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 * $FreeBSD$ 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include <sys/types.h> 33 #include <sys/sysctl.h> 34 #include <sys/ioctl.h> 35 #include <sys/mman.h> 36 37 #include <machine/specialreg.h> 38 39 #include <stdio.h> 40 #include <stdlib.h> 41 #include <assert.h> 42 #include <string.h> 43 #include <fcntl.h> 44 #include <unistd.h> 45 46 #include <libutil.h> 47 48 #include <machine/vmm.h> 49 #include <machine/vmm_dev.h> 50 51 #include "vmmapi.h" 52 53 #define MB (1024 * 1024UL) 54 #define GB (1024 * 1024 * 1024UL) 55 56 struct vmctx { 57 int fd; 58 uint32_t lowmem_limit; 59 enum vm_mmap_style vms; 60 size_t lowmem; 61 char *lowmem_addr; 62 size_t highmem; 63 char *highmem_addr; 64 char *name; 65 }; 66 67 #define CREATE(x) sysctlbyname("hw.vmm.create", NULL, NULL, (x), strlen((x))) 68 #define DESTROY(x) sysctlbyname("hw.vmm.destroy", NULL, NULL, (x), strlen((x))) 69 70 static int 71 vm_device_open(const char *name) 72 { 73 int fd, len; 74 char *vmfile; 75 76 len = strlen("/dev/vmm/") + strlen(name) + 1; 77 vmfile = malloc(len); 78 assert(vmfile != NULL); 79 snprintf(vmfile, len, "/dev/vmm/%s", name); 80 81 /* Open the device file */ 82 fd = open(vmfile, O_RDWR, 0); 83 84 free(vmfile); 85 return (fd); 86 } 87 88 int 89 vm_create(const char *name) 90 { 91 92 return (CREATE((char *)name)); 93 } 94 95 struct vmctx * 96 vm_open(const char *name) 97 { 98 struct vmctx *vm; 99 100 vm = malloc(sizeof(struct vmctx) + strlen(name) + 1); 101 assert(vm != NULL); 102 103 vm->fd = -1; 104 vm->lowmem_limit = 3 * GB; 105 vm->name = (char *)(vm + 1); 106 strcpy(vm->name, name); 107 108 if ((vm->fd = vm_device_open(vm->name)) < 0) 109 goto err; 110 111 return (vm); 112 err: 113 vm_destroy(vm); 114 return (NULL); 115 } 116 117 void 118 vm_destroy(struct vmctx *vm) 119 { 120 assert(vm != NULL); 121 122 if (vm->fd >= 0) 123 close(vm->fd); 124 DESTROY(vm->name); 125 126 free(vm); 127 } 128 129 int 130 vm_parse_memsize(const char *optarg, size_t *ret_memsize) 131 { 132 char *endptr; 133 size_t optval; 134 int error; 135 136 optval = strtoul(optarg, &endptr, 0); 137 if (*optarg != '\0' && *endptr == '\0') { 138 /* 139 * For the sake of backward compatibility if the memory size 140 * specified on the command line is less than a megabyte then 141 * it is interpreted as being in units of MB. 142 */ 143 if (optval < MB) 144 optval *= MB; 145 *ret_memsize = optval; 146 error = 0; 147 } else 148 error = expand_number(optarg, ret_memsize); 149 150 return (error); 151 } 152 153 int 154 vm_get_memory_seg(struct vmctx *ctx, vm_paddr_t gpa, size_t *ret_len, 155 int *wired) 156 { 157 int error; 158 struct vm_memory_segment seg; 159 160 bzero(&seg, sizeof(seg)); 161 seg.gpa = gpa; 162 error = ioctl(ctx->fd, VM_GET_MEMORY_SEG, &seg); 163 *ret_len = seg.len; 164 if (wired != NULL) 165 *wired = seg.wired; 166 return (error); 167 } 168 169 uint32_t 170 vm_get_lowmem_limit(struct vmctx *ctx) 171 { 172 173 return (ctx->lowmem_limit); 174 } 175 176 void 177 vm_set_lowmem_limit(struct vmctx *ctx, uint32_t