Members of this structure are potentially malicious.
 393          * Care must be taken by code reading, esp. interpreting,
 394          * data fields from them inside KVM to prevent TOCTOU and
 395          * double-fetch types of vulnerabilities.
 396          */
 397         struct kvm_regs regs;
 398         struct kvm_sregs sregs;
 399         struct kvm_vcpu_events events;
 400 };
 401
 402 #define KVM_X86_QUIRK_LINT0_REENABLED      (1 << 0)
 403 #define KVM_X86_QUIRK_CD_NW_CLEARED        (1 << 1)
 404 #define KVM_X86_QUIRK_LAPIC_MMIO_HOLE      (1 << 2)
 405 #define KVM_X86_QUIRK_OUT_7E_INC_RIP       (1 << 3)
 406 #define KVM_X86_QUIRK_MISC_ENABLE_NO_MWAIT (1 << 4)
 407
 408 #define KVM_STATE_NESTED_FORMAT_VMX     0
 409 #define KVM_STATE_NESTED_FORMAT_SVM     1
 410
 411 #define KVM_STATE_NESTED_GUEST_MODE     0x00000001
 412 #define KVM_STATE_NESTED_RUN_PENDING    0x00000002
 413 #define KVM_STATE_NESTED_EVMCS          0x00000004
 414 #define KVM_STATE_NESTED_MTF_PENDING    0x00000008
 415 #define KVM_STATE_NESTED_GIF_SET        0x00000100
 416
 417 #define KVM_STATE_NESTED_SMM_GUEST_MODE 0x00000001
 418 #define KVM_STATE_NESTED_SMM_VMXON      0x00000002
 419
 420 #define KVM_STATE_NESTED_VMX_VMCS_SIZE  0x1000
 421
 422 #define KVM_STATE_NESTED_SVM_VMCB_SIZE  0x1000
 423
 424 #define KVM_STATE_VMX_PREEMPTION_TIMER_DEADLINE 0x00000001
 425
 426 struct kvm_vmx_nested_state_data {
 427         __u8 vmcs12[KVM_STATE_NESTED_VMX_VMCS_SIZE];
 428         __u8 shadow_vmcs12[KVM_STATE_NESTED_VMX_VMCS_SIZE];
 429 };
 430
 431 struct kvm_vmx_nested_state_hdr {
 432         __u64 vmxon_pa;
 433         __u64 vmcs12_pa;
 434
 435         struct {
 436                 __u16 flags;
 437         } smm;
 438
 439         __u32 flags;
 440         __u64 preemption_timer_deadline;
 441 };
 442
 443 struct kvm_svm_nested_state_data {
 444         /* Save area only used if KVM_STATE_NESTED_RUN_PENDING.  */
 445         __u8 vmcb12[KVM_STATE_NESTED_SVM_VMCB_SIZE];
 446 };
 447
 448 struct kvm_svm_nested_state_hdr {
 449         __u64 vmcb_pa;
 450 };
 451
 452 /* for KVM_CAP_NESTED_STATE */
 453 struct kvm_nested_state {
 454         __u16 flags;
 455         __u16 format;
 456         __u32 size;
 457
 458         union {
 459                 struct kvm_vmx_nested_state_hdr vmx;
 460                 struct kvm_svm_nested_state_hdr svm;
 461
 462                 /* Pad the header to 128 bytes.  */
 463                 __u8 pad[120];
 464         } hdr;
 465
 466         /*
 467          * Define data region as 0 bytes to preserve backwards-compatability
 468          * to old definition of kvm_nested_state in order to avoid changing
 469          * KVM_{GET,PUT}_NESTED_STATE ioctl values.
 470          */
 471         union {
 472                 struct kvm_vmx_nested_state_data vmx[0];
 473                 struct kvm_svm_nested_state_data svm[0];
 474         } data;
 475 };
 476
 477 /* for KVM_CAP_PMU_EVENT_FILTER */
 478 struct kvm_pmu_event_filter {
 479         __u32 action;
 480         __u32 nevents;
 481         __u32 fixed_counter_bitmap;
 482         __u32 flags;
 483         __u32 pad[4];
 484         __u64 events[0];
 485 };
 486
 487 #define KVM_PMU_EVENT_ALLOW 0
 488 #define KVM_PMU_EVENT_DENY 1
 489
 490 #endif /* _ASM_X86_KVM_H */