Palacios Public Git Repository

To checkout Palacios execute

  git clone http://v3vee.org/palacios/palacios.web/palacios.git
This will give you the master branch. You probably want the devel branch or one of the release branches. To switch to the devel branch, simply execute
  cd palacios
  git checkout --track -b devel origin/devel
The other branches are similar.


large change to break apart the guest operation mode parameters
[palacios.git] / palacios / src / palacios / svm.c
index 077e95c..1a9f1b8 100644 (file)
@@ -9,6 +9,7 @@
 #include <palacios/vmm_debug.h>
 #include <palacios/vm_guest_mem.h>
 
+#include <palacios/vmm_decoder.h>
 
 
 extern struct vmm_os_hooks * os_hooks;
@@ -18,7 +19,7 @@ extern uint_t cpuid_edx(uint_t op);
 extern void Get_MSR(uint_t MSR, uint_t * high_byte, uint_t * low_byte); 
 extern void Set_MSR(uint_t MSR, uint_t high_byte, uint_t low_byte);
 extern uint_t launch_svm(vmcb_t * vmcb_addr);
-extern void safe_svm_launch(vmcb_t * vmcb_addr, struct guest_gprs * gprs);
+extern void safe_svm_launch(vmcb_t * vmcb_addr, struct v3_gprs * gprs);
 
 extern void STGI();
 extern void CLGI();
@@ -28,138 +29,13 @@ extern uint_t Get_CR3();
 
 extern void DisableInts();
 
-/* Checks machine SVM capability */
-/* Implemented from: AMD Arch Manual 3, sect 15.4 */ 
-int is_svm_capable() {
-  uint_t ret =  cpuid_ecx(CPUID_FEATURE_IDS);
-  uint_t vm_cr_low = 0, vm_cr_high = 0;
-
-
-  if ((ret & CPUID_FEATURE_IDS_ecx_svm_avail) == 0) {
-    PrintDebug("SVM Not Available\n");
-    return 0;
-  } 
-
-  Get_MSR(SVM_VM_CR_MSR, &vm_cr_high, &vm_cr_low);
-
-  if ((ret & CPUID_SVM_REV_AND_FEATURE_IDS_edx_np) == 1) {
-    PrintDebug("Nested Paging not supported\n");
-  }
-
-  if ((vm_cr_low & SVM_VM_CR_MSR_svmdis) == 0) {
-    return 1;
-  }
-
-  ret = cpuid_edx(CPUID_SVM_REV_AND_FEATURE_IDS);
-
-  if ((ret & CPUID_SVM_REV_AND_FEATURE_IDS_edx_svml) == 0) {
-    PrintDebug("SVM BIOS Disabled, not unlockable\n");
-  } else {
-    PrintDebug("SVM is locked with a key\n");
-  }
-
-  return 0;
-}
-
-
-
-void Init_SVM(struct vmm_ctrl_ops * vmm_ops) {
-  reg_ex_t msr;
-  void * host_state;
-
-
-  // Enable SVM on the CPU
-  Get_MSR(EFER_MSR, &(msr.e_reg.high), &(msr.e_reg.low));
-  msr.e_reg.low |= EFER_MSR_svm_enable;
-  Set_MSR(EFER_MSR, 0, msr.e_reg.low);
-  
-  PrintDebug("SVM Enabled\n");
-
-
-  // Setup the host state save area
-  host_state = os_hooks->allocate_pages(4);
-  
-  msr.e_reg.high = 0;
-  msr.e_reg.low = (uint_t)host_state;
-
-
-  PrintDebug("Host State being saved at %x\n", (uint_t)host_state);
-  Set_MSR(SVM_VM_HSAVE_PA_MSR, msr.e_reg.high, msr.e_reg.low);
-
-
-
-  // Setup the SVM specific vmm operations
-  vmm_ops->init_guest = &init_svm_guest;
-  vmm_ops->start_guest = &start_svm_guest;
-
-
-  return;
-}
-
-
-int init_svm_guest(struct guest_info *info) {
-  PrintDebug("Allocating VMCB\n");
-  info->vmm_data = (void*)Allocate_VMCB();
-
-
-  //PrintDebug("Generating Guest nested page tables\n");
-  //  info->page_tables = NULL;
-  //info->page_tables = generate_guest_page_tables_64(&(info->mem_layout), &(info->mem_list));
-  //info->page_tables = generate_guest_page_tables(&(info->mem_layout), &(info->mem_list));
-  //  PrintDebugPageTables(info->page_tables);
-
-
-  PrintDebug("Initializing VMCB (addr=%x)\n", info->vmm_data);
-  Init_VMCB_BIOS((vmcb_t*)(info->vmm_data), *info);
-  
-
-  //  info->rip = 0;
-
-  info->vm_regs.rdi = 0;
-  info->vm_regs.rsi = 0;
-  info->vm_regs.rbp = 0;
-  info->vm_regs.rsp = 0;
-  info->vm_regs.rbx = 0;
-  info->vm_regs.rdx = 0;
-  info->vm_regs.rcx = 0;
-  info->vm_regs.rax = 0;
-  
-  return 0;
-}
-
 