limit) 178 { 179 180 ctx->lowmem_limit = limit; 181 } 182 183 static int 184 setup_memory_segment(struct vmctx *ctx, vm_paddr_t gpa, size_t len, char **addr) 185 { 186 int error; 187 struct vm_memory_segment seg; 188 189 /* 190 * Create and optionally map 'len' bytes of memory at guest 191 * physical address 'gpa' 192 */ 193 bzero(&seg, sizeof(seg)); 194 seg.gpa = gpa; 195 seg.len = len; 196 error = ioctl(ctx->fd, VM_MAP_MEMORY, &seg); 197 if (error == 0 && addr != NULL) { 198 *addr = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_SHARED, 199 ctx->fd, gpa); 200 } 201 return (error); 202 } 203 204 int 205 vm_setup_memory(struct vmctx *ctx, size_t memsize, enum vm_mmap_style vms) 206 { 207 char **addr; 208 int error; 209 210 /* XXX VM_MMAP_SPARSE not implemented yet */ 211 assert(vms == VM_MMAP_NONE || vms == VM_MMAP_ALL); 212 ctx->vms = vms; 213 214 /* 215 * If 'memsize' cannot fit entirely in the 'lowmem' segment then 216 * create another 'highmem' segment above 4GB for the remainder. 217 */ 218 if (memsize > ctx->lowmem_limit) { 219 ctx->lowmem = ctx->lowmem_limit; 220 ctx->highmem = memsize - ctx->lowmem; 221 } else { 222 ctx->lowmem = memsize; 223 ctx->highmem = 0; 224 } 225 226 if (ctx->lowmem > 0) { 227 addr = (vms == VM_MMAP_ALL) ? &ctx->lowmem_addr : NULL; 228 error = setup_memory_segment(ctx, 0, ctx->lowmem, addr); 229 if (error) 230 return (error); 231 } 232 233 if (ctx->highmem > 0) { 234 addr = (vms == VM_MMAP_ALL) ? &ctx->highmem_addr : NULL; 235 error = setup_memory_segment(ctx, 4*GB, ctx->highmem, addr); 236 if (error) 237 return (error); 238 } 239 240 return (0); 241 } 242 243 void * 244 vm_map_gpa(struct vmctx *ctx, vm_paddr_t gaddr, size_t len) 245 { 246 247 /* XXX VM_MMAP_SPARSE not implemented yet */ 248 assert(ctx->vms == VM_MMAP_ALL); 249 250 if (gaddr < ctx->lowmem && gaddr + len <= ctx->lowmem) 251 return ((void *)(ctx->lowmem_addr + gaddr)); 252 253 if (gaddr >= 4*GB) { 254 gaddr -= 4*GB; 255 if (gaddr < ctx->highmem && gaddr + len <= ctx->highmem) 256 return ((void *)(ctx->highmem_addr + gaddr)); 257 } 258 259 return (NULL); 260 } 261 262 int 263 vm_set_desc(struct vmctx *ctx, int vcpu, int reg, 264 uint64_t base, uint32_t limit, uint32_t access) 265 { 266 int error; 267 struct vm_seg_desc vmsegdesc; 268 269 bzero(&vmsegdesc, sizeof(vmsegdesc)); 270 vmsegdesc.cpuid = vcpu; 271 vmsegdesc.regnum = reg; 272 vmsegdesc.desc.base = base; 273 vmsegdesc.desc.limit = limit; 274 vmsegdesc.desc.access = access; 275 276 error = ioctl(ctx->fd, VM_SET_SEGMENT_DESCRIPTOR, &vmsegdesc); 277 return (error); 278 } 279 280 int 281 vm_get_desc(struct vmctx *ctx, int vcpu, int reg, 282 uint64_t *base, uint32_t *limit, uint32_t *access) 283 { 284 int error; 285 struct vm_seg_desc vmsegdesc; 286 287 bzero(&vmsegdesc, sizeof(vmsegdesc)); 288 vmsegdesc.cpuid = vcpu; 289 vmsegdesc.regnum = reg; 290 291 error = ioctl(ctx->fd, VM_GET_SEGMENT_DESCRIPTOR, &vmsegdesc); 292 if (error == 0) { 293 *base = vmsegdesc.desc.base; 294 *limit = vmsegdesc.desc.limit; 295 *access = vmsegdesc.desc.access; 296 } 297 return (error); 298 } 299 300 int 301 vm_set_register(struct vmctx *ctx, int vcpu, int reg, uint64_t val) 302 { 303 int error; 304 struct vm_register vmreg; 305 306 bzero(&vmreg, sizeof(vmreg)); 307 vmreg.cpuid = vcpu; 308 vmreg.regnum = reg; 309 vmreg.regval = val; 310 311 error = ioctl(ctx->fd, VM_SET_REGISTER, &vmreg); 312 return (error); 313 } 314 315 int 316 vm_get_register(struct vmctx *ctx, int vcpu, int reg, uint64_t *ret_val) 317 { 318 int error; 319 struct vm_register vmreg; 320 321 bzero(&vmreg, sizeof(vmreg)); 322 vmreg.cpuid = vcpu; 323 vmreg.regnum = reg; 324 325 error = ioctl(ctx->fd, VM_GET_REGISTER, &vmreg); 326 *ret_val = vmreg.regval; 327 return (error); 328 } 329 330 int 331 vm_run(struct vmctx *ctx, int vcpu, uint64_t rip, struct vm_exit *vmexit) 332 { 333 int error; 334 struct vm_run vmrun; 335 336 bzero(&vmrun, sizeof(vmrun)); 337 vmrun.cpuid = vcpu; 338 vmrun.rip = rip; 339 340 error = ioctl(ctx->fd, VM_RUN, &vmrun); 341 bcopy(&vmrun.vm_exit, vmexit, sizeof(struct vm_exit)); 342 return (error); 343 } 344 345 static int 346 vm_inject_event_real(struct vmctx *ctx, int vcpu, enum vm_event_type type, 347 int vector, int error_code, int error_code_valid) 348 { 349 struct vm_event ev; 350 351 bzero(&ev, sizeof(ev)); 352 ev.cpuid = vcpu; 353 ev.type = type; 354 ev.vector = vector; 355 ev.error_code = error_code; 356 ev.error_code_valid = error_code_valid; 357 358 return (ioctl(ctx->fd, VM_INJECT_EVENT, &ev)); 359 } 360 361 int 362 vm_inject_event(struct vmctx *ctx, int vcpu, enum vm_event_type type, 363 int vector) 364 { 365 366 return (vm_inject_event_real(ctx, vcpu, type, vector, 0, 0)); 367 } 368 369 int 370 vm_inject_event2(struct vmctx *ctx, int vcpu, enum vm_event_type type, 371 int vector, int error_code) 372 { 373 374 return (vm_inject_event_real(ctx, vcpu, type, vector, error_code, 1)); 375 } 376 377 int 378 vm_apicid2vcpu(struct vmctx *ctx, int apicid) 379 { 380 /* 381 * The apic id associated with the 'vcpu' has the same numerical value 382 * as the 'vcpu' itself. 383 */ 384 return (apicid); 385 } 386 387 int 388 vm_lapic_irq(struct vmctx *ctx, int vcpu, int vector) 389 { 390 struct vm_lapic_irq vmirq; 391 392 bzero(&vmirq, sizeof(vmirq)); 393 vmirq.cpuid = vcpu; 394 vmirq.vector = vector; 395 396 return (ioctl(ctx->fd, VM_LAPIC_IRQ, &vmirq)); 397 } 398 399 int 400 vm_inject_nmi(struct vmctx *ctx, int vcpu) 401 { 402 struct vm_nmi vmnmi; 403 404 bzero(&vmnmi, sizeof(vmnmi)); 405 vmnmi.cpuid = vcpu; 406 407 return (ioctl(ctx->fd, VM_INJECT_NMI, &vmnmi)); 408 } 409 410 static struct { 411 const char *name; 412 int type; 413 } capstrmap[] = { 414 { "hlt_exit", VM_CAP_HALT_EXIT }, 415 { "mtrap_exit", VM_CAP_MTRAP_EXIT }, 416 { "pause_exit", VM_CAP_PAUSE_EXIT }, 417 { "unrestricted_guest", VM_CAP_UNRESTRICTED_GUEST }, 418 { "enable_invpcid", VM_CAP_ENABLE_INVPCID }, 419 { 0 } 420 }; 421 422 int 423 vm_capability_name2type(const char *capname) 424 { 425 int i; 426 427 for (i = 0; capstrmap[i].name != NULL && capname != NULL; i++) { 428 if (strcmp(capstrmap[i].name, capname) == 0) 429 return (capstrmap[i].type); 