# Node ID 334a1f4026ca81fb49ba4216007dd49c0a66c482
# Parent  a0cb57e1c072965dcdd51465beff37b264b41424
diff --git a/src/arch/x86/cpuid.cc b/src/arch/x86/cpuid.cc
--- a/src/arch/x86/cpuid.cc
+++ b/src/arch/x86/cpuid.cc
@@ -96,15 +96,8 @@
                         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, 0x00010840);
+                                     0xe3d3fbff, 0x00000001);
                 break;
               case NameString1:
               case NameString2:
@@ -160,15 +153,8 @@
                         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, 0x14081201);
+                                     0xe7dbfbff, 0x00000001);
                 break;
               default:
                 warn("x86 cpuid: unimplemented function %u", funcNum);