palacios/src/palacios/svm.c

   1 #include <palacios/svm.h>
   2 #include <palacios/vmm.h>
   3
   4 #include <palacios/vmcb.h>
   5 #include <palacios/vmm_mem.h>
   6 #include <palacios/vmm_paging.h>
   7 #include <palacios/svm_handler.h>
   8
   9 #include <palacios/vmm_debug.h>
  10 #include <palacios/vm_guest_mem.h>
  11
  12 #include <palacios/vmm_emulate.h>
  13
  14
  15 extern struct vmm_os_hooks * os_hooks;
  16
  17 extern uint_t cpuid_ecx(uint_t op);
  18 extern uint_t cpuid_edx(uint_t op);
  19 extern void Get_MSR(uint_t MSR, uint_t * high_byte, uint_t * low_byte);
  20 extern void Set_MSR(uint_t MSR, uint_t high_byte, uint_t low_byte);
  21 extern uint_t launch_svm(vmcb_t * vmcb_addr);
  22 extern void safe_svm_launch(vmcb_t * vmcb_addr, struct v3_gprs * gprs);
  23
  24 extern void STGI();
  25 extern void CLGI();
  26
  27 extern uint_t Get_CR3();
  28
  29
  30 extern void DisableInts();
  31
  32 /* Checks machine SVM capability */
  33 /* Implemented from: AMD Arch Manual 3, sect 15.4 */
  34 int is_svm_capable() {
  35   uint_t ret =  cpuid_ecx(CPUID_FEATURE_IDS);
  36   uint_t vm_cr_low = 0, vm_cr_high = 0;
  37
  38
  39   if ((ret & CPUID_FEATURE_IDS_ecx_svm_avail) == 0) {
  40     PrintDebug("SVM Not Available\n");
  41     return 0;
  42   }
  43
  44   Get_MSR(SVM_VM_CR_MSR, &vm_cr_high, &vm_cr_low);
  45
  46   if ((ret & CPUID_SVM_REV_AND_FEATURE_IDS_edx_np) == 1) {
  47     PrintDebug("Nested Paging not supported\n");
  48   }
  49
  50   if ((vm_cr_low & SVM_VM_CR_MSR_svmdis) == 0) {
  51     return 1;
  52   }
  53
  54   ret = cpuid_edx(CPUID_SVM_REV_AND_FEATURE_IDS);
  55
  56   if ((ret & CPUID_SVM_REV_AND_FEATURE_IDS_edx_svml) == 0) {
  57     PrintDebug("SVM BIOS Disabled, not unlockable\n");
  58   } else {
  59     PrintDebug("SVM is locked with a key\n");
  60   }
  61
  62   return 0;
  63 }
  64
  65
  66
  67 void Init_SVM(struct vmm_ctrl_ops * vmm_ops) {
  68   reg_ex_t msr;
  69   void * host_state;
  70
  71
  72   // Enable SVM on the CPU
  73   Get_MSR(EFER_MSR, &(msr.e_reg.high), &(msr.e_reg.low));
  74   msr.e_reg.low |= EFER_MSR_svm_enable;
  75   Set_MSR(EFER_MSR, 0, msr.e_reg.low);
  76
  77   PrintDebug("SVM Enabled\n");
  78
  79
  80   // Setup the host state save area
  81   host_state = os_hooks->allocate_pages(4);
  82
  83   msr.e_reg.high = 0;
  84   msr.e_reg.low = (uint_t)host_state;
  85
  86
  87   PrintDebug("Host State being saved at %x\n", (uint_t)host_state);
  88   Set_MSR(SVM_VM_HSAVE_PA_MSR, msr.e_reg.high, msr.e_reg.low);
  89
  90
  91
  92   // Setup the SVM specific vmm operations
  93   vmm_ops->init_guest = &init_svm_guest;
  94   vmm_ops->start_guest = &start_svm_guest;
  95
  96
  97   return;
  98 }
  99
 100
 101 int init_svm_guest(struct guest_info *info) {
 102
 103   PrintDebug("Allocating VMCB\n");
 104   info->vmm_data = (void*)Allocate_VMCB();
 105
 106
 107   //PrintDebug("Generating Guest nested page tables\n");
 108   //  info->page_tables = NULL;
 109   //info->page_tables = generate_guest_page_tables_64(&(info->mem_layout), &(info->mem_list));
 110   //info->page_tables = generate_guest_page_tables(&(info->mem_layout), &(info->mem_list));
 111   //  PrintDebugPageTables(info->page_tables);
 112
 113
 114   PrintDebug("Initializing VMCB (addr=%x)\n", info->vmm_data);
 115   Init_VMCB_BIOS((vmcb_t*)(info->vmm_data), *info);
 116
 117
 118   //  info->rip = 0;
 119
 120   info->vm_regs.rdi = 0;
 121   info->vm_regs.rsi = 0;
 122   info->vm_regs.rbp = 0;
 123   info->vm_regs.rsp = 0;
 124   info->vm_regs.rbx = 0;
 125   info->vm_regs.rdx = 0;
 126   info->vm_regs.rcx = 0;
 127   info->vm_regs.rax = 0;
 128
 129   return 0;
 130 }
 131
 132
 133 // can we start a kernel thread here...
