| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef _ASM_X86_CPUFEATURES_H |
| #define _ASM_X86_CPUFEATURES_H |
| |
| #ifndef _ASM_X86_REQUIRED_FEATURES_H |
| #include <asm/required-features.h> |
| #endif |
| |
| #ifndef _ASM_X86_DISABLED_FEATURES_H |
| #include <asm/disabled-features.h> |
| #endif |
| |
| /* |
| * Defines x86 CPU feature bits |
| */ |
| #define NCAPINTS 21 /* N 32-bit words worth of info */ |
| #define NBUGINTS 2 /* N 32-bit bug flags */ |
| |
| /* |
| * Note: If the comment begins with a quoted string, that string is used |
| * in /proc/cpuinfo instead of the macro name. If the string is "", |
| * this feature bit is not displayed in /proc/cpuinfo at all. |
| * |
| * When adding new features here that depend on other features, |
| * please update the table in kernel/cpu/cpuid-deps.c as well. |
| */ |
| |
| /* Intel-defined CPU features, CPUID level 0x00000001 (EDX), word 0 */ |
| #define X86_FEATURE_FPU ( 0*32+ 0) /* Onboard FPU */ |
| #define X86_FEATURE_VME ( 0*32+ 1) /* Virtual Mode Extensions */ |
| #define X86_FEATURE_DE ( 0*32+ 2) /* Debugging Extensions */ |
| #define X86_FEATURE_PSE ( 0*32+ 3) /* Page Size Extensions */ |
| #define X86_FEATURE_TSC ( 0*32+ 4) /* Time Stamp Counter */ |
| #define X86_FEATURE_MSR ( 0*32+ 5) /* Model-Specific Registers */ |
| #define X86_FEATURE_PAE ( 0*32+ 6) /* Physical Address Extensions */ |
| #define X86_FEATURE_MCE ( 0*32+ 7) /* Machine Check Exception */ |
| #define X86_FEATURE_CX8 ( 0*32+ 8) /* CMPXCHG8 instruction */ |
| #define X86_FEATURE_APIC ( 0*32+ 9) /* Onboard APIC */ |
| #define X86_FEATURE_SEP ( 0*32+11) /* SYSENTER/SYSEXIT */ |
| #define X86_FEATURE_MTRR ( 0*32+12) /* Memory Type Range Registers */ |
| #define X86_FEATURE_PGE ( 0*32+13) /* Page Global Enable */ |
| #define X86_FEATURE_MCA ( 0*32+14) /* Machine Check Architecture */ |
| #define X86_FEATURE_CMOV ( 0*32+15) /* CMOV instructions (plus FCMOVcc, FCOMI with FPU) */ |
| #define X86_FEATURE_PAT ( 0*32+16) /* Page Attribute Table */ |
| #define X86_FEATURE_PSE36 ( 0*32+17) /* 36-bit PSEs */ |
| #define X86_FEATURE_PN ( 0*32+18) /* Processor serial number */ |
| #define X86_FEATURE_CLFLUSH ( 0*32+19) /* CLFLUSH instruction */ |
| #define X86_FEATURE_DS ( 0*32+21) /* "dts" Debug Store */ |
| #define X86_FEATURE_ACPI ( 0*32+22) /* ACPI via MSR */ |
| #define X86_FEATURE_MMX ( 0*32+23) /* Multimedia Extensions */ |
| #define X86_FEATURE_FXSR ( 0*32+24) /* FXSAVE/FXRSTOR, CR4.OSFXSR */ |
| #define X86_FEATURE_XMM ( 0*32+25) /* "sse" */ |
| #define X86_FEATURE_XMM2 ( 0*32+26) /* "sse2" */ |
| #define X86_FEATURE_SELFSNOOP ( 0*32+27) /* "ss" CPU self snoop */ |
| #define X86_FEATURE_HT ( 0*32+28) /* Hyper-Threading */ |
| #define X86_FEATURE_ACC ( 0*32+29) /* "tm" Automatic clock control */ |
| #define X86_FEATURE_IA64 ( 0*32+30) /* IA-64 processor */ |
| #define X86_FEATURE_PBE ( 0*32+31) /* Pending Break Enable */ |
| |
| /* AMD-defined CPU features, CPUID level 0x80000001, word 1 */ |
| /* Don't duplicate feature flags which are redundant with Intel! */ |
| #define X86_FEATURE_SYSCALL ( 1*32+11) /* SYSCALL/SYSRET */ |
| #define X86_FEATURE_MP ( 1*32+19) /* MP Capable */ |
| #define X86_FEATURE_NX ( 1*32+20) /* Execute Disable */ |
| #define X86_FEATURE_MMXEXT ( 1*32+22) /* AMD MMX extensions */ |
| #define X86_FEATURE_FXSR_OPT ( 1*32+25) /* FXSAVE/FXRSTOR optimizations */ |
| #define X86_FEATURE_GBPAGES ( 1*32+26) /* "pdpe1gb" GB pages */ |
| #define X86_FEATURE_RDTSCP ( 1*32+27) /* RDTSCP */ |
| #define X86_FEATURE_LM ( 1*32+29) /* Long Mode (x86-64, 64-bit support) */ |
| #define X86_FEATURE_3DNOWEXT ( 1*32+30) /* AMD 3DNow extensions */ |
| #define X86_FEATURE_3DNOW ( 1*32+31) /* 3DNow */ |
| |
| /* Transmeta-defined CPU features, CPUID level 0x80860001, word 2 */ |
| #define X86_FEATURE_RECOVERY ( 2*32+ 0) /* CPU in recovery mode */ |
| #define X86_FEATURE_LONGRUN ( 2*32+ 1) /* Longrun power control */ |
| #define X86_FEATURE_LRTI ( 2*32+ 3) /* LongRun table interface */ |
| |
| /* Other features, Linux-defined mapping, word 3 */ |
| /* This range is used for feature bits which conflict or are synthesized */ |
| #define X86_FEATURE_CXMMX ( 3*32+ 0) /* Cyrix MMX extensions */ |
| #define X86_FEATURE_K6_MTRR ( 3*32+ 1) /* AMD K6 nonstandard MTRRs */ |
| #define X86_FEATURE_CYRIX_ARR ( 3*32+ 2) /* Cyrix ARRs (= MTRRs) */ |
| #define X86_FEATURE_CENTAUR_MCR ( 3*32+ 3) /* Centaur MCRs (= MTRRs) */ |
| #define X86_FEATURE_K8 ( 3*32+ 4) /* "" Opteron, Athlon64 */ |
