Changeset 57513 in vbox

Timestamp:

Aug 24, 2015 3:38:11 PM (9 years ago)

Author:

vboxsync

Message:

GIM/HyperV: Update 0x40000002 cpuid as per the Hyper-V spec. when guest writes to it.

File:

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

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

@@ -259 +259 @@
                         MSR_GIM_HV_GUEST_OS_ID_MAJOR_VERSION(uRawValue),   MSR_GIM_HV_GUEST_OS_ID_MINOR_VERSION(uRawValue),
                         MSR_GIM_HV_GUEST_OS_ID_SERVICE_VERSION(uRawValue), MSR_GIM_HV_GUEST_OS_ID_BUILD(uRawValue)));
+
+                /* Update the CPUID leaf, see Hyper-V spec. "Microsoft Hypervisor CPUID Leaves". */
+                CPUMCPUIDLEAF HyperLeaf;
+                RT_ZERO(HyperLeaf);
+                HyperLeaf.uLeaf = UINT32_C(0x40000002);
+                HyperLeaf.uEax  = MSR_GIM_HV_GUEST_OS_ID_BUILD(uRawValue);
+                HyperLeaf.uEbx  =  MSR_GIM_HV_GUEST_OS_ID_MINOR_VERSION(uRawValue)
+                                | (MSR_GIM_HV_GUEST_OS_ID_MAJOR_VERSION(uRawValue) << 16);
+                HyperLeaf.uEcx  = MSR_GIM_HV_GUEST_OS_ID_SERVICE_VERSION(uRawValue);
+                HyperLeaf.uEdx  =  MSR_GIM_HV_GUEST_OS_ID_SERVICE_VERSION(uRawValue)
+                                | (MSR_GIM_HV_GUEST_OS_ID_BUILD(uRawValue) << 24);
+                int rc2 = CPUMR3CpuIdInsert(pVM, &HyperLeaf);
+                AssertRC(rc2);
             }
             pHv->u64GuestOsIdMsr = uRawValue;