Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/amd64/include/vmm.h
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1 /*- 2 * Copyright (c) 2011 NetApp, Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: releng/10.2/sys/amd64/include/vmm.h 284900 2015-06-28 03:22:26Z neel $ 27 */ 28 29 #ifndef _VMM_H_ 30 #define _VMM_H_ 31 32 #include <x86/segments.h> 33 34 enum vm_suspend_how { 35 VM_SUSPEND_NONE, 36 VM_SUSPEND_RESET, 37 VM_SUSPEND_POWEROFF, 38 VM_SUSPEND_HALT, 39 VM_SUSPEND_TRIPLEFAULT, 40 VM_SUSPEND_LAST 41 }; 42 43 /* 44 * Identifiers for architecturally defined registers. 45 */ 46 enum vm_reg_name { 47 VM_REG_GUEST_RAX, 48 VM_REG_GUEST_RBX, 49 VM_REG_GUEST_RCX, 50 VM_REG_GUEST_RDX, 51 VM_REG_GUEST_RSI, 52 VM_REG_GUEST_RDI, 53 VM_REG_GUEST_RBP, 54 VM_REG_GUEST_R8, 55 VM_REG_GUEST_R9, 56 VM_REG_GUEST_R10, 57 VM_REG_GUEST_R11, 58 VM_REG_GUEST_R12, 59 VM_REG_GUEST_R13, 60 VM_REG_GUEST_R14, 61 VM_REG_GUEST_R15, 62 VM_REG_GUEST_CR0, 63 VM_REG_GUEST_CR3, 64 VM_REG_GUEST_CR4, 65 VM_REG_GUEST_DR7, 66 VM_REG_GUEST_RSP, 67 VM_REG_GUEST_RIP, 68 VM_REG_GUEST_RFLAGS, 69 VM_REG_GUEST_ES, 70 VM_REG_GUEST_CS, 71 VM_REG_GUEST_SS, 72 VM_REG_GUEST_DS, 73 VM_REG_GUEST_FS, 74 VM_REG_GUEST_GS, 75 VM_REG_GUEST_LDTR, 76 VM_REG_GUEST_TR, 77 VM_REG_GUEST_IDTR, 78 VM_REG_GUEST_GDTR, 79 VM_REG_GUEST_EFER, 80 VM_REG_GUEST_CR2, 81 VM_REG_GUEST_PDPTE0, 82 VM_REG_GUEST_PDPTE1, 83 VM_REG_GUEST_PDPTE2, 84 VM_REG_GUEST_PDPTE3, 85 VM_REG_GUEST_INTR_SHADOW, 86 VM_REG_LAST 87 }; 88 89 enum x2apic_state { 90 X2APIC_DISABLED, 91 X2APIC_ENABLED, 92 X2APIC_STATE_LAST 93 }; 94 95 #define VM_INTINFO_VECTOR(info) ((info) & 0xff) 96 #define VM_INTINFO_DEL_ERRCODE 0x800 97 #define VM_INTINFO_RSVD 0x7ffff000 98 #define VM_INTINFO_VALID 0x80000000 99 #define VM_INTINFO_TYPE 0x700 100 #define VM_INTINFO_HWINTR (0 << 8) 101 #define VM_INTINFO_NMI (2 << 8) 102 #define VM_INTINFO_HWEXCEPTION (3 << 8) 103 #define VM_INTINFO_SWINTR (4 << 8) 104 105 #ifdef _KERNEL 106 107 #define VM_MAX_NAMELEN 32 108 109 struct vm; 110 struct vm_exception; 111 struct vm_memory_segment; 112 struct seg_desc; 113 struct vm_exit; 114 struct vm_run; 115 struct vhpet; 116 struct vioapic; 117 struct vlapic; 118 struct vmspace; 119 struct vm_object; 120 struct vm_guest_paging; 121 struct pmap; 122 123 struct vm_eventinfo { 124 void *rptr; /* rendezvous cookie */ 125 int *sptr; /* suspend cookie */ 126 int *iptr; /* reqidle cookie */ 127 }; 128 129 typedef int (*vmm_init_func_t)(int ipinum); 130 typedef int (*vmm_cleanup_func_t)(void); 131 typedef void (*vmm_resume_func_t)(void); 132 typedef void * (*vmi_init_func_t)(struct vm *vm, struct pmap *pmap); 133 typedef int (*vmi_run_func_t)(void *vmi, int vcpu, register_t rip, 134 struct pmap *pmap, struct vm_eventinfo *info); 135 typedef void (*vmi_cleanup_func_t)(void *vmi); 136 typedef int (*vmi_get_register_t)(void *vmi, int vcpu, int num, 137 uint64_t *retval); 138 typedef int (*vmi_set_register_t)(void *vmi, int vcpu, int num, 139 uint64_t val); 140 typedef int (*vmi_get_desc_t)(void *vmi, int vcpu, int num, 141 struct seg_desc *desc); 142 typedef int (*vmi_set_desc_t)(void *vmi, int vcpu, int num, 143 struct seg_desc *desc); 144 typedef int (*vmi_get_cap_t)(void *vmi, int vcpu, int num, int *retval); 145 typedef int (*vmi_set_cap_t)(void *vmi, int vcpu, int num, int val); 146 typedef struct vmspace * (*vmi_vmspace_alloc)(vm_offset_t min, vm_offset_t max); 147 typedef void (*vmi_vmspace_free)(struct vmspace *vmspace); 148 typedef struct vlapic * (*vmi_vlapic_init)(void *vmi, int vcpu); 149 typedef void (*vmi_vlapic_cleanup)(void *vmi, struct vlapic *vlapic); 150 151 struct vmm_ops { 152 vmm_init_func_t init; /* module wide initialization */ 153 vmm_cleanup_func_t cleanup; 154 vmm_resume_func_t resume; 155 156 vmi_init_func_t vminit; /* vm-specific initialization */ 157 vmi_run_func_t vmrun; 158 vmi_cleanup_func_t vmcleanup; 159 vmi_get_register_t vmgetreg; 160 vmi_set_register_t vmsetreg; 161 vmi_get_desc_t vmgetdesc; 162 vmi_set_desc_t vmsetdesc; 163 vmi_get_cap_t vmgetcap; 164 vmi_set_cap_t vmsetcap; 165 vmi_vmspace_alloc vmspace_alloc; 166 vmi_vmspace_free vmspace_free; 167 vmi_vlapic_init vlapic_init; 168 vmi_vlapic_cleanup vlapic_cleanup; 169 }; 170 171 extern struct vmm_ops vmm_ops_intel; 172 extern struct vmm_ops vmm_ops_amd; 173 174 int vm_create(const char *name, struct vm **retvm); 175 void vm_destroy(struct vm *vm); 176 int vm_reinit(struct vm *vm); 177 const char *vm_name(struct vm *vm); 178 int vm_malloc(struct vm *vm, vm_paddr_t gpa, size_t len); 179 int vm_map_mmio(struct vm *vm, vm_paddr_t gpa, size_t len, vm_paddr_t hpa); 180 int vm_unmap_mmio(struct vm *vm, vm_paddr_t gpa, size_t len); 181 void *vm_gpa_hold(struct vm *, vm_paddr_t gpa, size_t len, int prot, 182 void **cookie); 183 void vm_gpa_release(void *cookie); 184 int vm_gpabase2memseg(struct vm *vm, vm_paddr_t gpabase, 185 struct vm_memory_segment *seg); 186 int vm_get_memobj(struct vm *vm, vm_paddr_t gpa, size_t len, 187 vm_offset_t *offset, struct vm_object **object); 188 boolean_t vm_mem_allocated(struct vm *vm, vm_paddr_t gpa); 189 int vm_get_register(struct vm *vm, int vcpu, int reg, uint64_t *retval); 190 int vm_set_register(struct vm *vm, int vcpu, int reg, uint64_t val); 191 int vm_get_seg_desc(struct vm *vm, int vcpu, int reg, 192 struct seg_desc *ret_desc); 193 int vm_set_seg_desc(struct vm *vm, int vcpu, int reg, 194 struct seg_desc *desc); 195 int vm_run(struct vm *vm, struct vm_run *vmrun); 196 int vm_suspend(struct vm *vm, enum vm_suspend_how how); 197 int vm_inject_nmi(struct vm *vm, int vcpu); 198 int vm_nmi_pending(struct vm *vm, int vcpuid); 199 void vm_nmi_clear(struct vm *vm, int vcpuid); 200 int vm_inject_extint(struct vm *vm, int vcpu); 201 int vm_extint_pending(struct vm *vm, int vcpuid); 202 void vm_extint_clear(struct vm *vm, int vcpuid); 203 struct vlapic *vm_lapic(struct vm *vm, int cpu); 204 struct vioapic *vm_ioapic(struct vm *vm); 205 struct vhpet *vm_hpet(struct vm *vm); 206 int vm_get_capability(struct vm *vm, int vcpu, int type, int *val); 207 int vm_set_capability(struct vm *vm, int vcpu, int type, int val); 208 int vm_get_x2apic_state(struct vm *vm, int vcpu, enum x2apic_state *state); 209 int vm_set_x2apic_state(struct vm *vm, int vcpu, enum x2apic_state state); 210 int vm_apicid2vcpuid(struct vm *vm, int apicid); 211 int vm_activate_cpu(struct vm *vm, int vcpu); 212 struct vm_exit *vm_exitinfo(struct vm *vm, int vcpuid); 213 void vm_exit_suspended(struct vm *vm, int vcpuid, uint64_t rip); 214 void vm_exit_rendezvous(struct vm *vm, int vcpuid, uint64_t rip); 215 void vm_exit_astpending(struct vm *vm, int vcpuid, uint64_t rip); 216 void vm_exit_reqidle(struct vm *vm, int vcpuid, uint64_t rip); 217 218 #ifdef _SYS__CPUSET_H_ 219 /* 220 * Rendezvous all vcpus specified in 'dest' and execute 'func(arg)'. 221 * The rendezvous 'func(arg)' is not allowed to do anything that will 222 * cause the thread to be put to sleep. 223 * 224 * If the rendezvous is being initiated from a vcpu context then the 225 * 'vcpuid' must refer to that vcpu, otherwise it should be set to -1. 226 * 227 * The caller cannot hold any locks when initiating the rendezvous. 228 * 229 * The implementation of this API may cause vcpus other than those specified 230 * by 'dest' to be stalled. The caller should not rely on any vcpus making 231 * forward progress when the rendezvous is in progress. 232 */ 233 typedef void (*vm_rendezvous_func_t)(struct vm *vm, int vcpuid, void *arg); 234 void vm_smp_rendezvous(struct vm *vm, int vcpuid, cpuset_t dest, 235 vm_rendezvous_func_t func, void *arg); 236 cpuset_t vm_active_cpus(struct vm *vm); 237 cpuset_t vm_suspended_cpus(struct vm *vm); 238 #endif /* _SYS__CPUSET_H_ */ 239 240 static __inline int 241 vcpu_rendezvous_pending(struct vm_eventinfo *info) 242 { 243 244 return (*((uintptr_t *)(info->rptr)) != 0); 245 } 246 247 static __inline int 248 vcpu_suspended(struct vm_eventinfo *info) 249 { 250 251 return (*info->sptr); 252 } 253 254 static __inline int 255 vcpu_reqidle(struct vm_eventinfo *info) 256 { 257 258 return (*info->iptr); 259 } 260 261 /* 262 * Return 1 if device indicated by bus/slot/func is supposed to be a 263 * pci passthrough device. 264 * 265 * Return 0 otherwise. 266 */ 267 int vmm_is_pptdev(int bus, int slot, int func); 268 269 void *vm_iommu_domain(struct vm *vm); 270 271 enum vcpu_state { 272 VCPU_IDLE, 273 VCPU_FROZEN, 274 VCPU_RUNNING, 275 VCPU_SLEEPING, 276 }; 277 278 int vcpu_set_state(struct vm *vm, int vcpu, enum vcpu_state state, 279 bool from_idle); 280 enum vcpu_state vcpu_get_state(struct vm *vm, int vcpu, int *hostcpu); 281 282 static int __inline 283 vcpu_is_running(struct vm *vm, int vcpu, int *hostcpu) 284 { 285 return (vcpu_get_state(vm, vcpu, hostcpu) == VCPU_RUNNING); 286 } 287 288 #ifdef _SYS_PROC_H_ 289 static int __inline 290 vcpu_should_yield(struct vm *vm, int vcpu) 291 { 292 293 if (curthread->td_flags & (TDF_ASTPENDING | TDF_NEEDRESCHED)) 294 return (1); 295 else if (curthread->td_owepreempt) 296 return (1); 297 else 298 return (0); 299 } 300 #endif 301 302 void *vcpu_stats(struct vm *vm, int vcpu); 303 void vcpu_notify_event(struct vm *vm, int vcpuid, bool lapic_intr); 304 struct vmspace *vm_get_vmspace(struct vm *vm); 305 int vm_assign_pptdev(struct vm *vm, int bus, int slot, int func); 306 int vm_unassign_pptdev(struct vm *vm, int bus, int slot, int func); 307 struct vatpic *vm_atpic(struct vm *vm); 308 struct vatpit *vm_atpit(struct vm *vm); 309 struct vpmtmr *vm_pmtmr(struct vm *vm); 310 struct vrtc *vm_rtc(struct vm *vm); 311 312 /* 313 * Inject exception 'vector' into the guest vcpu. This function returns 0 on 314 * success and non-zero on failure. 315 * 316 * Wrapper functions like 'vm_inject_gp()' should be preferred to calling 317 * this function directly because they enforce the trap-like or fault-like 318 * behavior of an exception. 