Changeset 11691 in vbox for trunk/src/VBox/VMM/VMMAll

Timestamp:

Aug 27, 2008 8:50:42 AM (17 years ago)

Author:

vboxsync

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

35415

Message:

Allow the MSR_IA32_BIOS_SIGN_ID query only for Intel CPUs.

File:

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

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

@@ -2558 +2558 @@
 #ifdef IN_RING0
     case MSR_IA32_BIOS_SIGN_ID:
-        val = ASMRdMsr(MSR_IA32_BIOS_SIGN_ID);
-        break;
+        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);
+            break;
+        }
+        /* no break */
 #endif
     default: