X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?p=palacios.git;a=blobdiff_plain;f=palacios%2Fsrc%2Fpalacios%2Fsvm_msr.c;h=dabe82d206df4336b773a074baad9dcfc8d97a57;hp=bd16fb2024acee8ba2f47e344db46f925cc905e1;hb=123a1ba27ea09c8fa77a1b36ce625b43d7c48b14;hpb=5b6278751429f59297ce74e614d50632daea3748

diff --git a/palacios/src/palacios/svm_msr.c b/palacios/src/palacios/svm_msr.c
index bd16fb2..dabe82d 100644
--- a/palacios/src/palacios/svm_msr.c
+++ b/palacios/src/palacios/svm_msr.c
@@ -19,9 +19,9 @@
 
 #include <palacios/svm_msr.h>
 #include <palacios/vmm_msr.h>
-
+#include <palacios/vmm_sprintf.h>
 #include <palacios/vmm_list.h>
-
+#include <palacios/vm_guest.h>
 
 #define PENTIUM_MSRS_START            0x00000000
 #define PENTIUM_MSRS_END              0x00001fff
@@ -30,112 +30,63 @@
 #define AMD_7_8_GEN_MSRS_START        0xc0010000
 #define AMD_7_8_GEN_MSRS_END          0xc0011fff
 
-#define PENTIUM_MSRS_INDEX            (0x0 * 4)
-#define AMD_6_GEN_MSRS_INDEX          (0x800 * 4)
-#define AMD_7_8_GEN_MSRS_INDEX        (0x1000 * 4)
+#define PENTIUM_MSRS_INDEX            (0)
+#define AMD_6_GEN_MSRS_INDEX          (0x2000)
+#define AMD_7_8_GEN_MSRS_INDEX        (0x4000)
 
 
 
 static int get_bitmap_index(uint_t msr) {
-  if ((msr >= PENTIUM_MSRS_START) && 
-      (msr <= PENTIUM_MSRS_END)) {
-    return (PENTIUM_MSRS_INDEX + (msr - PENTIUM_MSRS_START));
-  } else if ((msr >= AMD_6_GEN_MSRS_START) && 
-	     (msr <= AMD_6_GEN_MSRS_END)) {
-    return (AMD_6_GEN_MSRS_INDEX + (msr - AMD_6_GEN_MSRS_START));
-  } else if ((msr >= AMD_7_8_GEN_MSRS_START) && 
-	     (msr <= AMD_7_8_GEN_MSRS_END)) {
-    return (AMD_7_8_GEN_MSRS_INDEX + (msr - AMD_7_8_GEN_MSRS_START));
-  } else {
-    PrintError("MSR out of range (MSR=0x%x)\n", msr);
-    return -1;
-  }
+    if ((msr >= PENTIUM_MSRS_START) && 
+	(msr <= PENTIUM_MSRS_END)) {
+	return (PENTIUM_MSRS_INDEX + (msr - PENTIUM_MSRS_START));
+    } else if ((msr >= AMD_6_GEN_MSRS_START) && 
+	       (msr <= AMD_6_GEN_MSRS_END)) {
+	return (AMD_6_GEN_MSRS_INDEX + (msr - AMD_6_GEN_MSRS_START));
+    } else if ((msr >= AMD_7_8_GEN_MSRS_START) && 
+	       (msr <= AMD_7_8_GEN_MSRS_END)) {
+	return (AMD_7_8_GEN_MSRS_INDEX + (msr - AMD_7_8_GEN_MSRS_START));
+    } else {
+	PrintError("MSR out of range (MSR=0x%x)\n", msr);
+	return -1;
+    }
 }
 
 
-
-addr_t v3_init_svm_msr_map(struct guest_info * info) {
-  uchar_t * msr_bitmap = (uchar_t*)V3_VAddr(V3_AllocPages(2));
-  struct v3_msr_map * msr_map = &(info->msr_map);
-  struct v3_msr_hook * hook = NULL;
-  
-  
-  memset(msr_bitmap, 0, PAGE_SIZE * 2);
-
-  list_for_each_entry(hook, &(msr_map->hook_list), link) {
-    int index = get_bitmap_index(hook->msr);
-    uint_t byte_offset = index / 4;
-    uint_t bit_offset = (index % 4) * 2;
+static int update_map(struct guest_info * info, uint_t msr, int hook_reads, int hook_writes) {
+    int index = get_bitmap_index(msr);
+    uint_t major = index / 4;
+    uint_t minor = (index % 4) * 2;
     uchar_t val = 0;
-    uchar_t mask = ~0x3;
+    uchar_t mask = 0x3;
+    uint8_t * bitmap = (uint8_t *)(info->msr_map.arch_data);
 
-    if (hook->read) {
-      val |= 0x1;
+    if (hook_reads) {
+	val |= 0x1;
     } 
-
-    if (hook->write) {
-      val |= 0x2;
+    
+    if (hook_writes) {
+	val |= 0x2;
     }
 
-    val = val << bit_offset;
-    mask = mask << bit_offset;
-
-    *(msr_bitmap + byte_offset) &= mask;
-    *(msr_bitmap + byte_offset) |= val;
-  }
+    *(bitmap + major) &= ~(mask << minor);
+    *(bitmap + major) |= (val << minor);
 
-  return (addr_t)V3_PAddr(msr_bitmap);
+    return 0;
 }
 
 
+int v3_init_svm_msr_map(struct guest_info * info) {
+    struct v3_msr_map * msr_map = &(info->msr_map);
+  
+    msr_map->update_map = update_map;
 
-int v3_handle_msr_write(struct guest_info * info) {
-  uint_t msr_num = info->vm_regs.rcx;
-  struct v3_msr msr_val;
-  struct v3_msr_hook * hook = NULL;
-
-  hook = v3_get_msr_hook(info, msr_num);
-
-  if (!hook) {
-    PrintError("Hook for MSR write %d not found\n", msr_num);
-    return -1;
-  }
-
-  msr_val.value = 0;
-  msr_val.lo = info->vm_regs.rax;
-  msr_val.hi = info->vm_regs.rdx;
+    msr_map->arch_data = V3_VAddr(V3_AllocPages(2));  
+    memset(msr_map->arch_data, 0, PAGE_SIZE_4KB * 2);
 
-  if (hook->write(msr_num, msr_val, hook->priv_data) == -1) {
-    PrintError("Error in MSR hook Write\n");
-    return -1;
-  }
+    v3_refresh_msr_map(info);
 
-  return 0;
+    return 0;
 }
 
 
-
-int v3_handle_msr_read(struct guest_info * info) {
-  uint_t msr_num = info->vm_regs.rcx;
-  struct v3_msr msr_val;
-  struct v3_msr_hook * hook = NULL;
-
-  hook = v3_get_msr_hook(info, msr_num);
-
-  if (!hook) {
-    PrintError("Hook for MSR read %d not found\n", msr_num);
-    return -1;
-  }
-
-  msr_val.value = 0;
-  
-  if (hook->read(msr_num, &msr_val, hook->priv_data) == -1) {
-    PrintError("Error in MSR hook Read\n");
-    return -1;
-  }
-
-  info->vm_regs.rax = msr_val.lo;
-  info->vm_regs.rdx = msr_val.hi;
-  
-  return 0;
-}