319 * 320 * This function should only be called in the context of the thread that is 321 * executing this vcpu. 322 */ 323 int vm_inject_exception(struct vm *vm, int vcpuid, int vector, int err_valid, 324 uint32_t errcode, int restart_instruction); 325 326 /* 327 * This function is called after a VM-exit that occurred during exception or 328 * interrupt delivery through the IDT. The format of 'intinfo' is described 329 * in Figure 15-1, "EXITINTINFO for All Intercepts", APM, Vol 2. 330 * 331 * If a VM-exit handler completes the event delivery successfully then it 332 * should call vm_exit_intinfo() to extinguish the pending event. For e.g., 333 * if the task switch emulation is triggered via a task gate then it should 334 * call this function with 'intinfo=0' to indicate that the external event 335 * is not pending anymore. 336 * 337 * Return value is 0 on success and non-zero on failure. 338 */ 339 int vm_exit_intinfo(struct vm *vm, int vcpuid, uint64_t intinfo); 340 341 /* 342 * This function is called before every VM-entry to retrieve a pending 343 * event that should be injected into the guest. This function combines 344 * nested events into a double or triple fault. 345 * 346 * Returns 0 if there are no events that need to be injected into the guest 347 * and non-zero otherwise. 348 */ 349 int vm_entry_intinfo(struct vm *vm, int vcpuid, uint64_t *info); 350 351 int vm_get_intinfo(struct vm *vm, int vcpuid, uint64_t *info1, uint64_t *info2); 352 353 enum vm_reg_name vm_segment_name(int seg_encoding); 354 355 struct vm_copyinfo { 356 uint64_t gpa; 357 size_t len; 358 void *hva; 359 void *cookie; 360 }; 361 362 /* 363 * Set up 'copyinfo[]' to copy to/from guest linear address space starting 364 * at 'gla' and 'len' bytes long. The 'prot' should be set to PROT_READ for 365 * a copyin or PROT_WRITE for a copyout. 366 * 367 * retval is_fault Intepretation 368 * 0 0 Success 369 * 0 1 An exception was injected into the guest 370 * EFAULT N/A Unrecoverable error 371 * 372 * The 'copyinfo[]' can be passed to 'vm_copyin()' or 'vm_copyout()' only if 373 * the return value is 0. The 'copyinfo[]' resources should be freed by calling 374 * 'vm_copy_teardown()' after the copy is done. 375 */ 376 int vm_copy_setup(struct vm *vm, int vcpuid, struct vm_guest_paging *paging, 377 uint64_t gla, size_t len, int prot, struct vm_copyinfo *copyinfo, 378 int num_copyinfo, int *is_fault); 379 void vm_copy_teardown(struct vm *vm, int vcpuid, struct vm_copyinfo *copyinfo, 380 int num_copyinfo); 381 void vm_copyin(struct vm *vm, int vcpuid, struct vm_copyinfo *copyinfo, 382 void *kaddr, size_t len); 383 void vm_copyout(struct vm *vm, int vcpuid, const void *kaddr, 384 struct vm_copyinfo *copyinfo, size_t len); 385 386 int vcpu_trace_exceptions(struct vm *vm, int vcpuid); 387 #endif /* KERNEL */ 388 389 #define VM_MAXCPU 16 /* maximum virtual cpus */ 390 391 /* 392 * Identifiers for optional vmm capabilities 393 */ 394 enum vm_cap_type { 395 VM_CAP_HALT_EXIT, 396 VM_CAP_MTRAP_EXIT, 397 VM_CAP_PAUSE_EXIT, 398 VM_CAP_UNRESTRICTED_GUEST, 399 VM_CAP_ENABLE_INVPCID, 400 VM_CAP_MAX 401 }; 402 403 enum vm_intr_trigger { 404 EDGE_TRIGGER, 405 LEVEL_TRIGGER 406 }; 407 408 /* 409 * The 'access' field has the format specified in Table 21-2 of the Intel 410 * Architecture Manual vol 3b. 411 * 412 * XXX The contents of the 'access' field are architecturally defined except 413 * bit 16 - Segment Unusable. 