-// can we start a kernel thread here...
-int start_svm_guest(struct guest_info *info) {
 
 
 
-  PrintDebug("Launching SVM VM (vmcb=%x)\n", info->vmm_data);
-  //PrintDebugVMCB((vmcb_t*)(info->vmm_data));
-
-  while (1) {
-
-    CLGI();
-
-    //PrintDebug("SVM Launch Args (vmcb=%x), (info=%x), (vm_regs=%x)\n", info->vmm_data,  &(info->vm_regs));
-    //PrintDebug("Launching to RIP: %x\n", info->rip);
-    safe_svm_launch((vmcb_t*)(info->vmm_data), &(info->vm_regs));
-    //launch_svm((vmcb_t*)(info->vmm_data));
-    // PrintDebug("SVM Returned\n");
 
-    STGI();
-    
-    if (handle_svm_exit(info) != 0) {
-      PrintDebug("SVM ERROR!!\n");
-      break;
-    }
-  }
-  return 0;
-}
 
-
-
-vmcb_t * Allocate_VMCB() {
+static vmcb_t * Allocate_VMCB() {
   vmcb_t * vmcb_page = (vmcb_t*)os_hooks->allocate_pages(1);
 
 
@@ -170,15 +46,19 @@ vmcb_t * Allocate_VMCB() {
 
 
 
-void Init_VMCB(vmcb_t * vmcb, struct guest_info vm_info) {
+
+
+static void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info vm_info) {
   vmcb_ctrl_t * ctrl_area = GET_VMCB_CTRL_AREA(vmcb);
   vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA(vmcb);
   uint_t i;
 
 
   guest_state->rsp = vm_info.vm_regs.rsp;
-  guest_state->rip = vm_info.rip;
+  // guest_state->rip = vm_info.rip;
+  guest_state->rip = 0xfff0;
 
+  guest_state->cpl = 0;
 
   //ctrl_area->instrs.instrs.CR0 = 1;
   ctrl_area->cr_reads.cr0 = 1;
@@ -187,10 +67,10 @@ void Init_VMCB(vmcb_t * vmcb, struct guest_info vm_info) {
   guest_state->efer |= EFER_MSR_svm_enable;
   guest_state->rflags = 0x00000002; // The reserved bit is always 1
   ctrl_area->svm_instrs.VMRUN = 1;
+  ctrl_area->instrs.HLT = 1;
   // guest_state->cr0 = 0x00000001;    // PE 
   ctrl_area->guest_ASID = 1;
 
-
   ctrl_area->exceptions.de = 1;
   ctrl_area->exceptions.df = 1;
   ctrl_area->exceptions.pf = 1;
@@ -204,9 +84,13 @@ void Init_VMCB(vmcb_t * vmcb, struct guest_info vm_info) {
   ctrl_area->exceptions.of = 1;
   ctrl_area->exceptions.nmi = 1;
 
-  guest_state->cs.selector = 0x0000;
-  guest_state->cs.limit=~0u;
-  guest_state->cs.base = guest_state->cs.selector<<4;
+  vm_info.vm_regs.rdx = 0x00000f00;
+
+  guest_state->cr0 = 0x60000010;
+
+  guest_state->cs.selector = 0xf000;
+  guest_state->cs.limit=0xffff;
+  guest_state->cs.base = 0x0000000f0000LL;
   guest_state->cs.attrib.raw = 0xf3;
 
