1 #ifndef _ASM_X86_CPUFEATURES_H 2 #define _ASM_X86_CPUFEATURES_H 3 4 #ifndef _ASM_X86_REQUIRED_FEATURES_H 5 #include <asm/required-features.h> 6 #endif 7 8 #ifndef _ASM_X86_DISABLED_FEATURES_H 9 #include <asm/disabled-features.h> 10 #endif 11 12 /* 13 * Defines x86 CPU feature bits 14 */ 15 #define NCAPINTS 19 /* N 32-bit words worth of info */ 16 #define NBUGINTS 1 /* N 32-bit bug flags */ 17 18 /* 19 * Note: If the comment begins with a quoted string, that string is used 20 * in /proc/cpuinfo instead of the macro name. If the string is "", 21 * this feature bit is not displayed in /proc/cpuinfo at all. 22 */ 23 24 /* Intel-defined CPU features, CPUID level 0x00000001 (edx), word 0 */ 25 #define X86_FEATURE_FPU ( 0*32+ 0) /* Onboard FPU */ 26 #define X86_FEATURE_VME ( 0*32+ 1) /* Virtual Mode Extensions */ 27 #define X86_FEATURE_DE ( 0*32+ 2) /* Debugging Extensions */ 28 #define X86_FEATURE_PSE ( 0*32+ 3) /* Page Size Extensions */ 29 #define X86_FEATURE_TSC ( 0*32+ 4) /* Time Stamp Counter */ 30 #define X86_FEATURE_MSR ( 0*32+ 5) /* Model-Specific Registers */ 31 #define X86_FEATURE_PAE ( 0*32+ 6) /* Physical Address Extensions */ 32 #define X86_FEATURE_MCE ( 0*32+ 7) /* Machine Check Exception */ 33 #define X86_FEATURE_CX8 ( 0*32+ 8) /* CMPXCHG8 instruction */ 34 #define X86_FEATURE_APIC ( 0*32+ 9) /* Onboard APIC */ 35 #define X86_FEATURE_SEP ( 0*32+11) /* SYSENTER/SYSEXIT */ 36 #define X86_FEATURE_MTRR ( 0*32+12) /* Memory Type Range Registers */ 37 #define X86_FEATURE_PGE ( 0*32+13) /* Page Global Enable */ 38 #define X86_FEATURE_MCA ( 0*32+14) /* Machine Check Architecture */ 39 #define X86_FEATURE_CMOV ( 0*32+15) /* CMOV instructions */ 40 /* (plus FCMOVcc, FCOMI with FPU) */ 41 #define X86_FEATURE_PAT ( 0*32+16) /* Page Attribute Table */ 42 #define X86_FEATURE_PSE36 ( 0*32+17) /* 36-bit PSEs */ 43 #define X86_FEATURE_PN ( 0*32+18) /* Processor serial number */ 44 #define X86_FEATURE_CLFLUSH ( 0*32+19) /* CLFLUSH instruction */ 45 #define X86_FEATURE_DS ( 0*32+21) /* "dts" Debug Store */ 46 #define X86_FEATURE_ACPI ( 0*32+22) /* ACPI via MSR */ 47 #define X86_FEATURE_MMX ( 0*32+23) /* Multimedia Extensions */ 48 #define X86_FEATURE_FXSR ( 0*32+24) /* FXSAVE/FXRSTOR, CR4.OSFXSR */ 49 #define X86_FEATURE_XMM ( 0*32+25) /* "sse" */ 50 #define X86_FEATURE_XMM2 ( 0*32+26) /* "sse2" */ 51 #define X86_FEATURE_SELFSNOOP ( 0*32+27) /* "ss" CPU self snoop */ 52 #define X86_FEATURE_HT ( 0*32+28) /* Hyper-Threading */ 53 #define X86_FEATURE_ACC ( 0*32+29) /* "tm" Automatic clock control */ 54 #define X86_FEATURE_IA64 ( 0*32+30) /* IA-64 processor */ 55 #define X86_FEATURE_PBE ( 0*32+31) /* Pending Break Enable */ 56 57 /* AMD-defined CPU features, CPUID level 0x80000001, word 1 */ 58 /* Don't duplicate feature flags