@@ -79,6 +79,64 @@ update_usable (struct cpu_features *cpu_features)
CPU_FEATURE_UNSET (cpu_features, INDEX_7_EDX_21);
CPU_FEATURE_UNSET (cpu_features, INDEX_7_EDX_23);
+ /* Before COMMON_CPUID_INDEX_80000001, clear the usable bits which may
+ require consulting processor manual to determine how to use them in
+ user space. */
+ CPU_FEATURE_UNSET (cpu_features, DTES64);
+ CPU_FEATURE_UNSET (cpu_features, DS_CPL);
+ CPU_FEATURE_UNSET (cpu_features, VMX);
+ CPU_FEATURE_UNSET (cpu_features, SMX);
+ CPU_FEATURE_UNSET (cpu_features, EIST);
+ CPU_FEATURE_UNSET (cpu_features, TM2);
+ CPU_FEATURE_UNSET (cpu_features, CNXT_ID);
+ CPU_FEATURE_UNSET (cpu_features, SDBG);
+ CPU_FEATURE_UNSET (cpu_features, XTPRUPDCTRL);
+ CPU_FEATURE_UNSET (cpu_features, PDCM);
+ CPU_FEATURE_UNSET (cpu_features, PCID);
+ CPU_FEATURE_UNSET (cpu_features, DCA);
+ CPU_FEATURE_UNSET (cpu_features, X2APIC);
+ CPU_FEATURE_UNSET (cpu_features, TSC_DEADLINE);
+ CPU_FEATURE_UNSET (cpu_features, VME);
+ CPU_FEATURE_UNSET (cpu_features, DE);
+ CPU_FEATURE_UNSET (cpu_features, PSE);
+ CPU_FEATURE_UNSET (cpu_features, PAE);
+ CPU_FEATURE_UNSET (cpu_features, MCE);
+ CPU_FEATURE_UNSET (cpu_features, APIC);
+ CPU_FEATURE_UNSET (cpu_features, MTRR);
+ CPU_FEATURE_UNSET (cpu_features, PGE);
+ CPU_FEATURE_UNSET (cpu_features, MCA);
+ CPU_FEATURE_UNSET (cpu_features, PAT);
+ CPU_FEATURE_UNSET (cpu_features, PSE_36);
+ CPU_FEATURE_UNSET (cpu_features, DS);
+ CPU_FEATURE_UNSET (cpu_features, ACPI);
+ CPU_FEATURE_UNSET (cpu_features, SS);
+ CPU_FEATURE_UNSET (cpu_features, TM);
+ CPU_FEATURE_UNSET (cpu_features, PBE);
+ CPU_FEATURE_UNSET (cpu_features, TSC_ADJUST);
+ CPU_FEATURE_UNSET (cpu_features, SGX);
+ CPU_FEATURE_UNSET (cpu_features, HLE);
+ CPU_FEATURE_UNSET (cpu_features, SMEP);
+ CPU_FEATURE_UNSET (cpu_features, RTM);
+ CPU_FEATURE_UNSET (cpu_features, RDT_M);
+ CPU_FEATURE_UNSET (cpu_features, DEPR_FPU_CS_DS);
+ CPU_FEATURE_UNSET (cpu_features, RDT_A);
+ CPU_FEATURE_UNSET (cpu_features, SMAP);
+ CPU_FEATURE_UNSET (cpu_features, TRACE);
+ CPU_FEATURE_UNSET (cpu_features, UMIP);
+ CPU_FEATURE_UNSET (cpu_features, SHSTK);
+ CPU_FEATURE_UNSET (cpu_features, SGX_LC);
+ CPU_FEATURE_UNSET (cpu_features, PKS);
+ CPU_FEATURE_UNSET (cpu_features, MD_CLEAR);
+ CPU_FEATURE_UNSET (cpu_features, HYBRID);
+ CPU_FEATURE_UNSET (cpu_features, PCONFIG);
+ CPU_FEATURE_UNSET (cpu_features, IBT);
+ CPU_FEATURE_UNSET (cpu_features, IBRS_IBPB);
+ CPU_FEATURE_UNSET (cpu_features, STIBP);
+ CPU_FEATURE_UNSET (cpu_features, L1D_FLUSH);
+ CPU_FEATURE_UNSET (cpu_features, ARCH_CAPABILITIES);
+ CPU_FEATURE_UNSET (cpu_features, CORE_CAPABILITIES);
+ CPU_FEATURE_UNSET (cpu_features, SSBD);
+
/* EAX/EBX from COMMON_CPUID_INDEX_1 and EAX from COMMON_CPUID_INDEX_7
aren't used for CPU feature detection. */
cpu_features->features[COMMON_CPUID_INDEX_1].usable.eax = 0;
@@ -106,7 +164,6 @@ update_usable (struct cpu_features *cpu_features)
CPU_FEATURE_SET_USABLE (cpu_features, XGETBV_ECX_1);
CPU_FEATURE_SET_USABLE (cpu_features, XSAVES);
CPU_FEATURE_SET_USABLE (cpu_features, XFD);
- CPU_FEATURE_SET_USABLE (cpu_features, INVARIANT_TSC);
CPU_FEATURE_SET_USABLE (cpu_features, WBNOINVD);
CPU_FEATURE_SET_USABLE (cpu_features, AVX512_BF16);