430 } 431 432 return (-1); 433 } 434 435 const char * 436 vm_capability_type2name(int type) 437 { 438 int i; 439 440 for (i = 0; capstrmap[i].name != NULL; i++) { 441 if (capstrmap[i].type == type) 442 return (capstrmap[i].name); 443 } 444 445 return (NULL); 446 } 447 448 int 449 vm_get_capability(struct vmctx *ctx, int vcpu, enum vm_cap_type cap, 450 int *retval) 451 { 452 int error; 453 struct vm_capability vmcap; 454 455 bzero(&vmcap, sizeof(vmcap)); 456 vmcap.cpuid = vcpu; 457 vmcap.captype = cap; 458 459 error = ioctl(ctx->fd, VM_GET_CAPABILITY, &vmcap); 460 *retval = vmcap.capval; 461 return (error); 462 } 463 464 int 465 vm_set_capability(struct vmctx *ctx, int vcpu, enum vm_cap_type cap, int val) 466 { 467 struct vm_capability vmcap; 468 469 bzero(&vmcap, sizeof(vmcap)); 470 vmcap.cpuid = vcpu; 471 vmcap.captype = cap; 472 vmcap.capval = val; 473 474 return (ioctl(ctx->fd, VM_SET_CAPABILITY, &vmcap)); 475 } 476 477 int 478 vm_assign_pptdev(struct vmctx *ctx, int bus, int slot, int func) 479 { 480 struct vm_pptdev pptdev; 481 482 bzero(&pptdev, sizeof(pptdev)); 483 pptdev.bus = bus; 484 pptdev.slot = slot; 485 pptdev.func = func; 486 487 return (ioctl(ctx->fd, VM_BIND_PPTDEV, &pptdev)); 488 } 489 490 int 491 vm_unassign_pptdev(struct vmctx *ctx, int bus, int slot, int func) 492 { 493 struct vm_pptdev pptdev; 494 495 bzero(&pptdev, sizeof(pptdev)); 496 pptdev.bus = bus; 497 pptdev.slot = slot; 498 pptdev.func = func; 499 500 return (ioctl(ctx->fd, VM_UNBIND_PPTDEV, &pptdev)); 501 } 502 503 int 504 vm_map_pptdev_mmio(struct vmctx *ctx, int bus, int slot, int func, 505 vm_paddr_t gpa, size_t len, vm_paddr_t hpa) 506 { 507 struct vm_pptdev_mmio pptmmio; 508 509 bzero(&pptmmio, sizeof(pptmmio)); 510 pptmmio.bus = bus; 511 pptmmio.slot = slot; 512 pptmmio.func = func; 513 pptmmio.gpa = gpa; 514 pptmmio.len = len; 515 pptmmio.hpa = hpa; 516 517 return (ioctl(ctx->fd, VM_MAP_PPTDEV_MMIO, &pptmmio)); 518 } 519 520 int 521 vm_setup_msi(struct vmctx *ctx, int vcpu, int bus, int slot, int func, 522 int destcpu, int vector, int numvec) 523 { 524 struct vm_pptdev_msi pptmsi; 525 526 bzero(&pptmsi, sizeof(pptmsi)); 527 pptmsi.vcpu = vcpu; 528 pptmsi.bus = bus; 529 pptmsi.slot = slot; 530 pptmsi.func = func; 531 pptmsi.destcpu = destcpu; 532 pptmsi.vector = vector; 533 pptmsi.numvec = numvec; 534 535 return (ioctl(ctx->fd, VM_PPTDEV_MSI, &pptmsi)); 536 } 537 538 int 539 vm_setup_msix(struct vmctx *ctx, int vcpu, int bus, int slot, int func, 540 int idx, uint32_t msg, uint32_t vector_control, uint64_t addr) 541 { 542 struct vm_pptdev_msix pptmsix; 543 544 bzero(&pptmsix, sizeof(pptmsix)); 545 pptmsix.vcpu = vcpu; 546 pptmsix.bus = bus; 547 pptmsix.slot = slot; 548 pptmsix.func = func; 549 pptmsix.idx = idx; 550 pptmsix.msg = msg; 551 pptmsix.addr = addr; 552 pptmsix.vector_control = vector_control; 553 554 return ioctl(ctx->fd, VM_PPTDEV_MSIX, &pptmsix); 555 } 556 557 uint64_t * 558 vm_get_stats(struct vmctx *ctx, int vcpu, struct timeval *ret_tv, 559 int *ret_entries) 560 { 561 int error; 562 563 static struct vm_stats