| #define X86_FEATURE_ZEN5 ( 3*32+ 5) /* "" CPU based on Zen5 microarchitecture */ |
| #define X86_FEATURE_P3 ( 3*32+ 6) /* "" P3 */ |
| #define X86_FEATURE_P4 ( 3*32+ 7) /* "" P4 */ |
| #define X86_FEATURE_CONSTANT_TSC ( 3*32+ 8) /* TSC ticks at a constant rate */ |
| #define X86_FEATURE_UP ( 3*32+ 9) /* SMP kernel running on UP */ |
| #define X86_FEATURE_ART ( 3*32+10) /* Always running timer (ART) */ |
| #define X86_FEATURE_ARCH_PERFMON ( 3*32+11) /* Intel Architectural PerfMon */ |
| #define X86_FEATURE_PEBS ( 3*32+12) /* Precise-Event Based Sampling */ |
| #define X86_FEATURE_BTS ( 3*32+13) /* Branch Trace Store */ |
| #define X86_FEATURE_SYSCALL32 ( 3*32+14) /* "" syscall in IA32 userspace */ |
| #define X86_FEATURE_SYSENTER32 ( 3*32+15) /* "" sysenter in IA32 userspace */ |
| #define X86_FEATURE_REP_GOOD ( 3*32+16) /* REP microcode works well */ |
| #define X86_FEATURE_AMD_LBR_V2 ( 3*32+17) /* AMD Last Branch Record Extension Version 2 */ |
| #define X86_FEATURE_CLEAR_CPU_BUF ( 3*32+18) /* "" Clear CPU buffers using VERW */ |
| #define X86_FEATURE_ACC_POWER ( 3*32+19) /* AMD Accumulated Power Mechanism */ |
| #define X86_FEATURE_NOPL ( 3*32+20) /* The NOPL (0F 1F) instructions */ |
| #define X86_FEATURE_ALWAYS ( 3*32+21) /* "" Always-present feature */ |
| #define X86_FEATURE_XTOPOLOGY ( 3*32+22) /* CPU topology enum extensions */ |
| #define X86_FEATURE_TSC_RELIABLE ( 3*32+23) /* TSC is known to be reliable */ |
| #define X86_FEATURE_NONSTOP_TSC ( 3*32+24) /* TSC does not stop in C states */ |
| #define X86_FEATURE_CPUID ( 3*32+25) /* CPU has CPUID instruction itself */ |
| #define X86_FEATURE_EXTD_APICID ( 3*32+26) /* Extended APICID (8 bits) */ |
| #define X86_FEATURE_AMD_DCM ( 3*32+27) /* AMD multi-node processor */ |
| #define X86_FEATURE_APERFMPERF ( 3*32+28) /* P-State hardware coordination feedback capability (APERF/MPERF MSRs) */ |
| #define X86_FEATURE_RAPL ( 3*32+29) /* AMD/Hygon RAPL interface */ |
| #define X86_FEATURE_NONSTOP_TSC_S3 ( 3*32+30) /* TSC doesn't stop in S3 state */ |
| #define X86_FEATURE_TSC_KNOWN_FREQ ( 3*32+31) /* TSC has known frequency */ |
| |
| /* Intel-defined CPU features, CPUID level 0x00000001 (ECX), word 4 */ |
| #define X86_FEATURE_XMM3 ( 4*32+ 0) /* "pni" SSE-3 */ |
| #define X86_FEATURE_PCLMULQDQ ( 4*32+ 1) /* PCLMULQDQ instruction */ |
| #define X86_FEATURE_DTES64 ( 4*32+ 2) /* 64-bit Debug Store */ |
| #define X86_FEATURE_MWAIT ( 4*32+ 3) /* "monitor" MONITOR/MWAIT support */ |
| #define X86_FEATURE_DSCPL ( 4*32+ 4) /* "ds_cpl" CPL-qualified (filtered) Debug Store */ |
| #define X86_FEATURE_VMX ( 4*32+ 5) /* Hardware virtualization */ |
| #define X86_FEATURE_SMX ( 4*32+ 6) /* Safer Mode eXtensions */ |
| #define X86_FEATURE_EST ( 4*32+ 7) /* Enhanced SpeedStep */ |
| #define X86_FEATURE_TM2 ( 4*32+ 8) /* Thermal Monitor 2 */ |
| #define X86_FEATURE_SSSE3 ( 4*32+ 9) /* Supplemental SSE-3 */ |
| #define X86_FEATURE_CID ( 4*32+10) /* Context ID */ |
| #define X86_FEATURE_SDBG ( 4*32+11) /* Silicon Debug */ |
| #define X86_FEATURE_FMA ( 4*32+12) /* Fused multiply-add */ |
| #define X86_FEATURE_CX16 ( 4*32+13) /* CMPXCHG16B instruction */ |
| #define X86_FEATURE_XTPR ( 4*32+14) /* Send Task Priority Messages */ |
| #define X86_FEATURE_PDCM ( 4*32+15) /* Perf/Debug Capabilities MSR */ |
| #define X86_FEATURE_PCID ( 4*32+17) /* Process Context Identifiers */ |
| #define X86_FEATURE_DCA ( 4*32+18) /* Direct Cache Access */ |
| #define X86_FEATURE_XMM4_1 ( 4*32+19) /* "sse4_1" SSE-4.1 */ |
| #define X86_FEATURE_XMM4_2 ( 4*32+20) /* "sse4_2" SSE-4.2 */ |
| #define X86_FEATURE_X2APIC ( 4*32+21) /* X2APIC */ |
| #define X86_FEATURE_MOVBE ( 4*32+22) /* MOVBE instruction */ |
| #define X86_FEATURE_POPCNT ( 4*32+23) /* POPCNT instruction */ |
| #define X86_FEATURE_TSC_DEADLINE_TIMER ( 4*32+24) /* TSC deadline timer */ |
| #define X86_FEATURE_AES ( 4*32+25) /* AES instructions */ |
| #define X86_FEATURE_XSAVE ( 4*32+26) /* XSAVE/XRSTOR/XSETBV/XGETBV instructions */ |
| #define X86_FEATURE_OSXSAVE ( 4*32+27) /* "" XSAVE instruction enabled in the OS */ |
| #define X86_FEATURE_AVX ( 4*32+28) /* Advanced Vector Extensions */ |
| #define X86_FEATURE_F16C ( 4*32+29) /* 16-bit FP conversions */ |
| #define X86_FEATURE_RDRAND ( 4*32+30) /* RDRAND instruction */ |
| #define X86_FEATURE_HYPERVISOR ( 4*32+31) /* Running on a hypervisor */ |
| |
| /* VIA/Cyrix/Centaur-defined CPU features, CPUID level 0xC0000001, word 5 */ |