which are redundant with Intel! */ 59 #define X86_FEATURE_SYSCALL ( 1*32+11) /* SYSCALL/SYSRET */ 60 #define X86_FEATURE_MP ( 1*32+19) /* MP Capable. */ 61 #define X86_FEATURE_NX ( 1*32+20) /* Execute Disable */ 62 #define X86_FEATURE_MMXEXT ( 1*32+22) /* AMD MMX extensions */ 63 #define X86_FEATURE_FXSR_OPT ( 1*32+25) /* FXSAVE/FXRSTOR optimizations */ 64 #define X86_FEATURE_GBPAGES ( 1*32+26) /* "pdpe1gb" GB pages */ 65 #define X86_FEATURE_RDTSCP ( 1*32+27) /* RDTSCP */ 66 #define X86_FEATURE_LM ( 1*32+29) /* Long Mode (x86-64) */ 67 #define X86_FEATURE_3DNOWEXT ( 1*32+30) /* AMD 3DNow! extensions */ 68 #define X86_FEATURE_3DNOW ( 1*32+31) /* 3DNow! */ 69 70 /* Transmeta-defined CPU features, CPUID level 0x80860001, word 2 */ 71 #define X86_FEATURE_RECOVERY ( 2*32+ 0) /* CPU in recovery mode */ 72 #define X86_FEATURE_LONGRUN ( 2*32+ 1) /* Longrun power control */ 73 #define X86_FEATURE_LRTI ( 2*32+ 3) /* LongRun table interface */ 74 75 /* Other features, Linux-defined mapping, word 3 */ 76 /* This range is used for feature bits which conflict or are synthesized */ 77 #define X86_FEATURE_CXMMX ( 3*32+ 0) /* Cyrix MMX extensions */ 78 #define X86_FEATURE_K6_MTRR ( 3*32+ 1) /* AMD K6 nonstandard MTRRs */ 79 #define X86_FEATURE_CYRIX_ARR ( 3*32+ 2) /* Cyrix ARRs (= MTRRs) */ 80 #define X86_FEATURE_CENTAUR_MCR ( 3*32+ 3) /* Centaur MCRs (= MTRRs) */ 81 /* cpu types for specific tunings: */ 82 #define X86_FEATURE_K8 ( 3*32+ 4) /* "" Opteron, Athlon64 */ 83 #define X86_FEATURE_K7 ( 3*32+ 5) /* "" Athlon */ 84 #define X86_FEATURE_P3 ( 3*32+ 6) /* "" P3 */ 85 #define X86_FEATURE_P4 ( 3*32+ 7) /* "" P4 */ 86 #define X86_FEATURE_CONSTANT_TSC ( 3*32+ 8) /* TSC ticks at a constant rate */ 87 #define X86_FEATURE_UP ( 3*32+ 9) /* smp kernel running on up */ 88 /* free, was #define X86_FEATURE_FXSAVE_LEAK ( 3*32+10) * "" FXSAVE leaks FOP/FIP/FOP */ 89 #define X86_FEATURE_ARCH_PERFMON ( 3*32+11) /* Intel Architectural PerfMon */ 90 #define X86_FEATURE_PEBS ( 3*32+12) /* Precise-Event Based Sampling */ 91 #define X86_FEATURE_BTS ( 3*32+13) /* Branch Trace Store */ 92 #define X86_FEATURE_SYSCALL32 ( 3*32+14) /* "" syscall in ia32 userspace */ 93 #define X86_FEATURE_SYSENTER32 ( 3*32+15) /* "" sysenter in ia32 userspace */ 94 #define X86_FEATURE_REP_GOOD ( 3*32+16) /* rep microcode works well */ 95 #define X86_FEATURE_MFENCE_RDTSC ( 3*32+17) /* "" Mfence synchronizes RDTSC */ 96 #define X86_FEATURE_LFENCE_RDTSC ( 3*32+18) /* "" Lfence synchronizes RDTSC */ 97 /* free, was #define X86_FEATURE_11AP ( 3*32+19) * "" Bad local APIC aka 11AP */ 98 #define X86_FEATURE_NOPL ( 3*32+20) /* The NOPL (0F 1F) instructions */ 99 #define X86_FEATURE_ALWAYS ( 3*32+21) /* "" Always-present feature */ 100 #define X86_FEATURE_XTOPOLOGY ( 3*32+22) /* cpu