   
@@ -215,11 +99,28 @@ void Init_VMCB(vmcb_t * vmcb, struct guest_info vm_info) {
     struct vmcb_selector * seg = segregs[i];
     
     seg->selector = 0x0000;
-    seg->base = seg->selector << 4;
+    //    seg->base = seg->selector << 4;
+    seg->base = 0x00000000;
     seg->attrib.raw = 0xf3;
     seg->limit = ~0u;
   }
   
+  guest_state->gdtr.limit = 0x0000ffff;
+  guest_state->gdtr.base = 0x0000000000000000LL;
+  guest_state->idtr.limit = 0x0000ffff;
+  guest_state->idtr.base = 0x0000000000000000LL;
+
+  guest_state->ldtr.selector = 0x0000;
+  guest_state->ldtr.limit = 0x0000ffff;
+  guest_state->ldtr.base = 0x0000000000000000LL;
+  guest_state->tr.selector = 0x0000;
+  guest_state->tr.limit = 0x0000ffff;
+  guest_state->tr.base = 0x0000000000000000LL;
+
+
+  guest_state->dr6 = 0x00000000ffff0ff0LL;
+  guest_state->dr7 = 0x0000000000000400LL;
+
   if (vm_info.io_map.num_ports > 0) {
     vmm_io_hook_t * iter;
     addr_t io_port_bitmap;
@@ -236,7 +137,7 @@ void Init_VMCB(vmcb_t * vmcb, struct guest_info vm_info) {
       uchar_t * bitmap = (uchar_t *)io_port_bitmap;
 
       bitmap += (port / 8);
-      PrintDebug("Setting Bit in block %x\n", bitmap);
+      PrintDebug("Setting Bit for port 0x%x\n", port);
       *bitmap |= 1 << (port % 8);
     }
 
@@ -246,16 +147,21 @@ void Init_VMCB(vmcb_t * vmcb, struct guest_info vm_info) {
     ctrl_area->instrs.IOIO_PROT = 1;
   }
 
-  ctrl_area->instrs.INTR = 1;
 
 
+  PrintDebug("Exiting on interrupts\n");
+  ctrl_area->guest_ctrl.V_INTR_MASKING = 1;
+  ctrl_area->instrs.INTR = 1;
+
 
-  if (vm_info.page_mode == SHADOW_PAGING) {
+  if (vm_info.shdw_pg_mode == SHADOW_PAGING) {
     PrintDebug("Creating initial shadow page table\n");
-    vm_info.shdw_pg_state.shadow_cr3.e_reg.low |= ((addr_t)create_passthrough_pde32_pts(&vm_info) & ~0xfff);
+    vm_info.shdw_pg_state.shadow_cr3 |= ((addr_t)create_passthrough_pde32_pts(&vm_info) & ~0xfff);
     PrintDebug("Created\n");
 
-    guest_state->cr3 = vm_info.shdw_pg_state.shadow_cr3.r_reg;
+    guest_state->cr3 = vm_info.shdw_pg_state.shadow_cr3;
+
+    //PrintDebugPageTables((pde32_t*)(vm_info.shdw_pg_state.shadow_cr3.e_reg.low));
 
     ctrl_area->cr_reads.cr3 = 1;
     ctrl_area->cr_writes.cr3 = 1;
@@ -267,7 +173,7 @@ void Init_VMCB(vmcb_t * vmcb, struct guest_info vm_info) {
     guest_state->g_pat = 0x7040600070406ULL;
 
     guest_state->cr0 |= 0x80000000;
-  } else if (vm_info.page_mode == NESTED_PAGING) {
+  } else if (vm_info.shdw_pg_mode == NESTED_PAGING) {
     // Flush the TLB on entries/exits
     //ctrl_area->TLB_CONTROL = 1;
 
@@ -292,15 +198,239 @@ void Init_VMCB(vmcb_t * vmcb, struct guest_info vm_info) {
 
 
 
