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 #define KVM_RUN_X86_BUS_LOCK (1 << 1) 116 117 /* for KVM_GET_REGS and KVM_SET_REGS */ 118 struct kvm_regs { 119 /* out (KVM_GET_REGS) / in (KVM_SET_REGS) */ 120 __u64 rax, rbx, rcx, rdx; 121 __u64 rsi, rdi, rsp, rbp; 122 __u64 r8, r9, r10, r11; 123 __u64 r12, r13, r14, r15; 124 __u64 rip, rflags; 125 }; 126 127 /* for KVM_GET_LAPIC and KVM_SET_LAPIC */ 128 #define KVM_APIC_REG_SIZE 0x400 129 struct kvm_lapic_state { 130 char regs[KVM_APIC_REG_SIZE]; 131 }; 132 133 struct kvm_segment { 134 __u64 base; 135 __u32 limit; 136 __u16 selector; 137 __u8 type; 138 __u8 present, dpl, db, s, l, g, avl; 139 __u8 unusable; 140 __u8 padding; 141 }; 142 143 struct kvm_dtable { 144 __u64 base; 145 __u16 limit; 146 __u16 padding[3]; 147 }; 148 149 150 /* for KVM_GET_SREGS and KVM_SET_SREGS */ 151 struct kvm_sregs { 152 /* out (KVM_GET_SREGS) / in (KVM_SET_SREGS) */ 153 struct kvm_segment cs, ds, es, fs, gs, ss; 154 struct kvm_segment tr, ldt; 155 struct kvm_dtable gdt, idt; 156 __u64 cr0, cr2, cr3, cr4, cr8; 157 __u64 efer; 158 __u64 apic_base; 159 __u64 interrupt_bitmap[(KVM_NR_INTERRUPTS + 63) / 64]; 160 }; 161 162 /* for KVM_GET_FPU and KVM_SET_FPU */ 163 struct kvm_fpu { 164 __u8 fpr[8][16]; 165 __u16 fcw; 166 __u16 fsw; 167 __u8 ftwx; /* in fxsave format */ 168 __u8 pad1; 169 __u16 last_opcode; 170 __u64 last_ip; 171 __u64 last_dp; 172 __u8 xmm[16][16]; 173 __u32 mxcsr; 174 __u32 pad2; 175 }; 176 177 struct kvm_msr_entry { 178 __u32 index; 179 __u32 reserved; 180 __u64 data; 181 }; 182 183 /* for KVM_GET_MSRS and KVM_SET_MSRS */ 184 struct kvm_msrs { 185 __u32 nmsrs; /* number of msrs in entries */ 186 __u32 pad; 187 188 struct kvm_msr_entry entries[0]; 189 }; 190 191 /* for KVM_GET_MSR_INDEX_LIST */ 192 struct kvm_msr_list { 193 __u32 nmsrs; /* number of msrs in entries */ 194 __u32 indices[0]; 195 }; 196 197 /* Maximum size of any access bitmap in bytes */ 198 #define KVM_MSR_FILTER_MAX_BITMAP_SIZE 0x600 199 200 /* for KVM_X86_SET_MSR_FILTER */ 201 struct kvm_msr_filter_range { 202 #define KVM_MSR_FILTER_READ (1 << 0) 203 #define KVM_MSR_FILTER_WRITE (1 << 1) 204 __u32 flags; 205 __u32 nmsrs; /* number of msrs in bitmap */ 206 __u32 base; /* MSR index the bitmap starts at */ 207 __u8 *bitmap; /* a 1 bit allows the operations in flags, 0 denies */ 208 }; 209 210 #define KVM_MSR_FILTER_MAX_RANGES 16 211 struct kvm_msr_filter { 212 #define KVM_MSR_FILTER_DEFAULT_ALLOW (0 << 0) 213 #define KVM_MSR_FILTER_DEFAULT_DENY (1 << 0) 214 __u32 flags; 215 struct kvm_msr_filter_range ranges[KVM_MSR_FILTER_MAX_RANGES]; 216 }; 217 218 struct kvm_cpuid_entry { 219 __u32 function; 220 __u32 eax; 221 __u32 ebx; 222 __u32 ecx; 223 __u32 edx; 224 __u32 padding; 225 }; 226 227 /* for KVM_SET_CPUID */ 228 struct kvm_cpuid { 229 __u32 nent; 230 __u32 padding; 231 struct kvm_cpuid_entry entries[0]; 232 }; 233 234 struct kvm_cpuid_entry2 { 235 __u32 function; 236 __u32 index; 237 __u32 flags; 238 __u32 eax; 239 __u32 ebx; 240 __u32 ecx; 241 __u32 edx; 242 __u32 padding[3]; 243 }; 