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.

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save/restore MSRs before VM entry/exit
[palacios.git] / palacios / src / palacios / svm.c
diff --git a/palacios/src/palacios/svm.c b/palacios/src/palacios/svm.c
index ee2c4fd..36d3d46 100644 (file)
--- a/palacios/src/palacios/svm.c
+++ b/palacios/src/palacios/svm.c
@@ -37,6 +37,9 @@
 #include <palacios/vmm_lowlevel.h>
 #include <palacios/svm_msr.h>
 
+#include <palacios/vmm_rbtree.h>
+
+#include <palacios/vmm_profiler.h>
 
 
 extern void v3_stgi();
@@ -73,7 +76,7 @@ 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_reads.cr4 = 1;
   ctrl_area->cr_writes.cr4 = 1;
 
 
@@ -90,9 +93,10 @@ static void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info *vm_info) {
   */
 
   guest_state->efer |= EFER_MSR_svm_enable;
+  vm_info->guest_efer.value = 0x0LL;
 
   v3_hook_msr(vm_info, EFER_MSR, 
-             NULL, /*&v3_handle_efer_read,*/ 
+             &v3_handle_efer_read,
              &v3_handle_efer_write, 
              vm_info);
 
@@ -147,6 +151,7 @@ static void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info *vm_info) {
 
   guest_state->cr0 = 0x60000010;
 
+
   guest_state->cs.selector = 0xf000;
   guest_state->cs.limit=0xffff;
   guest_state->cs.base = 0x0000000f0000LL;
@@ -189,10 +194,12 @@ static void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info *vm_info) {
 
 
 
-  if (vm_info->io_map.num_ports > 0) {
-    struct vmm_io_hook * iter;
+  if ( !RB_EMPTY_ROOT(&(vm_info->io_map)) ) {
+    struct v3_io_hook * iter;
+    struct rb_node * io_node = v3_rb_first(&(vm_info->io_map));
     addr_t io_port_bitmap;
-    
+    int i = 0;
+
     io_port_bitmap = (addr_t)V3_VAddr(V3_AllocPages(3));
     memset((uchar_t*)io_port_bitmap, 0, PAGE_SIZE * 3);
     
@@ -200,14 +207,19 @@ static void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info *vm_info) {
 
     //PrintDebug("Setting up IO Map at 0x%x\n", io_port_bitmap);
 
-    FOREACH_IO_HOOK(vm_info->io_map, iter) {
+    do {
+      iter = rb_entry(io_node, struct v3_io_hook, tree_node);
+
       ushort_t port = iter->port;
       uchar_t * bitmap = (uchar_t *)io_port_bitmap;
+      PrintDebug("%d: Hooking Port %d\n", i, port);
 
       bitmap += (port / 8);
       //      PrintDebug("Setting Bit for port 0x%x\n", port);
       *bitmap |= 1 << (port % 8);
-    }
+
+      i++;
+    } while ((io_node = v3_rb_next(io_node)));
 
 
     //PrintDebugMemDump((uchar_t*)io_port_bitmap, PAGE_SIZE *2);
@@ -231,12 +243,9 @@ static void Init_VMCB_BIOS(vmcb_t * vmcb, struct guest_info *vm_info) {
     vm_info->direct_map_pt = (addr_t)V3_PAddr(create_passthrough_pts_32(vm_info));
     /* End Test */
 
-    //vm_info->shdw_pg_state.shadow_cr3 |= (vm_info->direct_map_pt & ~0xfff);
-    vm_info->shdw_pg_state.shadow_cr3 = 0;
     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;
 
@@ -343,16 +352,37 @@ static int start_svm_guest(struct guest_info *info) {
 
   while (1) {
     ullong_t tmp_tsc;
-    uint_t vm_cr_low = 0, vm_cr_high = 0;
 
 
+
+#define MSR_STAR      0xc0000081
+#define MSR_LSTAR     0xc0000082
+#define MSR_CSTAR     0xc0000083
+#define MSR_SF_MASK   0xc0000084
+#define MSR_GS_BASE   0xc0000101
+
+    struct v3_msr host_cstar;
+    struct v3_msr host_star;
+    struct v3_msr host_lstar;
+    struct v3_msr host_syscall_mask;
+    struct v3_msr host_gs_base;
+
     v3_enable_ints();
     v3_clgi();
 
 
-    //PrintDebug("SVM Entry to rip=%p...\n", (void *)info->rip);
+    /*
+    PrintDebug("SVM Entry to CS=%p  rip=%p...\n", 
+              (void *)(addr_t)info->segments.cs.base, 
+              (void *)(addr_t)info->rip);
+    */
+
 