-void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info vm_info) {
+
+
+
+
+
+
+static int init_svm_guest(struct guest_info *info) {
+  PrintDebug("Allocating VMCB\n");
+  info->vmm_data = (void*)Allocate_VMCB();
+
+
+  //PrintDebug("Generating Guest nested page tables\n");
+  //  info->page_tables = NULL;
+  //info->page_tables = generate_guest_page_tables_64(&(info->mem_layout), &(info->mem_list));
+  //info->page_tables = generate_guest_page_tables(&(info->mem_layout), &(info->mem_list));
+  //  PrintDebugPageTables(info->page_tables);
+
+
+  PrintDebug("Initializing VMCB (addr=%x)\n", info->vmm_data);
+  Init_VMCB_BIOS((vmcb_t*)(info->vmm_data), *info);
+  
+
+  //  info->rip = 0;
+
+  info->vm_regs.rdi = 0;
+  info->vm_regs.rsi = 0;
+  info->vm_regs.rbp = 0;
+  info->vm_regs.rsp = 0;
+  info->vm_regs.rbx = 0;
+  info->vm_regs.rdx = 0;
+  info->vm_regs.rcx = 0;
+  info->vm_regs.rax = 0;
+  
+  return 0;
+}
+
+
+// can we start a kernel thread here...
+static int start_svm_guest(struct guest_info *info) {
+  vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA((vmcb_t*)(info->vmm_data));
+  vmcb_ctrl_t * guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
+
+  PrintDebug("Launching SVM VM (vmcb=%x)\n", info->vmm_data);
+  //PrintDebugVMCB((vmcb_t*)(info->vmm_data));
+
+  while (1) {
+    ullong_t tmp_tsc;
+
+
+    CLGI();
+
+    //  PrintDebug("SVM Entry...\n");
+
+    rdtscll(info->time_state.cached_host_tsc);
+    guest_ctrl->TSC_OFFSET = info->time_state.guest_tsc - info->time_state.cached_host_tsc;
+
+    safe_svm_launch((vmcb_t*)(info->vmm_data), &(info->vm_regs));
+
+    rdtscll(tmp_tsc);
+    //PrintDebug("SVM Returned\n");
+
+
+    v3_update_time(info, tmp_tsc - info->time_state.cached_host_tsc);
+
+    STGI();
+
+     
+    if (handle_svm_exit(info) != 0) {
+
+      addr_t host_addr;
+      addr_t linear_addr = 0;
+
+      PrintDebug("SVM ERROR!!\n"); 
+      
+      PrintDebug("RIP: %x\n", guest_state->rip);
+
+
+      linear_addr = get_addr_linear(info, guest_state->rip, &(info->segments.cs));
+
+
+      PrintDebug("RIP Linear: %x\n", linear_addr);
+
+      
+      if (info->mem_mode == PHYSICAL_MEM) {
+       guest_pa_to_host_pa(info, linear_addr, &host_addr);
+      } else if (info->mem_mode == VIRTUAL_MEM) {
+       guest_va_to_host_pa(info, linear_addr, &host_addr);
+      }
+
+
+      PrintDebug("Host Address of rip = 0x%x\n", host_addr);
+
+      PrintDebug("Instr (15 bytes) at %x:\n", host_addr);
+      PrintTraceMemDump((char*)host_addr, 15);
+
+      break;
+    }
+  }
+  return 0;
+}
+
+
+
+
+/* Checks machine SVM capability */
+/* Implemented from: AMD Arch Manual 3, sect 15.4 */ 
+int is_svm_capable() {
+  uint_t ret =  cpuid_ecx(CPUID_FEATURE_IDS);
+  uint_t vm_cr_low = 0, vm_cr_high = 0;
+
+
+  if ((ret & CPUID_FEATURE_IDS_ecx_svm_avail) == 0) {
+    PrintDebug("SVM Not Available\n");
+    return 0;
+  } 
+
+  Get_MSR(SVM_VM_CR_MSR, &vm_cr_high, &vm_cr_low);
+
+  if ((ret & CPUID_SVM_REV_AND_FEATURE_IDS_edx_np) == 1) {
+    PrintDebug("Nested Paging not supported\n");
+  }
+
+  if ((vm_cr_low & SVM_VM_CR_MSR_svmdis) == 0) {
+    return 1;
+  }
+
+  ret = cpuid_edx(CPUID_SVM_REV_AND_FEATURE_IDS);
+
+  if ((ret & CPUID_SVM_REV_AND_FEATURE_IDS_edx_svml) == 0) {
+    PrintDebug("SVM BIOS Disabled, not unlockable\n");
+  } else {
+    PrintDebug("SVM is locked with a key\n");
+  }
+
+  return 0;
+}
+
+
+
+void Init_SVM(struct vmm_ctrl_ops * vmm_ops) {
+  reg_ex_t msr;
+  void * host_state;
+
+
+  // Enable SVM on the CPU
+  Get_MSR(EFER_MSR, &(msr.e_reg.high), &(msr.e_reg.low));
+  msr.e_reg.low |= EFER_MSR_svm_enable;
+  Set_MSR(EFER_MSR, 0, msr.e_reg.low);
+  
+  PrintDebug("SVM Enabled\n");
+
+
+  // Setup the host state save area
+  host_state = os_hooks->allocate_pages(4);
+  
+  msr.e_reg.high = 0;
+  msr.e_reg.low = (uint_t)host_state;
+
+
+  PrintDebug("Host State being saved at %x\n", (uint_t)host_state);
+  Set_MSR(SVM_VM_HSAVE_PA_MSR, msr.e_reg.high, msr.e_reg.low);
+
+
+
+  // Setup the SVM specific vmm operations
+  vmm_ops->init_guest = &init_svm_guest;
+  vmm_ops->start_guest = &start_svm_guest;
+
+
+  return;
+}
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+/*static void Init_VMCB(vmcb_t * vmcb, struct guest_info vm_info) {
   vmcb_ctrl_t * ctrl_area = GET_VMCB_CTRL_AREA(vmcb);
   vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA(vmcb);
   uint_t i;
 