 134 int start_svm_guest(struct guest_info *info) {
 135
 136
 137
 138   PrintDebug("Launching SVM VM (vmcb=%x)\n", info->vmm_data);
 139   //PrintDebugVMCB((vmcb_t*)(info->vmm_data));
 140
 141   while (1) {
 142
 143     CLGI();
 144
 145     //PrintDebug("SVM Launch Args (vmcb=%x), (info=%x), (vm_regs=%x)\n", info->vmm_data,  &(info->vm_regs));
 146     PrintDebug("Launching to RIP: %x\n", info->rip);
 147     safe_svm_launch((vmcb_t*)(info->vmm_data), &(info->vm_regs));
 148     //launch_svm((vmcb_t*)(info->vmm_data));
 149     //PrintDebug("SVM Returned\n");
 150
 151
 152
 153     STGI();
 154
 155
 156     if (handle_svm_exit(info) != 0) {
 157       vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA((vmcb_t*)(info->vmm_data));
 158       addr_t host_addr;
 159       addr_t linear_addr = 0;
 160
 161       PrintDebug("SVM ERROR!!\n");
 162
 163
 164       PrintDebug("RIP: %x\n", guest_state->rip);
 165
 166
 167       linear_addr = get_addr_linear(info, guest_state->rip, &(info->segments.cs));
 168
 169
 170       PrintDebug("RIP Linear: %x\n", linear_addr);
 171
 172       guest_pa_to_host_pa(info, linear_addr, &host_addr);
 173
 174       PrintDebug("Host Address of rip = 0x%x\n", host_addr);
 175
 176       PrintDebug("Instr (15 bytes) at %x:\n", host_addr);
 177       PrintTraceMemDump((char*)host_addr, 15);
 178
 179       break;
 180     }
 181   }
 182   return 0;
 183 }
 184
 185
 186
 187 vmcb_t * Allocate_VMCB() {
 188   vmcb_t * vmcb_page = (vmcb_t*)os_hooks->allocate_pages(1);
 189
 190
 191   memset(vmcb_page, 0, 4096);
 192
 193   return vmcb_page;
 194 }
 195
 196
 197
 198 void Init_VMCB(vmcb_t * vmcb, struct guest_info vm_info) {
 199   vmcb_ctrl_t * ctrl_area = GET_VMCB_CTRL_AREA(vmcb);
 200   vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA(vmcb);
 201   uint_t i;
 202
 203
 204   guest_state->rsp = vm_info.vm_regs.rsp;
 205   guest_state->rip = vm_info.rip;
 206
 207
 208   //ctrl_area->instrs.instrs.CR0 = 1;
 209   ctrl_area->cr_reads.cr0 = 1;
 210   ctrl_area->cr_writes.cr0 = 1;
 211
 212   guest_state->efer |= EFER_MSR_svm_enable;
 213   guest_state->rflags = 0x00000002; // The reserved bit is always 1
 214   ctrl_area->svm_instrs.VMRUN = 1;
 215   // guest_state->cr0 = 0x00000001;    // PE
 216   ctrl_area->guest_ASID = 1;
 217
 218
 219   ctrl_area->exceptions.de = 1;
 220   ctrl_area->exceptions.df = 1;
 221   ctrl_area->exceptions.pf = 1;
 222   ctrl_area->exceptions.ts = 1;
 223   ctrl_area->exceptions.ss = 1;
 224   ctrl_area->exceptions.ac = 1;
 225   ctrl_area->exceptions.mc = 1;
 226   ctrl_area->exceptions.gp = 1;
 227   ctrl_area->exceptions.ud = 1;
 228   ctrl_area->exceptions.np = 1;
 229   ctrl_area->exceptions.of = 1;
 230   ctrl_area->exceptions.nmi = 1;
 231
 232   guest_state->cs.selector = 0x0000;
 233   guest_state->cs.limit=~0u;
 234   guest_state->cs.base = guest_state->cs.selector<<4;
 235   guest_state->cs.attrib.raw = 0xf3;
 236
 237
 238   struct vmcb_selector *segregs [] = {&(guest_state->ss), &(guest_state->ds), &(guest_state->es), &(guest_state->fs), &(guest_state->gs), NULL};
 239   for ( i = 0; segregs[i] != NULL; i++) {
 240     struct vmcb_selector * seg = segregs[i];
 241
 242     seg->selector = 0x0000;
 243     seg->base = seg->selector << 4;
 244     seg->attrib.raw = 0xf3;
 245     seg->limit = ~0u;
 246   }
 247
 248   if (vm_info.io_map.num_ports > 0) {
 249     vmm_io_hook_t * iter;
 250     addr_t io_port_bitmap;
 251
 252     io_port_bitmap = (addr_t)os_hooks->allocate_pages(3);
 253     memset((uchar_t*)io_port_bitmap, 0, PAGE_SIZE * 3);
 254
 255     ctrl_area->IOPM_BASE_PA = io_port_bitmap;
 256
 257     //PrintDebug("Setting up IO Map at 0x%x\n", io_port_bitmap);
 258
 259     FOREACH_IO_HOOK(vm_info.io_map, iter) {
 260       ushort_t port = iter->port;
 261       uchar_t * bitmap = (uchar_t *)io_port_bitmap;
 262
 263       bitmap += (port / 8);
 264       PrintDebug("Setting Bit in block %x\n", bitmap);
 265       *bitmap |= 1 << (port % 8);
 266     }
 267
 268
 269     //PrintDebugMemDump((uchar_t*)io_port_bitmap, PAGE_SIZE *2);
 270
 271     ctrl_area->instrs.IOIO_PROT = 1;
 272   }
 273
 274   ctrl_area->instrs.INTR = 1;
 275
 276
 277
 278   if (vm_info.page_mode == SHADOW_PAGING) {
 279     PrintDebug("Creating initial shadow page table\n");
 280     vm_info.shdw_pg_state.shadow_cr3 |= ((addr_t)create_passthrough_pde32_pts(&vm_info) & ~0xfff);
 281     PrintDebug("Created\n");
 282
 283     guest_state->cr3 = vm_info.shdw_pg_state.shadow_cr3;
 284
 285     ctrl_area->cr_reads.cr3 = 1;
 286     ctrl_area->cr_writes.cr3 = 1;
 287
 288
 289     ctrl_area->instrs.INVLPG = 1;
 290     ctrl_area->instrs.INVLPGA = 1;
 291
 292     guest_state->g_pat = 0x7040600070406ULL;
 293
 294     guest_state->cr0 |= 0x80000000;
 295   } else if (vm_info.page_mode == NESTED_PAGING) {
 296     // Flush the TLB on entries/exits
 297     //ctrl_area->TLB_CONTROL = 1;
 298
 299     // Enable Nested Paging
 300     //ctrl_area->NP_ENABLE = 1;
 301
 302     //PrintDebug("NP_Enable at 0x%x\n", &(ctrl_area->NP_ENABLE));
 303
 304         // Set the Nested Page Table pointer
 305     //    ctrl_area->N_CR3 = ((addr_t)vm_info.page_tables);
 306     // ctrl_area->N_CR3 = (addr_t)(vm_info.page_tables);
 307
 308     //   ctrl_area->N_CR3 = Get_CR3();
 309     // guest_state->cr3 |= (Get_CR3() & 0xfffff000);
 310
 311     //    guest_state->g_pat = 0x7040600070406ULL;
 312   }
 313
 314
 315
 316 }
 317
 318
 319
 320 void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info vm_info) {
 321   vmcb_ctrl_t * ctrl_area = GET_VMCB_CTRL_AREA(vmcb);
 322   vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA(vmcb);