414 */ 415 struct seg_desc { 416 uint64_t base; 417 uint32_t limit; 418 uint32_t access; 419 }; 420 #define SEG_DESC_TYPE(access) ((access) & 0x001f) 421 #define SEG_DESC_DPL(access) (((access) >> 5) & 0x3) 422 #define SEG_DESC_PRESENT(access) (((access) & 0x0080) ? 1 : 0) 423 #define SEG_DESC_DEF32(access) (((access) & 0x4000) ? 1 : 0) 424 #define SEG_DESC_GRANULARITY(access) (((access) & 0x8000) ? 1 : 0) 425 #define SEG_DESC_UNUSABLE(access) (((access) & 0x10000) ? 1 : 0) 426 427 enum vm_cpu_mode { 428 CPU_MODE_REAL, 429 CPU_MODE_PROTECTED, 430 CPU_MODE_COMPATIBILITY, /* IA-32E mode (CS.L = 0) */ 431 CPU_MODE_64BIT, /* IA-32E mode (CS.L = 1) */ 432 }; 433 434 enum vm_paging_mode { 435 PAGING_MODE_FLAT, 436 PAGING_MODE_32, 437 PAGING_MODE_PAE, 438 PAGING_MODE_64, 439 }; 440 441 struct vm_guest_paging { 442 uint64_t cr3; 443 int cpl; 444 enum vm_cpu_mode cpu_mode; 445 enum vm_paging_mode paging_mode; 446 }; 447 448 /* 449 * The data structures 'vie' and 'vie_op' are meant to be opaque to the 450 * consumers of instruction decoding. The only reason why their contents 451 * need to be exposed is because they are part of the 'vm_exit' structure. 452 */ 453 struct vie_op { 454 uint8_t op_byte; /* actual opcode byte */ 455 uint8_t op_type; /* type of operation (e.g. MOV) */ 456 uint16_t op_flags; 457 }; 458 459 #define VIE_INST_SIZE 15 460 struct vie { 461 uint8_t inst[VIE_INST_SIZE]; /* instruction bytes */ 462 uint8_t num_valid; /* size of the instruction */ 463 uint8_t num_processed; 464 465 uint8_t addrsize:4, opsize:4; /* address and operand sizes */ 466 uint8_t rex_w:1, /* REX prefix */ 467 rex_r:1, 468 rex_x:1, 469 rex_b:1, 470 rex_present:1, 471 repz_present:1, /* REP/REPE/REPZ prefix */ 472 repnz_present:1, /* REPNE/REPNZ prefix */ 473 opsize_override:1, /* Operand size override */ 474 addrsize_override:1, /* Address size override */ 475 segment_override:1; /* Segment override */ 476 477 uint8_t mod:2, /* ModRM byte */ 478 reg:4, 479 rm:4; 480 481 uint8_t ss:2, /* SIB byte */ 482 index:4, 483 base:4; 484 485 uint8_t disp_bytes; 486 uint8_t imm_bytes; 487 488 uint8_t scale; 489 int base_register; /* VM_REG_GUEST_xyz */ 490 int index_register; /* VM_REG_GUEST_xyz */ 491 int segment_register; /* VM_REG_GUEST_xyz */ 492 493 int64_t displacement; /* optional addr displacement */ 494 int64_t immediate; /* optional immediate operand */ 495 496 uint8_t decoded; /* set to 1 if successfully decoded */ 497 498 struct vie_op op; /* opcode description */ 499 }; 500 501 enum vm_exitcode { 502 VM_EXITCODE_INOUT, 503 VM_EXITCODE_VMX, 504 VM_EXITCODE_BOGUS, 505 VM_EXITCODE_RDMSR, 506 VM_EXITCODE_WRMSR, 507 VM_EXITCODE_HLT, 508 VM_EXITCODE_MTRAP, 509 VM_EXITCODE_PAUSE, 510 VM_EXITCODE_PAGING, 511 VM_EXITCODE_INST_EMUL, 512 VM_EXITCODE_SPINUP_AP, 513 VM_EXITCODE_DEPRECATED1, /* used to be SPINDOWN_CPU */ 514 VM_EXITCODE_RENDEZVOUS, 515 VM_EXITCODE_IOAPIC_EOI, 516 VM_EXITCODE_SUSPENDED, 517 VM_EXITCODE_INOUT_STR, 518 VM_EXITCODE_TASK_SWITCH, 519 VM_EXITCODE_MONITOR, 520 VM_EXITCODE_MWAIT, 521 VM_EXITCODE_SVM, 