| #define X86_FEATURE_XSTORE ( 5*32+ 2) /* "rng" RNG present (xstore) */ |
| #define X86_FEATURE_XSTORE_EN ( 5*32+ 3) /* "rng_en" RNG enabled */ |
| #define X86_FEATURE_XCRYPT ( 5*32+ 6) /* "ace" on-CPU crypto (xcrypt) */ |
| #define X86_FEATURE_XCRYPT_EN ( 5*32+ 7) /* "ace_en" on-CPU crypto enabled */ |
| #define X86_FEATURE_ACE2 ( 5*32+ 8) /* Advanced Cryptography Engine v2 */ |
| #define X86_FEATURE_ACE2_EN ( 5*32+ 9) /* ACE v2 enabled */ |
| #define X86_FEATURE_PHE ( 5*32+10) /* PadLock Hash Engine */ |
| #define X86_FEATURE_PHE_EN ( 5*32+11) /* PHE enabled */ |
| #define X86_FEATURE_PMM ( 5*32+12) /* PadLock Montgomery Multiplier */ |
| #define X86_FEATURE_PMM_EN ( 5*32+13) /* PMM enabled */ |
| |
| /* More extended AMD flags: CPUID level 0x80000001, ECX, word 6 */ |
| #define X86_FEATURE_LAHF_LM ( 6*32+ 0) /* LAHF/SAHF in long mode */ |
| #define X86_FEATURE_CMP_LEGACY ( 6*32+ 1) /* If yes HyperThreading not valid */ |
| #define X86_FEATURE_SVM ( 6*32+ 2) /* Secure Virtual Machine */ |
| #define X86_FEATURE_EXTAPIC ( 6*32+ 3) /* Extended APIC space */ |
| #define X86_FEATURE_CR8_LEGACY ( 6*32+ 4) /* CR8 in 32-bit mode */ |
| #define X86_FEATURE_ABM ( 6*32+ 5) /* Advanced bit manipulation */ |
| #define X86_FEATURE_SSE4A ( 6*32+ 6) /* SSE-4A */ |
| #define X86_FEATURE_MISALIGNSSE ( 6*32+ 7) /* Misaligned SSE mode */ |
| #define X86_FEATURE_3DNOWPREFETCH ( 6*32+ 8) /* 3DNow prefetch instructions */ |
| #define X86_FEATURE_OSVW ( 6*32+ 9) /* OS Visible Workaround */ |
| #define X86_FEATURE_IBS ( 6*32+10) /* Instruction Based Sampling */ |
| #define X86_FEATURE_XOP ( 6*32+11) /* extended AVX instructions */ |
| #define X86_FEATURE_SKINIT ( 6*32+12) /* SKINIT/STGI instructions */ |
| #define X86_FEATURE_WDT ( 6*32+13) /* Watchdog timer */ |
| #define X86_FEATURE_LWP ( 6*32+15) /* Light Weight Profiling */ |
| #define X86_FEATURE_FMA4 ( 6*32+16) /* 4 operands MAC instructions */ |
| #define X86_FEATURE_TCE ( 6*32+17) /* Translation Cache Extension */ |
| #define X86_FEATURE_NODEID_MSR ( 6*32+19) /* NodeId MSR */ |
| #define X86_FEATURE_TBM ( 6*32+21) /* Trailing Bit Manipulations */ |
| #define X86_FEATURE_TOPOEXT ( 6*32+22) /* Topology extensions CPUID leafs */ |
| #define X86_FEATURE_PERFCTR_CORE ( 6*32+23) /* Core performance counter extensions */ |
| #define X86_FEATURE_PERFCTR_NB ( 6*32+24) /* NB performance counter extensions */ |
| #define X86_FEATURE_BPEXT ( 6*32+26) /* Data breakpoint extension */ |
| #define X86_FEATURE_PTSC ( 6*32+27) /* Performance time-stamp counter */ |
| #define X86_FEATURE_PERFCTR_LLC ( 6*32+28) /* Last Level Cache performance counter extensions */ |
| #define X86_FEATURE_MWAITX ( 6*32+29) /* MWAIT extension (MONITORX/MWAITX instructions) */ |
| |
| /* |
| * Auxiliary flags: Linux defined - For features scattered in various |
| * CPUID levels like 0x6, 0xA etc, word 7. |
| * |
| * Reuse free bits when adding new feature flags! |
| */ |
| #define X86_FEATURE_RING3MWAIT ( 7*32+ 0) /* Ring 3 MONITOR/MWAIT instructions */ |
| #define X86_FEATURE_CPUID_FAULT ( 7*32+ 1) /* Intel CPUID faulting */ |
| #define X86_FEATURE_CPB ( 7*32+ 2) /* AMD Core Performance Boost */ |
| #define X86_FEATURE_EPB ( 7*32+ 3) /* IA32_ENERGY_PERF_BIAS support */ |
| #define X86_FEATURE_CAT_L3 ( 7*32+ 4) /* Cache Allocation Technology L3 */ |
| #define X86_FEATURE_CAT_L2 ( 7*32+ 5) /* Cache Allocation Technology L2 */ |
| #define X86_FEATURE_CDP_L3 ( 7*32+ 6) /* Code and Data Prioritization L3 */ |
| #define X86_FEATURE_TDX_HOST_PLATFORM ( 7*32+ 7) /* Platform supports being a TDX host */ |
| #define X86_FEATURE_HW_PSTATE ( 7*32+ 8) /* AMD HW-PState */ |
| #define X86_FEATURE_PROC_FEEDBACK ( 7*32+ 9) /* AMD ProcFeedbackInterface */ |
| #define X86_FEATURE_XCOMPACTED ( 7*32+10) /* "" Use compacted XSTATE (XSAVES or XSAVEC) */ |
| #define X86_FEATURE_PTI ( 7*32+11) /* Kernel Page Table Isolation enabled */ |
| #define X86_FEATURE_KERNEL_IBRS ( 7*32+12) /* "" Set/clear IBRS on kernel entry/exit */ |
| #define X86_FEATURE_RSB_VMEXIT ( 7*32+13) /* "" Fill RSB on VM-Exit */ |
| #define X86_FEATURE_INTEL_PPIN ( 7*32+14) /* Intel Processor Inventory Number */ |
| #define X86_FEATURE_CDP_L2 ( 7*32+15) /* Code and Data Prioritization L2 */ |
| #define X86_FEATURE_MSR_SPEC_CTRL ( 7*32+16) /* "" MSR SPEC_CTRL is implemented */ |
| #define X86_FEATURE_SSBD ( 7*32+17) /* Speculative Store Bypass Disable */ |
| #define X86_FEATURE_MBA ( 7*32+18) /* Memory Bandwidth Allocation */ |