-    v3_get_msr(0xc0000101, &vm_cr_high, &vm_cr_low);
+    v3_get_msr(MSR_STAR, &(host_star.hi), &(host_star.lo));
+    v3_get_msr(MSR_LSTAR, &(host_lstar.hi), &(host_lstar.lo));
+    v3_get_msr(MSR_CSTAR, &(host_cstar.hi), &(host_cstar.lo));
+    v3_get_msr(MSR_SF_MASK, &(host_syscall_mask.hi), &(host_syscall_mask.lo));
+    v3_get_msr(MSR_GS_BASE, &(host_gs_base.hi), &(host_gs_base.lo));
 
     rdtscll(info->time_state.cached_host_tsc);
 
@@ -361,7 +391,12 @@ static int start_svm_guest(struct guest_info *info) {
     v3_svm_launch((vmcb_t*)V3_PAddr(info->vmm_data), &(info->vm_regs));
     rdtscll(tmp_tsc);
 
-    v3_set_msr(0xc0000101, vm_cr_high, vm_cr_low);
+    v3_set_msr(MSR_STAR, host_star.hi, host_star.lo);
+    v3_set_msr(MSR_LSTAR, host_lstar.hi, host_lstar.lo);
+    v3_set_msr(MSR_CSTAR, host_cstar.hi, host_cstar.lo);
+    v3_set_msr(MSR_SF_MASK, host_syscall_mask.hi, host_syscall_mask.lo);
+    v3_set_msr(MSR_GS_BASE, host_gs_base.hi, host_gs_base.lo);
+
     //PrintDebug("SVM Returned\n");
 
 
@@ -373,10 +408,13 @@ static int start_svm_guest(struct guest_info *info) {
     v3_stgi();
 
 
-    if (num_exits % 25 == 0) {
+    if ((num_exits % 5000) == 0) {
       PrintDebug("SVM Exit number %d\n", num_exits);
+      if (info->enable_profiler) 
+       v3_print_profile(info);
     }
 
+
      
     if (v3_handle_svm_exit(info) != 0) {
       vmcb_ctrl_t * guest_ctrl = GET_VMCB_CTRL_AREA((vmcb_t*)(info->vmm_data));
@@ -396,10 +434,15 @@ static int start_svm_guest(struct guest_info *info) {
       PrintDebug("RIP Linear: %p\n", (void *)linear_addr);
       v3_print_segments(info);
       v3_print_ctrl_regs(info);
+      if (info->shdw_pg_mode == SHADOW_PAGING) {
+       PrintDebug("Shadow Paging Guest Registers:\n");
+       PrintDebug("\tGuest CR0=%p\n", (void *)(addr_t)(info->shdw_pg_state.guest_cr0));
+       PrintDebug("\tGuest CR3=%p\n", (void *)(addr_t)(info->shdw_pg_state.guest_cr3));
+       // efer
+       // CR4
+      }
       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));
@@ -422,6 +465,7 @@ static int start_svm_guest(struct guest_info *info) {
 
       break;
     }
+
   }
   return 0;
 }
@@ -441,7 +485,7 @@ int v3_is_svm_capable() {
 
   v3_cpuid(CPUID_FEATURE_IDS, &eax, &ebx, &ecx, &edx);
   
-  PrintDebug("CPUID_FEATURE_IDS_ecx=0x%p\n", (void *)ecx);
+  PrintDebug("CPUID_FEATURE_IDS_ecx=%p\n", (void *)ecx);
 
   if ((ecx & CPUID_FEATURE_IDS_ecx_svm_avail) == 0) {
     PrintDebug("SVM Not Available\n");
@@ -456,7 +500,7 @@ int v3_is_svm_capable() {
 
       v3_cpuid(CPUID_SVM_REV_AND_FEATURE_IDS, &eax, &ebx, &ecx, &edx);
       
-      PrintDebug("CPUID_FEATURE_IDS_edx=0x%p\n", (void *)edx);
+      PrintDebug("CPUID_FEATURE_IDS_edx=%p\n", (void *)edx);
       
       if ((edx & CPUID_SVM_REV_AND_FEATURE_IDS_edx_svml) == 0) {
        PrintDebug("SVM BIOS Disabled, not unlockable\n");
@@ -469,8 +513,11 @@ int v3_is_svm_capable() {
       PrintDebug("SVM is available and  enabled.\n");
 
       v3_cpuid(CPUID_SVM_REV_AND_FEATURE_IDS, &eax, &ebx, &ecx, &edx);
-      
-      PrintDebug("CPUID_FEATURE_IDS_edx=0x%p\n", (void *)edx);
+      PrintDebug("CPUID_FEATURE_IDS_eax=%p\n", (void *)eax);
+      PrintDebug("CPUID_FEATURE_IDS_ebx=%p\n", (void *)ebx);
+      PrintDebug("CPUID_FEATURE_IDS_ecx=%p\n", (void *)ecx);      
+      PrintDebug("CPUID_FEATURE_IDS_edx=%p\n", (void *)edx);
+
 
       if ((edx & CPUID_SVM_REV_AND_FEATURE_IDS_edx_np) == 0) {
        PrintDebug("SVM Nested Paging not supported\n");
Public Palacios Development Repository for the V3VEE Project