 
   guest_state->rsp = vm_info.vm_regs.rsp;
-  // guest_state->rip = vm_info.rip;
-  guest_state->rip = 0xfff0;
+  guest_state->rip = vm_info.rip;
+
 
   //ctrl_area->instrs.instrs.CR0 = 1;
   ctrl_area->cr_reads.cr0 = 1;
@@ -312,6 +442,7 @@ void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info vm_info) {
   // guest_state->cr0 = 0x00000001;    // PE 
   ctrl_area->guest_ASID = 1;
 
+
   ctrl_area->exceptions.de = 1;
   ctrl_area->exceptions.df = 1;
   ctrl_area->exceptions.pf = 1;
@@ -325,13 +456,9 @@ void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info vm_info) {
   ctrl_area->exceptions.of = 1;
   ctrl_area->exceptions.nmi = 1;
 
-  vm_info.vm_regs.rdx = 0x00000f00;
-
-  guest_state->cr0 = 0x60000010;
-
-  guest_state->cs.selector = 0xf000;
-  guest_state->cs.limit=0xffff;
-  guest_state->cs.base = 0x0000000f0000LL;
+  guest_state->cs.selector = 0x0000;
+  guest_state->cs.limit=~0u;
+  guest_state->cs.base = guest_state->cs.selector<<4;
   guest_state->cs.attrib.raw = 0xf3;
 
   
@@ -340,28 +467,11 @@ void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info vm_info) {
     struct vmcb_selector * seg = segregs[i];
     
     seg->selector = 0x0000;
-    //    seg->base = seg->selector << 4;
-    seg->base = 0x00000000;
+    seg->base = seg->selector << 4;
     seg->attrib.raw = 0xf3;
     seg->limit = ~0u;
   }
   
-  guest_state->gdtr.limit = 0x0000ffff;
-  guest_state->gdtr.base = 0x0000000000000000LL;
-  guest_state->idtr.limit = 0x0000ffff;
-  guest_state->idtr.base = 0x0000000000000000LL;
-
-  guest_state->ldtr.selector = 0x0000;
-  guest_state->ldtr.limit = 0x0000ffff;
-  guest_state->ldtr.base = 0x0000000000000000LL;
-  guest_state->tr.selector = 0x0000;
-  guest_state->tr.limit = 0x0000ffff;
-  guest_state->tr.base = 0x0000000000000000LL;
-
-
-  guest_state->dr6 = 0x00000000ffff0ff0LL;
-  guest_state->dr7 = 0x0000000000000400LL;
-
   if (vm_info.io_map.num_ports > 0) {
     vmm_io_hook_t * iter;
     addr_t io_port_bitmap;
@@ -378,7 +488,7 @@ void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info vm_info) {
       uchar_t * bitmap = (uchar_t *)io_port_bitmap;
 