244 245 #define KVM_CPUID_FLAG_SIGNIFCANT_INDEX (1 << 0) 246 #define KVM_CPUID_FLAG_STATEFUL_FUNC (1 << 1) 247 #define KVM_CPUID_FLAG_STATE_READ_NEXT (1 << 2) 248 249 /* for KVM_SET_CPUID2 */ 250 struct kvm_cpuid2 { 251 __u32 nent; 252 __u32 padding; 253 struct kvm_cpuid_entry2 entries[0]; 254 }; 255 256 /* for KVM_GET_PIT and KVM_SET_PIT */ 257 struct kvm_pit_channel_state { 258 __u32 count; /* can be 65536 */ 259 __u16 latched_count; 260 __u8 count_latched; 261 __u8 status_latched; 262 __u8 status; 263 __u8 read_state; 264 __u8 write_state; 265 __u8 write_latch; 266 __u8 rw_mode; 267 __u8 mode; 268 __u8 bcd; 269 __u8 gate; 270 __s64 count_load_time; 271 }; 272 273 struct kvm_debug_exit_arch { 274 __u32 exception; 275 __u32 pad; 276 __u64 pc; 277 __u64 dr6; 278 __u64 dr7; 279 }; 280 281 #define KVM_GUESTDBG_USE_SW_BP 0x00010000 282 #define KVM_GUESTDBG_USE_HW_BP 0x00020000 283 #define KVM_GUESTDBG_INJECT_DB 0x00040000 284 #define KVM_GUESTDBG_INJECT_BP 0x00080000 285 286 /* for KVM_SET_GUEST_DEBUG */ 287 struct kvm_guest_debug_arch { 288 __u64 debugreg[8]; 289 }; 290 291 struct kvm_pit_state { 292 struct kvm_pit_channel_state channels[3]; 293 }; 294 295 #define KVM_PIT_FLAGS_HPET_LEGACY 0x00000001 296 297 struct kvm_pit_state2 { 298 struct kvm_pit_channel_state channels[3]; 299 __u32 flags; 300 __u32 reserved[9]; 301 }; 302 303 struct kvm_reinject_control { 304 __u8 pit_reinject; 305 __u8 reserved[31]; 306 }; 307 308 /* When set in flags, include corresponding fields on KVM_SET_VCPU_EVENTS */ 309 #define KVM_VCPUEVENT_VALID_NMI_PENDING 0x00000001 310 #define KVM_VCPUEVENT_VALID_SIPI_VECTOR 0x00000002 311 #define KVM_VCPUEVENT_VALID_SHADOW 0x00000004 312 #define KVM_VCPUEVENT_VALID_SMM 0x00000008 313 #define KVM_VCPUEVENT_VALID_PAYLOAD 0x00000010 314 315 /* Interrupt shadow states */ 316 #define KVM_X86_SHADOW_INT_MOV_SS 0x01 317 #define KVM_X86_SHADOW_INT_STI 0x02 318 319 /* for KVM_GET/SET_VCPU_EVENTS */ 320 struct kvm_vcpu_events { 321 struct { 322 __u8 injected; 323 __u8 nr; 324 __u8 has_error_code; 325 __u8 pending; 326 __u32 error_code; 327 } exception; 328 struct { 329 __u8 injected; 330 __u8 nr; 331 __u8 soft; 332 __u8 shadow; 333 } interrupt; 334 struct { 335 __u8 injected; 336 __u8 pending; 337 __u8 masked; 338 __u8 pad; 339 } nmi; 340 __u32 sipi_vector; 341 __u32 flags; 342 struct { 343 __u8 smm; 344 __u8 pending; 345 __u8 smm_inside_nmi; 346 __u8 latched_init; 347 } smi; 348 __u8 reserved[27]; 349 __u8 exception_has_payload; 350 __u64 exception_payload; 351 }; 352 353 /* for KVM_GET/SET_DEBUGREGS */ 354 struct kvm_debugregs { 355 __u64 db[4]; 356 __u64 dr6; 357 __u64 dr7; 358 __u64 flags; 359 __u64 reserved[9]; 360 }; 361 362 /* for KVM_CAP_XSAVE */ 363 struct kvm_xsave { 364 __u32 region[1024]; 365 }; 366 367 #define KVM_MAX_XCRS 16 368 369 struct kvm_xcr { 370 __u32 xcr; 371 __u32 reserved; 372 __u64 value; 373 }; 374 375 struct kvm_xcrs { 376 __u32 nr_xcrs; 377 __u32 flags; 378 struct kvm_xcr xcrs[KVM_MAX_XCRS]; 379 __u64 padding[16]; 380 }; 381 382 #define KVM_SYNC_X86_REGS (1UL << 0) 383 #define KVM_SYNC_X86_SREGS (1UL << 1) 384 #define KVM_SYNC_X86_EVENTS (1UL << 2) 385 386 #define KVM_SYNC_X86_VALID_FIELDS \ 387 (KVM_SYNC_X86_REGS| \ 388 KVM_SYNC_X86_SREGS| \ 389 KVM_SYNC_X86_EVENTS) 390 391 /* kvm_sync_regs struct included by kvm_run struct */ 392 struct kvm_sync_regs { 393 /* Members of this structure are potentially malicious. 