Changeset 60757 in vbox

Timestamp:

Apr 29, 2016 11:10:53 AM (8 years ago)

Author:

vboxsync

Message:

CPUMR3Db.cpp: Make sure we have a AMD64_TSC_AUX MSR if report via CPUID to the guest.

File:

• trunk/src/VBox/VMM/VMMR3/CPUMR3Db.cpp (modified) (2 diffs)

trunk/src/VBox/VMM/VMMR3/CPUMR3Db.cpp

@@ -594 +594 @@
  * for instance the cpu vendor differs.
  *
+ * Another example is older CPU profiles (e.g. Atom Bonnet) for newer CPUs (e.g.
+ * Atom Silvermont), where features reported thru CPUID aren't present in the
+ * MSRs (e.g. AMD64_TSC_AUX).
+ *
+ *
  * @returns VBox status code.
  * @param   pVM                 The cross context VM structure.
@@ -635 +640 @@
         };
         rc = cpumR3MsrApplyFudgeTable(pVM, &s_aP4FudgeMsrs[0], RT_ELEMENTS(s_aP4FudgeMsrs));
+        AssertLogRelRCReturn(rc, rc);
+    }
+
+    if (pVM->cpum.s.GuestFeatures.fRdTscP)
+    {
+        static CPUMMSRRANGE const s_aRdTscPFudgeMsrs[] =
+        {
+            MFX(0xc0000103, "AMD64_TSC_AUX", Amd64TscAux, Amd64TscAux, 0, 0, ~(uint64_t)UINT32_MAX),
+        };
+        rc = cpumR3MsrApplyFudgeTable(pVM, &s_aRdTscPFudgeMsrs[0], RT_ELEMENTS(s_aRdTscPFudgeMsrs));
         AssertLogRelRCReturn(rc, rc);
     }