       bitmap += (port / 8);
-      PrintDebug("Setting Bit for port 0x%x\n", port);
+      PrintDebug("Setting Bit in block %x\n", bitmap);
       *bitmap |= 1 << (port % 8);
     }
 
@@ -388,21 +498,16 @@ void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info vm_info) {
     ctrl_area->instrs.IOIO_PROT = 1;
   }
 
-
-
-  PrintDebug("Exiting on interrupts\n");
-  ctrl_area->guest_ctrl.V_INTR_MASKING = 1;
   ctrl_area->instrs.INTR = 1;
 
 
+
   if (vm_info.page_mode == SHADOW_PAGING) {
     PrintDebug("Creating initial shadow page table\n");
-    vm_info.shdw_pg_state.shadow_cr3.e_reg.low |= ((addr_t)create_passthrough_pde32_pts(&vm_info) & ~0xfff);
+    vm_info.shdw_pg_state.shadow_cr3 |= ((addr_t)create_passthrough_pde32_pts(&vm_info) & ~0xfff);
     PrintDebug("Created\n");
 
-    guest_state->cr3 = vm_info.shdw_pg_state.shadow_cr3.r_reg;
-
-    //PrintDebugPageTables((pde32_t*)(vm_info.shdw_pg_state.shadow_cr3.e_reg.low));
+    guest_state->cr3 = vm_info.shdw_pg_state.shadow_cr3;
 
     ctrl_area->cr_reads.cr3 = 1;
     ctrl_area->cr_writes.cr3 = 1;
@@ -436,6 +541,12 @@ void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info vm_info) {
 
 
 }
+*/
+
+
+
+
+
 
 
 #if 0
@@ -605,157 +716,3 @@ void Init_VMCB_pe(vmcb_t *vmcb, struct guest_info vm_info) {
 #endif
 