394 * Care must be taken by code reading, esp. interpreting, 395 * data fields from them inside KVM to prevent TOCTOU and 396 * double-fetch types of vulnerabilities. 397 */ 398 struct kvm_regs regs; 399 struct kvm_sregs sregs; 400 struct kvm_vcpu_events events; 401 }; 402 403 #define KVM_X86_QUIRK_LINT0_REENABLED (1 << 0) 404 #define KVM_X86_QUIRK_CD_NW_CLEARED (1 << 1) 405 #define KVM_X86_QUIRK_LAPIC_MMIO_HOLE (1 << 2) 406 #define KVM_X86_QUIRK_OUT_7E_INC_RIP (1 << 3) 407 #define KVM_X86_QUIRK_MISC_ENABLE_NO_MWAIT (1 << 4) 408 409 #define KVM_STATE_NESTED_FORMAT_VMX 0 410 #define KVM_STATE_NESTED_FORMAT_SVM 1 411 412 #define KVM_STATE_NESTED_GUEST_MODE 0x00000001 413 #define KVM_STATE_NESTED_RUN_PENDING 0x00000002 414 #define KVM_STATE_NESTED_EVMCS 0x00000004 415 #define KVM_STATE_NESTED_MTF_PENDING 0x00000008 416 #define KVM_STATE_NESTED_GIF_SET 0x00000100 417 418 #define KVM_STATE_NESTED_SMM_GUEST_MODE 0x00000001 419 #define KVM_STATE_NESTED_SMM_VMXON 0x00000002 420 421 #define KVM_STATE_NESTED_VMX_VMCS_SIZE 0x1000 422 423 #define KVM_STATE_NESTED_SVM_VMCB_SIZE 0x1000 424 425 #define KVM_STATE_VMX_PREEMPTION_TIMER_DEADLINE 0x00000001 426 427 struct kvm_vmx_nested_state_data { 428 __u8 vmcs12[KVM_STATE_NESTED_VMX_VMCS_SIZE]; 429 __u8 shadow_vmcs12[KVM_STATE_NESTED_VMX_VMCS_SIZE]; 430 }; 431 432 struct kvm_vmx_nested_state_hdr { 433 __u64 vmxon_pa; 434 __u64 vmcs12_pa; 435 436 struct { 437 __u16 flags; 438 } smm; 439 440 __u16 pad; 441 442 __u32 flags; 443 __u64 preemption_timer_deadline; 444 }; 445 446 struct kvm_svm_nested_state_data { 447 /* Save area only used if KVM_STATE_NESTED_RUN_PENDING. */ 448 __u8 vmcb12[KVM_STATE_NESTED_SVM_VMCB_SIZE]; 449 }; 450 451 struct kvm_svm_nested_state_hdr { 452 __u64 vmcb_pa; 453 }; 454 455 /* for KVM_CAP_NESTED_STATE */ 456 struct kvm_nested_state { 457 __u16 flags; 458 __u16 format; 459 __u32 size; 460 461 union { 462 struct kvm_vmx_nested_state_hdr vmx; 463 struct kvm_svm_nested_state_hdr svm; 464 465 /* Pad the header to 128 bytes. */ 466 __u8 pad[120]; 467 } hdr; 468 469 /* 470 * Define data region as 0 bytes to preserve backwards-compatability 471 * to old definition of kvm_nested_state in order to avoid changing 472 * KVM_{GET,PUT}_NESTED_STATE ioctl values. 473 */ 474 union { 475 struct kvm_vmx_nested_state_data vmx[0]; 476 struct kvm_svm_nested_state_data svm[0]; 477 } data; 478 }; 479 480 /* for KVM_CAP_PMU_EVENT_FILTER */ 481 struct kvm_pmu_event_filter { 482 __u32 action; 483 __u32 nevents; 484 __u32 fixed_counter_bitmap; 485 __u32 flags; 486 __u32 pad[4]; 487 __u64 events[0]; 488 }; 489 490 #define KVM_PMU_EVENT_ALLOW 0 491 #define KVM_PMU_EVENT_DENY 1 492 493 #endif /* _ASM_X86_KVM_H */ 494