Changeset 8110 in vbox

Timestamp:

Apr 17, 2008 3:50:17 PM (17 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

29812

Message:

Allow clearing of CPUMCPUIDFEATURE_PAE

File:

• trunk/src/VBox/VMM/VMMAll/CPUMAllRegs.cpp (modified) (1 diff)

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

@@ -1098 +1098 @@
             break;
 
+        case CPUMCPUIDFEATURE_PAE:
+        {
+            if (pVM->cpum.s.aGuestCpuIdStd[0].eax >= 1)
+                pVM->cpum.s.aGuestCpuIdStd[1].edx &= ~X86_CPUID_FEATURE_EDX_PAE;
+            if (    pVM->cpum.s.aGuestCpuIdExt[0].eax >= 0x80000001
+                &&  pVM->cpum.s.aGuestCpuIdExt[1].edx)
+                pVM->cpum.s.aGuestCpuIdExt[1].edx &= ~X86_CPUID_AMD_FEATURE_EDX_PAE;
+            LogRel(("CPUMClearGuestCpuIdFeature: Disabled PAE!\n"));
+            break;
+        }
+
         default:
             AssertMsgFailed(("enmFeature=%d\n", enmFeature));