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 guest_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       if (info->cpu_mode == REAL) {
 167         linear_addr = get_addr_linear(info, guest_state->rip, guest_state->cs.selector);
 168       } else {
 169         linear_addr = get_addr_linear(info, guest_state->rip, guest_state->cs.base);
 170       }
 171
 172       PrintDebug("RIP Linear: %x\n", linear_addr);
 173
 174       guest_pa_to_host_pa(info, linear_addr, &host_addr);
 175
 176       PrintDebug("Host Address of rip = 0x%x\n", host_addr);
 177
 178       PrintDebug("Instr (15 bytes) at %x:\n", host_addr);
 179       PrintTraceMemDump((char*)host_addr, 15);
 180
 181       break;
 182     }
 183   }
 184   return 0;
 185 }
 186
 187
 188
 189 vmcb_t * Allocate_VMCB() {
 190   vmcb_t * vmcb_page = (vmcb_t*)os_hooks->allocate_pages(1);
 191
 192
 193   memset(vmcb_page, 0, 4096);
 194
 195   return vmcb_page;
 196 }
 197
 198
 199
 200 void Init_VMCB(vmcb_t * vmcb, struct guest_info vm_info) {
 201   vmcb_ctrl_t * ctrl_area = GET_VMCB_CTRL_AREA(vmcb);
 202   vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA(vmcb);
 203   uint_t i;
 204
 205
 206   guest_state->rsp = vm_info.vm_regs.rsp;
 207   guest_state->rip = vm_info.rip;
 208
 209
 210   //ctrl_area->instrs.instrs.CR0 = 1;
 211   ctrl_area->cr_reads.cr0 = 1;
 212   ctrl_area->cr_writes.cr0 = 1;
 213
 214   guest_state->efer |= EFER_MSR_svm_enable;
 215   guest_state->rflags = 0x00000002; // The reserved bit is always 1
 216   ctrl_area->svm_instrs.VMRUN = 1;
 217   // guest_state->cr0 = 0x00000001;    // PE
 218   ctrl_area->guest_ASID = 1;
 219
 220
 221   ctrl_area->exceptions.de = 1;
 222   ctrl_area->exceptions.df = 1;
 223   ctrl_area->exceptions.pf = 1;
 224   ctrl_area->exceptions.ts = 1;
 225   ctrl_area->exceptions.ss = 1;
 226   ctrl_area->exceptions.ac = 1;
 227   ctrl_area->exceptions.mc = 1;
 228   ctrl_area->exceptions.gp = 1;
 229   ctrl_area->exceptions.ud = 1;
 230   ctrl_area->exceptions.np = 1;
 231   ctrl_area->exceptions.of = 1;
 232   ctrl_area->exceptions.nmi = 1;
 233
 234   guest_state->cs.selector = 0x0000;
 235   guest_state->cs.limit=~0u;
 236   guest_state->cs.base = guest_state->cs.selector<<4;
 237   guest_state->cs.attrib.raw = 0xf3;
 238
 239
 240   struct vmcb_selector *segregs [] = {&(guest_state->ss), &(guest_state->ds), &(guest_state->es), &(guest_state->fs), &(guest_state->gs), NULL};
 241   for ( i = 0; segregs[i] != NULL; i++) {
 242     struct vmcb_selector * seg = segregs[i];
 243
 244     seg->selector = 0x0000;
 245     seg->base = seg->selector << 4;
 246     seg->attrib.raw = 0xf3;
 247     seg->limit = ~0u;
 248   }
 249
 250   if (vm_info.io_map.num_ports > 0) {
 251     vmm_io_hook_t * iter;
 252     addr_t io_port_bitmap;
 253
 254     io_port_bitmap = (addr_t)os_hooks->allocate_pages(3);
 255     memset((uchar_t*)io_port_bitmap, 0, PAGE_SIZE * 3);
 256
 257     ctrl_area->IOPM_BASE_PA = io_port_bitmap;
 258
 259     //PrintDebug("Setting up IO Map at 0x%x\n", io_port_bitmap);
 260
 261     FOREACH_IO_HOOK(vm_info.io_map, iter) {
 262       ushort_t port = iter->port;
 263       uchar_t * bitmap = (uchar_t *)io_port_bitmap;