topology enum extensions */ 101 #define X86_FEATURE_TSC_RELIABLE ( 3*32+23) /* TSC is known to be reliable */ 102 #define X86_FEATURE_NONSTOP_TSC ( 3*32+24) /* TSC does not stop in C states */ 103 /* free, was #define X86_FEATURE_CLFLUSH_MONITOR ( 3*32+25) * "" clflush reqd with monitor */ 104 #define X86_FEATURE_EXTD_APICID ( 3*32+26) /* has extended APICID (8 bits) */ 105 #define X86_FEATURE_AMD_DCM ( 3*32+27) /* multi-node processor */ 106 #define X86_FEATURE_APERFMPERF ( 3*32+28) /* APERFMPERF */ 107 #define X86_FEATURE_NONSTOP_TSC_S3 ( 3*32+30) /* TSC doesn't stop in S3 state */ 108 109 /* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */ 110 #define X86_FEATURE_XMM3 ( 4*32+ 0) /* "pni" SSE-3 */ 111 #define X86_FEATURE_PCLMULQDQ ( 4*32+ 1) /* PCLMULQDQ instruction */ 112 #define X86_FEATURE_DTES64 ( 4*32+ 2) /* 64-bit Debug Store */ 113 #define X86_FEATURE_MWAIT ( 4*32+ 3) /* "monitor" Monitor/Mwait support */ 114 #define X86_FEATURE_DSCPL ( 4*32+ 4) /* "ds_cpl" CPL Qual. Debug Store */ 115 #define X86_FEATURE_VMX ( 4*32+ 5) /* Hardware virtualization */ 116 #define X86_FEATURE_SMX ( 4*32+ 6) /* Safer mode */ 117 #define X86_FEATURE_EST ( 4*32+ 7) /* Enhanced SpeedStep */ 118 #define X86_FEATURE_TM2 ( 4*32+ 8) /* Thermal Monitor 2 */ 119 #define X86_FEATURE_SSSE3 ( 4*32+ 9) /* Supplemental SSE-3 */ 120 #define X86_FEATURE_CID ( 4*32+10) /* Context ID */ 121 #define X86_FEATURE_SDBG ( 4*32+11) /* Silicon Debug */ 122 #define X86_FEATURE_FMA ( 4*32+12) /* Fused multiply-add */ 123 #define X86_FEATURE_CX16 ( 4*32+13) /* CMPXCHG16B */ 124 #define X86_FEATURE_XTPR ( 4*32+14) /* Send Task Priority Messages */ 125 #define X86_FEATURE_PDCM ( 4*32+15) /* Performance Capabilities */ 126 #define X86_FEATURE_PCID ( 4*32+17) /* Process Context Identifiers */ 127 #define X86_FEATURE_DCA ( 4*32+18) /* Direct Cache Access */ 128 #define X86_FEATURE_XMM4_1 ( 4*32+19) /* "sse4_1" SSE-4.1 */ 129 #define X86_FEATURE_XMM4_2 ( 4*32+20) /* "sse4_2" SSE-4.2 */ 130 #define X86_FEATURE_X2APIC ( 4*32+21) /* x2APIC */ 131 #define X86_FEATURE_MOVBE ( 4*32+22) /* MOVBE instruction */ 132 #define X86_FEATURE_POPCNT ( 4*32+23) /* POPCNT instruction */ 133 #define X86_FEATURE_TSC_DEADLINE_TIMER ( 4*32+24) /* Tsc deadline timer */ 134 #define X86_FEATURE_AES ( 4*32+25) /* AES instructions */ 135 #define X86_FEATURE_XSAVE ( 4*32+26) /* XSAVE/XRSTOR/XSETBV/XGETBV */ 136 #define X86_FEATURE_OSXSAVE ( 4*32+27) /* "" XSAVE enabled in the OS */ 137 #define X86_FEATURE_AVX ( 4*32+28) /* Advanced Vector Extensions */ 138 #define X86_FEATURE_F16C ( 4*32+29) /* 16-bit fp conversions */ 139 #define X86_FEATURE_RDRAND ( 4*32+30) /* The RDRAND instruction */ 140 #define X86_FEATURE_HYPERVISOR ( 4*32+31) /* Running on a hypervisor */ 141 142 /* VIA/Cyrix/Centaur-defined