 323   uint_t i;
 324
 325
 326   guest_state->rsp = vm_info.vm_regs.rsp;
 327   // guest_state->rip = vm_info.rip;
 328   guest_state->rip = 0xfff0;
 329
 330   //ctrl_area->instrs.instrs.CR0 = 1;
 331   ctrl_area->cr_reads.cr0 = 1;
 332   ctrl_area->cr_writes.cr0 = 1;
 333
 334   guest_state->efer |= EFER_MSR_svm_enable;
 335   guest_state->rflags = 0x00000002; // The reserved bit is always 1
 336   ctrl_area->svm_instrs.VMRUN = 1;
 337   ctrl_area->instrs.HLT = 1;
 338   // guest_state->cr0 = 0x00000001;    // PE
 339   ctrl_area->guest_ASID = 1;
 340
 341   ctrl_area->exceptions.de = 1;
 342   ctrl_area->exceptions.df = 1;
 343   ctrl_area->exceptions.pf = 1;
 344   ctrl_area->exceptions.ts = 1;
 345   ctrl_area->exceptions.ss = 1;
 346   ctrl_area->exceptions.ac = 1;
 347   ctrl_area->exceptions.mc = 1;
 348   ctrl_area->exceptions.gp = 1;
 349   ctrl_area->exceptions.ud = 1;
 350   ctrl_area->exceptions.np = 1;
 351   ctrl_area->exceptions.of = 1;
 352   ctrl_area->exceptions.nmi = 1;
 353
 354   vm_info.vm_regs.rdx = 0x00000f00;
 355
 356   guest_state->cr0 = 0x60000010;
 357
 358   guest_state->cs.selector = 0xf000;
 359   guest_state->cs.limit=0xffff;
 360   guest_state->cs.base = 0x0000000f0000LL;
 361   guest_state->cs.attrib.raw = 0xf3;
 362
 363
 364   struct vmcb_selector *segregs [] = {&(guest_state->ss), &(guest_state->ds), &(guest_state->es), &(guest_state->fs), &(guest_state->gs), NULL};
 365   for ( i = 0; segregs[i] != NULL; i++) {
 366     struct vmcb_selector * seg = segregs[i];
 367
 368     seg->selector = 0x0000;
 369     //    seg->base = seg->selector << 4;
 370     seg->base = 0x00000000;
 371     seg->attrib.raw = 0xf3;
 372     seg->limit = ~0u;
 373   }
 374
 375   guest_state->gdtr.limit = 0x0000ffff;
 376   guest_state->gdtr.base = 0x0000000000000000LL;
 377   guest_state->idtr.limit = 0x0000ffff;
 378   guest_state->idtr.base = 0x0000000000000000LL;
 379
 380   guest_state->ldtr.selector = 0x0000;
 381   guest_state->ldtr.limit = 0x0000ffff;
 382   guest_state->ldtr.base = 0x0000000000000000LL;
 383   guest_state->tr.selector = 0x0000;
 384   guest_state->tr.limit = 0x0000ffff;
 385   guest_state->tr.base = 0x0000000000000000LL;
 386
 387
 388   guest_state->dr6 = 0x00000000ffff0ff0LL;
 389   guest_state->dr7 = 0x0000000000000400LL;
 390
 391   if (vm_info.io_map.num_ports > 0) {
 392     vmm_io_hook_t * iter;
 393     addr_t io_port_bitmap;
 394
 395     io_port_bitmap = (addr_t)os_hooks->allocate_pages(3);
 396     memset((uchar_t*)io_port_bitmap, 0, PAGE_SIZE * 3);
 397
 398     ctrl_area->IOPM_BASE_PA = io_port_bitmap;
 399
 400     //PrintDebug("Setting up IO Map at 0x%x\n", io_port_bitmap);
 401
 402     FOREACH_IO_HOOK(vm_info.io_map, iter) {
 403       ushort_t port = iter->port;
 404       uchar_t * bitmap = (uchar_t *)io_port_bitmap;
 405
 406       bitmap += (port / 8);
 407       PrintDebug("Setting Bit for port 0x%x\n", port);
 408       *bitmap |= 1 << (port % 8);
 409     }
 410
 411
 412     //PrintDebugMemDump((uchar_t*)io_port_bitmap, PAGE_SIZE *2);
 413
 414     ctrl_area->instrs.IOIO_PROT = 1;
 415   }
 416
 417
 418
 419   PrintDebug("Exiting on interrupts\n");
 420   ctrl_area->guest_ctrl.V_INTR_MASKING = 1;
 421   ctrl_area->instrs.INTR = 1;
 422
 423
 424   if (vm_info.page_mode == SHADOW_PAGING) {
 425     PrintDebug("Creating initial shadow page table\n");
 426     vm_info.shdw_pg_state.shadow_cr3 |= ((addr_t)create_passthrough_pde32_pts(&vm_info) & ~0xfff);
 427     PrintDebug("Created\n");
 428
 429     guest_state->cr3 = vm_info.shdw_pg_state.shadow_cr3;
 430
 431     //PrintDebugPageTables((pde32_t*)(vm_info.shdw_pg_state.shadow_cr3.e_reg.low));
 432
 433     ctrl_area->cr_reads.cr3 = 1;
 434     ctrl_area->cr_writes.cr3 = 1;
 435
 436
 437     ctrl_area->instrs.INVLPG = 1;
 438     ctrl_area->instrs.INVLPGA = 1;
 439
 440     guest_state->g_pat = 0x7040600070406ULL;
 441
 442     guest_state->cr0 |= 0x80000000;
 443   } else if (vm_info.page_mode == NESTED_PAGING) {
 444     // Flush the TLB on entries/exits
 445     //ctrl_area->TLB_CONTROL = 1;
 446
 447     // Enable Nested Paging
 448     //ctrl_area->NP_ENABLE = 1;
 449
 450     //PrintDebug("NP_Enable at 0x%x\n", &(ctrl_area->NP_ENABLE));
 451
 452         // Set the Nested Page Table pointer
 453     //    ctrl_area->N_CR3 = ((addr_t)vm_info.page_tables);
 454     // ctrl_area->N_CR3 = (addr_t)(vm_info.page_tables);
 455
 456     //   ctrl_area->N_CR3 = Get_CR3();
 457     // guest_state->cr3 |= (Get_CR3() & 0xfffff000);
 458
 459     //    guest_state->g_pat = 0x7040600070406ULL;
 460   }
 461
 462
 463
 464 }
 465
 466
 467 #if 0
 468 void Init_VMCB_pe(vmcb_t *vmcb, struct guest_info vm_info) {
 469   vmcb_ctrl_t * ctrl_area = GET_VMCB_CTRL_AREA(vmcb);
 470   vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA(vmcb);
 471   uint_t i = 0;
 472
 473
 474   guest_state->rsp = vm_info.vm_regs.rsp;
 475   guest_state->rip = vm_info.rip;
 476
 477
 478   /* I pretty much just gutted this from TVMM */
 479   /* Note: That means its probably wrong */
 480
 481   // set the segment registers to mirror ours
 482   guest_state->cs.selector = 1<<3;
 483   guest_state->cs.attrib.fields.type = 0xa; // Code segment+read
 484   guest_state->cs.attrib.fields.S = 1;
 485   guest_state->cs.attrib.fields.P = 1;
 486   guest_state->cs.attrib.fields.db = 1;
 487   guest_state->cs.attrib.fields.G = 1;
 488   guest_state->cs.limit = 0xfffff;
 489   guest_state->cs.base = 0;
 490
 491   struct vmcb_selector *segregs [] = {&(guest_state->ss), &(guest_state->ds), &(guest_state->es), &(guest_state->fs), &(guest_state->gs), NULL};
 492   for ( i = 0; segregs[i] != NULL; i++) {