| #define X86_FEATURE_RSB_CTXSW ( 7*32+19) /* "" Fill RSB on context switches */ |
| #define X86_FEATURE_PERFMON_V2 ( 7*32+20) /* AMD Performance Monitoring Version 2 */ |
| #define X86_FEATURE_USE_IBPB ( 7*32+21) /* "" Indirect Branch Prediction Barrier enabled */ |
| #define X86_FEATURE_USE_IBRS_FW ( 7*32+22) /* "" Use IBRS during runtime firmware calls */ |
| #define X86_FEATURE_SPEC_STORE_BYPASS_DISABLE ( 7*32+23) /* "" Disable Speculative Store Bypass. */ |
| #define X86_FEATURE_LS_CFG_SSBD ( 7*32+24) /* "" AMD SSBD implementation via LS_CFG MSR */ |
| #define X86_FEATURE_IBRS ( 7*32+25) /* Indirect Branch Restricted Speculation */ |
| #define X86_FEATURE_IBPB ( 7*32+26) /* Indirect Branch Prediction Barrier */ |
| #define X86_FEATURE_STIBP ( 7*32+27) /* Single Thread Indirect Branch Predictors */ |
| #define X86_FEATURE_ZEN ( 7*32+28) /* "" Generic flag for all Zen and newer */ |
| #define X86_FEATURE_L1TF_PTEINV ( 7*32+29) /* "" L1TF workaround PTE inversion */ |
| #define X86_FEATURE_IBRS_ENHANCED ( 7*32+30) /* Enhanced IBRS */ |
| #define X86_FEATURE_MSR_IA32_FEAT_CTL ( 7*32+31) /* "" MSR IA32_FEAT_CTL configured */ |
| |
| /* Virtualization flags: Linux defined, word 8 */ |
| #define X86_FEATURE_TPR_SHADOW ( 8*32+ 0) /* Intel TPR Shadow */ |
| #define X86_FEATURE_FLEXPRIORITY ( 8*32+ 1) /* Intel FlexPriority */ |
| #define X86_FEATURE_EPT ( 8*32+ 2) /* Intel Extended Page Table */ |
| #define X86_FEATURE_VPID ( 8*32+ 3) /* Intel Virtual Processor ID */ |
| |
| #define X86_FEATURE_VMMCALL ( 8*32+15) /* Prefer VMMCALL to VMCALL */ |
| #define X86_FEATURE_XENPV ( 8*32+16) /* "" Xen paravirtual guest */ |
| #define X86_FEATURE_EPT_AD ( 8*32+17) /* Intel Extended Page Table access-dirty bit */ |
| #define X86_FEATURE_VMCALL ( 8*32+18) /* "" Hypervisor supports the VMCALL instruction */ |
| #define X86_FEATURE_VMW_VMMCALL ( 8*32+19) /* "" VMware prefers VMMCALL hypercall instruction */ |
| #define X86_FEATURE_PVUNLOCK ( 8*32+20) /* "" PV unlock function */ |
| #define X86_FEATURE_VCPUPREEMPT ( 8*32+21) /* "" PV vcpu_is_preempted function */ |
| #define X86_FEATURE_TDX_GUEST ( 8*32+22) /* Intel Trust Domain Extensions Guest */ |
| |
| /* Intel-defined CPU features, CPUID level 0x00000007:0 (EBX), word 9 */ |
| #define X86_FEATURE_FSGSBASE ( 9*32+ 0) /* RDFSBASE, WRFSBASE, RDGSBASE, WRGSBASE instructions*/ |
| #define X86_FEATURE_TSC_ADJUST ( 9*32+ 1) /* TSC adjustment MSR 0x3B */ |
| #define X86_FEATURE_SGX ( 9*32+ 2) /* Software Guard Extensions */ |
| #define X86_FEATURE_BMI1 ( 9*32+ 3) /* 1st group bit manipulation extensions */ |
| #define X86_FEATURE_HLE ( 9*32+ 4) /* Hardware Lock Elision */ |
| #define X86_FEATURE_AVX2 ( 9*32+ 5) /* AVX2 instructions */ |
| #define X86_FEATURE_FDP_EXCPTN_ONLY ( 9*32+ 6) /* "" FPU data pointer updated only on x87 exceptions */ |
| #define X86_FEATURE_SMEP ( 9*32+ 7) /* Supervisor Mode Execution Protection */ |
| #define X86_FEATURE_BMI2 ( 9*32+ 8) /* 2nd group bit manipulation extensions */ |
| #define X86_FEATURE_ERMS ( 9*32+ 9) /* Enhanced REP MOVSB/STOSB instructions */ |
| #define X86_FEATURE_INVPCID ( 9*32+10) /* Invalidate Processor Context ID */ |
| #define X86_FEATURE_RTM ( 9*32+11) /* Restricted Transactional Memory */ |
| #define X86_FEATURE_CQM ( 9*32+12) /* Cache QoS Monitoring */ |
| #define X86_FEATURE_ZERO_FCS_FDS ( 9*32+13) /* "" Zero out FPU CS and FPU DS */ |
| #define X86_FEATURE_MPX ( 9*32+14) /* Memory Protection Extension */ |
| #define X86_FEATURE_RDT_A ( 9*32+15) /* Resource Director Technology Allocation */ |
| #define X86_FEATURE_AVX512F ( 9*32+16) /* AVX-512 Foundation */ |
| #define X86_FEATURE_AVX512DQ ( 9*32+17) /* AVX-512 DQ (Double/Quad granular) Instructions */ |
| #define X86_FEATURE_RDSEED ( 9*32+18) /* RDSEED instruction */ |
| #define X86_FEATURE_ADX ( 9*32+19) /* ADCX and ADOX instructions */ |
| #define X86_FEATURE_SMAP ( 9*32+20) /* Supervisor Mode Access Prevention */ |
| #define X86_FEATURE_AVX512IFMA ( 9*32+21) /* AVX-512 Integer Fused Multiply-Add instructions */ |
| #define X86_FEATURE_CLFLUSHOPT ( 9*32+23) /* CLFLUSHOPT instruction */ |
| #define X86_FEATURE_CLWB ( 9*32+24) /* CLWB instruction */ |
| #define X86_FEATURE_INTEL_PT ( 9*32+25) /* Intel Processor Trace */ |
| #define X86_FEATURE_AVX512PF ( 9*32+26) /* AVX-512 Prefetch */ |
| #define X86_FEATURE_AVX512ER ( 9*32+27) /* AVX-512 Exponential and Reciprocal */ |
| #define X86_FEATURE_AVX512CD ( 9*32+28) /* AVX-512 Conflict Detection */ |
