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.


setting up framework for 64 bit shadow paging
[palacios.git] / palacios / src / palacios / svm.c
index 4913513..8efa804 100644 (file)
 #include <palacios/vmm_decoder.h>
 #include <palacios/vmm_string.h>
 #include <palacios/vmm_lowlevel.h>
-
-
-
-extern uint_t Get_CR3();
+#include <palacios/svm_msr.h>
 
 
 
@@ -59,7 +56,7 @@ static vmcb_t * Allocate_VMCB() {
 
 
 
-
+#include <palacios/vmm_ctrl_regs.h>
 
 static void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info *vm_info) {
   vmcb_ctrl_t * ctrl_area = GET_VMCB_CTRL_AREA(vmcb);
@@ -76,8 +73,32 @@ static void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info *vm_info) {
   //ctrl_area->instrs.instrs.CR0 = 1;
   ctrl_area->cr_reads.cr0 = 1;
   ctrl_area->cr_writes.cr0 = 1;
+  //ctrl_area->cr_reads.cr4 = 1;
+  ctrl_area->cr_writes.cr4 = 1;
+
+
+  /* Set up the efer to enable 64 bit page tables */
+  /*
+  {
+    struct efer_64 * efer = (struct efer_64 *)&(guest_state->efer);
+    struct cr4_32 * cr4 = (struct cr4_32 *)&(guest_state->cr4);
+    efer->lma = 1;
+    efer->lme = 1;
+
+    cr4->pae = 1;
+  }
+  */
 
   guest_state->efer |= EFER_MSR_svm_enable;
+  vm_info->guest_efer.value = 0x0LL;
+
+  v3_hook_msr(vm_info, EFER_MSR, 
+             &v3_handle_efer_read,
+             &v3_handle_efer_write, 
+             vm_info);
+
+
+
   guest_state->rflags = 0x00000002; // The reserved bit is always 1
   ctrl_area->svm_instrs.VMRUN = 1;
   ctrl_area->svm_instrs.VMMCALL = 1;
@@ -114,6 +135,8 @@ static void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info *vm_info) {
   
     ctrl_area->exceptions.nmi = 1;
   */
+
+
   // Debug of boot on physical machines - 7/14/08
   ctrl_area->instrs.NMI=1;
   ctrl_area->instrs.SMI=1;
@@ -121,12 +144,11 @@ static void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info *vm_info) {
   ctrl_area->instrs.PAUSE=1;
   ctrl_area->instrs.shutdown_evts=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;
@@ -164,6 +186,11 @@ static void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info *vm_info) {
   guest_state->dr6 = 0x00000000ffff0ff0LL;
   guest_state->dr7 = 0x0000000000000400LL;
 
+  
+  
+
+
+
   if (vm_info->io_map.num_ports > 0) {
     struct vmm_io_hook * iter;
     addr_t io_port_bitmap;
@@ -189,8 +216,7 @@ static 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;
@@ -199,12 +225,20 @@ static void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info *vm_info) {
 
   if (vm_info->shdw_pg_mode == SHADOW_PAGING) {
     PrintDebug("Creating initial shadow page table\n");
-    vm_info->direct_map_pt = (addr_t)create_passthrough_pde32_pts(vm_info);
-    vm_info->shdw_pg_state.shadow_cr3 |= (vm_info->direct_map_pt & ~0xfff);
+
+
+
+    /* Testing 64 bit page tables for long paged real mode guests */
+    //    vm_info->direct_map_pt = (addr_t)V3_PAddr(create_passthrough_pts_64(vm_info));
+    vm_info->direct_map_pt = (addr_t)V3_PAddr(create_passthrough_pts_32(vm_info));
+    /* End Test */
+
     vm_info->shdw_pg_state.guest_cr0 = 0x0000000000000010LL;
     PrintDebug("Created\n");
 
-    guest_state->cr3 = vm_info->shdw_pg_state.shadow_cr3;
+
+    guest_state->cr3 = vm_info->direct_map_pt;
+
 
     //PrintDebugPageTables((pde32_t*)(vm_info->shdw_pg_state.shadow_cr3.e_reg.low));
 
@@ -222,7 +256,6 @@ static void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info *vm_info) {
     ctrl_area->TLB_CONTROL = 1;
     
 
-
     guest_state->g_pat = 0x7040600070406ULL;
 
     guest_state->cr0 |= 0x80000000;
@@ -234,10 +267,10 @@ static void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info *vm_info) {
     // Enable Nested Paging
     ctrl_area->NP_ENABLE = 1;
 
-    PrintDebug("NP_Enable at 0x%x\n", &(ctrl_area->NP_ENABLE));
+    PrintDebug("NP_Enable at 0x%p\n", (void *)&(ctrl_area->NP_ENABLE));
 