 493     struct vmcb_selector * seg = segregs[i];
 494
 495     seg->selector = 2<<3;
 496     seg->attrib.fields.type = 0x2; // Data Segment+read/write
 497     seg->attrib.fields.S = 1;
 498     seg->attrib.fields.P = 1;
 499     seg->attrib.fields.db = 1;
 500     seg->attrib.fields.G = 1;
 501     seg->limit = 0xfffff;
 502     seg->base = 0;
 503   }
 504
 505
 506   {
 507     /* JRL THIS HAS TO GO */
 508
 509     //    guest_state->tr.selector = GetTR_Selector();
 510     guest_state->tr.attrib.fields.type = 0x9;
 511     guest_state->tr.attrib.fields.P = 1;
 512     // guest_state->tr.limit = GetTR_Limit();
 513     //guest_state->tr.base = GetTR_Base();// - 0x2000;
 514     /* ** */
 515   }
 516
 517
 518   /* ** */
 519
 520
 521   guest_state->efer |= EFER_MSR_svm_enable;
 522   guest_state->rflags = 0x00000002; // The reserved bit is always 1
 523   ctrl_area->svm_instrs.VMRUN = 1;
 524   guest_state->cr0 = 0x00000001;    // PE
 525   ctrl_area->guest_ASID = 1;
 526
 527
 528   //  guest_state->cpl = 0;
 529
 530
 531
 532   // Setup exits
 533
 534   ctrl_area->cr_writes.cr4 = 1;
 535
 536   ctrl_area->exceptions.de = 1;
 537   ctrl_area->exceptions.df = 1;
 538   ctrl_area->exceptions.pf = 1;
 539   ctrl_area->exceptions.ts = 1;
 540   ctrl_area->exceptions.ss = 1;
 541   ctrl_area->exceptions.ac = 1;
 542   ctrl_area->exceptions.mc = 1;
 543   ctrl_area->exceptions.gp = 1;
 544   ctrl_area->exceptions.ud = 1;
 545   ctrl_area->exceptions.np = 1;
 546   ctrl_area->exceptions.of = 1;
 547   ctrl_area->exceptions.nmi = 1;
 548
 549
 550
 551   ctrl_area->instrs.IOIO_PROT = 1;
 552   ctrl_area->IOPM_BASE_PA = (uint_t)os_hooks->allocate_pages(3);
 553
 554   {
 555     reg_ex_t tmp_reg;
 556     tmp_reg.r_reg = ctrl_area->IOPM_BASE_PA;
 557     memset((void*)(tmp_reg.e_reg.low), 0xffffffff, PAGE_SIZE * 2);
 558   }
 559
 560   ctrl_area->instrs.INTR = 1;
 561
 562
 563   {
 564     char gdt_buf[6];
 565     char idt_buf[6];
 566
 567     memset(gdt_buf, 0, 6);
 568     memset(idt_buf, 0, 6);
 569
 570
 571     uint_t gdt_base, idt_base;
 572     ushort_t gdt_limit, idt_limit;
 573
 574     GetGDTR(gdt_buf);
 575     gdt_base = *(ulong_t*)((uchar_t*)gdt_buf + 2) & 0xffffffff;
 576     gdt_limit = *(ushort_t*)(gdt_buf) & 0xffff;
 577     PrintDebug("GDT: base: %x, limit: %x\n", gdt_base, gdt_limit);
 578
 579     GetIDTR(idt_buf);
 580     idt_base = *(ulong_t*)(idt_buf + 2) & 0xffffffff;
 581     idt_limit = *(ushort_t*)(idt_buf) & 0xffff;
 582     PrintDebug("IDT: base: %x, limit: %x\n",idt_base, idt_limit);
 583
 584
 585     // gdt_base -= 0x2000;
 586     //idt_base -= 0x2000;
 587
 588     guest_state->gdtr.base = gdt_base;
 589     guest_state->gdtr.limit = gdt_limit;
 590     guest_state->idtr.base = idt_base;
 591     guest_state->idtr.limit = idt_limit;
 592
 593
 594   }
