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 #include <linux/stddef.h> 13 14 #define KVM_PIO_PAGE_OFFSET 1 15 #define KVM_COALESCED_MMIO_PAGE_OFFSET 2 16 #define KVM_DIRTY_LOG_PAGE_OFFSET 64 17 18 #define DE_VECTOR 0 19 #define DB_VECTOR 1 20 #define BP_VECTOR 3 21 #define OF_VECTOR 4 22 #define BR_VECTOR 5 23 #define UD_VECTOR 6 24 #define NM_VECTOR 7 25 #define DF_VECTOR 8 26 #define TS_VECTOR 10 27 #define NP_VECTOR 11 28 #define SS_VECTOR 12 29 #define GP_VECTOR 13 30 #define PF_VECTOR 14 31 #define MF_VECTOR 16 32 #define AC_VECTOR 17 33 #define MC_VECTOR 18 34 #define XM_VECTOR 19 35 #define VE_VECTOR 20 36 37 /* Select x86 specific features in <linux/kvm.h> */ 38 #define __KVM_HAVE_PIT 39 #define __KVM_HAVE_IOAPIC 40 #define __KVM_HAVE_IRQ_LINE 41 #define __KVM_HAVE_MSI 42 #define __KVM_HAVE_USER_NMI 43 #define __KVM_HAVE_GUEST_DEBUG 44 #define __KVM_HAVE_MSIX 45 #define __KVM_HAVE_MCE 46 #define __KVM_HAVE_PIT_STATE2 47 #define __KVM_HAVE_XEN_HVM 48 #define __KVM_HAVE_VCPU_EVENTS 49 #define __KVM_HAVE_DEBUGREGS 50 #define __KVM_HAVE_XSAVE 51 #define __KVM_HAVE_XCRS 52 #define __KVM_HAVE_READONLY_MEM 53 54 /* Architectural interrupt line count. */ 55 #define KVM_NR_INTERRUPTS 256 56 57 /* for KVM_GET_IRQCHIP and KVM_SET_IRQCHIP */ 58 struct kvm_pic_state { 59 __u8 last_irr; /* edge detection */ 60 __u8 irr; /* interrupt request register */ 61 __u8 imr; /* interrupt mask register */ 62 __u8 isr; /* interrupt service register */ 63 __u8 priority_add; /* highest irq priority */ 64 __u8 irq_base; 65 __u8 read_reg_select; 66 __u8 poll; 67 __u8 special_mask; 68 __u8 init_state; 69 __u8 auto_eoi; 70 __u8 rotate_on_auto_eoi; 71 __u8 special_fully_nested_mode; 72 __u8 init4; /* true if 4 byte init */ 73 __u8 elcr; /* PIIX edge/trigger selection */ 74 __u8 elcr_mask; 75 }; 76 77 #define KVM_IOAPIC_NUM_PINS 24 78 struct kvm_ioapic_state { 79 __u64 base_address; 80 __u32 ioregsel; 81 __u32 id; 82 __u32 irr; 83 __u32 pad; 84 union { 85 __u64 bits; 86 struct { 87 __u8 vector; 88 __u8 delivery_mode:3; 89 __u8 dest_mode:1; 90 __u8 delivery_status:1; 91 __u8 polarity:1; 92 __u8 remote_irr:1; 93 __u8 trig_mode:1; 94 __u8 mask:1; 95 __u8 reserve:7; 96 __u8 reserved[4]; 97 __u8 dest_id; 98 } fields; 99 } redirtbl[KVM_IOAPIC_NUM_PINS]; 100 }; 101 102 #define KVM_IRQCHIP_PIC_MASTER 0 103 #define KVM_IRQCHIP_PIC_SLAVE 1 104 #define KVM_IRQCHIP_IOAPIC 2 105 #define KVM_NR_IRQCHIPS 3 106 107 #define KVM_RUN_X86_SMM (1 << 0) 108 #define KVM_RUN_X86_BUS_LOCK (1 << 1) 109 110 /* for KVM_GET_REGS and KVM_SET_REGS */ 111 struct kvm_regs { 112 /* out (KVM_GET_REGS) / in (KVM_SET_REGS) */ 113 __u64 rax, rbx, rcx, rdx; 114 __u64 rsi, rdi, rsp, rbp; 115 __u64 r8, r9, r10, r11; 116 __u64 r12, r13, r14, r15; 117 __u64 rip, rflags; 118 }; 119 120 /* for KVM_GET_LAPIC and KVM_SET_LAPIC */ 121 #define KVM_APIC_REG_SIZE 0x400 122 struct kvm_lapic_state { 123 char