 264
 265       bitmap += (port / 8);
 266       PrintDebug("Setting Bit in block %x\n", bitmap);
 267       *bitmap |= 1 << (port % 8);
 268     }
 269
 270
 271     //PrintDebugMemDump((uchar_t*)io_port_bitmap, PAGE_SIZE *2);
 272
 273     ctrl_area->instrs.IOIO_PROT = 1;
 274   }
 275
 276   ctrl_area->instrs.INTR = 1;
 277
 278
 279
 280   if (vm_info.page_mode == SHADOW_PAGING) {
 281     PrintDebug("Creating initial shadow page table\n");
 282     vm_info.shdw_pg_state.shadow_cr3 |= ((addr_t)create_passthrough_pde32_pts(&vm_info) & ~0xfff);
 283     PrintDebug("Created\n");
 284
 285     guest_state->cr3 = vm_info.shdw_pg_state.shadow_cr3;
 286
 287     ctrl_area->cr_reads.cr3 = 1;
 288     ctrl_area->cr_writes.cr3 = 1;
 289
 290
 291     ctrl_area->instrs.INVLPG = 1;
 292     ctrl_area->instrs.INVLPGA = 1;
 293
 294     guest_state->g_pat = 0x7040600070406ULL;
 295
 296     guest_state->cr0 |= 0x80000000;
 297   } else if (vm_info.page_mode == NESTED_PAGING) {
 298     // Flush the TLB on entries/exits
 299     //ctrl_area->TLB_CONTROL = 1;
 300
 301     // Enable Nested Paging
 302     //ctrl_area->NP_ENABLE = 1;
 303
 304     //PrintDebug("NP_Enable at 0x%x\n", &(ctrl_area->NP_ENABLE));
 305
 306         // Set the Nested Page Table pointer
 307     //    ctrl_area->N_CR3 = ((addr_t)vm_info.page_tables);
 308     // ctrl_area->N_CR3 = (addr_t)(vm_info.page_tables);
 309
 310     //   ctrl_area->N_CR3 = Get_CR3();
 311     // guest_state->cr3 |= (Get_CR3() & 0xfffff000);
 312
 313     //    guest_state->g_pat = 0x7040600070406ULL;
 314   }
 315
 316
 317
 318 }
 319
 320
 321
 322 void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info vm_info) {
 323   vmcb_ctrl_t * ctrl_area = GET_VMCB_CTRL_AREA(vmcb);
 324   vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA(vmcb);
 325   uint_t i;
 326
 327
 328   guest_state->rsp = vm_info.vm_regs.rsp;
 329   // guest_state->rip = vm_info.rip;
 330   guest_state->rip = 0xfff0;
 331
 332   //ctrl_area->instrs.instrs.CR0 = 1;
 333   ctrl_area->cr_reads.cr0 = 1;
 334   ctrl_area->cr_writes.cr0 = 1;
 335
 336   guest_state->efer |= EFER_MSR_svm_enable;
 337   guest_state->rflags = 0x00000002; // The reserved bit is always 1
 338   ctrl_area->svm_instrs.VMRUN = 1;
 339   ctrl_area->instrs.HLT = 1;
 340   // guest_state->cr0 = 0x00000001;    // PE
 341   ctrl_area->guest_ASID = 1;
 342
 343   ctrl_area->exceptions.de = 1;
 344   ctrl_area->exceptions.df = 1;
 345   ctrl_area->exceptions.pf = 1;
 346   ctrl_area->exceptions.ts = 1;
 347   ctrl_area->exceptions.ss = 1;
 348   ctrl_area->exceptions.ac = 1;
 349   ctrl_area->exceptions.mc = 1;
 350   ctrl_area->exceptions.gp = 1;
 351   ctrl_area->exceptions.ud = 1;
 352   ctrl_area->exceptions.np = 1;
 353   ctrl_area->exceptions.of = 1;
 354   ctrl_area->exceptions.nmi = 1;
 355
 356   vm_info.vm_regs.rdx = 0x00000f00;
 357
 358   guest_state->cr0 = 0x60000010;
 359
 360   guest_state->cs.selector = 0xf000;
 361   guest_state->cs.limit=0xffff;
 362   guest_state->cs.base = 0x0000000f0000LL;
 363   guest_state->cs.attrib.raw = 0xf3;
 364
 365
 366   struct vmcb_selector *segregs [] = {&(guest_state->ss), &(guest_state->ds), &(guest_state->es), &(guest_state->fs), &(guest_state->gs), NULL};