| #define X86_FEATURE_SHA_NI ( 9*32+29) /* SHA1/SHA256 Instruction Extensions */ |
| #define X86_FEATURE_AVX512BW ( 9*32+30) /* AVX-512 BW (Byte/Word granular) Instructions */ |
| #define X86_FEATURE_AVX512VL ( 9*32+31) /* AVX-512 VL (128/256 Vector Length) Extensions */ |
| |
| /* Extended state features, CPUID level 0x0000000d:1 (EAX), word 10 */ |
| #define X86_FEATURE_XSAVEOPT (10*32+ 0) /* XSAVEOPT instruction */ |
| #define X86_FEATURE_XSAVEC (10*32+ 1) /* XSAVEC instruction */ |
| #define X86_FEATURE_XGETBV1 (10*32+ 2) /* XGETBV with ECX = 1 instruction */ |
| #define X86_FEATURE_XSAVES (10*32+ 3) /* XSAVES/XRSTORS instructions */ |
| #define X86_FEATURE_XFD (10*32+ 4) /* "" eXtended Feature Disabling */ |
| |
| /* |
| * Extended auxiliary flags: Linux defined - for features scattered in various |
| * CPUID levels like 0xf, etc. |
| * |
| * Reuse free bits when adding new feature flags! |
| */ |
| #define X86_FEATURE_CQM_LLC (11*32+ 0) /* LLC QoS if 1 */ |
| #define X86_FEATURE_CQM_OCCUP_LLC (11*32+ 1) /* LLC occupancy monitoring */ |
| #define X86_FEATURE_CQM_MBM_TOTAL (11*32+ 2) /* LLC Total MBM monitoring */ |
| #define X86_FEATURE_CQM_MBM_LOCAL (11*32+ 3) /* LLC Local MBM monitoring */ |
| #define X86_FEATURE_FENCE_SWAPGS_USER (11*32+ 4) /* "" LFENCE in user entry SWAPGS path */ |
| #define X86_FEATURE_FENCE_SWAPGS_KERNEL (11*32+ 5) /* "" LFENCE in kernel entry SWAPGS path */ |
| #define X86_FEATURE_SPLIT_LOCK_DETECT (11*32+ 6) /* #AC for split lock */ |
| #define X86_FEATURE_PER_THREAD_MBA (11*32+ 7) /* "" Per-thread Memory Bandwidth Allocation */ |
| #define X86_FEATURE_SGX1 (11*32+ 8) /* "" Basic SGX */ |
| #define X86_FEATURE_SGX2 (11*32+ 9) /* "" SGX Enclave Dynamic Memory Management (EDMM) */ |
| #define X86_FEATURE_ENTRY_IBPB (11*32+10) /* "" Issue an IBPB on kernel entry */ |
| #define X86_FEATURE_RRSBA_CTRL (11*32+11) /* "" RET prediction control */ |
| #define X86_FEATURE_RETPOLINE (11*32+12) /* "" Generic Retpoline mitigation for Spectre variant 2 */ |
| #define X86_FEATURE_RETPOLINE_LFENCE (11*32+13) /* "" Use LFENCE for Spectre variant 2 */ |
| #define X86_FEATURE_RETHUNK (11*32+14) /* "" Use REturn THUNK */ |
| #define X86_FEATURE_UNRET (11*32+15) /* "" AMD BTB untrain return */ |
| #define X86_FEATURE_USE_IBPB_FW (11*32+16) /* "" Use IBPB during runtime firmware calls */ |
| #define X86_FEATURE_RSB_VMEXIT_LITE (11*32+17) /* "" Fill RSB on VM exit when EIBRS is enabled */ |
| #define X86_FEATURE_SGX_EDECCSSA (11*32+18) /* "" SGX EDECCSSA user leaf function */ |
| #define X86_FEATURE_CALL_DEPTH (11*32+19) /* "" Call depth tracking for RSB stuffing */ |
| #define X86_FEATURE_MSR_TSX_CTRL (11*32+20) /* "" MSR IA32_TSX_CTRL (Intel) implemented */ |
| #define X86_FEATURE_SMBA (11*32+21) /* "" Slow Memory Bandwidth Allocation */ |
| #define X86_FEATURE_BMEC (11*32+22) /* "" Bandwidth Monitoring Event Configuration */ |
| #define X86_FEATURE_USER_SHSTK (11*32+23) /* Shadow stack support for user mode applications */ |
| #define X86_FEATURE_SRSO (11*32+24) /* "" AMD BTB untrain RETs */ |
| #define X86_FEATURE_SRSO_ALIAS (11*32+25) /* "" AMD BTB untrain RETs through aliasing */ |
| #define X86_FEATURE_IBPB_ON_VMEXIT (11*32+26) /* "" Issue an IBPB only on VMEXIT */ |
| #define X86_FEATURE_APIC_MSRS_FENCE (11*32+27) /* "" IA32_TSC_DEADLINE and X2APIC MSRs need fencing */ |
| #define X86_FEATURE_ZEN2 (11*32+28) /* "" CPU based on Zen2 microarchitecture */ |
| #define X86_FEATURE_ZEN3 (11*32+29) /* "" CPU based on Zen3 microarchitecture */ |
| #define X86_FEATURE_ZEN4 (11*32+30) /* "" CPU based on Zen4 microarchitecture */ |
| #define X86_FEATURE_ZEN1 (11*32+31) /* "" CPU based on Zen1 microarchitecture */ |
| |
| /* Intel-defined CPU features, CPUID level 0x00000007:1 (EAX), word 12 */ |
| #define X86_FEATURE_AVX_VNNI (12*32+ 4) /* AVX VNNI instructions */ |
| #define X86_FEATURE_AVX512_BF16 (12*32+ 5) /* AVX512 BFLOAT16 instructions */ |
| #define X86_FEATURE_CMPCCXADD (12*32+ 7) /* "" CMPccXADD instructions */ |
| #define X86_FEATURE_ARCH_PERFMON_EXT (12*32+ 8) /* "" Intel Architectural PerfMon Extension */ |
| #define X86_FEATURE_FZRM (12*32+10) /* "" Fast zero-length REP MOVSB */ |
| #define X86_FEATURE_FSRS (12*32+11) /* "" Fast short REP STOSB */ |
| #define X86_FEATURE_FSRC (12*32+12) /* "" Fast short REP {CMPSB,SCASB} */ |
| #define X86_FEATURE_FRED (12*32+17) /* Flexible Return and Event Delivery */ |
| #define X86_FEATURE_LKGS (12*32+18) /* "" Load "kernel" (userspace) GS */ |