vmstats; 564 565 vmstats.cpuid = vcpu; 566 567 error = ioctl(ctx->fd, VM_STATS, &vmstats); 568 if (error == 0) { 569 if (ret_entries) 570 *ret_entries = vmstats.num_entries; 571 if (ret_tv) 572 *ret_tv = vmstats.tv; 573 return (vmstats.statbuf); 574 } else 575 return (NULL); 576 } 577 578 const char * 579 vm_get_stat_desc(struct vmctx *ctx, int index) 580 { 581 static struct vm_stat_desc statdesc; 582 583 statdesc.index = index; 584 if (ioctl(ctx->fd, VM_STAT_DESC, &statdesc) == 0) 585 return (statdesc.desc); 586 else 587 return (NULL); 588 } 589 590 int 591 vm_get_x2apic_state(struct vmctx *ctx, int vcpu, enum x2apic_state *state) 592 { 593 int error; 594 struct vm_x2apic x2apic; 595 596 bzero(&x2apic, sizeof(x2apic)); 597 x2apic.cpuid = vcpu; 598 599 error = ioctl(ctx->fd, VM_GET_X2APIC_STATE, &x2apic); 600 *state = x2apic.state; 601 return (error); 602 } 603 604 int 605 vm_set_x2apic_state(struct vmctx *ctx, int vcpu, enum x2apic_state state) 606 { 607 int error; 608 struct vm_x2apic x2apic; 609 610 bzero(&x2apic, sizeof(x2apic)); 611 x2apic.cpuid = vcpu; 612 x2apic.state = state; 613 614 error = ioctl(ctx->fd, VM_SET_X2APIC_STATE, &x2apic); 615 616 return (error); 617 } 618 619 /* 620 * From Intel Vol 3a: 621 * Table 9-1. IA-32 Processor States Following Power-up, Reset or INIT 622 */ 623 int 624 vcpu_reset(struct vmctx *vmctx, int vcpu) 625 { 626 int error; 627 uint64_t rflags, rip, cr0, cr4, zero, desc_base, rdx; 628 uint32_t desc_access, desc_limit; 629 uint16_t sel; 630 631 zero = 0; 632 633 rflags = 0x2; 634 error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RFLAGS, rflags); 635 if (error) 636 goto done; 637 638 rip = 0xfff0; 639 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RIP, rip)) != 0) 640 goto done; 641 642 cr0 = CR0_NE; 643 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_CR0, cr0)) != 0) 644 goto done; 645 646 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_CR3, zero)) != 0) 647 goto done; 648 649 cr4 = 0; 650 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_CR4, cr4)) != 0) 651 goto done; 652 653 /* 654 * CS: present, r/w, accessed, 16-bit, byte granularity, usable 655 */ 656 desc_base = 0xffff0000; 657 desc_limit = 0xffff; 658 desc_access = 0x0093; 659 error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_CS, 660 desc_base, desc_limit, desc_access); 661 if (error) 662 goto done; 663 664 sel = 0xf000; 665 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_CS, sel)) != 0) 666 goto done; 667 668 /* 669 * SS,DS,ES,FS,GS: present, r/w, accessed, 16-bit, byte granularity 670 */ 671 desc_base = 0; 672 desc_limit = 0xffff; 673 desc_access = 0x0093; 674 error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_SS, 675 desc_base, desc_limit, desc_access); 676 if (error) 677 goto done; 678 679 error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_DS, 680 desc_base, desc_limit, desc_access); 681 if (error) 682 goto done; 683 684 error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_ES, 685 desc_base, desc_limit, desc_access); 686 if (error) 687 goto done; 688 