Changeset 11704

Timestamp:

08/27/08 16:52:09 (3 months ago)

Author:

vboxsync

Message:

Allow enabling and disabling of the PAT cpuid feature.

Files:

• trunk/include/VBox/cpum.h (modified) (1 diff)
• trunk/src/VBox/VMM/VMMAll/CPUMAllRegs.cpp (modified) (2 diffs)

trunk/include/VBox/cpum.h

@@ -398 +398 @@
-    CPUMCPUIDFEATURE_LAHF,
-    /** The LONG MODE feature bit. (Ext) */
-
+
+
+
+
+
-} CPUMCPUIDFEATURE;
-

trunk/src/VBox/VMM/VMMAll/CPUMAllRegs.cpp

@@ -1203 +1203 @@
-        }
-
+        case CPUMCPUIDFEATURE_PAT:
+        {
+            if (pVM->cpum.s.aGuestCpuIdStd[0].eax >= 1)
+                pVM->cpum.s.aGuestCpuIdStd[1].edx |= X86_CPUID_FEATURE_EDX_PAT;
+            if (    pVM->cpum.s.aGuestCpuIdExt[0].eax >= 0x80000001
+                &&  pVM->cpum.s.enmCPUVendor == CPUMCPUVENDOR_AMD)
+                pVM->cpum.s.aGuestCpuIdExt[1].edx |= X86_CPUID_AMD_FEATURE_EDX_PAT;
+            LogRel(("CPUMClearGuestCpuIdFeature: Enabled PAT\n"));
+            break;
+        }
+
-        default:
-            AssertMsgFailed(("enmFeature=%d\n", enmFeature));
@@ -1265 +1276 @@
-                pVM->cpum.s.aGuestCpuIdExt[1].edx &= ~X86_CPUID_AMD_FEATURE_EDX_PAE;
-            LogRel(("CPUMClearGuestCpuIdFeature: Disabled PAE!\n"));
+            break;
+        }
+
+        case CPUMCPUIDFEATURE_PAT:
+        {
+            if (pVM->cpum.s.aGuestCpuIdStd[0].eax >= 1)
+                pVM->cpum.s.aGuestCpuIdStd[1].edx &= ~X86_CPUID_FEATURE_EDX_PAT;
+            if (    pVM->cpum.s.aGuestCpuIdExt[0].eax >= 0x80000001
+                &&  pVM->cpum.s.enmCPUVendor == CPUMCPUVENDOR_AMD)
+                pVM->cpum.s.aGuestCpuIdExt[1].edx &= ~X86_CPUID_AMD_FEATURE_EDX_PAT;
+            LogRel(("CPUMClearGuestCpuIdFeature: Disabled PAT!\n"));
-            break;
-        }