522 VM_EXITCODE_REQIDLE, 523 VM_EXITCODE_MAX 524 }; 525 526 struct vm_inout { 527 uint16_t bytes:3; /* 1 or 2 or 4 */ 528 uint16_t in:1; 529 uint16_t string:1; 530 uint16_t rep:1; 531 uint16_t port; 532 uint32_t eax; /* valid for out */ 533 }; 534 535 struct vm_inout_str { 536 struct vm_inout inout; /* must be the first element */ 537 struct vm_guest_paging paging; 538 uint64_t rflags; 539 uint64_t cr0; 540 uint64_t index; 541 uint64_t count; /* rep=1 (%rcx), rep=0 (1) */ 542 int addrsize; 543 enum vm_reg_name seg_name; 544 struct seg_desc seg_desc; 545 }; 546 547 enum task_switch_reason { 548 TSR_CALL, 549 TSR_IRET, 550 TSR_JMP, 551 TSR_IDT_GATE, /* task gate in IDT */ 552 }; 553 554 struct vm_task_switch { 555 uint16_t tsssel; /* new TSS selector */ 556 int ext; /* task switch due to external event */ 557 uint32_t errcode; 558 int errcode_valid; /* push 'errcode' on the new stack */ 559 enum task_switch_reason reason; 560 struct vm_guest_paging paging; 561 }; 562 563 struct vm_exit { 564 enum vm_exitcode exitcode; 565 int inst_length; /* 0 means unknown */ 566 uint64_t rip; 567 union { 568 struct vm_inout inout; 569 struct vm_inout_str inout_str; 570 struct { 571 uint64_t gpa; 572 int fault_type; 573 } paging; 574 struct { 575 uint64_t gpa; 576 uint64_t gla; 577 uint64_t cs_base; 578 int cs_d; /* CS.D */ 579 struct vm_guest_paging paging; 580 struct vie vie; 581 } inst_emul; 582 /* 583 * VMX specific payload. Used when there is no "better" 584 * exitcode to represent the VM-exit. 585 */ 586 struct { 587 int status; /* vmx inst status */ 588 /* 589 * 'exit_reason' and 'exit_qualification' are valid 590 * only if 'status' is zero. 591 */ 592 uint32_t exit_reason; 593 uint64_t exit_qualification; 594 /* 595 * 'inst_error' and 'inst_type' are valid 596 * only if 'status' is non-zero. 597 */ 598 int inst_type; 599 int inst_error; 600 } vmx; 601 /* 602 * SVM specific payload. 603 */ 604 struct { 605 uint64_t exitcode; 606 uint64_t exitinfo1; 607 uint64_t exitinfo2; 608 } svm; 609 struct { 610 uint32_t code; /* ecx value */ 611 uint64_t wval; 612 } msr; 613 struct { 614 int vcpu; 615 uint64_t rip; 616 } spinup_ap; 617 struct { 618 uint64_t rflags; 619 } hlt; 620 struct { 621 int vector; 622 } ioapic_eoi; 623 struct { 624 enum vm_suspend_how how; 625 } suspended; 626 struct vm_task_switch task_switch; 627 } u; 628 }; 629 630 /* APIs to inject faults into the guest */ 631 void vm_inject_fault(void *vm, int vcpuid, int vector, int errcode_valid, 632 int errcode); 633 634 static __inline void 635 vm_inject_ud(void *vm, int vcpuid) 636 { 637 vm_inject_fault(vm, vcpuid, IDT_UD, 0, 0); 638 } 639 640 static __inline void 641 vm_inject_gp(void *vm, int vcpuid) 642 { 643 vm_inject_fault(vm, vcpuid, IDT_GP, 1, 0); 644 } 645 646 static __inline void 647 vm_inject_ac(void *vm, int vcpuid, int errcode) 648 { 649 vm_inject_fault(vm, vcpuid, IDT_AC, 1, errcode); 650 } 651 652 static __inline void 653 vm_inject_ss(void *vm, int vcpuid, int errcode) 654 { 655 vm_inject_fault(vm, vcpuid, IDT_SS, 1, errcode); 656 } 657 658 void vm_inject_pf(void *vm, int vcpuid, int error_code, uint64_t cr2); 659 660 int vm_restart_instruction(void *vm, int vcpuid); 661 662 #endif /* _VMM_H_ */
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