CPU features, CPUID level 0xC0000001, word 5 */ 143 #define X86_FEATURE_XSTORE ( 5*32+ 2) /* "rng" RNG present (xstore) */ 144 #define X86_FEATURE_XSTORE_EN ( 5*32+ 3) /* "rng_en" RNG enabled */ 145 #define X86_FEATURE_XCRYPT ( 5*32+ 6) /* "ace" on-CPU crypto (xcrypt) */ 146 #define X86_FEATURE_XCRYPT_EN ( 5*32+ 7) /* "ace_en" on-CPU crypto enabled */ 147 #define X86_FEATURE_ACE2 ( 5*32+ 8) /* Advanced Cryptography Engine v2 */ 148 #define X86_FEATURE_ACE2_EN ( 5*32+ 9) /* ACE v2 enabled */ 149 #define X86_FEATURE_PHE ( 5*32+10) /* PadLock Hash Engine */ 150 #define X86_FEATURE_PHE_EN ( 5*32+11) /* PHE enabled */ 151 #define X86_FEATURE_PMM ( 5*32+12) /* PadLock Montgomery Multiplier */ 152 #define X86_FEATURE_PMM_EN ( 5*32+13) /* PMM enabled */ 153 154 /* More extended AMD flags: CPUID level 0x80000001, ecx, word 6 */ 155 #define X86_FEATURE_LAHF_LM ( 6*32+ 0) /* LAHF/SAHF in long mode */ 156 #define X86_FEATURE_CMP_LEGACY ( 6*32+ 1) /* If yes HyperThreading not valid */ 157 #define X86_FEATURE_SVM ( 6*32+ 2) /* Secure virtual machine */ 158 #define X86_FEATURE_EXTAPIC ( 6*32+ 3) /* Extended APIC space */ 159 #define X86_FEATURE_CR8_LEGACY ( 6*32+ 4) /* CR8 in 32-bit mode */ 160 #define X86_FEATURE_ABM ( 6*32+ 5) /* Advanced bit manipulation */ 161 #define X86_FEATURE_SSE4A ( 6*32+ 6) /* SSE-4A */ 162 #define X86_FEATURE_MISALIGNSSE ( 6*32+ 7) /* Misaligned SSE mode */ 163 #define X86_FEATURE_3DNOWPREFETCH ( 6*32+ 8) /* 3DNow prefetch instructions */ 164 #define X86_FEATURE_OSVW ( 6*32+ 9) /* OS Visible Workaround */ 165 #define X86_FEATURE_IBS ( 6*32+10) /* Instruction Based Sampling */ 166 #define X86_FEATURE_XOP ( 6*32+11) /* extended AVX instructions */ 167 #define X86_FEATURE_SKINIT ( 6*32+12) /* SKINIT/STGI instructions */ 168 #define X86_FEATURE_WDT ( 6*32+13) /* Watchdog timer */ 169 #define X86_FEATURE_LWP ( 6*32+15) /* Light Weight Profiling */ 170 #define X86_FEATURE_FMA4 ( 6*32+16) /* 4 operands MAC instructions */ 171 #define X86_FEATURE_TCE ( 6*32+17) /* translation cache extension */ 172 #define X86_FEATURE_NODEID_MSR ( 6*32+19) /* NodeId MSR */ 173 #define X86_FEATURE_TBM ( 6*32+21) /* trailing bit manipulations */ 174 #define X86_FEATURE_TOPOEXT ( 6*32+22) /* topology extensions CPUID leafs */ 175 #define X86_FEATURE_PERFCTR_CORE ( 6*32+23) /* core performance counter extensions */ 176 #define X86_FEATURE_PERFCTR_NB ( 6*32+24) /* NB performance counter extensions */ 177 #define X86_FEATURE_BPEXT (6*32+26) /* data breakpoint extension */ 178 #define X86_FEATURE_PERFCTR_L2 ( 6*32+28) /* L2 performance counter extensions */ 179 #define X86_FEATURE_MWAITX ( 6*32+29) /* MWAIT extension (MONITORX/MWAITX) */ 180 181 /* 182 * Auxiliary flags: Linux defined - For features scattered in various 183 * CPUID levels like 0x6, 0xA etc, word 7. 