689 error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_FS, 690 desc_base, desc_limit, desc_access); 691 if (error) 692 goto done; 693 694 error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_GS, 695 desc_base, desc_limit, desc_access); 696 if (error) 697 goto done; 698 699 sel = 0; 700 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_SS, sel)) != 0) 701 goto done; 702 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_DS, sel)) != 0) 703 goto done; 704 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_ES, sel)) != 0) 705 goto done; 706 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_FS, sel)) != 0) 707 goto done; 708 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_GS, sel)) != 0) 709 goto done; 710 711 /* General purpose registers */ 712 rdx = 0xf00; 713 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RAX, zero)) != 0) 714 goto done; 715 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RBX, zero)) != 0) 716 goto done; 717 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RCX, zero)) != 0) 718 goto done; 719 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RDX, rdx)) != 0) 720 goto done; 721 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RSI, zero)) != 0) 722 goto done; 723 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RDI, zero)) != 0) 724 goto done; 725 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RBP, zero)) != 0) 726 goto done; 727 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RSP, zero)) != 0) 728 goto done; 729 730 /* GDTR, IDTR */ 731 desc_base = 0; 732 desc_limit = 0xffff; 733 desc_access = 0; 734 error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_GDTR, 735 desc_base, desc_limit, desc_access); 736 if (error != 0) 737 goto done; 738 739 error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_IDTR, 740 desc_base, desc_limit, desc_access); 741 if (error != 0) 742 goto done; 743 744 /* TR */ 745 desc_base = 0; 746 desc_limit = 0xffff; 747 desc_access = 0x0000008b; 748 error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_TR, 0, 0, desc_access); 749 if (error) 750 goto done; 751 752 sel = 0; 753 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_TR, sel)) != 0) 754 goto done; 755 756 /* LDTR */ 757 desc_base = 0; 758 desc_limit = 0xffff; 759 desc_access = 0x00000082; 760 error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_LDTR, desc_base, 761 desc_limit, desc_access); 762 if (error) 763 goto done; 764 765 sel = 0; 766 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_LDTR, 0)) != 0) 767 goto done; 768 769 /* XXX cr2, debug registers */ 770 771 error = 0; 772 done: 773 return (error); 774 } 775 776 int 777 vm_get_gpa_pmap(struct vmctx *ctx, uint64_t gpa, uint64_t *pte, int *num) 778 { 779 int error, i; 780 struct vm_gpa_pte gpapte; 781 782 bzero(&gpapte, sizeof(gpapte)); 783 gpapte.gpa = gpa; 784 785 error = ioctl(ctx->fd, VM_GET_GPA_PMAP, &gpapte); 786 787 if (error == 0) { 788 *num = gpapte.ptenum; 789 for (i = 0; i < gpapte.ptenum; i++) 790 pte[i] = gpapte.pte[i]; 791 } 792 793 return (error); 794 } 795