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-rw-r--r--src/arch/x86/cpuid.cc18
1 files changed, 16 insertions, 2 deletions
diff --git a/src/arch/x86/cpuid.cc b/src/arch/x86/cpuid.cc
index f3f9a82d7..de11195e0 100644
--- a/src/arch/x86/cpuid.cc
+++ b/src/arch/x86/cpuid.cc
@@ -96,8 +96,15 @@ namespace X86ISA {
stringToRegister(vendorString + 8));
break;
case FamilyModelSteppingBrandFeatures:
+ /** Features Enabling
+ * rdx, enabling most of the features except:
+ * FXSR, FFXSR, Page1GB in EDX
+ *
+ * rcx, disabling most of the features except:
+ * SSE4A, XOP, FMA4 in ECX
+ */
result = CpuidResult(0x00020f51, 0x00000405,
- 0xe3d3fbff, 0x00000001);
+ 0xe3d3fbff, 0x00010840);
break;
case NameString1:
case NameString2:
@@ -153,8 +160,15 @@ namespace X86ISA {
stringToRegister(vendorString + 8));
break;
case FamilyModelStepping:
+ /** Features Enabling
+ * rdx, enabling most of the features except:
+ * HTT in EDX
+ *
+ * rcx, disabling most of the features except:
+ * SSE3, SSSE3, FMA, SSE41, XSAVE, AVX in ECX
+ */
result = CpuidResult(0x00020f51, 0x00000805,
- 0xe7dbfbff, 0x00000001);
+ 0xe7dbfbff, 0x14081201);
break;
default:
warn("x86 cpuid: unimplemented function %u", funcNum);