184 * 185 * Reuse free bits when adding new feature flags! 186 */ 187 188 #define X86_FEATURE_CPB ( 7*32+ 2) /* AMD Core Performance Boost */ 189 #define X86_FEATURE_EPB ( 7*32+ 3) /* IA32_ENERGY_PERF_BIAS support */ 190 #define X86_FEATURE_INVPCID_SINGLE ( 7*32+ 4) /* Effectively INVPCID && CR4.PCIDE=1 */ 191 192 #define X86_FEATURE_HW_PSTATE ( 7*32+ 8) /* AMD HW-PState */ 193 #define X86_FEATURE_PROC_FEEDBACK ( 7*32+ 9) /* AMD ProcFeedbackInterface */ 194 195 #define X86_FEATURE_FENCE_SWAPGS_USER ( 7*32+10) /* "" LFENCE in user entry SWAPGS path */ 196 #define X86_FEATURE_FENCE_SWAPGS_KERNEL ( 7*32+11) /* "" LFENCE in kernel entry SWAPGS path */ 197 198 #define X86_FEATURE_RETPOLINE ( 7*32+12) /* "" Generic Retpoline mitigation for Spectre variant 2 */ 199 #define X86_FEATURE_RETPOLINE_AMD ( 7*32+13) /* "" AMD Retpoline mitigation for Spectre variant 2 */ 200 201 #define X86_FEATURE_INTEL_PT ( 7*32+15) /* Intel Processor Trace */ 202 #define X86_FEATURE_MSR_SPEC_CTRL ( 7*32+16) /* "" MSR SPEC_CTRL is implemented */ 203 #define X86_FEATURE_SSBD ( 7*32+17) /* Speculative Store Bypass Disable */ 204 205 #define X86_FEATURE_RSB_CTXSW ( 7*32+19) /* "" Fill RSB on context switches */ 206 207 #define X86_FEATURE_USE_IBPB ( 7*32+21) /* "" Indirect Branch Prediction Barrier enabled*/ 208 #define X86_FEATURE_USE_IBRS_FW ( 7*32+22) /* "" Use IBRS during runtime firmware calls */ 209 #define X86_FEATURE_SPEC_STORE_BYPASS_DISABLE ( 7*32+23) /* "" Disable Speculative Store Bypass. */ 210 #define X86_FEATURE_LS_CFG_SSBD ( 7*32+24) /* "" AMD SSBD implementation */ 211 212 #define X86_FEATURE_IBRS ( 7*32+25) /* Indirect Branch Restricted Speculation */ 213 #define X86_FEATURE_IBPB ( 7*32+26) /* Indirect Branch Prediction Barrier */ 214 #define X86_FEATURE_STIBP ( 7*32+27) /* Single Thread Indirect Branch Predictors */ 215 #define X86_FEATURE_ZEN ( 7*32+28) /* "" CPU is AMD family 0x17 (Zen) */ 216 #define X86_FEATURE_L1TF_PTEINV ( 7*32+29) /* "" L1TF workaround PTE inversion */ 217 #define X86_FEATURE_IBRS_ENHANCED ( 7*32+30) /* Enhanced IBRS */ 218 #define X86_FEATURE_KAISER ( 7*32+31) /* CONFIG_PAGE_TABLE_ISOLATION w/o nokaiser */ 219 220 /* Virtualization flags: Linux defined, word 8 */ 221 #define X86_FEATURE_TPR_SHADOW ( 8*32+ 0) /* Intel TPR Shadow */ 222 #define X86_FEATURE_VNMI ( 8*32+ 1) /* Intel Virtual NMI */ 223 #define X86_FEATURE_FLEXPRIORITY ( 8*32+ 2) /* Intel FlexPriority */ 224 #define X86_FEATURE_EPT ( 8*32+ 3) /* Intel Extended Page Table */ 225 #define X86_FEATURE_VPID ( 8*32+ 4) /* Intel Virtual Processor ID */ 226 227 #define X86_FEATURE_VMMCALL ( 8*32+15) /* Prefer vmmcall to vmcall */ 228 #define X86_FEATURE_XENPV ( 8*32+16) /* "" Xen paravirtual guest */ 229 230 