Changeset 11692 in vbox

Timestamp:

Aug 27, 2008 9:09:09 AM (16 years ago)

Author:

vboxsync

Message:

Disabled microcode version passthru. Code is sufficient to make sure Windows XP doesn't attempt to update the microcode (which we don't allow).

File:

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

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

@@ -2556 +2556 @@
         break;
 
-#ifdef IN_RING0
+#if 0 /*def IN_RING0 */
+    case MSR_IA32_PLATFORM_ID:
     case MSR_IA32_BIOS_SIGN_ID:
         if (CPUMGetCPUVendor(pVM) == CPUMCPUVENDOR_INTEL)
         {
             /* Available since the P6 family. VT-x implies that this feature is present. */
-            val = ASMRdMsr(MSR_IA32_BIOS_SIGN_ID);
+            if (pRegFrame->ecx == MSR_IA32_PLATFORM_ID)
+                val = ASMRdMsr(MSR_IA32_PLATFORM_ID);
+            else
+            if (pRegFrame->ecx == MSR_IA32_BIOS_SIGN_ID)
+                val = ASMRdMsr(MSR_IA32_BIOS_SIGN_ID);
             break;
         }