--- f893f73397c994d80fae51e7f63a63155402a5e8
+++ 396c693366504a3396206fff42345735c1ef612b
@@ -568,7 +568,7 @@ static void __cpuinit init_amd(struct cp
 #endif
 
 	/* As a rule processors have APIC timer running in deep C states */
-	if (c->x86 >= 0xf && !cpu_has_amd_erratum(amd_erratum_400))
+	if (c->x86 > 0xf && !cpu_has_amd_erratum(amd_erratum_400))
 		set_cpu_cap(c, X86_FEATURE_ARAT);
 
 	/*