regs[KVM_APIC_REG_SIZE]; 124 }; 125 126 struct kvm_segment { 127 __u64 base; 128 __u32 limit; 129 __u16 selector; 130 __u8 type; 131 __u8 present, dpl, db, s, l, g, avl; 132 __u8 unusable; 133 __u8 padding; 134 }; 135 136 struct kvm_dtable { 137 __u64 base; 138 __u16 limit; 139 __u16 padding[3]; 140 }; 141 142 143 /* for KVM_GET_SREGS and KVM_SET_SREGS */ 144 struct kvm_sregs { 145 /* out (KVM_GET_SREGS) / in (KVM_SET_SREGS) */ 146 struct kvm_segment cs, ds, es, fs, gs, ss; 147 struct kvm_segment tr, ldt; 148 struct kvm_dtable gdt, idt; 149 __u64 cr0, cr2, cr3, cr4, cr8; 150 __u64 efer; 151 __u64 apic_base; 152 __u64 interrupt_bitmap[(KVM_NR_INTERRUPTS + 63) / 64]; 153 }; 154 155 struct kvm_sregs2 { 156 /* out (KVM_GET_SREGS2) / in (KVM_SET_SREGS2) */ 157 struct kvm_segment cs, ds, es, fs, gs, ss; 158 struct kvm_segment tr, ldt; 159 struct kvm_dtable gdt, idt; 160 __u64 cr0, cr2, cr3, cr4, cr8; 161 __u64 efer; 162 __u64 apic_base; 163 __u64 flags; 164 __u64 pdptrs[4]; 165 }; 166 #define KVM_SREGS2_FLAGS_PDPTRS_VALID 1 167 168 /* for KVM_GET_FPU and KVM_SET_FPU */ 169 struct kvm_fpu { 170 __u8 fpr[8][16]; 171 __u16 fcw; 172 __u16 fsw; 173 __u8 ftwx; /* in fxsave format */ 174 __u8 pad1; 175 __u16 last_opcode; 176 __u64 last_ip; 177 __u64 last_dp; 178 __u8 xmm[16][16]; 179 __u32 mxcsr; 180 __u32 pad2; 181 }; 182 183 struct kvm_msr_entry { 184 __u32 index; 185 __u32 reserved; 186 __u64 data; 187 }; 188 189 /* for KVM_GET_MSRS and KVM_SET_MSRS */ 190 struct kvm_msrs { 191 __u32 nmsrs; /* number of msrs in entries */ 192 __u32 pad; 193 194 struct kvm_msr_entry entries[]; 195 }; 196 197 /* for KVM_GET_MSR_INDEX_LIST */ 198 struct kvm_msr_list { 199 __u32 nmsrs; /* number of msrs in entries */ 200 __u32 indices[]; 201 }; 202 203 /* Maximum size of any access bitmap in bytes */ 204 #define KVM_MSR_FILTER_MAX_BITMAP_SIZE 0x600 205 206 /* for KVM_X86_SET_MSR_FILTER */ 207 struct kvm_msr_filter_range { 208 #define KVM_MSR_FILTER_READ (1 << 0) 209 #define KVM_MSR_FILTER_WRITE (1 << 1) 210 #define KVM_MSR_FILTER_RANGE_VALID_MASK (KVM_MSR_FILTER_READ | \ 211 KVM_MSR_FILTER_WRITE) 212 __u32 flags; 213 __u32 nmsrs; /* number of msrs in bitmap */ 214 __u32 base; /* MSR index the bitmap starts at */ 215 __u8 *bitmap; /* a 1 bit allows the operations in flags, 0 denies */ 216 }; 217 218 #define KVM_MSR_FILTER_MAX_RANGES 16 219 struct kvm_msr_filter { 220 #define KVM_MSR_FILTER_DEFAULT_ALLOW (0 << 0) 221 #define KVM_MSR_FILTER_DEFAULT_DENY (1 << 0) 222 #define KVM_MSR_FILTER_VALID_MASK (KVM_MSR_FILTER_DEFAULT_DENY) 223 __u32 flags; 224 struct kvm_msr_filter_range ranges[KVM_MSR_FILTER_MAX_RANGES]; 225 }; 226 227 struct kvm_cpuid_entry { 228 __u32 function; 229 __u32 eax; 230 __u32 ebx; 231 __u32 ecx; 232 __u32 edx; 233 __u32 padding; 234 }; 235 236 /* for KVM_SET_CPUID */ 237 struct kvm_cpuid { 238 __u32 nent; 239 __u32 padding; 240 struct kvm_cpuid_entry