 595
 596
 597   // also determine if CPU supports nested paging
 598   /*
 599   if (vm_info.page_tables) {
 600     //   if (0) {
 601     // Flush the TLB on entries/exits
 602     ctrl_area->TLB_CONTROL = 1;
 603
 604     // Enable Nested Paging
 605     ctrl_area->NP_ENABLE = 1;
 606
 607     PrintDebug("NP_Enable at 0x%x\n", &(ctrl_area->NP_ENABLE));
 608
 609         // Set the Nested Page Table pointer
 610     ctrl_area->N_CR3 |= ((addr_t)vm_info.page_tables & 0xfffff000);
 611
 612
 613     //   ctrl_area->N_CR3 = Get_CR3();
 614     // guest_state->cr3 |= (Get_CR3() & 0xfffff000);
 615
 616     guest_state->g_pat = 0x7040600070406ULL;
 617
 618     PrintDebug("Set Nested CR3: lo: 0x%x  hi: 0x%x\n", (uint_t)*(&(ctrl_area->N_CR3)), (uint_t)*((unsigned char *)&(ctrl_area->N_CR3) + 4));
 619     PrintDebug("Set Guest CR3: lo: 0x%x  hi: 0x%x\n", (uint_t)*(&(guest_state->cr3)), (uint_t)*((unsigned char *)&(guest_state->cr3) + 4));
 620     // Enable Paging
 621     //    guest_state->cr0 |= 0x80000000;
 622   }
 623   */
 624
 625 }
 626
 627
 628
 629
 630
 631 #endif
 632
 633
 634
 635
 636
 637
 638
 639
 640
 641
 642
 643
 644
 645
 646 /*
 647
 648
 649 void Init_VMCB_Real(vmcb_t * vmcb, struct guest_info vm_info) {
 650   vmcb_ctrl_t * ctrl_area = GET_VMCB_CTRL_AREA(vmcb);
 651   vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA(vmcb);
 652   uint_t i;
 653
 654
 655   guest_state->rsp = vm_info.vm_regs.rsp;
 656   guest_state->rip = vm_info.rip;
 657
 658
 659   guest_state->efer |= EFER_MSR_svm_enable;
 660   guest_state->rflags = 0x00000002; // The reserved bit is always 1
 661   ctrl_area->svm_instrs.instrs.VMRUN = 1;
 662   ctrl_area->guest_ASID = 1;
 663   guest_state->cr0 = 0x60000010;
 664
 665
 666   ctrl_area->exceptions.de = 1;
 667   ctrl_area->exceptions.df = 1;
 668   ctrl_area->exceptions.pf = 1;
 669   ctrl_area->exceptions.ts = 1;
 670   ctrl_area->exceptions.ss = 1;
 671   ctrl_area->exceptions.ac = 1;
 672   ctrl_area->exceptions.mc = 1;
 673   ctrl_area->exceptions.gp = 1;
 674   ctrl_area->exceptions.ud = 1;
 675   ctrl_area->exceptions.np = 1;
 676   ctrl_area->exceptions.of = 1;
 677   ctrl_area->exceptions.nmi = 1;
 678
 679   guest_state->cs.selector = 0xf000;
 680   guest_state->cs.limit=0xffff;
 681   guest_state->cs.base =  0xffff0000;
 682   guest_state->cs.attrib.raw = 0x9a;
 683
 684
 685   struct vmcb_selector *segregs [] = {&(guest_state->ss), &(guest_state->ds), &(guest_state->es), &(guest_state->fs), &(guest_state->gs), NULL};
 686   for ( i = 0; segregs[i] != NULL; i++) {
 687     struct vmcb_selector * seg = segregs[i];
 688
 689     seg->selector = 0x0000;
 690     seg->base = 0xffff0000;
 691     seg->attrib.raw = 0x9b;
 692     seg->limit = 0xffff;
 693   }
 694
 695   // Set GPRs
 696   //
 697   //  EDX == 0xfxx