231 /* Intel-defined CPU features, CPUID level 0x00000007:0 (ebx), word 9 */ 232 #define X86_FEATURE_FSGSBASE ( 9*32+ 0) /* {RD/WR}{FS/GS}BASE instructions*/ 233 #define X86_FEATURE_TSC_ADJUST ( 9*32+ 1) /* TSC adjustment MSR 0x3b */ 234 #define X86_FEATURE_BMI1 ( 9*32+ 3) /* 1st group bit manipulation extensions */ 235 #define X86_FEATURE_HLE ( 9*32+ 4) /* Hardware Lock Elision */ 236 #define X86_FEATURE_AVX2 ( 9*32+ 5) /* AVX2 instructions */ 237 #define X86_FEATURE_SMEP ( 9*32+ 7) /* Supervisor Mode Execution Protection */ 238 #define X86_FEATURE_BMI2 ( 9*32+ 8) /* 2nd group bit manipulation extensions */ 239 #define X86_FEATURE_ERMS ( 9*32+ 9) /* Enhanced REP MOVSB/STOSB */ 240 #define X86_FEATURE_INVPCID ( 9*32+10) /* Invalidate Processor Context ID */ 241 #define X86_FEATURE_RTM ( 9*32+11) /* Restricted Transactional Memory */ 242 #define X86_FEATURE_CQM ( 9*32+12) /* Cache QoS Monitoring */ 243 #define X86_FEATURE_MPX ( 9*32+14) /* Memory Protection Extension */ 244 #define X86_FEATURE_AVX512F ( 9*32+16) /* AVX-512 Foundation */ 245 #define X86_FEATURE_RDSEED ( 9*32+18) /* The RDSEED instruction */ 246 #define X86_FEATURE_ADX ( 9*32+19) /* The ADCX and ADOX instructions */ 247 #define X86_FEATURE_SMAP ( 9*32+20) /* Supervisor Mode Access Prevention */ 248 #define X86_FEATURE_PCOMMIT ( 9*32+22) /* PCOMMIT instruction */ 249 #define X86_FEATURE_CLFLUSHOPT ( 9*32+23) /* CLFLUSHOPT instruction */ 250 #define X86_FEATURE_CLWB ( 9*32+24) /* CLWB instruction */ 251 #define X86_FEATURE_AVX512PF ( 9*32+26) /* AVX-512 Prefetch */ 252 #define X86_FEATURE_AVX512ER ( 9*32+27) /* AVX-512 Exponential and Reciprocal */ 253 #define X86_FEATURE_AVX512CD ( 9*32+28) /* AVX-512 Conflict Detection */ 254 #define X86_FEATURE_SHA_NI ( 9*32+29) /* SHA1/SHA256 Instruction Extensions */ 255 256 /* Extended state features, CPUID level 0x0000000d:1 (eax), word 10 */ 257 #define X86_FEATURE_XSAVEOPT (10*32+ 0) /* XSAVEOPT */ 258 #define X86_FEATURE_XSAVEC (10*32+ 1) /* XSAVEC */ 259 #define X86_FEATURE_XGETBV1 (10*32+ 2) /* XGETBV with ECX = 1 */ 260 #define X86_FEATURE_XSAVES (10*32+ 3) /* XSAVES/XRSTORS */ 261 262 /* Intel-defined CPU QoS Sub-leaf, CPUID level 0x0000000F:0 (edx), word 11 */ 263 #define X86_FEATURE_CQM_LLC (11*32+ 1) /* LLC QoS if 1 */ 264 265 /* Intel-defined CPU QoS Sub-leaf, CPUID level 0x0000000F:1 (edx), word 12 */ 266 #define X86_FEATURE_CQM_OCCUP_LLC (12*32+ 0) /* LLC occupancy monitoring if 1 */ 267 268 /* AMD-defined CPU features, CPUID level 0x80000008 (ebx), word 13 */ 269 #define X86_FEATURE_CLZERO (13*32+0) /* CLZERO instruction */ 270 #define X86_FEATURE_AMD_IBPB (13*32+12) /* "" Indirect Branch Prediction Barrier */ 271 #define X86_FEATURE_AMD_IBRS (13*32+14) /* "" Indirect Branch Restricted Speculation */ 272 #define X86_FEATURE_AMD_STIBP (13*32+15) /* "" Single Thread Indirect Branch Predictors */ 273 #define X86_FEATURE_AMD_STIBP_ALWAYS_ON (13*32+17) /* "" Single Thread Indirect Branch Predictors always-on preferred */ 274 #define X86_FEATURE_AMD_SSBD (13*32+24) /* "" Speculative Store Bypass Disable */ 275 #define X86_FEATURE_VIRT_SSBD (13*32+25) /* Virtualized Speculative Store Bypass Disable */ 276 #define X86_FEATURE_AMD_SSB_NO (13*32+26) /* "" Speculative Store Bypass is fixed in hardware. */ 277 278 /* Thermal and Power Management Leaf, CPUID level 0x00000006 (eax), word 14 */ 279 #define X86_FEATURE_DTHERM (14*32+ 0) /* Digital Thermal Sensor */ 280 #define X86_FEATURE_IDA (14*32+ 1) /* Intel Dynamic Acceleration */ 281 #define X86_FEATURE_ARAT (14*32+ 2) /* Always Running APIC Timer */ 282 #define X86_FEATURE_PLN (14*32+ 4) /* Intel Power Limit Notification */ 283 #define X86_FEATURE_PTS (14*32+ 6) /* Intel Package Thermal Status */ 284 #define X86_FEATURE_HWP (14*32+ 7) /* Intel Hardware P-states */ 285 #define X86_FEATURE_HWP_NOTIFY (14*32+ 8) /* HWP Notification */ 286 #define X86_FEATURE_HWP_ACT_WINDOW (14*32+ 9) /* HWP Activity Window */ 287 #define X86_FEATURE_HWP_EPP (14*32+10) /* HWP Energy Perf. Preference */ 288 #define X86_FEATURE_HWP_PKG_REQ (14*32+11) /* HWP Package Level Request */ 289 290 /* AMD SVM Feature Identification, CPUID level 0x8000000a (edx), word 15 */ 291 #define X86_FEATURE_NPT (15*32+ 0) /* Nested Page Table support */ 292 #define X86_FEATURE_LBRV (15*32+ 1) /* LBR Virtualization support */ 293 #define X86_FEATURE_SVML (15*32+ 2) /* "svm_lock" SVM locking MSR */ 294 #define X86_FEATURE_NRIPS (15*32+ 3) /* "nrip_save" SVM next_rip save */ 295 #define X86_FEATURE_TSCRATEMSR (15*32+ 4) /* "tsc_scale" TSC scaling support */ 296 #define X86_FEATURE_VMCBCLEAN (15*32+ 5) /* "vmcb_clean" VMCB clean bits support */ 297 #define X86_FEATURE_FLUSHBYASID (15*32+ 6) /* flush-by-ASID support */ 298 #define X86_FEATURE_DECODEASSISTS (15*32+ 7) /* Decode Assists support */ 299 #define X86_FEATURE_PAUSEFILTER (15*32+10) /* filtered pause intercept */ 300 #define X86_FEATURE_PFTHRESHOLD (15*32+12) /* pause filter threshold */ 301 302 /* Intel-defined CPU features, CPUID level 0x00000007:0 (ecx), word 16 */ 303 #define X86_FEATURE_PKU (16*32+ 3) /* Protection Keys for Userspace */ 304 #define X86_FEATURE_OSPKE (16*32+ 4) /* OS Protection Keys Enable */ 305 #define X86_FEATURE_RDPID (16*32+ 22) /* RDPID instruction */ 306 307 /* AMD-defined CPU features, CPUID level 0x80000007 (ebx), word 17 */ 308 #define X86_FEATURE_OVERFLOW_RECOV (17*32+0) /* MCA overflow recovery support */ 309 #define X86_FEATURE_SUCCOR (17*32+1) /* Uncorrectable error containment and recovery */ 310 #define X86_FEATURE_SMCA (17*32+3) /* Scalable MCA */ 311 312 /* Intel-defined CPU features, CPUID level 0x00000007:0 (EDX), word 18 */ 313 #define X86_FEATURE_AVX512_4VNNIW (18*32+ 2) /* AVX-512 Neural Network Instructions */ 314 #define X86_FEATURE_AVX512_4FMAPS (18*32+ 3) /* AVX-512 Multiply Accumulation Single precision */ 315 #define X86_FEATURE_SRBDS_CTRL (18*32+ 9) /* "" SRBDS mitigation MSR available */ 316 #define X86_FEATURE_MD_CLEAR (18*32+10) /* VERW clears CPU buffers */ 317 #define X86_FEATURE_SPEC_CTRL (18*32+26) /* "" Speculation Control (IBRS + IBPB) */ 318 #define X86_FEATURE_INTEL_STIBP (18*32+27) /* "" Single Thread Indirect Branch Predictors */ 319 #define X86_FEATURE_FLUSH_L1D (18*32+28) /* Flush L1D cache */ 320 #define X86_FEATURE_ARCH_CAPABILITIES (18*32+29) /* IA32_ARCH_CAPABILITIES MSR (Intel) */ 321 #define X86_FEATURE_SPEC_CTRL_SSBD (18*32+31) /* "" Speculative Store Bypass Disable */ 322 323 /* 324 * BUG word(s) 325 */ 326 #define X86_BUG(x) (NCAPINTS*32 + (x)) 327 328 #define X86_BUG_F00F X86_BUG(0) /* Intel F00F */ 329 #define X86_BUG_FDIV X86_BUG(1) /* FPU FDIV */ 330 #define X86_BUG_COMA X86_BUG(2) /* Cyrix 6x86 coma */ 331 #define X86_BUG_AMD_TLB_MMATCH X86_BUG(3) /* "tlb_mmatch" AMD Erratum 383 */ 332 #define X86_BUG_AMD_APIC_C1E X86_BUG(4) /* "apic_c1e" AMD Erratum 400 */ 333 #define X86_BUG_11AP X86_BUG(5) /* Bad local APIC aka 11AP */ 334 #define X86_BUG_FXSAVE_LEAK X86_BUG(6) /* FXSAVE leaks FOP/FIP/FOP */ 335 #define X86_BUG_CLFLUSH_MONITOR X86_BUG(7) /* AAI65, CLFLUSH required before MONITOR */ 336 #define X86_BUG_SYSRET_SS_ATTRS X86_BUG(8) /* SYSRET doesn't fix up SS attrs */ 337 #define X86_BUG_CPU_MELTDOWN X86_BUG(14) /* CPU is affected by meltdown attack and needs kernel page table isolation */ 338 #define X86_BUG_SPECTRE_V1 X86_BUG(15) /* CPU is affected by Spectre variant 1 attack with conditional branches */ 339 #define X86_BUG_SPECTRE_V2 X86_BUG(16) /* CPU is affected by Spectre variant 2 attack with indirect branches */ 340 #define X86_BUG_SPEC_STORE_BYPASS X86_BUG(17) /* CPU is affected by speculative store bypass attack */ 341 #define X86_BUG_L1TF X86_BUG(18) /* CPU is affected by L1 Terminal Fault */ 342 #define X86_BUG_MDS X86_BUG(19) /* CPU is affected by Microarchitectural data sampling */ 343 #define X86_BUG_MSBDS_ONLY X86_BUG(20) /* CPU is only affected by the MSDBS variant of BUG_MDS */ 344 #define X86_BUG_SWAPGS X86_BUG(21) /* CPU is affected by speculation through SWAPGS */ 345 #define X86_BUG_TAA X86_BUG(22) /* CPU is affected by TSX Async Abort(TAA) */ 346 #define X86_BUG_ITLB_MULTIHIT X86_BUG(23) /* CPU may incur MCE during certain page attribute changes */ 347 #define X86_BUG_SRBDS X86_BUG(24) /* CPU may leak RNG bits if not mitigated */ 348 349 #endif /* _ASM_X86_CPUFEATURES_H */ 350