| #define X86_FEATURE_WRMSRNS (12*32+19) /* "" Non-serializing WRMSR */ |
| #define X86_FEATURE_AMX_FP16 (12*32+21) /* "" AMX fp16 Support */ |
| #define X86_FEATURE_AVX_IFMA (12*32+23) /* "" Support for VPMADD52[H,L]UQ */ |
| #define X86_FEATURE_LAM (12*32+26) /* Linear Address Masking */ |
| |
| /* AMD-defined CPU features, CPUID level 0x80000008 (EBX), word 13 */ |
| #define X86_FEATURE_CLZERO (13*32+ 0) /* CLZERO instruction */ |
| #define X86_FEATURE_IRPERF (13*32+ 1) /* Instructions Retired Count */ |
| #define X86_FEATURE_XSAVEERPTR (13*32+ 2) /* Always save/restore FP error pointers */ |
| #define X86_FEATURE_RDPRU (13*32+ 4) /* Read processor register at user level */ |
| #define X86_FEATURE_WBNOINVD (13*32+ 9) /* WBNOINVD instruction */ |
| #define X86_FEATURE_AMD_IBPB (13*32+12) /* "" Indirect Branch Prediction Barrier */ |
| #define X86_FEATURE_AMD_IBRS (13*32+14) /* "" Indirect Branch Restricted Speculation */ |
| #define X86_FEATURE_AMD_STIBP (13*32+15) /* "" Single Thread Indirect Branch Predictors */ |
| #define X86_FEATURE_AMD_STIBP_ALWAYS_ON (13*32+17) /* "" Single Thread Indirect Branch Predictors always-on preferred */ |
| #define X86_FEATURE_AMD_PPIN (13*32+23) /* Protected Processor Inventory Number */ |
| #define X86_FEATURE_AMD_SSBD (13*32+24) /* "" Speculative Store Bypass Disable */ |
| #define X86_FEATURE_VIRT_SSBD (13*32+25) /* Virtualized Speculative Store Bypass Disable */ |
| #define X86_FEATURE_AMD_SSB_NO (13*32+26) /* "" Speculative Store Bypass is fixed in hardware. */ |
| #define X86_FEATURE_CPPC (13*32+27) /* Collaborative Processor Performance Control */ |
| #define X86_FEATURE_AMD_PSFD (13*32+28) /* "" Predictive Store Forwarding Disable */ |
| #define X86_FEATURE_BTC_NO (13*32+29) /* "" Not vulnerable to Branch Type Confusion */ |
| #define X86_FEATURE_BRS (13*32+31) /* Branch Sampling available */ |
| |
| /* Thermal and Power Management Leaf, CPUID level 0x00000006 (EAX), word 14 */ |
| #define X86_FEATURE_DTHERM (14*32+ 0) /* Digital Thermal Sensor */ |
| #define X86_FEATURE_IDA (14*32+ 1) /* Intel Dynamic Acceleration */ |
| #define X86_FEATURE_ARAT (14*32+ 2) /* Always Running APIC Timer */ |
| #define X86_FEATURE_PLN (14*32+ 4) /* Intel Power Limit Notification */ |
| #define X86_FEATURE_PTS (14*32+ 6) /* Intel Package Thermal Status */ |
| #define X86_FEATURE_HWP (14*32+ 7) /* Intel Hardware P-states */ |
| #define X86_FEATURE_HWP_NOTIFY (14*32+ 8) /* HWP Notification */ |
| #define X86_FEATURE_HWP_ACT_WINDOW (14*32+ 9) /* HWP Activity Window */ |
| #define X86_FEATURE_HWP_EPP (14*32+10) /* HWP Energy Perf. Preference */ |
| #define X86_FEATURE_HWP_PKG_REQ (14*32+11) /* HWP Package Level Request */ |
| #define X86_FEATURE_HFI (14*32+19) /* Hardware Feedback Interface */ |
| |
| /* AMD SVM Feature Identification, CPUID level 0x8000000a (EDX), word 15 */ |
| #define X86_FEATURE_NPT (15*32+ 0) /* Nested Page Table support */ |
| #define X86_FEATURE_LBRV (15*32+ 1) /* LBR Virtualization support */ |
| #define X86_FEATURE_SVML (15*32+ 2) /* "svm_lock" SVM locking MSR */ |
| #define X86_FEATURE_NRIPS (15*32+ 3) /* "nrip_save" SVM next_rip save */ |
| #define X86_FEATURE_TSCRATEMSR (15*32+ 4) /* "tsc_scale" TSC scaling support */ |
| #define X86_FEATURE_VMCBCLEAN (15*32+ 5) /* "vmcb_clean" VMCB clean bits support */ |
| #define X86_FEATURE_FLUSHBYASID (15*32+ 6) /* flush-by-ASID support */ |
| #define X86_FEATURE_DECODEASSISTS (15*32+ 7) /* Decode Assists support */ |
| #define X86_FEATURE_PAUSEFILTER (15*32+10) /* filtered pause intercept */ |
| #define X86_FEATURE_PFTHRESHOLD (15*32+12) /* pause filter threshold */ |
| #define X86_FEATURE_AVIC (15*32+13) /* Virtual Interrupt Controller */ |
| #define X86_FEATURE_V_VMSAVE_VMLOAD (15*32+15) /* Virtual VMSAVE VMLOAD */ |
| #define X86_FEATURE_VGIF (15*32+16) /* Virtual GIF */ |
| #define X86_FEATURE_X2AVIC (15*32+18) /* Virtual x2apic */ |
| #define X86_FEATURE_V_SPEC_CTRL (15*32+20) /* Virtual SPEC_CTRL */ |
| #define X86_FEATURE_VNMI (15*32+25) /* Virtual NMI */ |
| #define X86_FEATURE_SVME_ADDR_CHK (15*32+28) /* "" SVME addr check */ |
| |
| /* Intel-defined CPU features, CPUID level 0x00000007:0 (ECX), word 16 */ |
| #define X86_FEATURE_AVX512VBMI (16*32+ 1) /* AVX512 Vector Bit Manipulation instructions*/ |
| #define X86_FEATURE_UMIP (16*32+ 2) /* User Mode Instruction Protection */ |
| #define X86_FEATURE_PKU (16*32+ 3) /* Protection Keys for Userspace */ |