 
-
-
-
-
-
-
-
-
-
-
-
-
-/*
-
-
-void Init_VMCB_Real(vmcb_t * vmcb, struct guest_info vm_info) {
-  vmcb_ctrl_t * ctrl_area = GET_VMCB_CTRL_AREA(vmcb);
-  vmcb_saved_state_t * guest_state = GET_VMCB_SAVE_STATE_AREA(vmcb);
-  uint_t i;
-
-
-  guest_state->rsp = vm_info.vm_regs.rsp;
-  guest_state->rip = vm_info.rip;
-
-
-  guest_state->efer |= EFER_MSR_svm_enable;
-  guest_state->rflags = 0x00000002; // The reserved bit is always 1
-  ctrl_area->svm_instrs.instrs.VMRUN = 1;
-  ctrl_area->guest_ASID = 1;
-  guest_state->cr0 = 0x60000010;
-
-
-  ctrl_area->exceptions.de = 1;
-  ctrl_area->exceptions.df = 1;
-  ctrl_area->exceptions.pf = 1;
-  ctrl_area->exceptions.ts = 1;
-  ctrl_area->exceptions.ss = 1;
-  ctrl_area->exceptions.ac = 1;
-  ctrl_area->exceptions.mc = 1;
-  ctrl_area->exceptions.gp = 1;
-  ctrl_area->exceptions.ud = 1;
-  ctrl_area->exceptions.np = 1;
-  ctrl_area->exceptions.of = 1;
-  ctrl_area->exceptions.nmi = 1;
-
-  guest_state->cs.selector = 0xf000;
-  guest_state->cs.limit=0xffff;
-  guest_state->cs.base =  0xffff0000;
-  guest_state->cs.attrib.raw = 0x9a;
-
-  
-  struct vmcb_selector *segregs [] = {&(guest_state->ss), &(guest_state->ds), &(guest_state->es), &(guest_state->fs), &(guest_state->gs), NULL};
-  for ( i = 0; segregs[i] != NULL; i++) {
-    struct vmcb_selector * seg = segregs[i];
-    
-    seg->selector = 0x0000;
-    seg->base = 0xffff0000;
-    seg->attrib.raw = 0x9b;
-    seg->limit = 0xffff;
-  }
-  
-  // Set GPRs 
-  //
-  //  EDX == 0xfxx
-  //  EAX, EBX, ECX, ESI, EDI, EBP, ESP == 0x0
-  //
-
-  guest_state->gdtr.base = 0;
-  guest_state->gdtr.limit = 0xffff;
-  guest_state->gdtr.attrib.raw = 0x0;
-
-  guest_state->idtr.base = 0;
-  guest_state->idtr.limit = 0xffff;
-  guest_state->idtr.attrib.raw = 0x0;
-
-  guest_state->ldtr.base = 0;
-  guest_state->ldtr.limit = 0xffff;
-  guest_state->ldtr.attrib.raw = 0x82;
-
-  guest_state->tr.base = 0;
-  guest_state->tr.limit = 0xffff;
-  guest_state->tr.attrib.raw = 0x83;
-
-
-
-
-  if (vm_info.io_map.num_ports > 0) {
-    vmm_io_hook_t * iter;
-    addr_t io_port_bitmap;
-    
-    io_port_bitmap = (addr_t)os_hooks->allocate_pages(3);
-    memset((uchar_t*)io_port_bitmap, 0, PAGE_SIZE * 3);
-    
-    ctrl_area->IOPM_BASE_PA = io_port_bitmap;
-
-    //PrintDebug("Setting up IO Map at 0x%x\n", io_port_bitmap);
-
-    FOREACH_IO_HOOK(vm_info.io_map, iter) {
-      ushort_t port = iter->port;
-      uchar_t * bitmap = (uchar_t *)io_port_bitmap;
-
-      bitmap += (port / 8);
-      PrintDebug("Setting Bit in block %x\n", bitmap);
-      *bitmap |= 1 << (port % 8);
-    }
-
-    ctrl_area->instrs.instrs.IOIO_PROT = 1;
-  }
-
-  ctrl_area->instrs.instrs.INTR = 1;
-
-  // also determine if CPU supports nested paging
-
-  if (vm_info.page_mode == SHADOW_PAGING) {
-    PrintDebug("Creating initial shadow page table\n");
-    vm_info.shdw_pg_state.shadow_cr3.e_reg.low |= ((addr_t)create_passthrough_pde32_pts(&vm_info) & ~0xfff);
-    PrintDebug("Created\n");
-
-    guest_state->cr3 = vm_info.shdw_pg_state.shadow_cr3.r_reg;
-
-    ctrl_area->cr_reads.crs.cr3 = 1;
-    ctrl_area->cr_writes.crs.cr3 = 1;
-    ctrl_area->cr_reads.crs.cr0 = 1;
-    ctrl_area->cr_writes.crs.cr0 = 1;
-
-    ctrl_area->instrs.instrs.INVLPG = 1;
-    ctrl_area->instrs.instrs.INVLPGA = 1;
-
-       
-    guest_state->g_pat = 0x7040600070406ULL;
-
-    vm_info.shdw_pg_state.guest_cr0.e_reg.low = guest_state->cr0;
-    guest_state->cr0 |= 0x80000000;
-  } else if (vm_info.page_mode == NESTED_PAGING) {
-    // Flush the TLB on entries/exits
-    //ctrl_area->TLB_CONTROL = 1;
-
-    // Enable Nested Paging
-    //ctrl_area->NP_ENABLE = 1;
-
-    //PrintDebug("NP_Enable at 0x%x\n", &(ctrl_area->NP_ENABLE));
-
-        // Set the Nested Page Table pointer
-    //    ctrl_area->N_CR3 = ((addr_t)vm_info.page_tables);
-    // ctrl_area->N_CR3 = (addr_t)(vm_info.page_tables);
-
-    //   ctrl_area->N_CR3 = Get_CR3();
-    // guest_state->cr3 |= (Get_CR3() & 0xfffff000);
-
-    //    guest_state->g_pat = 0x7040600070406ULL;
-  }
-
-}
-*/