 698   //  EAX, EBX, ECX, ESI, EDI, EBP, ESP == 0x0
 699   //
 700
 701   guest_state->gdtr.base = 0;
 702   guest_state->gdtr.limit = 0xffff;
 703   guest_state->gdtr.attrib.raw = 0x0;
 704
 705   guest_state->idtr.base = 0;
 706   guest_state->idtr.limit = 0xffff;
 707   guest_state->idtr.attrib.raw = 0x0;
 708
 709   guest_state->ldtr.base = 0;
 710   guest_state->ldtr.limit = 0xffff;
 711   guest_state->ldtr.attrib.raw = 0x82;
 712
 713   guest_state->tr.base = 0;
 714   guest_state->tr.limit = 0xffff;
 715   guest_state->tr.attrib.raw = 0x83;
 716
 717
 718
 719
 720   if (vm_info.io_map.num_ports > 0) {
 721     vmm_io_hook_t * iter;
 722     addr_t io_port_bitmap;
 723
 724     io_port_bitmap = (addr_t)os_hooks->allocate_pages(3);
 725     memset((uchar_t*)io_port_bitmap, 0, PAGE_SIZE * 3);
 726
 727     ctrl_area->IOPM_BASE_PA = io_port_bitmap;
 728
 729     //PrintDebug("Setting up IO Map at 0x%x\n", io_port_bitmap);
 730
 731     FOREACH_IO_HOOK(vm_info.io_map, iter) {
 732       ushort_t port = iter->port;
 733       uchar_t * bitmap = (uchar_t *)io_port_bitmap;
 734
 735       bitmap += (port / 8);
 736       PrintDebug("Setting Bit in block %x\n", bitmap);
 737       *bitmap |= 1 << (port % 8);
 738     }
 739
 740     ctrl_area->instrs.instrs.IOIO_PROT = 1;
 741   }
 742
 743   ctrl_area->instrs.instrs.INTR = 1;
 744
 745   // also determine if CPU supports nested paging
 746
 747   if (vm_info.page_mode == SHADOW_PAGING) {
 748     PrintDebug("Creating initial shadow page table\n");
 749     vm_info.shdw_pg_state.shadow_cr3.e_reg.low |= ((addr_t)create_passthrough_pde32_pts(&vm_info) & ~0xfff);
 750     PrintDebug("Created\n");
 751
 752     guest_state->cr3 = vm_info.shdw_pg_state.shadow_cr3.r_reg;
 753
 754     ctrl_area->cr_reads.crs.cr3 = 1;
 755     ctrl_area->cr_writes.crs.cr3 = 1;
 756     ctrl_area->cr_reads.crs.cr0 = 1;
 757     ctrl_area->cr_writes.crs.cr0 = 1;
 758
 759     ctrl_area->instrs.instrs.INVLPG = 1;
 760     ctrl_area->instrs.instrs.INVLPGA = 1;
 761
 762
 763     guest_state->g_pat = 0x7040600070406ULL;
 764
 765     vm_info.shdw_pg_state.guest_cr0.e_reg.low = guest_state->cr0;
 766     guest_state->cr0 |= 0x80000000;
 767   } else if (vm_info.page_mode == NESTED_PAGING) {
 768     // Flush the TLB on entries/exits
 769     //ctrl_area->TLB_CONTROL = 1;
 770
 771     // Enable Nested Paging
 772     //ctrl_area->NP_ENABLE = 1;
 773
 774     //PrintDebug("NP_Enable at 0x%x\n", &(ctrl_area->NP_ENABLE));
 775
 776         // Set the Nested Page Table pointer
 777     //    ctrl_area->N_CR3 = ((addr_t)vm_info.page_tables);
 778     // ctrl_area->N_CR3 = (addr_t)(vm_info.page_tables);
 779
 780     //   ctrl_area->N_CR3 = Get_CR3();
 781     // guest_state->cr3 |= (Get_CR3() & 0xfffff000);
 782
 783     //    guest_state->g_pat = 0x7040600070406ULL;
 784   }
 785
 786 }
 787 */