Changeset 24254 in vbox

Timestamp:

Nov 2, 2009 2:01:29 PM (15 years ago)

Author:

vboxsync

Message:

Long mode check update

File:

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

trunk/src/VBox/VMM/HWACCM.cpp

@@ -1117 +1117 @@
                     else
                     {
+                        uint32_t u32Eax, u32Dummy;
+
                         /* TPR patching needs access to the MSR_K8_LSTAR msr. */
-                        if (!CPUMGetGuestCpuIdFeature(pVM, CPUMCPUIDFEATURE_LONG_MODE))
+                        ASMCpuId(0x80000000, &u32Eax, &u32Dummy, &u32Dummy, &u32Dummy);
+                        if (    u32Eax < 0x80000001
+                            ||  !(ASMCpuId_EDX(0x80000001) & X86_CPUID_AMD_FEATURE_EDX_LONG_MODE))
                         {
                             pVM->hwaccm.s.fTRPPatchingAllowed = false;