 367   for ( i = 0; segregs[i] != NULL; i++) {
 368     struct vmcb_selector * seg = segregs[i];
 369
 370     seg->selector = 0x0000;
 371     //    seg->base = seg->selector << 4;
 372     seg->base = 0x00000000;
 373     seg->attrib.raw = 0xf3;
 374     seg->limit = ~0u;
 375   }
 376
 377   guest_state->gdtr.limit = 0x0000ffff;
 378   guest_state->gdtr.base = 0x0000000000000000LL;
 379   guest_state->idtr.limit = 0x0000ffff;
 380   guest_state->idtr.base = 0x0000000000000000LL;
 381
 382   guest_state->ldtr.selector = 0x0000;
 383   guest_state->ldtr.limit = 0x0000ffff;
 384   guest_state->ldtr.base = 0x0000000000000000LL;
 385   guest_state->tr.selector = 0x0000;
 386   guest_state->tr.limit = 0x0000ffff;
 387   guest_state->tr.base = 0x0000000000000000LL;
 388
 389
 390   guest_state->dr6 = 0x00000000ffff0ff0LL;
 391   guest_state->dr7 = 0x0000000000000400LL;
 392
 393   if (vm_info.io_map.num_ports > 0) {
 394     vmm_io_hook_t * iter;
 395     addr_t io_port_bitmap;
 396
 397     io_port_bitmap = (addr_t)os_hooks->allocate_pages(3);
 398     memset((uchar_t*)io_port_bitmap, 0, PAGE_SIZE * 3);
 399
 400     ctrl_area->IOPM_BASE_PA = io_port_bitmap;
 401
 402     //PrintDebug("Setting up IO Map at 0x%x\n", io_port_bitmap);
 403
 404     FOREACH_IO_HOOK(vm_info.io_map, iter) {
 405       ushort_t port = iter->port;
 406       uchar_t * bitmap = (uchar_t *)io_port_bitmap;
 407
 408       bitmap += (port / 8);
 409       PrintDebug("Setting Bit for port 0x%x\n", port);
 410       *bitmap |= 1 << (port % 8);
 411     }
 412
 413
 414     //PrintDebugMemDump((uchar_t*)io_port_bitmap, PAGE_SIZE *2);
 415
 416     ctrl_area->instrs.IOIO_PROT = 1;
 417   }
 418
 419
 420
 421   PrintDebug("Exiting on interrupts\n");
 422   ctrl_area->guest_ctrl.V_INTR_MASKING = 1;
 423   ctrl_area->instrs.INTR = 1;
 424
 425
 426   if (vm_info.page_mode == SHADOW_PAGING) {
 427     PrintDebug("Creating initial shadow page table\n");
 428     vm_info.shdw_pg_state.shadow_cr3 |= ((addr_t)create_passthrough_pde32_pts(&vm_info) & ~0xfff);
 429     PrintDebug("Created\n");
 430
 431     guest_state->cr3 = vm_info.shdw_pg_state.shadow_cr3;
 432
 433     //PrintDebugPageTables((pde32_t*)(vm_info.shdw_pg_state.shadow_cr3.e_reg.low));
 434
 435     ctrl_area->cr_reads.cr3 = 1;
 436     ctrl_area->cr_writes.cr3 = 1;
 437
 438
 439     ctrl_area->instrs.INVLPG = 1;
 440     ctrl_area->instrs.INVLPGA = 1;
 441
 442     guest_state->g_pat = 0x7040600070406ULL;
 443
 444     guest_state->cr0 |= 0x80000000;
 445   } else if (vm_info.page_mode == NESTED_PAGING) {
 446     // Flush the TLB on entries/exits
 447     //ctrl_area->TLB_CONTROL = 1;
 448
 449     // Enable Nested Paging
 450     //ctrl_area->NP_ENABLE = 1;
 451
 452     //PrintDebug("NP_Enable at 0x%x\n", &(ctrl_area->NP_ENABLE));
 453
 454         // Set the Nested Page Table pointer
 455     //    ctrl_area->N_CR3 = ((addr_t)vm_info.page_tables);
 456     // ctrl_area->N_CR3 = (addr_t)(vm_info.page_tables);
 457
 458     //   ctrl_area->N_CR3 = Get_CR3();
 459     // guest_state->cr3 |= (Get_CR3() & 0xfffff000);
 460
 461     //    guest_state->g_pat = 0x7040600070406ULL;
 462   }
 463
 464
 465
 466 }
 467
 468
 469 #if 0
 470 void Init_VMCB_pe(vmcb_t *vmcb, struct guest_info vm_info) {
 471   vmcb_ctrl_t * ctrl_area = GET_VMCB_CTRL_AREA(vmcb);
 472   vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA(vmcb);
 473   uint_t i = 0;
 474
 475
 476   guest_state->rsp = vm_info.vm_regs.rsp;
 477   guest_state->rip = vm_info.rip;
 478
 479
 480   /* I pretty much just gutted this from TVMM */
 481   /* Note: That means its probably wrong */
 482
 483   // set the segment registers to mirror ours
 484   guest_state->cs.selector = 1<<3;
 485   guest_state->cs.attrib.fields.type = 0xa; // Code segment+read
 486   guest_state->cs.attrib.fields.S = 1;
 487   guest_state->cs.attrib.fields.P = 1;
 488   guest_state->cs.attrib.fields.db = 1;
 489   guest_state->cs.attrib.fields.G = 1;
 490   guest_state->cs.limit = 0xfffff;
 491   guest_state->cs.base = 0;
 492
 493   struct vmcb_selector *segregs [] = {&(guest_state->ss), &(guest_state->ds), &(guest_state->es), &(guest_state->fs), &(guest_state->gs), NULL};
 494   for ( i = 0; segregs[i] != NULL; i++) {
 495     struct vmcb_selector * seg = segregs[i];
 496
 497     seg->selector = 2<<3;
 498     seg->attrib.fields.type = 0x2; // Data Segment+read/write
 499     seg->attrib.fields.S = 1;
 500     seg->attrib.fields.P = 1;
 501     seg->attrib.fields.db = 1;
 502     seg->attrib.fields.G = 1;
 503     seg->limit = 0xfffff;
 504     seg->base = 0;
 505   }
 506
 507
 508   {
 509     /* JRL THIS HAS TO GO */
 510
 511     //    guest_state->tr.selector = GetTR_Selector();
 512     guest_state->tr.attrib.fields.type = 0x9;
 513     guest_state->tr.attrib.fields.P = 1;
 514     // guest_state->tr.limit = GetTR_Limit();
 515     //guest_state->tr.base = GetTR_Base();// - 0x2000;
 516     /* ** */
 517   }
 518
 519
 520   /* ** */
 521
 522
 523   guest_state->efer |= EFER_MSR_svm_enable;
 524   guest_state->rflags = 0x00000002; // The reserved bit is always 1
 525   ctrl_area->svm_instrs.VMRUN = 1;
 526   guest_state->cr0 = 0x00000001;    // PE
 527   ctrl_area->guest_ASID = 1;
 528
 529
 530   //  guest_state->cpl = 0;
 531
 532
 533
 534   // Setup exits
 535
 536   ctrl_area->cr_writes.cr4 = 1;
 537
 538   ctrl_area->exceptions.de = 1;
 539   ctrl_area->exceptions.df = 1;
 540   ctrl_area->exceptions.pf = 1;
 541   ctrl_area->exceptions.ts = 1;
 542   ctrl_area->exceptions.ss = 1;
 543   ctrl_area->exceptions.ac = 1;
 544   ctrl_area->exceptions.mc = 1;
 545   ctrl_area->exceptions.gp = 1;
 546   ctrl_area->exceptions.ud = 1;
 547   ctrl_area->exceptions.np = 1;
 548   ctrl_area->exceptions.of = 1;
 549   ctrl_area->exceptions.nmi = 1;
 550
 551
 552
 553   ctrl_area->instrs.IOIO_PROT = 1;
 554   ctrl_area->IOPM_BASE_PA = (uint_t)os_hooks->allocate_pages(3);
 555
 556   {
 557     reg_ex_t tmp_reg;
 558     tmp_reg.r_reg = ctrl_area->IOPM_BASE_PA;
 559     memset((void*)(tmp_reg.e_reg.low), 0xffffffff, PAGE_SIZE * 2);
 560   }
 561
 562   ctrl_area->instrs.INTR = 1;
 563
 564
 565   {
 566     char gdt_buf[6];
 567     char idt_buf[6];
 568
 569     memset(gdt_buf, 0, 6);
 570     memset(idt_buf, 0, 6);
 571
 572
 573     uint_t gdt_base, idt_base;
 574     ushort_t gdt_limit, idt_limit;
 575
 576     GetGDTR(gdt_buf);
 577     gdt_base = *(ulong_t*)((uchar_t*)gdt_buf + 2) & 0xffffffff;
 578     gdt_limit = *(ushort_t*)(gdt_buf) & 0xffff;
 579     PrintDebug("GDT: base: %x, limit: %x\n", gdt_base, gdt_limit);
 580
 581     GetIDTR(idt_buf);
 582     idt_base = *(ulong_t*)(idt_buf + 2) & 0xffffffff;
 583     idt_limit = *(ushort_t*)(idt_buf) & 0xffff;
 584     PrintDebug("IDT: base: %x, limit: %x\n",idt_base, idt_limit);
 585
 586
 587     // gdt_base -= 0x2000;
 588     //idt_base -= 0x2000;
 589
 590     guest_state->gdtr.base = gdt_base;
 591     guest_state->gdtr.limit = gdt_limit;
 592     guest_state->idtr.base = idt_base;
 593     guest_state->idtr.limit = idt_limit;
 594
 595
 596   }
 597
 598
 599   // also determine if CPU supports nested paging
 600   /*
 601   if (vm_info.page_tables) {
 602     //   if (0) {
 603     // Flush the TLB on entries/exits
 604     ctrl_area->TLB_CONTROL = 1;
 605
 606     // Enable Nested Paging
 607     ctrl_area->NP_ENABLE = 1;
 608
 609     PrintDebug("NP_Enable at 0x%x\n", &(ctrl_area->NP_ENABLE));
 610
 611         // Set the Nested Page Table pointer
 612     ctrl_area->N_CR3 |= ((addr_t)vm_info.page_tables & 0xfffff000);
 613
 614
 615     //   ctrl_area->N_CR3 = Get_CR3();
 616     // guest_state->cr3 |= (Get_CR3() & 0xfffff000);
 617
 618     guest_state->g_pat = 0x7040600070406ULL;
 619
 620     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));
 621     PrintDebug("Set Guest CR3: lo: 0x%x  hi: 0x%x\n", (uint_t)*(&(guest_state->cr3)), (uint_t)*((unsigned char *)&(guest_state->cr3) + 4));
 622     // Enable Paging
 623     //    guest_state->cr0 |= 0x80000000;
 624   }
 625   */
 626
 627 }
 628
 629
 630
 631
 632
 633 #endif
 634
 635
 636
 637
 638
 639
 640
 641
 642
 643
 644
 645
 646
 647
 648 /*
 649
 650
 651 void Init_VMCB_Real(vmcb_t * vmcb, struct guest_info vm_info) {
 652   vmcb_ctrl_t * ctrl_area = GET_VMCB_CTRL_AREA(vmcb);
 653   vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA(vmcb);
 654   uint_t i;
 655
 656
 657   guest_state->rsp = vm_info.vm_regs.rsp;
 658   guest_state->rip = vm_info.rip;
 659
 660
 661   guest_state->efer |= EFER_MSR_svm_enable;
 662   guest_state->rflags = 0x00000002; // The reserved bit is always 1
 663   ctrl_area->svm_instrs.instrs.VMRUN = 1;
 664   ctrl_area->guest_ASID = 1;
 665   guest_state->cr0 = 0x60000010;
 666
 667
 668   ctrl_area->exceptions.de = 1;
 669   ctrl_area->exceptions.df = 1;
 670   ctrl_area->exceptions.pf = 1;
 671   ctrl_area->exceptions.ts = 1;
 672   ctrl_area->exceptions.ss = 1;
 673   ctrl_area->exceptions.ac = 1;
 674   ctrl_area->exceptions.mc = 1;
 675   ctrl_area->exceptions.gp = 1;
 676   ctrl_area->exceptions.ud = 1;
 677   ctrl_area->exceptions.np = 1;
 678   ctrl_area->exceptions.of = 1;
 679   ctrl_area->exceptions.nmi = 1;
 680
 681   guest_state->cs.selector = 0xf000;
 682   guest_state->cs.limit=0xffff;
 683   guest_state->cs.base =  0xffff0000;
 684   guest_state->cs.attrib.raw = 0x9a;
 685
 686
 687   struct vmcb_selector *segregs [] = {&(guest_state->ss), &(guest_state->ds), &(guest_state->es), &(guest_state->fs), &(guest_state->gs), NULL};