entries[]; 241 }; 242 243 struct kvm_cpuid_entry2 { 244 __u32 function; 245 __u32 index; 246 __u32 flags; 247 __u32 eax; 248 __u32 ebx; 249 __u32 ecx; 250 __u32 edx; 251 __u32 padding[3]; 252 }; 253 254 #define KVM_CPUID_FLAG_SIGNIFCANT_INDEX (1 << 0) 255 #define KVM_CPUID_FLAG_STATEFUL_FUNC (1 << 1) 256 #define KVM_CPUID_FLAG_STATE_READ_NEXT (1 << 2) 257 258 /* for KVM_SET_CPUID2 */ 259 struct kvm_cpuid2 { 260 __u32 nent; 261 __u32 padding; 262 struct kvm_cpuid_entry2 entries[]; 263 }; 264 265 /* for KVM_GET_PIT and KVM_SET_PIT */ 266 struct kvm_pit_channel_state { 267 __u32 count; /* can be 65536 */ 268 __u16 latched_count; 269 __u8 count_latched; 270 __u8 status_latched; 271 __u8 status; 272 __u8 read_state; 273 __u8 write_state; 274 __u8 write_latch; 275 __u8 rw_mode; 276 __u8 mode; 277 __u8 bcd; 278 __u8 gate; 279 __s64 count_load_time; 280 }; 281 282 struct kvm_debug_exit_arch { 283 __u32 exception; 284 __u32 pad; 285 __u64 pc; 286 __u64 dr6; 287 __u64 dr7; 288 }; 289 290 #define KVM_GUESTDBG_USE_SW_BP 0x00010000 291 #define KVM_GUESTDBG_USE_HW_BP 0x00020000 292 #define KVM_GUESTDBG_INJECT_DB 0x00040000 293 #define KVM_GUESTDBG_INJECT_BP 0x00080000 294 #define KVM_GUESTDBG_BLOCKIRQ 0x00100000 295 296 /* for KVM_SET_GUEST_DEBUG */ 297 struct kvm_guest_debug_arch { 298 __u64 debugreg[8]; 299 }; 300 301 struct kvm_pit_state { 302 struct kvm_pit_channel_state channels[3]; 303 }; 304 305 #define KVM_PIT_FLAGS_HPET_LEGACY 0x00000001 306 #define KVM_PIT_FLAGS_SPEAKER_DATA_ON 0x00000002 307 308 struct kvm_pit_state2 { 309 struct kvm_pit_channel_state channels[3]; 310 __u32 flags; 311 __u32 reserved[9]; 312 }; 313 314 struct kvm_reinject_control { 315 __u8 pit_reinject; 316 __u8 reserved[31]; 317 }; 318 319 /* When set in flags, include corresponding fields on KVM_SET_VCPU_EVENTS */ 320 #define KVM_VCPUEVENT_VALID_NMI_PENDING 0x00000001 321 #define KVM_VCPUEVENT_VALID_SIPI_VECTOR 0x00000002 322 #define KVM_VCPUEVENT_VALID_SHADOW 0x00000004 323 #define KVM_VCPUEVENT_VALID_SMM 0x00000008 324 #define KVM_VCPUEVENT_VALID_PAYLOAD 0x00000010 325 #define KVM_VCPUEVENT_VALID_TRIPLE_FAULT 0x00000020 326 327 /* Interrupt shadow states */ 328 #define KVM_X86_SHADOW_INT_MOV_SS 0x01 329 #define KVM_X86_SHADOW_INT_STI 0x02 330 331 /* for KVM_GET/SET_VCPU_EVENTS */ 332 struct kvm_vcpu_events { 333 struct { 334 __u8 injected; 335 __u8 nr; 336 __u8 has_error_code; 337 __u8 pending; 338 __u32 error_code; 339 } exception; 340 struct { 341 __u8 injected; 342 __u8 nr; 343 __u8 soft; 344 __u8 shadow; 345 } interrupt; 346 struct { 347 __u8 injected; 348 __u8 pending; 349 __u8 masked; 350 __u8 pad; 351 } nmi; 352 __u32 sipi_vector; 353 __u32 flags; 354 struct { 355 __u8 smm; 356 __u8 pending; 357 __u8 smm_inside_nmi; 358 __u8 latched_init; 359 } smi; 360 struct { 361 __u8 pending; 362 } triple_fault; 363 __u8 reserved[26]; 364 __u8 exception_has_payload; 365 __u64 