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 */ 424