 688   for ( i = 0; segregs[i] != NULL; i++) {
 689     struct vmcb_selector * seg = segregs[i];
 690
 691     seg->selector = 0x0000;
 692     seg->base = 0xffff0000;
 693     seg->attrib.raw = 0x9b;
 694     seg->limit = 0xffff;
 695   }
 696
 697   // Set GPRs
 698   //
 699   //  EDX == 0xfxx
 700   //  EAX, EBX, ECX, ESI, EDI, EBP, ESP == 0x0
 701   //
 702
 703   guest_state->gdtr.base = 0;
 704   guest_state->gdtr.limit = 0xffff;
 705   guest_state->gdtr.attrib.raw = 0x0;
 706
 707   guest_state->idtr.base = 0;
 708   guest_state->idtr.limit = 0xffff;
 709   guest_state->idtr.attrib.raw = 0x0;
 710
 711   guest_state->ldtr.base = 0;
 712   guest_state->ldtr.limit = 0xffff;
 713   guest_state->ldtr.attrib.raw = 0x82;
 714
 715   guest_state->tr.base = 0;
 716   guest_state->tr.limit = 0xffff;
 717   guest_state->tr.attrib.raw = 0x83;
 718
 719
 720
 721
 722   if (vm_info.io_map.num_ports > 0) {
 723     vmm_io_hook_t * iter;
 724     addr_t io_port_bitmap;
 725
 726     io_port_bitmap = (addr_t)os_hooks->allocate_pages(3);
 727     memset((uchar_t*)io_port_bitmap, 0, PAGE_SIZE * 3);
 728
 729     ctrl_area->IOPM_BASE_PA = io_port_bitmap;
 730
 731     //PrintDebug("Setting up IO Map at 0x%x\n", io_port_bitmap);
 732
 733     FOREACH_IO_HOOK(vm_info.io_map, iter) {
 734       ushort_t port = iter->port;
 735       uchar_t * bitmap = (uchar_t *)io_port_bitmap;
 736
 737       bitmap += (port / 8);
 738       PrintDebug("Setting Bit in block %x\n", bitmap);
 739       *bitmap |= 1 << (port % 8);
 740     }
 741
 742     ctrl_area->instrs.instrs.IOIO_PROT = 1;
 743   }
 744
 745   ctrl_area->instrs.instrs.INTR = 1;
 746
 747   // also determine if CPU supports nested paging
 748
 749   if (vm_info.page_mode == SHADOW_PAGING) {
 750     PrintDebug("Creating initial shadow page table\n");
 751     vm_info.shdw_pg_state.shadow_cr3.e_reg.low |= ((addr_t)create_passthrough_pde32_pts(&vm_info) & ~0xfff);
 752     PrintDebug("Created\n");
 753
 754     guest_state->cr3 = vm_info.shdw_pg_state.shadow_cr3.r_reg;
 755
 756     ctrl_area->cr_reads.crs.cr3 = 1;
 757     ctrl_area->cr_writes.crs.cr3 = 1;
 758     ctrl_area->cr_reads.crs.cr0 = 1;
 759     ctrl_area->cr_writes.crs.cr0 = 1;
 760
 761     ctrl_area->instrs.instrs.INVLPG = 1;
 762     ctrl_area->instrs.instrs.INVLPGA = 1;
 763
 764
 765     guest_state->g_pat = 0x7040600070406ULL;
 766
 767     vm_info.shdw_pg_state.guest_cr0.e_reg.low = guest_state->cr0;
 768     guest_state->cr0 |= 0x80000000;
 769   } else if (vm_info.page_mode == NESTED_PAGING) {
 770     // Flush the TLB on entries/exits
 771     //ctrl_area->TLB_CONTROL = 1;
 772
 773     // Enable Nested Paging
 774     //ctrl_area->NP_ENABLE = 1;
 775
 776     //PrintDebug("NP_Enable at 0x%x\n", &(ctrl_area->NP_ENABLE));
 777
 778         // Set the Nested Page Table pointer
 779     //    ctrl_area->N_CR3 = ((addr_t)vm_info.page_tables);
 780     // ctrl_area->N_CR3 = (addr_t)(vm_info.page_tables);
 781
 782     //   ctrl_area->N_CR3 = Get_CR3();
 783     // guest_state->cr3 |= (Get_CR3() & 0xfffff000);
 784
 785     //    guest_state->g_pat = 0x7040600070406ULL;
 786   }
 787
 788 }
 789 */