exception_payload; 366 }; 367 368 /* for KVM_GET/SET_DEBUGREGS */ 369 struct kvm_debugregs { 370 __u64 db[4]; 371 __u64 dr6; 372 __u64 dr7; 373 __u64 flags; 374 __u64 reserved[9]; 375 }; 376 377 /* for KVM_CAP_XSAVE and KVM_CAP_XSAVE2 */ 378 struct kvm_xsave { 379 /* 380 * KVM_GET_XSAVE2 and KVM_SET_XSAVE write and read as many bytes 381 * as are returned by KVM_CHECK_EXTENSION(KVM_CAP_XSAVE2) 382 * respectively, when invoked on the vm file descriptor. 383 * 384 * The size value returned by KVM_CHECK_EXTENSION(KVM_CAP_XSAVE2) 385 * will always be at least 4096. Currently, it is only greater 386 * than 4096 if a dynamic feature has been enabled with 387 * ``arch_prctl()``, but this may change in the future. 388 * 389 * The offsets of the state save areas in struct kvm_xsave follow 390 * the contents of CPUID leaf 0xD on the host. 391 */ 392 __u32 region[1024]; 393 __u32 extra[]; 394 }; 395 396 #define KVM_MAX_XCRS 16 397 398 struct kvm_xcr { 399 __u32 xcr; 400 __u32 reserved; 401 __u64 value; 402 }; 403 404 struct kvm_xcrs { 405 __u32 nr_xcrs; 406 __u32 flags; 407 struct kvm_xcr xcrs[KVM_MAX_XCRS]; 408 __u64 padding[16]; 409 }; 410 411 #define KVM_SYNC_X86_REGS (1UL << 0) 412 #define KVM_SYNC_X86_SREGS (1UL << 1) 413 #define KVM_SYNC_X86_EVENTS (1UL << 2) 414 415 #define KVM_SYNC_X86_VALID_FIELDS \ 416 (KVM_SYNC_X86_REGS| \ 417 KVM_SYNC_X86_SREGS| \ 418 KVM_SYNC_X86_EVENTS) 419 420 /* kvm_sync_regs struct included by kvm_run struct */ 421 struct kvm_sync_regs { 422 /* Members of this structure are potentially malicious. 423 * Care must be taken by code reading, esp. interpreting, 424 * data fields from them inside KVM to prevent TOCTOU and 425 * double-fetch types of vulnerabilities. 426 */ 427 struct kvm_regs regs; 428 struct kvm_sregs sregs; 429 struct kvm_vcpu_events events; 430 }; 431 432 #define KVM_X86_QUIRK_LINT0_REENABLED (1 << 0) 433 #define KVM_X86_QUIRK_CD_NW_CLEARED (1 << 1) 434 #define KVM_X86_QUIRK_LAPIC_MMIO_HOLE (1 << 2) 435 #define KVM_X86_QUIRK_OUT_7E_INC_RIP (1 << 3) 436 #define KVM_X86_QUIRK_MISC_ENABLE_NO_MWAIT (1 << 4) 437 #define KVM_X86_QUIRK_FIX_HYPERCALL_INSN (1 << 5) 438 #define KVM_X86_QUIRK_MWAIT_NEVER_UD_FAULTS (1 << 6) 439 440 #define KVM_STATE_NESTED_FORMAT_VMX 0 441 #define KVM_STATE_NESTED_FORMAT_SVM 1 442 443 #define KVM_STATE_NESTED_GUEST_MODE 0x00000001 444 #define KVM_STATE_NESTED_RUN_PENDING 0x00000002 445 #define KVM_STATE_NESTED_EVMCS 0x00000004 446 #define KVM_STATE_NESTED_MTF_PENDING 0x00000008 447 #define KVM_STATE_NESTED_GIF_SET 0x00000100 448 449 #define KVM_STATE_NESTED_SMM_GUEST_MODE 0x00000001 450 #define KVM_STATE_NESTED_SMM_VMXON 0x00000002 451 452 #define KVM_STATE_NESTED_VMX_VMCS_SIZE 0x1000 453 454 #define KVM_STATE_NESTED_SVM_VMCB_SIZE 0x1000 455 456 #define KVM_STATE_VMX_PREEMPTION_TIMER_DEADLINE 0x00000001 457 458 /* attributes for system fd (group 0) */ 459 #define KVM_X86_XCOMP_GUEST_SUPP 