| #define X86_FEATURE_OSPKE (16*32+ 4) /* OS Protection Keys Enable */ |
| #define X86_FEATURE_WAITPKG (16*32+ 5) /* UMONITOR/UMWAIT/TPAUSE Instructions */ |
| #define X86_FEATURE_AVX512_VBMI2 (16*32+ 6) /* Additional AVX512 Vector Bit Manipulation Instructions */ |
| #define X86_FEATURE_SHSTK (16*32+ 7) /* "" Shadow stack */ |
| #define X86_FEATURE_GFNI (16*32+ 8) /* Galois Field New Instructions */ |
| #define X86_FEATURE_VAES (16*32+ 9) /* Vector AES */ |
| #define X86_FEATURE_VPCLMULQDQ (16*32+10) /* Carry-Less Multiplication Double Quadword */ |
| #define X86_FEATURE_AVX512_VNNI (16*32+11) /* Vector Neural Network Instructions */ |
| #define X86_FEATURE_AVX512_BITALG (16*32+12) /* Support for VPOPCNT[B,W] and VPSHUF-BITQMB instructions */ |
| #define X86_FEATURE_TME (16*32+13) /* Intel Total Memory Encryption */ |
| #define X86_FEATURE_AVX512_VPOPCNTDQ (16*32+14) /* POPCNT for vectors of DW/QW */ |
| #define X86_FEATURE_LA57 (16*32+16) /* 5-level page tables */ |
| #define X86_FEATURE_RDPID (16*32+22) /* RDPID instruction */ |
| #define X86_FEATURE_BUS_LOCK_DETECT (16*32+24) /* Bus Lock detect */ |
| #define X86_FEATURE_CLDEMOTE (16*32+25) /* CLDEMOTE instruction */ |
| #define X86_FEATURE_MOVDIRI (16*32+27) /* MOVDIRI instruction */ |
| #define X86_FEATURE_MOVDIR64B (16*32+28) /* MOVDIR64B instruction */ |
| #define X86_FEATURE_ENQCMD (16*32+29) /* ENQCMD and ENQCMDS instructions */ |
| #define X86_FEATURE_SGX_LC (16*32+30) /* Software Guard Extensions Launch Control */ |
| |
| /* AMD-defined CPU features, CPUID level 0x80000007 (EBX), word 17 */ |
| #define X86_FEATURE_OVERFLOW_RECOV (17*32+ 0) /* MCA overflow recovery support */ |
| #define X86_FEATURE_SUCCOR (17*32+ 1) /* Uncorrectable error containment and recovery */ |
| #define X86_FEATURE_SMCA (17*32+ 3) /* Scalable MCA */ |
| |
| /* Intel-defined CPU features, CPUID level 0x00000007:0 (EDX), word 18 */ |
| #define X86_FEATURE_AVX512_4VNNIW (18*32+ 2) /* AVX-512 Neural Network Instructions */ |
| #define X86_FEATURE_AVX512_4FMAPS (18*32+ 3) /* AVX-512 Multiply Accumulation Single precision */ |
| #define X86_FEATURE_FSRM (18*32+ 4) /* Fast Short Rep Mov */ |
| #define X86_FEATURE_AVX512_VP2INTERSECT (18*32+ 8) /* AVX-512 Intersect for D/Q */ |
| #define X86_FEATURE_SRBDS_CTRL (18*32+ 9) /* "" SRBDS mitigation MSR available */ |
| #define X86_FEATURE_MD_CLEAR (18*32+10) /* VERW clears CPU buffers */ |
| #define X86_FEATURE_RTM_ALWAYS_ABORT (18*32+11) /* "" RTM transaction always aborts */ |
| #define X86_FEATURE_TSX_FORCE_ABORT (18*32+13) /* "" TSX_FORCE_ABORT */ |
| #define X86_FEATURE_SERIALIZE (18*32+14) /* SERIALIZE instruction */ |
| #define X86_FEATURE_HYBRID_CPU (18*32+15) /* "" This part has CPUs of more than one type */ |
| #define X86_FEATURE_TSXLDTRK (18*32+16) /* TSX Suspend Load Address Tracking */ |
| #define X86_FEATURE_PCONFIG (18*32+18) /* Intel PCONFIG */ |
| #define X86_FEATURE_ARCH_LBR (18*32+19) /* Intel ARCH LBR */ |
| #define X86_FEATURE_IBT (18*32+20) /* Indirect Branch Tracking */ |
| #define X86_FEATURE_AMX_BF16 (18*32+22) /* AMX bf16 Support */ |
| #define X86_FEATURE_AVX512_FP16 (18*32+23) /* AVX512 FP16 */ |
| #define X86_FEATURE_AMX_TILE (18*32+24) /* AMX tile Support */ |
| #define X86_FEATURE_AMX_INT8 (18*32+25) /* AMX int8 Support */ |
| #define X86_FEATURE_SPEC_CTRL (18*32+26) /* "" Speculation Control (IBRS + IBPB) */ |
| #define X86_FEATURE_INTEL_STIBP (18*32+27) /* "" Single Thread Indirect Branch Predictors */ |
| #define X86_FEATURE_FLUSH_L1D (18*32+28) /* Flush L1D cache */ |
| #define X86_FEATURE_ARCH_CAPABILITIES (18*32+29) /* IA32_ARCH_CAPABILITIES MSR (Intel) */ |
| #define X86_FEATURE_CORE_CAPABILITIES (18*32+30) /* "" IA32_CORE_CAPABILITIES MSR */ |
| #define X86_FEATURE_SPEC_CTRL_SSBD (18*32+31) /* "" Speculative Store Bypass Disable */ |
| |
| /* AMD-defined memory encryption features, CPUID level 0x8000001f (EAX), word 19 */ |
| #define X86_FEATURE_SME (19*32+ 0) /* AMD Secure Memory Encryption */ |
| #define X86_FEATURE_SEV (19*32+ 1) /* AMD Secure Encrypted Virtualization */ |
| #define X86_FEATURE_VM_PAGE_FLUSH (19*32+ 2) /* "" VM Page Flush MSR is supported */ |
| #define X86_FEATURE_SEV_ES (19*32+ 3) /* AMD Secure Encrypted Virtualization - Encrypted State */ |
| #define X86_FEATURE_SEV_SNP (19*32+ 4) /* AMD Secure Encrypted Virtualization - Secure Nested Paging */ |
| #define X86_FEATURE_V_TSC_AUX (19*32+ 9) /* "" Virtual TSC_AUX */ |
| #define X86_FEATURE_SME_COHERENT (19*32+10) /* "" AMD hardware-enforced cache coherency */ |