     // Set the Nested Page Table pointer
-    vm_info->direct_map_pt = ((addr_t)create_passthrough_pde32_pts(vm_info) & ~0xfff);
+    vm_info->direct_map_pt = ((addr_t)create_passthrough_pts_32(vm_info) & ~0xfff);
     ctrl_area->N_CR3 = vm_info->direct_map_pt;
 
     //   ctrl_area->N_CR3 = Get_CR3();
@@ -247,6 +280,14 @@ static void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info *vm_info) {
   }
 
 
+  if (vm_info->msr_map.num_hooks > 0) {
+    PrintDebug("Hooking %d msrs\n", vm_info->msr_map.num_hooks);
+    ctrl_area->MSRPM_BASE_PA = v3_init_svm_msr_map(vm_info);
+    ctrl_area->instrs.MSR_PROT = 1;
+
+  }
+
+
 
 }
 
@@ -264,7 +305,7 @@ static int init_svm_guest(struct guest_info *info) {
   //  PrintDebugPageTables(info->page_tables);
 
 
-  PrintDebug("Initializing VMCB (addr=%x)\n", info->vmm_data);
+  PrintDebug("Initializing VMCB (addr=%p)\n", (void *)info->vmm_data);
   Init_VMCB_BIOS((vmcb_t*)(info->vmm_data), info);
   
 
@@ -294,7 +335,7 @@ static int start_svm_guest(struct guest_info *info) {
 
 
 
-  PrintDebug("Launching SVM VM (vmcb=%x)\n", info->vmm_data);
+  PrintDebug("Launching SVM VM (vmcb=%p)\n", (void *)info->vmm_data);
   //PrintDebugVMCB((vmcb_t*)(info->vmm_data));
 
   info->run_state = VM_RUNNING;
@@ -307,63 +348,37 @@ static int start_svm_guest(struct guest_info *info) {
     v3_enable_ints();
     v3_clgi();
 
-    {
-
-      v3_get_msr(0xc0000101, &vm_cr_high, &vm_cr_low);
-
-      PrintDebug("GS.Base: %x:%x\n", vm_cr_high, vm_cr_low); 
-      /*
-      v3_get_msr(0xc0000102, &vm_cr_high, &vm_cr_low);
-
-      PrintDebug("KernelGSBase: %x:%x\n", vm_cr_high, vm_cr_low); 
-      */
 
-    }
+    //PrintDebug("SVM Entry to rip=%p...\n", (void *)info->rip);
 
-    PrintDebug("SVM Entry to rip=%x...\n", info->rip);
+    v3_get_msr(0xc0000101, &vm_cr_high, &vm_cr_low);
 
     rdtscll(info->time_state.cached_host_tsc);
+
     guest_ctrl->TSC_OFFSET = info->time_state.guest_tsc - info->time_state.cached_host_tsc;
 
     v3_svm_launch((vmcb_t*)V3_PAddr(info->vmm_data), &(info->vm_regs));
-
     rdtscll(tmp_tsc);
-    PrintDebug("SVM Returned\n");
-
 
-    {
+    v3_set_msr(0xc0000101, vm_cr_high, vm_cr_low);
+    //PrintDebug("SVM Returned\n");
 
-      v3_set_msr(0xc0000101, vm_cr_high, vm_cr_low);
-
-      PrintDebug("GS.Base: %x:%x\n", vm_cr_high, vm_cr_low); 
-
-      /*
-      v3_get_msr(0xc0000102, &vm_cr_high, &vm_cr_low);
-
-      PrintDebug("KernelGSBase: %x:%x\n", vm_cr_high, vm_cr_low); 
-      */
-
-    }
-    
-    {
-      uint_t x = 0;
-      PrintDebug("RSP=%p\n", &x);
-    }
 
 
     v3_update_time(info, tmp_tsc - info->time_state.cached_host_tsc);
     num_exits++;
 
-    PrintDebug("Turning on global interrupts\n");
+    //PrintDebug("Turning on global interrupts\n");
     v3_stgi();
 
 
-    PrintDebug("SVM Exit number %d\n", num_exits);
-
+    if (num_exits % 25 == 0) {
+      PrintDebug("SVM Exit number %d\n", num_exits);
+    }
 
      
     if (v3_handle_svm_exit(info) != 0) {
-
+      vmcb_ctrl_t * guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
       addr_t host_addr;
       addr_t linear_addr = 0;
 
@@ -371,16 +386,26 @@ static int start_svm_guest(struct guest_info *info) {
 
       PrintDebug("SVM ERROR!!\n"); 
       
-      PrintDebug("RIP: %x\n", guest_state->rip);
+      PrintDebug("RIP: %p\n", (void *)(addr_t)(guest_state->rip));
 
 
       linear_addr = get_addr_linear(info, guest_state->rip, &(info->segments.cs));
 