0 460 461 struct kvm_vmx_nested_state_data { 462 __u8 vmcs12[KVM_STATE_NESTED_VMX_VMCS_SIZE]; 463 __u8 shadow_vmcs12[KVM_STATE_NESTED_VMX_VMCS_SIZE]; 464 }; 465 466 struct kvm_vmx_nested_state_hdr { 467 __u64 vmxon_pa; 468 __u64 vmcs12_pa; 469 470 struct { 471 __u16 flags; 472 } smm; 473 474 __u16 pad; 475 476 __u32 flags; 477 __u64 preemption_timer_deadline; 478 }; 479 480 struct kvm_svm_nested_state_data { 481 /* Save area only used if KVM_STATE_NESTED_RUN_PENDING. */ 482 __u8 vmcb12[KVM_STATE_NESTED_SVM_VMCB_SIZE]; 483 }; 484 485 struct kvm_svm_nested_state_hdr { 486 __u64 vmcb_pa; 487 }; 488 489 /* for KVM_CAP_NESTED_STATE */ 490 struct kvm_nested_state { 491 __u16 flags; 492 __u16 format; 493 __u32 size; 494 495 union { 496 struct kvm_vmx_nested_state_hdr vmx; 497 struct kvm_svm_nested_state_hdr svm; 498 499 /* Pad the header to 128 bytes. */ 500 __u8 pad[120]; 501 } hdr; 502 503 /* 504 * Define data region as 0 bytes to preserve backwards-compatability 505 * to old definition of kvm_nested_state in order to avoid changing 506 * KVM_{GET,PUT}_NESTED_STATE ioctl values. 507 */ 508 union { 509 __DECLARE_FLEX_ARRAY(struct kvm_vmx_nested_state_data, vmx); 510 __DECLARE_FLEX_ARRAY(struct kvm_svm_nested_state_data, svm); 511 } data; 512 }; 513 514 /* for KVM_CAP_PMU_EVENT_FILTER */ 515 struct kvm_pmu_event_filter { 516 __u32 action; 517 __u32 nevents; 518 __u32 fixed_counter_bitmap; 519 __u32 flags; 520 __u32 pad[4]; 521 __u64 events[]; 522 }; 523 524 #define KVM_PMU_EVENT_ALLOW 0 525 #define KVM_PMU_EVENT_DENY 1 526 527 #define KVM_PMU_EVENT_FLAG_MASKED_EVENTS BIT(0) 528 #define KVM_PMU_EVENT_FLAGS_VALID_MASK (KVM_PMU_EVENT_FLAG_MASKED_EVENTS) 529 530 /* 531 * Masked event layout. 532 * Bits Description 533 * ---- ----------- 534 * 7:0 event select (low bits) 535 * 15:8 umask match 536 * 31:16 unused 537 * 35:32 event select (high bits) 538 * 36:54 unused 539 * 55 exclude bit 540 * 63:56 umask mask 541 */ 542 543 #define KVM_PMU_ENCODE_MASKED_ENTRY(event_select, mask, match, exclude) \ 544 (((event_select) & 0xFFULL) | (((event_select) & 0XF00ULL) << 24) | \ 545 (((mask) & 0xFFULL) << 56) | \ 546 (((match) & 0xFFULL) << 8) | \ 547 ((__u64)(!!(exclude)) << 55)) 548 549 #define KVM_PMU_MASKED_ENTRY_EVENT_SELECT \ 550 (GENMASK_ULL(7, 0) | GENMASK_ULL(35, 32)) 551 #define KVM_PMU_MASKED_ENTRY_UMASK_MASK (GENMASK_ULL(63, 56)) 552 #define KVM_PMU_MASKED_ENTRY_UMASK_MATCH (GENMASK_ULL(15, 8)) 553 #define KVM_PMU_MASKED_ENTRY_EXCLUDE (BIT_ULL(55)) 554 #define KVM_PMU_MASKED_ENTRY_UMASK_MASK_SHIFT (56) 555 556 /* for KVM_{GET,SET,HAS}_DEVICE_ATTR */ 557 #define KVM_VCPU_TSC_CTRL 0 /* control group for the timestamp counter (TSC) */ 558 #define KVM_VCPU_TSC_OFFSET 0 /* attribute for the TSC offset */ 559 560 /* x86-specific KVM_EXIT_HYPERCALL flags. */ 561 #define KVM_EXIT_HYPERCALL_LONG_MODE BIT(0) 562 563 #endif /* _ASM_X86_KVM_H */ 564