| #define X86_FEATURE_DEBUG_SWAP (19*32+14) /* AMD SEV-ES full debug state swap support */ |
| |
| /* AMD-defined Extended Feature 2 EAX, CPUID level 0x80000021 (EAX), word 20 */ |
| #define X86_FEATURE_NO_NESTED_DATA_BP (20*32+ 0) /* "" No Nested Data Breakpoints */ |
| #define X86_FEATURE_WRMSR_XX_BASE_NS (20*32+ 1) /* "" WRMSR to {FS,GS,KERNEL_GS}_BASE is non-serializing */ |
| #define X86_FEATURE_LFENCE_RDTSC (20*32+ 2) /* "" LFENCE always serializing / synchronizes RDTSC */ |
| #define X86_FEATURE_NULL_SEL_CLR_BASE (20*32+ 6) /* "" Null Selector Clears Base */ |
| #define X86_FEATURE_AUTOIBRS (20*32+ 8) /* "" Automatic IBRS */ |
| #define X86_FEATURE_NO_SMM_CTL_MSR (20*32+ 9) /* "" SMM_CTL MSR is not present */ |
| |
| #define X86_FEATURE_SBPB (20*32+27) /* "" Selective Branch Prediction Barrier */ |
| #define X86_FEATURE_IBPB_BRTYPE (20*32+28) /* "" MSR_PRED_CMD[IBPB] flushes all branch type predictions */ |
| #define X86_FEATURE_SRSO_NO (20*32+29) /* "" CPU is not affected by SRSO */ |
| |
| /* |
| * BUG word(s) |
| */ |
| #define X86_BUG(x) (NCAPINTS*32 + (x)) |
| |
| #define X86_BUG_F00F X86_BUG(0) /* Intel F00F */ |
| #define X86_BUG_FDIV X86_BUG(1) /* FPU FDIV */ |
| #define X86_BUG_COMA X86_BUG(2) /* Cyrix 6x86 coma */ |
| #define X86_BUG_AMD_TLB_MMATCH X86_BUG(3) /* "tlb_mmatch" AMD Erratum 383 */ |
| #define X86_BUG_AMD_APIC_C1E X86_BUG(4) /* "apic_c1e" AMD Erratum 400 */ |
| #define X86_BUG_11AP X86_BUG(5) /* Bad local APIC aka 11AP */ |
| #define X86_BUG_FXSAVE_LEAK X86_BUG(6) /* FXSAVE leaks FOP/FIP/FOP */ |
| #define X86_BUG_CLFLUSH_MONITOR X86_BUG(7) /* AAI65, CLFLUSH required before MONITOR */ |
| #define X86_BUG_SYSRET_SS_ATTRS X86_BUG(8) /* SYSRET doesn't fix up SS attrs */ |
| #ifdef CONFIG_X86_32 |
| /* |
| * 64-bit kernels don't use X86_BUG_ESPFIX. Make the define conditional |
| * to avoid confusion. |
| */ |
| #define X86_BUG_ESPFIX X86_BUG(9) /* "" IRET to 16-bit SS corrupts ESP/RSP high bits */ |
| #endif |
| #define X86_BUG_NULL_SEG X86_BUG(10) /* Nulling a selector preserves the base */ |
| #define X86_BUG_SWAPGS_FENCE X86_BUG(11) /* SWAPGS without input dep on GS */ |
| #define X86_BUG_MONITOR X86_BUG(12) /* IPI required to wake up remote CPU */ |
| #define X86_BUG_AMD_E400 X86_BUG(13) /* CPU is among the affected by Erratum 400 */ |
| #define X86_BUG_CPU_MELTDOWN X86_BUG(14) /* CPU is affected by meltdown attack and needs kernel page table isolation */ |
| #define X86_BUG_SPECTRE_V1 X86_BUG(15) /* CPU is affected by Spectre variant 1 attack with conditional branches */ |
| #define X86_BUG_SPECTRE_V2 X86_BUG(16) /* CPU is affected by Spectre variant 2 attack with indirect branches */ |
| #define X86_BUG_SPEC_STORE_BYPASS X86_BUG(17) /* CPU is affected by speculative store bypass attack */ |
| #define X86_BUG_L1TF X86_BUG(18) /* CPU is affected by L1 Terminal Fault */ |
| #define X86_BUG_MDS X86_BUG(19) /* CPU is affected by Microarchitectural data sampling */ |
| #define X86_BUG_MSBDS_ONLY X86_BUG(20) /* CPU is only affected by the MSDBS variant of BUG_MDS */ |
| #define X86_BUG_SWAPGS X86_BUG(21) /* CPU is affected by speculation through SWAPGS */ |
| #define X86_BUG_TAA X86_BUG(22) /* CPU is affected by TSX Async Abort(TAA) */ |
| #define X86_BUG_ITLB_MULTIHIT X86_BUG(23) /* CPU may incur MCE during certain page attribute changes */ |
| #define X86_BUG_SRBDS X86_BUG(24) /* CPU may leak RNG bits if not mitigated */ |
| #define X86_BUG_MMIO_STALE_DATA X86_BUG(25) /* CPU is affected by Processor MMIO Stale Data vulnerabilities */ |
| #define X86_BUG_MMIO_UNKNOWN X86_BUG(26) /* CPU is too old and its MMIO Stale Data status is unknown */ |
| #define X86_BUG_RETBLEED X86_BUG(27) /* CPU is affected by RETBleed */ |
| #define X86_BUG_EIBRS_PBRSB X86_BUG(28) /* EIBRS is vulnerable to Post Barrier RSB Predictions */ |
| #define X86_BUG_SMT_RSB X86_BUG(29) /* CPU is vulnerable to Cross-Thread Return Address Predictions */ |
| #define X86_BUG_GDS X86_BUG(30) /* CPU is affected by Gather Data Sampling */ |
| #define X86_BUG_TDX_PW_MCE X86_BUG(31) /* CPU may incur #MC if non-TD software does partial write to TDX private memory */ |
| |
| /* BUG word 2 */ |
| #define X86_BUG_SRSO X86_BUG(1*32 + 0) /* AMD SRSO bug */ |
| #define X86_BUG_DIV0 X86_BUG(1*32 + 1) /* AMD DIV0 speculation bug */ |
| #define X86_BUG_RFDS X86_BUG(1*32 + 2) /* CPU is vulnerable to Register File Data Sampling */ |
| #endif /* _ASM_X86_CPUFEATURES_H */ |