 
-      PrintDebug("RIP Linear: %\n", linear_addr);
+      PrintDebug("RIP Linear: %p\n", (void *)linear_addr);
       v3_print_segments(info);
       v3_print_ctrl_regs(info);
       v3_print_GPRs(info);
+
+
+
+      PrintDebug("SVM Exit Code: %p\n", (void *)(addr_t)guest_ctrl->exit_code); 
+      
+      PrintDebug("exit_info1 low = 0x%.8x\n", *(uint_t*)&(guest_ctrl->exit_info1));
+      PrintDebug("exit_info1 high = 0x%.8x\n", *(uint_t *)(((uchar_t *)&(guest_ctrl->exit_info1)) + 4));
+      
+      PrintDebug("exit_info2 low = 0x%.8x\n", *(uint_t*)&(guest_ctrl->exit_info2));
+      PrintDebug("exit_info2 high = 0x%.8x\n", *(uint_t *)(((uchar_t *)&(guest_ctrl->exit_info2)) + 4));
       
       if (info->mem_mode == PHYSICAL_MEM) {
        guest_pa_to_host_va(info, linear_addr, &host_addr);
@@ -389,9 +414,9 @@ static int start_svm_guest(struct guest_info *info) {
       }
 
 
-      PrintDebug("Host Address of rip = 0x%x\n", host_addr);
+      PrintDebug("Host Address of rip = 0x%p\n", (void *)host_addr);
 
-      PrintDebug("Instr (15 bytes) at %x:\n", host_addr);
+      PrintDebug("Instr (15 bytes) at %p:\n", (void *)host_addr);
       PrintTraceMemDump((uchar_t *)host_addr, 15);
 
       break;
@@ -415,7 +440,7 @@ int v3_is_svm_capable() {
 
   v3_cpuid(CPUID_FEATURE_IDS, &eax, &ebx, &ecx, &edx);
   
-  PrintDebug("CPUID_FEATURE_IDS_ecx=0x%x\n", ecx);
+  PrintDebug("CPUID_FEATURE_IDS_ecx=0x%p\n", (void *)ecx);
 
   if ((ecx & CPUID_FEATURE_IDS_ecx_svm_avail) == 0) {
     PrintDebug("SVM Not Available\n");
@@ -430,7 +455,7 @@ int v3_is_svm_capable() {
 
       v3_cpuid(CPUID_SVM_REV_AND_FEATURE_IDS, &eax, &ebx, &ecx, &edx);
       
-      PrintDebug("CPUID_FEATURE_IDS_edx=0x%x\n", edx);
+      PrintDebug("CPUID_FEATURE_IDS_edx=0x%p\n", (void *)edx);
       
       if ((edx & CPUID_SVM_REV_AND_FEATURE_IDS_edx_svml) == 0) {
        PrintDebug("SVM BIOS Disabled, not unlockable\n");
@@ -444,7 +469,7 @@ int v3_is_svm_capable() {
 
       v3_cpuid(CPUID_SVM_REV_AND_FEATURE_IDS, &eax, &ebx, &ecx, &edx);
       
-      PrintDebug("CPUID_FEATURE_IDS_edx=0x%x\n", edx);
+      PrintDebug("CPUID_FEATURE_IDS_edx=0x%p\n", (void *)edx);
 
       if ((edx & CPUID_SVM_REV_AND_FEATURE_IDS_edx_np) == 0) {
        PrintDebug("SVM Nested Paging not supported\n");
@@ -541,7 +566,7 @@ void v3_init_SVM(struct v3_ctrl_ops * vmm_ops) {
   //msr.e_reg.low = (uint_t)host_state;
   msr.r_reg = (addr_t)host_state;
 
-  PrintDebug("Host State being saved at %x\n", (addr_t)host_state);
+  PrintDebug("Host State being saved at %p\n", (void *)(addr_t)host_state);
   v3_set_msr(SVM_VM_HSAVE_PA_MSR, msr.e_reg.high, msr.e_reg.low);
 
 
@@ -687,7 +712,7 @@ void v3_init_SVM(struct v3_ctrl_ops * vmm_ops) {
 
   if (vm_info.page_mode == SHADOW_PAGING) {
     PrintDebug("Creating initial shadow page table\n");
-    vm_info.shdw_pg_state.shadow_cr3 |= ((addr_t)create_passthrough_pde32_pts(&vm_info) & ~0xfff);
+    vm_info.shdw_pg_state.shadow_cr3 |= ((addr_t)create_passthrough_pts_32(&vm_info) & ~0xfff);
     PrintDebug("Created\n");
 
     guest_state->cr3 = vm_info.shdw_pg_state.shadow_cr3;